This patch modifies dev-backlight helpers to get private data using
container_of instead of abusing platform_data field of PWM device.
Signed-off-by: Tomasz Figa <tomasz.f...@gmail.com>
---
arch/arm/plat-samsung/dev-backlight.c | 51 ++++++++++++++++++++---------------
1 file changed, 29 insertions(+), 22 deletions(-)
diff --git a/arch/arm/plat-samsung/dev-backlight.c
b/arch/arm/plat-samsung/dev-backlight.c
index 5f197dc..e467a01 100644
--- a/arch/arm/plat-samsung/dev-backlight.c
+++ b/arch/arm/plat-samsung/dev-backlight.c
@@ -20,13 +20,18 @@
#include <plat/gpio-cfg.h>
#include <plat/backlight.h>
+struct samsung_bl_drvdata {
+ struct platform_pwm_backlight_data plat_data;
+ struct samsung_bl_gpio_info *gpio_info;
+};
+
static int samsung_bl_init(struct device *dev)
{
int ret = 0;
- struct platform_device *timer_dev =
- container_of(dev->parent, struct platform_device, dev);
- struct samsung_bl_gpio_info *bl_gpio_info =
- timer_dev->dev.platform_data;
+ struct platform_pwm_backlight_data *pdata = dev->platform_data;
+ struct samsung_bl_drvdata *drvdata = container_of(pdata,
+ struct samsung_bl_drvdata, plat_data);
+ struct samsung_bl_gpio_info *bl_gpio_info = drvdata->gpio_info;
ret = gpio_request(bl_gpio_info->no, "Backlight");
if (ret) {
@@ -42,10 +47,10 @@ static int samsung_bl_init(struct device *dev)
static void samsung_bl_exit(struct device *dev)
{
- struct platform_device *timer_dev =
- container_of(dev->parent, struct platform_device, dev);
- struct samsung_bl_gpio_info *bl_gpio_info =
- timer_dev->dev.platform_data;
+ struct platform_pwm_backlight_data *pdata = dev->platform_data;
+ struct samsung_bl_drvdata *drvdata = container_of(pdata,
+ struct samsung_bl_drvdata, plat_data);
+ struct samsung_bl_gpio_info *bl_gpio_info = drvdata->gpio_info;
s3c_gpio_cfgpin(bl_gpio_info->no, S3C_GPIO_OUTPUT);
gpio_free(bl_gpio_info->no);
@@ -60,12 +65,14 @@ static void samsung_bl_exit(struct device *dev)
* for their specific boards
*/
-static struct platform_pwm_backlight_data samsung_dfl_bl_data __initdata = {
- .max_brightness = 255,
- .dft_brightness = 255,
- .pwm_period_ns = 78770,
- .init = samsung_bl_init,
- .exit = samsung_bl_exit,
+static struct samsung_bl_drvdata samsung_dfl_bl_data __initdata = {
+ .plat_data = {
+ .max_brightness = 255,
+ .dft_brightness = 255,
+ .pwm_period_ns = 78770,
+ .init = samsung_bl_init,
+ .exit = samsung_bl_exit,
+ },
};
static struct platform_device samsung_dfl_bl_device __initdata = {
@@ -82,6 +89,7 @@ void __init samsung_bl_set(struct samsung_bl_gpio_info
*gpio_info,
{
int ret = 0;
struct platform_device *samsung_bl_device;
+ struct samsung_bl_drvdata *samsung_bl_drvdata;
struct platform_pwm_backlight_data *samsung_bl_data;
samsung_bl_device = kmemdup(&samsung_dfl_bl_device,
@@ -91,17 +99,19 @@ void __init samsung_bl_set(struct samsung_bl_gpio_info
*gpio_info,
return;
}
- samsung_bl_data = s3c_set_platdata(&samsung_dfl_bl_data,
- sizeof(struct platform_pwm_backlight_data), samsung_bl_device);
- if (!samsung_bl_data) {
+ samsung_bl_drvdata = kmemdup(&samsung_dfl_bl_data,
+ sizeof(samsung_dfl_bl_data), GFP_KERNEL);
+ if (!samsung_bl_drvdata) {
printk(KERN_ERR "%s: no memory for platform dev\n", __func__);
goto err_data;
}
+ samsung_bl_device->dev.platform_data = &samsung_bl_drvdata->plat_data;
+ samsung_bl_drvdata->gpio_info = gpio_info;
+ samsung_bl_data = &samsung_bl_drvdata->plat_data;
/* Copy board specific data provided by user */
samsung_bl_data->pwm_id = bl_data->pwm_id;
- samsung_bl_device->dev.parent =
- &s3c_device_timer[samsung_bl_data->pwm_id].dev;
+ samsung_bl_device->dev.parent = &samsung_device_pwm.dev;
if (bl_data->max_brightness)
samsung_bl_data->max_brightness = bl_data->max_brightness;
@@ -122,9 +132,6 @@ void __init samsung_bl_set(struct samsung_bl_gpio_info
*gpio_info,
if (bl_data->check_fb)
samsung_bl_data->check_fb = bl_data->check_fb;
- /* Keep the GPIO info for future use */
- s3c_device_timer[samsung_bl_data->pwm_id].dev.platform_data = gpio_info;
-
/* Register the specific PWM timer dev for Backlight control */
ret = platform_device_register(
&s3c_device_timer[samsung_bl_data->pwm_id]);
--
1.8.3.2
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