drm/panel: p079zca: add variable unprepare_delay

A patch from »Innolux P097PFG panel« in state Maintainer-tree for linux-kernel

From: Lin Huang <hl@...> Date: Fri, 30 Mar 2018 19:46:54 +0800

Commit-Message

When panel power down, p079zca need delay between reset and disable power supply, but p097pfg does not need it. Similarly p097zca needs a delay after entering panel sleep mode. So add two delay properties, so we can meet these two panel power down sequence. Signed-off-by: Lin Huang <hl@...> [add sleep-mode delay] Signed-off-by: Heiko Stuebner <heiko@...>

Patch-Comment

drivers/gpu/drm/panel/panel-innolux-p079zca.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)

Statistics

  • 8 lines added
  • 2 lines removed

Changes

---------------- drivers/gpu/drm/panel/panel-innolux-p079zca.c -----------------
index 840ad4a6a6a6..630b0c2549ef 100644
@@ -33,6 +33,8 @@ struct panel_desc {
unsigned int lanes;
const char * const *supply_names;
unsigned int num_supplies;
+ unsigned int sleep_mode_delay;
+ unsigned int power_down_delay;
};
struct innolux_panel {
@@ -89,10 +91,13 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
return err;
}
+ if (innolux->desc->sleep_mode_delay)
+ msleep(innolux->desc->sleep_mode_delay);
+
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
- /* T8: 80ms - 1000ms */
- msleep(80);
+ if (innolux->desc->power_down_delay)
+ msleep(innolux->desc->power_down_delay);
regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);
@@ -205,6 +210,7 @@ static const struct panel_desc innolux_p079zca_panel_desc = {
.lanes = 4,
.supply_names = innolux_p079zca_supply_names,
.num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names),
+ .power_down_delay = 80, /* T8: 80ms - 1000ms */
};
static int innolux_panel_get_modes(struct drm_panel *panel)
 
 

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