1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree. 4 * Copyright (c) 2023 Linaro Limited 5 */ 6 7 #include <linux/backlight.h> 8 #include <linux/delay.h> 9 #include <linux/gpio/consumer.h> 10 #include <linux/module.h> 11 #include <linux/of.h> 12 #include <linux/regulator/consumer.h> 13 14 #include <drm/display/drm_dsc.h> 15 #include <drm/display/drm_dsc_helper.h> 16 #include <drm/drm_mipi_dsi.h> 17 #include <drm/drm_modes.h> 18 #include <drm/drm_panel.h> 19 20 struct rm692e5_panel { 21 struct drm_panel panel; 22 struct mipi_dsi_device *dsi; 23 struct drm_dsc_config dsc; 24 struct regulator_bulk_data supplies[3]; 25 struct gpio_desc *reset_gpio; 26 bool prepared; 27 }; 28 29 static inline struct rm692e5_panel *to_rm692e5_panel(struct drm_panel *panel) 30 { 31 return container_of(panel, struct rm692e5_panel, panel); 32 } 33 34 static void rm692e5_reset(struct rm692e5_panel *ctx) 35 { 36 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 37 usleep_range(10000, 11000); 38 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 39 usleep_range(5000, 6000); 40 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 41 usleep_range(10000, 11000); 42 } 43 44 static int rm692e5_on(struct rm692e5_panel *ctx) 45 { 46 struct mipi_dsi_device *dsi = ctx->dsi; 47 struct device *dev = &dsi->dev; 48 int ret; 49 50 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 51 52 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x41); 53 mipi_dsi_generic_write_seq(dsi, 0xd6, 0x00); 54 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x16); 55 mipi_dsi_generic_write_seq(dsi, 0x8a, 0x87); 56 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x71); 57 mipi_dsi_generic_write_seq(dsi, 0x82, 0x01); 58 mipi_dsi_generic_write_seq(dsi, 0xc6, 0x00); 59 mipi_dsi_generic_write_seq(dsi, 0xc7, 0x2c); 60 mipi_dsi_generic_write_seq(dsi, 0xc8, 0x64); 61 mipi_dsi_generic_write_seq(dsi, 0xc9, 0x3c); 62 mipi_dsi_generic_write_seq(dsi, 0xca, 0x80); 63 mipi_dsi_generic_write_seq(dsi, 0xcb, 0x02); 64 mipi_dsi_generic_write_seq(dsi, 0xcc, 0x02); 65 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38); 66 mipi_dsi_generic_write_seq(dsi, 0x18, 0x13); 67 mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4); 68 mipi_dsi_generic_write_seq(dsi, 0x00, 0xff); 69 mipi_dsi_generic_write_seq(dsi, 0x01, 0xff); 70 mipi_dsi_generic_write_seq(dsi, 0x02, 0xcf); 71 mipi_dsi_generic_write_seq(dsi, 0x03, 0xbc); 72 mipi_dsi_generic_write_seq(dsi, 0x04, 0xb9); 73 mipi_dsi_generic_write_seq(dsi, 0x05, 0x99); 74 mipi_dsi_generic_write_seq(dsi, 0x06, 0x02); 75 mipi_dsi_generic_write_seq(dsi, 0x07, 0x0a); 76 mipi_dsi_generic_write_seq(dsi, 0x08, 0xe0); 77 mipi_dsi_generic_write_seq(dsi, 0x09, 0x4c); 78 mipi_dsi_generic_write_seq(dsi, 0x0a, 0xeb); 79 mipi_dsi_generic_write_seq(dsi, 0x0b, 0xe8); 80 mipi_dsi_generic_write_seq(dsi, 0x0c, 0x32); 81 mipi_dsi_generic_write_seq(dsi, 0x0d, 0x07); 82 mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4); 83 mipi_dsi_generic_write_seq(dsi, 0x0d, 0xc0); 84 mipi_dsi_generic_write_seq(dsi, 0x0e, 0xff); 85 mipi_dsi_generic_write_seq(dsi, 0x0f, 0xff); 86 mipi_dsi_generic_write_seq(dsi, 0x10, 0x33); 87 mipi_dsi_generic_write_seq(dsi, 0x11, 0x6f); 88 mipi_dsi_generic_write_seq(dsi, 0x12, 0x6e); 89 mipi_dsi_generic_write_seq(dsi, 0x13, 0xa6); 90 mipi_dsi_generic_write_seq(dsi, 0x14, 0x80); 91 mipi_dsi_generic_write_seq(dsi, 0x15, 0x02); 92 mipi_dsi_generic_write_seq(dsi, 0x16, 0x38); 93 mipi_dsi_generic_write_seq(dsi, 0x17, 0xd3); 94 mipi_dsi_generic_write_seq(dsi, 0x18, 0x3a); 95 mipi_dsi_generic_write_seq(dsi, 0x19, 0xba); 96 mipi_dsi_generic_write_seq(dsi, 0x1a, 0xcc); 97 mipi_dsi_generic_write_seq(dsi, 0x1b, 0x01); 98 99 ret = mipi_dsi_dcs_nop(dsi); 100 if (ret < 0) { 101 dev_err(dev, "Failed to nop: %d\n", ret); 102 return ret; 103 } 104 msleep(32); 105 106 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38); 107 mipi_dsi_generic_write_seq(dsi, 0x18, 0x13); 108 mipi_dsi_generic_write_seq(dsi, 0xfe, 0xd1); 109 mipi_dsi_generic_write_seq(dsi, 0xd3, 0x00); 110 mipi_dsi_generic_write_seq(dsi, 0xd0, 0x00); 111 mipi_dsi_generic_write_seq(dsi, 0xd2, 0x00); 112 mipi_dsi_generic_write_seq(dsi, 0xd4, 0x00); 113 mipi_dsi_generic_write_seq(dsi, 0xb4, 0x01); 114 mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf9); 115 mipi_dsi_generic_write_seq(dsi, 0x00, 0xaf); 116 mipi_dsi_generic_write_seq(dsi, 0x1d, 0x37); 117 mipi_dsi_generic_write_seq(dsi, 0x44, 0x0a, 0x7b); 118 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00); 119 mipi_dsi_generic_write_seq(dsi, 0xfa, 0x01); 120 mipi_dsi_generic_write_seq(dsi, 0xc2, 0x08); 121 mipi_dsi_generic_write_seq(dsi, 0x35, 0x00); 122 mipi_dsi_generic_write_seq(dsi, 0x51, 0x05, 0x42); 123 124 ret = mipi_dsi_dcs_exit_sleep_mode(dsi); 125 if (ret < 0) { 126 dev_err(dev, "Failed to exit sleep mode: %d\n", ret); 127 return ret; 128 } 129 msleep(100); 130 131 ret = mipi_dsi_dcs_set_display_on(dsi); 132 if (ret < 0) { 133 dev_err(dev, "Failed to set display on: %d\n", ret); 134 return ret; 135 } 136 137 return 0; 138 } 139 140 static int rm692e5_disable(struct drm_panel *panel) 141 { 142 struct rm692e5_panel *ctx = to_rm692e5_panel(panel); 143 struct mipi_dsi_device *dsi = ctx->dsi; 144 struct device *dev = &dsi->dev; 145 int ret; 146 147 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 148 149 mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00); 150 151 ret = mipi_dsi_dcs_set_display_off(dsi); 152 if (ret < 0) { 153 dev_err(dev, "Failed to set display off: %d\n", ret); 154 return ret; 155 } 156 157 ret = mipi_dsi_dcs_enter_sleep_mode(dsi); 158 if (ret < 0) { 159 dev_err(dev, "Failed to enter sleep mode: %d\n", ret); 160 return ret; 161 } 162 msleep(100); 163 164 return 0; 165 } 166 167 static int rm692e5_prepare(struct drm_panel *panel) 168 { 169 struct rm692e5_panel *ctx = to_rm692e5_panel(panel); 170 struct drm_dsc_picture_parameter_set pps; 171 struct device *dev = &ctx->dsi->dev; 172 int ret; 173 174 if (ctx->prepared) 175 return 0; 176 177 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 178 if (ret < 0) { 179 dev_err(dev, "Failed to enable regulators: %d\n", ret); 180 return ret; 181 } 182 183 rm692e5_reset(ctx); 184 185 ret = rm692e5_on(ctx); 186 if (ret < 0) { 187 dev_err(dev, "Failed to initialize panel: %d\n", ret); 188 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 189 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 190 return ret; 191 } 192 193 drm_dsc_pps_payload_pack(&pps, &ctx->dsc); 194 195 ret = mipi_dsi_picture_parameter_set(ctx->dsi, &pps); 196 if (ret < 0) { 197 dev_err(panel->dev, "failed to transmit PPS: %d\n", ret); 198 return ret; 199 } 200 201 ret = mipi_dsi_compression_mode(ctx->dsi, true); 202 if (ret < 0) { 203 dev_err(dev, "failed to enable compression mode: %d\n", ret); 204 return ret; 205 } 206 207 msleep(28); 208 209 mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x40); 210 211 /* 0x05 -> 90Hz, 0x00 -> 60Hz */ 212 mipi_dsi_generic_write_seq(ctx->dsi, 0xbd, 0x05); 213 214 mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x00); 215 216 ctx->prepared = true; 217 218 return 0; 219 } 220 221 static int rm692e5_unprepare(struct drm_panel *panel) 222 { 223 struct rm692e5_panel *ctx = to_rm692e5_panel(panel); 224 225 if (!ctx->prepared) 226 return 0; 227 228 gpiod_set_value_cansleep(ctx->reset_gpio, 1); 229 regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 230 231 ctx->prepared = false; 232 return 0; 233 } 234 235 static const struct drm_display_mode rm692e5_mode = { 236 .clock = (1224 + 32 + 8 + 8) * (2700 + 8 + 2 + 8) * 90 / 1000, 237 .hdisplay = 1224, 238 .hsync_start = 1224 + 32, 239 .hsync_end = 1224 + 32 + 8, 240 .htotal = 1224 + 32 + 8 + 8, 241 .vdisplay = 2700, 242 .vsync_start = 2700 + 8, 243 .vsync_end = 2700 + 8 + 2, 244 .vtotal = 2700 + 8 + 2 + 8, 245 .width_mm = 68, 246 .height_mm = 150, 247 }; 248 249 static int rm692e5_get_modes(struct drm_panel *panel, 250 struct drm_connector *connector) 251 { 252 struct drm_display_mode *mode; 253 254 mode = drm_mode_duplicate(connector->dev, &rm692e5_mode); 255 if (!mode) 256 return -ENOMEM; 257 258 drm_mode_set_name(mode); 259 260 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 261 connector->display_info.width_mm = mode->width_mm; 262 connector->display_info.height_mm = mode->height_mm; 263 drm_mode_probed_add(connector, mode); 264 265 return 1; 266 } 267 268 static const struct drm_panel_funcs rm692e5_panel_funcs = { 269 .prepare = rm692e5_prepare, 270 .unprepare = rm692e5_unprepare, 271 .disable = rm692e5_disable, 272 .get_modes = rm692e5_get_modes, 273 }; 274 275 static int rm692e5_bl_update_status(struct backlight_device *bl) 276 { 277 struct mipi_dsi_device *dsi = bl_get_data(bl); 278 u16 brightness = backlight_get_brightness(bl); 279 int ret; 280 281 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 282 283 ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); 284 if (ret < 0) 285 return ret; 286 287 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 288 289 return 0; 290 } 291 292 static int rm692e5_bl_get_brightness(struct backlight_device *bl) 293 { 294 struct mipi_dsi_device *dsi = bl_get_data(bl); 295 u16 brightness; 296 int ret; 297 298 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; 299 300 ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness); 301 if (ret < 0) 302 return ret; 303 304 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 305 306 return brightness; 307 } 308 309 static const struct backlight_ops rm692e5_bl_ops = { 310 .update_status = rm692e5_bl_update_status, 311 .get_brightness = rm692e5_bl_get_brightness, 312 }; 313 314 static struct backlight_device * 315 rm692e5_create_backlight(struct mipi_dsi_device *dsi) 316 { 317 struct device *dev = &dsi->dev; 318 const struct backlight_properties props = { 319 .type = BACKLIGHT_RAW, 320 .brightness = 4095, 321 .max_brightness = 4095, 322 }; 323 324 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, 325 &rm692e5_bl_ops, &props); 326 } 327 328 static int rm692e5_probe(struct mipi_dsi_device *dsi) 329 { 330 struct device *dev = &dsi->dev; 331 struct rm692e5_panel *ctx; 332 int ret; 333 334 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 335 if (!ctx) 336 return -ENOMEM; 337 338 ctx->supplies[0].supply = "vddio"; 339 ctx->supplies[1].supply = "dvdd"; 340 ctx->supplies[2].supply = "vci"; 341 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), 342 ctx->supplies); 343 if (ret < 0) 344 return dev_err_probe(dev, ret, "Failed to get regulators\n"); 345 346 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 347 if (IS_ERR(ctx->reset_gpio)) 348 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 349 "Failed to get reset-gpios\n"); 350 351 ctx->dsi = dsi; 352 mipi_dsi_set_drvdata(dsi, ctx); 353 354 dsi->lanes = 4; 355 dsi->format = MIPI_DSI_FMT_RGB888; 356 dsi->mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET | 357 MIPI_DSI_CLOCK_NON_CONTINUOUS; 358 359 drm_panel_init(&ctx->panel, dev, &rm692e5_panel_funcs, 360 DRM_MODE_CONNECTOR_DSI); 361 ctx->panel.prepare_prev_first = true; 362 363 ctx->panel.backlight = rm692e5_create_backlight(dsi); 364 if (IS_ERR(ctx->panel.backlight)) 365 return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), 366 "Failed to create backlight\n"); 367 368 drm_panel_add(&ctx->panel); 369 370 /* This panel only supports DSC; unconditionally enable it */ 371 dsi->dsc = &ctx->dsc; 372 373 /* TODO: Pass slice_per_pkt = 2 */ 374 ctx->dsc.dsc_version_major = 1; 375 ctx->dsc.dsc_version_minor = 1; 376 ctx->dsc.slice_height = 60; 377 ctx->dsc.slice_width = 1224; 378 379 ctx->dsc.slice_count = 1224 / ctx->dsc.slice_width; 380 ctx->dsc.bits_per_component = 8; 381 ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */ 382 ctx->dsc.block_pred_enable = true; 383 384 ret = mipi_dsi_attach(dsi); 385 if (ret < 0) { 386 dev_err(dev, "Failed to attach to DSI host: %d\n", ret); 387 drm_panel_remove(&ctx->panel); 388 return ret; 389 } 390 391 return 0; 392 } 393 394 static void rm692e5_remove(struct mipi_dsi_device *dsi) 395 { 396 struct rm692e5_panel *ctx = mipi_dsi_get_drvdata(dsi); 397 int ret; 398 399 ret = mipi_dsi_detach(dsi); 400 if (ret < 0) 401 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); 402 403 drm_panel_remove(&ctx->panel); 404 } 405 406 static const struct of_device_id rm692e5_of_match[] = { 407 { .compatible = "fairphone,fp5-rm692e5-boe" }, 408 { } 409 }; 410 MODULE_DEVICE_TABLE(of, rm692e5_of_match); 411 412 static struct mipi_dsi_driver rm692e5_driver = { 413 .probe = rm692e5_probe, 414 .remove = rm692e5_remove, 415 .driver = { 416 .name = "panel-rm692e5-boe-amoled", 417 .of_match_table = rm692e5_of_match, 418 }, 419 }; 420 module_mipi_dsi_driver(rm692e5_driver); 421 422 MODULE_DESCRIPTION("DRM driver for rm692e5-equipped DSI panels"); 423 MODULE_LICENSE("GPL"); 424