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1// SPDX-License-Identifier: GPL-2.02/*3 * Mantix MLAF057WE51 5.7" MIPI-DSI panel driver4 *5 * Copyright (C) Purism SPC 20206 */7 8#include <linux/backlight.h>9#include <linux/delay.h>10#include <linux/gpio/consumer.h>11#include <linux/media-bus-format.h>12#include <linux/module.h>13#include <linux/of.h>14#include <linux/regulator/consumer.h>15 16#include <video/mipi_display.h>17 18#include <drm/drm_mipi_dsi.h>19#include <drm/drm_modes.h>20#include <drm/drm_panel.h>21 22#define DRV_NAME "panel-mantix-mlaf057we51"23 24/* Manufacturer specific Commands send via DSI */25#define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x4126#define MANTIX_CMD_INT_CANCEL 0x4c27#define MANTIX_CMD_SPI_FINISH 0x9028 29struct mantix {30 struct device *dev;31 struct drm_panel panel;32 33 struct gpio_desc *reset_gpio;34 struct gpio_desc *tp_rstn_gpio;35 36 struct regulator *avdd;37 struct regulator *avee;38 struct regulator *vddi;39 40 const struct drm_display_mode *default_mode;41};42 43static inline struct mantix *panel_to_mantix(struct drm_panel *panel)44{45 return container_of(panel, struct mantix, panel);46}47 48static void mantix_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)49{50 /*51 * Init sequence was supplied by the panel vendor.52 */53 mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a);54 55 mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_INT_CANCEL, 0x03);56 mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a, 0x03);57 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x80, 0xa9, 0x00);58 59 mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5a, 0x09);60 mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00);61 mipi_dsi_msleep(dsi_ctx, 20);62 63 mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_SPI_FINISH, 0xa5);64 mipi_dsi_generic_write_seq_multi(dsi_ctx, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x00, 0x2f);65 mipi_dsi_msleep(dsi_ctx, 20);66}67 68static int mantix_enable(struct drm_panel *panel)69{70 struct mantix *ctx = panel_to_mantix(panel);71 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);72 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };73 74 mantix_init_sequence(&dsi_ctx);75 if (!dsi_ctx.accum_err)76 dev_dbg(ctx->dev, "Panel init sequence done\n");77 78 mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);79 mipi_dsi_msleep(&dsi_ctx, 20);80 81 mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);82 mipi_dsi_usleep_range(&dsi_ctx, 10000, 12000);83 84 mipi_dsi_turn_on_peripheral_multi(&dsi_ctx);85 86 return dsi_ctx.accum_err;87}88 89static int mantix_disable(struct drm_panel *panel)90{91 struct mantix *ctx = panel_to_mantix(panel);92 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);93 struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };94 95 mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);96 mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);97 98 return dsi_ctx.accum_err;99}100 101static int mantix_unprepare(struct drm_panel *panel)102{103 struct mantix *ctx = panel_to_mantix(panel);104 105 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 1);106 usleep_range(5000, 6000);107 gpiod_set_value_cansleep(ctx->reset_gpio, 1);108 109 regulator_disable(ctx->avee);110 regulator_disable(ctx->avdd);111 /* T11 */112 usleep_range(5000, 6000);113 regulator_disable(ctx->vddi);114 /* T14 */115 msleep(50);116 117 return 0;118}119 120static int mantix_prepare(struct drm_panel *panel)121{122 struct mantix *ctx = panel_to_mantix(panel);123 int ret;124 125 /* Focaltech FT8006P, section 7.3.1 and 7.3.4 */126 dev_dbg(ctx->dev, "Resetting the panel\n");127 ret = regulator_enable(ctx->vddi);128 if (ret < 0) {129 dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret);130 return ret;131 }132 133 /* T1 + T2 */134 usleep_range(8000, 10000);135 136 ret = regulator_enable(ctx->avdd);137 if (ret < 0) {138 dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret);139 return ret;140 }141 142 /* T2d */143 usleep_range(3500, 4000);144 ret = regulator_enable(ctx->avee);145 if (ret < 0) {146 dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret);147 return ret;148 }149 150 /* T3 + T4 + time for voltage to become stable: */151 usleep_range(6000, 7000);152 gpiod_set_value_cansleep(ctx->reset_gpio, 0);153 gpiod_set_value_cansleep(ctx->tp_rstn_gpio, 0);154 155 /* T6 */156 msleep(50);157 158 return 0;159}160 161static const struct drm_display_mode default_mode_mantix = {162 .hdisplay = 720,163 .hsync_start = 720 + 45,164 .hsync_end = 720 + 45 + 14,165 .htotal = 720 + 45 + 14 + 25,166 .vdisplay = 1440,167 .vsync_start = 1440 + 130,168 .vsync_end = 1440 + 130 + 8,169 .vtotal = 1440 + 130 + 8 + 106,170 .clock = 85298,171 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,172 .width_mm = 65,173 .height_mm = 130,174};175 176static const struct drm_display_mode default_mode_ys = {177 .hdisplay = 720,178 .hsync_start = 720 + 45,179 .hsync_end = 720 + 45 + 14,180 .htotal = 720 + 45 + 14 + 25,181 .vdisplay = 1440,182 .vsync_start = 1440 + 175,183 .vsync_end = 1440 + 175 + 8,184 .vtotal = 1440 + 175 + 8 + 50,185 .clock = 85298,186 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,187 .width_mm = 65,188 .height_mm = 130,189};190 191static const u32 mantix_bus_formats[] = {192 MEDIA_BUS_FMT_RGB888_1X24,193};194 195static int mantix_get_modes(struct drm_panel *panel,196 struct drm_connector *connector)197{198 struct mantix *ctx = panel_to_mantix(panel);199 struct drm_display_mode *mode;200 201 mode = drm_mode_duplicate(connector->dev, ctx->default_mode);202 if (!mode) {203 dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",204 ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,205 drm_mode_vrefresh(ctx->default_mode));206 return -ENOMEM;207 }208 209 drm_mode_set_name(mode);210 211 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;212 connector->display_info.width_mm = mode->width_mm;213 connector->display_info.height_mm = mode->height_mm;214 drm_mode_probed_add(connector, mode);215 216 drm_display_info_set_bus_formats(&connector->display_info,217 mantix_bus_formats,218 ARRAY_SIZE(mantix_bus_formats));219 220 return 1;221}222 223static const struct drm_panel_funcs mantix_drm_funcs = {224 .disable = mantix_disable,225 .unprepare = mantix_unprepare,226 .prepare = mantix_prepare,227 .enable = mantix_enable,228 .get_modes = mantix_get_modes,229};230 231static int mantix_probe(struct mipi_dsi_device *dsi)232{233 struct device *dev = &dsi->dev;234 struct mantix *ctx;235 int ret;236 237 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);238 if (!ctx)239 return -ENOMEM;240 ctx->default_mode = of_device_get_match_data(dev);241 242 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);243 if (IS_ERR(ctx->reset_gpio)) {244 dev_err(dev, "cannot get reset gpio\n");245 return PTR_ERR(ctx->reset_gpio);246 }247 248 ctx->tp_rstn_gpio = devm_gpiod_get(dev, "mantix,tp-rstn", GPIOD_OUT_HIGH);249 if (IS_ERR(ctx->tp_rstn_gpio)) {250 dev_err(dev, "cannot get tp-rstn gpio\n");251 return PTR_ERR(ctx->tp_rstn_gpio);252 }253 254 mipi_dsi_set_drvdata(dsi, ctx);255 ctx->dev = dev;256 257 dsi->lanes = 4;258 dsi->format = MIPI_DSI_FMT_RGB888;259 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |260 MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;261 262 ctx->avdd = devm_regulator_get(dev, "avdd");263 if (IS_ERR(ctx->avdd))264 return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n");265 266 ctx->avee = devm_regulator_get(dev, "avee");267 if (IS_ERR(ctx->avee))268 return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n");269 270 ctx->vddi = devm_regulator_get(dev, "vddi");271 if (IS_ERR(ctx->vddi))272 return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n");273 274 drm_panel_init(&ctx->panel, dev, &mantix_drm_funcs,275 DRM_MODE_CONNECTOR_DSI);276 277 ret = drm_panel_of_backlight(&ctx->panel);278 if (ret)279 return ret;280 281 drm_panel_add(&ctx->panel);282 283 ret = mipi_dsi_attach(dsi);284 if (ret < 0) {285 dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret);286 drm_panel_remove(&ctx->panel);287 return ret;288 }289 290 dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",291 ctx->default_mode->hdisplay, ctx->default_mode->vdisplay,292 drm_mode_vrefresh(ctx->default_mode),293 mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);294 295 return 0;296}297 298static void mantix_shutdown(struct mipi_dsi_device *dsi)299{300 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);301 302 drm_panel_unprepare(&ctx->panel);303 drm_panel_disable(&ctx->panel);304}305 306static void mantix_remove(struct mipi_dsi_device *dsi)307{308 struct mantix *ctx = mipi_dsi_get_drvdata(dsi);309 310 mantix_shutdown(dsi);311 312 mipi_dsi_detach(dsi);313 drm_panel_remove(&ctx->panel);314}315 316static const struct of_device_id mantix_of_match[] = {317 { .compatible = "mantix,mlaf057we51-x", .data = &default_mode_mantix },318 { .compatible = "ys,ys57pss36bh5gq", .data = &default_mode_ys },319 { /* sentinel */ }320};321MODULE_DEVICE_TABLE(of, mantix_of_match);322 323static struct mipi_dsi_driver mantix_driver = {324 .probe = mantix_probe,325 .remove = mantix_remove,326 .shutdown = mantix_shutdown,327 .driver = {328 .name = DRV_NAME,329 .of_match_table = mantix_of_match,330 },331};332module_mipi_dsi_driver(mantix_driver);333 334MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>");335MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel");336MODULE_LICENSE("GPL v2");337