diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 2b9d6db..b0fd26d 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -812,1 +812,13 @@ config DRM_PANEL_CWD50 + +config DRM_PANEL_CWU50 + tristate "CWU50 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 CWU50 panel. + The panel has a 720x1280 resolution and uses 24 bit RGB per pixel. + + To compile this driver as a module, choose M here: the module + will be called panel-cwu50. endmenu diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index ff16978..01733a2 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -82,1 +82,2 @@ obj-$(CONFIG_DRM_PANEL_VISIONOX_RM69299) += panel-visionox-rm69299.o obj-$(CONFIG_DRM_PANEL_WIDECHIPS_WS2401) += panel-widechips-ws2401.o +obj-$(CONFIG_DRM_PANEL_CWU50) += panel-cwu50.o diff --git b/drivers/gpu/drm/panel/panel-cwu50.c b/drivers/gpu/drm/panel/panel-cwu50.c new file mode 100644 index 0000000..495d6ba --- /dev/null +++ b/drivers/gpu/drm/panel/panel-cwu50.c @@ -0,0 +1,484 @@ +/* + * SPDX-License-Identifier: GPL-2.0+ + * Copyright (c) 2021 Clockwork Tech LLC + * Copyright (c) 2021 Max Fierke + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct cwu50 { + struct device *dev; + struct drm_panel panel; + struct regulator *supply; + struct gpio_desc *enable_gpio; + struct gpio_desc *reset_gpio; + struct backlight_device *backlight; + bool prepared; + bool enabled; + enum drm_panel_orientation orientation; +}; + +static const struct drm_display_mode default_mode = { + .clock = 62500, + .hdisplay = 720, + .hsync_start = 720 + 43, + .hsync_end = 720+ 43 + 20, + .htotal = 720 + 43 + 20 + 20, + .vdisplay = 1280, + .vsync_start = 1280 + 8, + .vsync_end = 1280 + 8+ 2, + .vtotal = 1280 + 8 + 2 + 16, +}; + +static inline struct cwu50 *panel_to_cwu50(struct drm_panel *panel) +{ + return container_of(panel, struct cwu50, panel); +} + +#define dcs_write_seq(dsi, seq...) \ +({ \ + struct mipi_dsi_device *dsi_tmp = dsi; \ + static const u8 seq_tmp[] = { seq }; \ + mipi_dsi_dcs_write_buffer(dsi_tmp, seq_tmp, ARRAY_SIZE(seq_tmp)); \ +}) + +static void cwu50_init_sequence(struct cwu50 *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + dcs_write_seq(dsi, 0xE1, 0x93); + dcs_write_seq(dsi, 0xE2, 0x65); + dcs_write_seq(dsi, 0xE3, 0xF8); + dcs_write_seq(dsi, 0x70, 0x20); + dcs_write_seq(dsi, 0x71, 0x13); + dcs_write_seq(dsi, 0x72, 0x06); + dcs_write_seq(dsi, 0x75, 0x03); + dcs_write_seq(dsi, 0xE0, 0x01); + dcs_write_seq(dsi, 0x00, 0x00); + dcs_write_seq(dsi, 0x01, 0x47);//VCOM0x47 + dcs_write_seq(dsi, 0x03, 0x00); + dcs_write_seq(dsi, 0x04, 0x4D); + dcs_write_seq(dsi, 0x0C, 0x64); + dcs_write_seq(dsi, 0x17, 0x00); + dcs_write_seq(dsi, 0x18, 0xBF); + dcs_write_seq(dsi, 0x19, 0x00); + dcs_write_seq(dsi, 0x1A, 0x00); + dcs_write_seq(dsi, 0x1B, 0xBF); + dcs_write_seq(dsi, 0x1C, 0x00); + dcs_write_seq(dsi, 0x1F, 0x7E); + dcs_write_seq(dsi, 0x20, 0x24); + dcs_write_seq(dsi, 0x21, 0x24); + dcs_write_seq(dsi, 0x22, 0x4E); + dcs_write_seq(dsi, 0x24, 0xFE); + dcs_write_seq(dsi, 0x37, 0x09); + dcs_write_seq(dsi, 0x38, 0x04); + dcs_write_seq(dsi, 0x3C, 0x76); + dcs_write_seq(dsi, 0x3D, 0xFF); + dcs_write_seq(dsi, 0x3E, 0xFF); + dcs_write_seq(dsi, 0x3F, 0x7F); + dcs_write_seq(dsi, 0x40, 0x04);//Dot inversion type + dcs_write_seq(dsi, 0x41, 0xA0); + dcs_write_seq(dsi, 0x44, 0x11); + dcs_write_seq(dsi, 0x55, 0x02); + dcs_write_seq(dsi, 0x56, 0x01); + dcs_write_seq(dsi, 0x57, 0x49); + dcs_write_seq(dsi, 0x58, 0x09); + dcs_write_seq(dsi, 0x59, 0x2A); + dcs_write_seq(dsi, 0x5A, 0x1A); + dcs_write_seq(dsi, 0x5B, 0x1A); + dcs_write_seq(dsi, 0x5D, 0x78); + dcs_write_seq(dsi, 0x5E, 0x6E); + dcs_write_seq(dsi, 0x5F, 0x66); + dcs_write_seq(dsi, 0x60, 0x5E); + dcs_write_seq(dsi, 0x61, 0x60); + dcs_write_seq(dsi, 0x62, 0x54); + dcs_write_seq(dsi, 0x63, 0x5C); + dcs_write_seq(dsi, 0x64, 0x47); + dcs_write_seq(dsi, 0x65, 0x5F); + dcs_write_seq(dsi, 0x66, 0x5D); + dcs_write_seq(dsi, 0x67, 0x5B); + dcs_write_seq(dsi, 0x68, 0x76); + dcs_write_seq(dsi, 0x69, 0x61); + dcs_write_seq(dsi, 0x6A, 0x63); + dcs_write_seq(dsi, 0x6B, 0x50); + dcs_write_seq(dsi, 0x6C, 0x45); + dcs_write_seq(dsi, 0x6D, 0x34); + dcs_write_seq(dsi, 0x6E, 0x1C); + dcs_write_seq(dsi, 0x6F, 0x07); + dcs_write_seq(dsi, 0x70, 0x78); + dcs_write_seq(dsi, 0x71, 0x6E); + dcs_write_seq(dsi, 0x72, 0x66); + dcs_write_seq(dsi, 0x73, 0x5E); + dcs_write_seq(dsi, 0x74, 0x60); + dcs_write_seq(dsi, 0x75, 0x54); + dcs_write_seq(dsi, 0x76, 0x5C); + dcs_write_seq(dsi, 0x77, 0x47); + dcs_write_seq(dsi, 0x78, 0x5F); + dcs_write_seq(dsi, 0x79, 0x5D); + dcs_write_seq(dsi, 0x7A, 0x5B); + dcs_write_seq(dsi, 0x7B, 0x76); + dcs_write_seq(dsi, 0x7C, 0x61); + dcs_write_seq(dsi, 0x7D, 0x63); + dcs_write_seq(dsi, 0x7E, 0x50); + dcs_write_seq(dsi, 0x7F, 0x45); + dcs_write_seq(dsi, 0x80, 0x34); + dcs_write_seq(dsi, 0x81, 0x1C); + dcs_write_seq(dsi, 0x82, 0x07); + dcs_write_seq(dsi, 0xE0, 0x02); + dcs_write_seq(dsi, 0x00, 0x44); + dcs_write_seq(dsi, 0x01, 0x46); + dcs_write_seq(dsi, 0x02, 0x48); + dcs_write_seq(dsi, 0x03, 0x4A); + dcs_write_seq(dsi, 0x04, 0x40); + dcs_write_seq(dsi, 0x05, 0x42); + dcs_write_seq(dsi, 0x06, 0x1F); + dcs_write_seq(dsi, 0x07, 0x1F); + dcs_write_seq(dsi, 0x08, 0x1F); + dcs_write_seq(dsi, 0x09, 0x1F); + dcs_write_seq(dsi, 0x0A, 0x1F); + dcs_write_seq(dsi, 0x0B, 0x1F); + dcs_write_seq(dsi, 0x0C, 0x1F); + dcs_write_seq(dsi, 0x0D, 0x1F); + dcs_write_seq(dsi, 0x0E, 0x1F); + dcs_write_seq(dsi, 0x0F, 0x1F); + dcs_write_seq(dsi, 0x10, 0x1F); + dcs_write_seq(dsi, 0x11, 0x1F); + dcs_write_seq(dsi, 0x12, 0x1F); + dcs_write_seq(dsi, 0x13, 0x1F); + dcs_write_seq(dsi, 0x14, 0x1E); + dcs_write_seq(dsi, 0x15, 0x1F); + dcs_write_seq(dsi, 0x16, 0x45); + dcs_write_seq(dsi, 0x17, 0x47); + dcs_write_seq(dsi, 0x18, 0x49); + dcs_write_seq(dsi, 0x19, 0x4B); + dcs_write_seq(dsi, 0x1A, 0x41); + dcs_write_seq(dsi, 0x1B, 0x43); + dcs_write_seq(dsi, 0x1C, 0x1F); + dcs_write_seq(dsi, 0x1D, 0x1F); + dcs_write_seq(dsi, 0x1E, 0x1F); + dcs_write_seq(dsi, 0x1F, 0x1F); + dcs_write_seq(dsi, 0x20, 0x1F); + dcs_write_seq(dsi, 0x21, 0x1F); + dcs_write_seq(dsi, 0x22, 0x1F); + dcs_write_seq(dsi, 0x23, 0x1F); + dcs_write_seq(dsi, 0x24, 0x1F); + dcs_write_seq(dsi, 0x25, 0x1F); + dcs_write_seq(dsi, 0x26, 0x1F); + dcs_write_seq(dsi, 0x27, 0x1F); + dcs_write_seq(dsi, 0x28, 0x1F); + dcs_write_seq(dsi, 0x29, 0x1F); + dcs_write_seq(dsi, 0x2A, 0x1E); + dcs_write_seq(dsi, 0x2B, 0x1F); + dcs_write_seq(dsi, 0x2C, 0x0B); + dcs_write_seq(dsi, 0x2D, 0x09); + dcs_write_seq(dsi, 0x2E, 0x07); + dcs_write_seq(dsi, 0x2F, 0x05); + dcs_write_seq(dsi, 0x30, 0x03); + dcs_write_seq(dsi, 0x31, 0x01); + dcs_write_seq(dsi, 0x32, 0x1F); + dcs_write_seq(dsi, 0x33, 0x1F); + dcs_write_seq(dsi, 0x34, 0x1F); + dcs_write_seq(dsi, 0x35, 0x1F); + dcs_write_seq(dsi, 0x36, 0x1F); + dcs_write_seq(dsi, 0x37, 0x1F); + dcs_write_seq(dsi, 0x38, 0x1F); + dcs_write_seq(dsi, 0x39, 0x1F); + dcs_write_seq(dsi, 0x3A, 0x1F); + dcs_write_seq(dsi, 0x3B, 0x1F); + dcs_write_seq(dsi, 0x3C, 0x1F); + dcs_write_seq(dsi, 0x3D, 0x1F); + dcs_write_seq(dsi, 0x3E, 0x1F); + dcs_write_seq(dsi, 0x3F, 0x1F); + dcs_write_seq(dsi, 0x40, 0x1F); + dcs_write_seq(dsi, 0x41, 0x1E); + dcs_write_seq(dsi, 0x42, 0x0A); + dcs_write_seq(dsi, 0x43, 0x08); + dcs_write_seq(dsi, 0x44, 0x06); + dcs_write_seq(dsi, 0x45, 0x04); + dcs_write_seq(dsi, 0x46, 0x02); + dcs_write_seq(dsi, 0x47, 0x00); + dcs_write_seq(dsi, 0x48, 0x1F); + dcs_write_seq(dsi, 0x49, 0x1F); + dcs_write_seq(dsi, 0x4A, 0x1F); + dcs_write_seq(dsi, 0x4B, 0x1F); + dcs_write_seq(dsi, 0x4C, 0x1F); + dcs_write_seq(dsi, 0x4D, 0x1F); + dcs_write_seq(dsi, 0x4E, 0x1F); + dcs_write_seq(dsi, 0x4F, 0x1F); + dcs_write_seq(dsi, 0x50, 0x1F); + dcs_write_seq(dsi, 0x51, 0x1F); + dcs_write_seq(dsi, 0x52, 0x1F); + dcs_write_seq(dsi, 0x53, 0x1F); + dcs_write_seq(dsi, 0x54, 0x1F); + dcs_write_seq(dsi, 0x55, 0x1F); + dcs_write_seq(dsi, 0x56, 0x1F); + dcs_write_seq(dsi, 0x57, 0x1E); + dcs_write_seq(dsi, 0x58, 0x40); + dcs_write_seq(dsi, 0x59, 0x00); + dcs_write_seq(dsi, 0x5A, 0x00); + dcs_write_seq(dsi, 0x5B, 0x30); + dcs_write_seq(dsi, 0x5C, 0x02); + dcs_write_seq(dsi, 0x5D, 0x40); + dcs_write_seq(dsi, 0x5E, 0x01); + dcs_write_seq(dsi, 0x5F, 0x02); + dcs_write_seq(dsi, 0x60, 0x00); + dcs_write_seq(dsi, 0x61, 0x01); + dcs_write_seq(dsi, 0x62, 0x02); + dcs_write_seq(dsi, 0x63, 0x65); + dcs_write_seq(dsi, 0x64, 0x66); + dcs_write_seq(dsi, 0x65, 0x00); + dcs_write_seq(dsi, 0x66, 0x00); + dcs_write_seq(dsi, 0x67, 0x74); + dcs_write_seq(dsi, 0x68, 0x06); + dcs_write_seq(dsi, 0x69, 0x65); + dcs_write_seq(dsi, 0x6A, 0x66); + dcs_write_seq(dsi, 0x6B, 0x10); + dcs_write_seq(dsi, 0x6C, 0x00); + dcs_write_seq(dsi, 0x6D, 0x04); + dcs_write_seq(dsi, 0x6E, 0x04); + dcs_write_seq(dsi, 0x6F, 0x88); + dcs_write_seq(dsi, 0x70, 0x00); + dcs_write_seq(dsi, 0x71, 0x00); + dcs_write_seq(dsi, 0x72, 0x06); + dcs_write_seq(dsi, 0x73, 0x7B); + dcs_write_seq(dsi, 0x74, 0x00); + dcs_write_seq(dsi, 0x75, 0x87); + dcs_write_seq(dsi, 0x76, 0x00); + dcs_write_seq(dsi, 0x77, 0x5D); + dcs_write_seq(dsi, 0x78, 0x17); + dcs_write_seq(dsi, 0x79, 0x1F); + dcs_write_seq(dsi, 0x7A, 0x00); + dcs_write_seq(dsi, 0x7B, 0x00); + dcs_write_seq(dsi, 0x7C, 0x00); + dcs_write_seq(dsi, 0x7D, 0x03); + dcs_write_seq(dsi, 0x7E, 0x7B); + dcs_write_seq(dsi, 0xE0, 0x04); + dcs_write_seq(dsi, 0x09, 0x10); + dcs_write_seq(dsi, 0xE0, 0x00); + dcs_write_seq(dsi, 0xE6, 0x02); + dcs_write_seq(dsi, 0xE7, 0x02); + dcs_write_seq(dsi, 0x11);// SLPOUT + msleep (120); + dcs_write_seq(dsi, 0x29);// DSPON + msleep (20); + dcs_write_seq(dsi, 0x35, 0x00); +} + +static int cwu50_disable(struct drm_panel *panel) +{ + struct cwu50 *ctx = panel_to_cwu50(panel); + + if (!ctx->enabled) + return 0; + + backlight_disable(ctx->backlight); + + ctx->enabled = false; + + return 0; +} + +static int cwu50_unprepare(struct drm_panel *panel) +{ + struct cwu50 *ctx = panel_to_cwu50(panel); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + int ret; + + if (!ctx->prepared) + return 0; + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret) { + dev_err(ctx->dev, "failed to turn display off (%d)\n", ret); + return ret; + } + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret) { + dev_err(ctx->dev, "failed to enter sleep mode (%d)\n", ret); + return ret; + } + msleep(120); + + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + msleep(5); + + ctx->prepared = false; + + return 0; +} + +static int cwu50_prepare(struct drm_panel *panel) +{ + struct cwu50 *ctx = panel_to_cwu50(panel); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + int ret; + + if (ctx->prepared) + return 0; + + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + msleep(10); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + msleep(120); + + /* Enabe tearing mode: send TE (tearing effect) at VBLANK */ + ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK); + if (ret) { + dev_err(ctx->dev, "failed to enable vblank TE (%d)\n", ret); + return ret; + } + /* Exit sleep mode and power on */ + + cwu50_init_sequence(ctx); + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret) { + dev_err(ctx->dev, "failed to exit sleep mode (%d)\n", ret); + return ret; + } + msleep(120); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret) { + dev_err(ctx->dev, "failed to turn display on (%d)\n", ret); + return ret; + } + msleep(20); + + ctx->prepared = true; + + return 0; +} + +static int cwu50_enable(struct drm_panel *panel) +{ + struct cwu50 *ctx = panel_to_cwu50(panel); + + if (ctx->enabled) + return 0; + + backlight_enable(ctx->backlight); + + ctx->enabled = true; + + return 0; +} + +static int cwu50_get_modes(struct drm_panel *panel, struct drm_connector *connector) +{ + struct cwu50 *ctx = panel_to_cwu50(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &default_mode); + if (!mode) { + dev_err(panel->dev, "bad mode or failed to add mode\n"); + return -EINVAL; + } + drm_mode_set_name(mode); + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + + connector->display_info.width_mm = mode->width_mm; + connector->display_info.height_mm = mode->height_mm; + + /* set up connector's "panel orientation" property */ + drm_connector_set_panel_orientation(connector, ctx->orientation); + + drm_mode_probed_add(connector, mode); + + return 1; /* Number of modes */ +} + +static const struct drm_panel_funcs cwu50_drm_funcs = { + .disable = cwu50_disable, + .unprepare = cwu50_unprepare, + .prepare = cwu50_prepare, + .enable = cwu50_enable, + .get_modes = cwu50_get_modes, +}; + +static int cwu50_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct cwu50 *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + mipi_dsi_set_drvdata(dsi, ctx); + ctx->dev = dev; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO |MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; + + ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(ctx->reset_gpio)) { + ret = PTR_ERR(ctx->reset_gpio); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to request GPIO (%d)\n", ret); + return ret; + } + + ctx->backlight = devm_of_find_backlight(dev); + if (IS_ERR(ctx->backlight)) { + return PTR_ERR(ctx->backlight); + } + + ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation); + if (ret) { + dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, ret); + return ret; + } + + drm_panel_init(&ctx->panel, dev, &cwu50_drm_funcs, DRM_MODE_CONNECTOR_DSI); + + drm_panel_add(&ctx->panel); + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + dev_err(dev, "mipi_dsi_attach() failed: %d\n", ret); + drm_panel_remove(&ctx->panel); + return ret; + } + + return 0; +} + +static void cwu50_remove(struct mipi_dsi_device *dsi) +{ + struct cwu50 *ctx = mipi_dsi_get_drvdata(dsi); + + mipi_dsi_detach(dsi); + drm_panel_remove(&ctx->panel); +} + +static const struct of_device_id cwu50_of_match[] = { + { .compatible = "cw,cwu50" }, + { } +}; +MODULE_DEVICE_TABLE(of, cwu50_of_match); + +static struct mipi_dsi_driver cwu50_driver = { + .probe = cwu50_probe, + .remove = cwu50_remove, + .driver = { + .name = "panel-cwu50", + .of_match_table = cwu50_of_match, + }, +}; +module_mipi_dsi_driver(cwu50_driver); + +MODULE_DESCRIPTION("DRM Driver for cwu50 MIPI DSI panel"); +MODULE_LICENSE("GPL v2");