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Message-Id: <20170320133222.21773-1-richard.genoud@gmail.com>
Date: Mon, 20 Mar 2017 14:32:22 +0100
From: Richard Genoud <richard.genoud@...il.com>
To: Thierry Reding <thierry.reding@...il.com>
Cc: Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Richard Genoud <richard.genoud@...il.com>
Subject: [PATCHv2 2/2] drm/panel: simple: Add support for Winstar WF35LTIACD
This adds support for the Winstar Display Co. WF35LTIACD 3.5" QVGA TFT
LCD panel, which can be supported by the simple panel driver.
Signed-off-by: Richard Genoud <richard.genoud@...il.com>
---
Changes since v1:
Add power-supply property and an example in documentation
.../bindings/display/panel/winstar,wf35ltiacd | 53 ++++++++++++++++++++++
drivers/gpu/drm/panel/panel-simple.c | 28 ++++++++++++
2 files changed, 81 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/panel/winstar,wf35ltiacd
diff --git a/Documentation/devicetree/bindings/display/panel/winstar,wf35ltiacd b/Documentation/devicetree/bindings/display/panel/winstar,wf35ltiacd
new file mode 100644
index 000000000000..9ff59b868b28
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/winstar,wf35ltiacd
@@ -0,0 +1,53 @@
+Winstar Display Corporation 3.5" QVGA (320x240) TFT LCD panel
+
+Required properties:
+- compatible: should be "winstar,wf35ltiacd"
+- power-supply: regulator to provide the VCC supply voltage (3.3 volts)
+
+This binding is compatible with the simple-panel binding, which is specified
+in simple-panel.txt in this directory.
+
+Example:
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&hlcdc_pwm 0 50000 PWM_POLARITY_INVERTED>;
+ brightness-levels = <0 31 63 95 127 159 191 223 255>;
+ default-brightness-level = <191>;
+ power-supply = <&bl_reg>;
+ status = "okay";
+ };
+
+ bl_reg: backlight_regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "backlight-power-supply";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ status = "okay";
+ };
+
+ panel: panel {
+ compatible = "winstar,wf35ltiacd", "simple-panel";
+ backlight = <&backlight>;
+ power-supply = <&panel_reg>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ panel_input: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&hlcdc_panel_output>;
+ };
+ };
+ };
+
+ panel_reg: panel_regulator {
+ compatible = "regulator-fixed";
+ regulator-name = "panel-power-supply";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ status = "okay";
+ };
diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 06aaf79de8c8..5d45664c6c0e 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -1713,6 +1713,31 @@ static const struct panel_desc urt_umsh_8596md_parallel = {
.bus_format = MEDIA_BUS_FMT_RGB666_1X18,
};
+static const struct drm_display_mode winstar_wf35ltiacd_mode = {
+ .clock = 6410,
+ .hdisplay = 320,
+ .hsync_start = 320 + 20,
+ .hsync_end = 320 + 20 + 30,
+ .htotal = 320 + 20 + 30 + 38,
+ .vdisplay = 240,
+ .vsync_start = 240 + 4,
+ .vsync_end = 240 + 4 + 3,
+ .vtotal = 240 + 4 + 3 + 15,
+ .vrefresh = 60,
+ .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
+};
+
+static const struct panel_desc winstar_wf35ltiacd = {
+ .modes = &winstar_wf35ltiacd_mode,
+ .num_modes = 1,
+ .bpc = 8,
+ .size = {
+ .width = 70,
+ .height = 53,
+ },
+ .bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+};
+
static const struct of_device_id platform_of_match[] = {
{
.compatible = "ampire,am800480r3tmqwa1h",
@@ -1892,6 +1917,9 @@ static const struct of_device_id platform_of_match[] = {
.compatible = "urt,umsh-8596md-20t",
.data = &urt_umsh_8596md_parallel,
}, {
+ .compatible = "winstar,wf35ltiacd",
+ .data = &winstar_wf35ltiacd,
+ }, {
/* sentinel */
}
};
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