diff options
| author | Min-wuk Lee <mlee@nvidia.com> | 2013-07-19 19:21:02 +0900 |
|---|---|---|
| committer | Gabby Lee <galee@nvidia.com> | 2013-07-22 20:02:09 -0700 |
| commit | e1fa47428e164545237ba30a460308b146263ccd (patch) | |
| tree | 01cdf2f3bd4539410dfcac9f12980a6bc5ab52fd /include | |
| parent | 2f00ddb17b2caa2d2bd92af9f0de10d20fb6c987 (diff) | |
video: backlight: pwm_bl: device tree support for pwm_bl
Add device tree support for pwm based backlight driver.
Values for platform data required by pwm backlight driver
are parsed from device tree properties, directly.
For function pointers in platform data, separate devdata
generating driver is prepared. In order to construct functions,
it also parses values from different device tree node.
Backlight output array to make linear backlight response are
parsed in separate devdata generating driver.
Bug 1240921
Change-Id: Ie2b20efa368a0caa3a8a4d316482a2153cdaadc1
Signed-off-by: Min-wuk Lee <mlee@nvidia.com>
Reviewed-on: http://git-master/r/251313
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Gabby Lee <galee@nvidia.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pwm_backlight.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/pwm_backlight.h b/include/linux/pwm_backlight.h index 2fc86de2a95f..633ee4b90a5c 100644 --- a/include/linux/pwm_backlight.h +++ b/include/linux/pwm_backlight.h @@ -20,6 +20,7 @@ #define __LINUX_PWM_BACKLIGHT_H #include <linux/backlight.h> +#include <linux/platform_device.h> enum tegra_pwm_bl_edp_states { TEGRA_PWM_BL_EDP_NEG_3, @@ -33,6 +34,11 @@ enum tegra_pwm_bl_edp_states { struct platform_pwm_backlight_data { int pwm_id; + /* + * different brightness can be set + * between charging mode and normal mode + */ + bool is_charged; unsigned int max_brightness; unsigned int dft_brightness; unsigned int lth_brightness; @@ -48,4 +54,17 @@ struct platform_pwm_backlight_data { int (*check_fb)(struct device *dev, struct fb_info *info); }; +struct of_tegra_pwm_bl_devdata { + int (*init)(struct device *dev); + int (*notify)(struct device *dev, int brightness); + void (*notify_after)(struct device *dev, int brightness); + void (*exit)(struct device *dev); + int (*check_fb)(struct device *dev, struct fb_info *info); +}; + +struct platform_pwm_backlight_data + *of_pwm_bl_parse_platform_data(struct platform_device *ndev); + +void pwm_bl_devdata_set_callback(struct device*(*func) + (struct device_node *)); #endif |