Signed-off-by: Mark Zhang <markz@xxxxxxxxxx>
---
drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
index b69f88cd15b2..654575607864 100644
--- a/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.c
@@ -27,6 +27,7 @@ struct sharp_panel {
struct backlight_device *backlight;
struct regulator *supply;
+ u32 te_polarity;
bool prepared;
bool enabled;
@@ -280,7 +281,7 @@ static int sharp_panel_enable(struct drm_panel *panel)
return 0;
}
-static const struct drm_display_mode default_mode = {
+static struct drm_display_mode default_mode = {
.clock = 278000,
.hdisplay = 2560,
.hsync_start = 2560 + 128,
@@ -297,6 +298,12 @@ static const struct drm_display_mode default_mode = {
static int sharp_panel_get_modes(struct drm_panel *panel)
{
struct drm_display_mode *mode;
+ struct sharp_panel *sharp = to_sharp_panel(panel);
+
+ if (sharp->te_polarity)
+ default_mode.flags |= DRM_MODE_FLAG_TE_POLARITY_HIGH;
+ else
+ default_mode.flags |= DRM_MODE_FLAG_TE_POLARITY_LOW;
mode = drm_mode_duplicate(panel->drm, &default_mode);
if (!mode) {
@@ -341,6 +348,14 @@ static int sharp_panel_add(struct sharp_panel *sharp)
if (IS_ERR(sharp->supply))
return PTR_ERR(sharp->supply);
+ err = of_property_read_u32(sharp->link1->dev.of_node,
+ "te-polarity", &sharp->te_polarity);
+ if (err < 0) {
+ dev_err(&sharp->link1->dev,
+ "Read te-polarity failed: %d\n", err);
+ return err;
+ }
+
np = of_parse_phandle(sharp->link1->dev.of_node, "backlight", 0);
if (np) {
sharp->backlight = of_find_backlight_by_node(np);
--
2.1.4
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