From: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
The LHR050H41 panel is the panel shipped with the BananaPi M2-Magic. Add a
driver for it.
Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/panel/Kconfig | 9 +-
drivers/gpu/drm/panel/Makefile | 1 +-
drivers/gpu/drm/panel/panel-huarui-lhr050h41.c | 506 ++++++++++++++++++-
3 files changed, 516 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 6ba4031f3919..965310fd129a 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_ILITEK_IL9322
tristate "Ilitek ILI9322 320x240 QVGA panels"
depends on OF && SPI
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 6d251ebc568c..0eda133d26bb 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
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_ILITEK_IL9322) += panel-ilitek-ili9322.o
obj-$(CONFIG_DRM_PANEL_INNOLUX_P079ZCA) += panel-innolux-p079zca.o
obj-$(CONFIG_DRM_PANEL_JDI_LT070ME05000) += panel-jdi-lt070me05000.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..f73d484a695b
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-huarui-lhr050h41.c
@@ -0,0 +1,506 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017, Free Electrons
+ * Author: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
+ */
+
+#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;
+};
+
+enum lhr050h41_op {
+ LHR050H41_SWITCH_PAGE,
+ LHR050H41_COMMAND,
+};
+
+struct lhr050h41_instr {
+ enum lhr050h41_op op;
+
+ union arg {
+ struct cmd {
+ u8 cmd;
+ u8 data;
+ } cmd;
+ u8 page;
+ } arg;
+};
+
+#define LHR050H41_SWITCH_PAGE_INSTR(_page) \
+ { \
+ .op = LHR050H41_SWITCH_PAGE, \
+ .arg = { \
+ .page = (_page), \
+ }, \
+ }
+
+#define LHR050H41_COMMAND_INSTR(_cmd, _data) \
+ { \
+ .op = LHR050H41_COMMAND, \
+ .arg = { \
+ .cmd = { \
+ .cmd = (_cmd), \
+ .data = (_data), \
+ }, \
+ }, \
+ }
+
+struct lhr050h41_instr lhr050h41_init[] = {
+ LHR050H41_SWITCH_PAGE_INSTR(3),
+ LHR050H41_COMMAND_INSTR(0x01, 0x00),
+ LHR050H41_COMMAND_INSTR(0x02, 0x00),
+ LHR050H41_COMMAND_INSTR(0x03, 0x73),
+ LHR050H41_COMMAND_INSTR(0x04, 0x03),
+ LHR050H41_COMMAND_INSTR(0x05, 0x00),
+ LHR050H41_COMMAND_INSTR(0x06, 0x06),
+ LHR050H41_COMMAND_INSTR(0x07, 0x06),
+ LHR050H41_COMMAND_INSTR(0x08, 0x00),
+ LHR050H41_COMMAND_INSTR(0x09, 0x18),
+ LHR050H41_COMMAND_INSTR(0x0a, 0x04),
+ LHR050H41_COMMAND_INSTR(0x0b, 0x00),
+ LHR050H41_COMMAND_INSTR(0x0c, 0x02),
+ LHR050H41_COMMAND_INSTR(0x0d, 0x03),
+ LHR050H41_COMMAND_INSTR(0x0e, 0x00),
+ LHR050H41_COMMAND_INSTR(0x0f, 0x25),
+ LHR050H41_COMMAND_INSTR(0x10, 0x25),
+ LHR050H41_COMMAND_INSTR(0x11, 0x00),
+ LHR050H41_COMMAND_INSTR(0x12, 0x00),
+ LHR050H41_COMMAND_INSTR(0x13, 0x00),
+ LHR050H41_COMMAND_INSTR(0x14, 0x00),
+ LHR050H41_COMMAND_INSTR(0x15, 0x00),
+ LHR050H41_COMMAND_INSTR(0x16, 0x0C),
+ LHR050H41_COMMAND_INSTR(0x17, 0x00),
+ LHR050H41_COMMAND_INSTR(0x18, 0x00),
+ LHR050H41_COMMAND_INSTR(0x19, 0x00),
+ LHR050H41_COMMAND_INSTR(0x1a, 0x00),
+ LHR050H41_COMMAND_INSTR(0x1b, 0x00),
+ LHR050H41_COMMAND_INSTR(0x1c, 0x00),
+ LHR050H41_COMMAND_INSTR(0x1d, 0x00),
+ LHR050H41_COMMAND_INSTR(0x1e, 0xC0),
+ LHR050H41_COMMAND_INSTR(0x1f, 0x80),
+ LHR050H41_COMMAND_INSTR(0x20, 0x04),
+ LHR050H41_COMMAND_INSTR(0x21, 0x01),
+ LHR050H41_COMMAND_INSTR(0x22, 0x00),
+ LHR050H41_COMMAND_INSTR(0x23, 0x00),
+ LHR050H41_COMMAND_INSTR(0x24, 0x00),
+ LHR050H41_COMMAND_INSTR(0x25, 0x00),
+ LHR050H41_COMMAND_INSTR(0x26, 0x00),
+ LHR050H41_COMMAND_INSTR(0x27, 0x00),
+ LHR050H41_COMMAND_INSTR(0x28, 0x33),
+ LHR050H41_COMMAND_INSTR(0x29, 0x03),
+ LHR050H41_COMMAND_INSTR(0x2a, 0x00),
+ LHR050H41_COMMAND_INSTR(0x2b, 0x00),
+ LHR050H41_COMMAND_INSTR(0x2c, 0x00),
+ LHR050H41_COMMAND_INSTR(0x2d, 0x00),
+ LHR050H41_COMMAND_INSTR(0x2e, 0x00),
+ LHR050H41_COMMAND_INSTR(0x2f, 0x00),
+ LHR050H41_COMMAND_INSTR(0x30, 0x00),
+ LHR050H41_COMMAND_INSTR(0x31, 0x00),
+ LHR050H41_COMMAND_INSTR(0x32, 0x00),
+ LHR050H41_COMMAND_INSTR(0x33, 0x00),
+ LHR050H41_COMMAND_INSTR(0x34, 0x04),
+ LHR050H41_COMMAND_INSTR(0x35, 0x00),
+ LHR050H41_COMMAND_INSTR(0x36, 0x00),
+ LHR050H41_COMMAND_INSTR(0x37, 0x00),
+ LHR050H41_COMMAND_INSTR(0x38, 0x3C),
+ LHR050H41_COMMAND_INSTR(0x39, 0x00),
+ LHR050H41_COMMAND_INSTR(0x3a, 0x00),
+ LHR050H41_COMMAND_INSTR(0x3b, 0x00),
+ LHR050H41_COMMAND_INSTR(0x3c, 0x00),
+ LHR050H41_COMMAND_INSTR(0x3d, 0x00),
+ LHR050H41_COMMAND_INSTR(0x3e, 0x00),
+ LHR050H41_COMMAND_INSTR(0x3f, 0x00),
+ LHR050H41_COMMAND_INSTR(0x40, 0x00),
+ LHR050H41_COMMAND_INSTR(0x41, 0x00),
+ LHR050H41_COMMAND_INSTR(0x42, 0x00),
+ LHR050H41_COMMAND_INSTR(0x43, 0x00),
+ LHR050H41_COMMAND_INSTR(0x44, 0x00),
+ LHR050H41_COMMAND_INSTR(0x50, 0x01),
+ LHR050H41_COMMAND_INSTR(0x51, 0x23),
+ LHR050H41_COMMAND_INSTR(0x52, 0x45),
+ LHR050H41_COMMAND_INSTR(0x53, 0x67),
+ LHR050H41_COMMAND_INSTR(0x54, 0x89),
+ LHR050H41_COMMAND_INSTR(0x55, 0xab),
+ LHR050H41_COMMAND_INSTR(0x56, 0x01),
+ LHR050H41_COMMAND_INSTR(0x57, 0x23),
+ LHR050H41_COMMAND_INSTR(0x58, 0x45),
+ LHR050H41_COMMAND_INSTR(0x59, 0x67),
+ LHR050H41_COMMAND_INSTR(0x5a, 0x89),
+ LHR050H41_COMMAND_INSTR(0x5b, 0xab),
+ LHR050H41_COMMAND_INSTR(0x5c, 0xcd),
+ LHR050H41_COMMAND_INSTR(0x5d, 0xef),
+ LHR050H41_COMMAND_INSTR(0x5e, 0x11),
+ LHR050H41_COMMAND_INSTR(0x5f, 0x02),
+ LHR050H41_COMMAND_INSTR(0x60, 0x02),
+ LHR050H41_COMMAND_INSTR(0x61, 0x02),
+ LHR050H41_COMMAND_INSTR(0x62, 0x02),
+ LHR050H41_COMMAND_INSTR(0x63, 0x02),
+ LHR050H41_COMMAND_INSTR(0x64, 0x02),
+ LHR050H41_COMMAND_INSTR(0x65, 0x02),
+ LHR050H41_COMMAND_INSTR(0x66, 0x02),
+ LHR050H41_COMMAND_INSTR(0x67, 0x02),
+ LHR050H41_COMMAND_INSTR(0x68, 0x02),
+ LHR050H41_COMMAND_INSTR(0x69, 0x02),
+ LHR050H41_COMMAND_INSTR(0x6a, 0x0C),
+ LHR050H41_COMMAND_INSTR(0x6b, 0x02),
+ LHR050H41_COMMAND_INSTR(0x6c, 0x0F),
+ LHR050H41_COMMAND_INSTR(0x6d, 0x0E),
+ LHR050H41_COMMAND_INSTR(0x6e, 0x0D),
+ LHR050H41_COMMAND_INSTR(0x6f, 0x06),
+ LHR050H41_COMMAND_INSTR(0x70, 0x07),
+ LHR050H41_COMMAND_INSTR(0x71, 0x02),
+ LHR050H41_COMMAND_INSTR(0x72, 0x02),
+ LHR050H41_COMMAND_INSTR(0x73, 0x02),
+ LHR050H41_COMMAND_INSTR(0x74, 0x02),
+ LHR050H41_COMMAND_INSTR(0x75, 0x02),
+ LHR050H41_COMMAND_INSTR(0x76, 0x02),
+ LHR050H41_COMMAND_INSTR(0x77, 0x02),
+ LHR050H41_COMMAND_INSTR(0x78, 0x02),
+ LHR050H41_COMMAND_INSTR(0x79, 0x02),
+ LHR050H41_COMMAND_INSTR(0x7a, 0x02),
+ LHR050H41_COMMAND_INSTR(0x7b, 0x02),
+ LHR050H41_COMMAND_INSTR(0x7c, 0x02),
+ LHR050H41_COMMAND_INSTR(0x7d, 0x02),
+ LHR050H41_COMMAND_INSTR(0x7e, 0x02),
+ LHR050H41_COMMAND_INSTR(0x7f, 0x02),
+ LHR050H41_COMMAND_INSTR(0x80, 0x0C),
+ LHR050H41_COMMAND_INSTR(0x81, 0x02),
+ LHR050H41_COMMAND_INSTR(0x82, 0x0F),
+ LHR050H41_COMMAND_INSTR(0x83, 0x0E),
+ LHR050H41_COMMAND_INSTR(0x84, 0x0D),
+ LHR050H41_COMMAND_INSTR(0x85, 0x06),
+ LHR050H41_COMMAND_INSTR(0x86, 0x07),
+ LHR050H41_COMMAND_INSTR(0x87, 0x02),
+ LHR050H41_COMMAND_INSTR(0x88, 0x02),
+ LHR050H41_COMMAND_INSTR(0x89, 0x02),
+ LHR050H41_COMMAND_INSTR(0x8A, 0x02),
+ LHR050H41_SWITCH_PAGE_INSTR(4),
+ LHR050H41_COMMAND_INSTR(0x6C, 0x15),
+ LHR050H41_COMMAND_INSTR(0x6E, 0x22),
+ LHR050H41_COMMAND_INSTR(0x6F, 0x33),
+ LHR050H41_COMMAND_INSTR(0x3A, 0xA4),
+ LHR050H41_COMMAND_INSTR(0x8D, 0x0D),
+ LHR050H41_COMMAND_INSTR(0x87, 0xBA),
+ LHR050H41_COMMAND_INSTR(0x26, 0x76),
+ LHR050H41_COMMAND_INSTR(0xB2, 0xD1),
+ LHR050H41_SWITCH_PAGE_INSTR(1),
+ LHR050H41_COMMAND_INSTR(0x22, 0x0A),
+ LHR050H41_COMMAND_INSTR(0x53, 0xDC),
+ LHR050H41_COMMAND_INSTR(0x55, 0xA7),
+ LHR050H41_COMMAND_INSTR(0x50, 0x78),
+ LHR050H41_COMMAND_INSTR(0x51, 0x78),
+ LHR050H41_COMMAND_INSTR(0x31, 0x02),
+ LHR050H41_COMMAND_INSTR(0x60, 0x14),
+ LHR050H41_COMMAND_INSTR(0xA0, 0x2A),
+ LHR050H41_COMMAND_INSTR(0xA1, 0x39),
+ LHR050H41_COMMAND_INSTR(0xA2, 0x46),
+ LHR050H41_COMMAND_INSTR(0xA3, 0x0e),
+ LHR050H41_COMMAND_INSTR(0xA4, 0x12),
+ LHR050H41_COMMAND_INSTR(0xA5, 0x25),
+ LHR050H41_COMMAND_INSTR(0xA6, 0x19),
+ LHR050H41_COMMAND_INSTR(0xA7, 0x1d),
+ LHR050H41_COMMAND_INSTR(0xA8, 0xa6),
+ LHR050H41_COMMAND_INSTR(0xA9, 0x1C),
+ LHR050H41_COMMAND_INSTR(0xAA, 0x29),
+ LHR050H41_COMMAND_INSTR(0xAB, 0x85),
+ LHR050H41_COMMAND_INSTR(0xAC, 0x1C),
+ LHR050H41_COMMAND_INSTR(0xAD, 0x1B),
+ LHR050H41_COMMAND_INSTR(0xAE, 0x51),
+ LHR050H41_COMMAND_INSTR(0xAF, 0x22),
+ LHR050H41_COMMAND_INSTR(0xB0, 0x2d),
+ LHR050H41_COMMAND_INSTR(0xB1, 0x4f),
+ LHR050H41_COMMAND_INSTR(0xB2, 0x59),
+ LHR050H41_COMMAND_INSTR(0xB3, 0x3F),
+ LHR050H41_COMMAND_INSTR(0xC0, 0x2A),
+ LHR050H41_COMMAND_INSTR(0xC1, 0x3a),
+ LHR050H41_COMMAND_INSTR(0xC2, 0x45),
+ LHR050H41_COMMAND_INSTR(0xC3, 0x0e),
+ LHR050H41_COMMAND_INSTR(0xC4, 0x11),
+ LHR050H41_COMMAND_INSTR(0xC5, 0x24),
+ LHR050H41_COMMAND_INSTR(0xC6, 0x1a),
+ LHR050H41_COMMAND_INSTR(0xC7, 0x1c),
+ LHR050H41_COMMAND_INSTR(0xC8, 0xaa),
+ LHR050H41_COMMAND_INSTR(0xC9, 0x1C),
+ LHR050H41_COMMAND_INSTR(0xCA, 0x29),
+ LHR050H41_COMMAND_INSTR(0xCB, 0x96),
+ LHR050H41_COMMAND_INSTR(0xCC, 0x1C),
+ LHR050H41_COMMAND_INSTR(0xCD, 0x1B),
+ LHR050H41_COMMAND_INSTR(0xCE, 0x51),
+ LHR050H41_COMMAND_INSTR(0xCF, 0x22),
+ LHR050H41_COMMAND_INSTR(0xD0, 0x2b),
+ LHR050H41_COMMAND_INSTR(0xD1, 0x4b),
+ LHR050H41_COMMAND_INSTR(0xD2, 0x59),
+ LHR050H41_COMMAND_INSTR(0xD3, 0x3F),
+};
+
+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 };
+ int ret;
+
+ ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int lhr050h41_send_cmd_data(struct lhr050h41 *ctx, u8 cmd, u8 data)
+{
+ u8 buf[2] = { cmd, data };
+ int ret;
+
+ ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int lhr050h41_prepare(struct drm_panel *panel)
+{
+ struct lhr050h41 *ctx = panel_to_lhr050h41(panel);
+ int i, ret;
+
+ /* 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);
+
+ for (i = 0; i < ARRAY_SIZE(lhr050h41_init); i++) {
+ struct lhr050h41_instr *instr = &lhr050h41_init[i];
+
+ if (instr->op == LHR050H41_SWITCH_PAGE)
+ ret = lhr050h41_switch_page(ctx, instr->arg.page);
+ else if (instr->op == LHR050H41_COMMAND)
+ ret = lhr050h41_send_cmd_data(ctx, instr->arg.cmd.cmd,
+ instr->arg.cmd.data);
+
+ if (ret)
+ return ret;
+ }
+
+ ret = lhr050h41_switch_page(ctx, 0);
+ if (ret)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_tear_on(ctx->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+ if (ret)
+ return ret;
+
+ mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
+ if (ret)
+ return ret;
+
+ 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);
+
+ mdelay(120);
+
+ mipi_dsi_dcs_set_display_on(ctx->dsi);
+
+ 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@xxxxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Huarui LHR050H41 LCD Driver");
+MODULE_LICENSE("GPL v2");
--
git-series 0.9.1
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