From 0132267d659107616eb044777f1b0be55381129a Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Wed, 30 Jan 2013 15:19:15 +0900 Subject: pwm-backlight: handle BL_CORE_FBBLANK state According to include/linux/backlight.h, the fb_blank field is to be removed and blank status should preferably be set by setting the BL_CORE_FBBLANK bit of the state field. This patch ensures this condition is also taken into account when updating the backlight state. Signed-off-by: Alexandre Courbot Signed-off-by: Thierry Reding --- drivers/video/backlight/pwm_bl.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 069983ca49f..4af6d1302f1 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -41,10 +41,9 @@ static int pwm_backlight_update_status(struct backlight_device *bl) int brightness = bl->props.brightness; int max = bl->props.max_brightness; - if (bl->props.power != FB_BLANK_UNBLANK) - brightness = 0; - - if (bl->props.fb_blank != FB_BLANK_UNBLANK) + if (bl->props.power != FB_BLANK_UNBLANK || + bl->props.fb_blank != FB_BLANK_UNBLANK || + bl->props.state & BL_CORE_FBBLANK) brightness = 0; if (pb->notify) -- cgit v1.2.3-18-g5258 From 83cfd72669ff708c9d21f214606be785ea8a685c Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 22 Jan 2013 14:39:54 +0100 Subject: pwm_backlight: Validate dft_brightness in main probe function Move the dft_brightness validity check from the DT parsing function to the main probe. In this way we can validate it in case we are booting with or without DT. Signed-off-by: Peter Ujfalusi Signed-off-by: Thierry Reding --- drivers/video/backlight/pwm_bl.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 4af6d1302f1..a71ef4a79ec 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -134,12 +134,6 @@ static int pwm_backlight_parse_dt(struct device *dev, if (ret < 0) return ret; - if (value >= data->max_brightness) { - dev_warn(dev, "invalid default brightness level: %u, using %u\n", - value, data->max_brightness - 1); - value = data->max_brightness - 1; - } - data->dft_brightness = value; data->max_brightness--; } @@ -248,6 +242,13 @@ static int pwm_backlight_probe(struct platform_device *pdev) goto err_alloc; } + if (data->dft_brightness > data->max_brightness) { + dev_warn(&pdev->dev, + "invalid default brightness level: %u, using %u\n", + data->dft_brightness, data->max_brightness); + data->dft_brightness = data->max_brightness; + } + bl->props.brightness = data->dft_brightness; backlight_update_status(bl); -- cgit v1.2.3-18-g5258