Add backlight-boot-off property, so we can keeping the backlight disabled at boot until it is enabled implicitly by a panel driver, or explicitly by userspace Signed-off-by: huang lin <hl at rock-chips.com> --- drivers/video/backlight/pwm_bl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c index 3a145a6..dece351 100644 --- a/drivers/video/backlight/pwm_bl.c +++ b/drivers/video/backlight/pwm_bl.c @@ -319,6 +319,10 @@ static int pwm_backlight_probe(struct platform_device *pdev) } bl->props.brightness = data->dft_brightness; + + if (of_find_property(pdev->dev.of_node, "backlight-boot-off", NULL)) + bl->props.power = FB_BLANK_POWERDOWN; + backlight_update_status(bl); platform_set_drvdata(pdev, bl); -- 1.9.1
