This is useful when there is a bridge between the SoC and the
panel.
Signed-off-by: Jitao Shi <jitao....@mediatek.com>
---
drivers/gpu/drm/panel/panel-innolux-p079zca.c | 39 ++++++++++++-------
1 file changed, 24 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index d92d1c98878c..8db404fb5eeb 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -54,7 +54,7 @@ struct innolux_panel {
struct backlight_device *backlight;
struct regulator_bulk_data *supplies;
- struct gpio_desc *enable_gpio;
+ struct gpio_desc *enable_gpio[2];
bool prepared;
bool enabled;
@@ -82,7 +82,7 @@ static int innolux_panel_disable(struct drm_panel *panel)
static int innolux_panel_unprepare(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
- int err;
+ int err, i;
if (!innolux->prepared)
return 0;
@@ -102,7 +102,8 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
if (innolux->desc->sleep_mode_delay)
msleep(innolux->desc->sleep_mode_delay);
- gpiod_set_value_cansleep(innolux->enable_gpio, 0);
+ for (i = 0; i < ARRAY_SIZE(innolux->enable_gpio); i++)
+ gpiod_set_value_cansleep(innolux->enable_gpio[i], 0);
if (innolux->desc->power_down_delay)
msleep(innolux->desc->power_down_delay);
@@ -120,22 +121,27 @@ static int innolux_panel_unprepare(struct drm_panel
*panel)
static int innolux_panel_prepare(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
- int err;
+ int err, i;
if (innolux->prepared)
return 0;
- gpiod_set_value_cansleep(innolux->enable_gpio, 0);
+ for (i = 0; i < ARRAY_SIZE(innolux->enable_gpio); i++)
+ gpiod_set_value_cansleep(innolux->enable_gpio[i], 0);
err = regulator_bulk_enable(innolux->desc->num_supplies,
innolux->supplies);
if (err < 0)
return err;
- /* p079zca: t2 (20ms), p097pfg: t4 (15ms) */
- usleep_range(20000, 21000);
+ for (i = 0; i < ARRAY_SIZE(innolux->enable_gpio); i++) {
+ if (!innolux->enable_gpio[i])
+ break;
- gpiod_set_value_cansleep(innolux->enable_gpio, 1);
+ /* p079zca: t2 (20ms), p097pfg: t4 (15ms) */
+ usleep_range(20000, 21000);
+ gpiod_set_value_cansleep(innolux->enable_gpio[i], 1);
+ }
/* p079zca: t4, p097pfg: t5 */
usleep_range(20000, 21000);
@@ -195,7 +201,8 @@ static int innolux_panel_prepare(struct drm_panel *panel)
return 0;
poweroff:
- gpiod_set_value_cansleep(innolux->enable_gpio, 0);
+ for (i = 0; i < ARRAY_SIZE(innolux->enable_gpio); i++)
+ gpiod_set_value_cansleep(innolux->enable_gpio[i], 0);
regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);
return err;
@@ -475,12 +482,14 @@ static int innolux_panel_add(struct mipi_dsi_device *dsi,
if (err < 0)
return err;
- innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
- GPIOD_OUT_HIGH);
- if (IS_ERR(innolux->enable_gpio)) {
- err = PTR_ERR(innolux->enable_gpio);
- dev_dbg(dev, "failed to get enable gpio: %d\n", err);
- innolux->enable_gpio = NULL;
+ for (i = 0; i < ARRAY_SIZE(innolux->enable_gpio); i++) {
+ innolux->enable_gpio[i] = devm_gpiod_get_index_optional(dev,
+ "enable", i, GPIOD_OUT_HIGH);
+ if (IS_ERR(innolux->enable_gpio[i])) {
+ err = PTR_ERR(innolux->enable_gpio[i]);
+ dev_err(dev, "failed to get enable gpio: %d\n", err);
+ innolux->enable_gpio[i] = NULL;
+ }
}
innolux->backlight = devm_of_find_backlight(dev);
--
2.21.0
