The auo,b101uan08.3 panel (already supported by this driver) has
a 3.3V rail that needs to be turned on. For previous users of
this panel this voltage was directly output by pmic. On a new
user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
to turn the 3.3V rail on. Add support in the driver for this.
Signed-off-by: yangcong <yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index db9d0b86d542..9a644433629e 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -45,6 +45,7 @@ struct boe_panel {
const struct panel_desc *desc;
enum drm_panel_orientation orientation;
+ struct regulator *pp3300;
struct regulator *pp1800;
struct regulator *avee;
struct regulator *avdd;
@@ -511,6 +512,7 @@ static int boe_panel_unprepare(struct drm_panel *panel)
gpiod_set_value(boe->enable_gpio, 0);
usleep_range(5000, 7000);
regulator_disable(boe->pp1800);
+ regulator_disable(boe->pp3300);
} else {
gpiod_set_value(boe->enable_gpio, 0);
usleep_range(500, 1000);
@@ -518,6 +520,7 @@ static int boe_panel_unprepare(struct drm_panel *panel)
regulator_disable(boe->avdd);
usleep_range(5000, 7000);
regulator_disable(boe->pp1800);
+ regulator_disable(boe->pp3300);
}
boe->prepared = false;
@@ -536,6 +539,10 @@ static int boe_panel_prepare(struct drm_panel *panel)
gpiod_set_value(boe->enable_gpio, 0);
usleep_range(1000, 1500);
+ ret = regulator_enable(boe->pp3300);
+ if (ret < 0)
+ return ret;
+
ret = regulator_enable(boe->pp1800);
if (ret < 0)
return ret;
@@ -767,6 +774,10 @@ static int boe_panel_add(struct boe_panel *boe)
if (IS_ERR(boe->avee))
return PTR_ERR(boe->avee);
+ boe->pp3300 = devm_regulator_get(dev, "pp3300");
+ if (IS_ERR(boe->pp3300))
+ return PTR_ERR(boe->pp3300);
+
boe->pp1800 = devm_regulator_get(dev, "pp1800");
if (IS_ERR(boe->pp1800))
return PTR_ERR(boe->pp1800);
--
2.25.1
