linux-kernel - [PATCH 1/2] drm/panel: simple: Add FriendlyELEC HD702E 800x1280 LCD panel

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Message-Id: <20190501121448.3812-1-jagan@amarulasolutions.com>
Date:   Wed,  1 May 2019 17:44:47 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-amarula@...rulasolutions.com,
        Jagan Teki <jagan@...rulasolutions.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH 1/2] drm/panel: simple: Add FriendlyELEC HD702E 800x1280 LCD panel

HD702E lcd is FriendlyELEC developed eDP LCD panel with 800x1280
resolution. It has built in Goodix, GT9271 captive touchscreen
with backlight adjustable via PWM.

Add support for it.

Cc: Thierry Reding <thierry.reding@...il.com>
Cc: Sam Ravnborg <sam@...nborg.org>
Cc: David Airlie <airlied@...ux.ie>
Cc: Daniel Vetter <daniel@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org
Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
---
 .../display/panel/friendlyarm,hd702e.txt      | 29 +++++++++++++++++++
 drivers/gpu/drm/panel/panel-simple.c          | 26 +++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/friendlyarm,hd702e.txt

diff --git a/Documentation/devicetree/bindings/display/panel/friendlyarm,hd702e.txt b/Documentation/devicetree/bindings/display/panel/friendlyarm,hd702e.txt
new file mode 100644
index 000000000000..67349d7f79be
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/friendlyarm,hd702e.txt
@@ -0,0 +1,29 @@
+FriendlyELEC HD702E 800x1280 LCD panel
+
+HD702E lcd is FriendlyELEC developed eDP LCD panel with 800x1280
+resolution. It has built in Goodix, GT9271 captive touchscreen
+with backlight adjustable via PWM.
+
+Required properties:
+- compatible: should be "friendlyarm,hd702e"
+- power-supply: regulator to provide the supply voltage
+
+Optional properties:
+- backlight: phandle of the backlight device attached to the panel
+
+Optional nodes:
+- Video port for LCD panel input.
+
+Example:
+
+	panel {
+		compatible ="friendlyarm,hd702e";
+		backlight = <&backlight>;
+		power-supply = <&vcc3v3_sys>;
+
+		port {
+			panel_in_edp: endpoint {
+				remote-endpoint = <&edp_out_panel>;
+			};
+		};
+	};
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 9e8218f6a3f2..9db3c0c65ef2 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1184,6 +1184,29 @@ static const struct panel_desc foxlink_fl500wvr00_a0t = {
 	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
 };
 
+static const struct drm_display_mode friendlyarm_hd702e_mode = {
+	.clock		= 67185,
+	.hdisplay	= 800,
+	.hsync_start	= 800 + 20,
+	.hsync_end	= 800 + 20 + 24,
+	.htotal		= 800 + 20 + 24 + 20,
+	.vdisplay	= 1280,
+	.vsync_start	= 1280 + 4,
+	.vsync_end	= 1280 + 4 + 8,
+	.vtotal		= 1280 + 4 + 8 + 4,
+	.vrefresh	= 60,
+	.flags 		= DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+};
+
+static const struct panel_desc friendlyarm_hd702e = {
+	.modes = &friendlyarm_hd702e_mode,
+	.num_modes = 1,
+	.size = {
+		.width	= 94,
+		.height	= 151,
+	},
+};
+
 static const struct drm_display_mode giantplus_gpg482739qs5_mode = {
 	.clock = 9000,
 	.hdisplay = 480,
@@ -2634,6 +2657,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "edt,etm0700g0edh6",
 		.data = &edt_etm0700g0bdh6,
+	}, {
+		.compatible = "friendlyarm,hd702e",
+		.data = &friendlyarm_hd702e,
 	}, {
 		.compatible = "foxlink,fl500wvr00-a0t",
 		.data = &foxlink_fl500wvr00_a0t,
-- 
2.18.0.321.gffc6fa0e3