Add support for the OLED display based on MIPI-DSI protocol from Raydium: RM67191.

Signed-off-by: Robert Chiras robert.chiras@nxp.com Signed-off-by: Mirela Rabulea mirela.rabulea@nxp.com --- drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-raydium-rm67191.c | 654 ++++++++++++++++++++++++++ 3 files changed, 664 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-raydium-rm67191.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 25682ff..b0d5678 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -108,6 +108,15 @@ 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 f26efc1..4ebe7b5 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.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-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E3HA2) += panel-samsung-s6e3ha2.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..ee5748d --- /dev/null +++ b/drivers/gpu/drm/panel/panel-raydium-rm67191.c @@ -0,0 +1,654 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * i.MX drm driver - Raydium MIPI-DSI panel driver + * + * Copyright (C) 2017 NXP + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <drm/drmP.h> +#include <drm/drm_crtc.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_panel.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> + +/* 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, +}; + +struct rad_panel { + struct drm_panel base; + struct mipi_dsi_device *dsi; + + struct gpio_desc *reset; + struct backlight_device *backlight; + + bool prepared; + bool enabled; + + struct videomode vm; + u32 width_mm; + u32 height_mm; +}; + +static inline struct rad_panel *to_rad_panel(struct drm_panel *panel) +{ + return container_of(panel, struct rad_panel, base); +} + +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 0x55; + case MIPI_DSI_FMT_RGB666: + case MIPI_DSI_FMT_RGB666_PACKED: + return 0x66; + case MIPI_DSI_FMT_RGB888: + return 0x77; + default: + return 0x77; /* for backward compatibility */ + } +}; + +static int rad_panel_prepare(struct drm_panel *panel) +{ + struct rad_panel *rad = to_rad_panel(panel); + + if (rad->prepared) + return 0; + + if (rad->reset != NULL) { + gpiod_set_value(rad->reset, 0); + usleep_range(5000, 10000); + gpiod_set_value(rad->reset, 1); + usleep_range(20000, 25000); + } + + rad->prepared = true; + + return 0; +} + +static int rad_panel_unprepare(struct drm_panel *panel) +{ + struct rad_panel *rad = to_rad_panel(panel); + struct device *dev = &rad->dsi->dev; + + if (!rad->prepared) + return 0; + + if (rad->enabled) { + DRM_DEV_ERROR(dev, "Panel still enabled!\n"); + return -EPERM; + } + + if (rad->reset != NULL) { + gpiod_set_value(rad->reset, 0); + usleep_range(10000, 15000); + } + + 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; + + if (!rad->prepared) { + DRM_DEV_ERROR(dev, "Panel not prepared!\n"); + return -EPERM; + } + + 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(10000, 15000); + + /* 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; + } + /* Set display brightness */ + ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x20); + if (ret < 0) { + DRM_DEV_ERROR(dev, "Failed to set display brightness (%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, 10000); + + 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: + if (rad->reset != NULL) + gpiod_set_value(rad->reset, 0); + + 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; + + 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; + } + + usleep_range(10000, 15000); + + backlight_disable(rad->backlight); + + rad->enabled = false; + + return 0; +} + +static int rad_panel_get_modes(struct drm_panel *panel) +{ + struct rad_panel *rad = to_rad_panel(panel); + struct device *dev = &rad->dsi->dev; + struct drm_connector *connector = panel->connector; + struct drm_display_mode *mode; + u32 *bus_flags = &connector->display_info.bus_flags; + int ret; + + mode = drm_mode_create(connector->dev); + if (!mode) { + DRM_DEV_ERROR(dev, "Failed to create display mode!\n"); + return 0; + } + + drm_display_mode_from_videomode(&rad->vm, mode); + mode->width_mm = rad->width_mm; + mode->height_mm = rad->height_mm; + connector->display_info.width_mm = rad->width_mm; + connector->display_info.height_mm = rad->height_mm; + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + + if (rad->vm.flags & DISPLAY_FLAGS_DE_HIGH) + *bus_flags |= DRM_BUS_FLAG_DE_HIGH; + if (rad->vm.flags & DISPLAY_FLAGS_DE_LOW) + *bus_flags |= DRM_BUS_FLAG_DE_LOW; + if (rad->vm.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) + *bus_flags |= DRM_BUS_FLAG_PIXDATA_NEGEDGE; + if (rad->vm.flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) + *bus_flags |= DRM_BUS_FLAG_PIXDATA_POSEDGE; + + ret = drm_display_info_set_bus_formats(&connector->display_info, + rad_bus_formats, ARRAY_SIZE(rad_bus_formats)); + if (ret) + return ret; + + drm_mode_probed_add(panel->connector, mode); + + 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; + + DRM_DEV_DEBUG_DRIVER(dev, "\n"); + + 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; + + DRM_DEV_DEBUG_DRIVER(dev, "New brightness: %d\n", bl->props.brightness); + + 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, +}; + +/* + * The clock might range from 66MHz (30Hz refresh rate) + * to 132MHz (60Hz refresh rate) + */ +static const struct display_timing rad_default_timing = { + .pixelclock = { 66000000, 132000000, 132000000 }, + .hactive = { 1080, 1080, 1080 }, + .hfront_porch = { 20, 20, 20 }, + .hsync_len = { 2, 2, 2 }, + .hback_porch = { 34, 34, 34 }, + .vactive = { 1920, 1920, 1920 }, + .vfront_porch = { 10, 10, 10 }, + .vsync_len = { 2, 2, 2 }, + .vback_porch = { 4, 4, 4 }, + .flags = DISPLAY_FLAGS_HSYNC_LOW | + DISPLAY_FLAGS_VSYNC_LOW | + DISPLAY_FLAGS_DE_LOW | + DISPLAY_FLAGS_PIXDATA_NEGEDGE, +}; + +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; + + 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, "dsi-lanes", &dsi->lanes); + if (ret < 0) { + dev_err(dev, "Failed to get dsi-lanes property (%d)\n", ret); + return ret; + } + + videomode_from_timing(&rad_default_timing, &panel->vm); + + of_property_read_u32(np, "panel-width-mm", &panel->width_mm); + of_property_read_u32(np, "panel-height-mm", &panel->height_mm); + + panel->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + + if (IS_ERR(panel->reset)) + panel->reset = NULL; + else + gpiod_set_value(panel->reset, 0); + + + memset(&bl_props, 0, sizeof(bl_props)); + bl_props.type = BACKLIGHT_RAW; + 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; + } + + drm_panel_init(&panel->base); + panel->base.funcs = &rad_panel_funcs; + panel->base.dev = dev; + + ret = drm_panel_add(&panel->base); + + if (ret < 0) + return ret; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) + drm_panel_remove(&panel->base); + + 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 < 0) + DRM_DEV_ERROR(dev, "Failed to detach from host (%d)\n", + ret); + + drm_panel_remove(&rad->base); + + 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->base); + rad_panel_unprepare(&rad->base); +} + +static const struct of_device_id rad_of_match[] = { + { .compatible = "raydium,rm67191", }, + { } +}; +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.chiras@nxp.com"); +MODULE_DESCRIPTION("DRM Driver for Raydium RM67191 MIPI DSI panel"); +MODULE_LICENSE("GPL v2");