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ARM: H1940: Convert h1940 bluetooth driver to rfkill

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Better using standard interfaces to enable/disable bluetooth

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
arnaud.patard@rtp-net.org 2009-11-17 14:54:59 +01:00 committed by Ben Dooks
parent 22e649ff2e
commit 1a71e4ade1
3 changed files with 52 additions and 47 deletions
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8
arch/arm/mach-s3c2410/Kconfig
View file

@ -81,6 +81,14 @@ config ARCH_H1940
help
Say Y here if you are using the HP IPAQ H1940
config H1940BT
tristate "Control the state of H1940 bluetooth chip"
depends on ARCH_H1940
select RFKILL
help
This is a simple driver that is able to control
the state of built in bluetooth chip on h1940.
config PM_H1940
bool
help

3
arch/arm/mach-s3c2410/Makefile
View file

@ -21,7 +21,8 @@ obj-$(CONFIG_S3C2410_PLLTABLE) += pll.o
# Machine support
obj-$(CONFIG_ARCH_SMDK2410) += mach-smdk2410.o
obj-$(CONFIG_ARCH_H1940) += mach-h1940.o h1940-bluetooth.o
obj-$(CONFIG_ARCH_H1940) += mach-h1940.o
obj-$(CONFIG_H1940BT) += h1940-bluetooth.o
obj-$(CONFIG_PM_H1940) += pm-h1940.o
obj-$(CONFIG_MACH_N30) += mach-n30.o
obj-$(CONFIG_ARCH_BAST) += mach-bast.o usb-simtec.o

88
arch/arm/mach-s3c2410/h1940-bluetooth.c
View file

@ -17,6 +17,7 @@
#include <linux/ctype.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/rfkill.h>
#include <mach/regs-gpio.h>
#include <mach/hardware.h>
@ -24,21 +25,10 @@
#define DRV_NAME "h1940-bt"
#ifdef CONFIG_LEDS_H1940
DEFINE_LED_TRIGGER(bt_led_trigger);
#endif
static int state;
/* Bluetooth control */
static void h1940bt_enable(int on)
{
if (on) {
#ifdef CONFIG_LEDS_H1940
/* flashing Blue */
led_trigger_event(bt_led_trigger, LED_HALF);
#endif
/* Power on the chip */
h1940_latch_control(0, H1940_LATCH_BLUETOOTH_POWER);
/* Reset the chip */
@ -46,48 +36,31 @@ static void h1940bt_enable(int on)
s3c2410_gpio_setpin(S3C2410_GPH(1), 1);
mdelay(10);
s3c2410_gpio_setpin(S3C2410_GPH(1), 0);
state = 1;
}
else {
#ifdef CONFIG_LEDS_H1940
led_trigger_event(bt_led_trigger, 0);
#endif
s3c2410_gpio_setpin(S3C2410_GPH(1), 1);
mdelay(10);
s3c2410_gpio_setpin(S3C2410_GPH(1), 0);
mdelay(10);
h1940_latch_control(H1940_LATCH_BLUETOOTH_POWER, 0);
state = 0;
}
}
static ssize_t h1940bt_show(struct device *dev, struct device_attribute *attr, char *buf)
static int h1940bt_set_block(void *data, bool blocked)
{
return snprintf(buf, PAGE_SIZE, "%d\n", state);
h1940bt_enable(!blocked);
return 0;
}
static ssize_t h1940bt_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
int new_state;
char *endp;
new_state = simple_strtoul(buf, &endp, 0);
if (*endp && !isspace(*endp))
return -EINVAL;
h1940bt_enable(new_state);
return count;
}
static DEVICE_ATTR(enable, 0644,
h1940bt_show,
h1940bt_store);
static const struct rfkill_ops h1940bt_rfkill_ops = {
.set_block = h1940bt_set_block,
};
static int __init h1940bt_probe(struct platform_device *pdev)
{
struct rfkill *rfk;
int ret = 0;
/* Configures BT serial port GPIOs */
s3c2410_gpio_cfgpin(S3C2410_GPH(0), S3C2410_GPH0_nCTS0);
s3c2410_gpio_pullup(S3C2410_GPH(0), 1);
@ -98,21 +71,44 @@ static int __init h1940bt_probe(struct platform_device *pdev)
s3c2410_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0);
s3c2410_gpio_pullup(S3C2410_GPH(3), 1);
#ifdef CONFIG_LEDS_H1940
led_trigger_register_simple("h1940-bluetooth", &bt_led_trigger);
#endif
/* disable BT by default */
h1940bt_enable(0);
rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
&h1940bt_rfkill_ops, NULL);
if (!rfk) {
ret = -ENOMEM;
goto err_rfk_alloc;
}
return device_create_file(&pdev->dev, &dev_attr_enable);
rfkill_set_led_trigger_name(rfk, "h1940-bluetooth");
ret = rfkill_register(rfk);
if (ret)
goto err_rfkill;
platform_set_drvdata(pdev, rfk);
return 0;
err_rfkill:
rfkill_destroy(rfk);
err_rfk_alloc:
return ret;
}
static int h1940bt_remove(struct platform_device *pdev)
{
#ifdef CONFIG_LEDS_H1940
led_trigger_unregister_simple(bt_led_trigger);
#endif
struct rfkill *rfk = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
if (rfk) {
rfkill_unregister(rfk);
rfkill_destroy(rfk);
}
rfk = NULL;
h1940bt_enable(0);
return 0;
}