kernel 5.8.4

1 files changed, 84 insertions, 0 deletions

diff --git a/SOURCES/0001-drm-panel-st7703-Move-generic-part-of-init-sequence-.patch b/SOURCES/0001-drm-panel-st7703-Move-generic-part-of-init-sequence-.patch
new file mode 100644
index 0000000..81c6220
--- /dev/null
+++ b/SOURCES/0001-drm-panel-st7703-Move-generic-part-of-init-sequence-.patch
@@ -0,0 +1,84 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Ondrej Jirman <megous@megous.com>
+Date: Fri, 26 Jun 2020 02:55:56 +0200
+Subject: [PATCH] drm/panel: st7703: Move generic part of init sequence to
+ enable callback
+
+Calling sleep out and display on is a controller specific part
+of the initialization process. Move it out of the panel specific
+initialization function to the enable callback.
+
+Signed-off-by: Ondrej Jirman <megous@megous.com>
+---
+ drivers/gpu/drm/panel/panel-sitronix-st7703.c | 33 ++++++++++---------
+ 1 file changed, 18 insertions(+), 15 deletions(-)
+
+diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+index d03aab10cfef..cdbf7dfb4dd4 100644
+--- a/drivers/gpu/drm/panel/panel-sitronix-st7703.c
++++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c
+@@ -84,8 +84,6 @@ static inline struct st7703 *panel_to_st7703(struct drm_panel *panel)
+ static int jh057n_init_sequence(struct st7703 *ctx)
+ {
+ 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+-	struct device *dev = ctx->dev;
+-	int ret;
+
+ 	/*
+ 	 * Init sequence was supplied by the panel vendor. Most of the commands
+@@ -136,20 +134,7 @@ static int jh057n_init_sequence(struct st7703 *ctx)
+ 			      0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41,
+ 			      0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10,
+ 			      0x11, 0x18);
+-	msleep(20);
+-
+-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+-	if (ret < 0) {
+-		DRM_DEV_ERROR(dev, "Failed to exit sleep mode: %d\n", ret);
+-		return ret;
+-	}
+-	/* Panel is operational 120 msec after reset */
+-	msleep(60);
+-	ret = mipi_dsi_dcs_set_display_on(dsi);
+-	if (ret)
+-		return ret;
+
+-	DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
+ 	return 0;
+ }
+
+@@ -181,6 +166,7 @@ struct st7703_panel_desc jh057n00900_panel_desc = {
+ static int st7703_enable(struct drm_panel *panel)
+ {
+ 	struct st7703 *ctx = panel_to_st7703(panel);
++	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ 	int ret;
+
+ 	ret = ctx->desc->init_sequence(ctx);
+@@ -190,6 +176,23 @@ static int st7703_enable(struct drm_panel *panel)
+ 		return ret;
+ 	}
+
++	msleep(20);
++
++	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
++	if (ret < 0) {
++		DRM_DEV_ERROR(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
++		return ret;
++	}
++
++	/* Panel is operational 120 msec after reset */
++	msleep(60);
++
++	ret = mipi_dsi_dcs_set_display_on(dsi);
++	if (ret)
++		return ret;
++
++	DRM_DEV_DEBUG_DRIVER(ctx->dev, "Panel init sequence done\n");
++
+ 	return 0;
+ }
+
+-- 
+2.26.2
+