1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/delay.h> 4 #include <linux/device.h> 5 #include <linux/err.h> 6 #include <linux/errno.h> 7 #include <linux/gpio/consumer.h> 8 #include <linux/kernel.h> 9 #include <linux/mod_devicetable.h> 10 #include <linux/module.h> 11 #include <linux/property.h> 12 #include <linux/regulator/consumer.h> 13 14 #include <drm/drm_mipi_dsi.h> 15 #include <drm/drm_modes.h> 16 #include <drm/drm_panel.h> 17 #include <drm/drm_probe_helper.h> 18 19 #include <video/mipi_display.h> 20 21 struct panel_desc { 22 const struct drm_display_mode *display_mode; 23 unsigned long mode_flags; 24 enum mipi_dsi_pixel_format format; 25 unsigned int lanes; 26 void (*init_sequence)(struct mipi_dsi_multi_context *ctx); 27 }; 28 29 struct ili9806e_panel { 30 struct drm_panel panel; 31 struct mipi_dsi_device *dsi; 32 struct gpio_desc *reset_gpio; 33 struct regulator_bulk_data supplies[2]; 34 const struct panel_desc *desc; 35 enum drm_panel_orientation orientation; 36 }; 37 38 static const char * const regulator_names[] = { 39 "vdd", 40 "vccio", 41 }; 42 43 static inline struct ili9806e_panel *to_ili9806e_panel(struct drm_panel *panel) 44 { 45 return container_of(panel, struct ili9806e_panel, panel); 46 } 47 48 static int ili9806e_power_on(struct ili9806e_panel *ctx) 49 { 50 struct mipi_dsi_device *dsi = ctx->dsi; 51 int ret; 52 53 gpiod_set_value(ctx->reset_gpio, 1); 54 55 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 56 if (ret < 0) { 57 dev_err(&dsi->dev, "regulator bulk enable failed: %d\n", ret); 58 return ret; 59 } 60 61 usleep_range(10000, 20000); 62 gpiod_set_value(ctx->reset_gpio, 0); 63 usleep_range(10000, 20000); 64 65 return 0; 66 } 67 68 static int ili9806e_power_off(struct ili9806e_panel *ctx) 69 { 70 struct mipi_dsi_device *dsi = ctx->dsi; 71 int ret; 72 73 gpiod_set_value(ctx->reset_gpio, 1); 74 75 ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 76 if (ret) 77 dev_err(&dsi->dev, "regulator bulk disable failed: %d\n", ret); 78 79 return ret; 80 } 81 82 static int ili9806e_on(struct ili9806e_panel *ili9806e) 83 { 84 struct mipi_dsi_multi_context ctx = { .dsi = ili9806e->dsi }; 85 86 if (ili9806e->desc->init_sequence) 87 ili9806e->desc->init_sequence(&ctx); 88 89 mipi_dsi_dcs_exit_sleep_mode_multi(&ctx); 90 mipi_dsi_msleep(&ctx, 120); 91 mipi_dsi_dcs_set_display_on_multi(&ctx); 92 93 return ctx.accum_err; 94 } 95 96 static int ili9806e_off(struct ili9806e_panel *panel) 97 { 98 struct mipi_dsi_multi_context ctx = { .dsi = panel->dsi }; 99 100 mipi_dsi_dcs_set_display_off_multi(&ctx); 101 mipi_dsi_dcs_enter_sleep_mode_multi(&ctx); 102 mipi_dsi_msleep(&ctx, 120); 103 104 return ctx.accum_err; 105 } 106 107 static int ili9806e_prepare(struct drm_panel *panel) 108 { 109 struct ili9806e_panel *ctx = to_ili9806e_panel(panel); 110 int ret; 111 112 ret = ili9806e_power_on(ctx); 113 if (ret < 0) 114 return ret; 115 116 ret = ili9806e_on(ctx); 117 if (ret < 0) { 118 ili9806e_power_off(ctx); 119 return ret; 120 } 121 122 return 0; 123 } 124 125 static int ili9806e_unprepare(struct drm_panel *panel) 126 { 127 struct ili9806e_panel *ctx = to_ili9806e_panel(panel); 128 struct mipi_dsi_device *dsi = ctx->dsi; 129 int ret; 130 131 ili9806e_off(ctx); 132 133 ret = ili9806e_power_off(ctx); 134 if (ret < 0) 135 dev_err(&dsi->dev, "power off failed: %d\n", ret); 136 137 return ret; 138 } 139 140 static int ili9806e_get_modes(struct drm_panel *panel, 141 struct drm_connector *connector) 142 { 143 struct ili9806e_panel *ctx = to_ili9806e_panel(panel); 144 const struct drm_display_mode *mode = ctx->desc->display_mode; 145 146 return drm_connector_helper_get_modes_fixed(connector, mode); 147 } 148 149 static enum drm_panel_orientation ili9806e_get_orientation(struct drm_panel *panel) 150 { 151 struct ili9806e_panel *ctx = to_ili9806e_panel(panel); 152 153 return ctx->orientation; 154 } 155 156 static const struct drm_panel_funcs ili9806e_funcs = { 157 .prepare = ili9806e_prepare, 158 .unprepare = ili9806e_unprepare, 159 .get_modes = ili9806e_get_modes, 160 .get_orientation = ili9806e_get_orientation, 161 }; 162 163 static int ili9806e_dsi_probe(struct mipi_dsi_device *dsi) 164 { 165 struct device *dev = &dsi->dev; 166 struct ili9806e_panel *ctx; 167 int i, ret; 168 169 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 170 if (!ctx) 171 return -ENOMEM; 172 173 ctx->desc = device_get_match_data(dev); 174 175 for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++) 176 ctx->supplies[i].supply = regulator_names[i]; 177 178 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), 179 ctx->supplies); 180 if (ret < 0) 181 return ret; 182 183 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); 184 if (IS_ERR(ctx->reset_gpio)) 185 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), 186 "Failed to get reset-gpios\n"); 187 188 mipi_dsi_set_drvdata(dsi, ctx); 189 ctx->dsi = dsi; 190 191 dsi->mode_flags = ctx->desc->mode_flags; 192 dsi->format = ctx->desc->format; 193 dsi->lanes = ctx->desc->lanes; 194 195 drm_panel_init(&ctx->panel, dev, &ili9806e_funcs, 196 DRM_MODE_CONNECTOR_DSI); 197 198 ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation); 199 if (ret) 200 return dev_err_probe(dev, ret, "Failed to get orientation\n"); 201 202 ret = drm_panel_of_backlight(&ctx->panel); 203 if (ret) 204 return dev_err_probe(dev, ret, "Failed to get backlight\n"); 205 206 ctx->panel.prepare_prev_first = true; 207 drm_panel_add(&ctx->panel); 208 209 ret = mipi_dsi_attach(dsi); 210 if (ret < 0) { 211 dev_err_probe(dev, ret, "Failed to attach to DSI host\n"); 212 drm_panel_remove(&ctx->panel); 213 return ret; 214 } 215 216 return 0; 217 } 218 219 static void ili9806e_dsi_remove(struct mipi_dsi_device *dsi) 220 { 221 struct ili9806e_panel *ctx = mipi_dsi_get_drvdata(dsi); 222 223 mipi_dsi_detach(dsi); 224 drm_panel_remove(&ctx->panel); 225 } 226 227 static void com35h3p70ulc_init(struct mipi_dsi_multi_context *ctx) 228 { 229 /* Switch to page 1 */ 230 mipi_dsi_dcs_write_seq_multi(ctx, 0xff, 0xff, 0x98, 0x06, 0x04, 0x01); 231 /* Interface Settings */ 232 mipi_dsi_dcs_write_seq_multi(ctx, 0x08, 0x18); 233 mipi_dsi_dcs_write_seq_multi(ctx, 0x21, 0x01); 234 /* Panel Settings */ 235 mipi_dsi_dcs_write_seq_multi(ctx, 0x30, 0x03); 236 mipi_dsi_dcs_write_seq_multi(ctx, 0x31, 0x00); 237 mipi_dsi_dcs_write_seq_multi(ctx, 0x60, 0x0d); 238 mipi_dsi_dcs_write_seq_multi(ctx, 0x61, 0x08); 239 mipi_dsi_dcs_write_seq_multi(ctx, 0x62, 0x08); 240 mipi_dsi_dcs_write_seq_multi(ctx, 0x63, 0x09); 241 /* Power Control */ 242 mipi_dsi_dcs_write_seq_multi(ctx, 0x40, 0x30); 243 mipi_dsi_dcs_write_seq_multi(ctx, 0x41, 0x44); 244 mipi_dsi_dcs_write_seq_multi(ctx, 0x42, 0x00); 245 mipi_dsi_dcs_write_seq_multi(ctx, 0x43, 0x89); 246 mipi_dsi_dcs_write_seq_multi(ctx, 0x44, 0x8e); 247 mipi_dsi_dcs_write_seq_multi(ctx, 0x45, 0xd9); 248 mipi_dsi_dcs_write_seq_multi(ctx, 0x46, 0x33); 249 mipi_dsi_dcs_write_seq_multi(ctx, 0x47, 0x33); 250 mipi_dsi_dcs_write_seq_multi(ctx, 0x50, 0x90); 251 mipi_dsi_dcs_write_seq_multi(ctx, 0x51, 0x90); 252 mipi_dsi_dcs_write_seq_multi(ctx, 0x56, 0x00); 253 /* Gamma Settings */ 254 mipi_dsi_dcs_write_seq_multi(ctx, 0xa0, 0x00); 255 mipi_dsi_dcs_write_seq_multi(ctx, 0xa1, 0x0c); 256 mipi_dsi_dcs_write_seq_multi(ctx, 0xa2, 0x13); 257 mipi_dsi_dcs_write_seq_multi(ctx, 0xa3, 0x0f); 258 mipi_dsi_dcs_write_seq_multi(ctx, 0xa4, 0x0a); 259 mipi_dsi_dcs_write_seq_multi(ctx, 0xa5, 0x0d); 260 mipi_dsi_dcs_write_seq_multi(ctx, 0xa6, 0x0c); 261 mipi_dsi_dcs_write_seq_multi(ctx, 0xa7, 0x0b); 262 mipi_dsi_dcs_write_seq_multi(ctx, 0xa8, 0x01); 263 mipi_dsi_dcs_write_seq_multi(ctx, 0xa9, 0x06); 264 mipi_dsi_dcs_write_seq_multi(ctx, 0xaa, 0x15); 265 mipi_dsi_dcs_write_seq_multi(ctx, 0xab, 0x07); 266 mipi_dsi_dcs_write_seq_multi(ctx, 0xac, 0x12); 267 mipi_dsi_dcs_write_seq_multi(ctx, 0xad, 0x28); 268 mipi_dsi_dcs_write_seq_multi(ctx, 0xae, 0x20); 269 mipi_dsi_dcs_write_seq_multi(ctx, 0xaf, 0x14); 270 mipi_dsi_dcs_write_seq_multi(ctx, 0xc0, 0x00); 271 mipi_dsi_dcs_write_seq_multi(ctx, 0xc1, 0x0c); 272 mipi_dsi_dcs_write_seq_multi(ctx, 0xc2, 0x13); 273 mipi_dsi_dcs_write_seq_multi(ctx, 0xc3, 0x0f); 274 mipi_dsi_dcs_write_seq_multi(ctx, 0xc4, 0x09); 275 mipi_dsi_dcs_write_seq_multi(ctx, 0xc5, 0x0d); 276 mipi_dsi_dcs_write_seq_multi(ctx, 0xc6, 0x0c); 277 mipi_dsi_dcs_write_seq_multi(ctx, 0xc7, 0x0b); 278 mipi_dsi_dcs_write_seq_multi(ctx, 0xc8, 0x01); 279 mipi_dsi_dcs_write_seq_multi(ctx, 0xc9, 0x06); 280 mipi_dsi_dcs_write_seq_multi(ctx, 0xca, 0x14); 281 mipi_dsi_dcs_write_seq_multi(ctx, 0xcb, 0x07); 282 mipi_dsi_dcs_write_seq_multi(ctx, 0xcc, 0x0f); 283 mipi_dsi_dcs_write_seq_multi(ctx, 0xcd, 0x21); 284 mipi_dsi_dcs_write_seq_multi(ctx, 0xce, 0x17); 285 mipi_dsi_dcs_write_seq_multi(ctx, 0xcf, 0x0a); 286 287 /* Switch to page 7 */ 288 mipi_dsi_dcs_write_seq_multi(ctx, 0xff, 0xff, 0x98, 0x06, 0x04, 0x07); 289 /* Power Control */ 290 mipi_dsi_dcs_write_seq_multi(ctx, 0x06, 0x00); 291 mipi_dsi_dcs_write_seq_multi(ctx, 0x18, 0x1d); 292 mipi_dsi_dcs_write_seq_multi(ctx, 0x17, 0x32); 293 294 /* Switch to page 6 */ 295 mipi_dsi_dcs_write_seq_multi(ctx, 0xff, 0xff, 0x98, 0x06, 0x04, 0x06); 296 /* GIP settings */ 297 mipi_dsi_dcs_write_seq_multi(ctx, 0x00, 0x20); 298 mipi_dsi_dcs_write_seq_multi(ctx, 0x01, 0x02); 299 mipi_dsi_dcs_write_seq_multi(ctx, 0x02, 0x00); 300 mipi_dsi_dcs_write_seq_multi(ctx, 0x03, 0x02); 301 mipi_dsi_dcs_write_seq_multi(ctx, 0x04, 0x01); 302 mipi_dsi_dcs_write_seq_multi(ctx, 0x05, 0x01); 303 mipi_dsi_dcs_write_seq_multi(ctx, 0x06, 0x88); 304 mipi_dsi_dcs_write_seq_multi(ctx, 0x07, 0x04); 305 mipi_dsi_dcs_write_seq_multi(ctx, 0x08, 0x03); 306 mipi_dsi_dcs_write_seq_multi(ctx, 0x09, 0x80); 307 mipi_dsi_dcs_write_seq_multi(ctx, 0x0a, 0x00); 308 mipi_dsi_dcs_write_seq_multi(ctx, 0x0b, 0x00); 309 mipi_dsi_dcs_write_seq_multi(ctx, 0x0c, 0x01); 310 mipi_dsi_dcs_write_seq_multi(ctx, 0x0d, 0x01); 311 mipi_dsi_dcs_write_seq_multi(ctx, 0x0e, 0x00); 312 mipi_dsi_dcs_write_seq_multi(ctx, 0x0f, 0x00); 313 mipi_dsi_dcs_write_seq_multi(ctx, 0x10, 0x55); 314 mipi_dsi_dcs_write_seq_multi(ctx, 0x11, 0x50); 315 mipi_dsi_dcs_write_seq_multi(ctx, 0x12, 0x01); 316 mipi_dsi_dcs_write_seq_multi(ctx, 0x13, 0x00); 317 mipi_dsi_dcs_write_seq_multi(ctx, 0x14, 0x00); 318 mipi_dsi_dcs_write_seq_multi(ctx, 0x15, 0x43); 319 mipi_dsi_dcs_write_seq_multi(ctx, 0x16, 0x0b); 320 mipi_dsi_dcs_write_seq_multi(ctx, 0x17, 0x00); 321 mipi_dsi_dcs_write_seq_multi(ctx, 0x18, 0x00); 322 mipi_dsi_dcs_write_seq_multi(ctx, 0x19, 0x10); 323 mipi_dsi_dcs_write_seq_multi(ctx, 0x1a, 0x00); 324 mipi_dsi_dcs_write_seq_multi(ctx, 0x1b, 0x00); 325 mipi_dsi_dcs_write_seq_multi(ctx, 0x1c, 0x00); 326 mipi_dsi_dcs_write_seq_multi(ctx, 0x1d, 0x00); 327 mipi_dsi_dcs_write_seq_multi(ctx, 0x20, 0x01); 328 mipi_dsi_dcs_write_seq_multi(ctx, 0x21, 0x23); 329 mipi_dsi_dcs_write_seq_multi(ctx, 0x22, 0x45); 330 mipi_dsi_dcs_write_seq_multi(ctx, 0x23, 0x67); 331 mipi_dsi_dcs_write_seq_multi(ctx, 0x24, 0x01); 332 mipi_dsi_dcs_write_seq_multi(ctx, 0x25, 0x23); 333 mipi_dsi_dcs_write_seq_multi(ctx, 0x26, 0x45); 334 mipi_dsi_dcs_write_seq_multi(ctx, 0x27, 0x67); 335 mipi_dsi_dcs_write_seq_multi(ctx, 0x30, 0x02); 336 mipi_dsi_dcs_write_seq_multi(ctx, 0x31, 0x22); 337 mipi_dsi_dcs_write_seq_multi(ctx, 0x32, 0x22); 338 mipi_dsi_dcs_write_seq_multi(ctx, 0x33, 0x88); 339 mipi_dsi_dcs_write_seq_multi(ctx, 0x34, 0xaa); 340 mipi_dsi_dcs_write_seq_multi(ctx, 0x35, 0xbb); 341 mipi_dsi_dcs_write_seq_multi(ctx, 0x36, 0x66); 342 mipi_dsi_dcs_write_seq_multi(ctx, 0x37, 0x22); 343 mipi_dsi_dcs_write_seq_multi(ctx, 0x38, 0x22); 344 mipi_dsi_dcs_write_seq_multi(ctx, 0x39, 0x22); 345 mipi_dsi_dcs_write_seq_multi(ctx, 0x3a, 0x22); 346 mipi_dsi_dcs_write_seq_multi(ctx, 0x3b, 0x22); 347 mipi_dsi_dcs_write_seq_multi(ctx, 0x3c, 0x22); 348 mipi_dsi_dcs_write_seq_multi(ctx, 0x3d, 0x22); 349 mipi_dsi_dcs_write_seq_multi(ctx, 0x3e, 0x22); 350 mipi_dsi_dcs_write_seq_multi(ctx, 0x3f, 0x22); 351 mipi_dsi_dcs_write_seq_multi(ctx, 0x40, 0x22); 352 mipi_dsi_dcs_write_seq_multi(ctx, 0x53, 0x12); 353 354 /* Switch to page 0 */ 355 mipi_dsi_dcs_write_seq_multi(ctx, 0xff, 0xff, 0x98, 0x06, 0x04, 0x00); 356 /* Interface Pixel format */ 357 mipi_dsi_dcs_write_seq_multi(ctx, 0x3a, 0x60); 358 }; 359 360 static const struct drm_display_mode com35h3p70ulc_default_mode = { 361 .clock = 22400, 362 .hdisplay = 480, 363 .hsync_start = 480 + 16, 364 .hsync_end = 480 + 16 + 16, 365 .htotal = 480 + 16 + 16 + 16, 366 .vdisplay = 640, 367 .vsync_start = 640 + 52, 368 .vsync_end = 640 + 52 + 4, 369 .vtotal = 640 + 52 + 4 + 16, 370 .width_mm = 53, 371 .height_mm = 71, 372 }; 373 374 static const struct panel_desc com35h3p70ulc_desc = { 375 .init_sequence = com35h3p70ulc_init, 376 .display_mode = &com35h3p70ulc_default_mode, 377 .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | 378 MIPI_DSI_MODE_LPM, 379 .format = MIPI_DSI_FMT_RGB888, 380 .lanes = 2, 381 }; 382 383 static const struct of_device_id ili9806e_of_match[] = { 384 { .compatible = "ortustech,com35h3p70ulc", .data = &com35h3p70ulc_desc }, 385 { } 386 }; 387 MODULE_DEVICE_TABLE(of, ili9806e_of_match); 388 389 static struct mipi_dsi_driver ili9806e_dsi_driver = { 390 .driver = { 391 .name = "ili9806e-dsi", 392 .of_match_table = ili9806e_of_match, 393 }, 394 .probe = ili9806e_dsi_probe, 395 .remove = ili9806e_dsi_remove, 396 }; 397 module_mipi_dsi_driver(ili9806e_dsi_driver); 398 399 MODULE_AUTHOR("Gunnar Dibbern <gunnar.dibbern@lht.dlh.de>"); 400 MODULE_AUTHOR("Michael Walle <mwalle@kernel.org>"); 401 MODULE_DESCRIPTION("Ilitek ILI9806E Controller Driver"); 402 MODULE_LICENSE("GPL"); 403