linux-kernel - [PATCH v4 3/3] drm/panel: simple: add display timings for logic technologies displays

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Date:   Mon, 20 Jan 2020 09:01:00 +0100
From:   Marcel Ziswiler <marcel@...wiler.com>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, info@...ictechno.com,
        j.bauer@...rich.com, Sam Ravnborg <sam@...nborg.org>,
        dri-devel@...ts.freedesktop.org,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>
Subject: [PATCH v4 3/3] drm/panel: simple: add display timings for logic technologies displays

From: Marcel Ziswiler <marcel.ziswiler@...adex.com>

Add display timings for the following 3 display panels manufactured by
Logic Technologies Limited:

- LT161010-2NHC e.g. as found in the Toradex Capacitive Touch Display
  7" Parallel [1]
- LT161010-2NHR e.g. as found in the Toradex Resistive Touch Display 7"
  Parallel [2]
- LT170410-2WHC e.g. as found in the Toradex Capacitive Touch Display
  10.1" LVDS [3]

Those panels may also be distributed by Endrich Bauelemente Vertriebs
GmbH [4].

[1] https://docs.toradex.com/104497-7-inch-parallel-capacitive-touch-display-800x480-datasheet.pdf
[2] https://docs.toradex.com/104498-7-inch-parallel-resistive-touch-display-800x480.pdf
[3] https://docs.toradex.com/105952-10-1-inch-lvds-capacitive-touch-display-1280x800-datasheet.pdf
[4] https://www.endrich.com/isi50_isi30_tft-displays/lt170410-1whc_isi30

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@...adex.com>
Reviewed-by: Philippe Schenker <philippe.schenker@...adex.com>

---

Changes in v4:
- Added recently made mandatory connector_type information as pointed
  out by Sam.

Changes in v3:
- Fix typo in pixelclock frequency for lt170410_2whc as recently
  discovered by Philippe.

Changes in v2:
- Added Philippe's reviewed-by.

 drivers/gpu/drm/panel/panel-simple.c | 67 ++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index d6f77bc494c7..a0dd84e11db7 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2107,6 +2107,64 @@ static const struct panel_desc lg_lp129qe = {
 	},
 };
 
+static const struct display_timing logictechno_lt161010_2nh_timing = {
+	.pixelclock = { 26400000, 33300000, 46800000 },
+	.hactive = { 800, 800, 800 },
+	.hfront_porch = { 16, 210, 354 },
+	.hback_porch = { 46, 46, 46 },
+	.hsync_len = { 1, 20, 40 },
+	.vactive = { 480, 480, 480 },
+	.vfront_porch = { 7, 22, 147 },
+	.vback_porch = { 23, 23, 23 },
+	.vsync_len = { 1, 10, 20 },
+	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE |
+		 DISPLAY_FLAGS_SYNC_POSEDGE,
+};
+
+static const struct panel_desc logictechno_lt161010_2nh = {
+	.timings = &logictechno_lt161010_2nh_timing,
+	.num_timings = 1,
+	.size = {
+		.width = 154,
+		.height = 86,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB666_1X18,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH |
+		     DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
+		     DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE,
+	.connector_type = DRM_MODE_CONNECTOR_DPI,
+};
+
+static const struct display_timing logictechno_lt170410_2whc_timing = {
+	.pixelclock = { 68900000, 71100000, 73400000 },
+	.hactive = { 1280, 1280, 1280 },
+	.hfront_porch = { 23, 60, 71 },
+	.hback_porch = { 23, 60, 71 },
+	.hsync_len = { 15, 40, 47 },
+	.vactive = { 800, 800, 800 },
+	.vfront_porch = { 5, 7, 10 },
+	.vback_porch = { 5, 7, 10 },
+	.vsync_len = { 6, 9, 12 },
+	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
+		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE |
+		 DISPLAY_FLAGS_SYNC_POSEDGE,
+};
+
+static const struct panel_desc logictechno_lt170410_2whc = {
+	.timings = &logictechno_lt170410_2whc_timing,
+	.num_timings = 1,
+	.size = {
+		.width = 217,
+		.height = 136,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
+	.bus_flags = DRM_BUS_FLAG_DE_HIGH |
+		     DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |
+		     DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE,
+	.connector_type = DRM_MODE_CONNECTOR_LVDS,
+};
+
 static const struct drm_display_mode mitsubishi_aa070mc01_mode = {
 	.clock = 30400,
 	.hdisplay = 800,
@@ -3417,6 +3475,15 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "logicpd,type28",
 		.data = &logicpd_type_28,
+	}, {
+		.compatible = "logictechno,lt161010-2nhc",
+		.data = &logictechno_lt161010_2nh,
+	}, {
+		.compatible = "logictechno,lt161010-2nhr",
+		.data = &logictechno_lt161010_2nh,
+	}, {
+		.compatible = "logictechno,lt170410-2whc",
+		.data = &logictechno_lt170410_2whc,
 	}, {
 		.compatible = "mitsubishi,aa070mc01-ca1",
 		.data = &mitsubishi_aa070mc01,
-- 
2.24.1