diff mbox series

[RFT,v2,46/48] drm/panel: sony-acx565akm: Don't double-check enabled state in disable

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

Commit Message

Doug Anderson May 3, 2024, 9:33 p.m. UTC
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(-)

Comments

Linus Walleij May 6, 2024, 6:49 a.m. UTC | #1
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 mbox series

Patch

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;