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Message-Id: <78212e5adad59f09db9ff87b4430b97494f4d874.1499955058.git-series.maxime.ripard@free-electrons.com>
Date: Thu, 13 Jul 2017 16:13:10 +0200
From: Maxime Ripard <maxime.ripard@...e-electrons.com>
To: Mark Brown <broonie@...nel.org>,
Thierry Reding <thierry.reding@...il.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Chen-Yu Tsai <wens@...e.org>,
Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc: dri-devel@...ts.freedesktop.org,
Daniel Vetter <daniel.vetter@...el.com>,
David Airlie <airlied@...ux.ie>,
Mark Rutland <mark.rutland@....com>,
Rob Herring <robh+dt@...nel.org>, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
Boris Brezillon <boris.brezillon@...e-electrons.com>,
Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Subject: [PATCH 15/18] drm/panel: Add Huarui LHR050H41 panel driver
The LHR050H41 panel is the panel shipped with the BananaPi M2-Magic. Add a
driver for it.
Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
---
drivers/gpu/drm/panel/Kconfig | 9 +-
drivers/gpu/drm/panel/Makefile | 1 +-
drivers/gpu/drm/panel/panel-huarui-lhr050h41.c | 444 ++++++++++++++++++-
3 files changed, 454 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-huarui-lhr050h41.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index d84a031fae24..eaa6e102775a 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -28,6 +28,15 @@ config DRM_PANEL_SIMPLE
that it can be automatically turned off when the panel goes into a
low power state.
+config DRM_PANEL_HUARUI_LHR050H41
+ tristate "Huarui LHR050H41 panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ help
+ Say Y if you want to enable support for the Huarui Lighting
+ LHR05041 DSI panel. The panel has a 1280x720 resolution.
+
config DRM_PANEL_INNOLUX_P079ZCA
tristate "Innolux P079ZCA panel"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 9f6610d08b00..58de7a853898 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -1,5 +1,6 @@
obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o
obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
+obj-$(CONFIG_DRM_PANEL_HUARUI_LHR050H41) += panel-huarui-lhr050h41.o
obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o
obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.o
obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
diff --git a/drivers/gpu/drm/panel/panel-huarui-lhr050h41.c b/drivers/gpu/drm/panel/panel-huarui-lhr050h41.c
new file mode 100644
index 000000000000..eb675eb9ee7d
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-huarui-lhr050h41.c
@@ -0,0 +1,444 @@
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/fb.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <linux/gpio/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+struct lhr050h41 {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+
+ struct backlight_device *backlight;
+ struct gpio_desc *power;
+ struct gpio_desc *reset;
+};
+
+static inline struct lhr050h41 *panel_to_lhr050h41(struct drm_panel *panel)
+{
+ return container_of(panel, struct lhr050h41, panel);
+}
+
+static int lhr050h41_switch_page(struct lhr050h41 *ctx, u8 page)
+{
+ u8 buf[4] = { 0xff, 0x98, 0x81, page };
+
+ return mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
+}
+
+static int lhr050h41_send_cmd_data(struct lhr050h41 *ctx, u8 cmd, u8 data)
+{
+ u8 buf[2] = { cmd, data };
+
+ return mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
+}
+
+static int lhr050h41_send_init_sequence(struct lhr050h41 *ctx)
+{
+ lhr050h41_switch_page(ctx, 3);
+
+ lhr050h41_send_cmd_data(ctx, 0x01, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x02, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x03, 0x73);
+ lhr050h41_send_cmd_data(ctx, 0x04, 0x03);
+ lhr050h41_send_cmd_data(ctx, 0x05, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x06, 0x06);
+ lhr050h41_send_cmd_data(ctx, 0x07, 0x06);
+ lhr050h41_send_cmd_data(ctx, 0x08, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x09, 0x18);
+ lhr050h41_send_cmd_data(ctx, 0x0a, 0x04);
+ lhr050h41_send_cmd_data(ctx, 0x0b, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x0c, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x0d, 0x03);
+ lhr050h41_send_cmd_data(ctx, 0x0e, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x0f, 0x25);
+ lhr050h41_send_cmd_data(ctx, 0x10, 0x25);
+ lhr050h41_send_cmd_data(ctx, 0x11, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x12, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x13, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x14, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x15, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x16, 0x0C);
+ lhr050h41_send_cmd_data(ctx, 0x17, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x18, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x19, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x1a, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x1b, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x1c, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x1d, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x1e, 0xC0);
+ lhr050h41_send_cmd_data(ctx, 0x1f, 0x80);
+ lhr050h41_send_cmd_data(ctx, 0x20, 0x04);
+ lhr050h41_send_cmd_data(ctx, 0x21, 0x01);
+ lhr050h41_send_cmd_data(ctx, 0x22, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x23, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x24, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x25, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x26, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x27, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x28, 0x33);
+ lhr050h41_send_cmd_data(ctx, 0x29, 0x03);
+ lhr050h41_send_cmd_data(ctx, 0x2a, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x2b, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x2c, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x2d, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x2e, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x2f, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x30, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x31, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x32, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x33, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x34, 0x04);
+ lhr050h41_send_cmd_data(ctx, 0x35, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x36, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x37, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x38, 0x3C);
+ lhr050h41_send_cmd_data(ctx, 0x39, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x3a, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x3b, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x3c, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x3d, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x3e, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x3f, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x40, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x41, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x42, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x43, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x44, 0x00);
+
+ lhr050h41_send_cmd_data(ctx, 0x50, 0x01);
+ lhr050h41_send_cmd_data(ctx, 0x51, 0x23);
+ lhr050h41_send_cmd_data(ctx, 0x52, 0x45);
+ lhr050h41_send_cmd_data(ctx, 0x53, 0x67);
+ lhr050h41_send_cmd_data(ctx, 0x54, 0x89);
+ lhr050h41_send_cmd_data(ctx, 0x55, 0xab);
+ lhr050h41_send_cmd_data(ctx, 0x56, 0x01);
+ lhr050h41_send_cmd_data(ctx, 0x57, 0x23);
+ lhr050h41_send_cmd_data(ctx, 0x58, 0x45);
+ lhr050h41_send_cmd_data(ctx, 0x59, 0x67);
+ lhr050h41_send_cmd_data(ctx, 0x5a, 0x89);
+ lhr050h41_send_cmd_data(ctx, 0x5b, 0xab);
+ lhr050h41_send_cmd_data(ctx, 0x5c, 0xcd);
+ lhr050h41_send_cmd_data(ctx, 0x5d, 0xef);
+
+ lhr050h41_send_cmd_data(ctx, 0x5e, 0x11);
+ lhr050h41_send_cmd_data(ctx, 0x5f, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x60, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x61, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x62, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x63, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x64, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x65, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x66, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x67, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x68, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x69, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x6a, 0x0C);
+ lhr050h41_send_cmd_data(ctx, 0x6b, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x6c, 0x0F);
+ lhr050h41_send_cmd_data(ctx, 0x6d, 0x0E);
+ lhr050h41_send_cmd_data(ctx, 0x6e, 0x0D);
+ lhr050h41_send_cmd_data(ctx, 0x6f, 0x06);
+ lhr050h41_send_cmd_data(ctx, 0x70, 0x07);
+ lhr050h41_send_cmd_data(ctx, 0x71, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x72, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x73, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x74, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x75, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x76, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x77, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x78, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x79, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x7a, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x7b, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x7c, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x7d, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x7e, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x7f, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x80, 0x0C);
+ lhr050h41_send_cmd_data(ctx, 0x81, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x82, 0x0F);
+ lhr050h41_send_cmd_data(ctx, 0x83, 0x0E);
+ lhr050h41_send_cmd_data(ctx, 0x84, 0x0D);
+ lhr050h41_send_cmd_data(ctx, 0x85, 0x06);
+ lhr050h41_send_cmd_data(ctx, 0x86, 0x07);
+ lhr050h41_send_cmd_data(ctx, 0x87, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x88, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x89, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x8A, 0x02);
+
+ lhr050h41_switch_page(ctx, 4);
+ lhr050h41_send_cmd_data(ctx, 0x6C, 0x15);
+ lhr050h41_send_cmd_data(ctx, 0x6E, 0x22);
+ lhr050h41_send_cmd_data(ctx, 0x6F, 0x33);
+ lhr050h41_send_cmd_data(ctx, 0x3A, 0xA4);
+ lhr050h41_send_cmd_data(ctx, 0x8D, 0x0D);
+ lhr050h41_send_cmd_data(ctx, 0x87, 0xBA);
+ lhr050h41_send_cmd_data(ctx, 0x26, 0x76);
+ lhr050h41_send_cmd_data(ctx, 0xB2, 0xD1);
+
+ lhr050h41_switch_page(ctx, 1);
+ lhr050h41_send_cmd_data(ctx, 0x22, 0x0A);
+ lhr050h41_send_cmd_data(ctx, 0x53, 0xDC);
+ lhr050h41_send_cmd_data(ctx, 0x55, 0xA7);
+ lhr050h41_send_cmd_data(ctx, 0x50, 0x78);
+ lhr050h41_send_cmd_data(ctx, 0x51, 0x78);
+ lhr050h41_send_cmd_data(ctx, 0x31, 0x02);
+ lhr050h41_send_cmd_data(ctx, 0x60, 0x14);
+ lhr050h41_send_cmd_data(ctx, 0xA0, 0x2A);
+ lhr050h41_send_cmd_data(ctx, 0xA1, 0x39);
+ lhr050h41_send_cmd_data(ctx, 0xA2, 0x46);
+ lhr050h41_send_cmd_data(ctx, 0xA3, 0x0e);
+ lhr050h41_send_cmd_data(ctx, 0xA4, 0x12);
+ lhr050h41_send_cmd_data(ctx, 0xA5, 0x25);
+ lhr050h41_send_cmd_data(ctx, 0xA6, 0x19);
+ lhr050h41_send_cmd_data(ctx, 0xA7, 0x1d);
+ lhr050h41_send_cmd_data(ctx, 0xA8, 0xa6);
+ lhr050h41_send_cmd_data(ctx, 0xA9, 0x1C);
+ lhr050h41_send_cmd_data(ctx, 0xAA, 0x29);
+ lhr050h41_send_cmd_data(ctx, 0xAB, 0x85);
+ lhr050h41_send_cmd_data(ctx, 0xAC, 0x1C);
+ lhr050h41_send_cmd_data(ctx, 0xAD, 0x1B);
+ lhr050h41_send_cmd_data(ctx, 0xAE, 0x51);
+ lhr050h41_send_cmd_data(ctx, 0xAF, 0x22);
+ lhr050h41_send_cmd_data(ctx, 0xB0, 0x2d);
+ lhr050h41_send_cmd_data(ctx, 0xB1, 0x4f);
+ lhr050h41_send_cmd_data(ctx, 0xB2, 0x59);
+ lhr050h41_send_cmd_data(ctx, 0xB3, 0x3F);
+ lhr050h41_send_cmd_data(ctx, 0xC0, 0x2A);
+ lhr050h41_send_cmd_data(ctx, 0xC1, 0x3a);
+ lhr050h41_send_cmd_data(ctx, 0xC2, 0x45);
+ lhr050h41_send_cmd_data(ctx, 0xC3, 0x0e);
+ lhr050h41_send_cmd_data(ctx, 0xC4, 0x11);
+ lhr050h41_send_cmd_data(ctx, 0xC5, 0x24);
+ lhr050h41_send_cmd_data(ctx, 0xC6, 0x1a);
+ lhr050h41_send_cmd_data(ctx, 0xC7, 0x1c);
+ lhr050h41_send_cmd_data(ctx, 0xC8, 0xaa);
+ lhr050h41_send_cmd_data(ctx, 0xC9, 0x1C);
+ lhr050h41_send_cmd_data(ctx, 0xCA, 0x29);
+ lhr050h41_send_cmd_data(ctx, 0xCB, 0x96);
+ lhr050h41_send_cmd_data(ctx, 0xCC, 0x1C);
+ lhr050h41_send_cmd_data(ctx, 0xCD, 0x1B);
+ lhr050h41_send_cmd_data(ctx, 0xCE, 0x51);
+ lhr050h41_send_cmd_data(ctx, 0xCF, 0x22);
+ lhr050h41_send_cmd_data(ctx, 0xD0, 0x2b);
+ lhr050h41_send_cmd_data(ctx, 0xD1, 0x4b);
+ lhr050h41_send_cmd_data(ctx, 0xD2, 0x59);
+ lhr050h41_send_cmd_data(ctx, 0xD3, 0x3F);
+
+ lhr050h41_switch_page(ctx, 0);
+ lhr050h41_send_cmd_data(ctx, 0x35, 0x00);
+ lhr050h41_send_cmd_data(ctx, 0x11, 0x00);
+
+ mdelay(120);
+
+ lhr050h41_send_cmd_data(ctx, 0x29, 0x00);
+
+ mdelay(20);
+
+ return 0;
+}
+
+static int lhr050h41_prepare(struct drm_panel *panel)
+{
+ struct lhr050h41 *ctx = panel_to_lhr050h41(panel);
+
+ /* Power the panel */
+ gpiod_set_value(ctx->power, 1);
+ mdelay(5);
+
+ /* And reset it */
+ gpiod_set_value(ctx->reset, 1);
+ mdelay(20);
+
+ gpiod_set_value(ctx->reset, 0);
+ mdelay(20);
+
+ lhr050h41_send_init_sequence(ctx);
+
+ return 0;
+}
+
+static void lhr050h41_enable_bl(struct lhr050h41 *ctx, bool enable)
+{
+ if (!ctx->backlight)
+ return;
+
+ if (enable) {
+ ctx->backlight->props.state &= ~BL_CORE_FBBLANK;
+ ctx->backlight->props.power = FB_BLANK_UNBLANK;
+ } else {
+ ctx->backlight->props.power = FB_BLANK_POWERDOWN;
+ ctx->backlight->props.state |= BL_CORE_FBBLANK;
+ }
+
+ backlight_update_status(ctx->backlight);
+}
+
+static int lhr050h41_enable(struct drm_panel *panel)
+{
+ struct lhr050h41 *ctx = panel_to_lhr050h41(panel);
+
+ lhr050h41_enable_bl(ctx, true);
+
+ return 0;
+}
+
+static int lhr050h41_disable(struct drm_panel *panel)
+{
+ struct lhr050h41 *ctx = panel_to_lhr050h41(panel);
+
+ lhr050h41_enable_bl(ctx, false);
+
+ return mipi_dsi_dcs_set_display_off(ctx->dsi);
+}
+
+static int lhr050h41_unprepare(struct drm_panel *panel)
+{
+ struct lhr050h41 *ctx = panel_to_lhr050h41(panel);
+
+ mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
+ gpiod_set_value(ctx->power, 0);
+ gpiod_set_value(ctx->reset, 1);
+
+ return 0;
+}
+
+static const struct drm_display_mode default_mode = {
+ .clock = 62000,
+ .vrefresh = 60,
+
+ .hdisplay = 720,
+ .hsync_start = 720 + 10,
+ .hsync_end = 720 + 10 + 20,
+ .htotal = 720 + 10 + 20 + 30,
+
+ .vdisplay = 1280,
+ .vsync_start = 1280 + 10,
+ .vsync_end = 1280 + 10 + 10,
+ .vtotal = 1280 + 10 + 10 + 20,
+};
+
+static int lhr050h41_get_modes(struct drm_panel *panel)
+{
+ struct drm_connector *connector = panel->connector;
+ struct lhr050h41 *ctx = panel_to_lhr050h41(panel);
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(panel->drm, &default_mode);
+ if (!mode) {
+ dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",
+ default_mode.hdisplay, default_mode.vdisplay,
+ default_mode.vrefresh);
+ return -ENOMEM;
+ }
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_probed_add(connector, mode);
+
+ panel->connector->display_info.width_mm = 62;
+ panel->connector->display_info.height_mm = 110;
+
+ return 1;
+}
+
+static const struct drm_panel_funcs lhr050h41_funcs = {
+ .prepare = lhr050h41_prepare,
+ .unprepare = lhr050h41_unprepare,
+ .enable = lhr050h41_enable,
+ .disable = lhr050h41_disable,
+ .get_modes = lhr050h41_get_modes,
+};
+
+static int lhr050h41_dsi_probe(struct mipi_dsi_device *dsi)
+{
+ struct device_node *np;
+ struct lhr050h41 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+ mipi_dsi_set_drvdata(dsi, ctx);
+ ctx->dsi = dsi;
+
+ drm_panel_init(&ctx->panel);
+ ctx->panel.dev = &dsi->dev;
+ ctx->panel.funcs = &lhr050h41_funcs;
+
+ ctx->power = devm_gpiod_get(&dsi->dev, "power", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->power)) {
+ dev_err(&dsi->dev, "Couldn't get our power GPIO\n");
+ return PTR_ERR(ctx->power);
+ }
+
+ ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->reset)) {
+ dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
+ return PTR_ERR(ctx->reset);
+ }
+
+ np = of_parse_phandle(dsi->dev.of_node, "backlight", 0);
+ if (np) {
+ ctx->backlight = of_find_backlight_by_node(np);
+ of_node_put(np);
+
+ if (!ctx->backlight)
+ return -EPROBE_DEFER;
+ }
+
+ ret = drm_panel_add(&ctx->panel);
+ if (ret < 0)
+ return ret;
+
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->lanes = 4;
+
+ return mipi_dsi_attach(dsi);
+}
+
+static int lhr050h41_dsi_remove(struct mipi_dsi_device *dsi)
+{
+ struct lhr050h41 *ctx = mipi_dsi_get_drvdata(dsi);
+
+ mipi_dsi_detach(dsi);
+ drm_panel_remove(&ctx->panel);
+
+ if (ctx->backlight)
+ put_device(&ctx->backlight->dev);
+
+ return 0;
+}
+
+static const struct of_device_id lhr050h41_of_match[] = {
+ { .compatible = "huarui,lhr050h41" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lhr050h41_of_match);
+
+static struct mipi_dsi_driver lhr050h41_dsi_driver = {
+ .probe = lhr050h41_dsi_probe,
+ .remove = lhr050h41_dsi_remove,
+ .driver = {
+ .name = "lhr050h41-dsi",
+ .of_match_table = lhr050h41_of_match,
+ },
+};
+module_mipi_dsi_driver(lhr050h41_dsi_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@...e-electrons.com>");
+MODULE_DESCRIPTION("Huarui LHR050H41 LCD Driver");
+MODULE_LICENSE("GPL v2");
--
git-series 0.9.1
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