This patch adds Raydium RM67191 TFT LCD panel driver (MIPI-DSI
protocol).

Signed-off-by: Robert Chiras <robert.chi...@nxp.com>
Reviewed-by: Sam Ravnborg <s...@ravnborg.org>
---
 MAINTAINERS                                   |   6 +
 drivers/gpu/drm/panel/Kconfig                 |   9 +
 drivers/gpu/drm/panel/Makefile                |   1 +
 drivers/gpu/drm/panel/panel-raydium-rm67191.c | 670 ++++++++++++++++++++++++++
 4 files changed, 686 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-raydium-rm67191.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 7a2f487..cd93030e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5089,6 +5089,12 @@ S:       Maintained
 F:     drivers/gpu/drm/qxl/
 F:     include/uapi/drm/qxl_drm.h
 
+DRM DRIVER FOR RAYDIUM RM67191 PANELS
+M:     Robert Chiras <robert.chi...@nxp.com>
+S:     Maintained
+F:     drivers/gpu/drm/panel/panel-raydium-rm67191.c
+F:     Documentation/devicetree/bindings/display/panel/raydium,rm67191.txt
+
 DRM DRIVER FOR RAGE 128 VIDEO CARDS
 S:     Orphan / Obsolete
 F:     drivers/gpu/drm/r128/
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index d9d931a..8be1ac1 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -159,6 +159,15 @@ config DRM_PANEL_RASPBERRYPI_TOUCHSCREEN
          Pi 7" Touchscreen.  To compile this driver as a module,
          choose M here.
 
+config DRM_PANEL_RAYDIUM_RM67191
+       tristate "Raydium RM67191 FHD 1080x1920 DSI video mode panel"
+       depends on OF
+       depends on DRM_MIPI_DSI
+       depends on BACKLIGHT_CLASS_DEVICE
+       help
+         Say Y here if you want to enable support for Raydium RM67191 FHD
+         (1080x1920) DSI panel.
+
 config DRM_PANEL_RAYDIUM_RM68200
        tristate "Raydium RM68200 720x1280 DSI video mode panel"
        depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index fb0cb3a..1fc0f68 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += 
panel-orisetech-otm8009a.o
 obj-$(CONFIG_DRM_PANEL_OSD_OSD101T2587_53TS) += panel-osd-osd101t2587-53ts.o
 obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += 
panel-panasonic-vvx10f034n00.o
 obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += 
panel-raspberrypi-touchscreen.o
+obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o
 obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
 obj-$(CONFIG_DRM_PANEL_ROCKTECH_JH057N00900) += panel-rocktech-jh057n00900.o
 obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
diff --git a/drivers/gpu/drm/panel/panel-raydium-rm67191.c 
b/drivers/gpu/drm/panel/panel-raydium-rm67191.c
new file mode 100644
index 0000000..0773002
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-raydium-rm67191.c
@@ -0,0 +1,670 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Raydium RM67191 MIPI-DSI panel driver
+ *
+ * Copyright 2019 NXP
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.h>
+#include <video/of_videomode.h>
+#include <video/videomode.h>
+
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+
+/* Panel specific color-format bits */
+#define COL_FMT_16BPP 0x55
+#define COL_FMT_18BPP 0x66
+#define COL_FMT_24BPP 0x77
+
+/* Write Manufacture Command Set Control */
+#define WRMAUCCTR 0xFE
+
+/* Manufacturer Command Set pages (CMD2) */
+struct cmd_set_entry {
+       u8 cmd;
+       u8 param;
+};
+
+/*
+ * There is no description in the Reference Manual about these commands.
+ * We received them from vendor, so just use them as is.
+ */
+static const struct cmd_set_entry manufacturer_cmd_set[] = {
+       {0xFE, 0x0B},
+       {0x28, 0x40},
+       {0x29, 0x4F},
+       {0xFE, 0x0E},
+       {0x4B, 0x00},
+       {0x4C, 0x0F},
+       {0x4D, 0x20},
+       {0x4E, 0x40},
+       {0x4F, 0x60},
+       {0x50, 0xA0},
+       {0x51, 0xC0},
+       {0x52, 0xE0},
+       {0x53, 0xFF},
+       {0xFE, 0x0D},
+       {0x18, 0x08},
+       {0x42, 0x00},
+       {0x08, 0x41},
+       {0x46, 0x02},
+       {0x72, 0x09},
+       {0xFE, 0x0A},
+       {0x24, 0x17},
+       {0x04, 0x07},
+       {0x1A, 0x0C},
+       {0x0F, 0x44},
+       {0xFE, 0x04},
+       {0x00, 0x0C},
+       {0x05, 0x08},
+       {0x06, 0x08},
+       {0x08, 0x08},
+       {0x09, 0x08},
+       {0x0A, 0xE6},
+       {0x0B, 0x8C},
+       {0x1A, 0x12},
+       {0x1E, 0xE0},
+       {0x29, 0x93},
+       {0x2A, 0x93},
+       {0x2F, 0x02},
+       {0x31, 0x02},
+       {0x33, 0x05},
+       {0x37, 0x2D},
+       {0x38, 0x2D},
+       {0x3A, 0x1E},
+       {0x3B, 0x1E},
+       {0x3D, 0x27},
+       {0x3F, 0x80},
+       {0x40, 0x40},
+       {0x41, 0xE0},
+       {0x4F, 0x2F},
+       {0x50, 0x1E},
+       {0xFE, 0x06},
+       {0x00, 0xCC},
+       {0x05, 0x05},
+       {0x07, 0xA2},
+       {0x08, 0xCC},
+       {0x0D, 0x03},
+       {0x0F, 0xA2},
+       {0x32, 0xCC},
+       {0x37, 0x05},
+       {0x39, 0x83},
+       {0x3A, 0xCC},
+       {0x41, 0x04},
+       {0x43, 0x83},
+       {0x44, 0xCC},
+       {0x49, 0x05},
+       {0x4B, 0xA2},
+       {0x4C, 0xCC},
+       {0x51, 0x03},
+       {0x53, 0xA2},
+       {0x75, 0xCC},
+       {0x7A, 0x03},
+       {0x7C, 0x83},
+       {0x7D, 0xCC},
+       {0x82, 0x02},
+       {0x84, 0x83},
+       {0x85, 0xEC},
+       {0x86, 0x0F},
+       {0x87, 0xFF},
+       {0x88, 0x00},
+       {0x8A, 0x02},
+       {0x8C, 0xA2},
+       {0x8D, 0xEA},
+       {0x8E, 0x01},
+       {0x8F, 0xE8},
+       {0xFE, 0x06},
+       {0x90, 0x0A},
+       {0x92, 0x06},
+       {0x93, 0xA0},
+       {0x94, 0xA8},
+       {0x95, 0xEC},
+       {0x96, 0x0F},
+       {0x97, 0xFF},
+       {0x98, 0x00},
+       {0x9A, 0x02},
+       {0x9C, 0xA2},
+       {0xAC, 0x04},
+       {0xFE, 0x06},
+       {0xB1, 0x12},
+       {0xB2, 0x17},
+       {0xB3, 0x17},
+       {0xB4, 0x17},
+       {0xB5, 0x17},
+       {0xB6, 0x11},
+       {0xB7, 0x08},
+       {0xB8, 0x09},
+       {0xB9, 0x06},
+       {0xBA, 0x07},
+       {0xBB, 0x17},
+       {0xBC, 0x17},
+       {0xBD, 0x17},
+       {0xBE, 0x17},
+       {0xBF, 0x17},
+       {0xC0, 0x17},
+       {0xC1, 0x17},
+       {0xC2, 0x17},
+       {0xC3, 0x17},
+       {0xC4, 0x0F},
+       {0xC5, 0x0E},
+       {0xC6, 0x00},
+       {0xC7, 0x01},
+       {0xC8, 0x10},
+       {0xFE, 0x06},
+       {0x95, 0xEC},
+       {0x8D, 0xEE},
+       {0x44, 0xEC},
+       {0x4C, 0xEC},
+       {0x32, 0xEC},
+       {0x3A, 0xEC},
+       {0x7D, 0xEC},
+       {0x75, 0xEC},
+       {0x00, 0xEC},
+       {0x08, 0xEC},
+       {0x85, 0xEC},
+       {0xA6, 0x21},
+       {0xA7, 0x05},
+       {0xA9, 0x06},
+       {0x82, 0x06},
+       {0x41, 0x06},
+       {0x7A, 0x07},
+       {0x37, 0x07},
+       {0x05, 0x06},
+       {0x49, 0x06},
+       {0x0D, 0x04},
+       {0x51, 0x04},
+};
+
+static const u32 rad_bus_formats[] = {
+       MEDIA_BUS_FMT_RGB888_1X24,
+       MEDIA_BUS_FMT_RGB666_1X18,
+       MEDIA_BUS_FMT_RGB565_1X16,
+};
+
+static const u32 rad_bus_flags = DRM_BUS_FLAG_DE_LOW |
+                                DRM_BUS_FLAG_PIXDATA_NEGEDGE;
+
+struct rad_panel {
+       struct drm_panel panel;
+       struct mipi_dsi_device *dsi;
+
+       struct gpio_desc *reset;
+       struct backlight_device *backlight;
+
+       struct regulator_bulk_data *supplies;
+       unsigned int num_supplies;
+
+       bool prepared;
+       bool enabled;
+};
+
+static const struct drm_display_mode default_mode = {
+       .clock = 132000,
+       .hdisplay = 1080,
+       .hsync_start = 1080 + 20,
+       .hsync_end = 1080 + 20 + 2,
+       .htotal = 1080 + 20 + 2 + 34,
+       .vdisplay = 1920,
+       .vsync_start = 1920 + 10,
+       .vsync_end = 1920 + 10 + 2,
+       .vtotal = 1920 + 10 + 2 + 4,
+       .vrefresh = 60,
+       .width_mm = 68,
+       .height_mm = 121,
+       .flags = DRM_MODE_FLAG_NHSYNC |
+                DRM_MODE_FLAG_NVSYNC,
+};
+
+static inline struct rad_panel *to_rad_panel(struct drm_panel *panel)
+{
+       return container_of(panel, struct rad_panel, panel);
+}
+
+static int rad_panel_push_cmd_list(struct mipi_dsi_device *dsi)
+{
+       size_t i;
+       size_t count = ARRAY_SIZE(manufacturer_cmd_set);
+       int ret = 0;
+
+       for (i = 0; i < count; i++) {
+               const struct cmd_set_entry *entry = &manufacturer_cmd_set[i];
+               u8 buffer[2] = { entry->cmd, entry->param };
+
+               ret = mipi_dsi_generic_write(dsi, &buffer, sizeof(buffer));
+               if (ret < 0)
+                       return ret;
+       }
+
+       return ret;
+};
+
+static int color_format_from_dsi_format(enum mipi_dsi_pixel_format format)
+{
+       switch (format) {
+       case MIPI_DSI_FMT_RGB565:
+               return COL_FMT_16BPP;
+       case MIPI_DSI_FMT_RGB666:
+       case MIPI_DSI_FMT_RGB666_PACKED:
+               return COL_FMT_18BPP;
+       case MIPI_DSI_FMT_RGB888:
+               return COL_FMT_24BPP;
+       default:
+               return COL_FMT_24BPP; /* for backward compatibility */
+       }
+};
+
+static int rad_panel_prepare(struct drm_panel *panel)
+{
+       struct rad_panel *rad = to_rad_panel(panel);
+       int ret;
+
+       if (rad->prepared)
+               return 0;
+
+       ret = regulator_bulk_enable(rad->num_supplies, rad->supplies);
+       if (ret)
+               return ret;
+
+       if (rad->reset) {
+               gpiod_set_value_cansleep(rad->reset, 1);
+               usleep_range(3000, 5000);
+               gpiod_set_value_cansleep(rad->reset, 0);
+               usleep_range(18000, 20000);
+       }
+
+       rad->prepared = true;
+
+       return 0;
+}
+
+static int rad_panel_unprepare(struct drm_panel *panel)
+{
+       struct rad_panel *rad = to_rad_panel(panel);
+       int ret;
+
+       if (!rad->prepared)
+               return 0;
+
+       /*
+        * Right after asserting the reset, we need to release it, so that the
+        * touch driver can have an active connection with the touch controller
+        * even after the display is turned off.
+        */
+       if (rad->reset) {
+               gpiod_set_value_cansleep(rad->reset, 1);
+               usleep_range(15000, 17000);
+               gpiod_set_value_cansleep(rad->reset, 0);
+       }
+
+       ret = regulator_bulk_disable(rad->num_supplies, rad->supplies);
+       if (ret)
+               return ret;
+
+       rad->prepared = false;
+
+       return 0;
+}
+
+static int rad_panel_enable(struct drm_panel *panel)
+{
+       struct rad_panel *rad = to_rad_panel(panel);
+       struct mipi_dsi_device *dsi = rad->dsi;
+       struct device *dev = &dsi->dev;
+       int color_format = color_format_from_dsi_format(dsi->format);
+       int ret;
+
+       if (rad->enabled)
+               return 0;
+
+       dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+       ret = rad_panel_push_cmd_list(dsi);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to send MCS (%d)\n", ret);
+               goto fail;
+       }
+
+       /* Select User Command Set table (CMD1) */
+       ret = mipi_dsi_generic_write(dsi, (u8[]){ WRMAUCCTR, 0x00 }, 2);
+       if (ret < 0)
+               goto fail;
+
+       /* Software reset */
+       ret = mipi_dsi_dcs_soft_reset(dsi);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to do Software Reset (%d)\n", ret);
+               goto fail;
+       }
+
+       usleep_range(15000, 17000);
+
+       /* Set DSI mode */
+       ret = mipi_dsi_generic_write(dsi, (u8[]){ 0xC2, 0x0B }, 2);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to set DSI mode (%d)\n", ret);
+               goto fail;
+       }
+       /* Set tear ON */
+       ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to set tear ON (%d)\n", ret);
+               goto fail;
+       }
+       /* Set tear scanline */
+       ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x380);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to set tear scanline (%d)\n", ret);
+               goto fail;
+       }
+       /* Set pixel format */
+       ret = mipi_dsi_dcs_set_pixel_format(dsi, color_format);
+       DRM_DEV_DEBUG_DRIVER(dev, "Interface color format set to 0x%x\n",
+                            color_format);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to set pixel format (%d)\n", ret);
+               goto fail;
+       }
+       /* Exit sleep mode */
+       ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to exit sleep mode (%d)\n", ret);
+               goto fail;
+       }
+
+       usleep_range(5000, 7000);
+
+       ret = mipi_dsi_dcs_set_display_on(dsi);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to set display ON (%d)\n", ret);
+               goto fail;
+       }
+
+       backlight_enable(rad->backlight);
+
+       rad->enabled = true;
+
+       return 0;
+
+fail:
+       gpiod_set_value_cansleep(rad->reset, 1);
+
+       return ret;
+}
+
+static int rad_panel_disable(struct drm_panel *panel)
+{
+       struct rad_panel *rad = to_rad_panel(panel);
+       struct mipi_dsi_device *dsi = rad->dsi;
+       struct device *dev = &dsi->dev;
+       int ret;
+
+       if (!rad->enabled)
+               return 0;
+
+       dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+       backlight_disable(rad->backlight);
+
+       usleep_range(10000, 12000);
+
+       ret = mipi_dsi_dcs_set_display_off(dsi);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to set display OFF (%d)\n", ret);
+               return ret;
+       }
+
+       usleep_range(5000, 10000);
+
+       ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+       if (ret < 0) {
+               DRM_DEV_ERROR(dev, "Failed to enter sleep mode (%d)\n", ret);
+               return ret;
+       }
+
+       rad->enabled = false;
+
+       return 0;
+}
+
+static int rad_panel_get_modes(struct drm_panel *panel)
+{
+       struct drm_connector *connector = panel->connector;
+       struct drm_display_mode *mode;
+
+       mode = drm_mode_duplicate(panel->drm, &default_mode);
+       if (!mode) {
+               DRM_DEV_ERROR(panel->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(panel->connector, mode);
+
+       connector->display_info.width_mm = mode->width_mm;
+       connector->display_info.height_mm = mode->height_mm;
+       connector->display_info.bus_flags = rad_bus_flags;
+
+       drm_display_info_set_bus_formats(&connector->display_info,
+                                        rad_bus_formats,
+                                        ARRAY_SIZE(rad_bus_formats));
+       return 1;
+}
+
+static int rad_bl_get_brightness(struct backlight_device *bl)
+{
+       struct mipi_dsi_device *dsi = bl_get_data(bl);
+       struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
+       struct device *dev = &dsi->dev;
+       u16 brightness;
+       int ret;
+
+       if (!rad->prepared)
+               return 0;
+
+       dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+       ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
+       if (ret < 0)
+               return ret;
+
+       bl->props.brightness = brightness;
+
+       return brightness & 0xff;
+}
+
+static int rad_bl_update_status(struct backlight_device *bl)
+{
+       struct mipi_dsi_device *dsi = bl_get_data(bl);
+       struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
+       struct device *dev = &dsi->dev;
+       int ret = 0;
+
+       if (!rad->prepared)
+               return 0;
+
+       dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+       ret = mipi_dsi_dcs_set_display_brightness(dsi, bl->props.brightness);
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+static const struct backlight_ops rad_bl_ops = {
+       .update_status = rad_bl_update_status,
+       .get_brightness = rad_bl_get_brightness,
+};
+
+static const struct drm_panel_funcs rad_panel_funcs = {
+       .prepare = rad_panel_prepare,
+       .unprepare = rad_panel_unprepare,
+       .enable = rad_panel_enable,
+       .disable = rad_panel_disable,
+       .get_modes = rad_panel_get_modes,
+};
+
+static const char * const rad_supply_names[] = {
+       "v3p3",
+       "v1p8",
+};
+
+static int rad_init_regulators(struct rad_panel *rad)
+{
+       struct device *dev = &rad->dsi->dev;
+       int i;
+
+       rad->num_supplies = ARRAY_SIZE(rad_supply_names);
+       rad->supplies = devm_kcalloc(dev, rad->num_supplies,
+                                    sizeof(*rad->supplies), GFP_KERNEL);
+       if (!rad->supplies)
+               return -ENOMEM;
+
+       for (i = 0; i < rad->num_supplies; i++)
+               rad->supplies[i].supply = rad_supply_names[i];
+
+       return devm_regulator_bulk_get(dev, rad->num_supplies, rad->supplies);
+};
+
+static int rad_panel_probe(struct mipi_dsi_device *dsi)
+{
+       struct device *dev = &dsi->dev;
+       struct device_node *np = dev->of_node;
+       struct rad_panel *panel;
+       struct backlight_properties bl_props;
+       int ret;
+       u32 video_mode;
+
+       panel = devm_kzalloc(&dsi->dev, sizeof(*panel), GFP_KERNEL);
+       if (!panel)
+               return -ENOMEM;
+
+       mipi_dsi_set_drvdata(dsi, panel);
+
+       panel->dsi = dsi;
+
+       dsi->format = MIPI_DSI_FMT_RGB888;
+       dsi->mode_flags =  MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO |
+                          MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+       ret = of_property_read_u32(np, "video-mode", &video_mode);
+       if (!ret) {
+               switch (video_mode) {
+               case 0:
+                       /* burst mode */
+                       dsi->mode_flags |= MIPI_DSI_MODE_VIDEO_BURST;
+                       break;
+               case 1:
+                       /* non-burst mode with sync event */
+                       break;
+               case 2:
+                       /* non-burst mode with sync pulse */
+                       dsi->mode_flags |= MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
+                       break;
+               default:
+                       dev_warn(dev, "invalid video mode %d\n", video_mode);
+                       break;
+               }
+       }
+
+       ret = of_property_read_u32(np, "dsi-lanes", &dsi->lanes);
+       if (ret) {
+               dev_err(dev, "Failed to get dsi-lanes property (%d)\n", ret);
+               return ret;
+       }
+
+       panel->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+       if (IS_ERR(panel->reset))
+               return PTR_ERR(panel->reset);
+
+       memset(&bl_props, 0, sizeof(bl_props));
+       bl_props.type = BACKLIGHT_RAW;
+       bl_props.brightness = 255;
+       bl_props.max_brightness = 255;
+
+       panel->backlight = devm_backlight_device_register(dev, dev_name(dev),
+                                                         dev, dsi, &rad_bl_ops,
+                                                         &bl_props);
+       if (IS_ERR(panel->backlight)) {
+               ret = PTR_ERR(panel->backlight);
+               dev_err(dev, "Failed to register backlight (%d)\n", ret);
+               return ret;
+       }
+
+       ret = rad_init_regulators(panel);
+       if (ret)
+               return ret;
+
+       drm_panel_init(&panel->panel);
+       panel->panel.funcs = &rad_panel_funcs;
+       panel->panel.dev = dev;
+       dev_set_drvdata(dev, panel);
+
+       ret = drm_panel_add(&panel->panel);
+       if (ret)
+               return ret;
+
+       ret = mipi_dsi_attach(dsi);
+       if (ret)
+               drm_panel_remove(&panel->panel);
+
+       return ret;
+}
+
+static int rad_panel_remove(struct mipi_dsi_device *dsi)
+{
+       struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
+       struct device *dev = &dsi->dev;
+       int ret;
+
+       ret = mipi_dsi_detach(dsi);
+       if (ret)
+               DRM_DEV_ERROR(dev, "Failed to detach from host (%d)\n",
+                             ret);
+
+       drm_panel_remove(&rad->panel);
+
+       return 0;
+}
+
+static void rad_panel_shutdown(struct mipi_dsi_device *dsi)
+{
+       struct rad_panel *rad = mipi_dsi_get_drvdata(dsi);
+
+       rad_panel_disable(&rad->panel);
+       rad_panel_unprepare(&rad->panel);
+}
+
+static const struct of_device_id rad_of_match[] = {
+       { .compatible = "raydium,rm67191", },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, rad_of_match);
+
+static struct mipi_dsi_driver rad_panel_driver = {
+       .driver = {
+               .name = "panel-raydium-rm67191",
+               .of_match_table = rad_of_match,
+       },
+       .probe = rad_panel_probe,
+       .remove = rad_panel_remove,
+       .shutdown = rad_panel_shutdown,
+};
+module_mipi_dsi_driver(rad_panel_driver);
+
+MODULE_AUTHOR("Robert Chiras <robert.chi...@nxp.com>");
+MODULE_DESCRIPTION("DRM Driver for Raydium RM67191 MIPI DSI panel");
+MODULE_LICENSE("GPL v2");
-- 
2.7.4

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