1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * MIPI-DSI based s6e8aa0 AMOLED LCD 5.3 inch panel driver. 4 * 5 * Copyright (c) 2013 Samsung Electronics Co., Ltd 6 * 7 * Inki Dae, <inki.dae@samsung.com> 8 * Donghwa Lee, <dh09.lee@samsung.com> 9 * Joongmock Shin <jmock.shin@samsung.com> 10 * Eunchul Kim <chulspro.kim@samsung.com> 11 * Tomasz Figa <t.figa@samsung.com> 12 * Andrzej Hajda <a.hajda@samsung.com> 13 */ 14 15 #include <linux/delay.h> 16 #include <linux/gpio/consumer.h> 17 #include <linux/module.h> 18 #include <linux/of.h> 19 #include <linux/regulator/consumer.h> 20 21 #include <video/mipi_display.h> 22 #include <video/of_videomode.h> 23 #include <video/videomode.h> 24 25 #include <drm/drm_mipi_dsi.h> 26 #include <drm/drm_modes.h> 27 #include <drm/drm_panel.h> 28 #include <drm/drm_print.h> 29 30 #define LDI_MTP_LENGTH 24 31 #define GAMMA_LEVEL_NUM 25 32 #define GAMMA_TABLE_LEN 26 33 34 #define PANELCTL_SS_MASK (1 << 5) 35 #define PANELCTL_SS_1_800 (0 << 5) 36 #define PANELCTL_SS_800_1 (1 << 5) 37 #define PANELCTL_GTCON_MASK (7 << 2) 38 #define PANELCTL_GTCON_110 (6 << 2) 39 #define PANELCTL_GTCON_111 (7 << 2) 40 41 #define PANELCTL_CLK1_CON_MASK (7 << 3) 42 #define PANELCTL_CLK1_000 (0 << 3) 43 #define PANELCTL_CLK1_001 (1 << 3) 44 #define PANELCTL_CLK2_CON_MASK (7 << 0) 45 #define PANELCTL_CLK2_000 (0 << 0) 46 #define PANELCTL_CLK2_001 (1 << 0) 47 48 #define PANELCTL_INT1_CON_MASK (7 << 3) 49 #define PANELCTL_INT1_000 (0 << 3) 50 #define PANELCTL_INT1_001 (1 << 3) 51 #define PANELCTL_INT2_CON_MASK (7 << 0) 52 #define PANELCTL_INT2_000 (0 << 0) 53 #define PANELCTL_INT2_001 (1 << 0) 54 55 #define PANELCTL_BICTL_CON_MASK (7 << 3) 56 #define PANELCTL_BICTL_000 (0 << 3) 57 #define PANELCTL_BICTL_001 (1 << 3) 58 #define PANELCTL_BICTLB_CON_MASK (7 << 0) 59 #define PANELCTL_BICTLB_000 (0 << 0) 60 #define PANELCTL_BICTLB_001 (1 << 0) 61 62 #define PANELCTL_EM_CLK1_CON_MASK (7 << 3) 63 #define PANELCTL_EM_CLK1_110 (6 << 3) 64 #define PANELCTL_EM_CLK1_111 (7 << 3) 65 #define PANELCTL_EM_CLK1B_CON_MASK (7 << 0) 66 #define PANELCTL_EM_CLK1B_110 (6 << 0) 67 #define PANELCTL_EM_CLK1B_111 (7 << 0) 68 69 #define PANELCTL_EM_CLK2_CON_MASK (7 << 3) 70 #define PANELCTL_EM_CLK2_110 (6 << 3) 71 #define PANELCTL_EM_CLK2_111 (7 << 3) 72 #define PANELCTL_EM_CLK2B_CON_MASK (7 << 0) 73 #define PANELCTL_EM_CLK2B_110 (6 << 0) 74 #define PANELCTL_EM_CLK2B_111 (7 << 0) 75 76 #define PANELCTL_EM_INT1_CON_MASK (7 << 3) 77 #define PANELCTL_EM_INT1_000 (0 << 3) 78 #define PANELCTL_EM_INT1_001 (1 << 3) 79 #define PANELCTL_EM_INT2_CON_MASK (7 << 0) 80 #define PANELCTL_EM_INT2_000 (0 << 0) 81 #define PANELCTL_EM_INT2_001 (1 << 0) 82 83 #define AID_DISABLE (0x4) 84 #define AID_1 (0x5) 85 #define AID_2 (0x6) 86 #define AID_3 (0x7) 87 88 typedef u8 s6e8aa0_gamma_table[GAMMA_TABLE_LEN]; 89 90 struct s6e8aa0_variant { 91 u8 version; 92 const s6e8aa0_gamma_table *gamma_tables; 93 }; 94 95 struct s6e8aa0 { 96 struct device *dev; 97 struct drm_panel panel; 98 99 struct regulator_bulk_data supplies[2]; 100 struct gpio_desc *reset_gpio; 101 u32 power_on_delay; 102 u32 reset_delay; 103 u32 init_delay; 104 bool flip_horizontal; 105 bool flip_vertical; 106 struct videomode vm; 107 u32 width_mm; 108 u32 height_mm; 109 110 u8 version; 111 u8 id; 112 const struct s6e8aa0_variant *variant; 113 int brightness; 114 115 /* This field is tested by functions directly accessing DSI bus before 116 * transfer, transfer is skipped if it is set. In case of transfer 117 * failure or unexpected response the field is set to error value. 118 * Such construct allows to eliminate many checks in higher level 119 * functions. 120 */ 121 int error; 122 }; 123 124 static inline struct s6e8aa0 *panel_to_s6e8aa0(struct drm_panel *panel) 125 { 126 return container_of(panel, struct s6e8aa0, panel); 127 } 128 129 static int s6e8aa0_clear_error(struct s6e8aa0 *ctx) 130 { 131 int ret = ctx->error; 132 133 ctx->error = 0; 134 return ret; 135 } 136 137 static void s6e8aa0_dcs_write(struct s6e8aa0 *ctx, const void *data, size_t len) 138 { 139 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); 140 ssize_t ret; 141 142 if (ctx->error < 0) 143 return; 144 145 ret = mipi_dsi_dcs_write_buffer(dsi, data, len); 146 if (ret < 0) { 147 dev_err(ctx->dev, "error %zd writing dcs seq: %*ph\n", ret, 148 (int)len, data); 149 ctx->error = ret; 150 } 151 } 152 153 static int s6e8aa0_dcs_read(struct s6e8aa0 *ctx, u8 cmd, void *data, size_t len) 154 { 155 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); 156 int ret; 157 158 if (ctx->error < 0) 159 return ctx->error; 160 161 ret = mipi_dsi_dcs_read(dsi, cmd, data, len); 162 if (ret < 0) { 163 dev_err(ctx->dev, "error %d reading dcs seq(%#x)\n", ret, cmd); 164 ctx->error = ret; 165 } 166 167 return ret; 168 } 169 170 #define s6e8aa0_dcs_write_seq(ctx, seq...) \ 171 ({\ 172 const u8 d[] = { seq };\ 173 BUILD_BUG_ON_MSG(ARRAY_SIZE(d) > 64, "DCS sequence too big for stack");\ 174 s6e8aa0_dcs_write(ctx, d, ARRAY_SIZE(d));\ 175 }) 176 177 #define s6e8aa0_dcs_write_seq_static(ctx, seq...) \ 178 ({\ 179 static const u8 d[] = { seq };\ 180 s6e8aa0_dcs_write(ctx, d, ARRAY_SIZE(d));\ 181 }) 182 183 static void s6e8aa0_apply_level_1_key(struct s6e8aa0 *ctx) 184 { 185 s6e8aa0_dcs_write_seq_static(ctx, 0xf0, 0x5a, 0x5a); 186 } 187 188 static void s6e8aa0_panel_cond_set_v142(struct s6e8aa0 *ctx) 189 { 190 static const u8 aids[] = { 191 0x04, 0x04, 0x04, 0x04, 0x04, 0x60, 0x80, 0xA0 192 }; 193 u8 aid = aids[ctx->id >> 5]; 194 u8 cfg = 0x3d; 195 u8 clk_con = 0xc8; 196 u8 int_con = 0x08; 197 u8 bictl_con = 0x48; 198 u8 em_clk1_con = 0xff; 199 u8 em_clk2_con = 0xff; 200 u8 em_int_con = 0xc8; 201 202 if (ctx->flip_vertical) { 203 /* GTCON */ 204 cfg &= ~(PANELCTL_GTCON_MASK); 205 cfg |= (PANELCTL_GTCON_110); 206 } 207 208 if (ctx->flip_horizontal) { 209 /* SS */ 210 cfg &= ~(PANELCTL_SS_MASK); 211 cfg |= (PANELCTL_SS_1_800); 212 } 213 214 if (ctx->flip_horizontal || ctx->flip_vertical) { 215 /* CLK1,2_CON */ 216 clk_con &= ~(PANELCTL_CLK1_CON_MASK | 217 PANELCTL_CLK2_CON_MASK); 218 clk_con |= (PANELCTL_CLK1_000 | PANELCTL_CLK2_001); 219 220 /* INT1,2_CON */ 221 int_con &= ~(PANELCTL_INT1_CON_MASK | 222 PANELCTL_INT2_CON_MASK); 223 int_con |= (PANELCTL_INT1_000 | PANELCTL_INT2_001); 224 225 /* BICTL,B_CON */ 226 bictl_con &= ~(PANELCTL_BICTL_CON_MASK | 227 PANELCTL_BICTLB_CON_MASK); 228 bictl_con |= (PANELCTL_BICTL_000 | 229 PANELCTL_BICTLB_001); 230 231 /* EM_CLK1,1B_CON */ 232 em_clk1_con &= ~(PANELCTL_EM_CLK1_CON_MASK | 233 PANELCTL_EM_CLK1B_CON_MASK); 234 em_clk1_con |= (PANELCTL_EM_CLK1_110 | 235 PANELCTL_EM_CLK1B_110); 236 237 /* EM_CLK2,2B_CON */ 238 em_clk2_con &= ~(PANELCTL_EM_CLK2_CON_MASK | 239 PANELCTL_EM_CLK2B_CON_MASK); 240 em_clk2_con |= (PANELCTL_EM_CLK2_110 | 241 PANELCTL_EM_CLK2B_110); 242 243 /* EM_INT1,2_CON */ 244 em_int_con &= ~(PANELCTL_EM_INT1_CON_MASK | 245 PANELCTL_EM_INT2_CON_MASK); 246 em_int_con |= (PANELCTL_EM_INT1_000 | 247 PANELCTL_EM_INT2_001); 248 } 249 250 s6e8aa0_dcs_write_seq(ctx, 251 0xf8, cfg, 0x35, 0x00, 0x00, 0x00, 0x93, 0x00, 252 0x3c, 0x78, 0x08, 0x27, 0x7d, 0x3f, 0x00, 0x00, 253 0x00, 0x20, aid, 0x08, 0x6e, 0x00, 0x00, 0x00, 254 0x02, 0x07, 0x07, 0x23, 0x23, 0xc0, clk_con, int_con, 255 bictl_con, 0xc1, 0x00, 0xc1, em_clk1_con, em_clk2_con, 256 em_int_con); 257 } 258 259 static void s6e8aa0_panel_cond_set(struct s6e8aa0 *ctx) 260 { 261 if (ctx->version < 142) 262 s6e8aa0_dcs_write_seq_static(ctx, 263 0xf8, 0x19, 0x35, 0x00, 0x00, 0x00, 0x94, 0x00, 264 0x3c, 0x78, 0x10, 0x27, 0x08, 0x6e, 0x00, 0x00, 265 0x00, 0x00, 0x04, 0x08, 0x6e, 0x00, 0x00, 0x00, 266 0x00, 0x07, 0x07, 0x23, 0x6e, 0xc0, 0xc1, 0x01, 267 0x81, 0xc1, 0x00, 0xc3, 0xf6, 0xf6, 0xc1 268 ); 269 else 270 s6e8aa0_panel_cond_set_v142(ctx); 271 } 272 273 static void s6e8aa0_display_condition_set(struct s6e8aa0 *ctx) 274 { 275 s6e8aa0_dcs_write_seq_static(ctx, 0xf2, 0x80, 0x03, 0x0d); 276 } 277 278 static void s6e8aa0_etc_source_control(struct s6e8aa0 *ctx) 279 { 280 s6e8aa0_dcs_write_seq_static(ctx, 0xf6, 0x00, 0x02, 0x00); 281 } 282 283 static void s6e8aa0_etc_pentile_control(struct s6e8aa0 *ctx) 284 { 285 static const u8 pent32[] = { 286 0xb6, 0x0c, 0x02, 0x03, 0x32, 0xc0, 0x44, 0x44, 0xc0, 0x00 287 }; 288 289 static const u8 pent142[] = { 290 0xb6, 0x0c, 0x02, 0x03, 0x32, 0xff, 0x44, 0x44, 0xc0, 0x00 291 }; 292 293 if (ctx->version < 142) 294 s6e8aa0_dcs_write(ctx, pent32, ARRAY_SIZE(pent32)); 295 else 296 s6e8aa0_dcs_write(ctx, pent142, ARRAY_SIZE(pent142)); 297 } 298 299 static void s6e8aa0_etc_power_control(struct s6e8aa0 *ctx) 300 { 301 static const u8 pwr142[] = { 302 0xf4, 0xcf, 0x0a, 0x12, 0x10, 0x1e, 0x33, 0x02 303 }; 304 305 static const u8 pwr32[] = { 306 0xf4, 0xcf, 0x0a, 0x15, 0x10, 0x19, 0x33, 0x02 307 }; 308 309 if (ctx->version < 142) 310 s6e8aa0_dcs_write(ctx, pwr32, ARRAY_SIZE(pwr32)); 311 else 312 s6e8aa0_dcs_write(ctx, pwr142, ARRAY_SIZE(pwr142)); 313 } 314 315 static void s6e8aa0_etc_elvss_control(struct s6e8aa0 *ctx) 316 { 317 u8 id = ctx->id ? 0 : 0x95; 318 319 s6e8aa0_dcs_write_seq(ctx, 0xb1, 0x04, id); 320 } 321 322 static void s6e8aa0_elvss_nvm_set_v142(struct s6e8aa0 *ctx) 323 { 324 u8 br; 325 326 switch (ctx->brightness) { 327 case 0 ... 6: /* 30cd ~ 100cd */ 328 br = 0xdf; 329 break; 330 case 7 ... 11: /* 120cd ~ 150cd */ 331 br = 0xdd; 332 break; 333 case 12 ... 15: /* 180cd ~ 210cd */ 334 default: 335 br = 0xd9; 336 break; 337 case 16 ... 24: /* 240cd ~ 300cd */ 338 br = 0xd0; 339 break; 340 } 341 342 s6e8aa0_dcs_write_seq(ctx, 0xd9, 0x14, 0x40, 0x0c, 0xcb, 0xce, 0x6e, 343 0xc4, 0x0f, 0x40, 0x41, br, 0x00, 0x60, 0x19); 344 } 345 346 static void s6e8aa0_elvss_nvm_set(struct s6e8aa0 *ctx) 347 { 348 if (ctx->version < 142) 349 s6e8aa0_dcs_write_seq_static(ctx, 350 0xd9, 0x14, 0x40, 0x0c, 0xcb, 0xce, 0x6e, 0xc4, 0x07, 351 0x40, 0x41, 0xc1, 0x00, 0x60, 0x19); 352 else 353 s6e8aa0_elvss_nvm_set_v142(ctx); 354 }; 355 356 static void s6e8aa0_apply_level_2_key(struct s6e8aa0 *ctx) 357 { 358 s6e8aa0_dcs_write_seq_static(ctx, 0xfc, 0x5a, 0x5a); 359 } 360 361 static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v142[GAMMA_LEVEL_NUM] = { 362 { 363 0xfa, 0x01, 0x71, 0x31, 0x7b, 0x62, 0x55, 0x55, 364 0xaf, 0xb1, 0xb1, 0xbd, 0xce, 0xb7, 0x9a, 0xb1, 365 0x90, 0xb2, 0xc4, 0xae, 0x00, 0x60, 0x00, 0x40, 366 0x00, 0x70, 367 }, { 368 0xfa, 0x01, 0x71, 0x31, 0x7b, 0x74, 0x68, 0x69, 369 0xb8, 0xc1, 0xb7, 0xbd, 0xcd, 0xb8, 0x93, 0xab, 370 0x88, 0xb4, 0xc4, 0xb1, 0x00, 0x6b, 0x00, 0x4d, 371 0x00, 0x7d, 372 }, { 373 0xfa, 0x01, 0x71, 0x31, 0x7b, 0x95, 0x8a, 0x89, 374 0xb4, 0xc6, 0xb2, 0xc5, 0xd2, 0xbf, 0x90, 0xa8, 375 0x85, 0xb5, 0xc4, 0xb3, 0x00, 0x7b, 0x00, 0x5d, 376 0x00, 0x8f, 377 }, { 378 0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9f, 0x98, 0x92, 379 0xb3, 0xc4, 0xb0, 0xbc, 0xcc, 0xb4, 0x91, 0xa6, 380 0x87, 0xb5, 0xc5, 0xb4, 0x00, 0x87, 0x00, 0x6a, 381 0x00, 0x9e, 382 }, { 383 0xfa, 0x01, 0x71, 0x31, 0x7b, 0x99, 0x93, 0x8b, 384 0xb2, 0xc2, 0xb0, 0xbd, 0xce, 0xb4, 0x90, 0xa6, 385 0x87, 0xb3, 0xc3, 0xb2, 0x00, 0x8d, 0x00, 0x70, 386 0x00, 0xa4, 387 }, { 388 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xa5, 0x99, 389 0xb2, 0xc2, 0xb0, 0xbb, 0xcd, 0xb1, 0x93, 0xa7, 390 0x8a, 0xb2, 0xc1, 0xb0, 0x00, 0x92, 0x00, 0x75, 391 0x00, 0xaa, 392 }, { 393 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa0, 0xa0, 0x93, 394 0xb6, 0xc4, 0xb4, 0xb5, 0xc8, 0xaa, 0x94, 0xa9, 395 0x8c, 0xb2, 0xc0, 0xb0, 0x00, 0x97, 0x00, 0x7a, 396 0x00, 0xaf, 397 }, { 398 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xa7, 0x96, 399 0xb3, 0xc2, 0xb0, 0xba, 0xcb, 0xb0, 0x94, 0xa8, 400 0x8c, 0xb0, 0xbf, 0xaf, 0x00, 0x9f, 0x00, 0x83, 401 0x00, 0xb9, 402 }, { 403 0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9d, 0xa2, 0x90, 404 0xb6, 0xc5, 0xb3, 0xb8, 0xc9, 0xae, 0x94, 0xa8, 405 0x8d, 0xaf, 0xbd, 0xad, 0x00, 0xa4, 0x00, 0x88, 406 0x00, 0xbf, 407 }, { 408 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa6, 0xac, 0x97, 409 0xb4, 0xc4, 0xb1, 0xbb, 0xcb, 0xb2, 0x93, 0xa7, 410 0x8d, 0xae, 0xbc, 0xad, 0x00, 0xa7, 0x00, 0x8c, 411 0x00, 0xc3, 412 }, { 413 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa2, 0xa9, 0x93, 414 0xb6, 0xc5, 0xb2, 0xba, 0xc9, 0xb0, 0x93, 0xa7, 415 0x8d, 0xae, 0xbb, 0xac, 0x00, 0xab, 0x00, 0x90, 416 0x00, 0xc8, 417 }, { 418 0xfa, 0x01, 0x71, 0x31, 0x7b, 0x9e, 0xa6, 0x8f, 419 0xb7, 0xc6, 0xb3, 0xb8, 0xc8, 0xb0, 0x93, 0xa6, 420 0x8c, 0xae, 0xbb, 0xad, 0x00, 0xae, 0x00, 0x93, 421 0x00, 0xcc, 422 }, { 423 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xab, 0xb4, 0x9c, 424 0xb3, 0xc3, 0xaf, 0xb7, 0xc7, 0xaf, 0x93, 0xa6, 425 0x8c, 0xaf, 0xbc, 0xad, 0x00, 0xb1, 0x00, 0x97, 426 0x00, 0xcf, 427 }, { 428 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa6, 0xb1, 0x98, 429 0xb1, 0xc2, 0xab, 0xba, 0xc9, 0xb2, 0x93, 0xa6, 430 0x8d, 0xae, 0xba, 0xab, 0x00, 0xb5, 0x00, 0x9b, 431 0x00, 0xd4, 432 }, { 433 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xae, 0x94, 434 0xb2, 0xc3, 0xac, 0xbb, 0xca, 0xb4, 0x91, 0xa4, 435 0x8a, 0xae, 0xba, 0xac, 0x00, 0xb8, 0x00, 0x9e, 436 0x00, 0xd8, 437 }, { 438 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xab, 0xb7, 0x9c, 439 0xae, 0xc0, 0xa9, 0xba, 0xc9, 0xb3, 0x92, 0xa5, 440 0x8b, 0xad, 0xb9, 0xab, 0x00, 0xbb, 0x00, 0xa1, 441 0x00, 0xdc, 442 }, { 443 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb4, 0x97, 444 0xb0, 0xc1, 0xaa, 0xb9, 0xc8, 0xb2, 0x92, 0xa5, 445 0x8c, 0xae, 0xb9, 0xab, 0x00, 0xbe, 0x00, 0xa4, 446 0x00, 0xdf, 447 }, { 448 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xb0, 0x94, 449 0xb0, 0xc2, 0xab, 0xbb, 0xc9, 0xb3, 0x91, 0xa4, 450 0x8b, 0xad, 0xb8, 0xaa, 0x00, 0xc1, 0x00, 0xa8, 451 0x00, 0xe2, 452 }, { 453 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa3, 0xb0, 0x94, 454 0xae, 0xbf, 0xa8, 0xb9, 0xc8, 0xb3, 0x92, 0xa4, 455 0x8b, 0xad, 0xb7, 0xa9, 0x00, 0xc4, 0x00, 0xab, 456 0x00, 0xe6, 457 }, { 458 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb6, 0x98, 459 0xaf, 0xc0, 0xa8, 0xb8, 0xc7, 0xb2, 0x93, 0xa5, 460 0x8d, 0xad, 0xb7, 0xa9, 0x00, 0xc7, 0x00, 0xae, 461 0x00, 0xe9, 462 }, { 463 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb3, 0x95, 464 0xaf, 0xc1, 0xa9, 0xb9, 0xc8, 0xb3, 0x92, 0xa4, 465 0x8b, 0xad, 0xb7, 0xaa, 0x00, 0xc9, 0x00, 0xb0, 466 0x00, 0xec, 467 }, { 468 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb3, 0x95, 469 0xac, 0xbe, 0xa6, 0xbb, 0xc9, 0xb4, 0x90, 0xa3, 470 0x8a, 0xad, 0xb7, 0xa9, 0x00, 0xcc, 0x00, 0xb4, 471 0x00, 0xf0, 472 }, { 473 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa0, 0xb0, 0x91, 474 0xae, 0xc0, 0xa6, 0xba, 0xc8, 0xb4, 0x91, 0xa4, 475 0x8b, 0xad, 0xb7, 0xa9, 0x00, 0xcf, 0x00, 0xb7, 476 0x00, 0xf3, 477 }, { 478 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa7, 0xb8, 0x98, 479 0xab, 0xbd, 0xa4, 0xbb, 0xc9, 0xb5, 0x91, 0xa3, 480 0x8b, 0xac, 0xb6, 0xa8, 0x00, 0xd1, 0x00, 0xb9, 481 0x00, 0xf6, 482 }, { 483 0xfa, 0x01, 0x71, 0x31, 0x7b, 0xa4, 0xb5, 0x95, 484 0xa9, 0xbc, 0xa1, 0xbb, 0xc9, 0xb5, 0x91, 0xa3, 485 0x8a, 0xad, 0xb6, 0xa8, 0x00, 0xd6, 0x00, 0xbf, 486 0x00, 0xfc, 487 }, 488 }; 489 490 static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v96[GAMMA_LEVEL_NUM] = { 491 { 492 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff, 493 0xdf, 0x1f, 0xd7, 0xdc, 0xb7, 0xe1, 0xc0, 0xaf, 494 0xc4, 0xd2, 0xd0, 0xcf, 0x00, 0x4d, 0x00, 0x40, 495 0x00, 0x5f, 496 }, { 497 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff, 498 0xd5, 0x35, 0xcf, 0xdc, 0xc1, 0xe1, 0xbf, 0xb3, 499 0xc1, 0xd2, 0xd1, 0xce, 0x00, 0x53, 0x00, 0x46, 500 0x00, 0x67, 501 }, { 502 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff, 503 0xd2, 0x64, 0xcf, 0xdb, 0xc6, 0xe1, 0xbd, 0xb3, 504 0xbd, 0xd2, 0xd2, 0xce, 0x00, 0x59, 0x00, 0x4b, 505 0x00, 0x6e, 506 }, { 507 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff, 508 0xd0, 0x7c, 0xcf, 0xdb, 0xc9, 0xe0, 0xbc, 0xb4, 509 0xbb, 0xcf, 0xd1, 0xcc, 0x00, 0x5f, 0x00, 0x50, 510 0x00, 0x75, 511 }, { 512 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff, 513 0xd0, 0x8e, 0xd1, 0xdb, 0xcc, 0xdf, 0xbb, 0xb6, 514 0xb9, 0xd0, 0xd1, 0xcd, 0x00, 0x63, 0x00, 0x54, 515 0x00, 0x7a, 516 }, { 517 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff, 518 0xd1, 0x9e, 0xd5, 0xda, 0xcd, 0xdd, 0xbb, 0xb7, 519 0xb9, 0xce, 0xce, 0xc9, 0x00, 0x68, 0x00, 0x59, 520 0x00, 0x81, 521 }, { 522 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x00, 0xff, 523 0xd0, 0xa5, 0xd6, 0xda, 0xcf, 0xdd, 0xbb, 0xb7, 524 0xb8, 0xcc, 0xcd, 0xc7, 0x00, 0x6c, 0x00, 0x5c, 525 0x00, 0x86, 526 }, { 527 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xfe, 528 0xd0, 0xae, 0xd7, 0xd9, 0xd0, 0xdb, 0xb9, 0xb6, 529 0xb5, 0xca, 0xcc, 0xc5, 0x00, 0x74, 0x00, 0x63, 530 0x00, 0x90, 531 }, { 532 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xf9, 533 0xcf, 0xb0, 0xd6, 0xd9, 0xd1, 0xdb, 0xb9, 0xb6, 534 0xb4, 0xca, 0xcb, 0xc5, 0x00, 0x77, 0x00, 0x66, 535 0x00, 0x94, 536 }, { 537 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xff, 0x1f, 0xf7, 538 0xcf, 0xb3, 0xd7, 0xd8, 0xd1, 0xd9, 0xb7, 0xb6, 539 0xb3, 0xc9, 0xca, 0xc3, 0x00, 0x7b, 0x00, 0x69, 540 0x00, 0x99, 541 542 }, { 543 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xfd, 0x2f, 0xf7, 544 0xdf, 0xb5, 0xd6, 0xd8, 0xd1, 0xd8, 0xb6, 0xb5, 545 0xb2, 0xca, 0xcb, 0xc4, 0x00, 0x7e, 0x00, 0x6c, 546 0x00, 0x9d, 547 }, { 548 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xfa, 0x2f, 0xf5, 549 0xce, 0xb6, 0xd5, 0xd7, 0xd2, 0xd8, 0xb6, 0xb4, 550 0xb0, 0xc7, 0xc9, 0xc1, 0x00, 0x84, 0x00, 0x71, 551 0x00, 0xa5, 552 }, { 553 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf7, 0x2f, 0xf2, 554 0xce, 0xb9, 0xd5, 0xd8, 0xd2, 0xd8, 0xb4, 0xb4, 555 0xaf, 0xc7, 0xc9, 0xc1, 0x00, 0x87, 0x00, 0x73, 556 0x00, 0xa8, 557 }, { 558 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf5, 0x2f, 0xf0, 559 0xdf, 0xba, 0xd5, 0xd7, 0xd2, 0xd7, 0xb4, 0xb4, 560 0xaf, 0xc5, 0xc7, 0xbf, 0x00, 0x8a, 0x00, 0x76, 561 0x00, 0xac, 562 }, { 563 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xf2, 0x2f, 0xed, 564 0xcE, 0xbb, 0xd4, 0xd6, 0xd2, 0xd6, 0xb5, 0xb4, 565 0xaF, 0xc5, 0xc7, 0xbf, 0x00, 0x8c, 0x00, 0x78, 566 0x00, 0xaf, 567 }, { 568 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xef, 0x2f, 0xeb, 569 0xcd, 0xbb, 0xd2, 0xd7, 0xd3, 0xd6, 0xb3, 0xb4, 570 0xae, 0xc5, 0xc6, 0xbe, 0x00, 0x91, 0x00, 0x7d, 571 0x00, 0xb6, 572 }, { 573 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xee, 0x2f, 0xea, 574 0xce, 0xbd, 0xd4, 0xd6, 0xd2, 0xd5, 0xb2, 0xb3, 575 0xad, 0xc3, 0xc4, 0xbb, 0x00, 0x94, 0x00, 0x7f, 576 0x00, 0xba, 577 }, { 578 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xec, 0x2f, 0xe8, 579 0xce, 0xbe, 0xd3, 0xd6, 0xd3, 0xd5, 0xb2, 0xb2, 580 0xac, 0xc3, 0xc5, 0xbc, 0x00, 0x96, 0x00, 0x81, 581 0x00, 0xbd, 582 }, { 583 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xeb, 0x2f, 0xe7, 584 0xce, 0xbf, 0xd3, 0xd6, 0xd2, 0xd5, 0xb1, 0xb2, 585 0xab, 0xc2, 0xc4, 0xbb, 0x00, 0x99, 0x00, 0x83, 586 0x00, 0xc0, 587 }, { 588 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xef, 0x5f, 0xe9, 589 0xca, 0xbf, 0xd3, 0xd5, 0xd2, 0xd4, 0xb2, 0xb2, 590 0xab, 0xc1, 0xc4, 0xba, 0x00, 0x9b, 0x00, 0x85, 591 0x00, 0xc3, 592 }, { 593 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xea, 0x5f, 0xe8, 594 0xee, 0xbf, 0xd2, 0xd5, 0xd2, 0xd4, 0xb1, 0xb2, 595 0xab, 0xc1, 0xc2, 0xb9, 0x00, 0x9D, 0x00, 0x87, 596 0x00, 0xc6, 597 }, { 598 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe9, 0x5f, 0xe7, 599 0xcd, 0xbf, 0xd2, 0xd6, 0xd2, 0xd4, 0xb1, 0xb2, 600 0xab, 0xbe, 0xc0, 0xb7, 0x00, 0xa1, 0x00, 0x8a, 601 0x00, 0xca, 602 }, { 603 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe8, 0x61, 0xe6, 604 0xcd, 0xbf, 0xd1, 0xd6, 0xd3, 0xd4, 0xaf, 0xb0, 605 0xa9, 0xbe, 0xc1, 0xb7, 0x00, 0xa3, 0x00, 0x8b, 606 0x00, 0xce, 607 }, { 608 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe8, 0x62, 0xe5, 609 0xcc, 0xc0, 0xd0, 0xd6, 0xd2, 0xd4, 0xaf, 0xb1, 610 0xa9, 0xbd, 0xc0, 0xb6, 0x00, 0xa5, 0x00, 0x8d, 611 0x00, 0xd0, 612 }, { 613 0xfa, 0x01, 0x1f, 0x1f, 0x1f, 0xe7, 0x7f, 0xe3, 614 0xcc, 0xc1, 0xd0, 0xd5, 0xd3, 0xd3, 0xae, 0xaf, 615 0xa8, 0xbe, 0xc0, 0xb7, 0x00, 0xa8, 0x00, 0x90, 616 0x00, 0xd3, 617 } 618 }; 619 620 static const s6e8aa0_gamma_table s6e8aa0_gamma_tables_v32[GAMMA_LEVEL_NUM] = { 621 { 622 0xfa, 0x01, 0x43, 0x14, 0x45, 0x72, 0x5e, 0x6b, 623 0xa1, 0xa7, 0x9a, 0xb4, 0xcb, 0xb8, 0x92, 0xac, 624 0x97, 0xb4, 0xc3, 0xb5, 0x00, 0x4e, 0x00, 0x37, 625 0x00, 0x58, 626 }, { 627 0xfa, 0x01, 0x43, 0x14, 0x45, 0x85, 0x71, 0x7d, 628 0xa6, 0xb6, 0xa1, 0xb5, 0xca, 0xba, 0x93, 0xac, 629 0x98, 0xb2, 0xc0, 0xaf, 0x00, 0x59, 0x00, 0x43, 630 0x00, 0x64, 631 }, { 632 0xfa, 0x01, 0x43, 0x14, 0x45, 0xa4, 0x94, 0x9e, 633 0xa0, 0xbb, 0x9c, 0xc3, 0xd2, 0xc6, 0x93, 0xaa, 634 0x95, 0xb7, 0xc2, 0xb4, 0x00, 0x65, 0x00, 0x50, 635 0x00, 0x74, 636 }, { 637 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xa1, 0xa6, 638 0xa0, 0xb9, 0x9b, 0xc3, 0xd1, 0xc8, 0x90, 0xa6, 639 0x90, 0xbb, 0xc3, 0xb7, 0x00, 0x6f, 0x00, 0x5b, 640 0x00, 0x80, 641 }, { 642 0xfa, 0x01, 0x43, 0x14, 0x45, 0xa6, 0x9d, 0x9f, 643 0x9f, 0xb8, 0x9a, 0xc7, 0xd5, 0xcc, 0x90, 0xa5, 644 0x8f, 0xb8, 0xc1, 0xb6, 0x00, 0x74, 0x00, 0x60, 645 0x00, 0x85, 646 }, { 647 0xfa, 0x01, 0x43, 0x14, 0x45, 0xb3, 0xae, 0xae, 648 0x9e, 0xb7, 0x9a, 0xc8, 0xd6, 0xce, 0x91, 0xa6, 649 0x90, 0xb6, 0xc0, 0xb3, 0x00, 0x78, 0x00, 0x65, 650 0x00, 0x8a, 651 }, { 652 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xa9, 0xa8, 653 0xa3, 0xb9, 0x9e, 0xc4, 0xd3, 0xcb, 0x94, 0xa6, 654 0x90, 0xb6, 0xbf, 0xb3, 0x00, 0x7c, 0x00, 0x69, 655 0x00, 0x8e, 656 }, { 657 0xfa, 0x01, 0x43, 0x14, 0x45, 0xaf, 0xaf, 0xa9, 658 0xa5, 0xbc, 0xa2, 0xc7, 0xd5, 0xcd, 0x93, 0xa5, 659 0x8f, 0xb4, 0xbd, 0xb1, 0x00, 0x83, 0x00, 0x70, 660 0x00, 0x96, 661 }, { 662 0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xab, 0xa3, 663 0xaa, 0xbf, 0xa7, 0xc5, 0xd3, 0xcb, 0x93, 0xa5, 664 0x8f, 0xb2, 0xbb, 0xb0, 0x00, 0x86, 0x00, 0x74, 665 0x00, 0x9b, 666 }, { 667 0xfa, 0x01, 0x43, 0x14, 0x45, 0xb1, 0xb5, 0xab, 668 0xab, 0xc0, 0xa9, 0xc7, 0xd4, 0xcc, 0x94, 0xa4, 669 0x8f, 0xb1, 0xbb, 0xaf, 0x00, 0x8a, 0x00, 0x77, 670 0x00, 0x9e, 671 }, { 672 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb2, 0xa7, 673 0xae, 0xc2, 0xab, 0xc5, 0xd3, 0xca, 0x93, 0xa4, 674 0x8f, 0xb1, 0xba, 0xae, 0x00, 0x8d, 0x00, 0x7b, 675 0x00, 0xa2, 676 }, { 677 0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xaf, 0xa3, 678 0xb0, 0xc3, 0xae, 0xc4, 0xd1, 0xc8, 0x93, 0xa4, 679 0x8f, 0xb1, 0xba, 0xaf, 0x00, 0x8f, 0x00, 0x7d, 680 0x00, 0xa5, 681 }, { 682 0xfa, 0x01, 0x43, 0x14, 0x45, 0xb4, 0xbd, 0xaf, 683 0xae, 0xc1, 0xab, 0xc2, 0xd0, 0xc6, 0x94, 0xa4, 684 0x8f, 0xb1, 0xba, 0xaf, 0x00, 0x92, 0x00, 0x80, 685 0x00, 0xa8, 686 }, { 687 0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xb9, 0xac, 688 0xad, 0xc1, 0xab, 0xc4, 0xd1, 0xc7, 0x95, 0xa4, 689 0x90, 0xb0, 0xb9, 0xad, 0x00, 0x95, 0x00, 0x84, 690 0x00, 0xac, 691 }, { 692 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb6, 0xa7, 693 0xaf, 0xc2, 0xae, 0xc5, 0xd1, 0xc7, 0x93, 0xa3, 694 0x8e, 0xb0, 0xb9, 0xad, 0x00, 0x98, 0x00, 0x86, 695 0x00, 0xaf, 696 }, { 697 0xfa, 0x01, 0x43, 0x14, 0x45, 0xb4, 0xbf, 0xaf, 698 0xad, 0xc1, 0xab, 0xc3, 0xd0, 0xc6, 0x94, 0xa3, 699 0x8f, 0xaf, 0xb8, 0xac, 0x00, 0x9a, 0x00, 0x89, 700 0x00, 0xb2, 701 }, { 702 0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xbc, 0xac, 703 0xaf, 0xc2, 0xad, 0xc2, 0xcf, 0xc4, 0x94, 0xa3, 704 0x90, 0xaf, 0xb8, 0xad, 0x00, 0x9c, 0x00, 0x8b, 705 0x00, 0xb5, 706 }, { 707 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb9, 0xa7, 708 0xb1, 0xc4, 0xaf, 0xc3, 0xcf, 0xc5, 0x94, 0xa3, 709 0x8f, 0xae, 0xb7, 0xac, 0x00, 0x9f, 0x00, 0x8e, 710 0x00, 0xb8, 711 }, { 712 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xb9, 0xa7, 713 0xaf, 0xc2, 0xad, 0xc1, 0xce, 0xc3, 0x95, 0xa3, 714 0x90, 0xad, 0xb6, 0xab, 0x00, 0xa2, 0x00, 0x91, 715 0x00, 0xbb, 716 }, { 717 0xfa, 0x01, 0x43, 0x14, 0x45, 0xb1, 0xbe, 0xac, 718 0xb1, 0xc4, 0xaf, 0xc1, 0xcd, 0xc1, 0x95, 0xa4, 719 0x91, 0xad, 0xb6, 0xab, 0x00, 0xa4, 0x00, 0x93, 720 0x00, 0xbd, 721 }, { 722 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbb, 0xa8, 723 0xb3, 0xc5, 0xb2, 0xc1, 0xcd, 0xc2, 0x95, 0xa3, 724 0x90, 0xad, 0xb6, 0xab, 0x00, 0xa6, 0x00, 0x95, 725 0x00, 0xc0, 726 }, { 727 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbb, 0xa8, 728 0xb0, 0xc3, 0xaf, 0xc2, 0xce, 0xc2, 0x94, 0xa2, 729 0x90, 0xac, 0xb6, 0xab, 0x00, 0xa8, 0x00, 0x98, 730 0x00, 0xc3, 731 }, { 732 0xfa, 0x01, 0x43, 0x14, 0x45, 0xa9, 0xb8, 0xa5, 733 0xb3, 0xc5, 0xb2, 0xc1, 0xcc, 0xc0, 0x95, 0xa2, 734 0x90, 0xad, 0xb6, 0xab, 0x00, 0xaa, 0x00, 0x9a, 735 0x00, 0xc5, 736 }, { 737 0xfa, 0x01, 0x43, 0x14, 0x45, 0xb0, 0xc0, 0xac, 738 0xb0, 0xc3, 0xaf, 0xc1, 0xcd, 0xc1, 0x95, 0xa2, 739 0x90, 0xac, 0xb5, 0xa9, 0x00, 0xac, 0x00, 0x9c, 740 0x00, 0xc8, 741 }, { 742 0xfa, 0x01, 0x43, 0x14, 0x45, 0xad, 0xbd, 0xa8, 743 0xaf, 0xc2, 0xaf, 0xc1, 0xcc, 0xc0, 0x95, 0xa2, 744 0x90, 0xac, 0xb5, 0xaa, 0x00, 0xb1, 0x00, 0xa1, 745 0x00, 0xcc, 746 }, 747 }; 748 749 static const struct s6e8aa0_variant s6e8aa0_variants[] = { 750 { 751 .version = 32, 752 .gamma_tables = s6e8aa0_gamma_tables_v32, 753 }, { 754 .version = 96, 755 .gamma_tables = s6e8aa0_gamma_tables_v96, 756 }, { 757 .version = 142, 758 .gamma_tables = s6e8aa0_gamma_tables_v142, 759 }, { 760 .version = 210, 761 .gamma_tables = s6e8aa0_gamma_tables_v142, 762 } 763 }; 764 765 static void s6e8aa0_brightness_set(struct s6e8aa0 *ctx) 766 { 767 const u8 *gamma; 768 769 if (ctx->error) 770 return; 771 772 gamma = ctx->variant->gamma_tables[ctx->brightness]; 773 774 if (ctx->version >= 142) 775 s6e8aa0_elvss_nvm_set(ctx); 776 777 s6e8aa0_dcs_write(ctx, gamma, GAMMA_TABLE_LEN); 778 779 /* update gamma table. */ 780 s6e8aa0_dcs_write_seq_static(ctx, 0xf7, 0x03); 781 } 782 783 static void s6e8aa0_panel_init(struct s6e8aa0 *ctx) 784 { 785 s6e8aa0_apply_level_1_key(ctx); 786 s6e8aa0_apply_level_2_key(ctx); 787 msleep(20); 788 789 s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE); 790 msleep(40); 791 792 s6e8aa0_panel_cond_set(ctx); 793 s6e8aa0_display_condition_set(ctx); 794 s6e8aa0_brightness_set(ctx); 795 s6e8aa0_etc_source_control(ctx); 796 s6e8aa0_etc_pentile_control(ctx); 797 s6e8aa0_elvss_nvm_set(ctx); 798 s6e8aa0_etc_power_control(ctx); 799 s6e8aa0_etc_elvss_control(ctx); 800 msleep(ctx->init_delay); 801 } 802 803 static void s6e8aa0_set_maximum_return_packet_size(struct s6e8aa0 *ctx, 804 u16 size) 805 { 806 struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); 807 int ret; 808 809 if (ctx->error < 0) 810 return; 811 812 ret = mipi_dsi_set_maximum_return_packet_size(dsi, size); 813 if (ret < 0) { 814 dev_err(ctx->dev, 815 "error %d setting maximum return packet size to %d\n", 816 ret, size); 817 ctx->error = ret; 818 } 819 } 820 821 static void s6e8aa0_read_mtp_id(struct s6e8aa0 *ctx) 822 { 823 u8 id[3]; 824 int ret, i; 825 826 ret = s6e8aa0_dcs_read(ctx, 0xd1, id, ARRAY_SIZE(id)); 827 if (ret < 0 || ret < ARRAY_SIZE(id) || id[0] == 0x00) { 828 dev_err(ctx->dev, "read id failed\n"); 829 ctx->error = -EIO; 830 return; 831 } 832 833 dev_info(ctx->dev, "ID: 0x%2x, 0x%2x, 0x%2x\n", id[0], id[1], id[2]); 834 835 for (i = 0; i < ARRAY_SIZE(s6e8aa0_variants); ++i) { 836 if (id[1] == s6e8aa0_variants[i].version) 837 break; 838 } 839 if (i >= ARRAY_SIZE(s6e8aa0_variants)) { 840 dev_err(ctx->dev, "unsupported display version %d\n", id[1]); 841 ctx->error = -EINVAL; 842 return; 843 } 844 845 ctx->variant = &s6e8aa0_variants[i]; 846 ctx->version = id[1]; 847 ctx->id = id[2]; 848 } 849 850 static void s6e8aa0_set_sequence(struct s6e8aa0 *ctx) 851 { 852 s6e8aa0_set_maximum_return_packet_size(ctx, 3); 853 s6e8aa0_read_mtp_id(ctx); 854 s6e8aa0_panel_init(ctx); 855 s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON); 856 } 857 858 static int s6e8aa0_power_on(struct s6e8aa0 *ctx) 859 { 860 int ret; 861 862 ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 863 if (ret < 0) 864 return ret; 865 866 msleep(ctx->power_on_delay); 867 868 gpiod_set_value(ctx->reset_gpio, 0); 869 usleep_range(10000, 11000); 870 gpiod_set_value(ctx->reset_gpio, 1); 871 872 msleep(ctx->reset_delay); 873 874 return 0; 875 } 876 877 static int s6e8aa0_power_off(struct s6e8aa0 *ctx) 878 { 879 return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); 880 } 881 882 static int s6e8aa0_disable(struct drm_panel *panel) 883 { 884 return 0; 885 } 886 887 static int s6e8aa0_unprepare(struct drm_panel *panel) 888 { 889 struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel); 890 891 s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE); 892 s6e8aa0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_OFF); 893 msleep(40); 894 895 s6e8aa0_clear_error(ctx); 896 897 return s6e8aa0_power_off(ctx); 898 } 899 900 static int s6e8aa0_prepare(struct drm_panel *panel) 901 { 902 struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel); 903 int ret; 904 905 ret = s6e8aa0_power_on(ctx); 906 if (ret < 0) 907 return ret; 908 909 s6e8aa0_set_sequence(ctx); 910 ret = ctx->error; 911 912 if (ret < 0) 913 s6e8aa0_unprepare(panel); 914 915 return ret; 916 } 917 918 static int s6e8aa0_enable(struct drm_panel *panel) 919 { 920 return 0; 921 } 922 923 static int s6e8aa0_get_modes(struct drm_panel *panel) 924 { 925 struct drm_connector *connector = panel->connector; 926 struct s6e8aa0 *ctx = panel_to_s6e8aa0(panel); 927 struct drm_display_mode *mode; 928 929 mode = drm_mode_create(connector->dev); 930 if (!mode) { 931 DRM_ERROR("failed to create a new display mode\n"); 932 return 0; 933 } 934 935 drm_display_mode_from_videomode(&ctx->vm, mode); 936 mode->width_mm = ctx->width_mm; 937 mode->height_mm = ctx->height_mm; 938 connector->display_info.width_mm = mode->width_mm; 939 connector->display_info.height_mm = mode->height_mm; 940 941 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 942 drm_mode_probed_add(connector, mode); 943 944 return 1; 945 } 946 947 static const struct drm_panel_funcs s6e8aa0_drm_funcs = { 948 .disable = s6e8aa0_disable, 949 .unprepare = s6e8aa0_unprepare, 950 .prepare = s6e8aa0_prepare, 951 .enable = s6e8aa0_enable, 952 .get_modes = s6e8aa0_get_modes, 953 }; 954 955 static int s6e8aa0_parse_dt(struct s6e8aa0 *ctx) 956 { 957 struct device *dev = ctx->dev; 958 struct device_node *np = dev->of_node; 959 int ret; 960 961 ret = of_get_videomode(np, &ctx->vm, 0); 962 if (ret < 0) 963 return ret; 964 965 of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay); 966 of_property_read_u32(np, "reset-delay", &ctx->reset_delay); 967 of_property_read_u32(np, "init-delay", &ctx->init_delay); 968 of_property_read_u32(np, "panel-width-mm", &ctx->width_mm); 969 of_property_read_u32(np, "panel-height-mm", &ctx->height_mm); 970 971 ctx->flip_horizontal = of_property_read_bool(np, "flip-horizontal"); 972 ctx->flip_vertical = of_property_read_bool(np, "flip-vertical"); 973 974 return 0; 975 } 976 977 static int s6e8aa0_probe(struct mipi_dsi_device *dsi) 978 { 979 struct device *dev = &dsi->dev; 980 struct s6e8aa0 *ctx; 981 int ret; 982 983 ctx = devm_kzalloc(dev, sizeof(struct s6e8aa0), GFP_KERNEL); 984 if (!ctx) 985 return -ENOMEM; 986 987 mipi_dsi_set_drvdata(dsi, ctx); 988 989 ctx->dev = dev; 990 991 dsi->lanes = 4; 992 dsi->format = MIPI_DSI_FMT_RGB888; 993 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST 994 | MIPI_DSI_MODE_VIDEO_HFP | MIPI_DSI_MODE_VIDEO_HBP 995 | MIPI_DSI_MODE_VIDEO_HSA | MIPI_DSI_MODE_EOT_PACKET 996 | MIPI_DSI_MODE_VSYNC_FLUSH | MIPI_DSI_MODE_VIDEO_AUTO_VERT; 997 998 ret = s6e8aa0_parse_dt(ctx); 999 if (ret < 0) 1000 return ret; 1001 1002 ctx->supplies[0].supply = "vdd3"; 1003 ctx->supplies[1].supply = "vci"; 1004 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), 1005 ctx->supplies); 1006 if (ret < 0) { 1007 dev_err(dev, "failed to get regulators: %d\n", ret); 1008 return ret; 1009 } 1010 1011 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); 1012 if (IS_ERR(ctx->reset_gpio)) { 1013 dev_err(dev, "cannot get reset-gpios %ld\n", 1014 PTR_ERR(ctx->reset_gpio)); 1015 return PTR_ERR(ctx->reset_gpio); 1016 } 1017 1018 ctx->brightness = GAMMA_LEVEL_NUM - 1; 1019 1020 drm_panel_init(&ctx->panel); 1021 ctx->panel.dev = dev; 1022 ctx->panel.funcs = &s6e8aa0_drm_funcs; 1023 1024 ret = drm_panel_add(&ctx->panel); 1025 if (ret < 0) 1026 return ret; 1027 1028 ret = mipi_dsi_attach(dsi); 1029 if (ret < 0) 1030 drm_panel_remove(&ctx->panel); 1031 1032 return ret; 1033 } 1034 1035 static int s6e8aa0_remove(struct mipi_dsi_device *dsi) 1036 { 1037 struct s6e8aa0 *ctx = mipi_dsi_get_drvdata(dsi); 1038 1039 mipi_dsi_detach(dsi); 1040 drm_panel_remove(&ctx->panel); 1041 1042 return 0; 1043 } 1044 1045 static const struct of_device_id s6e8aa0_of_match[] = { 1046 { .compatible = "samsung,s6e8aa0" }, 1047 { } 1048 }; 1049 MODULE_DEVICE_TABLE(of, s6e8aa0_of_match); 1050 1051 static struct mipi_dsi_driver s6e8aa0_driver = { 1052 .probe = s6e8aa0_probe, 1053 .remove = s6e8aa0_remove, 1054 .driver = { 1055 .name = "panel-samsung-s6e8aa0", 1056 .of_match_table = s6e8aa0_of_match, 1057 }, 1058 }; 1059 module_mipi_dsi_driver(s6e8aa0_driver); 1060 1061 MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>"); 1062 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 1063 MODULE_AUTHOR("Joongmock Shin <jmock.shin@samsung.com>"); 1064 MODULE_AUTHOR("Eunchul Kim <chulspro.kim@samsung.com>"); 1065 MODULE_AUTHOR("Tomasz Figa <t.figa@samsung.com>"); 1066 MODULE_AUTHOR("Andrzej Hajda <a.hajda@samsung.com>"); 1067 MODULE_DESCRIPTION("MIPI-DSI based s6e8aa0 AMOLED LCD Panel Driver"); 1068 MODULE_LICENSE("GPL v2"); 1069