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Subject[PATCH] panel-innolux: set display off in innolux_panel_unprepare
Date
Move mipi_dsi_dcs_set_display_off() from innolux_panel_disable()
to innolux_panel_unprepare(), so they are consistent with
innolux_panel_enable() and innolux_panel_prepare().

This also fixes some mode check and irq timeout issue in MTK dsi code.

Since some dsi code (e.g. mtk_dsi) have following call trace:
1. drm_panel_disable(), which calls innolux_panel_disable()
2. switch to cmd mode
3. drm_panel_unprepare(), which calls innolux_panel_unprepare()

However, mtk_dsi needs to be in cmd mode to be able to send commands
(e.g. mipi_dsi_dcs_set_display_off() and mipi_dsi_dcs_enter_sleep_mode()),
so we need these functions to be called after the switch to cmd mode happens,
i.e. in innolux_panel_unprepare.


Signed-off-by: Hsin-Yi, Wang <hsinyi@chromium.org>
---
drivers/gpu/drm/panel/panel-innolux-p079zca.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index ca4ae45dd307..8e5724b63f1f 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -70,18 +70,12 @@ static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
static int innolux_panel_disable(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
- int err;

if (!innolux->enabled)
return 0;

backlight_disable(innolux->backlight);

- err = mipi_dsi_dcs_set_display_off(innolux->link);
- if (err < 0)
- DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
- err);
-
innolux->enabled = false;

return 0;
@@ -95,6 +89,11 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
if (!innolux->prepared)
return 0;

+ err = mipi_dsi_dcs_set_display_off(innolux->link);
+ if (err < 0)
+ DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
+ err);
+
err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
if (err < 0) {
DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
--
2.18.1
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