2 files changed, 54 insertions, 7 deletions

diff --git a/drivers/gpu/drm/panel/panel-abt-y030xx067a.c b/drivers/gpu/drm/panel/panel-abt-y030xx067a.c
index ed626fdc08e8..1cc0f1d09684 100644
--- a/drivers/gpu/drm/panel/panel-abt-y030xx067a.c
+++ b/drivers/gpu/drm/panel/panel-abt-y030xx067a.c
@@ -140,7 +140,7 @@ static const struct reg_sequence y030xx067a_init_sequence[] = {
 	{ 0x03, REG03_VPOSITION(0x0a) },
 	{ 0x04, REG04_HPOSITION1(0xd2) },
 	{ 0x05, REG05_CLIP | REG05_NVM_VREFRESH | REG05_SLBRCHARGE(0x2) },
-	{ 0x06, REG06_XPSAVE | REG06_NT },
+	{ 0x06, REG06_NT },
 	{ 0x07, 0 },
 	{ 0x08, REG08_PANEL(0x1) | REG08_CLOCK_DIV(0x2) },
 	{ 0x09, REG09_SUB_BRIGHT_R(0x20) },
@@ -183,8 +183,6 @@ static int y030xx067a_prepare(struct drm_panel *panel)
 		goto err_disable_regulator;
 	}
 
-	msleep(120);
-
 	return 0;
 
 err_disable_regulator:
@@ -202,6 +200,29 @@ static int y030xx067a_unprepare(struct drm_panel *panel)
 	return 0;
 }
 
+static int y030xx067a_enable(struct drm_panel *panel)
+{
+	struct y030xx067a *priv = to_y030xx067a(panel);
+
+	regmap_set_bits(priv->map, 0x06, REG06_XPSAVE);
+
+	if (panel->backlight) {
+		/* Wait for the picture to be ready before enabling backlight */
+		msleep(120);
+	}
+
+	return 0;
+}
+
+static int y030xx067a_disable(struct drm_panel *panel)
+{
+	struct y030xx067a *priv = to_y030xx067a(panel);
+
+	regmap_clear_bits(priv->map, 0x06, REG06_XPSAVE);
+
+	return 0;
+}
+
 static int y030xx067a_get_modes(struct drm_panel *panel,
 				struct drm_connector *connector)
 {
@@ -239,6 +260,8 @@ static int y030xx067a_get_modes(struct drm_panel *panel,
 static const struct drm_panel_funcs y030xx067a_funcs = {
 	.prepare	= y030xx067a_prepare,
 	.unprepare	= y030xx067a_unprepare,
+	.enable		= y030xx067a_enable,
+	.disable	= y030xx067a_disable,
 	.get_modes	= y030xx067a_get_modes,
 };
 
@@ -246,6 +269,7 @@ static const struct regmap_config y030xx067a_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = 0x15,
+	.cache_type = REGCACHE_FLAT,
 };
 
 static int y030xx067a_probe(struct spi_device *spi)
diff --git a/drivers/gpu/drm/panel/panel-innolux-ej030na.c b/drivers/gpu/drm/panel/panel-innolux-ej030na.c
index e3b1daa0cb72..b2b0ebc9e943 100644
--- a/drivers/gpu/drm/panel/panel-innolux-ej030na.c
+++ b/drivers/gpu/drm/panel/panel-innolux-ej030na.c
@@ -80,8 +80,6 @@ static const struct reg_sequence ej030na_init_sequence[] = {
 	{ 0x47, 0x08 },
 	{ 0x48, 0x0f },
 	{ 0x49, 0x0f },
-
-	{ 0x2b, 0x01 },
 };
 
 static int ej030na_prepare(struct drm_panel *panel)
@@ -109,8 +107,6 @@ static int ej030na_prepare(struct drm_panel *panel)
 		goto err_disable_regulator;
 	}
 
-	msleep(120);
-
 	return 0;
 
 err_disable_regulator:
@@ -128,6 +124,31 @@ static int ej030na_unprepare(struct drm_panel *panel)
 	return 0;
 }
 
+static int ej030na_enable(struct drm_panel *panel)
+{
+	struct ej030na *priv = to_ej030na(panel);
+
+	/* standby off */
+	regmap_write(priv->map, 0x2b, 0x01);
+
+	if (panel->backlight) {
+		/* Wait for the picture to be ready before enabling backlight */
+		msleep(120);
+	}
+
+	return 0;
+}
+
+static int ej030na_disable(struct drm_panel *panel)
+{
+	struct ej030na *priv = to_ej030na(panel);
+
+	/* standby on */
+	regmap_write(priv->map, 0x2b, 0x00);
+
+	return 0;
+}
+
 static int ej030na_get_modes(struct drm_panel *panel,
 			     struct drm_connector *connector)
 {
@@ -165,6 +186,8 @@ static int ej030na_get_modes(struct drm_panel *panel,
 static const struct drm_panel_funcs ej030na_funcs = {
 	.prepare	= ej030na_prepare,
 	.unprepare	= ej030na_unprepare,
+	.enable		= ej030na_enable,
+	.disable	= ej030na_disable,
 	.get_modes	= ej030na_get_modes,
 };