diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index e7f590c6ef8e..fee35c00cc4e 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -32,6 +32,13 @@ Description:
Description of the physical chip / device for device X.
Typically a part number.
+What: /sys/bus/iio/devices/iio:deviceX/timestamp_clock
+KernelVersion: 4.5
+Contact: linux-iio@vger.kernel.org
+Description:
+ String identifying current posix clock used to timestamp
+ buffered samples and events for device X.
+
What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
What: /sys/bus/iio/devices/triggerX/sampling_frequency
diff --git a/Documentation/DocBook/iio.tmpl b/Documentation/DocBook/iio.tmpl
index f525bf56d1dd..e2ab6a1f223e 100644
--- a/Documentation/DocBook/iio.tmpl
+++ b/Documentation/DocBook/iio.tmpl
@@ -594,7 +594,7 @@
irqreturn_t sensor_iio_pollfunc(int irq, void *p)
{
- pf->timestamp = iio_get_time_ns();
+ pf->timestamp = iio_get_time_ns((struct indio_dev *)p);
return IRQ_WAKE_THREAD;
}
diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
index 539874490492..acc5cd64711c 100644
--- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt
+++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
@@ -56,6 +56,70 @@ maxim,ds1050 5 Bit Programmable, Pulse-Width Modulator
maxim,max1237 Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
maxim,max6625 9-Bit/12-Bit Temperature Sensors with I²C-Compatible Serial Interface
mc,rv3029c2 Real Time Clock Module with I2C-Bus
+microchip,mcp4531-502 Microchip 7-bit Single I2C Digital Potentiometer (5k)
+microchip,mcp4531-103 Microchip 7-bit Single I2C Digital Potentiometer (10k)
+microchip,mcp4531-503 Microchip 7-bit Single I2C Digital Potentiometer (50k)
+microchip,mcp4531-104 Microchip 7-bit Single I2C Digital Potentiometer (100k)
+microchip,mcp4532-502 Microchip 7-bit Single I2C Digital Potentiometer (5k)
+microchip,mcp4532-103 Microchip 7-bit Single I2C Digital Potentiometer (10k)
+microchip,mcp4532-503 Microchip 7-bit Single I2C Digital Potentiometer (50k)
+microchip,mcp4532-104 Microchip 7-bit Single I2C Digital Potentiometer (100k)
+microchip,mcp4541-502 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (5k)
+microchip,mcp4541-103 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (10k)
+microchip,mcp4541-503 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (50k)
+microchip,mcp4541-104 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (100k)
+microchip,mcp4542-502 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (5k)
+microchip,mcp4542-103 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (10k)
+microchip,mcp4542-503 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (50k)
+microchip,mcp4542-104 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (100k)
+microchip,mcp4551-502 Microchip 8-bit Single I2C Digital Potentiometer (5k)
+microchip,mcp4551-103 Microchip 8-bit Single I2C Digital Potentiometer (10k)
+microchip,mcp4551-503 Microchip 8-bit Single I2C Digital Potentiometer (50k)
+microchip,mcp4551-104 Microchip 8-bit Single I2C Digital Potentiometer (100k)
+microchip,mcp4552-502 Microchip 8-bit Single I2C Digital Potentiometer (5k)
+microchip,mcp4552-103 Microchip 8-bit Single I2C Digital Potentiometer (10k)
+microchip,mcp4552-503 Microchip 8-bit Single I2C Digital Potentiometer (50k)
+microchip,mcp4552-104 Microchip 8-bit Single I2C Digital Potentiometer (100k)
+microchip,mcp4561-502 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (5k)
+microchip,mcp4561-103 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (10k)
+microchip,mcp4561-503 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (50k)
+microchip,mcp4561-104 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (100k)
+microchip,mcp4562-502 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (5k)
+microchip,mcp4562-103 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (10k)
+microchip,mcp4562-503 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (50k)
+microchip,mcp4562-104 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (100k)
+microchip,mcp4631-502 Microchip 7-bit Dual I2C Digital Potentiometer (5k)
+microchip,mcp4631-103 Microchip 7-bit Dual I2C Digital Potentiometer (10k)
+microchip,mcp4631-503 Microchip 7-bit Dual I2C Digital Potentiometer (50k)
+microchip,mcp4631-104 Microchip 7-bit Dual I2C Digital Potentiometer (100k)
+microchip,mcp4632-502 Microchip 7-bit Dual I2C Digital Potentiometer (5k)
+microchip,mcp4632-103 Microchip 7-bit Dual I2C Digital Potentiometer (10k)
+microchip,mcp4632-503 Microchip 7-bit Dual I2C Digital Potentiometer (50k)
+microchip,mcp4632-104 Microchip 7-bit Dual I2C Digital Potentiometer (100k)
+microchip,mcp4641-502 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (5k)
+microchip,mcp4641-103 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (10k)
+microchip,mcp4641-503 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (50k)
+microchip,mcp4641-104 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (100k)
+microchip,mcp4642-502 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (5k)
+microchip,mcp4642-103 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (10k)
+microchip,mcp4642-503 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (50k)
+microchip,mcp4642-104 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (100k)
+microchip,mcp4651-502 Microchip 8-bit Dual I2C Digital Potentiometer (5k)
+microchip,mcp4651-103 Microchip 8-bit Dual I2C Digital Potentiometer (10k)
+microchip,mcp4651-503 Microchip 8-bit Dual I2C Digital Potentiometer (50k)
+microchip,mcp4651-104 Microchip 8-bit Dual I2C Digital Potentiometer (100k)
+microchip,mcp4652-502 Microchip 8-bit Dual I2C Digital Potentiometer (5k)
+microchip,mcp4652-103 Microchip 8-bit Dual I2C Digital Potentiometer (10k)
+microchip,mcp4652-503 Microchip 8-bit Dual I2C Digital Potentiometer (50k)
+microchip,mcp4652-104 Microchip 8-bit Dual I2C Digital Potentiometer (100k)
+microchip,mcp4661-502 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (5k)
+microchip,mcp4661-103 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (10k)
+microchip,mcp4661-503 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (50k)
+microchip,mcp4661-104 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (100k)
+microchip,mcp4662-502 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (5k)
+microchip,mcp4662-103 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (10k)
+microchip,mcp4662-503 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (50k)
+microchip,mcp4662-104 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (100k)
national,lm63 Temperature sensor with integrated fan control
national,lm75 I2C TEMP SENSOR
national,lm80 Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
diff --git a/Documentation/devicetree/bindings/iio/adc/brcm,iproc-static-adc.txt b/Documentation/devicetree/bindings/iio/adc/brcm,iproc-static-adc.txt
new file mode 100644
index 000000000000..caaaed765ce4
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/brcm,iproc-static-adc.txt
@@ -0,0 +1,41 @@
+* Broadcom's IPROC Static ADC controller
+
+Broadcom iProc ADC controller has 8 channels 10bit ADC.
+Allows user to convert analog input voltage values to digital.
+
+Required properties:
+
+- compatible: Must be "brcm,iproc-static-adc"
+
+- adc-syscon: Handler of syscon node defining physical base address of the
+ controller and length of memory mapped region.
+
+- #io-channel-cells = <1>; As ADC has multiple outputs
+ refer to Documentation/devicetree/bindings/iio/iio-bindings.txt for details.
+
+- io-channel-ranges:
+ refer to Documentation/devicetree/bindings/iio/iio-bindings.txt for details.
+
+- clocks: Clock used for this block.
+
+- clock-names: Clock name should be given as tsc_clk.
+
+- interrupts: interrupt line number.
+
+For example:
+
+ ts_adc_syscon: ts_adc_syscon@180a6000 {
+ compatible = "brcm,iproc-ts-adc-syscon","syscon";
+ reg = <0x180a6000 0xc30>;
+ };
+
+ adc: adc@180a6000 {
+ compatible = "brcm,iproc-static-adc";
+ adc-syscon = <&ts_adc_syscon>;
+ #io-channel-cells = <1>;
+ io-channel-ranges;
+ clocks = <&asiu_clks BCM_CYGNUS_ASIU_ADC_CLK>;
+ clock-names = "tsc_clk";
+ interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
+ status = "disabled";
+ };
diff --git a/Documentation/devicetree/bindings/iio/adc/max1363.txt b/Documentation/devicetree/bindings/iio/adc/max1363.txt
new file mode 100644
index 000000000000..94a9011dd860
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/max1363.txt
@@ -0,0 +1,63 @@
+* Maxim 1x3x/136x/116xx Analog to Digital Converter (ADC)
+
+The node for this driver must be a child node of a I2C controller, hence
+all mandatory properties for your controller must be specified. See directory:
+
+ Documentation/devicetree/bindings/i2c
+
+for more details.
+
+Required properties:
+ - compatible: Should be one of
+ "maxim,max1361"
+ "maxim,max1362"
+ "maxim,max1363"
+ "maxim,max1364"
+ "maxim,max1036"
+ "maxim,max1037"
+ "maxim,max1038"
+ "maxim,max1039"
+ "maxim,max1136"
+ "maxim,max1137"
+ "maxim,max1138"
+ "maxim,max1139"
+ "maxim,max1236"
+ "maxim,max1237"
+ "maxim,max1238"
+ "maxim,max1239"
+ "maxim,max11600"
+ "maxim,max11601"
+ "maxim,max11602"
+ "maxim,max11603"
+ "maxim,max11604"
+ "maxim,max11605"
+ "maxim,max11606"
+ "maxim,max11607"
+ "maxim,max11608"
+ "maxim,max11609"
+ "maxim,max11610"
+ "maxim,max11611"
+ "maxim,max11612"
+ "maxim,max11613"
+ "maxim,max11614"
+ "maxim,max11615"
+ "maxim,max11616"
+ "maxim,max11617"
+ "maxim,max11644"
+ "maxim,max11645"
+ "maxim,max11646"
+ "maxim,max11647"
+ - reg: Should contain the ADC I2C address
+
+Optional properties:
+ - vcc-supply: phandle to the regulator that provides power to the ADC.
+ - vref-supply: phandle to the regulator for ADC reference voltage.
+ - interrupts: IRQ line for the ADC. If not used the driver will use
+ polling.
+
+Example:
+adc: max11644@36 {
+ compatible = "maxim,max11644";
+ reg = <0x36>;
+ vref-supply = <&adc_vref>;
+};
diff --git a/Documentation/devicetree/bindings/iio/pressure/bmp085.txt b/Documentation/devicetree/bindings/iio/pressure/bmp085.txt
index d7a6deb6b21e..c7198a03c906 100644
--- a/Documentation/devicetree/bindings/iio/pressure/bmp085.txt
+++ b/Documentation/devicetree/bindings/iio/pressure/bmp085.txt
@@ -1,7 +1,11 @@
-BMP085/BMP18x digital pressure sensors
+BMP085/BMP18x/BMP28x digital pressure sensors
Required properties:
-- compatible: bosch,bmp085
+- compatible: must be one of:
+ "bosch,bmp085"
+ "bosch,bmp180"
+ "bosch,bmp280"
+ "bosch,bme280"
Optional properties:
- chip-id: configurable chip id for non-default chip revisions
@@ -10,6 +14,10 @@ Optional properties:
value range is 0-3 with rising sensitivity.
- interrupt-parent: should be the phandle for the interrupt controller
- interrupts: interrupt mapping for IRQ
+- reset-gpios: a GPIO line handling reset of the sensor: as the line is
+ active low, it should be marked GPIO_ACTIVE_LOW (see gpio/gpio.txt)
+- vddd-supply: digital voltage regulator (see regulator/regulator.txt)
+- vdda-supply: analog voltage regulator (see regulator/regulator.txt)
Example:
@@ -21,4 +29,7 @@ pressure@77 {
default-oversampling = <2>;
interrupt-parent = <&gpio0>;
interrupts = <25 IRQ_TYPE_EDGE_RISING>;
+ reset-gpios = <&gpio0 26 GPIO_ACTIVE_LOW>;
+ vddd-supply = <&foo>;
+ vdda-supply = <&bar>;
};
diff --git a/MAINTAINERS b/MAINTAINERS
index 95c1b3a40906..613179fc8556 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5789,6 +5789,7 @@ R: Hartmut Knaack <knaack.h@gmx.de>
R: Lars-Peter Clausen <lars@metafoo.de>
R: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
L: linux-iio@vger.kernel.org
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git
S: Maintained
F: Documentation/devicetree/bindings/iio/
F: drivers/iio/
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index f04b88406995..e3f88ba5faf3 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -654,7 +654,7 @@ static irqreturn_t bma180_trigger_handler(int irq, void *p)
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct bma180_data *data = iio_priv(indio_dev);
- int64_t time_ns = iio_get_time_ns();
+ s64 time_ns = iio_get_time_ns(indio_dev);
int bit, ret, i = 0;
mutex_lock(&data->mutex);
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index 197e693e7e7b..bf17aae66145 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -901,7 +901,7 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
*/
if (!irq) {
data->old_timestamp = data->timestamp;
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
}
/*
@@ -1303,7 +1303,7 @@ static irqreturn_t bmc150_accel_irq_handler(int irq, void *private)
int i;
data->old_timestamp = data->timestamp;
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) {
if (data->triggers[i].enabled) {
diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
index bfe219a8bea2..765a72362dc6 100644
--- a/drivers/iio/accel/kxcjk-1013.c
+++ b/drivers/iio/accel/kxcjk-1013.c
@@ -1129,7 +1129,7 @@ static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
struct iio_dev *indio_dev = private;
struct kxcjk1013_data *data = iio_priv(indio_dev);
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
if (data->dready_trigger_on)
iio_trigger_poll(data->dready_trig);
diff --git a/drivers/iio/accel/mma7455_core.c b/drivers/iio/accel/mma7455_core.c
index c902f54c23f5..6551085bedd7 100644
--- a/drivers/iio/accel/mma7455_core.c
+++ b/drivers/iio/accel/mma7455_core.c
@@ -97,7 +97,8 @@ static irqreturn_t mma7455_trigger_handler(int irq, void *p)
if (ret)
goto done;
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index 799fe64fc286..d41e1b588e68 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -634,11 +634,7 @@ static int mma8452_set_freefall_mode(struct mma8452_data *data, bool state)
val |= MMA8452_FF_MT_CFG_OAE;
}
- val = mma8452_change_config(data, chip->ev_cfg, val);
- if (val)
- return val;
-
- return 0;
+ return mma8452_change_config(data, chip->ev_cfg, val);
}
static int mma8452_set_hp_filter_frequency(struct mma8452_data *data,
@@ -917,7 +913,7 @@ static int mma8452_write_event_config(struct iio_dev *indio_dev,
static void mma8452_transient_interrupt(struct iio_dev *indio_dev)
{
struct mma8452_data *data = iio_priv(indio_dev);
- s64 ts = iio_get_time_ns();
+ s64 ts = iio_get_time_ns(indio_dev);
int src;
src = i2c_smbus_read_byte_data(data->client, data->chip_info->ev_src);
@@ -997,7 +993,7 @@ static irqreturn_t mma8452_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
@@ -1579,8 +1575,8 @@ static int mma8452_probe(struct i2c_client *client,
goto buffer_cleanup;
ret = mma8452_set_freefall_mode(data, false);
- if (ret)
- return ret;
+ if (ret < 0)
+ goto buffer_cleanup;
return 0;
diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c
index d899a4d4307f..bf2704435629 100644
--- a/drivers/iio/accel/mma9551.c
+++ b/drivers/iio/accel/mma9551.c
@@ -391,7 +391,7 @@ static irqreturn_t mma9551_event_handler(int irq, void *private)
iio_push_event(indio_dev,
IIO_MOD_EVENT_CODE(IIO_INCLI, 0, (mma_axis + 1),
IIO_EV_TYPE_ROC, IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
out:
mutex_unlock(&data->mutex);
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
index bb05f3efddca..36bf19733be0 100644
--- a/drivers/iio/accel/mma9553.c
+++ b/drivers/iio/accel/mma9553.c
@@ -1001,7 +1001,7 @@ static irqreturn_t mma9553_irq_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
struct mma9553_data *data = iio_priv(indio_dev);
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
/*
* Since we only configure the interrupt pin when an
* event is enabled, we are sure we have at least
diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
index 57f83a67948c..f8dfdb690563 100644
--- a/drivers/iio/accel/st_accel.h
+++ b/drivers/iio/accel/st_accel.h
@@ -29,6 +29,7 @@
#define LSM330_ACCEL_DEV_NAME "lsm330_accel"
#define LSM303AGR_ACCEL_DEV_NAME "lsm303agr_accel"
#define LIS2DH12_ACCEL_DEV_NAME "lis2dh12_accel"
+#define LIS3L02DQ_ACCEL_DEV_NAME "lis3l02dq"
/**
* struct st_sensors_platform_data - default accel platform data
diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index dce289aa40f2..da3fb069ec5c 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -215,6 +215,22 @@
#define ST_ACCEL_6_IHL_IRQ_MASK 0x80
#define ST_ACCEL_6_MULTIREAD_BIT true
+/* CUSTOM VALUES FOR SENSOR 7 */
+#define ST_ACCEL_7_ODR_ADDR 0x20
+#define ST_ACCEL_7_ODR_MASK 0x30
+#define ST_ACCEL_7_ODR_AVL_280HZ_VAL 0x00
+#define ST_ACCEL_7_ODR_AVL_560HZ_VAL 0x01
+#define ST_ACCEL_7_ODR_AVL_1120HZ_VAL 0x02
+#define ST_ACCEL_7_ODR_AVL_4480HZ_VAL 0x03
+#define ST_ACCEL_7_PW_ADDR 0x20
+#define ST_ACCEL_7_PW_MASK 0xc0
+#define ST_ACCEL_7_FS_AVL_2_GAIN IIO_G_TO_M_S_2(488)
+#define ST_ACCEL_7_BDU_ADDR 0x21
+#define ST_ACCEL_7_BDU_MASK 0x40
+#define ST_ACCEL_7_DRDY_IRQ_ADDR 0x21
+#define ST_ACCEL_7_DRDY_IRQ_INT1_MASK 0x04
+#define ST_ACCEL_7_MULTIREAD_BIT false
+
static const struct iio_chan_spec st_accel_8bit_channels[] = {
ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
@@ -662,6 +678,54 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
.multi_read_bit = ST_ACCEL_6_MULTIREAD_BIT,
.bootime = 2,
},
+ {
+ /* No WAI register present */
+ .sensors_supported = {
+ [0] = LIS3L02DQ_ACCEL_DEV_NAME,
+ },
+ .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
+ .odr = {
+ .addr = ST_ACCEL_7_ODR_ADDR,
+ .mask = ST_ACCEL_7_ODR_MASK,
+ .odr_avl = {
+ { 280, ST_ACCEL_7_ODR_AVL_280HZ_VAL, },
+ { 560, ST_ACCEL_7_ODR_AVL_560HZ_VAL, },
+ { 1120, ST_ACCEL_7_ODR_AVL_1120HZ_VAL, },
+ { 4480, ST_ACCEL_7_ODR_AVL_4480HZ_VAL, },
+ },
+ },
+ .pw = {
+ .addr = ST_ACCEL_7_PW_ADDR,
+ .mask = ST_ACCEL_7_PW_MASK,
+ .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
+ .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+ },
+ .enable_axis = {
+ .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
+ .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
+ },
+ .fs = {
+ .fs_avl = {
+ [0] = {
+ .num = ST_ACCEL_FS_AVL_2G,
+ .gain = ST_ACCEL_7_FS_AVL_2_GAIN,
+ },
+ },
+ },
+ /*
+ * The part has a BDU bit but if set the data is never
+ * updated so don't set it.
+ */
+ .bdu = {
+ },
+ .drdy_irq = {
+ .addr = ST_ACCEL_7_DRDY_IRQ_ADDR,
+ .mask_int1 = ST_ACCEL_7_DRDY_IRQ_INT1_MASK,
+ .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
+ },
+ .multi_read_bit = ST_ACCEL_7_MULTIREAD_BIT,
+ .bootime = 2,
+ },
};
static int st_accel_read_raw(struct iio_dev *indio_dev,
diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index 7333ee9fb11b..e9d427a5df7c 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -80,6 +80,10 @@ static const struct of_device_id st_accel_of_match[] = {
.compatible = "st,h3lis331dl-accel",
.data = H3LIS331DL_DRIVER_NAME,
},
+ {
+ .compatible = "st,lis3l02dq",
+ .data = LIS3L02DQ_ACCEL_DEV_NAME,
+ },
{},
};
MODULE_DEVICE_TABLE(of, st_accel_of_match);
@@ -130,6 +134,7 @@ static const struct i2c_device_id st_accel_id_table[] = {
{ LSM330_ACCEL_DEV_NAME },
{ LSM303AGR_ACCEL_DEV_NAME },
{ LIS2DH12_ACCEL_DEV_NAME },
+ { LIS3L02DQ_ACCEL_DEV_NAME },
{},
};
MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c
index fcd5847a3fd3..efd43941d45d 100644
--- a/drivers/iio/accel/st_accel_spi.c
+++ b/drivers/iio/accel/st_accel_spi.c
@@ -59,6 +59,7 @@ static const struct spi_device_id st_accel_id_table[] = {
{ LSM330_ACCEL_DEV_NAME },
{ LSM303AGR_ACCEL_DEV_NAME },
{ LIS2DH12_ACCEL_DEV_NAME },
+ { LIS3L02DQ_ACCEL_DEV_NAME },
{},
};
MODULE_DEVICE_TABLE(spi, st_accel_id_table);
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 25378c5882e2..1de31bdd4ce4 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -153,6 +153,18 @@ config AXP288_ADC
To compile this driver as a module, choose M here: the module will be
called axp288_adc.
+config BCM_IPROC_ADC
+ tristate "Broadcom IPROC ADC driver"
+ depends on ARCH_BCM_IPROC || COMPILE_TEST
+ depends on MFD_SYSCON
+ default ARCH_BCM_CYGNUS
+ help
+ Say Y here if you want to add support for the Broadcom static
+ ADC driver.
+
+ Broadcom iProc ADC driver. Broadcom iProc ADC controller has 8
+ channels. The driver allows the user to read voltage values.
+
config BERLIN2_ADC
tristate "Marvell Berlin2 ADC driver"
depends on ARCH_BERLIN
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index 38638d46f972..0ba0d500eedb 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_AD799X) += ad799x.o
obj-$(CONFIG_AT91_ADC) += at91_adc.o
obj-$(CONFIG_AT91_SAMA5D2_ADC) += at91-sama5d2_adc.o
obj-$(CONFIG_AXP288_ADC) += axp288_adc.o
+obj-$(CONFIG_BCM_IPROC_ADC) += bcm_iproc_adc.o
obj-$(CONFIG_BERLIN2_ADC) += berlin2-adc.o
obj-$(CONFIG_CC10001_ADC) += cc10001_adc.o
obj-$(CONFIG_DA9150_GPADC) += da9150-gpadc.o
diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index 11c65db14747..c0f6a98fd9bd 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -440,6 +440,7 @@ static int ad7266_probe(struct spi_device *spi)
st->spi = spi;
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &ad7266_info;
diff --git a/drivers/iio/adc/ad7291.c b/drivers/iio/adc/ad7291.c
index c0eabf156702..1d90b02732bb 100644
--- a/drivers/iio/adc/ad7291.c
+++ b/drivers/iio/adc/ad7291.c
@@ -115,7 +115,7 @@ static irqreturn_t ad7291_event_handler(int irq, void *private)
u16 t_status, v_status;
u16 command;
int i;
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
if (ad7291_i2c_read(chip, AD7291_T_ALERT_STATUS, &t_status))
return IRQ_HANDLED;
@@ -505,6 +505,7 @@ static int ad7291_probe(struct i2c_client *client,
indio_dev->num_channels = ARRAY_SIZE(ad7291_channels);
indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.of_node = client->dev.of_node;
indio_dev->info = &ad7291_info;
indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
index 62bb8f7ce4a0..10ec8fce395f 100644
--- a/drivers/iio/adc/ad7298.c
+++ b/drivers/iio/adc/ad7298.c
@@ -163,7 +163,7 @@ static irqreturn_t ad7298_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
@@ -315,6 +315,7 @@ static int ad7298_probe(struct spi_device *spi)
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = ad7298_channels;
indio_dev->num_channels = ARRAY_SIZE(ad7298_channels);
diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index 810c9a9fa62f..b7ecf9aab90f 100644
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -70,7 +70,7 @@ static irqreturn_t ad7476_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, st->data,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
@@ -227,6 +227,7 @@ static int ad7476_probe(struct spi_device *spi)
/* Establish that the iio_dev is a child of the spi device */
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = st->chip_info->channel;
diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c
index 1dfe6410c64c..1817ebf5ad84 100644
--- a/drivers/iio/adc/ad7791.c
+++ b/drivers/iio/adc/ad7791.c
@@ -375,6 +375,7 @@ static int ad7791_probe(struct spi_device *spi)
spi_set_drvdata(spi, indio_dev);
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = st->info->channels;
diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index a43722fbf03a..847789bae821 100644
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -784,6 +784,7 @@ static int ad7793_probe(struct spi_device *spi)
spi_set_drvdata(spi, indio_dev);
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = st->chip_info->channels;
diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c
index ee2ccc19fab6..7a483bfbd70c 100644
--- a/drivers/iio/adc/ad7887.c
+++ b/drivers/iio/adc/ad7887.c
@@ -122,7 +122,7 @@ static irqreturn_t ad7887_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, st->data,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
@@ -264,6 +264,7 @@ static int ad7887_probe(struct spi_device *spi)
/* Estabilish that the iio_dev is a child of the spi device */
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->info = &ad7887_info;
indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
index ff444c19d749..77a675e11ebb 100644
--- a/drivers/iio/adc/ad7923.c
+++ b/drivers/iio/adc/ad7923.c
@@ -181,7 +181,7 @@ static irqreturn_t ad7923_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
@@ -288,6 +288,7 @@ static int ad7923_probe(struct spi_device *spi)
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = info->channels;
indio_dev->num_channels = info->num_channels;
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index ec0200dd52cb..b6163764489c 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -212,7 +212,7 @@ static irqreturn_t ad799x_trigger_handler(int irq, void *p)
goto out;
iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
out:
iio_trigger_notify_done(indio_dev->trig);
@@ -502,7 +502,7 @@ static irqreturn_t ad799x_event_handler(int irq, void *private)
(i >> 1),
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
done:
@@ -806,6 +806,7 @@ static int ad799x_probe(struct i2c_client *client,
st->client = client;
indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.of_node = client->dev.of_node;
indio_dev->name = id->name;
indio_dev->info = st->chip_config->info;
diff --git a/drivers/iio/adc/bcm_iproc_adc.c b/drivers/iio/adc/bcm_iproc_adc.c
new file mode 100644
index 000000000000..21d38c8af21e
--- /dev/null
+++ b/drivers/iio/adc/bcm_iproc_adc.c
@@ -0,0 +1,644 @@
+/*
+ * Copyright 2016 Broadcom
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation (the "GPL").
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 (GPLv2) for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 (GPLv2) along with this source code.
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
+#include <linux/iio/iio.h>
+
+/* Below Register's are common to IPROC ADC and Touchscreen IP */
+#define IPROC_REGCTL1 0x00
+#define IPROC_REGCTL2 0x04
+#define IPROC_INTERRUPT_THRES 0x08
+#define IPROC_INTERRUPT_MASK 0x0c
+#define IPROC_INTERRUPT_STATUS 0x10
+#define IPROC_ANALOG_CONTROL 0x1c
+#define IPROC_CONTROLLER_STATUS 0x14
+#define IPROC_AUX_DATA 0x20
+#define IPROC_SOFT_BYPASS_CONTROL 0x38
+#define IPROC_SOFT_BYPASS_DATA 0x3C
+
+/* IPROC ADC Channel register offsets */
+#define IPROC_ADC_CHANNEL_REGCTL1 0x800
+#define IPROC_ADC_CHANNEL_REGCTL2 0x804
+#define IPROC_ADC_CHANNEL_STATUS 0x808
+#define IPROC_ADC_CHANNEL_INTERRUPT_STATUS 0x80c
+#define IPROC_ADC_CHANNEL_INTERRUPT_MASK 0x810
+#define IPROC_ADC_CHANNEL_DATA 0x814
+#define IPROC_ADC_CHANNEL_OFFSET 0x20
+
+/* Bit definitions for IPROC_REGCTL2 */
+#define IPROC_ADC_AUXIN_SCAN_ENA BIT(0)
+#define IPROC_ADC_PWR_LDO BIT(5)
+#define IPROC_ADC_PWR_ADC BIT(4)
+#define IPROC_ADC_PWR_BG BIT(3)
+#define IPROC_ADC_CONTROLLER_EN BIT(17)
+
+/* Bit definitions for IPROC_INTERRUPT_MASK and IPROC_INTERRUPT_STATUS */
+#define IPROC_ADC_AUXDATA_RDY_INTR BIT(3)
+#define IPROC_ADC_INTR 9
+#define IPROC_ADC_INTR_MASK (0xFF << IPROC_ADC_INTR)
+
+/* Bit definitions for IPROC_ANALOG_CONTROL */
+#define IPROC_ADC_CHANNEL_SEL 11
+#define IPROC_ADC_CHANNEL_SEL_MASK (0x7 << IPROC_ADC_CHANNEL_SEL)
+
+/* Bit definitions for IPROC_ADC_CHANNEL_REGCTL1 */
+#define IPROC_ADC_CHANNEL_ROUNDS 0x2
+#define IPROC_ADC_CHANNEL_ROUNDS_MASK (0x3F << IPROC_ADC_CHANNEL_ROUNDS)
+#define IPROC_ADC_CHANNEL_MODE 0x1
+#define IPROC_ADC_CHANNEL_MODE_MASK (0x1 << IPROC_ADC_CHANNEL_MODE)
+#define IPROC_ADC_CHANNEL_MODE_TDM 0x1
+#define IPROC_ADC_CHANNEL_MODE_SNAPSHOT 0x0
+#define IPROC_ADC_CHANNEL_ENABLE 0x0
+#define IPROC_ADC_CHANNEL_ENABLE_MASK 0x1
+
+/* Bit definitions for IPROC_ADC_CHANNEL_REGCTL2 */
+#define IPROC_ADC_CHANNEL_WATERMARK 0x0
+#define IPROC_ADC_CHANNEL_WATERMARK_MASK \
+ (0x3F << IPROC_ADC_CHANNEL_WATERMARK)
+
+#define IPROC_ADC_WATER_MARK_LEVEL 0x1
+
+/* Bit definitions for IPROC_ADC_CHANNEL_STATUS */
+#define IPROC_ADC_CHANNEL_DATA_LOST 0x0
+#define IPROC_ADC_CHANNEL_DATA_LOST_MASK \
+ (0x0 << IPROC_ADC_CHANNEL_DATA_LOST)
+#define IPROC_ADC_CHANNEL_VALID_ENTERIES 0x1
+#define IPROC_ADC_CHANNEL_VALID_ENTERIES_MASK \
+ (0xFF << IPROC_ADC_CHANNEL_VALID_ENTERIES)
+#define IPROC_ADC_CHANNEL_TOTAL_ENTERIES 0x9
+#define IPROC_ADC_CHANNEL_TOTAL_ENTERIES_MASK \
+ (0xFF << IPROC_ADC_CHANNEL_TOTAL_ENTERIES)
+
+/* Bit definitions for IPROC_ADC_CHANNEL_INTERRUPT_MASK */
+#define IPROC_ADC_CHANNEL_WTRMRK_INTR 0x0
+#define IPROC_ADC_CHANNEL_WTRMRK_INTR_MASK \
+ (0x1 << IPROC_ADC_CHANNEL_WTRMRK_INTR)
+#define IPROC_ADC_CHANNEL_FULL_INTR 0x1
+#define IPROC_ADC_CHANNEL_FULL_INTR_MASK \
+ (0x1 << IPROC_ADC_IPROC_ADC_CHANNEL_FULL_INTR)
+#define IPROC_ADC_CHANNEL_EMPTY_INTR 0x2
+#define IPROC_ADC_CHANNEL_EMPTY_INTR_MASK \
+ (0x1 << IPROC_ADC_CHANNEL_EMPTY_INTR)
+
+#define IPROC_ADC_WATER_MARK_INTR_ENABLE 0x1
+
+/* Number of time to retry a set of the interrupt mask reg */
+#define IPROC_ADC_INTMASK_RETRY_ATTEMPTS 10
+
+#define IPROC_ADC_READ_TIMEOUT (HZ*2)
+
+#define iproc_adc_dbg_reg(dev, priv, reg) \
+do { \
+ u32 val; \
+ regmap_read(priv->regmap, reg, &val); \
+ dev_dbg(dev, "%20s= 0x%08x\n", #reg, val); \
+} while (0)
+
+struct iproc_adc_priv {
+ struct regmap *regmap;
+ struct clk *adc_clk;
+ struct mutex mutex;
+ int irqno;
+ int chan_val;
+ int chan_id;
+ struct completion completion;
+};
+
+static void iproc_adc_reg_dump(struct iio_dev *indio_dev)
+{
+ struct device *dev = &indio_dev->dev;
+ struct iproc_adc_priv *adc_priv = iio_priv(indio_dev);
+
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_REGCTL1);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_REGCTL2);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_INTERRUPT_THRES);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_INTERRUPT_MASK);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_INTERRUPT_STATUS);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_CONTROLLER_STATUS);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_ANALOG_CONTROL);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_AUX_DATA);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_SOFT_BYPASS_CONTROL);
+ iproc_adc_dbg_reg(dev, adc_priv, IPROC_SOFT_BYPASS_DATA);
+}
+
+static irqreturn_t iproc_adc_interrupt_handler(int irq, void *data)
+{
+ u32 channel_intr_status;
+ u32 intr_status;
+ u32 intr_mask;
+ struct iio_dev *indio_dev = data;
+ struct iproc_adc_priv *adc_priv = iio_priv(indio_dev);
+
+ /*
+ * This interrupt is shared with the touchscreen driver.
+ * Make sure this interrupt is intended for us.
+ * Handle only ADC channel specific interrupts.
+ */
+ regmap_read(adc_priv->regmap, IPROC_INTERRUPT_STATUS, &intr_status);
+ regmap_read(adc_priv->regmap, IPROC_INTERRUPT_MASK, &intr_mask);
+ intr_status = intr_status & intr_mask;
+ channel_intr_status = (intr_status & IPROC_ADC_INTR_MASK) >>
+ IPROC_ADC_INTR;
+ if (channel_intr_status)
+ return IRQ_WAKE_THREAD;
+
+ return IRQ_NONE;
+}
+
+static irqreturn_t iproc_adc_interrupt_thread(int irq, void *data)
+{
+ irqreturn_t retval = IRQ_NONE;
+ struct iproc_adc_priv *adc_priv;
+ struct iio_dev *indio_dev = data;
+ unsigned int valid_entries;
+ u32 intr_status;
+ u32 intr_channels;
+ u32 channel_status;
+ u32 ch_intr_status;
+
+ adc_priv = iio_priv(indio_dev);
+
+ regmap_read(adc_priv->regmap, IPROC_INTERRUPT_STATUS, &intr_status);
+ dev_dbg(&indio_dev->dev, "iproc_adc_interrupt_thread(),INTRPT_STS:%x\n",
+ intr_status);
+
+ intr_channels = (intr_status & IPROC_ADC_INTR_MASK) >> IPROC_ADC_INTR;
+ if (intr_channels) {
+ regmap_read(adc_priv->regmap,
+ IPROC_ADC_CHANNEL_INTERRUPT_STATUS +
+ IPROC_ADC_CHANNEL_OFFSET * adc_priv->chan_id,
+ &ch_intr_status);
+
+ if (ch_intr_status & IPROC_ADC_CHANNEL_WTRMRK_INTR_MASK) {
+ regmap_read(adc_priv->regmap,
+ IPROC_ADC_CHANNEL_STATUS +
+ IPROC_ADC_CHANNEL_OFFSET *
+ adc_priv->chan_id,
+ &channel_status);
+
+ valid_entries = ((channel_status &
+ IPROC_ADC_CHANNEL_VALID_ENTERIES_MASK) >>
+ IPROC_ADC_CHANNEL_VALID_ENTERIES);
+ if (valid_entries >= 1) {
+ regmap_read(adc_priv->regmap,
+ IPROC_ADC_CHANNEL_DATA +
+ IPROC_ADC_CHANNEL_OFFSET *
+ adc_priv->chan_id,
+ &adc_priv->chan_val);
+ complete(&adc_priv->completion);
+ } else {
+ dev_err(&indio_dev->dev,
+ "No data rcvd on channel %d\n",
+ adc_priv->chan_id);
+ }
+ regmap_write(adc_priv->regmap,
+ IPROC_ADC_CHANNEL_INTERRUPT_MASK +
+ IPROC_ADC_CHANNEL_OFFSET *
+ adc_priv->chan_id,
+ (ch_intr_status &
+ ~(IPROC_ADC_CHANNEL_WTRMRK_INTR_MASK)));
+ }
+ regmap_write(adc_priv->regmap,
+ IPROC_ADC_CHANNEL_INTERRUPT_STATUS +
+ IPROC_ADC_CHANNEL_OFFSET * adc_priv->chan_id,
+ ch_intr_status);
+ regmap_write(adc_priv->regmap, IPROC_INTERRUPT_STATUS,
+ intr_channels);
+ retval = IRQ_HANDLED;
+ }
+
+ return retval;
+}
+
+static int iproc_adc_do_read(struct iio_dev *indio_dev,
+ int channel,
+ u16 *p_adc_data)
+{
+ int read_len = 0;
+ u32 val;
+ u32 mask;
+ u32 val_check;
+ int failed_cnt = 0;
+ struct iproc_adc_priv *adc_priv = iio_priv(indio_dev);
+
+ mutex_lock(&adc_priv->mutex);
+
+ /*
+ * After a read is complete the ADC interrupts will be disabled so
+ * we can assume this section of code is safe from interrupts.
+ */
+ adc_priv->chan_val = -1;
+ adc_priv->chan_id = channel;
+
+ reinit_completion(&adc_priv->completion);
+ /* Clear any pending interrupt */
+ regmap_update_bits(adc_priv->regmap, IPROC_INTERRUPT_STATUS,
+ IPROC_ADC_INTR_MASK | IPROC_ADC_AUXDATA_RDY_INTR,
+ ((0x0 << channel) << IPROC_ADC_INTR) |
+ IPROC_ADC_AUXDATA_RDY_INTR);
+
+ /* Configure channel for snapshot mode and enable */
+ val = (BIT(IPROC_ADC_CHANNEL_ROUNDS) |
+ (IPROC_ADC_CHANNEL_MODE_SNAPSHOT << IPROC_ADC_CHANNEL_MODE) |
+ (0x1 << IPROC_ADC_CHANNEL_ENABLE));
+
+ mask = IPROC_ADC_CHANNEL_ROUNDS_MASK | IPROC_ADC_CHANNEL_MODE_MASK |
+ IPROC_ADC_CHANNEL_ENABLE_MASK;
+ regmap_update_bits(adc_priv->regmap, (IPROC_ADC_CHANNEL_REGCTL1 +
+ IPROC_ADC_CHANNEL_OFFSET * channel),
+ mask, val);
+
+ /* Set the Watermark for a channel */
+ regmap_update_bits(adc_priv->regmap, (IPROC_ADC_CHANNEL_REGCTL2 +
+ IPROC_ADC_CHANNEL_OFFSET * channel),
+ IPROC_ADC_CHANNEL_WATERMARK_MASK,
+ 0x1);
+
+ /* Enable water mark interrupt */
+ regmap_update_bits(adc_priv->regmap, (IPROC_ADC_CHANNEL_INTERRUPT_MASK +
+ IPROC_ADC_CHANNEL_OFFSET *
+ channel),
+ IPROC_ADC_CHANNEL_WTRMRK_INTR_MASK,
+ IPROC_ADC_WATER_MARK_INTR_ENABLE);
+ regmap_read(adc_priv->regmap, IPROC_INTERRUPT_MASK, &val);
+
+ /* Enable ADC interrupt for a channel */
+ val |= (BIT(channel) << IPROC_ADC_INTR);
+ regmap_write(adc_priv->regmap, IPROC_INTERRUPT_MASK, val);
+
+ /*
+ * There seems to be a very rare issue where writing to this register
+ * does not take effect. To work around the issue we will try multiple
+ * writes. In total we will spend about 10*10 = 100 us attempting this.
+ * Testing has shown that this may loop a few time, but we have never
+ * hit the full count.
+ */
+ regmap_read(adc_priv->regmap, IPROC_INTERRUPT_MASK, &val_check);
+ while (val_check != val) {
+ failed_cnt++;
+
+ if (failed_cnt > IPROC_ADC_INTMASK_RETRY_ATTEMPTS)
+ break;
+
+ udelay(10);
+ regmap_update_bits(adc_priv->regmap, IPROC_INTERRUPT_MASK,
+ IPROC_ADC_INTR_MASK,
+ ((0x1 << channel) <<
+ IPROC_ADC_INTR));
+
+ regmap_read(adc_priv->regmap, IPROC_INTERRUPT_MASK, &val_check);
+ }
+
+ if (failed_cnt) {
+ dev_dbg(&indio_dev->dev,
+ "IntMask failed (%d times)", failed_cnt);
+ if (failed_cnt > IPROC_ADC_INTMASK_RETRY_ATTEMPTS) {
+ dev_err(&indio_dev->dev,
+ "IntMask set failed. Read will likely fail.");
+ read_len = -EIO;
+ goto adc_err;
+ };
+ }
+ regmap_read(adc_priv->regmap, IPROC_INTERRUPT_MASK, &val_check);
+
+ if (wait_for_completion_timeout(&adc_priv->completion,
+ IPROC_ADC_READ_TIMEOUT) > 0) {
+
+ /* Only the lower 16 bits are relevant */
+ *p_adc_data = adc_priv->chan_val & 0xFFFF;
+ read_len = sizeof(*p_adc_data);
+
+ } else {
+ /*
+ * We never got the interrupt, something went wrong.
+ * Perhaps the interrupt may still be coming, we do not want
+ * that now. Lets disable the ADC interrupt, and clear the
+ * status to put it back in to normal state.
+ */
+ read_len = -ETIMEDOUT;
+ goto adc_err;
+ }
+ mutex_unlock(&adc_priv->mutex);
+
+ return read_len;
+
+adc_err:
+ regmap_update_bits(adc_priv->regmap, IPROC_INTERRUPT_MASK,
+ IPROC_ADC_INTR_MASK,
+ ((0x0 << channel) << IPROC_ADC_INTR));
+
+ regmap_update_bits(adc_priv->regmap, IPROC_INTERRUPT_STATUS,
+ IPROC_ADC_INTR_MASK,
+ ((0x0 << channel) << IPROC_ADC_INTR));
+
+ dev_err(&indio_dev->dev, "Timed out waiting for ADC data!\n");
+ iproc_adc_reg_dump(indio_dev);
+ mutex_unlock(&adc_priv->mutex);
+
+ return read_len;
+}
+
+static int iproc_adc_enable(struct iio_dev *indio_dev)
+{
+ u32 val;
+ u32 channel_id;
+ struct iproc_adc_priv *adc_priv = iio_priv(indio_dev);
+ int ret;
+
+ /* Set i_amux = 3b'000, select channel 0 */
+ ret = regmap_update_bits(adc_priv->regmap, IPROC_ANALOG_CONTROL,
+ IPROC_ADC_CHANNEL_SEL_MASK, 0);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to write IPROC_ANALOG_CONTROL %d\n", ret);
+ return ret;
+ }
+ adc_priv->chan_val = -1;
+
+ /*
+ * PWR up LDO, ADC, and Band Gap (0 to enable)
+ * Also enable ADC controller (set high)
+ */
+ ret = regmap_read(adc_priv->regmap, IPROC_REGCTL2, &val);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to read IPROC_REGCTL2 %d\n", ret);
+ return ret;
+ }
+
+ val &= ~(IPROC_ADC_PWR_LDO | IPROC_ADC_PWR_ADC | IPROC_ADC_PWR_BG);
+
+ ret = regmap_write(adc_priv->regmap, IPROC_REGCTL2, val);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to write IPROC_REGCTL2 %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_read(adc_priv->regmap, IPROC_REGCTL2, &val);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to read IPROC_REGCTL2 %d\n", ret);
+ return ret;
+ }
+
+ val |= IPROC_ADC_CONTROLLER_EN;
+ ret = regmap_write(adc_priv->regmap, IPROC_REGCTL2, val);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to write IPROC_REGCTL2 %d\n", ret);
+ return ret;
+ }
+
+ for (channel_id = 0; channel_id < indio_dev->num_channels;
+ channel_id++) {
+ ret = regmap_write(adc_priv->regmap,
+ IPROC_ADC_CHANNEL_INTERRUPT_MASK +
+ IPROC_ADC_CHANNEL_OFFSET * channel_id, 0);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to write ADC_CHANNEL_INTERRUPT_MASK %d\n",
+ ret);
+ return ret;
+ }
+
+ ret = regmap_write(adc_priv->regmap,
+ IPROC_ADC_CHANNEL_INTERRUPT_STATUS +
+ IPROC_ADC_CHANNEL_OFFSET * channel_id, 0);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to write ADC_CHANNEL_INTERRUPT_STATUS %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void iproc_adc_disable(struct iio_dev *indio_dev)
+{
+ u32 val;
+ int ret;
+ struct iproc_adc_priv *adc_priv = iio_priv(indio_dev);
+
+ ret = regmap_read(adc_priv->regmap, IPROC_REGCTL2, &val);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to read IPROC_REGCTL2 %d\n", ret);
+ return;
+ }
+
+ val &= ~IPROC_ADC_CONTROLLER_EN;
+ ret = regmap_write(adc_priv->regmap, IPROC_REGCTL2, val);
+ if (ret) {
+ dev_err(&indio_dev->dev,
+ "failed to write IPROC_REGCTL2 %d\n", ret);
+ return;
+ }
+}
+
+static int iproc_adc_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val,
+ int *val2,
+ long mask)
+{
+ u16 adc_data;
+ int err;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ err = iproc_adc_do_read(indio_dev, chan->channel, &adc_data);
+ if (err < 0)
+ return err;
+ *val = adc_data;
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_VOLTAGE:
+ *val = 1800;
+ *val2 = 10;
+ return IIO_VAL_FRACTIONAL_LOG2;
+ default:
+ return -EINVAL;
+ }
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct iio_info iproc_adc_iio_info = {
+ .read_raw = &iproc_adc_read_raw,
+ .driver_module = THIS_MODULE,
+};
+
+#define IPROC_ADC_CHANNEL(_index, _id) { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .channel = _index, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .datasheet_name = _id, \
+}
+
+static const struct iio_chan_spec iproc_adc_iio_channels[] = {
+ IPROC_ADC_CHANNEL(0, "adc0"),
+ IPROC_ADC_CHANNEL(1, "adc1"),
+ IPROC_ADC_CHANNEL(2, "adc2"),
+ IPROC_ADC_CHANNEL(3, "adc3"),
+ IPROC_ADC_CHANNEL(4, "adc4"),
+ IPROC_ADC_CHANNEL(5, "adc5"),
+ IPROC_ADC_CHANNEL(6, "adc6"),
+ IPROC_ADC_CHANNEL(7, "adc7"),
+};
+
+static int iproc_adc_probe(struct platform_device *pdev)
+{
+ struct iproc_adc_priv *adc_priv;
+ struct iio_dev *indio_dev = NULL;
+ int ret;
+
+ indio_dev = devm_iio_device_alloc(&pdev->dev,
+ sizeof(*adc_priv));
+ if (!indio_dev) {
+ dev_err(&pdev->dev, "failed to allocate iio device\n");
+ return -ENOMEM;
+ }
+
+ adc_priv = iio_priv(indio_dev);
+ platform_set_drvdata(pdev, indio_dev);
+
+ mutex_init(&adc_priv->mutex);
+
+ init_completion(&adc_priv->completion);
+
+ adc_priv->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
+ "adc-syscon");
+ if (IS_ERR(adc_priv->regmap)) {
+ dev_err(&pdev->dev, "failed to get handle for tsc syscon\n");
+ ret = PTR_ERR(adc_priv->regmap);
+ return ret;
+ }
+
+ adc_priv->adc_clk = devm_clk_get(&pdev->dev, "tsc_clk");
+ if (IS_ERR(adc_priv->adc_clk)) {
+ dev_err(&pdev->dev,
+ "failed getting clock tsc_clk\n");
+ ret = PTR_ERR(adc_priv->adc_clk);
+ return ret;
+ }
+
+ adc_priv->irqno = platform_get_irq(pdev, 0);
+ if (adc_priv->irqno <= 0) {
+ dev_err(&pdev->dev, "platform_get_irq failed\n");
+ ret = -ENODEV;
+ return ret;
+ }
+
+ ret = regmap_update_bits(adc_priv->regmap, IPROC_REGCTL2,
+ IPROC_ADC_AUXIN_SCAN_ENA, 0);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to write IPROC_REGCTL2 %d\n", ret);
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(&pdev->dev, adc_priv->irqno,
+ iproc_adc_interrupt_thread,
+ iproc_adc_interrupt_handler,
+ IRQF_SHARED, "iproc-adc", indio_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "request_irq error %d\n", ret);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(adc_priv->adc_clk);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "clk_prepare_enable failed %d\n", ret);
+ return ret;
+ }
+
+ ret = iproc_adc_enable(indio_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to enable adc %d\n", ret);
+ goto err_adc_enable;
+ }
+
+ indio_dev->name = "iproc-static-adc";
+ indio_dev->dev.parent = &pdev->dev;
+ indio_dev->dev.of_node = pdev->dev.of_node;
+ indio_dev->info = &iproc_adc_iio_info;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = iproc_adc_iio_channels;
+ indio_dev->num_channels = ARRAY_SIZE(iproc_adc_iio_channels);
+
+ ret = iio_device_register(indio_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "iio_device_register failed:err %d\n", ret);
+ goto err_clk;
+ }
+
+ return 0;
+
+err_clk:
+ iproc_adc_disable(indio_dev);
+err_adc_enable:
+ clk_disable_unprepare(adc_priv->adc_clk);
+
+ return ret;
+}
+
+static int iproc_adc_remove(struct platform_device *pdev)
+{
+ struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+ struct iproc_adc_priv *adc_priv = iio_priv(indio_dev);
+
+ iio_device_unregister(indio_dev);
+ iproc_adc_disable(indio_dev);
+ clk_disable_unprepare(adc_priv->adc_clk);
+
+ return 0;
+}
+
+static const struct of_device_id iproc_adc_of_match[] = {
+ {.compatible = "brcm,iproc-static-adc", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, iproc_adc_of_match);
+
+static struct platform_driver iproc_adc_driver = {
+ .probe = iproc_adc_probe,
+ .remove = iproc_adc_remove,
+ .driver = {
+ .name = "iproc-static-adc",
+ .of_match_table = of_match_ptr(iproc_adc_of_match),
+ },
+};
+module_platform_driver(iproc_adc_driver);
+
+MODULE_DESCRIPTION("Broadcom iProc ADC controller driver");
+MODULE_AUTHOR("Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/cc10001_adc.c b/drivers/iio/adc/cc10001_adc.c
index 8254f529b2a9..91636c0ba5b5 100644
--- a/drivers/iio/adc/cc10001_adc.c
+++ b/drivers/iio/adc/cc10001_adc.c
@@ -186,7 +186,7 @@ static irqreturn_t cc10001_adc_trigger_h(int irq, void *p)
if (!sample_invalid)
iio_push_to_buffers_with_timestamp(indio_dev, data,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
index c73c6c62a6ac..678e8c7ea763 100644
--- a/drivers/iio/adc/hi8435.c
+++ b/drivers/iio/adc/hi8435.c
@@ -400,7 +400,7 @@ static void hi8435_iio_push_event(struct iio_dev *idev, unsigned int val)
iio_push_event(idev,
IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i,
IIO_EV_TYPE_THRESH, dir),
- iio_get_time_ns());
+ iio_get_time_ns(idev));
}
}
@@ -455,6 +455,7 @@ static int hi8435_probe(struct spi_device *spi)
mutex_init(&priv->lock);
idev->dev.parent = &spi->dev;
+ idev->dev.of_node = spi->dev.of_node;
idev->name = spi_get_device_id(spi)->name;
idev->modes = INDIO_DIRECT_MODE;
idev->info = &hi8435_info;
diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
index 502f2fbe8aef..955f3fdaf519 100644
--- a/drivers/iio/adc/ina2xx-adc.c
+++ b/drivers/iio/adc/ina2xx-adc.c
@@ -465,7 +465,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
s64 time_a, time_b;
unsigned int alert;
- time_a = iio_get_time_ns();
+ time_a = iio_get_time_ns(indio_dev);
/*
* Because the timer thread and the chip conversion clock
@@ -504,7 +504,7 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
data[i++] = val;
}
- time_b = iio_get_time_ns();
+ time_b = iio_get_time_ns(indio_dev);
iio_push_to_buffers_with_timestamp(indio_dev,
(unsigned int *)data, time_a);
@@ -554,7 +554,7 @@ static int ina2xx_buffer_enable(struct iio_dev *indio_dev)
dev_dbg(&indio_dev->dev, "Async readout mode: %d\n",
chip->allow_async_readout);
- chip->prev_ns = iio_get_time_ns();
+ chip->prev_ns = iio_get_time_ns(indio_dev);
chip->task = kthread_run(ina2xx_capture_thread, (void *)indio_dev,
"%s:%d-%uus", indio_dev->name, indio_dev->id,
@@ -691,6 +691,7 @@ static int ina2xx_probe(struct i2c_client *client,
indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.of_node = client->dev.of_node;
indio_dev->channels = ina2xx_channels;
indio_dev->num_channels = ARRAY_SIZE(ina2xx_channels);
indio_dev->name = id->name;
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 41d495c6035e..712fbd2b1f16 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -426,6 +426,7 @@ static int max1027_probe(struct spi_device *spi)
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->info = &max1027_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = st->info->channels;
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index 998dc3caad4c..841a13c9b6ea 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -25,6 +25,8 @@
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
@@ -788,7 +790,7 @@ static irqreturn_t max1363_event_handler(int irq, void *private)
{
struct iio_dev *indio_dev = private;
struct max1363_state *st = iio_priv(indio_dev);
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
unsigned long mask, loc;
u8 rx;
u8 tx[2] = { st->setupbyte,
@@ -1506,7 +1508,8 @@ static irqreturn_t max1363_trigger_handler(int irq, void *p)
if (b_sent < 0)
goto done_free;
- iio_push_to_buffers_with_timestamp(indio_dev, rxbuf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, rxbuf,
+ iio_get_time_ns(indio_dev));
done_free:
kfree(rxbuf);
@@ -1516,6 +1519,56 @@ static irqreturn_t max1363_trigger_handler(int irq, void *p)
return IRQ_HANDLED;
}
+#ifdef CONFIG_OF
+
+#define MAX1363_COMPATIBLE(of_compatible, cfg) { \
+ .compatible = of_compatible, \
+ .data = &max1363_chip_info_tbl[cfg], \
+}
+
+static const struct of_device_id max1363_of_match[] = {
+ MAX1363_COMPATIBLE("maxim,max1361", max1361),
+ MAX1363_COMPATIBLE("maxim,max1362", max1362),
+ MAX1363_COMPATIBLE("maxim,max1363", max1363),
+ MAX1363_COMPATIBLE("maxim,max1364", max1364),
+ MAX1363_COMPATIBLE("maxim,max1036", max1036),
+ MAX1363_COMPATIBLE("maxim,max1037", max1037),
+ MAX1363_COMPATIBLE("maxim,max1038", max1038),
+ MAX1363_COMPATIBLE("maxim,max1039", max1039),
+ MAX1363_COMPATIBLE("maxim,max1136", max1136),
+ MAX1363_COMPATIBLE("maxim,max1137", max1137),
+ MAX1363_COMPATIBLE("maxim,max1138", max1138),
+ MAX1363_COMPATIBLE("maxim,max1139", max1139),
+ MAX1363_COMPATIBLE("maxim,max1236", max1236),
+ MAX1363_COMPATIBLE("maxim,max1237", max1237),
+ MAX1363_COMPATIBLE("maxim,max1238", max1238),
+ MAX1363_COMPATIBLE("maxim,max1239", max1239),
+ MAX1363_COMPATIBLE("maxim,max11600", max11600),
+ MAX1363_COMPATIBLE("maxim,max11601", max11601),
+ MAX1363_COMPATIBLE("maxim,max11602", max11602),
+ MAX1363_COMPATIBLE("maxim,max11603", max11603),
+ MAX1363_COMPATIBLE("maxim,max11604", max11604),
+ MAX1363_COMPATIBLE("maxim,max11605", max11605),
+ MAX1363_COMPATIBLE("maxim,max11606", max11606),
+ MAX1363_COMPATIBLE("maxim,max11607", max11607),
+ MAX1363_COMPATIBLE("maxim,max11608", max11608),
+ MAX1363_COMPATIBLE("maxim,max11609", max11609),
+ MAX1363_COMPATIBLE("maxim,max11610", max11610),
+ MAX1363_COMPATIBLE("maxim,max11611", max11611),
+ MAX1363_COMPATIBLE("maxim,max11612", max11612),
+ MAX1363_COMPATIBLE("maxim,max11613", max11613),
+ MAX1363_COMPATIBLE("maxim,max11614", max11614),
+ MAX1363_COMPATIBLE("maxim,max11615", max11615),
+ MAX1363_COMPATIBLE("maxim,max11616", max11616),
+ MAX1363_COMPATIBLE("maxim,max11617", max11617),
+ MAX1363_COMPATIBLE("maxim,max11644", max11644),
+ MAX1363_COMPATIBLE("maxim,max11645", max11645),
+ MAX1363_COMPATIBLE("maxim,max11646", max11646),
+ MAX1363_COMPATIBLE("maxim,max11647", max11647),
+ { /* sentinel */ }
+};
+#endif
+
static int max1363_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -1523,6 +1576,7 @@ static int max1363_probe(struct i2c_client *client,
struct max1363_state *st;
struct iio_dev *indio_dev;
struct regulator *vref;
+ const struct of_device_id *match;
indio_dev = devm_iio_device_alloc(&client->dev,
sizeof(struct max1363_state));
@@ -1549,7 +1603,12 @@ static int max1363_probe(struct i2c_client *client,
/* this is only used for device removal purposes */
i2c_set_clientdata(client, indio_dev);
- st->chip_info = &max1363_chip_info_tbl[id->driver_data];
+ match = of_match_device(of_match_ptr(max1363_of_match),
+ &client->dev);
+ if (match)
+ st->chip_info = of_device_get_match_data(&client->dev);
+ else
+ st->chip_info = &max1363_chip_info_tbl[id->driver_data];
st->client = client;
st->vref_uv = st->chip_info->int_vref_mv * 1000;
@@ -1587,6 +1646,7 @@ static int max1363_probe(struct i2c_client *client,
/* Establish that the iio_dev is a child of the i2c device */
indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.of_node = client->dev.of_node;
indio_dev->name = id->name;
indio_dev->channels = st->chip_info->channels;
indio_dev->num_channels = st->chip_info->num_channels;
@@ -1692,6 +1752,7 @@ MODULE_DEVICE_TABLE(i2c, max1363_id);
static struct i2c_driver max1363_driver = {
.driver = {
.name = "max1363",
+ .of_match_table = of_match_ptr(max1363_of_match),
},
.probe = max1363_probe,
.remove = max1363_remove,
diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c
index a850ca7d1eda..634717ae12f3 100644
--- a/drivers/iio/adc/mcp320x.c
+++ b/drivers/iio/adc/mcp320x.c
@@ -308,6 +308,7 @@ static int mcp320x_probe(struct spi_device *spi)
adc->spi = spi;
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &mcp320x_info;
diff --git a/drivers/iio/adc/mcp3422.c b/drivers/iio/adc/mcp3422.c
index d1172dc1e8e2..254135e07792 100644
--- a/drivers/iio/adc/mcp3422.c
+++ b/drivers/iio/adc/mcp3422.c
@@ -352,6 +352,7 @@ static int mcp3422_probe(struct i2c_client *client,
mutex_init(&adc->lock);
indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.of_node = client->dev.of_node;
indio_dev->name = dev_name(&client->dev);
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &mcp3422_info;
diff --git a/drivers/iio/adc/nau7802.c b/drivers/iio/adc/nau7802.c
index 57365c504093..db9b829ccf0d 100644
--- a/drivers/iio/adc/nau7802.c
+++ b/drivers/iio/adc/nau7802.c
@@ -433,6 +433,7 @@ static int nau7802_probe(struct i2c_client *client,
i2c_set_clientdata(client, indio_dev);
indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.of_node = client->dev.of_node;
indio_dev->name = dev_name(&client->dev);
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &nau7802_info;
diff --git a/drivers/iio/adc/ti-adc081c.c b/drivers/iio/adc/ti-adc081c.c
index f8807adc08c4..319172cf7da8 100644
--- a/drivers/iio/adc/ti-adc081c.c
+++ b/drivers/iio/adc/ti-adc081c.c
@@ -139,7 +139,8 @@ static irqreturn_t adc081c_trigger_handler(int irq, void *p)
if (ret < 0)
goto out;
buf[0] = ret;
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
out:
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
@@ -185,6 +186,7 @@ static int adc081c_probe(struct i2c_client *client,
return err;
iio->dev.parent = &client->dev;
+ iio->dev.of_node = client->dev.of_node;
iio->name = dev_name(&client->dev);
iio->modes = INDIO_DIRECT_MODE;
iio->info = &adc081c_info;
diff --git a/drivers/iio/adc/ti-adc0832.c b/drivers/iio/adc/ti-adc0832.c
index 0afeac0c9bad..f4ba23effe9a 100644
--- a/drivers/iio/adc/ti-adc0832.c
+++ b/drivers/iio/adc/ti-adc0832.c
@@ -194,6 +194,7 @@ static int adc0832_probe(struct spi_device *spi)
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->info = &adc0832_info;
indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c
index bc58867d6e8d..89dfbd31be5c 100644
--- a/drivers/iio/adc/ti-adc128s052.c
+++ b/drivers/iio/adc/ti-adc128s052.c
@@ -150,6 +150,7 @@ static int adc128_probe(struct spi_device *spi)
spi_set_drvdata(spi, indio_dev);
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &adc128_info;
diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
index 8be192a84893..1ef398770a1f 100644
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -288,7 +288,8 @@ static irqreturn_t ads1015_trigger_handler(int irq, void *p)
buf[0] = res;
mutex_unlock(&data->lock);
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
err:
iio_trigger_notify_done(indio_dev->trig);
@@ -585,6 +586,7 @@ static int ads1015_probe(struct i2c_client *client,
mutex_init(&data->lock);
indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.of_node = client->dev.of_node;
indio_dev->name = ADS1015_DRV_NAME;
indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c
index 03e907028cb6..c400439900af 100644
--- a/drivers/iio/adc/ti-ads8688.c
+++ b/drivers/iio/adc/ti-ads8688.c
@@ -421,6 +421,7 @@ static int ads8688_probe(struct spi_device *spi)
indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->dev.parent = &spi->dev;
+ indio_dev->dev.of_node = spi->dev.of_node;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = st->chip_info->channels;
indio_dev->num_channels = st->chip_info->num_channels;
diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
index 653bf1379d2e..228a003adeed 100644
--- a/drivers/iio/adc/vf610_adc.c
+++ b/drivers/iio/adc/vf610_adc.c
@@ -594,7 +594,8 @@ static irqreturn_t vf610_adc_isr(int irq, void *dev_id)
if (iio_buffer_enabled(indio_dev)) {
info->buffer[0] = info->value;
iio_push_to_buffers_with_timestamp(indio_dev,
- info->buffer, iio_get_time_ns());
+ info->buffer,
+ iio_get_time_ns(indio_dev));
iio_trigger_notify_done(indio_dev->trig);
} else
complete(&info->completion);
diff --git a/drivers/iio/adc/xilinx-xadc-events.c b/drivers/iio/adc/xilinx-xadc-events.c
index edcf3aabd70d..6d5c2a6f4e6e 100644
--- a/drivers/iio/adc/xilinx-xadc-events.c
+++ b/drivers/iio/adc/xilinx-xadc-events.c
@@ -46,7 +46,7 @@ static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
} else {
/*
* For other channels we don't know whether it is a upper or
@@ -56,7 +56,7 @@ static void xadc_handle_event(struct iio_dev *indio_dev, unsigned int event)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
IIO_EV_TYPE_THRESH, IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
}
diff --git a/drivers/iio/chemical/atlas-ph-sensor.c b/drivers/iio/chemical/atlas-ph-sensor.c
index 02e85db5d31f..ae038a59d256 100644
--- a/drivers/iio/chemical/atlas-ph-sensor.c
+++ b/drivers/iio/chemical/atlas-ph-sensor.c
@@ -343,7 +343,7 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private)
if (!ret)
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/common/st_sensors/st_sensors_buffer.c b/drivers/iio/common/st_sensors/st_sensors_buffer.c
index 50afc0f8f16b..d06e728cea37 100644
--- a/drivers/iio/common/st_sensors/st_sensors_buffer.c
+++ b/drivers/iio/common/st_sensors/st_sensors_buffer.c
@@ -24,30 +24,29 @@
static int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf)
{
- int i, len;
- int total = 0;
+ int i;
struct st_sensor_data *sdata = iio_priv(indio_dev);
unsigned int num_data_channels = sdata->num_data_channels;
- for (i = 0; i < num_data_channels; i++) {
- unsigned int bytes_to_read;
+ for_each_set_bit(i, indio_dev->active_scan_mask, num_data_channels) {
+ const struct iio_chan_spec *channel = &indio_dev->channels[i];
+ unsigned int bytes_to_read = channel->scan_type.realbits >> 3;
+ unsigned int storage_bytes =
+ channel->scan_type.storagebits >> 3;
- if (test_bit(i, indio_dev->active_scan_mask)) {
- bytes_to_read = indio_dev->channels[i].scan_type.storagebits >> 3;
- len = sdata->tf->read_multiple_byte(&sdata->tb,
- sdata->dev, indio_dev->channels[i].address,
- bytes_to_read,
- buf + total, sdata->multiread_bit);
+ buf = PTR_ALIGN(buf, storage_bytes);
+ if (sdata->tf->read_multiple_byte(&sdata->tb, sdata->dev,
+ channel->address,
+ bytes_to_read, buf,
+ sdata->multiread_bit) <
+ bytes_to_read)
+ return -EIO;
- if (len < bytes_to_read)
- return -EIO;
-
- /* Advance the buffer pointer */
- total += len;
- }
+ /* Advance the buffer pointer */
+ buf += storage_bytes;
}
- return total;
+ return 0;
}
irqreturn_t st_sensors_trigger_handler(int irq, void *p)
@@ -58,11 +57,16 @@ irqreturn_t st_sensors_trigger_handler(int irq, void *p)
struct st_sensor_data *sdata = iio_priv(indio_dev);
s64 timestamp;
- /* If we do timetamping here, do it before reading the values */
+ /*
+ * If we do timetamping here, do it before reading the values, because
+ * once we've read the values, new interrupts can occur (when using
+ * the hardware trigger) and the hw_timestamp may get updated.
+ * By storing it in a local variable first, we are safe.
+ */
if (sdata->hw_irq_trigger)
timestamp = sdata->hw_timestamp;
else
- timestamp = iio_get_time_ns();
+ timestamp = iio_get_time_ns(indio_dev);
len = st_sensors_get_buffer_element(indio_dev, sdata->buffer_data);
if (len < 0)
diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c
index 6db12ea034d3..2d5282e05482 100644
--- a/drivers/iio/common/st_sensors/st_sensors_core.c
+++ b/drivers/iio/common/st_sensors/st_sensors_core.c
@@ -490,7 +490,7 @@ static int st_sensors_read_axis_data(struct iio_dev *indio_dev,
int err;
u8 *outdata;
struct st_sensor_data *sdata = iio_priv(indio_dev);
- unsigned int byte_for_channel = ch->scan_type.storagebits >> 3;
+ unsigned int byte_for_channel = ch->scan_type.realbits >> 3;
outdata = kmalloc(byte_for_channel, GFP_KERNEL);
if (!outdata)
@@ -550,7 +550,7 @@ int st_sensors_check_device_support(struct iio_dev *indio_dev,
int num_sensors_list,
const struct st_sensor_settings *sensor_settings)
{
- int i, n, err;
+ int i, n, err = 0;
u8 wai;
struct st_sensor_data *sdata = iio_priv(indio_dev);
@@ -570,17 +570,21 @@ int st_sensors_check_device_support(struct iio_dev *indio_dev,
return -ENODEV;
}
- err = sdata->tf->read_byte(&sdata->tb, sdata->dev,
- sensor_settings[i].wai_addr, &wai);
- if (err < 0) {
- dev_err(&indio_dev->dev, "failed to read Who-Am-I register.\n");
- return err;
- }
+ if (sensor_settings[i].wai_addr) {
+ err = sdata->tf->read_byte(&sdata->tb, sdata->dev,
+ sensor_settings[i].wai_addr, &wai);
+ if (err < 0) {
+ dev_err(&indio_dev->dev,
+ "failed to read Who-Am-I register.\n");
+ return err;
+ }
- if (sensor_settings[i].wai != wai) {
- dev_err(&indio_dev->dev, "%s: WhoAmI mismatch (0x%x).\n",
- indio_dev->name, wai);
- return -EINVAL;
+ if (sensor_settings[i].wai != wai) {
+ dev_err(&indio_dev->dev,
+ "%s: WhoAmI mismatch (0x%x).\n",
+ indio_dev->name, wai);
+ return -EINVAL;
+ }
}
sdata->sensor_settings =
diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c
index 296e4ff19ae8..e66f12ee8a55 100644
--- a/drivers/iio/common/st_sensors/st_sensors_trigger.c
+++ b/drivers/iio/common/st_sensors/st_sensors_trigger.c
@@ -17,6 +17,50 @@
#include <linux/iio/common/st_sensors.h>
#include "st_sensors_core.h"
+/**
+ * st_sensors_new_samples_available() - check if more samples came in
+ * returns:
+ * 0 - no new samples available
+ * 1 - new samples available
+ * negative - error or unknown
+ */
+static int st_sensors_new_samples_available(struct iio_dev *indio_dev,
+ struct st_sensor_data *sdata)
+{
+ u8 status;
+ int ret;
+
+ /* How would I know if I can't check it? */
+ if (!sdata->sensor_settings->drdy_irq.addr_stat_drdy)
+ return -EINVAL;
+
+ /* No scan mask, no interrupt */
+ if (!indio_dev->active_scan_mask)
+ return 0;
+
+ ret = sdata->tf->read_byte(&sdata->tb, sdata->dev,
+ sdata->sensor_settings->drdy_irq.addr_stat_drdy,
+ &status);
+ if (ret < 0) {
+ dev_err(sdata->dev,
+ "error checking samples available\n");
+ return ret;
+ }
+ /*
+ * the lower bits of .active_scan_mask[0] is directly mapped
+ * to the channels on the sensor: either bit 0 for
+ * one-dimensional sensors, or e.g. x,y,z for accelerometers,
+ * gyroscopes or magnetometers. No sensor use more than 3
+ * channels, so cut the other status bits here.
+ */
+ status &= 0x07;
+
+ if (status & (u8)indio_dev->active_scan_mask[0])
+ return 1;
+
+ return 0;
+}
+
/**
* st_sensors_irq_handler() - top half of the IRQ-based triggers
* @irq: irq number
@@ -29,7 +73,7 @@ irqreturn_t st_sensors_irq_handler(int irq, void *p)
struct st_sensor_data *sdata = iio_priv(indio_dev);
/* Get the time stamp as close in time as possible */
- sdata->hw_timestamp = iio_get_time_ns();
+ sdata->hw_timestamp = iio_get_time_ns(indio_dev);
return IRQ_WAKE_THREAD;
}
@@ -43,44 +87,43 @@ irqreturn_t st_sensors_irq_thread(int irq, void *p)
struct iio_trigger *trig = p;
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
struct st_sensor_data *sdata = iio_priv(indio_dev);
- int ret;
/*
* If this trigger is backed by a hardware interrupt and we have a
- * status register, check if this IRQ came from us
+ * status register, check if this IRQ came from us. Notice that
+ * we will process also if st_sensors_new_samples_available()
+ * returns negative: if we can't check status, then poll
+ * unconditionally.
*/
- if (sdata->sensor_settings->drdy_irq.addr_stat_drdy) {
- u8 status;
-
- ret = sdata->tf->read_byte(&sdata->tb, sdata->dev,
- sdata->sensor_settings->drdy_irq.addr_stat_drdy,
- &status);
- if (ret < 0) {
- dev_err(sdata->dev, "could not read channel status\n");
- goto out_poll;
- }
- /*
- * the lower bits of .active_scan_mask[0] is directly mapped
- * to the channels on the sensor: either bit 0 for
- * one-dimensional sensors, or e.g. x,y,z for accelerometers,
- * gyroscopes or magnetometers. No sensor use more than 3
- * channels, so cut the other status bits here.
- */
- status &= 0x07;
-
- /*
- * If this was not caused by any channels on this sensor,
- * return IRQ_NONE
- */
- if (!indio_dev->active_scan_mask)
- return IRQ_NONE;
- if (!(status & (u8)indio_dev->active_scan_mask[0]))
- return IRQ_NONE;
+ if (sdata->hw_irq_trigger &&
+ st_sensors_new_samples_available(indio_dev, sdata)) {
+ iio_trigger_poll_chained(p);
+ } else {
+ dev_dbg(sdata->dev, "spurious IRQ\n");
+ return IRQ_NONE;
+ }
+
+ /*
+ * If we have proper level IRQs the handler will be re-entered if
+ * the line is still active, so return here and come back in through
+ * the top half if need be.
+ */
+ if (!sdata->edge_irq)
+ return IRQ_HANDLED;
+
+ /*
+ * If we are using egde IRQs, new samples arrived while processing
+ * the IRQ and those may be missed unless we pick them here, so poll
+ * again. If the sensor delivery frequency is very high, this thread
+ * turns into a polled loop handler.
+ */
+ while (sdata->hw_irq_trigger &&
+ st_sensors_new_samples_available(indio_dev, sdata)) {
+ dev_dbg(sdata->dev, "more samples came in during polling\n");
+ sdata->hw_timestamp = iio_get_time_ns(indio_dev);
+ iio_trigger_poll_chained(p);
}
-out_poll:
- /* It's our IRQ: proceed to handle the register polling */
- iio_trigger_poll_chained(p);
return IRQ_HANDLED;
}
@@ -107,13 +150,18 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
* If the IRQ is triggered on falling edge, we need to mark the
* interrupt as active low, if the hardware supports this.
*/
- if (irq_trig == IRQF_TRIGGER_FALLING) {
+ switch(irq_trig) {
+ case IRQF_TRIGGER_FALLING:
+ case IRQF_TRIGGER_LOW:
if (!sdata->sensor_settings->drdy_irq.addr_ihl) {
dev_err(&indio_dev->dev,
- "falling edge specified for IRQ but hardware "
- "only support rising edge, will request "
- "rising edge\n");
- irq_trig = IRQF_TRIGGER_RISING;
+ "falling/low specified for IRQ "
+ "but hardware only support rising/high: "
+ "will request rising/high\n");
+ if (irq_trig == IRQF_TRIGGER_FALLING)
+ irq_trig = IRQF_TRIGGER_RISING;
+ if (irq_trig == IRQF_TRIGGER_LOW)
+ irq_trig = IRQF_TRIGGER_HIGH;
} else {
/* Set up INT active low i.e. falling edge */
err = st_sensors_write_data_with_mask(indio_dev,
@@ -122,20 +170,39 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
if (err < 0)
goto iio_trigger_free;
dev_info(&indio_dev->dev,
- "interrupts on the falling edge\n");
+ "interrupts on the falling edge or "
+ "active low level\n");
}
- } else if (irq_trig == IRQF_TRIGGER_RISING) {
+ break;
+ case IRQF_TRIGGER_RISING:
dev_info(&indio_dev->dev,
"interrupts on the rising edge\n");
-
- } else {
+ break;
+ case IRQF_TRIGGER_HIGH:
+ dev_info(&indio_dev->dev,
+ "interrupts active high level\n");
+ break;
+ default:
+ /* This is the most preferred mode, if possible */
dev_err(&indio_dev->dev,
- "unsupported IRQ trigger specified (%lx), only "
- "rising and falling edges supported, enforce "
+ "unsupported IRQ trigger specified (%lx), enforce "
"rising edge\n", irq_trig);
irq_trig = IRQF_TRIGGER_RISING;
}
+ /* Tell the interrupt handler that we're dealing with edges */
+ if (irq_trig == IRQF_TRIGGER_FALLING ||
+ irq_trig == IRQF_TRIGGER_RISING)
+ sdata->edge_irq = true;
+ else
+ /*
+ * If we're not using edges (i.e. level interrupts) we
+ * just mask off the IRQ, handle one interrupt, then
+ * if the line is still low, we return to the
+ * interrupt handler top half again and start over.
+ */
+ irq_trig |= IRQF_ONESHOT;
+
/*
* If the interrupt pin is Open Drain, by definition this
* means that the interrupt line may be shared with other
@@ -148,9 +215,6 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
sdata->sensor_settings->drdy_irq.addr_stat_drdy)
irq_trig |= IRQF_SHARED;
- /* Let's create an interrupt thread masking the hard IRQ here */
- irq_trig |= IRQF_ONESHOT;
-
err = request_threaded_irq(sdata->get_irq_data_ready(indio_dev),
st_sensors_irq_handler,
st_sensors_irq_thread,
diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c
index 968712be967f..559061ab1982 100644
--- a/drivers/iio/dac/ad5421.c
+++ b/drivers/iio/dac/ad5421.c
@@ -242,7 +242,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
if (events & AD5421_FAULT_UNDER_CURRENT) {
@@ -251,7 +251,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
if (events & AD5421_FAULT_TEMP_OVER_140) {
@@ -260,7 +260,7 @@ static irqreturn_t ad5421_fault_handler(int irq, void *data)
0,
IIO_EV_TYPE_MAG,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
old_fault = fault;
diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c
index 4e4c20d6d8b5..788b3d6fd1cc 100644
--- a/drivers/iio/dac/ad5504.c
+++ b/drivers/iio/dac/ad5504.c
@@ -223,7 +223,7 @@ static irqreturn_t ad5504_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns((struct iio_dev *)private));
return IRQ_HANDLED;
}
diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c
index cf44a6f79431..b383892a5193 100644
--- a/drivers/iio/dummy/iio_simple_dummy_buffer.c
+++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c
@@ -85,7 +85,8 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p)
}
}
- iio_push_to_buffers_with_timestamp(indio_dev, data, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, data,
+ iio_get_time_ns(indio_dev));
kfree(data);
diff --git a/drivers/iio/dummy/iio_simple_dummy_events.c b/drivers/iio/dummy/iio_simple_dummy_events.c
index 6eb600ff7056..ed63ffd849f8 100644
--- a/drivers/iio/dummy/iio_simple_dummy_events.c
+++ b/drivers/iio/dummy/iio_simple_dummy_events.c
@@ -158,7 +158,7 @@ static irqreturn_t iio_simple_dummy_get_timestamp(int irq, void *private)
struct iio_dev *indio_dev = private;
struct iio_dummy_state *st = iio_priv(indio_dev);
- st->event_timestamp = iio_get_time_ns();
+ st->event_timestamp = iio_get_time_ns(indio_dev);
return IRQ_WAKE_THREAD;
}
diff --git a/drivers/iio/gyro/bmg160_core.c b/drivers/iio/gyro/bmg160_core.c
index 7ccc044063f6..f7fcfa886f72 100644
--- a/drivers/iio/gyro/bmg160_core.c
+++ b/drivers/iio/gyro/bmg160_core.c
@@ -50,6 +50,7 @@
#define BMG160_REG_PMU_BW 0x10
#define BMG160_NO_FILTER 0
#define BMG160_DEF_BW 100
+#define BMG160_REG_PMU_BW_RES BIT(7)
#define BMG160_REG_INT_MAP_0 0x17
#define BMG160_INT_MAP_0_BIT_ANY BIT(1)
@@ -100,7 +101,6 @@ struct bmg160_data {
struct iio_trigger *motion_trig;
struct mutex mutex;
s16 buffer[8];
- u8 bw_bits;
u32 dps_range;
int ev_enable_state;
int slope_thres;
@@ -117,13 +117,16 @@ enum bmg160_axis {
};
static const struct {
- int val;
+ int odr;
+ int filter;
int bw_bits;
-} bmg160_samp_freq_table[] = { {100, 0x07},
- {200, 0x06},
- {400, 0x03},
- {1000, 0x02},
- {2000, 0x01} };
+} bmg160_samp_freq_table[] = { {100, 32, 0x07},
+ {200, 64, 0x06},
+ {100, 12, 0x05},
+ {200, 23, 0x04},
+ {400, 47, 0x03},
+ {1000, 116, 0x02},
+ {2000, 230, 0x01} };
static const struct {
int scale;
@@ -153,7 +156,7 @@ static int bmg160_convert_freq_to_bit(int val)
int i;
for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) {
- if (bmg160_samp_freq_table[i].val == val)
+ if (bmg160_samp_freq_table[i].odr == val)
return bmg160_samp_freq_table[i].bw_bits;
}
@@ -176,7 +179,53 @@ static int bmg160_set_bw(struct bmg160_data *data, int val)
return ret;
}
- data->bw_bits = bw_bits;
+ return 0;
+}
+
+static int bmg160_get_filter(struct bmg160_data *data, int *val)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+ int ret;
+ int i;
+ unsigned int bw_bits;
+
+ ret = regmap_read(data->regmap, BMG160_REG_PMU_BW, &bw_bits);
+ if (ret < 0) {
+ dev_err(dev, "Error reading reg_pmu_bw\n");
+ return ret;
+ }
+
+ /* Ignore the readonly reserved bit. */
+ bw_bits &= ~BMG160_REG_PMU_BW_RES;
+
+ for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) {
+ if (bmg160_samp_freq_table[i].bw_bits == bw_bits)
+ break;
+ }
+
+ *val = bmg160_samp_freq_table[i].filter;
+
+ return ret ? ret : IIO_VAL_INT;
+}
+
+
+static int bmg160_set_filter(struct bmg160_data *data, int val)
+{
+ struct device *dev = regmap_get_device(data->regmap);
+ int ret;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) {
+ if (bmg160_samp_freq_table[i].filter == val)
+ break;
+ }
+
+ ret = regmap_write(data->regmap, BMG160_REG_PMU_BW,
+ bmg160_samp_freq_table[i].bw_bits);
+ if (ret < 0) {
+ dev_err(dev, "Error writing reg_pmu_bw\n");
+ return ret;
+ }
return 0;
}
@@ -386,11 +435,23 @@ static int bmg160_setup_new_data_interrupt(struct bmg160_data *data,
static int bmg160_get_bw(struct bmg160_data *data, int *val)
{
+ struct device *dev = regmap_get_device(data->regmap);
int i;
+ unsigned int bw_bits;
+ int ret;
+
+ ret = regmap_read(data->regmap, BMG160_REG_PMU_BW, &bw_bits);
+ if (ret < 0) {
+ dev_err(dev, "Error reading reg_pmu_bw\n");
+ return ret;
+ }
+
+ /* Ignore the readonly reserved bit. */
+ bw_bits &= ~BMG160_REG_PMU_BW_RES;
for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) {
- if (bmg160_samp_freq_table[i].bw_bits == data->bw_bits) {
- *val = bmg160_samp_freq_table[i].val;
+ if (bmg160_samp_freq_table[i].bw_bits == bw_bits) {
+ *val = bmg160_samp_freq_table[i].odr;
return IIO_VAL_INT;
}
}
@@ -507,6 +568,8 @@ static int bmg160_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
} else
return -EINVAL;
+ case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+ return bmg160_get_filter(data, val);
case IIO_CHAN_INFO_SCALE:
*val = 0;
switch (chan->type) {
@@ -571,6 +634,26 @@ static int bmg160_write_raw(struct iio_dev *indio_dev,
ret = bmg160_set_power_state(data, false);
mutex_unlock(&data->mutex);
return ret;
+ case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+ if (val2)
+ return -EINVAL;
+
+ mutex_lock(&data->mutex);
+ ret = bmg160_set_power_state(data, true);
+ if (ret < 0) {
+ bmg160_set_power_state(data, false);
+ mutex_unlock(&data->mutex);
+ return ret;
+ }
+ ret = bmg160_set_filter(data, val);
+ if (ret < 0) {
+ bmg160_set_power_state(data, false);
+ mutex_unlock(&data->mutex);
+ return ret;
+ }
+ ret = bmg160_set_power_state(data, false);
+ mutex_unlock(&data->mutex);
+ return ret;
case IIO_CHAN_INFO_SCALE:
if (val)
return -EINVAL;
@@ -728,7 +811,8 @@ static const struct iio_event_spec bmg160_event = {
.channel2 = IIO_MOD_##_axis, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
- BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+ BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
.scan_index = AXIS_##_axis, \
.scan_type = { \
.sign = 's', \
@@ -885,25 +969,25 @@ static irqreturn_t bmg160_event_handler(int irq, void *private)
if (val & BMG160_ANY_MOTION_BIT_X)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
- 0,
- IIO_MOD_X,
- IIO_EV_TYPE_ROC,
- dir),
- iio_get_time_ns());
+ 0,
+ IIO_MOD_X,
+ IIO_EV_TYPE_ROC,
+ dir),
+ iio_get_time_ns(indio_dev));
if (val & BMG160_ANY_MOTION_BIT_Y)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
- 0,
- IIO_MOD_Y,
- IIO_EV_TYPE_ROC,
- dir),
- iio_get_time_ns());
+ 0,
+ IIO_MOD_Y,
+ IIO_EV_TYPE_ROC,
+ dir),
+ iio_get_time_ns(indio_dev));
if (val & BMG160_ANY_MOTION_BIT_Z)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
- 0,
- IIO_MOD_Z,
- IIO_EV_TYPE_ROC,
- dir),
- iio_get_time_ns());
+ 0,
+ IIO_MOD_Z,
+ IIO_EV_TYPE_ROC,
+ dir),
+ iio_get_time_ns(indio_dev));
ack_intr_status:
if (!data->dready_trigger_on) {
diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
index 359883525ab7..4c45488e3a7f 100644
--- a/drivers/iio/iio_core.h
+++ b/drivers/iio/iio_core.h
@@ -79,4 +79,7 @@ void iio_device_unregister_eventset(struct iio_dev *indio_dev);
void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
int iio_event_getfd(struct iio_dev *indio_dev);
+struct iio_event_interface;
+bool iio_event_enabled(const struct iio_event_interface *ev_int);
+
#endif
diff --git a/drivers/iio/imu/bmi160/bmi160_core.c b/drivers/iio/imu/bmi160/bmi160_core.c
index 97928d558a15..e0251b8c1a52 100644
--- a/drivers/iio/imu/bmi160/bmi160_core.c
+++ b/drivers/iio/imu/bmi160/bmi160_core.c
@@ -411,7 +411,8 @@ static irqreturn_t bmi160_trigger_handler(int irq, void *p)
buf[j++] = sample;
}
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
diff --git a/drivers/iio/imu/inv_mpu6050/Kconfig b/drivers/iio/imu/inv_mpu6050/Kconfig
index f756feecfa4c..5483b2ea754d 100644
--- a/drivers/iio/imu/inv_mpu6050/Kconfig
+++ b/drivers/iio/imu/inv_mpu6050/Kconfig
@@ -13,8 +13,8 @@ config INV_MPU6050_I2C
select INV_MPU6050_IIO
select REGMAP_I2C
help
- This driver supports the Invensense MPU6050/6500/9150 motion tracking
- devices over I2C.
+ This driver supports the Invensense MPU6050/6500/9150 and ICM20608
+ motion tracking devices over I2C.
This driver can be built as a module. The module will be called
inv-mpu6050-i2c.
@@ -24,7 +24,7 @@ config INV_MPU6050_SPI
select INV_MPU6050_IIO
select REGMAP_SPI
help
- This driver supports the Invensense MPU6000/6500/9150 motion tracking
- devices over SPI.
+ This driver supports the Invensense MPU6050/6500/9150 and ICM20608
+ motion tracking devices over SPI.
This driver can be built as a module. The module will be called
inv-mpu6050-spi.
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
index ee40dae5ab58..b9fcbf18aa99 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
@@ -113,6 +113,12 @@ static const struct inv_mpu6050_hw hw_info[] = {
.reg = ®_set_6050,
.config = &chip_config_6050,
},
+ {
+ .whoami = INV_ICM20608_WHOAMI_VALUE,
+ .name = "ICM20608",
+ .reg = ®_set_6500,
+ .config = &chip_config_6050,
+ },
};
int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en, u32 mask)
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
index e1fd7fa53e3b..19580d1db597 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
@@ -170,6 +170,7 @@ static const struct i2c_device_id inv_mpu_id[] = {
{"mpu6050", INV_MPU6050},
{"mpu6500", INV_MPU6500},
{"mpu9150", INV_MPU9150},
+ {"icm20608", INV_ICM20608},
{}
};
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
index 3bf8544ccc9f..f0e8c5dd9fae 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
@@ -70,6 +70,7 @@ enum inv_devices {
INV_MPU6500,
INV_MPU6000,
INV_MPU9150,
+ INV_ICM20608,
INV_NUM_PARTS
};
@@ -225,6 +226,7 @@ struct inv_mpu6050_state {
#define INV_MPU6050_WHOAMI_VALUE 0x68
#define INV_MPU6500_WHOAMI_VALUE 0x70
#define INV_MPU9150_WHOAMI_VALUE 0x68
+#define INV_ICM20608_WHOAMI_VALUE 0xAF
/* scan element definition */
enum inv_mpu6050_scan {
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
index d0700628ee6d..3a9f3eac91ab 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
@@ -107,7 +107,7 @@ irqreturn_t inv_mpu6050_irq_handler(int irq, void *p)
struct inv_mpu6050_state *st = iio_priv(indio_dev);
s64 timestamp;
- timestamp = iio_get_time_ns();
+ timestamp = iio_get_time_ns(indio_dev);
kfifo_in_spinlocked(&st->timestamps, ×tamp, 1,
&st->time_stamp_lock);
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
index 190a4a51c830..6e6476dfa188 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
@@ -82,6 +82,7 @@ static const struct spi_device_id inv_mpu_id[] = {
{"mpu6000", INV_MPU6000},
{"mpu6500", INV_MPU6500},
{"mpu9150", INV_MPU9150},
+ {"icm20608", INV_ICM20608},
{}
};
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 2a85bd888619..f914d5d140e4 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -178,6 +178,86 @@ ssize_t iio_read_const_attr(struct device *dev,
}
EXPORT_SYMBOL(iio_read_const_attr);
+static int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
+{
+ int ret;
+ const struct iio_event_interface *ev_int = indio_dev->event_interface;
+
+ ret = mutex_lock_interruptible(&indio_dev->mlock);
+ if (ret)
+ return ret;
+ if ((ev_int && iio_event_enabled(ev_int)) ||
+ iio_buffer_enabled(indio_dev)) {
+ mutex_unlock(&indio_dev->mlock);
+ return -EBUSY;
+ }
+ indio_dev->clock_id = clock_id;
+ mutex_unlock(&indio_dev->mlock);
+
+ return 0;
+}
+
+/**
+ * iio_get_time_ns() - utility function to get a time stamp for events etc
+ * @indio_dev: device
+ */
+s64 iio_get_time_ns(const struct iio_dev *indio_dev)
+{
+ struct timespec tp;
+
+ switch (iio_device_get_clock(indio_dev)) {
+ case CLOCK_REALTIME:
+ ktime_get_real_ts(&tp);
+ break;
+ case CLOCK_MONOTONIC:
+ ktime_get_ts(&tp);
+ break;
+ case CLOCK_MONOTONIC_RAW:
+ getrawmonotonic(&tp);
+ break;
+ case CLOCK_REALTIME_COARSE:
+ tp = current_kernel_time();
+ break;
+ case CLOCK_MONOTONIC_COARSE:
+ tp = get_monotonic_coarse();
+ break;
+ case CLOCK_BOOTTIME:
+ get_monotonic_boottime(&tp);
+ break;
+ case CLOCK_TAI:
+ timekeeping_clocktai(&tp);
+ break;
+ default:
+ BUG();
+ }
+
+ return timespec_to_ns(&tp);
+}
+EXPORT_SYMBOL(iio_get_time_ns);
+
+/**
+ * iio_get_time_res() - utility function to get time stamp clock resolution in
+ * nano seconds.
+ * @indio_dev: device
+ */
+unsigned int iio_get_time_res(const struct iio_dev *indio_dev)
+{
+ switch (iio_device_get_clock(indio_dev)) {
+ case CLOCK_REALTIME:
+ case CLOCK_MONOTONIC:
+ case CLOCK_MONOTONIC_RAW:
+ case CLOCK_BOOTTIME:
+ case CLOCK_TAI:
+ return hrtimer_resolution;
+ case CLOCK_REALTIME_COARSE:
+ case CLOCK_MONOTONIC_COARSE:
+ return LOW_RES_NSEC;
+ default:
+ BUG();
+ }
+}
+EXPORT_SYMBOL(iio_get_time_res);
+
static int __init iio_init(void)
{
int ret;
@@ -990,11 +1070,91 @@ static ssize_t iio_show_dev_name(struct device *dev,
static DEVICE_ATTR(name, S_IRUGO, iio_show_dev_name, NULL);
+static ssize_t iio_show_timestamp_clock(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ const struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ const clockid_t clk = iio_device_get_clock(indio_dev);
+ const char *name;
+ ssize_t sz;
+
+ switch (clk) {
+ case CLOCK_REALTIME:
+ name = "realtime\n";
+ sz = sizeof("realtime\n");
+ break;
+ case CLOCK_MONOTONIC:
+ name = "monotonic\n";
+ sz = sizeof("monotonic\n");
+ break;
+ case CLOCK_MONOTONIC_RAW:
+ name = "monotonic_raw\n";
+ sz = sizeof("monotonic_raw\n");
+ break;
+ case CLOCK_REALTIME_COARSE:
+ name = "realtime_coarse\n";
+ sz = sizeof("realtime_coarse\n");
+ break;
+ case CLOCK_MONOTONIC_COARSE:
+ name = "monotonic_coarse\n";
+ sz = sizeof("monotonic_coarse\n");
+ break;
+ case CLOCK_BOOTTIME:
+ name = "boottime\n";
+ sz = sizeof("boottime\n");
+ break;
+ case CLOCK_TAI:
+ name = "tai\n";
+ sz = sizeof("tai\n");
+ break;
+ default:
+ BUG();
+ }
+
+ memcpy(buf, name, sz);
+ return sz;
+}
+
+static ssize_t iio_store_timestamp_clock(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ clockid_t clk;
+ int ret;
+
+ if (sysfs_streq(buf, "realtime"))
+ clk = CLOCK_REALTIME;
+ else if (sysfs_streq(buf, "monotonic"))
+ clk = CLOCK_MONOTONIC;
+ else if (sysfs_streq(buf, "monotonic_raw"))
+ clk = CLOCK_MONOTONIC_RAW;
+ else if (sysfs_streq(buf, "realtime_coarse"))
+ clk = CLOCK_REALTIME_COARSE;
+ else if (sysfs_streq(buf, "monotonic_coarse"))
+ clk = CLOCK_MONOTONIC_COARSE;
+ else if (sysfs_streq(buf, "boottime"))
+ clk = CLOCK_BOOTTIME;
+ else if (sysfs_streq(buf, "tai"))
+ clk = CLOCK_TAI;
+ else
+ return -EINVAL;
+
+ ret = iio_device_set_clock(dev_to_iio_dev(dev), clk);
+ if (ret)
+ return ret;
+
+ return len;
+}
+
+static DEVICE_ATTR(current_timestamp_clock, S_IRUGO | S_IWUSR,
+ iio_show_timestamp_clock, iio_store_timestamp_clock);
+
static int iio_device_register_sysfs(struct iio_dev *indio_dev)
{
int i, ret = 0, attrcount, attrn, attrcount_orig = 0;
struct iio_dev_attr *p;
- struct attribute **attr;
+ struct attribute **attr, *clk = NULL;
/* First count elements in any existing group */
if (indio_dev->info->attrs) {
@@ -1009,16 +1169,25 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
*/
if (indio_dev->channels)
for (i = 0; i < indio_dev->num_channels; i++) {
- ret = iio_device_add_channel_sysfs(indio_dev,
- &indio_dev
- ->channels[i]);
+ const struct iio_chan_spec *chan =
+ &indio_dev->channels[i];
+
+ if (chan->type == IIO_TIMESTAMP)
+ clk = &dev_attr_current_timestamp_clock.attr;
+
+ ret = iio_device_add_channel_sysfs(indio_dev, chan);
if (ret < 0)
goto error_clear_attrs;
attrcount += ret;
}
+ if (indio_dev->event_interface)
+ clk = &dev_attr_current_timestamp_clock.attr;
+
if (indio_dev->name)
attrcount++;
+ if (clk)
+ attrcount++;
indio_dev->chan_attr_group.attrs = kcalloc(attrcount + 1,
sizeof(indio_dev->chan_attr_group.attrs[0]),
@@ -1039,6 +1208,8 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
indio_dev->chan_attr_group.attrs[attrn++] = &p->dev_attr.attr;
if (indio_dev->name)
indio_dev->chan_attr_group.attrs[attrn++] = &dev_attr_name.attr;
+ if (clk)
+ indio_dev->chan_attr_group.attrs[attrn++] = clk;
indio_dev->groups[indio_dev->groupcounter++] =
&indio_dev->chan_attr_group;
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index cae332b1d7ea..0ebfc923a997 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -44,6 +44,11 @@ struct iio_event_interface {
struct mutex read_lock;
};
+bool iio_event_enabled(const struct iio_event_interface *ev_int)
+{
+ return !!test_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
+}
+
/**
* iio_push_event() - try to add event to the list for userspace reading
* @indio_dev: IIO device structure
@@ -60,7 +65,7 @@ int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp)
int copied;
/* Does anyone care? */
- if (test_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
+ if (iio_event_enabled(ev_int)) {
ev.id = ev_code;
ev.timestamp = timestamp;
@@ -180,8 +185,14 @@ int iio_event_getfd(struct iio_dev *indio_dev)
if (ev_int == NULL)
return -ENODEV;
- if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags))
- return -EBUSY;
+ fd = mutex_lock_interruptible(&indio_dev->mlock);
+ if (fd)
+ return fd;
+
+ if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {
+ fd = -EBUSY;
+ goto unlock;
+ }
iio_device_get(indio_dev);
@@ -194,6 +205,8 @@ int iio_event_getfd(struct iio_dev *indio_dev)
kfifo_reset_out(&ev_int->det_events);
}
+unlock:
+ mutex_unlock(&indio_dev->mlock);
return fd;
}
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 98457f044aa5..7ad82fdd3e5b 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -289,7 +289,7 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
irqreturn_t iio_pollfunc_store_time(int irq, void *p)
{
struct iio_poll_func *pf = p;
- pf->timestamp = iio_get_time_ns();
+ pf->timestamp = iio_get_time_ns(pf->indio_dev);
return IRQ_WAKE_THREAD;
}
EXPORT_SYMBOL(iio_pollfunc_store_time);
diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c
index 53201d99a16c..f0b47c501f4e 100644
--- a/drivers/iio/light/acpi-als.c
+++ b/drivers/iio/light/acpi-als.c
@@ -118,7 +118,7 @@ static void acpi_als_notify(struct acpi_device *device, u32 event)
struct iio_dev *indio_dev = acpi_driver_data(device);
struct acpi_als *als = iio_priv(indio_dev);
s32 *buffer = als->evt_buffer;
- s64 time_ns = iio_get_time_ns();
+ s64 time_ns = iio_get_time_ns(indio_dev);
s32 val;
int ret;
diff --git a/drivers/iio/light/adjd_s311.c b/drivers/iio/light/adjd_s311.c
index 09ad5f1ce539..0113fc843a81 100644
--- a/drivers/iio/light/adjd_s311.c
+++ b/drivers/iio/light/adjd_s311.c
@@ -118,7 +118,7 @@ static irqreturn_t adjd_s311_trigger_handler(int irq, void *p)
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct adjd_s311_data *data = iio_priv(indio_dev);
- s64 time_ns = iio_get_time_ns();
+ s64 time_ns = iio_get_time_ns(indio_dev);
int i, j = 0;
int ret = adjd_s311_req_data(indio_dev);
diff --git a/drivers/iio/light/apds9300.c b/drivers/iio/light/apds9300.c
index e1b9fa5a7e91..649b26f67813 100644
--- a/drivers/iio/light/apds9300.c
+++ b/drivers/iio/light/apds9300.c
@@ -396,7 +396,7 @@ static irqreturn_t apds9300_interrupt_handler(int irq, void *private)
IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(dev_info));
apds9300_clear_intr(data);
diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c
index 651d57b8abbf..a4304edc3e0f 100644
--- a/drivers/iio/light/apds9960.c
+++ b/drivers/iio/light/apds9960.c
@@ -807,7 +807,7 @@ static irqreturn_t apds9960_interrupt_handler(int irq, void *private)
IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
regmap_write(data->regmap, APDS9960_REG_CICLEAR, 1);
}
@@ -816,7 +816,7 @@ static irqreturn_t apds9960_interrupt_handler(int irq, void *private)
IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
regmap_write(data->regmap, APDS9960_REG_PICLEAR, 1);
}
diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
index c8d7b5ea7e78..9d66e89c57ef 100644
--- a/drivers/iio/light/cm36651.c
+++ b/drivers/iio/light/cm36651.c
@@ -268,7 +268,7 @@ static irqreturn_t cm36651_irq_handler(int irq, void *data)
CM36651_CMD_READ_RAW_PROXIMITY,
IIO_EV_TYPE_THRESH, ev_dir);
- iio_push_event(indio_dev, ev_code, iio_get_time_ns());
+ iio_push_event(indio_dev, ev_code, iio_get_time_ns(indio_dev));
return IRQ_HANDLED;
}
diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
index af73af3586a9..6ada9149f142 100644
--- a/drivers/iio/light/gp2ap020a00f.c
+++ b/drivers/iio/light/gp2ap020a00f.c
@@ -851,7 +851,7 @@ static irqreturn_t gp2ap020a00f_prox_sensing_handler(int irq, void *data)
GP2AP020A00F_SCAN_MODE_PROXIMITY,
IIO_EV_TYPE_ROC,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
} else {
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(
@@ -859,7 +859,7 @@ static irqreturn_t gp2ap020a00f_prox_sensing_handler(int irq, void *data)
GP2AP020A00F_SCAN_MODE_PROXIMITY,
IIO_EV_TYPE_ROC,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
}
@@ -925,7 +925,7 @@ static irqreturn_t gp2ap020a00f_thresh_event_handler(int irq, void *data)
IIO_MOD_LIGHT_CLEAR,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
if (test_bit(GP2AP020A00F_FLAG_ALS_FALLING_EV, &priv->flags)) {
@@ -939,7 +939,7 @@ static irqreturn_t gp2ap020a00f_thresh_event_handler(int irq, void *data)
IIO_MOD_LIGHT_CLEAR,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
}
diff --git a/drivers/iio/light/isl29125.c b/drivers/iio/light/isl29125.c
index a6b9d66233d5..1d2c0c8a1d4f 100644
--- a/drivers/iio/light/isl29125.c
+++ b/drivers/iio/light/isl29125.c
@@ -44,6 +44,9 @@
#define ISL29125_MODE_B 0x3
#define ISL29125_MODE_RGB 0x5
+#define ISL29125_SENSING_RANGE_0 5722 /* 375 lux full range */
+#define ISL29125_SENSING_RANGE_1 152590 /* 10k lux full range */
+
#define ISL29125_MODE_RANGE BIT(3)
#define ISL29125_STATUS_CONV BIT(1)
@@ -139,9 +142,9 @@ static int isl29125_read_raw(struct iio_dev *indio_dev,
case IIO_CHAN_INFO_SCALE:
*val = 0;
if (data->conf1 & ISL29125_MODE_RANGE)
- *val2 = 152590; /* 10k lux full range */
+ *val2 = ISL29125_SENSING_RANGE_1; /*10k lux full range*/
else
- *val2 = 5722; /* 375 lux full range */
+ *val2 = ISL29125_SENSING_RANGE_0; /*375 lux full range*/
return IIO_VAL_INT_PLUS_MICRO;
}
return -EINVAL;
@@ -157,9 +160,9 @@ static int isl29125_write_raw(struct iio_dev *indio_dev,
case IIO_CHAN_INFO_SCALE:
if (val != 0)
return -EINVAL;
- if (val2 == 152590)
+ if (val2 == ISL29125_SENSING_RANGE_1)
data->conf1 |= ISL29125_MODE_RANGE;
- else if (val2 == 5722)
+ else if (val2 == ISL29125_SENSING_RANGE_0)
data->conf1 &= ~ISL29125_MODE_RANGE;
else
return -EINVAL;
@@ -188,7 +191,7 @@ static irqreturn_t isl29125_trigger_handler(int irq, void *p)
}
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index e56937c40a18..f409c2047c05 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -267,7 +267,7 @@ static irqreturn_t lm3533_als_isr(int irq, void *dev_id)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
out:
return IRQ_HANDLED;
}
diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
index 6bf89d8f3741..3afc53a3d0b6 100644
--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -1256,7 +1256,8 @@ static irqreturn_t ltr501_trigger_handler(int irq, void *p)
buf[j++] = psdata & LTR501_PS_DATA_MASK;
}
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
@@ -1282,14 +1283,14 @@ static irqreturn_t ltr501_interrupt_handler(int irq, void *private)
IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
if (status & LTR501_STATUS_PS_INTR)
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
return IRQ_HANDLED;
}
diff --git a/drivers/iio/light/max44000.c b/drivers/iio/light/max44000.c
index f17cb2ea18f5..6511b20a2a29 100644
--- a/drivers/iio/light/max44000.c
+++ b/drivers/iio/light/max44000.c
@@ -511,7 +511,8 @@ static irqreturn_t max44000_trigger_handler(int irq, void *p)
}
mutex_unlock(&data->lock);
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c
index b776c8ed4387..78c9b3a6453a 100644
--- a/drivers/iio/light/opt3001.c
+++ b/drivers/iio/light/opt3001.c
@@ -713,13 +713,13 @@ static irqreturn_t opt3001_irq(int irq, void *_iio)
IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(iio));
if (ret & OPT3001_CONFIGURATION_FL)
iio_push_event(iio,
IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(iio));
} else if (ret & OPT3001_CONFIGURATION_CRF) {
ret = i2c_smbus_read_word_swapped(opt->client, OPT3001_RESULT);
if (ret < 0) {
diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
index 9e847f8f4f0c..45cf8b0a4363 100644
--- a/drivers/iio/light/stk3310.c
+++ b/drivers/iio/light/stk3310.c
@@ -528,7 +528,7 @@ static irqreturn_t stk3310_irq_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
struct stk3310_data *data = iio_priv(indio_dev);
- data->timestamp = iio_get_time_ns();
+ data->timestamp = iio_get_time_ns(indio_dev);
return IRQ_WAKE_THREAD;
}
diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c
index 8a15fb541dc3..a795afb7667b 100644
--- a/drivers/iio/light/tcs3414.c
+++ b/drivers/iio/light/tcs3414.c
@@ -216,7 +216,7 @@ static irqreturn_t tcs3414_trigger_handler(int irq, void *p)
}
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c
index b29312f99077..3aa71e34ae28 100644
--- a/drivers/iio/light/tcs3472.c
+++ b/drivers/iio/light/tcs3472.c
@@ -202,7 +202,7 @@ static irqreturn_t tcs3472_trigger_handler(int irq, void *p)
}
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c
index 57b108c30e98..04598ae993d4 100644
--- a/drivers/iio/light/tsl2563.c
+++ b/drivers/iio/light/tsl2563.c
@@ -630,7 +630,7 @@ static irqreturn_t tsl2563_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_EITHER),
- iio_get_time_ns());
+ iio_get_time_ns(dev_info));
/* clear the interrupt and push the event */
i2c_smbus_write_byte(chip->client, TSL2563_CMD | TSL2563_CLEARINT);
diff --git a/drivers/iio/light/us5182d.c b/drivers/iio/light/us5182d.c
index 45bc2f742f46..20c40f780964 100644
--- a/drivers/iio/light/us5182d.c
+++ b/drivers/iio/light/us5182d.c
@@ -833,7 +833,7 @@ static irqreturn_t us5182d_irq_thread_handler(int irq, void *private)
dir = ret & US5182D_CFG0_PROX ? IIO_EV_DIR_RISING : IIO_EV_DIR_FALLING;
ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1, IIO_EV_TYPE_THRESH, dir);
- iio_push_event(indio_dev, ev, iio_get_time_ns());
+ iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG0,
ret & ~US5182D_CFG0_PX_IRQ);
diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c
index 57d3654d7caf..af8606cc7812 100644
--- a/drivers/iio/magnetometer/ak8975.c
+++ b/drivers/iio/magnetometer/ak8975.c
@@ -33,6 +33,7 @@
#include <linux/of_gpio.h>
#include <linux/acpi.h>
#include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
@@ -379,37 +380,40 @@ struct ak8975_data {
u8 cntl_cache;
struct iio_mount_matrix orientation;
struct regulator *vdd;
+ struct regulator *vid;
};
/* Enable attached power regulator if any. */
-static int ak8975_power_on(struct i2c_client *client)
+static int ak8975_power_on(const struct ak8975_data *data)
{
- const struct iio_dev *indio_dev = i2c_get_clientdata(client);
- struct ak8975_data *data = iio_priv(indio_dev);
int ret;
- data->vdd = devm_regulator_get(&client->dev, "vdd");
- if (IS_ERR_OR_NULL(data->vdd)) {
- ret = PTR_ERR(data->vdd);
- if (ret == -ENODEV)
- ret = 0;
- } else {
- ret = regulator_enable(data->vdd);
+ ret = regulator_enable(data->vdd);
+ if (ret) {
+ dev_warn(&data->client->dev,
+ "Failed to enable specified Vdd supply\n");
+ return ret;
}
-
- if (ret)
- dev_err(&client->dev, "failed to enable Vdd supply: %d\n", ret);
- return ret;
+ ret = regulator_enable(data->vid);
+ if (ret) {
+ dev_warn(&data->client->dev,
+ "Failed to enable specified Vid supply\n");
+ return ret;
+ }
+ /*
+ * According to the datasheet the power supply rise time i 200us
+ * and the minimum wait time before mode setting is 100us, in
+ * total 300 us. Add some margin and say minimum 500us here.
+ */
+ usleep_range(500, 1000);
+ return 0;
}
/* Disable attached power regulator if any. */
-static void ak8975_power_off(const struct i2c_client *client)
+static void ak8975_power_off(const struct ak8975_data *data)
{
- const struct iio_dev *indio_dev = i2c_get_clientdata(client);
- const struct ak8975_data *data = iio_priv(indio_dev);
-
- if (!IS_ERR_OR_NULL(data->vdd))
- regulator_disable(data->vdd);
+ regulator_disable(data->vid);
+ regulator_disable(data->vdd);
}
/*
@@ -689,6 +693,8 @@ static int ak8975_read_axis(struct iio_dev *indio_dev, int index, int *val)
u16 buff;
int ret;
+ pm_runtime_get_sync(&data->client->dev);
+
mutex_lock(&data->lock);
ret = ak8975_start_read_axis(data, client);
@@ -703,6 +709,9 @@ static int ak8975_read_axis(struct iio_dev *indio_dev, int index, int *val)
mutex_unlock(&data->lock);
+ pm_runtime_mark_last_busy(&data->client->dev);
+ pm_runtime_put_autosuspend(&data->client->dev);
+
/* Swap bytes and convert to valid range. */
buff = le16_to_cpu(buff);
*val = clamp_t(s16, buff, -def->range, def->range);
@@ -829,7 +838,8 @@ static void ak8975_fill_buffer(struct iio_dev *indio_dev)
buff[1] = clamp_t(s16, le16_to_cpu(buff[1]), -def->range, def->range);
buff[2] = clamp_t(s16, le16_to_cpu(buff[2]), -def->range, def->range);
- iio_push_to_buffers_with_timestamp(indio_dev, buff, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buff,
+ iio_get_time_ns(indio_dev));
return;
unlock:
@@ -923,7 +933,15 @@ static int ak8975_probe(struct i2c_client *client,
data->def = &ak_def_array[chipset];
- err = ak8975_power_on(client);
+ /* Fetch the regulators */
+ data->vdd = devm_regulator_get(&client->dev, "vdd");
+ if (IS_ERR(data->vdd))
+ return PTR_ERR(data->vdd);
+ data->vid = devm_regulator_get(&client->dev, "vid");
+ if (IS_ERR(data->vid))
+ return PTR_ERR(data->vid);
+
+ err = ak8975_power_on(data);
if (err)
return err;
@@ -963,26 +981,93 @@ static int ak8975_probe(struct i2c_client *client,
goto cleanup_buffer;
}
+ /* Enable runtime PM */
+ pm_runtime_get_noresume(&client->dev);
+ pm_runtime_set_active(&client->dev);
+ pm_runtime_enable(&client->dev);
+ /*
+ * The device comes online in 500us, so add two orders of magnitude
+ * of delay before autosuspending: 50 ms.
+ */
+ pm_runtime_set_autosuspend_delay(&client->dev, 50);
+ pm_runtime_use_autosuspend(&client->dev);
+ pm_runtime_put(&client->dev);
+
return 0;
cleanup_buffer:
iio_triggered_buffer_cleanup(indio_dev);
power_off:
- ak8975_power_off(client);
+ ak8975_power_off(data);
return err;
}
static int ak8975_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct ak8975_data *data = iio_priv(indio_dev);
+ pm_runtime_get_sync(&client->dev);
+ pm_runtime_put_noidle(&client->dev);
+ pm_runtime_disable(&client->dev);
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
- ak8975_power_off(client);
+ ak8975_set_mode(data, POWER_DOWN);
+ ak8975_power_off(data);
return 0;
}
+#ifdef CONFIG_PM
+static int ak8975_runtime_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct ak8975_data *data = iio_priv(indio_dev);
+ int ret;
+
+ /* Set the device in power down if it wasn't already */
+ ret = ak8975_set_mode(data, POWER_DOWN);
+ if (ret < 0) {
+ dev_err(&client->dev, "Error in setting power-down mode\n");
+ return ret;
+ }
+ /* Next cut the regulators */
+ ak8975_power_off(data);
+
+ return 0;
+}
+
+static int ak8975_runtime_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct ak8975_data *data = iio_priv(indio_dev);
+ int ret;
+
+ /* Take up the regulators */
+ ak8975_power_on(data);
+ /*
+ * We come up in powered down mode, the reading routines will
+ * put us in the mode to read values later.
+ */
+ ret = ak8975_set_mode(data, POWER_DOWN);
+ if (ret < 0) {
+ dev_err(&client->dev, "Error in setting power-down mode\n");
+ return ret;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_PM */
+
+static const struct dev_pm_ops ak8975_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(ak8975_runtime_suspend,
+ ak8975_runtime_resume, NULL)
+};
+
static const struct i2c_device_id ak8975_id[] = {
{"ak8975", AK8975},
{"ak8963", AK8963},
@@ -1010,6 +1095,7 @@ MODULE_DEVICE_TABLE(of, ak8975_of_match);
static struct i2c_driver ak8975_driver = {
.driver = {
.name = "ak8975",
+ .pm = &ak8975_dev_pm_ops,
.of_match_table = of_match_ptr(ak8975_of_match),
.acpi_match_table = ACPI_PTR(ak_acpi_match),
},
diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c
index 77882b466e0f..ba3e2a374ee5 100644
--- a/drivers/iio/magnetometer/hmc5843_core.c
+++ b/drivers/iio/magnetometer/hmc5843_core.c
@@ -451,7 +451,7 @@ static irqreturn_t hmc5843_trigger_handler(int irq, void *p)
goto done;
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c
index 261d517428e4..f2be4a049056 100644
--- a/drivers/iio/magnetometer/mag3110.c
+++ b/drivers/iio/magnetometer/mag3110.c
@@ -261,7 +261,7 @@ static irqreturn_t mag3110_trigger_handler(int irq, void *p)
}
iio_push_to_buffers_with_timestamp(indio_dev, buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig
index 0941c8d490a0..2e9da1cf3297 100644
--- a/drivers/iio/potentiometer/Kconfig
+++ b/drivers/iio/potentiometer/Kconfig
@@ -10,7 +10,7 @@ config DS1803
depends on I2C
help
Say yes here to build support for the Maxim Integrated DS1803
- digital potentiomenter chip.
+ digital potentiometer chip.
To compile this driver as a module, choose M here: the
module will be called ds1803.
@@ -39,7 +39,7 @@ config MCP4131
MCP4241, MCP4242,
MCP4251, MCP4252,
MCP4261, MCP4262,
- digital potentiomenter chips.
+ digital potentiometer chips.
To compile this driver as a module, choose M here: the
module will be called mcp4131.
@@ -49,9 +49,11 @@ config MCP4531
depends on I2C
help
Say yes here to build support for the Microchip
- MCP4531, MCP4532, MCP4551, MCP4552,
- MCP4631, MCP4632, MCP4651, MCP4652
- digital potentiomenter chips.
+ MCP4531, MCP4532, MCP4541, MCP4542,
+ MCP4551, MCP4552, MCP4561, MCP4562,
+ MCP4631, MCP4632, MCP4641, MCP4642,
+ MCP4651, MCP4652, MCP4661, MCP4662
+ digital potentiometer chips.
To compile this driver as a module, choose M here: the
module will be called mcp4531.
diff --git a/drivers/iio/potentiometer/mcp4531.c b/drivers/iio/potentiometer/mcp4531.c
index 3b72e1a595db..13b6ae2fcf7b 100644
--- a/drivers/iio/potentiometer/mcp4531.c
+++ b/drivers/iio/potentiometer/mcp4531.c
@@ -8,12 +8,20 @@
* DEVID #Wipers #Positions Resistor Opts (kOhm) i2c address
* mcp4531 1 129 5, 10, 50, 100 010111x
* mcp4532 1 129 5, 10, 50, 100 01011xx
+ * mcp4541 1 129 5, 10, 50, 100 010111x
+ * mcp4542 1 129 5, 10, 50, 100 01011xx
* mcp4551 1 257 5, 10, 50, 100 010111x
* mcp4552 1 257 5, 10, 50, 100 01011xx
+ * mcp4561 1 257 5, 10, 50, 100 010111x
+ * mcp4562 1 257 5, 10, 50, 100 01011xx
* mcp4631 2 129 5, 10, 50, 100 0101xxx
* mcp4632 2 129 5, 10, 50, 100 01011xx
+ * mcp4641 2 129 5, 10, 50, 100 0101xxx
+ * mcp4642 2 129 5, 10, 50, 100 01011xx
* mcp4651 2 257 5, 10, 50, 100 0101xxx
* mcp4652 2 257 5, 10, 50, 100 01011xx
+ * mcp4661 2 257 5, 10, 50, 100 0101xxx
+ * mcp4662 2 257 5, 10, 50, 100 01011xx
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
@@ -23,6 +31,8 @@
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/iio/iio.h>
@@ -37,18 +47,34 @@ enum mcp4531_type {
MCP453x_103,
MCP453x_503,
MCP453x_104,
+ MCP454x_502,
+ MCP454x_103,
+ MCP454x_503,
+ MCP454x_104,
MCP455x_502,
MCP455x_103,
MCP455x_503,
MCP455x_104,
+ MCP456x_502,
+ MCP456x_103,
+ MCP456x_503,
+ MCP456x_104,
MCP463x_502,
MCP463x_103,
MCP463x_503,
MCP463x_104,
+ MCP464x_502,
+ MCP464x_103,
+ MCP464x_503,
+ MCP464x_104,
MCP465x_502,
MCP465x_103,
MCP465x_503,
MCP465x_104,
+ MCP466x_502,
+ MCP466x_103,
+ MCP466x_503,
+ MCP466x_104,
};
static const struct mcp4531_cfg mcp4531_cfg[] = {
@@ -56,18 +82,34 @@ static const struct mcp4531_cfg mcp4531_cfg[] = {
[MCP453x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, },
[MCP453x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, },
[MCP453x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, },
+ [MCP454x_502] = { .wipers = 1, .max_pos = 128, .kohms = 5, },
+ [MCP454x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, },
+ [MCP454x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, },
+ [MCP454x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, },
[MCP455x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, },
[MCP455x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, },
[MCP455x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, },
[MCP455x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, },
+ [MCP456x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, },
+ [MCP456x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, },
+ [MCP456x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, },
+ [MCP456x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, },
[MCP463x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, },
[MCP463x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, },
[MCP463x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, },
[MCP463x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, },
+ [MCP464x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, },
+ [MCP464x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, },
+ [MCP464x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, },
+ [MCP464x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, },
[MCP465x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, },
[MCP465x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, },
[MCP465x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, },
[MCP465x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, },
+ [MCP466x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, },
+ [MCP466x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, },
+ [MCP466x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, },
+ [MCP466x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, },
};
#define MCP4531_WRITE (0 << 2)
@@ -148,12 +190,89 @@ static const struct iio_info mcp4531_info = {
.driver_module = THIS_MODULE,
};
+#ifdef CONFIG_OF
+
+#define MCP4531_COMPATIBLE(of_compatible, cfg) { \
+ .compatible = of_compatible, \
+ .data = &mcp4531_cfg[cfg], \
+}
+
+static const struct of_device_id mcp4531_of_match[] = {
+ MCP4531_COMPATIBLE("microchip,mcp4531-502", MCP453x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4531-103", MCP453x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4531-503", MCP453x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4531-104", MCP453x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4532-502", MCP453x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4532-103", MCP453x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4532-503", MCP453x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4532-104", MCP453x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4541-502", MCP454x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4541-103", MCP454x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4541-503", MCP454x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4541-104", MCP454x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4542-502", MCP454x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4542-103", MCP454x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4542-503", MCP454x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4542-104", MCP454x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4551-502", MCP455x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4551-103", MCP455x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4551-503", MCP455x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4551-104", MCP455x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4552-502", MCP455x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4552-103", MCP455x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4552-503", MCP455x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4552-104", MCP455x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4561-502", MCP456x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4561-103", MCP456x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4561-503", MCP456x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4561-104", MCP456x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4562-502", MCP456x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4562-103", MCP456x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4562-503", MCP456x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4562-104", MCP456x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4631-502", MCP463x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4631-103", MCP463x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4631-503", MCP463x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4631-104", MCP463x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4632-502", MCP463x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4632-103", MCP463x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4632-503", MCP463x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4632-104", MCP463x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4641-502", MCP464x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4641-103", MCP464x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4641-503", MCP464x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4641-104", MCP464x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4642-502", MCP464x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4642-103", MCP464x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4642-503", MCP464x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4642-104", MCP464x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4651-502", MCP465x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4651-103", MCP465x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4651-503", MCP465x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4651-104", MCP465x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4652-502", MCP465x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4652-103", MCP465x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4652-503", MCP465x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4652-104", MCP465x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4661-502", MCP466x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4661-103", MCP466x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4661-503", MCP466x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4661-104", MCP466x_104),
+ MCP4531_COMPATIBLE("microchip,mcp4662-502", MCP466x_502),
+ MCP4531_COMPATIBLE("microchip,mcp4662-103", MCP466x_103),
+ MCP4531_COMPATIBLE("microchip,mcp4662-503", MCP466x_503),
+ MCP4531_COMPATIBLE("microchip,mcp4662-104", MCP466x_104),
+ { /* sentinel */ }
+};
+#endif
+
static int mcp4531_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct mcp4531_data *data;
struct iio_dev *indio_dev;
+ const struct of_device_id *match;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_WORD_DATA)) {
@@ -167,7 +286,12 @@ static int mcp4531_probe(struct i2c_client *client,
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
- data->cfg = &mcp4531_cfg[id->driver_data];
+
+ match = of_match_device(of_match_ptr(mcp4531_of_match), dev);
+ if (match)
+ data->cfg = of_device_get_match_data(dev);
+ else
+ data->cfg = &mcp4531_cfg[id->driver_data];
indio_dev->dev.parent = dev;
indio_dev->info = &mcp4531_info;
@@ -187,6 +311,14 @@ static const struct i2c_device_id mcp4531_id[] = {
{ "mcp4532-103", MCP453x_103 },
{ "mcp4532-503", MCP453x_503 },
{ "mcp4532-104", MCP453x_104 },
+ { "mcp4541-502", MCP454x_502 },
+ { "mcp4541-103", MCP454x_103 },
+ { "mcp4541-503", MCP454x_503 },
+ { "mcp4541-104", MCP454x_104 },
+ { "mcp4542-502", MCP454x_502 },
+ { "mcp4542-103", MCP454x_103 },
+ { "mcp4542-503", MCP454x_503 },
+ { "mcp4542-104", MCP454x_104 },
{ "mcp4551-502", MCP455x_502 },
{ "mcp4551-103", MCP455x_103 },
{ "mcp4551-503", MCP455x_503 },
@@ -195,6 +327,14 @@ static const struct i2c_device_id mcp4531_id[] = {
{ "mcp4552-103", MCP455x_103 },
{ "mcp4552-503", MCP455x_503 },
{ "mcp4552-104", MCP455x_104 },
+ { "mcp4561-502", MCP456x_502 },
+ { "mcp4561-103", MCP456x_103 },
+ { "mcp4561-503", MCP456x_503 },
+ { "mcp4561-104", MCP456x_104 },
+ { "mcp4562-502", MCP456x_502 },
+ { "mcp4562-103", MCP456x_103 },
+ { "mcp4562-503", MCP456x_503 },
+ { "mcp4562-104", MCP456x_104 },
{ "mcp4631-502", MCP463x_502 },
{ "mcp4631-103", MCP463x_103 },
{ "mcp4631-503", MCP463x_503 },
@@ -203,6 +343,14 @@ static const struct i2c_device_id mcp4531_id[] = {
{ "mcp4632-103", MCP463x_103 },
{ "mcp4632-503", MCP463x_503 },
{ "mcp4632-104", MCP463x_104 },
+ { "mcp4641-502", MCP464x_502 },
+ { "mcp4641-103", MCP464x_103 },
+ { "mcp4641-503", MCP464x_503 },
+ { "mcp4641-104", MCP464x_104 },
+ { "mcp4642-502", MCP464x_502 },
+ { "mcp4642-103", MCP464x_103 },
+ { "mcp4642-503", MCP464x_503 },
+ { "mcp4642-104", MCP464x_104 },
{ "mcp4651-502", MCP465x_502 },
{ "mcp4651-103", MCP465x_103 },
{ "mcp4651-503", MCP465x_503 },
@@ -211,6 +359,14 @@ static const struct i2c_device_id mcp4531_id[] = {
{ "mcp4652-103", MCP465x_103 },
{ "mcp4652-503", MCP465x_503 },
{ "mcp4652-104", MCP465x_104 },
+ { "mcp4661-502", MCP466x_502 },
+ { "mcp4661-103", MCP466x_103 },
+ { "mcp4661-503", MCP466x_503 },
+ { "mcp4661-104", MCP466x_104 },
+ { "mcp4662-502", MCP466x_502 },
+ { "mcp4662-103", MCP466x_103 },
+ { "mcp4662-503", MCP466x_503 },
+ { "mcp4662-104", MCP466x_104 },
{}
};
MODULE_DEVICE_TABLE(i2c, mcp4531_id);
@@ -218,6 +374,7 @@ MODULE_DEVICE_TABLE(i2c, mcp4531_id);
static struct i2c_driver mcp4531_driver = {
.driver = {
.name = "mcp4531",
+ .of_match_table = of_match_ptr(mcp4531_of_match),
},
.probe = mcp4531_probe,
.id_table = mcp4531_id,
diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
index 8d654f671b6b..d130cdc78f43 100644
--- a/drivers/iio/pressure/Kconfig
+++ b/drivers/iio/pressure/Kconfig
@@ -6,17 +6,33 @@
menu "Pressure sensors"
config BMP280
- tristate "Bosch Sensortec BMP180 and BMP280 pressure sensor driver"
- depends on I2C
+ tristate "Bosch Sensortec BMP180/BMP280 pressure sensor I2C driver"
+ depends on (I2C || SPI_MASTER)
depends on !(BMP085_I2C=y || BMP085_I2C=m)
- select REGMAP_I2C
+ depends on !(BMP085_SPI=y || BMP085_SPI=m)
+ select REGMAP
+ select BMP280_I2C if (I2C)
+ select BMP280_SPI if (SPI_MASTER)
help
Say yes here to build support for Bosch Sensortec BMP180 and BMP280
pressure and temperature sensors. Also supports the BE280 with
- an additional humidty sensor channel.
+ an additional humidity sensor channel.
- To compile this driver as a module, choose M here: the module
- will be called bmp280.
+ To compile this driver as a module, choose M here: the core module
+ will be called bmp280 and you will also get bmp280-i2c for I2C
+ and/or bmp280-spi for SPI support.
+
+config BMP280_I2C
+ tristate
+ depends on BMP280
+ depends on I2C
+ select REGMAP_I2C
+
+config BMP280_SPI
+ tristate
+ depends on BMP280
+ depends on SPI_MASTER
+ select REGMAP
config HID_SENSOR_PRESS
depends on HID_SENSOR_HUB
diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile
index 17d6e7afa1ff..7f395bed5e88 100644
--- a/drivers/iio/pressure/Makefile
+++ b/drivers/iio/pressure/Makefile
@@ -4,6 +4,9 @@
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_BMP280) += bmp280.o
+bmp280-objs := bmp280-core.o bmp280-regmap.o
+obj-$(CONFIG_BMP280_I2C) += bmp280-i2c.o
+obj-$(CONFIG_BMP280_SPI) += bmp280-spi.o
obj-$(CONFIG_HID_SENSOR_PRESS) += hid-sensor-press.o
obj-$(CONFIG_HP03) += hp03.o
obj-$(CONFIG_MPL115) += mpl115.o
diff --git a/drivers/iio/pressure/bmp280.c b/drivers/iio/pressure/bmp280-core.c
similarity index 73%
rename from drivers/iio/pressure/bmp280.c
rename to drivers/iio/pressure/bmp280-core.c
index dbbcd6d83e3b..6943688e66df 100644
--- a/drivers/iio/pressure/bmp280.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -1,5 +1,9 @@
/*
+ * Copyright (c) 2010 Christoph Mair <christoph.mair@gmail.com>
+ * Copyright (c) 2012 Bosch Sensortec GmbH
+ * Copyright (c) 2012 Unixphere AB
* Copyright (c) 2014 Intel Corporation
+ * Copyright (c) 2016 Linus Walleij <linus.walleij@linaro.org>
*
* Driver for Bosch Sensortec BMP180 and BMP280 digital pressure sensor.
*
@@ -15,113 +19,53 @@
#define pr_fmt(fmt) "bmp280: " fmt
+#include <linux/device.h>
#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/acpi.h>
#include <linux/regmap.h>
#include <linux/delay.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h> /* For irq_get_irq_data() */
+#include <linux/completion.h>
+#include <linux/pm_runtime.h>
+#include <linux/random.h>
-/* BMP280 specific registers */
-#define BMP280_REG_HUMIDITY_LSB 0xFE
-#define BMP280_REG_HUMIDITY_MSB 0xFD
-#define BMP280_REG_TEMP_XLSB 0xFC
-#define BMP280_REG_TEMP_LSB 0xFB
-#define BMP280_REG_TEMP_MSB 0xFA
-#define BMP280_REG_PRESS_XLSB 0xF9
-#define BMP280_REG_PRESS_LSB 0xF8
-#define BMP280_REG_PRESS_MSB 0xF7
+#include "bmp280.h"
-#define BMP280_REG_CONFIG 0xF5
-#define BMP280_REG_CTRL_MEAS 0xF4
-#define BMP280_REG_STATUS 0xF3
-#define BMP280_REG_CTRL_HUMIDITY 0xF2
+/*
+ * These enums are used for indexing into the array of calibration
+ * coefficients for BMP180.
+ */
+enum { AC1, AC2, AC3, AC4, AC5, AC6, B1, B2, MB, MC, MD };
-/* Due to non linear mapping, and data sizes we can't do a bulk read */
-#define BMP280_REG_COMP_H1 0xA1
-#define BMP280_REG_COMP_H2 0xE1
-#define BMP280_REG_COMP_H3 0xE3
-#define BMP280_REG_COMP_H4 0xE4
-#define BMP280_REG_COMP_H5 0xE5
-#define BMP280_REG_COMP_H6 0xE7
-
-#define BMP280_REG_COMP_TEMP_START 0x88
-#define BMP280_COMP_TEMP_REG_COUNT 6
-
-#define BMP280_REG_COMP_PRESS_START 0x8E
-#define BMP280_COMP_PRESS_REG_COUNT 18
-
-#define BMP280_FILTER_MASK (BIT(4) | BIT(3) | BIT(2))
-#define BMP280_FILTER_OFF 0
-#define BMP280_FILTER_2X BIT(2)
-#define BMP280_FILTER_4X BIT(3)
-#define BMP280_FILTER_8X (BIT(3) | BIT(2))
-#define BMP280_FILTER_16X BIT(4)
-
-#define BMP280_OSRS_HUMIDITY_MASK (BIT(2) | BIT(1) | BIT(0))
-#define BMP280_OSRS_HUMIDITIY_X(osrs_h) ((osrs_h) << 0)
-#define BMP280_OSRS_HUMIDITY_SKIP 0
-#define BMP280_OSRS_HUMIDITY_1X BMP280_OSRS_HUMIDITIY_X(1)
-#define BMP280_OSRS_HUMIDITY_2X BMP280_OSRS_HUMIDITIY_X(2)
-#define BMP280_OSRS_HUMIDITY_4X BMP280_OSRS_HUMIDITIY_X(3)
-#define BMP280_OSRS_HUMIDITY_8X BMP280_OSRS_HUMIDITIY_X(4)
-#define BMP280_OSRS_HUMIDITY_16X BMP280_OSRS_HUMIDITIY_X(5)
-
-#define BMP280_OSRS_TEMP_MASK (BIT(7) | BIT(6) | BIT(5))
-#define BMP280_OSRS_TEMP_SKIP 0
-#define BMP280_OSRS_TEMP_X(osrs_t) ((osrs_t) << 5)
-#define BMP280_OSRS_TEMP_1X BMP280_OSRS_TEMP_X(1)
-#define BMP280_OSRS_TEMP_2X BMP280_OSRS_TEMP_X(2)
-#define BMP280_OSRS_TEMP_4X BMP280_OSRS_TEMP_X(3)
-#define BMP280_OSRS_TEMP_8X BMP280_OSRS_TEMP_X(4)
-#define BMP280_OSRS_TEMP_16X BMP280_OSRS_TEMP_X(5)
-
-#define BMP280_OSRS_PRESS_MASK (BIT(4) | BIT(3) | BIT(2))
-#define BMP280_OSRS_PRESS_SKIP 0
-#define BMP280_OSRS_PRESS_X(osrs_p) ((osrs_p) << 2)
-#define BMP280_OSRS_PRESS_1X BMP280_OSRS_PRESS_X(1)
-#define BMP280_OSRS_PRESS_2X BMP280_OSRS_PRESS_X(2)
-#define BMP280_OSRS_PRESS_4X BMP280_OSRS_PRESS_X(3)
-#define BMP280_OSRS_PRESS_8X BMP280_OSRS_PRESS_X(4)
-#define BMP280_OSRS_PRESS_16X BMP280_OSRS_PRESS_X(5)
-
-#define BMP280_MODE_MASK (BIT(1) | BIT(0))
-#define BMP280_MODE_SLEEP 0
-#define BMP280_MODE_FORCED BIT(0)
-#define BMP280_MODE_NORMAL (BIT(1) | BIT(0))
-
-/* BMP180 specific registers */
-#define BMP180_REG_OUT_XLSB 0xF8
-#define BMP180_REG_OUT_LSB 0xF7
-#define BMP180_REG_OUT_MSB 0xF6
-
-#define BMP180_REG_CALIB_START 0xAA
-#define BMP180_REG_CALIB_COUNT 22
-
-#define BMP180_MEAS_SCO BIT(5)
-#define BMP180_MEAS_TEMP (0x0E | BMP180_MEAS_SCO)
-#define BMP180_MEAS_PRESS_X(oss) ((oss) << 6 | 0x14 | BMP180_MEAS_SCO)
-#define BMP180_MEAS_PRESS_1X BMP180_MEAS_PRESS_X(0)
-#define BMP180_MEAS_PRESS_2X BMP180_MEAS_PRESS_X(1)
-#define BMP180_MEAS_PRESS_4X BMP180_MEAS_PRESS_X(2)
-#define BMP180_MEAS_PRESS_8X BMP180_MEAS_PRESS_X(3)
-
-/* BMP180 and BMP280 common registers */
-#define BMP280_REG_CTRL_MEAS 0xF4
-#define BMP280_REG_RESET 0xE0
-#define BMP280_REG_ID 0xD0
-
-#define BMP180_CHIP_ID 0x55
-#define BMP280_CHIP_ID 0x58
-#define BME280_CHIP_ID 0x60
-#define BMP280_SOFT_RESET_VAL 0xB6
+struct bmp180_calib {
+ s16 AC1;
+ s16 AC2;
+ s16 AC3;
+ u16 AC4;
+ u16 AC5;
+ u16 AC6;
+ s16 B1;
+ s16 B2;
+ s16 MB;
+ s16 MC;
+ s16 MD;
+};
struct bmp280_data {
- struct i2c_client *client;
+ struct device *dev;
struct mutex lock;
struct regmap *regmap;
+ struct completion done;
+ bool use_eoc;
const struct bmp280_chip_info *chip_info;
+ struct bmp180_calib calib;
+ struct regulator *vddd;
+ struct regulator *vdda;
+ unsigned int start_up_time; /* in milliseconds */
/* log of base 2 of oversampling rate */
u8 oversampling_press;
@@ -136,8 +80,6 @@ struct bmp280_data {
};
struct bmp280_chip_info {
- const struct regmap_config *regmap_config;
-
const int *oversampling_temp_avail;
int num_oversampling_temp_avail;
@@ -178,48 +120,6 @@ static const struct iio_chan_spec bmp280_channels[] = {
},
};
-static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
-{
- switch (reg) {
- case BMP280_REG_CONFIG:
- case BMP280_REG_CTRL_HUMIDITY:
- case BMP280_REG_CTRL_MEAS:
- case BMP280_REG_RESET:
- return true;
- default:
- return false;
- };
-}
-
-static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
-{
- switch (reg) {
- case BMP280_REG_HUMIDITY_LSB:
- case BMP280_REG_HUMIDITY_MSB:
- case BMP280_REG_TEMP_XLSB:
- case BMP280_REG_TEMP_LSB:
- case BMP280_REG_TEMP_MSB:
- case BMP280_REG_PRESS_XLSB:
- case BMP280_REG_PRESS_LSB:
- case BMP280_REG_PRESS_MSB:
- case BMP280_REG_STATUS:
- return true;
- default:
- return false;
- }
-}
-
-static const struct regmap_config bmp280_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-
- .max_register = BMP280_REG_HUMIDITY_LSB,
- .cache_type = REGCACHE_RBTREE,
-
- .writeable_reg = bmp280_is_writeable_reg,
- .volatile_reg = bmp280_is_volatile_reg,
-};
-
/*
* Returns humidity in percent, resolution is 0.01 percent. Output value of
* "47445" represents 47445/1024 = 46.333 %RH.
@@ -230,7 +130,7 @@ static const struct regmap_config bmp280_regmap_config = {
static u32 bmp280_compensate_humidity(struct bmp280_data *data,
s32 adc_humidity)
{
- struct device *dev = &data->client->dev;
+ struct device *dev = data->dev;
unsigned int H1, H3, tmp;
int H2, H4, H5, H6, ret, var;
@@ -301,7 +201,7 @@ static s32 bmp280_compensate_temp(struct bmp280_data *data,
ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_TEMP_START,
buf, BMP280_COMP_TEMP_REG_COUNT);
if (ret < 0) {
- dev_err(&data->client->dev,
+ dev_err(data->dev,
"failed to read temperature calibration parameters\n");
return ret;
}
@@ -341,7 +241,7 @@ static u32 bmp280_compensate_press(struct bmp280_data *data,
ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_PRESS_START,
buf, BMP280_COMP_PRESS_REG_COUNT);
if (ret < 0) {
- dev_err(&data->client->dev,
+ dev_err(data->dev,
"failed to read pressure calibration parameters\n");
return ret;
}
@@ -376,7 +276,7 @@ static int bmp280_read_temp(struct bmp280_data *data,
ret = regmap_bulk_read(data->regmap, BMP280_REG_TEMP_MSB,
(u8 *) &tmp, 3);
if (ret < 0) {
- dev_err(&data->client->dev, "failed to read temperature\n");
+ dev_err(data->dev, "failed to read temperature\n");
return ret;
}
@@ -411,7 +311,7 @@ static int bmp280_read_press(struct bmp280_data *data,
ret = regmap_bulk_read(data->regmap, BMP280_REG_PRESS_MSB,
(u8 *) &tmp, 3);
if (ret < 0) {
- dev_err(&data->client->dev, "failed to read pressure\n");
+ dev_err(data->dev, "failed to read pressure\n");
return ret;
}
@@ -439,7 +339,7 @@ static int bmp280_read_humid(struct bmp280_data *data, int *val, int *val2)
ret = regmap_bulk_read(data->regmap, BMP280_REG_HUMIDITY_MSB,
(u8 *) &tmp, 2);
if (ret < 0) {
- dev_err(&data->client->dev, "failed to read humidity\n");
+ dev_err(data->dev, "failed to read humidity\n");
return ret;
}
@@ -459,6 +359,7 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
int ret;
struct bmp280_data *data = iio_priv(indio_dev);
+ pm_runtime_get_sync(data->dev);
mutex_lock(&data->lock);
switch (mask) {
@@ -503,6 +404,8 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
}
mutex_unlock(&data->lock);
+ pm_runtime_mark_last_busy(data->dev);
+ pm_runtime_put_autosuspend(data->dev);
return ret;
}
@@ -567,6 +470,7 @@ static int bmp280_write_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+ pm_runtime_get_sync(data->dev);
mutex_lock(&data->lock);
switch (chan->type) {
case IIO_HUMIDITYRELATIVE:
@@ -583,6 +487,8 @@ static int bmp280_write_raw(struct iio_dev *indio_dev,
break;
}
mutex_unlock(&data->lock);
+ pm_runtime_mark_last_busy(data->dev);
+ pm_runtime_put_autosuspend(data->dev);
break;
default:
return -EINVAL;
@@ -657,7 +563,7 @@ static int bmp280_chip_config(struct bmp280_data *data)
BMP280_MODE_MASK,
osrs | BMP280_MODE_NORMAL);
if (ret < 0) {
- dev_err(&data->client->dev,
+ dev_err(data->dev,
"failed to write ctrl_meas register\n");
return ret;
}
@@ -666,7 +572,7 @@ static int bmp280_chip_config(struct bmp280_data *data)
BMP280_FILTER_MASK,
BMP280_FILTER_4X);
if (ret < 0) {
- dev_err(&data->client->dev,
+ dev_err(data->dev,
"failed to write config register\n");
return ret;
}
@@ -677,8 +583,6 @@ static int bmp280_chip_config(struct bmp280_data *data)
static const int bmp280_oversampling_avail[] = { 1, 2, 4, 8, 16 };
static const struct bmp280_chip_info bmp280_chip_info = {
- .regmap_config = &bmp280_regmap_config,
-
.oversampling_temp_avail = bmp280_oversampling_avail,
.num_oversampling_temp_avail = ARRAY_SIZE(bmp280_oversampling_avail),
@@ -703,8 +607,6 @@ static int bme280_chip_config(struct bmp280_data *data)
}
static const struct bmp280_chip_info bme280_chip_info = {
- .regmap_config = &bmp280_regmap_config,
-
.oversampling_temp_avail = bmp280_oversampling_avail,
.num_oversampling_temp_avail = ARRAY_SIZE(bmp280_oversampling_avail),
@@ -720,42 +622,6 @@ static const struct bmp280_chip_info bme280_chip_info = {
.read_humid = bmp280_read_humid,
};
-
-static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg)
-{
- switch (reg) {
- case BMP280_REG_CTRL_MEAS:
- case BMP280_REG_RESET:
- return true;
- default:
- return false;
- };
-}
-
-static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg)
-{
- switch (reg) {
- case BMP180_REG_OUT_XLSB:
- case BMP180_REG_OUT_LSB:
- case BMP180_REG_OUT_MSB:
- case BMP280_REG_CTRL_MEAS:
- return true;
- default:
- return false;
- }
-}
-
-static const struct regmap_config bmp180_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-
- .max_register = BMP180_REG_OUT_XLSB,
- .cache_type = REGCACHE_RBTREE,
-
- .writeable_reg = bmp180_is_writeable_reg,
- .volatile_reg = bmp180_is_volatile_reg,
-};
-
static int bmp180_measure(struct bmp280_data *data, u8 ctrl_meas)
{
int ret;
@@ -763,16 +629,32 @@ static int bmp180_measure(struct bmp280_data *data, u8 ctrl_meas)
unsigned int delay_us;
unsigned int ctrl;
+ if (data->use_eoc)
+ init_completion(&data->done);
+
ret = regmap_write(data->regmap, BMP280_REG_CTRL_MEAS, ctrl_meas);
if (ret)
return ret;
- if (ctrl_meas == BMP180_MEAS_TEMP)
- delay_us = 4500;
- else
- delay_us = conversion_time_max[data->oversampling_press];
+ if (data->use_eoc) {
+ /*
+ * If we have a completion interrupt, use it, wait up to
+ * 100ms. The longest conversion time listed is 76.5 ms for
+ * advanced resolution mode.
+ */
+ ret = wait_for_completion_timeout(&data->done,
+ 1 + msecs_to_jiffies(100));
+ if (!ret)
+ dev_err(data->dev, "timeout waiting for completion\n");
+ } else {
+ if (ctrl_meas == BMP180_MEAS_TEMP)
+ delay_us = 4500;
+ else
+ delay_us =
+ conversion_time_max[data->oversampling_press];
- usleep_range(delay_us, delay_us + 1000);
+ usleep_range(delay_us, delay_us + 1000);
+ }
ret = regmap_read(data->regmap, BMP280_REG_CTRL_MEAS, &ctrl);
if (ret)
@@ -803,26 +685,6 @@ static int bmp180_read_adc_temp(struct bmp280_data *data, int *val)
return 0;
}
-/*
- * These enums are used for indexing into the array of calibration
- * coefficients for BMP180.
- */
-enum { AC1, AC2, AC3, AC4, AC5, AC6, B1, B2, MB, MC, MD };
-
-struct bmp180_calib {
- s16 AC1;
- s16 AC2;
- s16 AC3;
- u16 AC4;
- u16 AC5;
- u16 AC6;
- s16 B1;
- s16 B2;
- s16 MB;
- s16 MC;
- s16 MD;
-};
-
static int bmp180_read_calib(struct bmp280_data *data,
struct bmp180_calib *calib)
{
@@ -842,6 +704,9 @@ static int bmp180_read_calib(struct bmp280_data *data,
return -EIO;
}
+ /* Toss the calibration data into the entropy pool */
+ add_device_randomness(buf, sizeof(buf));
+
calib->AC1 = be16_to_cpu(buf[AC1]);
calib->AC2 = be16_to_cpu(buf[AC2]);
calib->AC3 = be16_to_cpu(buf[AC3]);
@@ -865,19 +730,11 @@ static int bmp180_read_calib(struct bmp280_data *data,
*/
static s32 bmp180_compensate_temp(struct bmp280_data *data, s32 adc_temp)
{
- int ret;
s32 x1, x2;
- struct bmp180_calib calib;
+ struct bmp180_calib *calib = &data->calib;
- ret = bmp180_read_calib(data, &calib);
- if (ret < 0) {
- dev_err(&data->client->dev,
- "failed to read calibration coefficients\n");
- return ret;
- }
-
- x1 = ((adc_temp - calib.AC6) * calib.AC5) >> 15;
- x2 = (calib.MC << 11) / (x1 + calib.MD);
+ x1 = ((adc_temp - calib->AC6) * calib->AC5) >> 15;
+ x2 = (calib->MC << 11) / (x1 + calib->MD);
data->t_fine = x1 + x2;
return (data->t_fine + 8) >> 4;
@@ -932,29 +789,21 @@ static int bmp180_read_adc_press(struct bmp280_data *data, int *val)
*/
static u32 bmp180_compensate_press(struct bmp280_data *data, s32 adc_press)
{
- int ret;
s32 x1, x2, x3, p;
s32 b3, b6;
u32 b4, b7;
s32 oss = data->oversampling_press;
- struct bmp180_calib calib;
-
- ret = bmp180_read_calib(data, &calib);
- if (ret < 0) {
- dev_err(&data->client->dev,
- "failed to read calibration coefficients\n");
- return ret;
- }
+ struct bmp180_calib *calib = &data->calib;
b6 = data->t_fine - 4000;
- x1 = (calib.B2 * (b6 * b6 >> 12)) >> 11;
- x2 = calib.AC2 * b6 >> 11;
+ x1 = (calib->B2 * (b6 * b6 >> 12)) >> 11;
+ x2 = calib->AC2 * b6 >> 11;
x3 = x1 + x2;
- b3 = ((((s32)calib.AC1 * 4 + x3) << oss) + 2) / 4;
- x1 = calib.AC3 * b6 >> 13;
- x2 = (calib.B1 * ((b6 * b6) >> 12)) >> 16;
+ b3 = ((((s32)calib->AC1 * 4 + x3) << oss) + 2) / 4;
+ x1 = calib->AC3 * b6 >> 13;
+ x2 = (calib->B1 * ((b6 * b6) >> 12)) >> 16;
x3 = (x1 + x2 + 2) >> 2;
- b4 = calib.AC4 * (u32)(x3 + 32768) >> 15;
+ b4 = calib->AC4 * (u32)(x3 + 32768) >> 15;
b7 = ((u32)adc_press - b3) * (50000 >> oss);
if (b7 < 0x80000000)
p = (b7 * 2) / b4;
@@ -1001,8 +850,6 @@ static const int bmp180_oversampling_temp_avail[] = { 1 };
static const int bmp180_oversampling_press_avail[] = { 1, 2, 4, 8 };
static const struct bmp280_chip_info bmp180_chip_info = {
- .regmap_config = &bmp180_regmap_config,
-
.oversampling_temp_avail = bmp180_oversampling_temp_avail,
.num_oversampling_temp_avail =
ARRAY_SIZE(bmp180_oversampling_temp_avail),
@@ -1016,40 +863,86 @@ static const struct bmp280_chip_info bmp180_chip_info = {
.read_press = bmp180_read_press,
};
-static int bmp280_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static irqreturn_t bmp085_eoc_irq(int irq, void *d)
+{
+ struct bmp280_data *data = d;
+
+ complete(&data->done);
+
+ return IRQ_HANDLED;
+}
+
+static int bmp085_fetch_eoc_irq(struct device *dev,
+ const char *name,
+ int irq,
+ struct bmp280_data *data)
+{
+ unsigned long irq_trig;
+ int ret;
+
+ irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq));
+ if (irq_trig != IRQF_TRIGGER_RISING) {
+ dev_err(dev, "non-rising trigger given for EOC interrupt, "
+ "trying to enforce it\n");
+ irq_trig = IRQF_TRIGGER_RISING;
+ }
+ ret = devm_request_threaded_irq(dev,
+ irq,
+ bmp085_eoc_irq,
+ NULL,
+ irq_trig,
+ name,
+ data);
+ if (ret) {
+ /* Bail out without IRQ but keep the driver in place */
+ dev_err(dev, "unable to request DRDY IRQ\n");
+ return 0;
+ }
+
+ data->use_eoc = true;
+ return 0;
+}
+
+int bmp280_common_probe(struct device *dev,
+ struct regmap *regmap,
+ unsigned int chip,
+ const char *name,
+ int irq)
{
int ret;
struct iio_dev *indio_dev;
struct bmp280_data *data;
unsigned int chip_id;
+ struct gpio_desc *gpiod;
- indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
mutex_init(&data->lock);
- data->client = client;
+ data->dev = dev;
- indio_dev->dev.parent = &client->dev;
- indio_dev->name = id->name;
+ indio_dev->dev.parent = dev;
+ indio_dev->name = name;
indio_dev->channels = bmp280_channels;
indio_dev->info = &bmp280_info;
indio_dev->modes = INDIO_DIRECT_MODE;
- switch (id->driver_data) {
+ switch (chip) {
case BMP180_CHIP_ID:
indio_dev->num_channels = 2;
data->chip_info = &bmp180_chip_info;
data->oversampling_press = ilog2(8);
data->oversampling_temp = ilog2(1);
+ data->start_up_time = 10;
break;
case BMP280_CHIP_ID:
indio_dev->num_channels = 2;
data->chip_info = &bmp280_chip_info;
data->oversampling_press = ilog2(16);
data->oversampling_temp = ilog2(2);
+ data->start_up_time = 2;
break;
case BME280_CHIP_ID:
indio_dev->num_channels = 3;
@@ -1057,61 +950,167 @@ static int bmp280_probe(struct i2c_client *client,
data->oversampling_press = ilog2(16);
data->oversampling_humid = ilog2(16);
data->oversampling_temp = ilog2(2);
+ data->start_up_time = 2;
break;
default:
return -EINVAL;
}
- data->regmap = devm_regmap_init_i2c(client,
- data->chip_info->regmap_config);
- if (IS_ERR(data->regmap)) {
- dev_err(&client->dev, "failed to allocate register map\n");
- return PTR_ERR(data->regmap);
+ /* Bring up regulators */
+ data->vddd = devm_regulator_get(dev, "vddd");
+ if (IS_ERR(data->vddd)) {
+ dev_err(dev, "failed to get VDDD regulator\n");
+ return PTR_ERR(data->vddd);
+ }
+ ret = regulator_enable(data->vddd);
+ if (ret) {
+ dev_err(dev, "failed to enable VDDD regulator\n");
+ return ret;
+ }
+ data->vdda = devm_regulator_get(dev, "vdda");
+ if (IS_ERR(data->vdda)) {
+ dev_err(dev, "failed to get VDDA regulator\n");
+ ret = PTR_ERR(data->vddd);
+ goto out_disable_vddd;
+ }
+ ret = regulator_enable(data->vdda);
+ if (ret) {
+ dev_err(dev, "failed to enable VDDA regulator\n");
+ goto out_disable_vddd;
+ }
+ /* Wait to make sure we started up properly */
+ mdelay(data->start_up_time);
+
+ /* Bring chip out of reset if there is an assigned GPIO line */
+ gpiod = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ /* Deassert the signal */
+ if (!IS_ERR(gpiod)) {
+ dev_info(dev, "release reset\n");
+ gpiod_set_value(gpiod, 0);
}
- ret = regmap_read(data->regmap, BMP280_REG_ID, &chip_id);
+ data->regmap = regmap;
+ ret = regmap_read(regmap, BMP280_REG_ID, &chip_id);
if (ret < 0)
- return ret;
- if (chip_id != id->driver_data) {
- dev_err(&client->dev, "bad chip id. expected %lx got %x\n",
- id->driver_data, chip_id);
- return -EINVAL;
+ goto out_disable_vdda;
+ if (chip_id != chip) {
+ dev_err(dev, "bad chip id: expected %x got %x\n",
+ chip, chip_id);
+ ret = -EINVAL;
+ goto out_disable_vdda;
}
ret = data->chip_info->chip_config(data);
if (ret < 0)
- return ret;
+ goto out_disable_vdda;
- return devm_iio_device_register(&client->dev, indio_dev);
+ dev_set_drvdata(dev, indio_dev);
+
+ /*
+ * The BMP085 and BMP180 has calibration in an E2PROM, read it out
+ * at probe time. It will not change.
+ */
+ if (chip_id == BMP180_CHIP_ID) {
+ ret = bmp180_read_calib(data, &data->calib);
+ if (ret < 0) {
+ dev_err(data->dev,
+ "failed to read calibration coefficients\n");
+ goto out_disable_vdda;
+ }
+ }
+
+ /*
+ * Attempt to grab an optional EOC IRQ - only the BMP085 has this
+ * however as it happens, the BMP085 shares the chip ID of BMP180
+ * so we look for an IRQ if we have that.
+ */
+ if (irq > 0 || (chip_id == BMP180_CHIP_ID)) {
+ ret = bmp085_fetch_eoc_irq(dev, name, irq, data);
+ if (ret)
+ goto out_disable_vdda;
+ }
+
+ /* Enable runtime PM */
+ pm_runtime_get_noresume(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ /*
+ * Set autosuspend to two orders of magnitude larger than the
+ * start-up time.
+ */
+ pm_runtime_set_autosuspend_delay(dev, data->start_up_time *100);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_put(dev);
+
+ ret = iio_device_register(indio_dev);
+ if (ret)
+ goto out_runtime_pm_disable;
+
+
+ return 0;
+
+out_runtime_pm_disable:
+ pm_runtime_get_sync(data->dev);
+ pm_runtime_put_noidle(data->dev);
+ pm_runtime_disable(data->dev);
+out_disable_vdda:
+ regulator_disable(data->vdda);
+out_disable_vddd:
+ regulator_disable(data->vddd);
+ return ret;
+}
+EXPORT_SYMBOL(bmp280_common_probe);
+
+int bmp280_common_remove(struct device *dev)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct bmp280_data *data = iio_priv(indio_dev);
+
+ iio_device_unregister(indio_dev);
+ pm_runtime_get_sync(data->dev);
+ pm_runtime_put_noidle(data->dev);
+ pm_runtime_disable(data->dev);
+ regulator_disable(data->vdda);
+ regulator_disable(data->vddd);
+ return 0;
+}
+EXPORT_SYMBOL(bmp280_common_remove);
+
+#ifdef CONFIG_PM
+static int bmp280_runtime_suspend(struct device *dev)
+{
+ struct bmp280_data *data = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regulator_disable(data->vdda);
+ if (ret)
+ return ret;
+ return regulator_disable(data->vddd);
}
-static const struct acpi_device_id bmp280_acpi_match[] = {
- {"BMP0280", BMP280_CHIP_ID },
- {"BMP0180", BMP180_CHIP_ID },
- {"BMP0085", BMP180_CHIP_ID },
- {"BME0280", BME280_CHIP_ID },
- { },
-};
-MODULE_DEVICE_TABLE(acpi, bmp280_acpi_match);
+static int bmp280_runtime_resume(struct device *dev)
+{
+ struct bmp280_data *data = dev_get_drvdata(dev);
+ int ret;
-static const struct i2c_device_id bmp280_id[] = {
- {"bmp280", BMP280_CHIP_ID },
- {"bmp180", BMP180_CHIP_ID },
- {"bmp085", BMP180_CHIP_ID },
- {"bme280", BME280_CHIP_ID },
- { },
-};
-MODULE_DEVICE_TABLE(i2c, bmp280_id);
+ ret = regulator_enable(data->vddd);
+ if (ret)
+ return ret;
+ ret = regulator_enable(data->vdda);
+ if (ret)
+ return ret;
+ msleep(data->start_up_time);
+ return data->chip_info->chip_config(data);
+}
+#endif /* CONFIG_PM */
-static struct i2c_driver bmp280_driver = {
- .driver = {
- .name = "bmp280",
- .acpi_match_table = ACPI_PTR(bmp280_acpi_match),
- },
- .probe = bmp280_probe,
- .id_table = bmp280_id,
+const struct dev_pm_ops bmp280_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(bmp280_runtime_suspend,
+ bmp280_runtime_resume, NULL)
};
-module_i2c_driver(bmp280_driver);
+EXPORT_SYMBOL(bmp280_dev_pm_ops);
MODULE_AUTHOR("Vlad Dogaru <vlad.dogaru@intel.com>");
MODULE_DESCRIPTION("Driver for Bosch Sensortec BMP180/BMP280 pressure and temperature sensor");
diff --git a/drivers/iio/pressure/bmp280-i2c.c b/drivers/iio/pressure/bmp280-i2c.c
new file mode 100644
index 000000000000..03742b15b72a
--- /dev/null
+++ b/drivers/iio/pressure/bmp280-i2c.c
@@ -0,0 +1,91 @@
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/acpi.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+#include "bmp280.h"
+
+static int bmp280_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct regmap *regmap;
+ const struct regmap_config *regmap_config;
+
+ switch (id->driver_data) {
+ case BMP180_CHIP_ID:
+ regmap_config = &bmp180_regmap_config;
+ break;
+ case BMP280_CHIP_ID:
+ case BME280_CHIP_ID:
+ regmap_config = &bmp280_regmap_config;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap = devm_regmap_init_i2c(client, regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(&client->dev, "failed to allocate register map\n");
+ return PTR_ERR(regmap);
+ }
+
+ return bmp280_common_probe(&client->dev,
+ regmap,
+ id->driver_data,
+ id->name,
+ client->irq);
+}
+
+static int bmp280_i2c_remove(struct i2c_client *client)
+{
+ return bmp280_common_remove(&client->dev);
+}
+
+static const struct acpi_device_id bmp280_acpi_i2c_match[] = {
+ {"BMP0280", BMP280_CHIP_ID },
+ {"BMP0180", BMP180_CHIP_ID },
+ {"BMP0085", BMP180_CHIP_ID },
+ {"BME0280", BME280_CHIP_ID },
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, bmp280_acpi_i2c_match);
+
+#ifdef CONFIG_OF
+static const struct of_device_id bmp280_of_i2c_match[] = {
+ { .compatible = "bosch,bme280", .data = (void *)BME280_CHIP_ID },
+ { .compatible = "bosch,bmp280", .data = (void *)BMP280_CHIP_ID },
+ { .compatible = "bosch,bmp180", .data = (void *)BMP180_CHIP_ID },
+ { .compatible = "bosch,bmp085", .data = (void *)BMP180_CHIP_ID },
+ { },
+};
+MODULE_DEVICE_TABLE(of, bmp280_of_i2c_match);
+#else
+#define bmp280_of_i2c_match NULL
+#endif
+
+static const struct i2c_device_id bmp280_i2c_id[] = {
+ {"bmp280", BMP280_CHIP_ID },
+ {"bmp180", BMP180_CHIP_ID },
+ {"bmp085", BMP180_CHIP_ID },
+ {"bme280", BME280_CHIP_ID },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, bmp280_i2c_id);
+
+static struct i2c_driver bmp280_i2c_driver = {
+ .driver = {
+ .name = "bmp280",
+ .acpi_match_table = ACPI_PTR(bmp280_acpi_i2c_match),
+ .of_match_table = of_match_ptr(bmp280_of_i2c_match),
+ .pm = &bmp280_dev_pm_ops,
+ },
+ .probe = bmp280_i2c_probe,
+ .remove = bmp280_i2c_remove,
+ .id_table = bmp280_i2c_id,
+};
+module_i2c_driver(bmp280_i2c_driver);
+
+MODULE_AUTHOR("Vlad Dogaru <vlad.dogaru@intel.com>");
+MODULE_DESCRIPTION("Driver for Bosch Sensortec BMP180/BMP280 pressure and temperature sensor");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/pressure/bmp280-regmap.c b/drivers/iio/pressure/bmp280-regmap.c
new file mode 100644
index 000000000000..6807113ec09f
--- /dev/null
+++ b/drivers/iio/pressure/bmp280-regmap.c
@@ -0,0 +1,84 @@
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "bmp280.h"
+
+static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case BMP280_REG_CTRL_MEAS:
+ case BMP280_REG_RESET:
+ return true;
+ default:
+ return false;
+ };
+}
+
+static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case BMP180_REG_OUT_XLSB:
+ case BMP180_REG_OUT_LSB:
+ case BMP180_REG_OUT_MSB:
+ case BMP280_REG_CTRL_MEAS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+const struct regmap_config bmp180_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = BMP180_REG_OUT_XLSB,
+ .cache_type = REGCACHE_RBTREE,
+
+ .writeable_reg = bmp180_is_writeable_reg,
+ .volatile_reg = bmp180_is_volatile_reg,
+};
+EXPORT_SYMBOL(bmp180_regmap_config);
+
+static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case BMP280_REG_CONFIG:
+ case BMP280_REG_CTRL_HUMIDITY:
+ case BMP280_REG_CTRL_MEAS:
+ case BMP280_REG_RESET:
+ return true;
+ default:
+ return false;
+ };
+}
+
+static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case BMP280_REG_HUMIDITY_LSB:
+ case BMP280_REG_HUMIDITY_MSB:
+ case BMP280_REG_TEMP_XLSB:
+ case BMP280_REG_TEMP_LSB:
+ case BMP280_REG_TEMP_MSB:
+ case BMP280_REG_PRESS_XLSB:
+ case BMP280_REG_PRESS_LSB:
+ case BMP280_REG_PRESS_MSB:
+ case BMP280_REG_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+const struct regmap_config bmp280_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = BMP280_REG_HUMIDITY_LSB,
+ .cache_type = REGCACHE_RBTREE,
+
+ .writeable_reg = bmp280_is_writeable_reg,
+ .volatile_reg = bmp280_is_volatile_reg,
+};
+EXPORT_SYMBOL(bmp280_regmap_config);
diff --git a/drivers/iio/pressure/bmp280-spi.c b/drivers/iio/pressure/bmp280-spi.c
new file mode 100644
index 000000000000..17bc95586f9e
--- /dev/null
+++ b/drivers/iio/pressure/bmp280-spi.c
@@ -0,0 +1,125 @@
+/*
+ * SPI interface for the BMP280 driver
+ *
+ * Inspired by the older BMP085 driver drivers/misc/bmp085-spi.c
+ */
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/regmap.h>
+
+#include "bmp280.h"
+
+static int bmp280_regmap_spi_write(void *context, const void *data,
+ size_t count)
+{
+ struct device *dev = context;
+ struct spi_device *spi = to_spi_device(dev);
+ u8 buf[2];
+
+ memcpy(buf, data, 2);
+ /*
+ * The SPI register address (= full register address without bit 7) and
+ * the write command (bit7 = RW = '0')
+ */
+ buf[0] &= ~0x80;
+
+ return spi_write_then_read(spi, buf, 2, NULL, 0);
+}
+
+static int bmp280_regmap_spi_read(void *context, const void *reg,
+ size_t reg_size, void *val, size_t val_size)
+{
+ struct device *dev = context;
+ struct spi_device *spi = to_spi_device(dev);
+
+ return spi_write_then_read(spi, reg, reg_size, val, val_size);
+}
+
+static struct regmap_bus bmp280_regmap_bus = {
+ .write = bmp280_regmap_spi_write,
+ .read = bmp280_regmap_spi_read,
+ .reg_format_endian_default = REGMAP_ENDIAN_BIG,
+ .val_format_endian_default = REGMAP_ENDIAN_BIG,
+};
+
+static int bmp280_spi_probe(struct spi_device *spi)
+{
+ const struct spi_device_id *id = spi_get_device_id(spi);
+ struct regmap *regmap;
+ const struct regmap_config *regmap_config;
+ int ret;
+
+ spi->bits_per_word = 8;
+ ret = spi_setup(spi);
+ if (ret < 0) {
+ dev_err(&spi->dev, "spi_setup failed!\n");
+ return ret;
+ }
+
+ switch (id->driver_data) {
+ case BMP180_CHIP_ID:
+ regmap_config = &bmp180_regmap_config;
+ break;
+ case BMP280_CHIP_ID:
+ case BME280_CHIP_ID:
+ regmap_config = &bmp280_regmap_config;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap = devm_regmap_init(&spi->dev,
+ &bmp280_regmap_bus,
+ &spi->dev,
+ regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(&spi->dev, "failed to allocate register map\n");
+ return PTR_ERR(regmap);
+ }
+
+ return bmp280_common_probe(&spi->dev,
+ regmap,
+ id->driver_data,
+ id->name,
+ spi->irq);
+}
+
+static int bmp280_spi_remove(struct spi_device *spi)
+{
+ return bmp280_common_remove(&spi->dev);
+}
+
+static const struct of_device_id bmp280_of_spi_match[] = {
+ { .compatible = "bosch,bmp085", },
+ { .compatible = "bosch,bmp180", },
+ { .compatible = "bosch,bmp181", },
+ { .compatible = "bosch,bmp280", },
+ { .compatible = "bosch,bme280", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, bmp280_of_spi_match);
+
+static const struct spi_device_id bmp280_spi_id[] = {
+ { "bmp180", BMP180_CHIP_ID },
+ { "bmp181", BMP180_CHIP_ID },
+ { "bmp280", BMP280_CHIP_ID },
+ { "bme280", BME280_CHIP_ID },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, bmp280_spi_id);
+
+static struct spi_driver bmp280_spi_driver = {
+ .driver = {
+ .name = "bmp280",
+ .of_match_table = bmp280_of_spi_match,
+ .pm = &bmp280_dev_pm_ops,
+ },
+ .id_table = bmp280_spi_id,
+ .probe = bmp280_spi_probe,
+ .remove = bmp280_spi_remove,
+};
+module_spi_driver(bmp280_spi_driver);
+
+MODULE_DESCRIPTION("BMP280 SPI bus driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
new file mode 100644
index 000000000000..2c770e13be0e
--- /dev/null
+++ b/drivers/iio/pressure/bmp280.h
@@ -0,0 +1,112 @@
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/regmap.h>
+
+/* BMP280 specific registers */
+#define BMP280_REG_HUMIDITY_LSB 0xFE
+#define BMP280_REG_HUMIDITY_MSB 0xFD
+#define BMP280_REG_TEMP_XLSB 0xFC
+#define BMP280_REG_TEMP_LSB 0xFB
+#define BMP280_REG_TEMP_MSB 0xFA
+#define BMP280_REG_PRESS_XLSB 0xF9
+#define BMP280_REG_PRESS_LSB 0xF8
+#define BMP280_REG_PRESS_MSB 0xF7
+
+#define BMP280_REG_CONFIG 0xF5
+#define BMP280_REG_CTRL_MEAS 0xF4
+#define BMP280_REG_STATUS 0xF3
+#define BMP280_REG_CTRL_HUMIDITY 0xF2
+
+/* Due to non linear mapping, and data sizes we can't do a bulk read */
+#define BMP280_REG_COMP_H1 0xA1
+#define BMP280_REG_COMP_H2 0xE1
+#define BMP280_REG_COMP_H3 0xE3
+#define BMP280_REG_COMP_H4 0xE4
+#define BMP280_REG_COMP_H5 0xE5
+#define BMP280_REG_COMP_H6 0xE7
+
+#define BMP280_REG_COMP_TEMP_START 0x88
+#define BMP280_COMP_TEMP_REG_COUNT 6
+
+#define BMP280_REG_COMP_PRESS_START 0x8E
+#define BMP280_COMP_PRESS_REG_COUNT 18
+
+#define BMP280_FILTER_MASK (BIT(4) | BIT(3) | BIT(2))
+#define BMP280_FILTER_OFF 0
+#define BMP280_FILTER_2X BIT(2)
+#define BMP280_FILTER_4X BIT(3)
+#define BMP280_FILTER_8X (BIT(3) | BIT(2))
+#define BMP280_FILTER_16X BIT(4)
+
+#define BMP280_OSRS_HUMIDITY_MASK (BIT(2) | BIT(1) | BIT(0))
+#define BMP280_OSRS_HUMIDITIY_X(osrs_h) ((osrs_h) << 0)
+#define BMP280_OSRS_HUMIDITY_SKIP 0
+#define BMP280_OSRS_HUMIDITY_1X BMP280_OSRS_HUMIDITIY_X(1)
+#define BMP280_OSRS_HUMIDITY_2X BMP280_OSRS_HUMIDITIY_X(2)
+#define BMP280_OSRS_HUMIDITY_4X BMP280_OSRS_HUMIDITIY_X(3)
+#define BMP280_OSRS_HUMIDITY_8X BMP280_OSRS_HUMIDITIY_X(4)
+#define BMP280_OSRS_HUMIDITY_16X BMP280_OSRS_HUMIDITIY_X(5)
+
+#define BMP280_OSRS_TEMP_MASK (BIT(7) | BIT(6) | BIT(5))
+#define BMP280_OSRS_TEMP_SKIP 0
+#define BMP280_OSRS_TEMP_X(osrs_t) ((osrs_t) << 5)
+#define BMP280_OSRS_TEMP_1X BMP280_OSRS_TEMP_X(1)
+#define BMP280_OSRS_TEMP_2X BMP280_OSRS_TEMP_X(2)
+#define BMP280_OSRS_TEMP_4X BMP280_OSRS_TEMP_X(3)
+#define BMP280_OSRS_TEMP_8X BMP280_OSRS_TEMP_X(4)
+#define BMP280_OSRS_TEMP_16X BMP280_OSRS_TEMP_X(5)
+
+#define BMP280_OSRS_PRESS_MASK (BIT(4) | BIT(3) | BIT(2))
+#define BMP280_OSRS_PRESS_SKIP 0
+#define BMP280_OSRS_PRESS_X(osrs_p) ((osrs_p) << 2)
+#define BMP280_OSRS_PRESS_1X BMP280_OSRS_PRESS_X(1)
+#define BMP280_OSRS_PRESS_2X BMP280_OSRS_PRESS_X(2)
+#define BMP280_OSRS_PRESS_4X BMP280_OSRS_PRESS_X(3)
+#define BMP280_OSRS_PRESS_8X BMP280_OSRS_PRESS_X(4)
+#define BMP280_OSRS_PRESS_16X BMP280_OSRS_PRESS_X(5)
+
+#define BMP280_MODE_MASK (BIT(1) | BIT(0))
+#define BMP280_MODE_SLEEP 0
+#define BMP280_MODE_FORCED BIT(0)
+#define BMP280_MODE_NORMAL (BIT(1) | BIT(0))
+
+/* BMP180 specific registers */
+#define BMP180_REG_OUT_XLSB 0xF8
+#define BMP180_REG_OUT_LSB 0xF7
+#define BMP180_REG_OUT_MSB 0xF6
+
+#define BMP180_REG_CALIB_START 0xAA
+#define BMP180_REG_CALIB_COUNT 22
+
+#define BMP180_MEAS_SCO BIT(5)
+#define BMP180_MEAS_TEMP (0x0E | BMP180_MEAS_SCO)
+#define BMP180_MEAS_PRESS_X(oss) ((oss) << 6 | 0x14 | BMP180_MEAS_SCO)
+#define BMP180_MEAS_PRESS_1X BMP180_MEAS_PRESS_X(0)
+#define BMP180_MEAS_PRESS_2X BMP180_MEAS_PRESS_X(1)
+#define BMP180_MEAS_PRESS_4X BMP180_MEAS_PRESS_X(2)
+#define BMP180_MEAS_PRESS_8X BMP180_MEAS_PRESS_X(3)
+
+/* BMP180 and BMP280 common registers */
+#define BMP280_REG_CTRL_MEAS 0xF4
+#define BMP280_REG_RESET 0xE0
+#define BMP280_REG_ID 0xD0
+
+#define BMP180_CHIP_ID 0x55
+#define BMP280_CHIP_ID 0x58
+#define BME280_CHIP_ID 0x60
+#define BMP280_SOFT_RESET_VAL 0xB6
+
+/* Regmap configurations */
+extern const struct regmap_config bmp180_regmap_config;
+extern const struct regmap_config bmp280_regmap_config;
+
+/* Probe called from different transports */
+int bmp280_common_probe(struct device *dev,
+ struct regmap *regmap,
+ unsigned int chip,
+ const char *name,
+ int irq);
+int bmp280_common_remove(struct device *dev);
+
+/* PM ops */
+extern const struct dev_pm_ops bmp280_dev_pm_ops;
diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
index 01b2e0b18878..6392d7b62841 100644
--- a/drivers/iio/pressure/mpl3115.c
+++ b/drivers/iio/pressure/mpl3115.c
@@ -171,7 +171,7 @@ static irqreturn_t mpl3115_trigger_handler(int irq, void *p)
mutex_unlock(&data->lock);
iio_push_to_buffers_with_timestamp(indio_dev, buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
done:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/pressure/ms5611_core.c b/drivers/iio/pressure/ms5611_core.c
index 76578b07bb6e..feb41f82c64a 100644
--- a/drivers/iio/pressure/ms5611_core.c
+++ b/drivers/iio/pressure/ms5611_core.c
@@ -224,7 +224,8 @@ static irqreturn_t ms5611_trigger_handler(int irq, void *p)
if (ret < 0)
goto err;
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
err:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index 56d8f5eb9239..55df9a75eb3a 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -28,6 +28,72 @@
#include <linux/iio/common/st_sensors.h>
#include "st_pressure.h"
+/*
+ * About determining pressure scaling factors
+ * ------------------------------------------
+ *
+ * Datasheets specify typical pressure sensitivity so that pressure is computed
+ * according to the following equation :
+ * pressure[mBar] = raw / sensitivity
+ * where :
+ * raw the 24 bits long raw sampled pressure
+ * sensitivity a scaling factor specified by the datasheet in LSB/mBar
+ *
+ * IIO ABI expects pressure to be expressed as kPascal, hence pressure should be
+ * computed according to :
+ * pressure[kPascal] = pressure[mBar] / 10
+ * = raw / (sensitivity * 10) (1)
+ *
+ * Finally, st_press_read_raw() returns pressure scaling factor as an
+ * IIO_VAL_INT_PLUS_NANO with a zero integral part and "gain" as decimal part.
+ * Therefore, from (1), "gain" becomes :
+ * gain = 10^9 / (sensitivity * 10)
+ * = 10^8 / sensitivity
+ *
+ * About determining temperature scaling factors and offsets
+ * ---------------------------------------------------------
+ *
+ * Datasheets specify typical temperature sensitivity and offset so that
+ * temperature is computed according to the following equation :
+ * temp[Celsius] = offset[Celsius] + (raw / sensitivity)
+ * where :
+ * raw the 16 bits long raw sampled temperature
+ * offset a constant specified by the datasheet in degree Celsius
+ * (sometimes zero)
+ * sensitivity a scaling factor specified by the datasheet in LSB/Celsius
+ *
+ * IIO ABI expects temperature to be expressed as milli degree Celsius such as
+ * user space should compute temperature according to :
+ * temp[mCelsius] = temp[Celsius] * 10^3
+ * = (offset[Celsius] + (raw / sensitivity)) * 10^3
+ * = ((offset[Celsius] * sensitivity) + raw) *
+ * (10^3 / sensitivity) (2)
+ *
+ * IIO ABI expects user space to apply offset and scaling factors to raw samples
+ * according to :
+ * temp[mCelsius] = (OFFSET + raw) * SCALE
+ * where :
+ * OFFSET an arbitrary constant exposed by device
+ * SCALE an arbitrary scaling factor exposed by device
+ *
+ * Matching OFFSET and SCALE with members of (2) gives :
+ * OFFSET = offset[Celsius] * sensitivity (3)
+ * SCALE = 10^3 / sensitivity (4)
+ *
+ * st_press_read_raw() returns temperature scaling factor as an
+ * IIO_VAL_FRACTIONAL with a 10^3 numerator and "gain2" as denominator.
+ * Therefore, from (3), "gain2" becomes :
+ * gain2 = sensitivity
+ *
+ * When declared within channel, i.e. for a non zero specified offset,
+ * st_press_read_raw() will return the latter as an IIO_VAL_FRACTIONAL such as :
+ * numerator = OFFSET * 10^3
+ * denominator = 10^3
+ * giving from (4):
+ * numerator = offset[Celsius] * 10^3 * sensitivity
+ * = offset[mCelsius] * gain2
+ */
+
#define MCELSIUS_PER_CELSIUS 1000
/* Default pressure sensitivity */
@@ -39,8 +105,6 @@
#define ST_PRESS_LSB_PER_CELSIUS 480UL
#define ST_PRESS_MILLI_CELSIUS_OFFSET 42500UL
-#define ST_PRESS_NUMBER_DATA_CHANNELS 1
-
/* FULLSCALE */
#define ST_PRESS_FS_AVL_1100MB 1100
#define ST_PRESS_FS_AVL_1260MB 1260
@@ -48,7 +112,11 @@
#define ST_PRESS_1_OUT_XL_ADDR 0x28
#define ST_TEMP_1_OUT_L_ADDR 0x2b
-/* CUSTOM VALUES FOR LPS331AP SENSOR */
+/*
+ * CUSTOM VALUES FOR LPS331AP SENSOR
+ * See LPS331AP datasheet:
+ * http://www2.st.com/resource/en/datasheet/lps331ap.pdf
+ */
#define ST_PRESS_LPS331AP_WAI_EXP 0xbb
#define ST_PRESS_LPS331AP_ODR_ADDR 0x20
#define ST_PRESS_LPS331AP_ODR_MASK 0x70
@@ -71,7 +139,9 @@
#define ST_PRESS_LPS331AP_OD_IRQ_MASK 0x40
#define ST_PRESS_LPS331AP_MULTIREAD_BIT true
-/* CUSTOM VALUES FOR LPS001WP SENSOR */
+/*
+ * CUSTOM VALUES FOR THE OBSOLETE LPS001WP SENSOR
+ */
/* LPS001WP pressure resolution */
#define ST_PRESS_LPS001WP_LSB_PER_MBAR 16UL
@@ -94,7 +164,11 @@
#define ST_PRESS_LPS001WP_OUT_L_ADDR 0x28
#define ST_TEMP_LPS001WP_OUT_L_ADDR 0x2a
-/* CUSTOM VALUES FOR LPS25H SENSOR */
+/*
+ * CUSTOM VALUES FOR LPS25H SENSOR
+ * See LPS25H datasheet:
+ * http://www2.st.com/resource/en/datasheet/lps25h.pdf
+ */
#define ST_PRESS_LPS25H_WAI_EXP 0xbd
#define ST_PRESS_LPS25H_ODR_ADDR 0x20
#define ST_PRESS_LPS25H_ODR_MASK 0x70
@@ -117,7 +191,15 @@
#define ST_PRESS_LPS25H_OUT_XL_ADDR 0x28
#define ST_TEMP_LPS25H_OUT_L_ADDR 0x2b
-/* CUSTOM VALUES FOR LPS22HB SENSOR */
+/*
+ * CUSTOM VALUES FOR LPS22HB SENSOR
+ * See LPS22HB datasheet:
+ * http://www2.st.com/resource/en/datasheet/lps22hb.pdf
+ */
+
+/* LPS22HB temperature sensitivity */
+#define ST_PRESS_LPS22HB_LSB_PER_CELSIUS 100UL
+
#define ST_PRESS_LPS22HB_WAI_EXP 0xb1
#define ST_PRESS_LPS22HB_ODR_ADDR 0x10
#define ST_PRESS_LPS22HB_ODR_MASK 0x70
@@ -135,29 +217,28 @@
#define ST_PRESS_LPS22HB_DRDY_IRQ_INT2_MASK 0x08
#define ST_PRESS_LPS22HB_IHL_IRQ_ADDR 0x12
#define ST_PRESS_LPS22HB_IHL_IRQ_MASK 0x80
+#define ST_PRESS_LPS22HB_OD_IRQ_ADDR 0x12
+#define ST_PRESS_LPS22HB_OD_IRQ_MASK 0x40
#define ST_PRESS_LPS22HB_MULTIREAD_BIT true
static const struct iio_chan_spec st_press_1_channels[] = {
{
.type = IIO_PRESSURE,
- .channel2 = IIO_NO_MOD,
.address = ST_PRESS_1_OUT_XL_ADDR,
- .scan_index = ST_SENSORS_SCAN_X,
+ .scan_index = 0,
.scan_type = {
.sign = 'u',
.realbits = 24,
- .storagebits = 24,
+ .storagebits = 32,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
- .modified = 0,
},
{
.type = IIO_TEMP,
- .channel2 = IIO_NO_MOD,
.address = ST_TEMP_1_OUT_L_ADDR,
- .scan_index = -1,
+ .scan_index = 1,
.scan_type = {
.sign = 'u',
.realbits = 16,
@@ -168,17 +249,15 @@ static const struct iio_chan_spec st_press_1_channels[] = {
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_OFFSET),
- .modified = 0,
},
- IIO_CHAN_SOFT_TIMESTAMP(1)
+ IIO_CHAN_SOFT_TIMESTAMP(2)
};
static const struct iio_chan_spec st_press_lps001wp_channels[] = {
{
.type = IIO_PRESSURE,
- .channel2 = IIO_NO_MOD,
.address = ST_PRESS_LPS001WP_OUT_L_ADDR,
- .scan_index = ST_SENSORS_SCAN_X,
+ .scan_index = 0,
.scan_type = {
.sign = 'u',
.realbits = 16,
@@ -188,13 +267,11 @@ static const struct iio_chan_spec st_press_lps001wp_channels[] = {
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE),
- .modified = 0,
},
{
.type = IIO_TEMP,
- .channel2 = IIO_NO_MOD,
.address = ST_TEMP_LPS001WP_OUT_L_ADDR,
- .scan_index = -1,
+ .scan_index = 1,
.scan_type = {
.sign = 'u',
.realbits = 16,
@@ -204,30 +281,42 @@ static const struct iio_chan_spec st_press_lps001wp_channels[] = {
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE),
- .modified = 0,
},
- IIO_CHAN_SOFT_TIMESTAMP(1)
+ IIO_CHAN_SOFT_TIMESTAMP(2)
};
static const struct iio_chan_spec st_press_lps22hb_channels[] = {
{
.type = IIO_PRESSURE,
- .channel2 = IIO_NO_MOD,
.address = ST_PRESS_1_OUT_XL_ADDR,
.scan_index = 0,
.scan_type = {
.sign = 'u',
.realbits = 24,
- .storagebits = 24,
+ .storagebits = 32,
.endianness = IIO_LE,
},
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE),
.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
- .modified = 0,
},
- IIO_CHAN_SOFT_TIMESTAMP(1)
+ {
+ .type = IIO_TEMP,
+ .address = ST_TEMP_1_OUT_L_ADDR,
+ .scan_index = 1,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 16,
+ .storagebits = 16,
+ .endianness = IIO_LE,
+ },
+ .info_mask_separate =
+ BIT(IIO_CHAN_INFO_RAW) |
+ BIT(IIO_CHAN_INFO_SCALE),
+ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(2)
};
static const struct st_sensor_settings st_press_sensors_settings[] = {
@@ -413,9 +502,14 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
},
.fs = {
.fs_avl = {
+ /*
+ * Pressure and temperature sensitivity values
+ * as defined in table 3 of LPS22HB datasheet.
+ */
[0] = {
.num = ST_PRESS_FS_AVL_1260MB,
.gain = ST_PRESS_KPASCAL_NANO_SCALE,
+ .gain2 = ST_PRESS_LPS22HB_LSB_PER_CELSIUS,
},
},
},
@@ -429,6 +523,9 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
.mask_int2 = ST_PRESS_LPS22HB_DRDY_IRQ_INT2_MASK,
.addr_ihl = ST_PRESS_LPS22HB_IHL_IRQ_ADDR,
.mask_ihl = ST_PRESS_LPS22HB_IHL_IRQ_MASK,
+ .addr_od = ST_PRESS_LPS22HB_OD_IRQ_ADDR,
+ .mask_od = ST_PRESS_LPS22HB_OD_IRQ_MASK,
+ .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR,
},
.multi_read_bit = ST_PRESS_LPS22HB_MULTIREAD_BIT,
},
@@ -558,7 +655,13 @@ int st_press_common_probe(struct iio_dev *indio_dev)
if (err < 0)
goto st_press_power_off;
- press_data->num_data_channels = ST_PRESS_NUMBER_DATA_CHANNELS;
+ /*
+ * Skip timestamping channel while declaring available channels to
+ * common st_sensor layer. Look at st_sensors_get_buffer_element() to
+ * see how timestamps are explicitly pushed as last samples block
+ * element.
+ */
+ press_data->num_data_channels = press_data->sensor_settings->num_ch - 1;
press_data->multiread_bit = press_data->sensor_settings->multi_read_bit;
indio_dev->channels = press_data->sensor_settings->ch;
indio_dev->num_channels = press_data->sensor_settings->num_ch;
diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
index c0b0e82abf94..3141c3c161bb 100644
--- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
+++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
@@ -238,7 +238,7 @@ static irqreturn_t lidar_trigger_handler(int irq, void *private)
ret = lidar_get_measurement(data, data->buffer);
if (!ret) {
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
} else if (ret != -EINVAL) {
dev_err(&data->client->dev, "cannot read LIDAR measurement");
}
diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
index 66cd09a18786..1d74b3aafeed 100644
--- a/drivers/iio/proximity/sx9500.c
+++ b/drivers/iio/proximity/sx9500.c
@@ -492,7 +492,7 @@ static void sx9500_push_events(struct iio_dev *indio_dev)
dir = new_prox ? IIO_EV_DIR_FALLING : IIO_EV_DIR_RISING;
ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, chan,
IIO_EV_TYPE_THRESH, dir);
- iio_push_event(indio_dev, ev, iio_get_time_ns());
+ iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
data->prox_stat[chan] = new_prox;
}
}
@@ -669,7 +669,7 @@ static irqreturn_t sx9500_trigger_handler(int irq, void *private)
}
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
out:
mutex_unlock(&data->mutex);
diff --git a/drivers/staging/iio/accel/Kconfig b/drivers/staging/iio/accel/Kconfig
index f066aa30f0ac..1c994b57c7d2 100644
--- a/drivers/staging/iio/accel/Kconfig
+++ b/drivers/staging/iio/accel/Kconfig
@@ -51,20 +51,6 @@ config ADIS16240
To compile this driver as a module, say M here: the module will be
called adis16240.
-config LIS3L02DQ
- tristate "ST Microelectronics LIS3L02DQ Accelerometer Driver"
- depends on SPI
- select IIO_TRIGGER if IIO_BUFFER
- depends on !IIO_BUFFER || IIO_KFIFO_BUF
- depends on GPIOLIB || COMPILE_TEST
- help
- Say Y here to build SPI support for the ST microelectronics
- accelerometer. The driver supplies direct access via sysfs files
- and an event interface via a character device.
-
- To compile this driver as a module, say M here: the module will be
- called lis3l02dq.
-
config SCA3000
depends on IIO_BUFFER
depends on SPI
diff --git a/drivers/staging/iio/accel/Makefile b/drivers/staging/iio/accel/Makefile
index 415329c96f0c..1810a434a755 100644
--- a/drivers/staging/iio/accel/Makefile
+++ b/drivers/staging/iio/accel/Makefile
@@ -14,9 +14,5 @@ obj-$(CONFIG_ADIS16209) += adis16209.o
adis16240-y := adis16240_core.o
obj-$(CONFIG_ADIS16240) += adis16240.o
-lis3l02dq-y := lis3l02dq_core.o
-lis3l02dq-$(CONFIG_IIO_BUFFER) += lis3l02dq_ring.o
-obj-$(CONFIG_LIS3L02DQ) += lis3l02dq.o
-
sca3000-y := sca3000_core.o sca3000_ring.o
obj-$(CONFIG_SCA3000) += sca3000.o
diff --git a/drivers/staging/iio/accel/lis3l02dq.h b/drivers/staging/iio/accel/lis3l02dq.h
deleted file mode 100644
index 6bd3d4d5bc9d..000000000000
--- a/drivers/staging/iio/accel/lis3l02dq.h
+++ /dev/null
@@ -1,217 +0,0 @@
-/*
- * LISL02DQ.h -- support STMicroelectronics LISD02DQ
- * 3d 2g Linear Accelerometers via SPI
- *
- * Copyright (c) 2007 Jonathan Cameron <jic23@kernel.org>
- *
- * Loosely based upon tle62x0.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef SPI_LIS3L02DQ_H_
-#define SPI_LIS3L02DQ_H_
-#define LIS3L02DQ_READ_REG(a) ((a) | 0x80)
-#define LIS3L02DQ_WRITE_REG(a) a
-
-/* Calibration parameters */
-#define LIS3L02DQ_REG_OFFSET_X_ADDR 0x16
-#define LIS3L02DQ_REG_OFFSET_Y_ADDR 0x17
-#define LIS3L02DQ_REG_OFFSET_Z_ADDR 0x18
-
-#define LIS3L02DQ_REG_GAIN_X_ADDR 0x19
-#define LIS3L02DQ_REG_GAIN_Y_ADDR 0x1A
-#define LIS3L02DQ_REG_GAIN_Z_ADDR 0x1B
-
-/* Control Register (1 of 2) */
-#define LIS3L02DQ_REG_CTRL_1_ADDR 0x20
-/* Power ctrl - either bit set corresponds to on*/
-#define LIS3L02DQ_REG_CTRL_1_PD_ON 0xC0
-
-/* Decimation Factor */
-#define LIS3L02DQ_DEC_MASK 0x30
-#define LIS3L02DQ_REG_CTRL_1_DF_128 0x00
-#define LIS3L02DQ_REG_CTRL_1_DF_64 0x10
-#define LIS3L02DQ_REG_CTRL_1_DF_32 0x20
-#define LIS3L02DQ_REG_CTRL_1_DF_8 (0x10 | 0x20)
-
-/* Self Test Enable */
-#define LIS3L02DQ_REG_CTRL_1_SELF_TEST_ON 0x08
-
-/* Axes enable ctrls */
-#define LIS3L02DQ_REG_CTRL_1_AXES_Z_ENABLE 0x04
-#define LIS3L02DQ_REG_CTRL_1_AXES_Y_ENABLE 0x02
-#define LIS3L02DQ_REG_CTRL_1_AXES_X_ENABLE 0x01
-
-/* Control Register (2 of 2) */
-#define LIS3L02DQ_REG_CTRL_2_ADDR 0x21
-
-/* Block Data Update only after MSB and LSB read */
-#define LIS3L02DQ_REG_CTRL_2_BLOCK_UPDATE 0x40
-
-/* Set to big endian output */
-#define LIS3L02DQ_REG_CTRL_2_BIG_ENDIAN 0x20
-
-/* Reboot memory content */
-#define LIS3L02DQ_REG_CTRL_2_REBOOT_MEMORY 0x10
-
-/* Interrupt Enable - applies data ready to the RDY pad */
-#define LIS3L02DQ_REG_CTRL_2_ENABLE_INTERRUPT 0x08
-
-/* Enable Data Ready Generation - relationship with previous unclear in docs */
-#define LIS3L02DQ_REG_CTRL_2_ENABLE_DATA_READY_GENERATION 0x04
-
-/* SPI 3 wire mode */
-#define LIS3L02DQ_REG_CTRL_2_THREE_WIRE_SPI_MODE 0x02
-
-/* Data alignment, default is 12 bit right justified
- * - option for 16 bit left justified
- */
-#define LIS3L02DQ_REG_CTRL_2_DATA_ALIGNMENT_16_BIT_LEFT_JUSTIFIED 0x01
-
-/* Interrupt related stuff */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_ADDR 0x23
-
-/* Switch from or combination of conditions to and */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_BOOLEAN_AND 0x80
-
-/* Latch interrupt request,
- * if on ack must be given by reading the ack register
- */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_LATCH_SRC 0x40
-
-/* Z Interrupt on High (above threshold) */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Z_HIGH 0x20
-/* Z Interrupt on Low */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Z_LOW 0x10
-/* Y Interrupt on High */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Y_HIGH 0x08
-/* Y Interrupt on Low */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Y_LOW 0x04
-/* X Interrupt on High */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_X_HIGH 0x02
-/* X Interrupt on Low */
-#define LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_X_LOW 0x01
-
-/* Register that gives description of what caused interrupt
- * - latched if set in CFG_ADDRES
- */
-#define LIS3L02DQ_REG_WAKE_UP_SRC_ADDR 0x24
-/* top bit ignored */
-/* Interrupt Active */
-#define LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_ACTIVATED 0x40
-/* Interupts that have been triggered */
-#define LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Z_HIGH 0x20
-#define LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Z_LOW 0x10
-#define LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Y_HIGH 0x08
-#define LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Y_LOW 0x04
-#define LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_X_HIGH 0x02
-#define LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_X_LOW 0x01
-
-#define LIS3L02DQ_REG_WAKE_UP_ACK_ADDR 0x25
-
-/* Status register */
-#define LIS3L02DQ_REG_STATUS_ADDR 0x27
-/* XYZ axis data overrun - first is all overrun? */
-#define LIS3L02DQ_REG_STATUS_XYZ_OVERRUN 0x80
-#define LIS3L02DQ_REG_STATUS_Z_OVERRUN 0x40
-#define LIS3L02DQ_REG_STATUS_Y_OVERRUN 0x20
-#define LIS3L02DQ_REG_STATUS_X_OVERRUN 0x10
-/* XYZ new data available - first is all 3 available? */
-#define LIS3L02DQ_REG_STATUS_XYZ_NEW_DATA 0x08
-#define LIS3L02DQ_REG_STATUS_Z_NEW_DATA 0x04
-#define LIS3L02DQ_REG_STATUS_Y_NEW_DATA 0x02
-#define LIS3L02DQ_REG_STATUS_X_NEW_DATA 0x01
-
-/* The accelerometer readings - low and high bytes.
- * Form of high byte dependent on justification set in ctrl reg
- */
-#define LIS3L02DQ_REG_OUT_X_L_ADDR 0x28
-#define LIS3L02DQ_REG_OUT_X_H_ADDR 0x29
-#define LIS3L02DQ_REG_OUT_Y_L_ADDR 0x2A
-#define LIS3L02DQ_REG_OUT_Y_H_ADDR 0x2B
-#define LIS3L02DQ_REG_OUT_Z_L_ADDR 0x2C
-#define LIS3L02DQ_REG_OUT_Z_H_ADDR 0x2D
-
-/* Threshold values for all axes and both above and below thresholds
- * - i.e. there is only one value
- */
-#define LIS3L02DQ_REG_THS_L_ADDR 0x2E
-#define LIS3L02DQ_REG_THS_H_ADDR 0x2F
-
-#define LIS3L02DQ_DEFAULT_CTRL1 (LIS3L02DQ_REG_CTRL_1_PD_ON \
- | LIS3L02DQ_REG_CTRL_1_AXES_Z_ENABLE \
- | LIS3L02DQ_REG_CTRL_1_AXES_Y_ENABLE \
- | LIS3L02DQ_REG_CTRL_1_AXES_X_ENABLE \
- | LIS3L02DQ_REG_CTRL_1_DF_128)
-
-#define LIS3L02DQ_DEFAULT_CTRL2 0
-
-#define LIS3L02DQ_MAX_TX 12
-#define LIS3L02DQ_MAX_RX 12
-/**
- * struct lis3l02dq_state - device instance specific data
- * @us: actual spi_device
- * @trig: data ready trigger registered with iio
- * @buf_lock: mutex to protect tx and rx
- * @tx: transmit buffer
- * @rx: receive buffer
- **/
-struct lis3l02dq_state {
- struct spi_device *us;
- struct iio_trigger *trig;
- struct mutex buf_lock;
- int gpio;
- bool trigger_on;
-
- u8 tx[LIS3L02DQ_MAX_RX] ____cacheline_aligned;
- u8 rx[LIS3L02DQ_MAX_RX] ____cacheline_aligned;
-};
-
-int lis3l02dq_spi_read_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 *val);
-
-int lis3l02dq_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val);
-
-int lis3l02dq_disable_all_events(struct iio_dev *indio_dev);
-
-#ifdef CONFIG_IIO_BUFFER
-/* At the moment triggers are only used for buffer
- * filling. This may change!
- */
-void lis3l02dq_remove_trigger(struct iio_dev *indio_dev);
-int lis3l02dq_probe_trigger(struct iio_dev *indio_dev);
-
-int lis3l02dq_configure_buffer(struct iio_dev *indio_dev);
-void lis3l02dq_unconfigure_buffer(struct iio_dev *indio_dev);
-
-irqreturn_t lis3l02dq_data_rdy_trig_poll(int irq, void *private);
-#define lis3l02dq_th lis3l02dq_data_rdy_trig_poll
-
-#else /* CONFIG_IIO_BUFFER */
-#define lis3l02dq_th lis3l02dq_nobuffer
-
-static inline void lis3l02dq_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int lis3l02dq_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static int lis3l02dq_configure_buffer(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void lis3l02dq_unconfigure_buffer(struct iio_dev *indio_dev)
-{
-}
-#endif /* CONFIG_IIO_BUFFER */
-#endif /* SPI_LIS3L02DQ_H_ */
diff --git a/drivers/staging/iio/accel/lis3l02dq_core.c b/drivers/staging/iio/accel/lis3l02dq_core.c
deleted file mode 100644
index 7a6fed3f2d3f..000000000000
--- a/drivers/staging/iio/accel/lis3l02dq_core.c
+++ /dev/null
@@ -1,814 +0,0 @@
-/*
- * lis3l02dq.c support STMicroelectronics LISD02DQ
- * 3d 2g Linear Accelerometers via SPI
- *
- * Copyright (c) 2007 Jonathan Cameron <jic23@kernel.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Settings:
- * 16 bit left justified mode used.
- */
-
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/module.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/events.h>
-#include <linux/iio/buffer.h>
-
-#include "lis3l02dq.h"
-
-/* At the moment the spi framework doesn't allow global setting of cs_change.
- * It's in the likely to be added comment at the top of spi.h.
- * This means that use cannot be made of spi_write etc.
- */
-/* direct copy of the irq_default_primary_handler */
-#ifndef CONFIG_IIO_BUFFER
-static irqreturn_t lis3l02dq_nobuffer(int irq, void *private)
-{
- return IRQ_WAKE_THREAD;
-}
-#endif
-
-/**
- * lis3l02dq_spi_read_reg_8() - read single byte from a single register
- * @indio_dev: iio_dev for this actual device
- * @reg_address: the address of the register to be read
- * @val: pass back the resulting value
- **/
-int lis3l02dq_spi_read_reg_8(struct iio_dev *indio_dev,
- u8 reg_address, u8 *val)
-{
- struct lis3l02dq_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfer = {
- .tx_buf = st->tx,
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = LIS3L02DQ_READ_REG(reg_address);
- st->tx[1] = 0;
-
- ret = spi_sync_transfer(st->us, &xfer, 1);
- *val = st->rx[1];
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * lis3l02dq_spi_write_reg_8() - write single byte to a register
- * @indio_dev: iio_dev for this device
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-int lis3l02dq_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct lis3l02dq_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = LIS3L02DQ_WRITE_REG(reg_address);
- st->tx[1] = val;
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * lisl302dq_spi_write_reg_s16() - write 2 bytes to a pair of registers
- * @indio_dev: iio_dev for this device
- * @lower_reg_address: the address of the lower of the two registers.
- * Second register is assumed to have address one greater.
- * @value: value to be written
- **/
-static int lis3l02dq_spi_write_reg_s16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- s16 value)
-{
- int ret;
- struct lis3l02dq_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = { {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = LIS3L02DQ_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = LIS3L02DQ_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-static int lis3l02dq_read_reg_s16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- int *val)
-{
- struct lis3l02dq_state *st = iio_priv(indio_dev);
- int ret;
- s16 tempval;
- struct spi_transfer xfers[] = { {
- .tx_buf = st->tx,
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- }, {
- .tx_buf = st->tx + 2,
- .rx_buf = st->rx + 2,
- .bits_per_word = 8,
- .len = 2,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = LIS3L02DQ_READ_REG(lower_reg_address);
- st->tx[1] = 0;
- st->tx[2] = LIS3L02DQ_READ_REG(lower_reg_address + 1);
- st->tx[3] = 0;
-
- ret = spi_sync_transfer(st->us, xfers, ARRAY_SIZE(xfers));
- if (ret) {
- dev_err(&st->us->dev, "problem when reading 16 bit register");
- goto error_ret;
- }
- tempval = (s16)(st->rx[1]) | ((s16)(st->rx[3]) << 8);
-
- *val = tempval;
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
-enum lis3l02dq_rm_ind {
- LIS3L02DQ_ACCEL,
- LIS3L02DQ_GAIN,
- LIS3L02DQ_BIAS,
-};
-
-static u8 lis3l02dq_axis_map[3][3] = {
- [LIS3L02DQ_ACCEL] = { LIS3L02DQ_REG_OUT_X_L_ADDR,
- LIS3L02DQ_REG_OUT_Y_L_ADDR,
- LIS3L02DQ_REG_OUT_Z_L_ADDR },
- [LIS3L02DQ_GAIN] = { LIS3L02DQ_REG_GAIN_X_ADDR,
- LIS3L02DQ_REG_GAIN_Y_ADDR,
- LIS3L02DQ_REG_GAIN_Z_ADDR },
- [LIS3L02DQ_BIAS] = { LIS3L02DQ_REG_OFFSET_X_ADDR,
- LIS3L02DQ_REG_OFFSET_Y_ADDR,
- LIS3L02DQ_REG_OFFSET_Z_ADDR }
-};
-
-static int lis3l02dq_read_thresh(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan,
- enum iio_event_type type,
- enum iio_event_direction dir,
- enum iio_event_info info,
- int *val, int *val2)
-{
- int ret;
-
- ret = lis3l02dq_read_reg_s16(indio_dev, LIS3L02DQ_REG_THS_L_ADDR, val);
- if (ret)
- return ret;
- return IIO_VAL_INT;
-}
-
-static int lis3l02dq_write_thresh(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan,
- enum iio_event_type type,
- enum iio_event_direction dir,
- enum iio_event_info info,
- int val, int val2)
-{
- u16 value = val;
-
- return lis3l02dq_spi_write_reg_s16(indio_dev,
- LIS3L02DQ_REG_THS_L_ADDR,
- value);
-}
-
-static int lis3l02dq_write_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int val,
- int val2,
- long mask)
-{
- int ret = -EINVAL, reg;
- u8 uval;
- s8 sval;
-
- switch (mask) {
- case IIO_CHAN_INFO_CALIBBIAS:
- if (val > 255 || val < -256)
- return -EINVAL;
- sval = val;
- reg = lis3l02dq_axis_map[LIS3L02DQ_BIAS][chan->address];
- ret = lis3l02dq_spi_write_reg_8(indio_dev, reg, sval);
- break;
- case IIO_CHAN_INFO_CALIBSCALE:
- if (val & ~0xFF)
- return -EINVAL;
- uval = val;
- reg = lis3l02dq_axis_map[LIS3L02DQ_GAIN][chan->address];
- ret = lis3l02dq_spi_write_reg_8(indio_dev, reg, uval);
- break;
- }
- return ret;
-}
-
-static int lis3l02dq_read_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int *val,
- int *val2,
- long mask)
-{
- u8 utemp;
- s8 stemp;
- ssize_t ret = 0;
- u8 reg;
-
- switch (mask) {
- case IIO_CHAN_INFO_RAW:
- /* Take the iio_dev status lock */
- mutex_lock(&indio_dev->mlock);
- if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
- ret = -EBUSY;
- } else {
- reg = lis3l02dq_axis_map
- [LIS3L02DQ_ACCEL][chan->address];
- ret = lis3l02dq_read_reg_s16(indio_dev, reg, val);
- }
- mutex_unlock(&indio_dev->mlock);
- if (ret < 0)
- goto error_ret;
- return IIO_VAL_INT;
- case IIO_CHAN_INFO_SCALE:
- *val = 0;
- *val2 = 9580;
- return IIO_VAL_INT_PLUS_MICRO;
- case IIO_CHAN_INFO_CALIBSCALE:
- reg = lis3l02dq_axis_map[LIS3L02DQ_GAIN][chan->address];
- ret = lis3l02dq_spi_read_reg_8(indio_dev, reg, &utemp);
- if (ret)
- goto error_ret;
- /* to match with what previous code does */
- *val = utemp;
- return IIO_VAL_INT;
-
- case IIO_CHAN_INFO_CALIBBIAS:
- reg = lis3l02dq_axis_map[LIS3L02DQ_BIAS][chan->address];
- ret = lis3l02dq_spi_read_reg_8(indio_dev, reg, (u8 *)&stemp);
- /* to match with what previous code does */
- *val = stemp;
- return IIO_VAL_INT;
- }
-error_ret:
- return ret;
-}
-
-static ssize_t lis3l02dq_read_frequency(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- int ret, len = 0;
- s8 t;
-
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- (u8 *)&t);
- if (ret)
- return ret;
- t &= LIS3L02DQ_DEC_MASK;
- switch (t) {
- case LIS3L02DQ_REG_CTRL_1_DF_128:
- len = sprintf(buf, "280\n");
- break;
- case LIS3L02DQ_REG_CTRL_1_DF_64:
- len = sprintf(buf, "560\n");
- break;
- case LIS3L02DQ_REG_CTRL_1_DF_32:
- len = sprintf(buf, "1120\n");
- break;
- case LIS3L02DQ_REG_CTRL_1_DF_8:
- len = sprintf(buf, "4480\n");
- break;
- }
- return len;
-}
-
-static ssize_t lis3l02dq_write_frequency(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- unsigned long val;
- int ret;
- u8 t;
-
- ret = kstrtoul(buf, 10, &val);
- if (ret)
- return ret;
-
- mutex_lock(&indio_dev->mlock);
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- &t);
- if (ret)
- goto error_ret_mutex;
- /* Wipe the bits clean */
- t &= ~LIS3L02DQ_DEC_MASK;
- switch (val) {
- case 280:
- t |= LIS3L02DQ_REG_CTRL_1_DF_128;
- break;
- case 560:
- t |= LIS3L02DQ_REG_CTRL_1_DF_64;
- break;
- case 1120:
- t |= LIS3L02DQ_REG_CTRL_1_DF_32;
- break;
- case 4480:
- t |= LIS3L02DQ_REG_CTRL_1_DF_8;
- break;
- default:
- ret = -EINVAL;
- goto error_ret_mutex;
- }
-
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- t);
-
-error_ret_mutex:
- mutex_unlock(&indio_dev->mlock);
-
- return ret ? ret : len;
-}
-
-static int lis3l02dq_initial_setup(struct iio_dev *indio_dev)
-{
- struct lis3l02dq_state *st = iio_priv(indio_dev);
- int ret;
- u8 val, valtest;
-
- st->us->mode = SPI_MODE_3;
-
- spi_setup(st->us);
-
- val = LIS3L02DQ_DEFAULT_CTRL1;
- /* Write suitable defaults to ctrl1 */
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- val);
- if (ret) {
- dev_err(&st->us->dev, "problem with setup control register 1");
- goto err_ret;
- }
- /* Repeat as sometimes doesn't work first time? */
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- val);
- if (ret) {
- dev_err(&st->us->dev, "problem with setup control register 1");
- goto err_ret;
- }
-
- /*
- * Read back to check this has worked acts as loose test of correct
- * chip
- */
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- &valtest);
- if (ret || (valtest != val)) {
- dev_err(&indio_dev->dev,
- "device not playing ball %d %d\n", valtest, val);
- ret = -EINVAL;
- goto err_ret;
- }
-
- val = LIS3L02DQ_DEFAULT_CTRL2;
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- val);
- if (ret) {
- dev_err(&st->us->dev, "problem with setup control register 2");
- goto err_ret;
- }
-
- val = LIS3L02DQ_REG_WAKE_UP_CFG_LATCH_SRC;
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_CFG_ADDR,
- val);
- if (ret)
- dev_err(&st->us->dev, "problem with interrupt cfg register");
-err_ret:
-
- return ret;
-}
-
-static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
- lis3l02dq_read_frequency,
- lis3l02dq_write_frequency);
-
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("280 560 1120 4480");
-
-static irqreturn_t lis3l02dq_event_handler(int irq, void *private)
-{
- struct iio_dev *indio_dev = private;
- u8 t;
-
- s64 timestamp = iio_get_time_ns();
-
- lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_SRC_ADDR,
- &t);
-
- if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Z_HIGH)
- iio_push_event(indio_dev,
- IIO_MOD_EVENT_CODE(IIO_ACCEL,
- 0,
- IIO_MOD_Z,
- IIO_EV_TYPE_THRESH,
- IIO_EV_DIR_RISING),
- timestamp);
-
- if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Z_LOW)
- iio_push_event(indio_dev,
- IIO_MOD_EVENT_CODE(IIO_ACCEL,
- 0,
- IIO_MOD_Z,
- IIO_EV_TYPE_THRESH,
- IIO_EV_DIR_FALLING),
- timestamp);
-
- if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Y_HIGH)
- iio_push_event(indio_dev,
- IIO_MOD_EVENT_CODE(IIO_ACCEL,
- 0,
- IIO_MOD_Y,
- IIO_EV_TYPE_THRESH,
- IIO_EV_DIR_RISING),
- timestamp);
-
- if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Y_LOW)
- iio_push_event(indio_dev,
- IIO_MOD_EVENT_CODE(IIO_ACCEL,
- 0,
- IIO_MOD_Y,
- IIO_EV_TYPE_THRESH,
- IIO_EV_DIR_FALLING),
- timestamp);
-
- if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_X_HIGH)
- iio_push_event(indio_dev,
- IIO_MOD_EVENT_CODE(IIO_ACCEL,
- 0,
- IIO_MOD_X,
- IIO_EV_TYPE_THRESH,
- IIO_EV_DIR_RISING),
- timestamp);
-
- if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_X_LOW)
- iio_push_event(indio_dev,
- IIO_MOD_EVENT_CODE(IIO_ACCEL,
- 0,
- IIO_MOD_X,
- IIO_EV_TYPE_THRESH,
- IIO_EV_DIR_FALLING),
- timestamp);
-
- /* Ack and allow for new interrupts */
- lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_ACK_ADDR,
- &t);
-
- return IRQ_HANDLED;
-}
-
-static const struct iio_event_spec lis3l02dq_event[] = {
- {
- .type = IIO_EV_TYPE_THRESH,
- .dir = IIO_EV_DIR_RISING,
- .mask_separate = BIT(IIO_EV_INFO_ENABLE),
- .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE),
- }, {
- .type = IIO_EV_TYPE_THRESH,
- .dir = IIO_EV_DIR_FALLING,
- .mask_separate = BIT(IIO_EV_INFO_ENABLE),
- .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE),
- }
-};
-
-#define LIS3L02DQ_CHAN(index, mod) \
- { \
- .type = IIO_ACCEL, \
- .modified = 1, \
- .channel2 = mod, \
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
- BIT(IIO_CHAN_INFO_CALIBSCALE) | \
- BIT(IIO_CHAN_INFO_CALIBBIAS), \
- .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
- .address = index, \
- .scan_index = index, \
- .scan_type = { \
- .sign = 's', \
- .realbits = 12, \
- .storagebits = 16, \
- }, \
- .event_spec = lis3l02dq_event, \
- .num_event_specs = ARRAY_SIZE(lis3l02dq_event), \
- }
-
-static const struct iio_chan_spec lis3l02dq_channels[] = {
- LIS3L02DQ_CHAN(0, IIO_MOD_X),
- LIS3L02DQ_CHAN(1, IIO_MOD_Y),
- LIS3L02DQ_CHAN(2, IIO_MOD_Z),
- IIO_CHAN_SOFT_TIMESTAMP(3)
-};
-
-static int lis3l02dq_read_event_config(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan,
- enum iio_event_type type,
- enum iio_event_direction dir)
-{
- u8 val;
- int ret;
- u8 mask = 1 << (chan->channel2 * 2 + (dir == IIO_EV_DIR_RISING));
-
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_CFG_ADDR,
- &val);
- if (ret < 0)
- return ret;
-
- return !!(val & mask);
-}
-
-int lis3l02dq_disable_all_events(struct iio_dev *indio_dev)
-{
- int ret;
- u8 control, val;
-
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- &control);
-
- control &= ~LIS3L02DQ_REG_CTRL_2_ENABLE_INTERRUPT;
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- control);
- if (ret)
- goto error_ret;
- /* Also for consistency clear the mask */
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_CFG_ADDR,
- &val);
- if (ret)
- goto error_ret;
- val &= ~0x3f;
-
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_CFG_ADDR,
- val);
- if (ret)
- goto error_ret;
-
- ret = control;
-error_ret:
- return ret;
-}
-
-static int lis3l02dq_write_event_config(struct iio_dev *indio_dev,
- const struct iio_chan_spec *chan,
- enum iio_event_type type,
- enum iio_event_direction dir,
- int state)
-{
- int ret = 0;
- u8 val, control;
- u8 currentlyset;
- bool changed = false;
- u8 mask = 1 << (chan->channel2 * 2 + (dir == IIO_EV_DIR_RISING));
-
- mutex_lock(&indio_dev->mlock);
- /* read current control */
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- &control);
- if (ret)
- goto error_ret;
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_CFG_ADDR,
- &val);
- if (ret < 0)
- goto error_ret;
- currentlyset = val & mask;
-
- if (!currentlyset && state) {
- changed = true;
- val |= mask;
- } else if (currentlyset && !state) {
- changed = true;
- val &= ~mask;
- }
-
- if (changed) {
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_CFG_ADDR,
- val);
- if (ret)
- goto error_ret;
- control = val & 0x3f ?
- (control | LIS3L02DQ_REG_CTRL_2_ENABLE_INTERRUPT) :
- (control & ~LIS3L02DQ_REG_CTRL_2_ENABLE_INTERRUPT);
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- control);
- if (ret)
- goto error_ret;
- }
-
-error_ret:
- mutex_unlock(&indio_dev->mlock);
- return ret;
-}
-
-static struct attribute *lis3l02dq_attributes[] = {
- &iio_dev_attr_sampling_frequency.dev_attr.attr,
- &iio_const_attr_sampling_frequency_available.dev_attr.attr,
- NULL
-};
-
-static const struct attribute_group lis3l02dq_attribute_group = {
- .attrs = lis3l02dq_attributes,
-};
-
-static const struct iio_info lis3l02dq_info = {
- .read_raw = &lis3l02dq_read_raw,
- .write_raw = &lis3l02dq_write_raw,
- .read_event_value = &lis3l02dq_read_thresh,
- .write_event_value = &lis3l02dq_write_thresh,
- .write_event_config = &lis3l02dq_write_event_config,
- .read_event_config = &lis3l02dq_read_event_config,
- .driver_module = THIS_MODULE,
- .attrs = &lis3l02dq_attribute_group,
-};
-
-static int lis3l02dq_probe(struct spi_device *spi)
-{
- int ret;
- struct lis3l02dq_state *st;
- struct iio_dev *indio_dev;
-
- indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
- if (!indio_dev)
- return -ENOMEM;
- st = iio_priv(indio_dev);
- /* this is only used for removal purposes */
- spi_set_drvdata(spi, indio_dev);
-
- st->us = spi;
- st->gpio = of_get_gpio(spi->dev.of_node, 0);
- mutex_init(&st->buf_lock);
- indio_dev->name = spi->dev.driver->name;
- indio_dev->dev.parent = &spi->dev;
- indio_dev->info = &lis3l02dq_info;
- indio_dev->channels = lis3l02dq_channels;
- indio_dev->num_channels = ARRAY_SIZE(lis3l02dq_channels);
-
- indio_dev->modes = INDIO_DIRECT_MODE;
-
- ret = lis3l02dq_configure_buffer(indio_dev);
- if (ret)
- return ret;
-
- if (spi->irq) {
- ret = request_threaded_irq(st->us->irq,
- &lis3l02dq_th,
- &lis3l02dq_event_handler,
- IRQF_TRIGGER_RISING,
- "lis3l02dq",
- indio_dev);
- if (ret)
- goto error_unreg_buffer_funcs;
-
- ret = lis3l02dq_probe_trigger(indio_dev);
- if (ret)
- goto error_free_interrupt;
- }
-
- /* Get the device into a sane initial state */
- ret = lis3l02dq_initial_setup(indio_dev);
- if (ret)
- goto error_remove_trigger;
-
- ret = iio_device_register(indio_dev);
- if (ret)
- goto error_remove_trigger;
-
- return 0;
-
-error_remove_trigger:
- if (spi->irq)
- lis3l02dq_remove_trigger(indio_dev);
-error_free_interrupt:
- if (spi->irq)
- free_irq(st->us->irq, indio_dev);
-error_unreg_buffer_funcs:
- lis3l02dq_unconfigure_buffer(indio_dev);
- return ret;
-}
-
-/* Power down the device */
-static int lis3l02dq_stop_device(struct iio_dev *indio_dev)
-{
- int ret;
- struct lis3l02dq_state *st = iio_priv(indio_dev);
- u8 val = 0;
-
- mutex_lock(&indio_dev->mlock);
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- val);
- if (ret) {
- dev_err(&st->us->dev, "problem with turning device off: ctrl1");
- goto err_ret;
- }
-
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- val);
- if (ret)
- dev_err(&st->us->dev, "problem with turning device off: ctrl2");
-err_ret:
- mutex_unlock(&indio_dev->mlock);
- return ret;
-}
-
-/* fixme, confirm ordering in this function */
-static int lis3l02dq_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
- struct lis3l02dq_state *st = iio_priv(indio_dev);
-
- iio_device_unregister(indio_dev);
-
- lis3l02dq_disable_all_events(indio_dev);
- lis3l02dq_stop_device(indio_dev);
-
- if (spi->irq)
- free_irq(st->us->irq, indio_dev);
-
- lis3l02dq_remove_trigger(indio_dev);
- lis3l02dq_unconfigure_buffer(indio_dev);
-
- return 0;
-}
-
-static struct spi_driver lis3l02dq_driver = {
- .driver = {
- .name = "lis3l02dq",
- },
- .probe = lis3l02dq_probe,
- .remove = lis3l02dq_remove,
-};
-module_spi_driver(lis3l02dq_driver);
-
-MODULE_AUTHOR("Jonathan Cameron <jic23@kernel.org>");
-MODULE_DESCRIPTION("ST LIS3L02DQ Accelerometer SPI driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:lis3l02dq");
diff --git a/drivers/staging/iio/accel/lis3l02dq_ring.c b/drivers/staging/iio/accel/lis3l02dq_ring.c
deleted file mode 100644
index 50c162e0c31f..000000000000
--- a/drivers/staging/iio/accel/lis3l02dq_ring.c
+++ /dev/null
@@ -1,428 +0,0 @@
-#include <linux/interrupt.h>
-#include <linux/gpio.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/export.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/kfifo_buf.h>
-#include <linux/iio/trigger.h>
-#include <linux/iio/trigger_consumer.h>
-#include "lis3l02dq.h"
-
-/**
- * combine_8_to_16() utility function to munge two u8s into u16
- **/
-static inline u16 combine_8_to_16(u8 lower, u8 upper)
-{
- u16 _lower = lower;
- u16 _upper = upper;
-
- return _lower | (_upper << 8);
-}
-
-/**
- * lis3l02dq_data_rdy_trig_poll() the event handler for the data rdy trig
- **/
-irqreturn_t lis3l02dq_data_rdy_trig_poll(int irq, void *private)
-{
- struct iio_dev *indio_dev = private;
- struct lis3l02dq_state *st = iio_priv(indio_dev);
-
- if (st->trigger_on) {
- iio_trigger_poll(st->trig);
- return IRQ_HANDLED;
- }
-
- return IRQ_WAKE_THREAD;
-}
-
-static const u8 read_all_tx_array[] = {
- LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_X_L_ADDR), 0,
- LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_X_H_ADDR), 0,
- LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_Y_L_ADDR), 0,
- LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_Y_H_ADDR), 0,
- LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_Z_L_ADDR), 0,
- LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_Z_H_ADDR), 0,
-};
-
-/**
- * lis3l02dq_read_all() Reads all channels currently selected
- * @indio_dev: IIO device state
- * @rx_array: (dma capable) receive array, must be at least
- * 4*number of channels
- **/
-static int lis3l02dq_read_all(struct iio_dev *indio_dev, u8 *rx_array)
-{
- struct lis3l02dq_state *st = iio_priv(indio_dev);
- struct spi_transfer *xfers;
- struct spi_message msg;
- int ret, i, j = 0;
-
- xfers = kcalloc(bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength) * 2,
- sizeof(*xfers), GFP_KERNEL);
- if (!xfers)
- return -ENOMEM;
-
- mutex_lock(&st->buf_lock);
-
- for (i = 0; i < ARRAY_SIZE(read_all_tx_array) / 4; i++)
- if (test_bit(i, indio_dev->active_scan_mask)) {
- /* lower byte */
- xfers[j].tx_buf = st->tx + (2 * j);
- st->tx[2 * j] = read_all_tx_array[i * 4];
- st->tx[2 * j + 1] = 0;
- if (rx_array)
- xfers[j].rx_buf = rx_array + (j * 2);
- xfers[j].bits_per_word = 8;
- xfers[j].len = 2;
- xfers[j].cs_change = 1;
- j++;
-
- /* upper byte */
- xfers[j].tx_buf = st->tx + (2 * j);
- st->tx[2 * j] = read_all_tx_array[i * 4 + 2];
- st->tx[2 * j + 1] = 0;
- if (rx_array)
- xfers[j].rx_buf = rx_array + (j * 2);
- xfers[j].bits_per_word = 8;
- xfers[j].len = 2;
- xfers[j].cs_change = 1;
- j++;
- }
-
- /* After these are transmitted, the rx_buff should have
- * values in alternate bytes
- */
- spi_message_init(&msg);
- for (j = 0; j < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength) * 2; j++)
- spi_message_add_tail(&xfers[j], &msg);
-
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
- kfree(xfers);
-
- return ret;
-}
-
-static int lis3l02dq_get_buffer_element(struct iio_dev *indio_dev,
- u8 *buf)
-{
- int ret, i;
- u8 *rx_array;
- s16 *data = (s16 *)buf;
- int scan_count = bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength);
-
- rx_array = kcalloc(4, scan_count, GFP_KERNEL);
- if (!rx_array)
- return -ENOMEM;
- ret = lis3l02dq_read_all(indio_dev, rx_array);
- if (ret < 0) {
- kfree(rx_array);
- return ret;
- }
- for (i = 0; i < scan_count; i++)
- data[i] = combine_8_to_16(rx_array[i * 4 + 1],
- rx_array[i * 4 + 3]);
- kfree(rx_array);
-
- return i * sizeof(data[0]);
-}
-
-static irqreturn_t lis3l02dq_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- int len = 0;
- char *data;
-
- data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (!data)
- goto done;
-
- if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
- len = lis3l02dq_get_buffer_element(indio_dev, data);
-
- iio_push_to_buffers_with_timestamp(indio_dev, data, pf->timestamp);
-
- kfree(data);
-done:
- iio_trigger_notify_done(indio_dev->trig);
- return IRQ_HANDLED;
-}
-
-/* Caller responsible for locking as necessary. */
-static int
-__lis3l02dq_write_data_ready_config(struct iio_dev *indio_dev, bool state)
-{
- int ret;
- u8 valold;
- bool currentlyset;
- struct lis3l02dq_state *st = iio_priv(indio_dev);
-
- /* Get the current event mask register */
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- &valold);
- if (ret)
- goto error_ret;
- /* Find out if data ready is already on */
- currentlyset
- = valold & LIS3L02DQ_REG_CTRL_2_ENABLE_DATA_READY_GENERATION;
-
- /* Disable requested */
- if (!state && currentlyset) {
- /* Disable the data ready signal */
- valold &= ~LIS3L02DQ_REG_CTRL_2_ENABLE_DATA_READY_GENERATION;
-
- /* The double write is to overcome a hardware bug? */
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- valold);
- if (ret)
- goto error_ret;
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- valold);
- if (ret)
- goto error_ret;
- st->trigger_on = false;
- /* Enable requested */
- } else if (state && !currentlyset) {
- /* If not set, enable requested
- * first disable all events
- */
- ret = lis3l02dq_disable_all_events(indio_dev);
- if (ret < 0)
- goto error_ret;
-
- valold = ret |
- LIS3L02DQ_REG_CTRL_2_ENABLE_DATA_READY_GENERATION;
-
- st->trigger_on = true;
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_2_ADDR,
- valold);
- if (ret)
- goto error_ret;
- }
-
- return 0;
-error_ret:
- return ret;
-}
-
-/**
- * lis3l02dq_data_rdy_trigger_set_state() set datardy interrupt state
- *
- * If disabling the interrupt also does a final read to ensure it is clear.
- * This is only important in some cases where the scan enable elements are
- * switched before the buffer is reenabled.
- **/
-static int lis3l02dq_data_rdy_trigger_set_state(struct iio_trigger *trig,
- bool state)
-{
- struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
- int ret = 0;
- u8 t;
-
- __lis3l02dq_write_data_ready_config(indio_dev, state);
- if (!state) {
- /*
- * A possible quirk with the handler is currently worked around
- * by ensuring outstanding read events are cleared.
- */
- ret = lis3l02dq_read_all(indio_dev, NULL);
- }
- lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_WAKE_UP_SRC_ADDR,
- &t);
- return ret;
-}
-
-/**
- * lis3l02dq_trig_try_reen() try reenabling irq for data rdy trigger
- * @trig: the datardy trigger
- */
-static int lis3l02dq_trig_try_reen(struct iio_trigger *trig)
-{
- struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
- struct lis3l02dq_state *st = iio_priv(indio_dev);
- int i;
-
- /* If gpio still high (or high again)
- * In theory possible we will need to do this several times
- */
- for (i = 0; i < 5; i++)
- if (gpio_get_value(st->gpio))
- lis3l02dq_read_all(indio_dev, NULL);
- else
- break;
- if (i == 5)
- pr_info("Failed to clear the interrupt for lis3l02dq\n");
-
- /* irq reenabled so success! */
- return 0;
-}
-
-static const struct iio_trigger_ops lis3l02dq_trigger_ops = {
- .owner = THIS_MODULE,
- .set_trigger_state = &lis3l02dq_data_rdy_trigger_set_state,
- .try_reenable = &lis3l02dq_trig_try_reen,
-};
-
-int lis3l02dq_probe_trigger(struct iio_dev *indio_dev)
-{
- int ret;
- struct lis3l02dq_state *st = iio_priv(indio_dev);
-
- st->trig = iio_trigger_alloc("lis3l02dq-dev%d", indio_dev->id);
- if (!st->trig) {
- ret = -ENOMEM;
- goto error_ret;
- }
-
- st->trig->dev.parent = &st->us->dev;
- st->trig->ops = &lis3l02dq_trigger_ops;
- iio_trigger_set_drvdata(st->trig, indio_dev);
- ret = iio_trigger_register(st->trig);
- if (ret)
- goto error_free_trig;
-
- return 0;
-
-error_free_trig:
- iio_trigger_free(st->trig);
-error_ret:
- return ret;
-}
-
-void lis3l02dq_remove_trigger(struct iio_dev *indio_dev)
-{
- struct lis3l02dq_state *st = iio_priv(indio_dev);
-
- iio_trigger_unregister(st->trig);
- iio_trigger_free(st->trig);
-}
-
-void lis3l02dq_unconfigure_buffer(struct iio_dev *indio_dev)
-{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_kfifo_free(indio_dev->buffer);
-}
-
-static int lis3l02dq_buffer_postenable(struct iio_dev *indio_dev)
-{
- /* Disable unwanted channels otherwise the interrupt will not clear */
- u8 t;
- int ret;
- bool oneenabled = false;
-
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- &t);
- if (ret)
- goto error_ret;
-
- if (test_bit(0, indio_dev->active_scan_mask)) {
- t |= LIS3L02DQ_REG_CTRL_1_AXES_X_ENABLE;
- oneenabled = true;
- } else {
- t &= ~LIS3L02DQ_REG_CTRL_1_AXES_X_ENABLE;
- }
- if (test_bit(1, indio_dev->active_scan_mask)) {
- t |= LIS3L02DQ_REG_CTRL_1_AXES_Y_ENABLE;
- oneenabled = true;
- } else {
- t &= ~LIS3L02DQ_REG_CTRL_1_AXES_Y_ENABLE;
- }
- if (test_bit(2, indio_dev->active_scan_mask)) {
- t |= LIS3L02DQ_REG_CTRL_1_AXES_Z_ENABLE;
- oneenabled = true;
- } else {
- t &= ~LIS3L02DQ_REG_CTRL_1_AXES_Z_ENABLE;
- }
- if (!oneenabled) /* what happens in this case is unknown */
- return -EINVAL;
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- t);
- if (ret)
- goto error_ret;
-
- return iio_triggered_buffer_postenable(indio_dev);
-error_ret:
- return ret;
-}
-
-/* Turn all channels on again */
-static int lis3l02dq_buffer_predisable(struct iio_dev *indio_dev)
-{
- u8 t;
- int ret;
-
- ret = iio_triggered_buffer_predisable(indio_dev);
- if (ret)
- goto error_ret;
-
- ret = lis3l02dq_spi_read_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- &t);
- if (ret)
- goto error_ret;
- t |= LIS3L02DQ_REG_CTRL_1_AXES_X_ENABLE |
- LIS3L02DQ_REG_CTRL_1_AXES_Y_ENABLE |
- LIS3L02DQ_REG_CTRL_1_AXES_Z_ENABLE;
-
- ret = lis3l02dq_spi_write_reg_8(indio_dev,
- LIS3L02DQ_REG_CTRL_1_ADDR,
- t);
-
-error_ret:
- return ret;
-}
-
-static const struct iio_buffer_setup_ops lis3l02dq_buffer_setup_ops = {
- .postenable = &lis3l02dq_buffer_postenable,
- .predisable = &lis3l02dq_buffer_predisable,
-};
-
-int lis3l02dq_configure_buffer(struct iio_dev *indio_dev)
-{
- int ret;
- struct iio_buffer *buffer;
-
- buffer = iio_kfifo_allocate();
- if (!buffer)
- return -ENOMEM;
-
- iio_device_attach_buffer(indio_dev, buffer);
-
- buffer->scan_timestamp = true;
- indio_dev->setup_ops = &lis3l02dq_buffer_setup_ops;
-
- /* Functions are NULL as we set handler below */
- indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
- &lis3l02dq_trigger_handler,
- 0,
- indio_dev,
- "lis3l02dq_consumer%d",
- indio_dev->id);
-
- if (!indio_dev->pollfunc) {
- ret = -ENOMEM;
- goto error_iio_sw_rb_free;
- }
-
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
- return 0;
-
-error_iio_sw_rb_free:
- iio_kfifo_free(indio_dev->buffer);
- return ret;
-}
diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
index b3f6dbf8b3a6..b5625f5d5e0e 100644
--- a/drivers/staging/iio/accel/sca3000_core.c
+++ b/drivers/staging/iio/accel/sca3000_core.c
@@ -774,7 +774,7 @@ static irqreturn_t sca3000_event_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
struct sca3000_state *st = iio_priv(indio_dev);
int ret, val;
- s64 last_timestamp = iio_get_time_ns();
+ s64 last_timestamp = iio_get_time_ns(indio_dev);
/*
* Could lead if badly timed to an extra read of status reg,
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
index a06b46cb81ca..2177f1dd2b5d 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -705,7 +705,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
IIO_EV_DIR_RISING,
IIO_EV_TYPE_THRESH,
0, 0, 0),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
else if (((channels[i] >> 11) & 0xFFF) <=
st->cell_threshlow)
iio_push_event(indio_dev,
@@ -715,7 +715,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
IIO_EV_DIR_FALLING,
IIO_EV_TYPE_THRESH,
0, 0, 0),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
} else {
if (((channels[i] >> 11) & 0xFFF) >= st->aux_threshhigh)
iio_push_event(indio_dev,
@@ -724,7 +724,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
else if (((channels[i] >> 11) & 0xFFF) <=
st->aux_threshlow)
iio_push_event(indio_dev,
@@ -733,7 +733,7 @@ static irqreturn_t ad7280_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_FALLING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
}
diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c
index a6f8eb11242c..0572df9aad85 100644
--- a/drivers/staging/iio/adc/ad7606_ring.c
+++ b/drivers/staging/iio/adc/ad7606_ring.c
@@ -77,7 +77,8 @@ static void ad7606_poll_bh_to_ring(struct work_struct *work_s)
goto done;
}
- iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
+ iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_get_time_ns(indio_dev));
done:
gpio_set_value(st->pdata->gpio_convst, 0);
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
index ac3735c7f4a9..5e8115b01011 100644
--- a/drivers/staging/iio/adc/ad7816.c
+++ b/drivers/staging/iio/adc/ad7816.c
@@ -253,7 +253,8 @@ static const struct attribute_group ad7816_attribute_group = {
static irqreturn_t ad7816_event_handler(int irq, void *private)
{
- iio_push_event(private, IIO_EVENT_CODE_AD7816_OTI, iio_get_time_ns());
+ iio_push_event(private, IIO_EVENT_CODE_AD7816_OTI,
+ iio_get_time_ns((struct iio_dev *)private));
return IRQ_HANDLED;
}
diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
index a10e7d8e6002..3faffe59c933 100644
--- a/drivers/staging/iio/addac/adt7316.c
+++ b/drivers/staging/iio/addac/adt7316.c
@@ -1752,7 +1752,7 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
if ((chip->id & ID_FAMILY_MASK) != ID_ADT75XX)
stat1 &= 0x1F;
- time = iio_get_time_ns();
+ time = iio_get_time_ns(indio_dev);
if (stat1 & BIT(0))
iio_push_event(indio_dev,
IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
@@ -1804,7 +1804,7 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
0,
IIO_EV_TYPE_THRESH,
IIO_EV_DIR_RISING),
- iio_get_time_ns());
+ iio_get_time_ns(indio_dev));
}
return IRQ_HANDLED;
diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
index f6b9a10326ea..5578a077fcfb 100644
--- a/drivers/staging/iio/cdc/ad7150.c
+++ b/drivers/staging/iio/cdc/ad7150.c
@@ -493,7 +493,7 @@ static irqreturn_t ad7150_event_handler(int irq, void *private)
struct iio_dev *indio_dev = private;
struct ad7150_chip_info *chip = iio_priv(indio_dev);
u8 int_status;
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
int ret;
ret = i2c_smbus_read_byte_data(chip->client, AD7150_STATUS);
diff --git a/drivers/staging/iio/light/tsl2x7x_core.c b/drivers/staging/iio/light/tsl2x7x_core.c
index d553c8e18fcc..ea15bc1c300c 100644
--- a/drivers/staging/iio/light/tsl2x7x_core.c
+++ b/drivers/staging/iio/light/tsl2x7x_core.c
@@ -1554,7 +1554,7 @@ static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
{
struct iio_dev *indio_dev = private;
struct tsl2X7X_chip *chip = iio_priv(indio_dev);
- s64 timestamp = iio_get_time_ns();
+ s64 timestamp = iio_get_time_ns(indio_dev);
int ret;
u8 value;
diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h
index 28052cddaa03..228bd44efa4c 100644
--- a/include/linux/iio/common/st_sensors.h
+++ b/include/linux/iio/common/st_sensors.h
@@ -223,6 +223,7 @@ struct st_sensor_settings {
* @get_irq_data_ready: Function to get the IRQ used for data ready signal.
* @tf: Transfer function structure used by I/O operations.
* @tb: Transfer buffers and mutex used by I/O operations.
+ * @edge_irq: the IRQ triggers on edges and need special handling.
* @hw_irq_trigger: if we're using the hardware interrupt on the sensor.
* @hw_timestamp: Latest timestamp from the interrupt handler, when in use.
*/
@@ -250,6 +251,7 @@ struct st_sensor_data {
const struct st_sensor_transfer_function *tf;
struct st_sensor_transfer_buffer tb;
+ bool edge_irq;
bool hw_irq_trigger;
s64 hw_timestamp;
};
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 7c29cb0124ae..854e2dad1e0d 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -312,13 +312,8 @@ static inline bool iio_channel_has_info(const struct iio_chan_spec *chan,
}, \
}
-/**
- * iio_get_time_ns() - utility function to get a time stamp for events etc
- **/
-static inline s64 iio_get_time_ns(void)
-{
- return ktime_get_real_ns();
-}
+s64 iio_get_time_ns(const struct iio_dev *indio_dev);
+unsigned int iio_get_time_res(const struct iio_dev *indio_dev);
/* Device operating modes */
#define INDIO_DIRECT_MODE 0x01
@@ -497,6 +492,7 @@ struct iio_buffer_setup_ops {
* @chan_attr_group: [INTERN] group for all attrs in base directory
* @name: [DRIVER] name of the device.
* @info: [DRIVER] callbacks and constant info from driver
+ * @clock_id: [INTERN] timestamping clock posix identifier
* @info_exist_lock: [INTERN] lock to prevent use during removal
* @setup_ops: [DRIVER] callbacks to call before and after buffer
* enable/disable
@@ -537,6 +533,7 @@ struct iio_dev {
struct attribute_group chan_attr_group;
const char *name;
const struct iio_info *info;
+ clockid_t clock_id;
struct mutex info_exist_lock;
const struct iio_buffer_setup_ops *setup_ops;
struct cdev chrdev;
@@ -565,7 +562,7 @@ extern struct bus_type iio_bus_type;
/**
* iio_device_put() - reference counted deallocation of struct device
- * @indio_dev: IIO device structure containing the device
+ * @indio_dev: IIO device structure containing the device
**/
static inline void iio_device_put(struct iio_dev *indio_dev)
{
@@ -573,6 +570,15 @@ static inline void iio_device_put(struct iio_dev *indio_dev)
put_device(&indio_dev->dev);
}
+/**
+ * iio_device_get_clock() - Retrieve current timestamping clock for the device
+ * @indio_dev: IIO device structure containing the device
+ */
+static inline clockid_t iio_device_get_clock(const struct iio_dev *indio_dev)
+{
+ return indio_dev->clock_id;
+}
+
/**
* dev_to_iio_dev() - Get IIO device struct from a device struct
* @dev: The device embedded in the IIO device
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 479d25cd3d4f..255e225393ac 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -2186,6 +2186,7 @@ struct timespec64 get_monotonic_coarse64(void)
return now;
}
+EXPORT_SYMBOL(get_monotonic_coarse64);
/*
* Must hold jiffies_lock