leds: leds-mc13783: Add MC34708 LED support
This patch adds support for two LEDs on MC34708 PMIC. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Bryan Wu <cooloney@gmail.com>
This commit is contained in:
Alexander Shiyan
Bryan Wu
parent
8d82fef8bb
commit
a59ce6584d
3 changed files with 55 additions and 51 deletions
|
|
@ -416,7 +416,7 @@ config LEDS_MC13783
|
|||
depends on MFD_MC13XXX
|
||||
help
|
||||
This option enable support for on-chip LED drivers found
|
||||
on Freescale Semiconductor MC13783/MC13892 PMIC.
|
||||
on Freescale Semiconductor MC13783/MC13892/MC34708 PMIC.
|
||||
|
||||
config LEDS_NS2
|
||||
tristate "LED support for Network Space v2 GPIO LEDs"
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
* LEDs driver for Freescale MC13783/MC13892
|
||||
* LEDs driver for Freescale MC13783/MC13892/MC34708
|
||||
*
|
||||
* Copyright (C) 2010 Philippe Rétornaz
|
||||
*
|
||||
|
|
@ -23,23 +23,23 @@
|
|||
#include <linux/workqueue.h>
|
||||
#include <linux/mfd/mc13xxx.h>
|
||||
|
||||
#define MC13XXX_REG_LED_CONTROL(x) (51 + (x))
|
||||
|
||||
struct mc13xxx_led_devtype {
|
||||
int led_min;
|
||||
int led_max;
|
||||
int num_regs;
|
||||
u32 ledctrl_base;
|
||||
};
|
||||
|
||||
struct mc13xxx_led {
|
||||
struct led_classdev cdev;
|
||||
struct work_struct work;
|
||||
struct mc13xxx *master;
|
||||
enum led_brightness new_brightness;
|
||||
int id;
|
||||
struct mc13xxx_leds *leds;
|
||||
};
|
||||
|
||||
struct mc13xxx_leds {
|
||||
struct mc13xxx *master;
|
||||
struct mc13xxx_led_devtype *devtype;
|
||||
int num_leds;
|
||||
struct mc13xxx_led led[0];
|
||||
|
|
@ -48,24 +48,15 @@ struct mc13xxx_leds {
|
|||
static void mc13xxx_led_work(struct work_struct *work)
|
||||
{
|
||||
struct mc13xxx_led *led = container_of(work, struct mc13xxx_led, work);
|
||||
int reg, mask, value, bank, off, shift;
|
||||
struct mc13xxx_leds *leds = led->leds;
|
||||
unsigned int reg, mask, value, bank, off, shift;
|
||||
|
||||
switch (led->id) {
|
||||
case MC13783_LED_MD:
|
||||
reg = MC13XXX_REG_LED_CONTROL(2);
|
||||
shift = 9;
|
||||
mask = 0x0f;
|
||||
value = led->new_brightness >> 4;
|
||||
break;
|
||||
case MC13783_LED_AD:
|
||||
reg = MC13XXX_REG_LED_CONTROL(2);
|
||||
shift = 13;
|
||||
mask = 0x0f;
|
||||
value = led->new_brightness >> 4;
|
||||
break;
|
||||
case MC13783_LED_KP:
|
||||
reg = MC13XXX_REG_LED_CONTROL(2);
|
||||
shift = 17;
|
||||
reg = 2;
|
||||
shift = 9 + (led->id - MC13783_LED_MD) * 4;
|
||||
mask = 0x0f;
|
||||
value = led->new_brightness >> 4;
|
||||
break;
|
||||
|
|
@ -80,26 +71,16 @@ static void mc13xxx_led_work(struct work_struct *work)
|
|||
case MC13783_LED_B3:
|
||||
off = led->id - MC13783_LED_R1;
|
||||
bank = off / 3;
|
||||
reg = MC13XXX_REG_LED_CONTROL(3) + bank;
|
||||
reg = 3 + bank;
|
||||
shift = (off - bank * 3) * 5 + 6;
|
||||
value = led->new_brightness >> 3;
|
||||
mask = 0x1f;
|
||||
break;
|
||||
case MC13892_LED_MD:
|
||||
reg = MC13XXX_REG_LED_CONTROL(0);
|
||||
shift = 3;
|
||||
mask = 0x3f;
|
||||
value = led->new_brightness >> 2;
|
||||
break;
|
||||
case MC13892_LED_AD:
|
||||
reg = MC13XXX_REG_LED_CONTROL(0);
|
||||
shift = 15;
|
||||
mask = 0x3f;
|
||||
value = led->new_brightness >> 2;
|
||||
break;
|
||||
case MC13892_LED_KP:
|
||||
reg = MC13XXX_REG_LED_CONTROL(1);
|
||||
shift = 3;
|
||||
reg = (led->id - MC13892_LED_MD) / 2;
|
||||
shift = 3 + (led->id - MC13892_LED_MD) * 12;
|
||||
mask = 0x3f;
|
||||
value = led->new_brightness >> 2;
|
||||
break;
|
||||
|
|
@ -108,16 +89,24 @@ static void mc13xxx_led_work(struct work_struct *work)
|
|||
case MC13892_LED_B:
|
||||
off = led->id - MC13892_LED_R;
|
||||
bank = off / 2;
|
||||
reg = MC13XXX_REG_LED_CONTROL(2) + bank;
|
||||
reg = 2 + bank;
|
||||
shift = (off - bank * 2) * 12 + 3;
|
||||
value = led->new_brightness >> 2;
|
||||
mask = 0x3f;
|
||||
break;
|
||||
case MC34708_LED_R:
|
||||
case MC34708_LED_G:
|
||||
reg = 0;
|
||||
shift = 3 + (led->id - MC34708_LED_R) * 12;
|
||||
value = led->new_brightness >> 2;
|
||||
mask = 0x3f;
|
||||
break;
|
||||
default:
|
||||
BUG();
|
||||
}
|
||||
|
||||
mc13xxx_reg_rmw(led->master, reg, mask << shift, value << shift);
|
||||
mc13xxx_reg_rmw(leds->master, leds->devtype->ledctrl_base + reg,
|
||||
mask << shift, value << shift);
|
||||
}
|
||||
|
||||
static void mc13xxx_led_set(struct led_classdev *led_cdev,
|
||||
|
|
@ -132,16 +121,17 @@ static void mc13xxx_led_set(struct led_classdev *led_cdev,
|
|||
|
||||
static int __init mc13xxx_led_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct mc13xxx_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
|
||||
struct mc13xxx *mcdev = dev_get_drvdata(pdev->dev.parent);
|
||||
struct device *dev = &pdev->dev;
|
||||
struct mc13xxx_leds_platform_data *pdata = dev_get_platdata(dev);
|
||||
struct mc13xxx *mcdev = dev_get_drvdata(dev->parent);
|
||||
struct mc13xxx_led_devtype *devtype =
|
||||
(struct mc13xxx_led_devtype *)pdev->id_entry->driver_data;
|
||||
struct mc13xxx_leds *leds;
|
||||
int i, id, num_leds, ret = -ENODATA;
|
||||
u32 reg, init_led = 0;
|
||||
u32 init_led = 0;
|
||||
|
||||
if (!pdata) {
|
||||
dev_err(&pdev->dev, "Missing platform data\n");
|
||||
dev_err(dev, "Missing platform data\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
|
|
@ -149,23 +139,23 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev)
|
|||
|
||||
if ((num_leds < 1) ||
|
||||
(num_leds > (devtype->led_max - devtype->led_min + 1))) {
|
||||
dev_err(&pdev->dev, "Invalid LED count %d\n", num_leds);
|
||||
dev_err(dev, "Invalid LED count %d\n", num_leds);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
leds = devm_kzalloc(&pdev->dev, num_leds * sizeof(struct mc13xxx_led) +
|
||||
leds = devm_kzalloc(dev, num_leds * sizeof(struct mc13xxx_led) +
|
||||
sizeof(struct mc13xxx_leds), GFP_KERNEL);
|
||||
if (!leds)
|
||||
return -ENOMEM;
|
||||
|
||||
leds->devtype = devtype;
|
||||
leds->num_leds = num_leds;
|
||||
leds->master = mcdev;
|
||||
platform_set_drvdata(pdev, leds);
|
||||
|
||||
for (i = 0; i < devtype->num_regs; i++) {
|
||||
reg = pdata->led_control[i];
|
||||
WARN_ON(reg >= (1 << 24));
|
||||
ret = mc13xxx_reg_write(mcdev, MC13XXX_REG_LED_CONTROL(i), reg);
|
||||
ret = mc13xxx_reg_write(mcdev, leds->devtype->ledctrl_base + i,
|
||||
pdata->led_control[i]);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -180,19 +170,18 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev)
|
|||
trig = pdata->led[i].default_trigger;
|
||||
|
||||
if ((id > devtype->led_max) || (id < devtype->led_min)) {
|
||||
dev_err(&pdev->dev, "Invalid ID %i\n", id);
|
||||
dev_err(dev, "Invalid ID %i\n", id);
|
||||
break;
|
||||
}
|
||||
|
||||
if (init_led & (1 << id)) {
|
||||
dev_warn(&pdev->dev,
|
||||
"LED %i already initialized\n", id);
|
||||
dev_warn(dev, "LED %i already initialized\n", id);
|
||||
break;
|
||||
}
|
||||
|
||||
init_led |= 1 << id;
|
||||
leds->led[i].id = id;
|
||||
leds->led[i].master = mcdev;
|
||||
leds->led[i].leds = leds;
|
||||
leds->led[i].cdev.name = name;
|
||||
leds->led[i].cdev.default_trigger = trig;
|
||||
leds->led[i].cdev.brightness_set = mc13xxx_led_set;
|
||||
|
|
@ -200,10 +189,9 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev)
|
|||
|
||||
INIT_WORK(&leds->led[i].work, mc13xxx_led_work);
|
||||
|
||||
ret = led_classdev_register(pdev->dev.parent,
|
||||
&leds->led[i].cdev);
|
||||
ret = led_classdev_register(dev->parent, &leds->led[i].cdev);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Failed to register LED %i\n", id);
|
||||
dev_err(dev, "Failed to register LED %i\n", id);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
|
@ -219,8 +207,8 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev)
|
|||
|
||||
static int mc13xxx_led_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct mc13xxx *mcdev = dev_get_drvdata(pdev->dev.parent);
|
||||
struct mc13xxx_leds *leds = platform_get_drvdata(pdev);
|
||||
struct mc13xxx *mcdev = leds->master;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < leds->num_leds; i++) {
|
||||
|
|
@ -229,7 +217,7 @@ static int mc13xxx_led_remove(struct platform_device *pdev)
|
|||
}
|
||||
|
||||
for (i = 0; i < leds->devtype->num_regs; i++)
|
||||
mc13xxx_reg_write(mcdev, MC13XXX_REG_LED_CONTROL(i), 0);
|
||||
mc13xxx_reg_write(mcdev, leds->devtype->ledctrl_base + i, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -238,17 +226,27 @@ static const struct mc13xxx_led_devtype mc13783_led_devtype = {
|
|||
.led_min = MC13783_LED_MD,
|
||||
.led_max = MC13783_LED_B3,
|
||||
.num_regs = 6,
|
||||
.ledctrl_base = 51,
|
||||
};
|
||||
|
||||
static const struct mc13xxx_led_devtype mc13892_led_devtype = {
|
||||
.led_min = MC13892_LED_MD,
|
||||
.led_max = MC13892_LED_B,
|
||||
.num_regs = 4,
|
||||
.ledctrl_base = 51,
|
||||
};
|
||||
|
||||
static const struct mc13xxx_led_devtype mc34708_led_devtype = {
|
||||
.led_min = MC34708_LED_R,
|
||||
.led_max = MC34708_LED_G,
|
||||
.num_regs = 1,
|
||||
.ledctrl_base = 54,
|
||||
};
|
||||
|
||||
static const struct platform_device_id mc13xxx_led_id_table[] = {
|
||||
{ "mc13783-led", (kernel_ulong_t)&mc13783_led_devtype, },
|
||||
{ "mc13892-led", (kernel_ulong_t)&mc13892_led_devtype, },
|
||||
{ "mc34708-led", (kernel_ulong_t)&mc34708_led_devtype, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, mc13xxx_led_id_table);
|
||||
|
|
|
|||
|
|
@ -104,6 +104,9 @@ enum {
|
|||
MC13892_LED_R,
|
||||
MC13892_LED_G,
|
||||
MC13892_LED_B,
|
||||
/* MC34708 LED IDs */
|
||||
MC34708_LED_R,
|
||||
MC34708_LED_G,
|
||||
};
|
||||
|
||||
struct mc13xxx_led_platform_data {
|
||||
|
|
@ -163,6 +166,9 @@ struct mc13xxx_leds_platform_data {
|
|||
#define MC13892_LED_C2_CURRENT_G(x) (((x) & 0x7) << 21)
|
||||
/* MC13892 LED Control 3 */
|
||||
#define MC13892_LED_C3_CURRENT_B(x) (((x) & 0x7) << 9)
|
||||
/* MC34708 LED Control 0 */
|
||||
#define MC34708_LED_C0_CURRENT_R(x) (((x) & 0x3) << 9)
|
||||
#define MC34708_LED_C0_CURRENT_G(x) (((x) & 0x3) << 21)
|
||||
u32 led_control[MAX_LED_CONTROL_REGS];
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue