linux-kernel - [PATCH v3 3/3] drm/panel-simple: add Gopher 2b LCD panel

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Date:   Mon, 26 Jul 2021 01:15:27 +0300
From:   Artjom Vejsel <akawolf0@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     thierry.reding@...il.com, sam@...nborg.org,
        dri-devel@...ts.freedesktop.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        paul@...pouillou.net, akawolf0@...il.com
Subject: [PATCH v3 3/3] drm/panel-simple: add Gopher 2b LCD panel

The Gopher 2b LCD panel is used in Gopher 2b handhelds.
It's simple panel with NewVision NV3047 driver, but SPI lines are not connected.
It has no specific name, since it's unique to that handhelds.
lot name at AliExpress: 4.3 inch 40PIN TFT LCD Screen COG NV3047 Drive IC 480(RGB)*272 No Touch 24Bit RGB Interface

Signed-off-by: Artjom Vejsel <akawolf0@...il.com>
---
 drivers/gpu/drm/panel/panel-simple.c | 43 ++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 9b286bd4444f..6b69c0c70814 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -3563,6 +3563,46 @@ static const struct panel_desc qd43003c0_40 = {
 	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
 };
 
+static const struct drm_display_mode qishenglong_gopher2b_lcd_panel_modes[] = {
+	{ /* 60 Hz */
+		.clock = 10800,
+		.hdisplay = 480,
+		.hsync_start = 480 + 77,
+		.hsync_end = 480 + 77 + 41,
+		.htotal = 480 + 77 + 41 + 2,
+		.vdisplay = 272,
+		.vsync_start = 272 + 16,
+		.vsync_end = 272 + 16 + 10,
+		.vtotal = 272 + 16 + 10 + 2,
+		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+	},
+	{ /* 50 Hz */
+		.clock = 10800,
+		.hdisplay = 480,
+		.hsync_start = 480 + 17,
+		.hsync_end = 480 + 17 + 41,
+		.htotal = 480 + 17 + 41 + 2,
+		.vdisplay = 272,
+		.vsync_start = 272 + 116,
+		.vsync_end = 272 + 116 + 10,
+		.vtotal = 272 + 116 + 10 + 2,
+		.flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+	},
+};
+
+static const struct panel_desc qishenglong_gopher2b_lcd_panel = {
+	.modes = qishenglong_gopher2b_lcd_panel_modes,
+	.num_modes = ARRAY_SIZE(qishenglong_gopher2b_lcd_panel_modes),
+	.bpc = 8,
+	.size = {
+		.width = 95,
+		.height = 54,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
+	.connector_type = DRM_MODE_CONNECTOR_DPI,
+};
+
 static const struct display_timing rocktech_rk070er9427_timing = {
 	.pixelclock = { 26400000, 33300000, 46800000 },
 	.hactive = { 800, 800, 800 },
@@ -4651,6 +4691,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "qiaodian,qd43003c0-40",
 		.data = &qd43003c0_40,
+	}, {
+		.compatible = "qishenglong,gopher2b-lcd-panel",
+		.data = &qishenglong_gopher2b_lcd_panel,
 	}, {
 		.compatible = "rocktech,rk070er9427",
 		.data = &rocktech_rk070er9427,
-- 
2.32.0