diff options
| author | Matt Wagner <mwagner@nvidia.com> | 2011-07-22 00:13:08 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:48:08 -0800 |
| commit | e806e28f31c46b73ca965954c717af405376ae8e (patch) | |
| tree | c200290c8be995e878209f3b042edb14f0235670 | |
| parent | 8b385bb3ad43910381a48c53c7d5d4e889213dbd (diff) | |
video: backlight: tegra: add callback to tegra_pwm_backlight
tegra-pwm-backlight now has a notify function that enables the
brightness to be passed back to the boardfile where it is modified.
Bug 854820
Original-Change-Id: I1425d801f77987485b58c3cbedae464b5db88444
Reviewed-on: http://git-master/r/42639
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>
Rebase-Id: R156ca05e91b04723146628b1b1abcef31a43795a
| -rw-r--r-- | drivers/video/backlight/tegra_pwm_bl.c | 5 | ||||
| -rw-r--r-- | include/linux/tegra_pwm_bl.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/video/backlight/tegra_pwm_bl.c b/drivers/video/backlight/tegra_pwm_bl.c index 7e7bfe76ee25..f2202d81ca30 100644 --- a/drivers/video/backlight/tegra_pwm_bl.c +++ b/drivers/video/backlight/tegra_pwm_bl.c @@ -25,6 +25,7 @@ struct tegra_pwm_bl_data { struct device *dev; int which_dc; + int (*notify)(struct device *, int brightness); struct tegra_dc_pwm_params params; }; @@ -41,6 +42,9 @@ static int tegra_pwm_backlight_update_status(struct backlight_device *bl) if (bl->props.fb_blank != FB_BLANK_UNBLANK) brightness = 0; + if (tbl->notify) + brightness = tbl->notify(tbl->dev, brightness); + if (brightness > max) dev_err(&bl->dev, "Invalid brightness value: %d max: %d\n", brightness, max); @@ -95,6 +99,7 @@ static int tegra_pwm_backlight_probe(struct platform_device *pdev) tbl->dev = &pdev->dev; tbl->which_dc = data->which_dc; + tbl->notify = data->notify; tbl->params.which_pwm = data->which_pwm; tbl->params.gpio_conf_to_sfio = data->gpio_conf_to_sfio; tbl->params.switch_to_sfio = data->switch_to_sfio; diff --git a/include/linux/tegra_pwm_bl.h b/include/linux/tegra_pwm_bl.h index ee924842bf84..68fecb522cfc 100644 --- a/include/linux/tegra_pwm_bl.h +++ b/include/linux/tegra_pwm_bl.h @@ -22,6 +22,7 @@ struct platform_tegra_pwm_backlight_data { unsigned int period; unsigned int clk_div; unsigned int clk_select; + int (*notify)(struct device *dev, int brightness); }; #endif /* TERGA_PWM_BL_H */ |