172967d56SGuido Günther // SPDX-License-Identifier: GPL-2.0 272967d56SGuido Günther /* 372967d56SGuido Günther * Mantix MLAF057WE51 5.7" MIPI-DSI panel driver 472967d56SGuido Günther * 572967d56SGuido Günther * Copyright (C) Purism SPC 2020 672967d56SGuido Günther */ 772967d56SGuido Günther 872967d56SGuido Günther #include <linux/backlight.h> 972967d56SGuido Günther #include <linux/delay.h> 1072967d56SGuido Günther #include <linux/gpio/consumer.h> 111311f3dfSGuido Günther #include <linux/media-bus-format.h> 1272967d56SGuido Günther #include <linux/module.h> 13722d4f06SRob Herring #include <linux/of.h> 1472967d56SGuido Günther #include <linux/regulator/consumer.h> 1572967d56SGuido Günther 1672967d56SGuido Günther #include <video/mipi_display.h> 1772967d56SGuido Günther 1872967d56SGuido Günther #include <drm/drm_mipi_dsi.h> 1972967d56SGuido Günther #include <drm/drm_modes.h> 2072967d56SGuido Günther #include <drm/drm_panel.h> 2172967d56SGuido Günther 2272967d56SGuido Günther #define DRV_NAME "panel-mantix-mlaf057we51" 2372967d56SGuido Günther 2472967d56SGuido Günther /* Manufacturer specific Commands send via DSI */ 2572967d56SGuido Günther #define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41 26*b61c4bc6STejas Vipin #define MANTIX_CMD_INT_CANCEL 0x4c 27dd396dbcSGuido Günther #define MANTIX_CMD_SPI_FINISH 0x90 2872967d56SGuido Günther 2972967d56SGuido Günther struct mantix { 3072967d56SGuido Günther struct device *dev; 3172967d56SGuido Günther struct drm_panel panel; 32787099f8SGuido Günther 3372967d56SGuido Günther struct gpio_desc *reset_gpio; 34787099f8SGuido Günther struct gpio_desc *tp_rstn_gpio; 3572967d56SGuido Günther 3672967d56SGuido Günther struct regulator *avdd; 3772967d56SGuido Günther struct regulator *avee; 3872967d56SGuido Günther struct regulator *vddi; 396ae5837cSGuido Günther 406ae5837cSGuido Günther const struct drm_display_mode *default_mode; 4172967d56SGuido Günther }; 4272967d56SGuido Günther 4372967d56SGuido Günther static inline struct mantix *panel_to_mantix(struct drm_panel *panel) 4472967d56SGuido Günther { 4572967d56SGuido Günther return container_of(panel, struct mantix, panel); 4672967d56SGuido Günther } 4772967d56SGuido Günther 48e139c0ebSTejas Vipin static void mantix_init_sequence(struct mipi_dsi_multi_context *dsi_ctx) 4972967d56SGuido Günther { 5072967d56SGuido Günther /* 5172967d56SGuido Günther * Init sequence was supplied by the panel vendor. 5272967d56SGuido Günther */ 53*b61c4bc6STejas Vipin mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a); 5472967d56SGuido Günther 55e139c0ebSTejas Vipin mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_INT_CANCEL, 0x03); 56*b61c4bc6STejas Vipin mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a, 0x03); 57*b61c4bc6STejas Vipin mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x80, 0xa9, 0x00); 5872967d56SGuido Günther 59*b61c4bc6STejas Vipin mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a, 0x09); 60e139c0ebSTejas Vipin mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00); 61e139c0ebSTejas Vipin mipi_dsi_msleep(dsi_ctx, 20); 6272967d56SGuido Günther 63*b61c4bc6STejas Vipin mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_SPI_FINISH, 0xa5); 64*b61c4bc6STejas Vipin mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2f); 65e139c0ebSTejas Vipin mipi_dsi_msleep(dsi_ctx, 20); 6672967d56SGuido Günther } 6772967d56SGuido Günther 6872967d56SGuido Günther static int mantix_enable(struct drm_panel *panel) 6972967d56SGuido Günther { 7072967d56SGuido Günther struct mantix *ctx = panel_to_mantix(panel); 71e139c0ebSTejas Vipin struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); 72e139c0ebSTejas Vipin struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; 7372967d56SGuido Günther 74e139c0ebSTejas Vipin mantix_init_sequence(&dsi_ctx); 75e139c0ebSTejas Vipin if (!dsi_ctx.accum_err) 76e139c0ebSTejas Vipin dev_dbg(ctx->dev, "Panel init sequence done\n"); 7772967d56SGuido Günther 78e139c0ebSTejas Vipin mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); 79e139c0ebSTejas Vipin mipi_dsi_msleep(&dsi_ctx, 20); 8072967d56SGuido Günther 81e139c0ebSTejas Vipin mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); 82e139c0ebSTejas Vipin mipi_dsi_usleep_range(&dsi_ctx, 10000, 12000); 8372967d56SGuido Günther 84e139c0ebSTejas Vipin mipi_dsi_turn_on_peripheral_multi(&dsi_ctx); 8572967d56SGuido Günther 86e139c0ebSTejas Vipin return dsi_ctx.accum_err; 8772967d56SGuido Günther } 8872967d56SGuido Günther 8972967d56SGuido Günther static int mantix_disable(struct drm_panel *panel) 9072967d56SGuido Günther { 9172967d56SGuido Günther struct mantix *ctx = panel_to_mantix(panel); 9272967d56SGuido Günther struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); 93e139c0ebSTejas Vipin struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; 9472967d56SGuido Günther 95e139c0ebSTejas Vipin mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); 96e139c0ebSTejas Vipin mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); 9772967d56SGuido Günther 98e139c0ebSTejas Vipin return dsi_ctx.accum_err; 9972967d56SGuido Günther } 10072967d56SGuido Günther 10172967d56SGuido Günther static int mantix_unprepare(struct drm_panel *panel) 10272967d56SGuido Günther { 10372967d56SGuido Günther struct mantix *ctx = panel_to_mantix(panel); 10472967d56SGuido Günther 105787099f8SGuido Günther gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 1); 106787099f8SGuido Günther usleep_range(5000, 6000); 107787099f8SGuido Günther gpiod_set_value_cansleep(ctx->reset_gpio, 1); 108787099f8SGuido Günther 10972967d56SGuido Günther regulator_disable(ctx->avee); 11072967d56SGuido Günther regulator_disable(ctx->avdd); 11172967d56SGuido Günther /* T11 */ 11272967d56SGuido Günther usleep_range(5000, 6000); 11372967d56SGuido Günther regulator_disable(ctx->vddi); 11472967d56SGuido Günther /* T14 */ 11572967d56SGuido Günther msleep(50); 11672967d56SGuido Günther 11772967d56SGuido Günther return 0; 11872967d56SGuido Günther } 11972967d56SGuido Günther 12072967d56SGuido Günther static int mantix_prepare(struct drm_panel *panel) 12172967d56SGuido Günther { 12272967d56SGuido Günther struct mantix *ctx = panel_to_mantix(panel); 12372967d56SGuido Günther int ret; 12472967d56SGuido Günther 12572967d56SGuido Günther /* Focaltech FT8006P, section 7.3.1 and 7.3.4 */ 12672967d56SGuido Günther dev_dbg(ctx->dev, "Resetting the panel\n"); 12772967d56SGuido Günther ret = regulator_enable(ctx->vddi); 12872967d56SGuido Günther if (ret < 0) { 12972967d56SGuido Günther dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret); 13072967d56SGuido Günther return ret; 13172967d56SGuido Günther } 13272967d56SGuido Günther 13372967d56SGuido Günther /* T1 + T2 */ 13472967d56SGuido Günther usleep_range(8000, 10000); 13572967d56SGuido Günther 13672967d56SGuido Günther ret = regulator_enable(ctx->avdd); 13772967d56SGuido Günther if (ret < 0) { 13872967d56SGuido Günther dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret); 13972967d56SGuido Günther return ret; 14072967d56SGuido Günther } 14172967d56SGuido Günther 14272967d56SGuido Günther /* T2d */ 14372967d56SGuido Günther usleep_range(3500, 4000); 14472967d56SGuido Günther ret = regulator_enable(ctx->avee); 14572967d56SGuido Günther if (ret < 0) { 14672967d56SGuido Günther dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret); 14772967d56SGuido Günther return ret; 14872967d56SGuido Günther } 14972967d56SGuido Günther 150787099f8SGuido Günther /* T3 + T4 + time for voltage to become stable: */ 151787099f8SGuido Günther usleep_range(6000, 7000); 15272967d56SGuido Günther gpiod_set_value_cansleep(ctx->reset_gpio, 0); 153787099f8SGuido Günther gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 0); 15472967d56SGuido Günther 15572967d56SGuido Günther /* T6 */ 15672967d56SGuido Günther msleep(50); 15772967d56SGuido Günther 15872967d56SGuido Günther return 0; 15972967d56SGuido Günther } 16072967d56SGuido Günther 1616ae5837cSGuido Günther static const struct drm_display_mode default_mode_mantix = { 16272967d56SGuido Günther .hdisplay = 720, 16372967d56SGuido Günther .hsync_start = 720 + 45, 16472967d56SGuido Günther .hsync_end = 720 + 45 + 14, 16572967d56SGuido Günther .htotal = 720 + 45 + 14 + 25, 16672967d56SGuido Günther .vdisplay = 1440, 16772967d56SGuido Günther .vsync_start = 1440 + 130, 16872967d56SGuido Günther .vsync_end = 1440 + 130 + 8, 16972967d56SGuido Günther .vtotal = 1440 + 130 + 8 + 106, 17072967d56SGuido Günther .clock = 85298, 17172967d56SGuido Günther .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 17272967d56SGuido Günther .width_mm = 65, 17372967d56SGuido Günther .height_mm = 130, 17472967d56SGuido Günther }; 17572967d56SGuido Günther 1764b2b869eSGuido Günther static const struct drm_display_mode default_mode_ys = { 1774b2b869eSGuido Günther .hdisplay = 720, 1784b2b869eSGuido Günther .hsync_start = 720 + 45, 1794b2b869eSGuido Günther .hsync_end = 720 + 45 + 14, 1804b2b869eSGuido Günther .htotal = 720 + 45 + 14 + 25, 1814b2b869eSGuido Günther .vdisplay = 1440, 1824b2b869eSGuido Günther .vsync_start = 1440 + 175, 1834b2b869eSGuido Günther .vsync_end = 1440 + 175 + 8, 1844b2b869eSGuido Günther .vtotal = 1440 + 175 + 8 + 50, 1854b2b869eSGuido Günther .clock = 85298, 1864b2b869eSGuido Günther .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 1874b2b869eSGuido Günther .width_mm = 65, 1884b2b869eSGuido Günther .height_mm = 130, 1894b2b869eSGuido Günther }; 1904b2b869eSGuido Günther 1911311f3dfSGuido Günther static const u32 mantix_bus_formats[] = { 1921311f3dfSGuido Günther MEDIA_BUS_FMT_RGB888_1X24, 1931311f3dfSGuido Günther }; 1941311f3dfSGuido Günther 19572967d56SGuido Günther static int mantix_get_modes(struct drm_panel *panel, 19672967d56SGuido Günther struct drm_connector *connector) 19772967d56SGuido Günther { 19872967d56SGuido Günther struct mantix *ctx = panel_to_mantix(panel); 19972967d56SGuido Günther struct drm_display_mode *mode; 20072967d56SGuido Günther 2016ae5837cSGuido Günther mode = drm_mode_duplicate(connector->dev, ctx->default_mode); 20272967d56SGuido Günther if (!mode) { 20372967d56SGuido Günther dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n", 2046ae5837cSGuido Günther ctx->default_mode->hdisplay, ctx->default_mode->vdisplay, 2056ae5837cSGuido Günther drm_mode_vrefresh(ctx->default_mode)); 20672967d56SGuido Günther return -ENOMEM; 20772967d56SGuido Günther } 20872967d56SGuido Günther 20972967d56SGuido Günther drm_mode_set_name(mode); 21072967d56SGuido Günther 21172967d56SGuido Günther mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 21272967d56SGuido Günther connector->display_info.width_mm = mode->width_mm; 21372967d56SGuido Günther connector->display_info.height_mm = mode->height_mm; 21472967d56SGuido Günther drm_mode_probed_add(connector, mode); 21572967d56SGuido Günther 2161311f3dfSGuido Günther drm_display_info_set_bus_formats(&connector->display_info, 2171311f3dfSGuido Günther mantix_bus_formats, 2181311f3dfSGuido Günther ARRAY_SIZE(mantix_bus_formats)); 2191311f3dfSGuido Günther 22072967d56SGuido Günther return 1; 22172967d56SGuido Günther } 22272967d56SGuido Günther 22372967d56SGuido Günther static const struct drm_panel_funcs mantix_drm_funcs = { 22472967d56SGuido Günther .disable = mantix_disable, 22572967d56SGuido Günther .unprepare = mantix_unprepare, 22672967d56SGuido Günther .prepare = mantix_prepare, 22772967d56SGuido Günther .enable = mantix_enable, 22872967d56SGuido Günther .get_modes = mantix_get_modes, 22972967d56SGuido Günther }; 23072967d56SGuido Günther 23172967d56SGuido Günther static int mantix_probe(struct mipi_dsi_device *dsi) 23272967d56SGuido Günther { 23372967d56SGuido Günther struct device *dev = &dsi->dev; 23472967d56SGuido Günther struct mantix *ctx; 23572967d56SGuido Günther int ret; 23672967d56SGuido Günther 23772967d56SGuido Günther ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 23872967d56SGuido Günther if (!ctx) 23972967d56SGuido Günther return -ENOMEM; 2406ae5837cSGuido Günther ctx->default_mode = of_device_get_match_data(dev); 24172967d56SGuido Günther 242787099f8SGuido Günther ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 24372967d56SGuido Günther if (IS_ERR(ctx->reset_gpio)) { 24472967d56SGuido Günther dev_err(dev, "cannot get reset gpio\n"); 24572967d56SGuido Günther return PTR_ERR(ctx->reset_gpio); 24672967d56SGuido Günther } 24772967d56SGuido Günther 248787099f8SGuido Günther ctx->tp_rstn_gpio = devm_gpiod_get(dev, "mantix,tp-rstn", GPIOD_OUT_HIGH); 249787099f8SGuido Günther if (IS_ERR(ctx->tp_rstn_gpio)) { 250787099f8SGuido Günther dev_err(dev, "cannot get tp-rstn gpio\n"); 251787099f8SGuido Günther return PTR_ERR(ctx->tp_rstn_gpio); 252787099f8SGuido Günther } 253787099f8SGuido Günther 25472967d56SGuido Günther mipi_dsi_set_drvdata(dsi, ctx); 25572967d56SGuido Günther ctx->dev = dev; 25672967d56SGuido Günther 25772967d56SGuido Günther dsi->lanes = 4; 25872967d56SGuido Günther dsi->format = MIPI_DSI_FMT_RGB888; 25972967d56SGuido Günther dsi->mode_flags = MIPI_DSI_MODE_VIDEO | 26072967d56SGuido Günther MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; 26172967d56SGuido Günther 26272967d56SGuido Günther ctx->avdd = devm_regulator_get(dev, "avdd"); 26372967d56SGuido Günther if (IS_ERR(ctx->avdd)) 26472967d56SGuido Günther return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n"); 26572967d56SGuido Günther 26672967d56SGuido Günther ctx->avee = devm_regulator_get(dev, "avee"); 26772967d56SGuido Günther if (IS_ERR(ctx->avee)) 26872967d56SGuido Günther return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n"); 26972967d56SGuido Günther 27072967d56SGuido Günther ctx->vddi = devm_regulator_get(dev, "vddi"); 27172967d56SGuido Günther if (IS_ERR(ctx->vddi)) 27272967d56SGuido Günther return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n"); 27372967d56SGuido Günther 27472967d56SGuido Günther drm_panel_init(&ctx->panel, dev, &mantix_drm_funcs, 27572967d56SGuido Günther DRM_MODE_CONNECTOR_DSI); 27672967d56SGuido Günther 27772967d56SGuido Günther ret = drm_panel_of_backlight(&ctx->panel); 27872967d56SGuido Günther if (ret) 27972967d56SGuido Günther return ret; 28072967d56SGuido Günther 28172967d56SGuido Günther drm_panel_add(&ctx->panel); 28272967d56SGuido Günther 28372967d56SGuido Günther ret = mipi_dsi_attach(dsi); 28472967d56SGuido Günther if (ret < 0) { 28572967d56SGuido Günther dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret); 28672967d56SGuido Günther drm_panel_remove(&ctx->panel); 28772967d56SGuido Günther return ret; 28872967d56SGuido Günther } 28972967d56SGuido Günther 29072967d56SGuido Günther dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n", 2916ae5837cSGuido Günther ctx->default_mode->hdisplay, ctx->default_mode->vdisplay, 2926ae5837cSGuido Günther drm_mode_vrefresh(ctx->default_mode), 29372967d56SGuido Günther mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); 29472967d56SGuido Günther 29572967d56SGuido Günther return 0; 29672967d56SGuido Günther } 29772967d56SGuido Günther 29872967d56SGuido Günther static void mantix_shutdown(struct mipi_dsi_device *dsi) 29972967d56SGuido Günther { 30072967d56SGuido Günther struct mantix *ctx = mipi_dsi_get_drvdata(dsi); 30172967d56SGuido Günther 30272967d56SGuido Günther drm_panel_unprepare(&ctx->panel); 30372967d56SGuido Günther drm_panel_disable(&ctx->panel); 30472967d56SGuido Günther } 30572967d56SGuido Günther 30679abca2bSUwe Kleine-König static void mantix_remove(struct mipi_dsi_device *dsi) 30772967d56SGuido Günther { 30872967d56SGuido Günther struct mantix *ctx = mipi_dsi_get_drvdata(dsi); 30972967d56SGuido Günther 31072967d56SGuido Günther mantix_shutdown(dsi); 31172967d56SGuido Günther 31272967d56SGuido Günther mipi_dsi_detach(dsi); 31372967d56SGuido Günther drm_panel_remove(&ctx->panel); 31472967d56SGuido Günther } 31572967d56SGuido Günther 31672967d56SGuido Günther static const struct of_device_id mantix_of_match[] = { 3176ae5837cSGuido Günther { .compatible = "mantix,mlaf057we51-x", .data = &default_mode_mantix }, 3184b2b869eSGuido Günther { .compatible = "ys,ys57pss36bh5gq", .data = &default_mode_ys }, 31972967d56SGuido Günther { /* sentinel */ } 32072967d56SGuido Günther }; 32172967d56SGuido Günther MODULE_DEVICE_TABLE(of, mantix_of_match); 32272967d56SGuido Günther 32372967d56SGuido Günther static struct mipi_dsi_driver mantix_driver = { 32472967d56SGuido Günther .probe = mantix_probe, 32572967d56SGuido Günther .remove = mantix_remove, 32672967d56SGuido Günther .shutdown = mantix_shutdown, 32772967d56SGuido Günther .driver = { 32872967d56SGuido Günther .name = DRV_NAME, 32972967d56SGuido Günther .of_match_table = mantix_of_match, 33072967d56SGuido Günther }, 33172967d56SGuido Günther }; 33272967d56SGuido Günther module_mipi_dsi_driver(mantix_driver); 33372967d56SGuido Günther 33472967d56SGuido Günther MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>"); 33572967d56SGuido Günther MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel"); 33672967d56SGuido Günther MODULE_LICENSE("GPL v2"); 337