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From:   Lukasz Majewski <lukma@denx.de>
To:     Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Thierry Reding <thierry.reding@gmail.com>,
        David Airlie <airlied@linux.ie>, Rob Herring <robh@kernel.org>
Cc:     dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, Lukasz Majewski <lukma@denx.de>
Subject: [PATCH] display: panel: Add KOE tx14d24vm1bpa display support (320x240)
Date:   Thu, 12 Apr 2018 16:37:15 +0200
Message-Id: <20180412143715.6828-1-lukma@denx.de>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

This commit adds support for KOE's 5.7" display.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
---
 .../bindings/display/panel/koe,tx14d24vm1bpa.txt   | 42 ++++++++++++++++++++++
 drivers/gpu/drm/panel/panel-simple.c               | 26 ++++++++++++++
 2 files changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/koe,tx14d24vm1bpa.txt

diff --git a/Documentation/devicetree/bindings/display/panel/koe,tx14d24vm1bpa.txt b/Documentation/devicetree/bindings/display/panel/koe,tx14d24vm1bpa.txt
new file mode 100644
index 000000000000..be7ac666807b
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/koe,tx14d24vm1bpa.txt
@@ -0,0 +1,42 @@
+Kaohsiung Opto-Electronics Inc. 5.7" QVGA (320 x 240) TFT LCD panel
+
+Required properties:
+- compatible: should be "koe,tx14d24vm1bpa"
+- backlight: phandle of the backlight device attached to the panel
+- power-supply: single regulator to provide the supply voltage
+
+Required nodes:
+- port: Parallel port mapping to connect this display
+
+This panel needs single power supply voltage. Its backlight is conntrolled
+via PWM signal.
+
+Example:
+--------
+
+Example device-tree definition when connected to iMX53 based board
+
+	lcd_panel: lcd-panel {
+		compatible = "koe,tx14d24vm1bpa";
+		backlight = <&backlight_lcd>;
+		power-supply = <&reg_3v3>;
+
+		port {
+			lcd_panel_in: endpoint {
+				remote-endpoint = <&lcd_display_out>;
+			};
+		};
+	};
+
+Then one needs to extend the dispX node:
+
+	lcd_display: disp1 {
+
+		port@1 {
+			reg = <1>;
+
+			lcd_display_out: endpoint {
+				remote-endpoint = <&lcd_panel_in>;
+			};
+		};
+	};
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 62314085b635..45e61af936e0 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1245,6 +1245,29 @@ static const struct panel_desc innolux_zj070na_01p = {
 	},
 };
 
+static const struct display_timing koe_tx14d24vm1bpa_timing = {
+	.pixelclock = { 5580000, 5850000, 6200000 },
+	.hactive = { 320, 320, 320 },
+	.hfront_porch = { 30, 30, 30 },
+	.hback_porch = { 30, 30, 30 },
+	.hsync_len = { 1, 5, 17 },
+	.vactive = { 240, 240, 240 },
+	.vfront_porch = { 6, 6, 6 },
+	.vback_porch = { 5, 5, 5 },
+	.vsync_len = { 1, 2, 11 },
+	.flags = DISPLAY_FLAGS_DE_HIGH,
+};
+
+static const struct panel_desc koe_tx14d24vm1bpa = {
+	.timings = &koe_tx14d24vm1bpa_timing,
+	.num_timings = 1,
+	.bpc = 6,
+	.size = {
+		.width = 115,
+		.height = 86,
+	},
+};
+
 static const struct display_timing kyo_tcg121xglp_timing = {
 	.pixelclock = { 52000000, 65000000, 71000000 },
 	.hactive = { 1024, 1024, 1024 },
@@ -2155,6 +2178,9 @@ static const struct of_device_id platform_of_match[] = {
 		.compatible = "innolux,zj070na-01p",
 		.data = &innolux_zj070na_01p,
 	}, {
+		.compatible = "koe,tx14d24vm1bpa",
+		.data = &koe_tx14d24vm1bpa,
+	}, {
 		.compatible = "kyo,tcg121xglp",
 		.data = &kyo_tcg121xglp,
 	}, {
-- 
2.11.0