| Message ID | 20240503143327.RFT.v2.46.I6a51b36831a5c7b2b82bccf8c550cf0d076aa541@changeid (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/panel: Remove most store/double-check of prepared/enabled state | expand |
On Fri, May 3, 2024 at 11:38 PM Douglas Anderson <dianders@chromium.org> wrote: > As talked about in commit d2aacaf07395 ("drm/panel: Check for already > prepared/enabled in drm_panel"), we want to remove needless code from > panel drivers that was storing and double-checking the > prepared/enabled state. Even if someone was relying on the > double-check before, that double-check is now in the core and not > needed in individual drivers. > > The acx565akm seems to do some unique stuff with the "enabled" > state. Specifically: > 1. It seems to detect the enabled state based on how the bootloader > left the panel. > 2. It uses the enabled state to prevent certain sysfs files from > accessing a disabled panel. > > We'll leave the "enabled" state tracking for this. However, we can at > least get rid of the double-check when trying to disable. > > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Cc: Sebastian Reichel <sebastian.reichel@collabora.com> > Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Yours, Linus Walleij
diff --git a/drivers/gpu/drm/panel/panel-sony-acx565akm.c b/drivers/gpu/drm/panel/panel-sony-acx565akm.c index 3d6a286056a0..a9a545a56404 100644 --- a/drivers/gpu/drm/panel/panel-sony-acx565akm.c +++ b/drivers/gpu/drm/panel/panel-sony-acx565akm.c @@ -454,9 +454,6 @@ static int acx565akm_power_on(struct acx565akm_panel *lcd) static void acx565akm_power_off(struct acx565akm_panel *lcd) { - if (!lcd->enabled) - return; - acx565akm_set_display_state(lcd, 0); acx565akm_set_sleep_mode(lcd, 1); lcd->enabled = false;
As talked about in commit d2aacaf07395 ("drm/panel: Check for already prepared/enabled in drm_panel"), we want to remove needless code from panel drivers that was storing and double-checking the prepared/enabled state. Even if someone was relying on the double-check before, that double-check is now in the core and not needed in individual drivers. The acx565akm seems to do some unique stuff with the "enabled" state. Specifically: 1. It seems to detect the enabled state based on how the bootloader left the panel. 2. It uses the enabled state to prevent certain sysfs files from accessing a disabled panel. We'll leave the "enabled" state tracking for this. However, we can at least get rid of the double-check when trying to disable. Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> --- Changes in v2: - Split removal of prepared/enabled from handling of remove/shutdown. drivers/gpu/drm/panel/panel-sony-acx565akm.c | 3 --- 1 file changed, 3 deletions(-)