This started with work on the removal of backlight_properties' deprecated fb_blank field, much of which can be taken care of by using helper functions provided by backlight.h instead of directly accessing fields in backlight_properties. This patch series doesn't involve fb_blank, but it still seems useful to use helper functions where appropriate.
Instead of retrieving the backlight brightness in struct backlight_properties manually, and then checking whether the backlight should be on at all, use backlight_get_brightness() which does all this and insulates this from future changes.
Signed-off-by: Stephen Kitt steve@sk2.org Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Kieran Bingham kieran.bingham+renesas@ideasonboard.com Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org --- Changes since v1: clarified commit message, this doesn't touch fb_blank --- drivers/gpu/drm/shmobile/shmob_drm_backlight.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c index f6628a5ee95f..794573badfe8 100644 --- a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c +++ b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c @@ -18,11 +18,7 @@ static int shmob_drm_backlight_update(struct backlight_device *bdev) struct shmob_drm_connector *scon = bl_get_data(bdev); struct shmob_drm_device *sdev = scon->connector.dev->dev_private; const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight; - int brightness = bdev->props.brightness; - - if (bdev->props.power != FB_BLANK_UNBLANK || - bdev->props.state & BL_CORE_SUSPENDED) - brightness = 0; + int brightness = backlight_get_brightness(bdev);
return bdata->set_brightness(brightness); }
base-commit: f2906aa863381afb0015a9eb7fefad885d4e5a56
Hi Stephen,
Thank you for the patch.
On Thu, Jun 16, 2022 at 07:08:21PM +0200, Stephen Kitt wrote:
This started with work on the removal of backlight_properties' deprecated fb_blank field, much of which can be taken care of by using helper functions provided by backlight.h instead of directly accessing fields in backlight_properties. This patch series doesn't involve fb_blank, but it still seems useful to use helper functions where appropriate.
Instead of retrieving the backlight brightness in struct backlight_properties manually, and then checking whether the backlight should be on at all, use backlight_get_brightness() which does all this and insulates this from future changes.
Signed-off-by: Stephen Kitt steve@sk2.org Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Kieran Bingham kieran.bingham+renesas@ideasonboard.com Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com
Changes since v1: clarified commit message, this doesn't touch fb_blank
drivers/gpu/drm/shmobile/shmob_drm_backlight.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c index f6628a5ee95f..794573badfe8 100644 --- a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c +++ b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c @@ -18,11 +18,7 @@ static int shmob_drm_backlight_update(struct backlight_device *bdev) struct shmob_drm_connector *scon = bl_get_data(bdev); struct shmob_drm_device *sdev = scon->connector.dev->dev_private; const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight;
- int brightness = bdev->props.brightness;
- if (bdev->props.power != FB_BLANK_UNBLANK ||
bdev->props.state & BL_CORE_SUSPENDED)brightness = 0;
int brightness = backlight_get_brightness(bdev);
return bdata->set_brightness(brightness);
}
base-commit: f2906aa863381afb0015a9eb7fefad885d4e5a56
Quoting Stephen Kitt (2022-06-16 18:08:21)
This started with work on the removal of backlight_properties' deprecated fb_blank field, much of which can be taken care of by using helper functions provided by backlight.h instead of directly accessing fields in backlight_properties. This patch series doesn't involve fb_blank, but it still seems useful to use helper functions where appropriate.
Instead of retrieving the backlight brightness in struct backlight_properties manually, and then checking whether the backlight should be on at all, use backlight_get_brightness() which does all this and insulates this from future changes.
Signed-off-by: Stephen Kitt steve@sk2.org Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Kieran Bingham kieran.bingham+renesas@ideasonboard.com
Hi Stephen,
This looks reasonable to me too.
Reviewed-by: Kieran Bingham kieran.bingham+renesas@ideasonboard.com
Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org
Changes since v1: clarified commit message, this doesn't touch fb_blank
drivers/gpu/drm/shmobile/shmob_drm_backlight.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c index f6628a5ee95f..794573badfe8 100644 --- a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c +++ b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c @@ -18,11 +18,7 @@ static int shmob_drm_backlight_update(struct backlight_device *bdev) struct shmob_drm_connector *scon = bl_get_data(bdev); struct shmob_drm_device *sdev = scon->connector.dev->dev_private; const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight;
int brightness = bdev->props.brightness;if (bdev->props.power != FB_BLANK_UNBLANK ||bdev->props.state & BL_CORE_SUSPENDED)brightness = 0;
int brightness = backlight_get_brightness(bdev); return bdata->set_brightness(brightness);}
base-commit: f2906aa863381afb0015a9eb7fefad885d4e5a56
2.30.2
dri-devel@lists.freedesktop.org
-
Kieran Bingham -
Laurent Pinchart -
Stephen Kitt