linux-kernel - [PATCH v8 7/7] drm/panel-simple: Add missing connector type for some panels

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Message-Id: <20200617222703.17080-8-digetx@gmail.com>
Date:   Thu, 18 Jun 2020 01:27:03 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v8 7/7] drm/panel-simple: Add missing connector type for some panels

The DRM panel bridge core requires connector type to be set up properly,
otherwise it rejects the panel. The missing connector type problem popped
up while I was trying to wrap CLAA070WP03XG panel into a DRM bridge in
order to test whether panel's rotation property work properly using
panel-simple driver on NVIDIA Tegra30 Nexus 7 tablet device, which uses
CLAA070WP03XG display panel.

The NVIDIA Tegra DRM driver recently gained DRM bridges support for the
RGB output and now driver wraps directly-connected panels into DRM bridge.
Hence all panels should have connector type set properly now, otherwise
the panel's wrapping fails.

This patch adds missing connector types for the LVDS panels that are found
on NVIDIA Tegra devices:

  1. AUO B101AW03
  2. Chunghwa CLAA070WP03XG
  3. Chunghwa CLAA101WA01A
  4. Chunghwa CLAA101WB01
  5. EDT ET057090DHU
  6. Innolux N156BGE L21
  7. Samsung LTN101NT05

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/gpu/drm/panel/panel-simple.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 6764ac630e22..9eb2dbb7bfa6 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -687,6 +687,7 @@ static const struct panel_desc auo_b101aw03 = {
 		.width = 223,
 		.height = 125,
 	},
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
 static const struct display_timing auo_b101ean01_timing = {
@@ -1340,6 +1341,7 @@ static const struct panel_desc chunghwa_claa070wp03xg = {
 		.width = 94,
 		.height = 150,
 	},
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
 static const struct drm_display_mode chunghwa_claa101wa01a_mode = {
@@ -1362,6 +1364,7 @@ static const struct panel_desc chunghwa_claa101wa01a = {
 		.width = 220,
 		.height = 120,
 	},
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
 static const struct drm_display_mode chunghwa_claa101wb01_mode = {
@@ -1384,6 +1387,7 @@ static const struct panel_desc chunghwa_claa101wb01 = {
 		.width = 223,
 		.height = 125,
 	},
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
 static const struct drm_display_mode dataimage_scf0700c48ggu18_mode = {
@@ -1573,6 +1577,7 @@ static const struct panel_desc edt_et057090dhu = {
 	},
 	.bus_format = MEDIA_BUS_FMT_RGB666_1X18,
 	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
 static const struct drm_display_mode edt_etm0700g0dh6_mode = {
@@ -2055,6 +2060,7 @@ static const struct panel_desc innolux_n156bge_l21 = {
 		.width = 344,
 		.height = 193,
 	},
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
 static const struct drm_display_mode innolux_p120zdg_bf1_mode = {
@@ -3001,6 +3007,7 @@ static const struct panel_desc samsung_ltn101nt05 = {
 		.width = 223,
 		.height = 125,
 	},
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };
 
 static const struct drm_display_mode samsung_ltn140at29_301_mode = {
-- 
2.26.0