Googler | 695f9d9 | 2023-09-11 15:38:29 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ |
| 2 | /* |
| 3 | * common/hdmi_edid_parsing.c |
| 4 | * |
| 5 | * Copyright (C) 2020 Amlogic, Inc. All rights reserved. |
| 6 | * |
| 7 | */ |
| 8 | |
| 9 | #include <common.h> |
| 10 | #include <linux/stddef.h> |
| 11 | #include <amlogic/hdmi.h> |
| 12 | |
| 13 | #define CEA_DATA_BLOCK_COLLECTION_ADDR_1StP 0x04 |
| 14 | #define VIDEO_TAG 0x40 |
| 15 | #define AUDIO_TAG 0x20 |
| 16 | #define VENDOR_TAG 0x60 |
| 17 | #define SPEAKER_TAG 0x80 |
| 18 | |
| 19 | #define HDMI_EDID_BLOCK_TYPE_RESERVED 0 |
| 20 | #define HDMI_EDID_BLOCK_TYPE_AUDIO 1 |
| 21 | #define HDMI_EDID_BLOCK_TYPE_VIDEO 2 |
| 22 | #define HDMI_EDID_BLOCK_TYPE_VENDER 3 |
| 23 | #define HDMI_EDID_BLOCK_TYPE_SPEAKER 4 |
| 24 | #define HDMI_EDID_BLOCK_TYPE_VESA 5 |
| 25 | #define HDMI_EDID_BLOCK_TYPE_RESERVED2 6 |
| 26 | #define HDMI_EDID_BLOCK_TYPE_EXTENDED_TAG 7 |
| 27 | |
| 28 | #define EXTENSION_VENDOR_SPECIFIC 0x1 |
| 29 | #define EXTENSION_COLORMETRY_TAG 0x5 |
| 30 | /* DRM stands for "Dynamic Range and Mastering " */ |
| 31 | #define EXTENSION_DRM_STATIC_TAG 0x6 |
| 32 | /* Video Format Preference Data block */ |
| 33 | #define EXTENSION_VFPDB_TAG 0xd |
| 34 | #define EXTENSION_Y420_VDB_TAG 0xe |
| 35 | #define EXTENSION_Y420_CMDB_TAG 0xf |
| 36 | |
| 37 | #define EDID_DETAILED_TIMING_DES_BLOCK0_POS 0x36 |
| 38 | #define EDID_DETAILED_TIMING_DES_BLOCK1_POS 0x48 |
| 39 | #define EDID_DETAILED_TIMING_DES_BLOCK2_POS 0x5A |
| 40 | #define EDID_DETAILED_TIMING_DES_BLOCK3_POS 0x6C |
| 41 | |
| 42 | /* EDID Descrptor Tag */ |
| 43 | #define TAG_PRODUCT_SERIAL_NUMBER 0xFF |
| 44 | #define TAG_ALPHA_DATA_STRING 0xFE |
| 45 | #define TAG_RANGE_LIMITS 0xFD |
| 46 | #define TAG_DISPLAY_PRODUCT_NAME_STRING 0xFC /* MONITOR NAME */ |
| 47 | #define TAG_COLOR_POINT_DATA 0xFB |
| 48 | #define TAG_STANDARD_TIMINGS 0xFA |
| 49 | #define TAG_DISPLAY_COLOR_MANAGEMENT 0xF9 |
| 50 | #define TAG_CVT_TIMING_CODES 0xF8 |
| 51 | #define TAG_ESTABLISHED_TIMING_III 0xF7 |
| 52 | #define TAG_DUMMY_DES 0x10 |
| 53 | |
| 54 | #if 0 |
| 55 | /* retrun 1 valid edid */ |
| 56 | static int check_dvi_hdmi_edid_valid(unsigned char *buf) |
| 57 | { |
| 58 | unsigned int chksum = 0; |
| 59 | unsigned int i = 0; |
| 60 | |
| 61 | /* check block 0 first 8 bytes */ |
| 62 | if ((buf[0] != 0) && (buf[7] != 0)) |
| 63 | return 0; |
| 64 | for (i = 1; i < 7; i++) { |
| 65 | if (buf[i] != 0xff) |
| 66 | return 0; |
| 67 | } |
| 68 | |
| 69 | /* check block 0 checksum */ |
| 70 | for (chksum = 0, i = 0; i < 0x80; i++) |
| 71 | chksum += buf[i]; |
| 72 | if ((chksum & 0xff) != 0) |
| 73 | return 0; |
| 74 | |
| 75 | if (buf[0x7e] == 0)/* check Extension flag at block 0 */ |
| 76 | return 1; |
| 77 | /* check block 1 extension tag */ |
| 78 | else if (!((buf[0x80] == 0x2) || (buf[0x80] == 0xf0))) |
| 79 | return 0; |
| 80 | |
| 81 | /* check block 1 checksum */ |
| 82 | for (chksum = 0, i = 0x80; i < 0x100; i++) |
| 83 | chksum += buf[i]; |
| 84 | if ((chksum & 0xff) != 0) |
| 85 | return 0; |
| 86 | |
| 87 | /* check block 2 checksum */ |
| 88 | if (buf[0x7e] > 1) { |
| 89 | for (chksum = 0, i = 0x100; i < 0x180; i++) |
| 90 | chksum += buf[i]; |
| 91 | if ((chksum & 0xff) != 0) |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | /* check block 3 checksum */ |
| 96 | if (buf[0x7e] > 2) { |
| 97 | for (chksum = 0, i = 0x180; i < 0x200; i++) |
| 98 | chksum += buf[i]; |
| 99 | if ((chksum & 0xff) != 0) |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | return 1; |
| 104 | } |
| 105 | #endif |
| 106 | static void dump_dtd_info(struct dtd *t) |
| 107 | { |
| 108 | return; /* debug only */ |
| 109 | printk("%s[%d]\n", __func__, __LINE__); |
| 110 | #define PR(a) pr_info("%s %d\n", #a, t->a) |
| 111 | PR(pixel_clock); |
| 112 | PR(h_active); |
| 113 | PR(h_blank); |
| 114 | PR(v_active); |
| 115 | PR(v_blank); |
| 116 | PR(h_sync_offset); |
| 117 | PR(h_sync); |
| 118 | PR(v_sync_offset); |
| 119 | PR(v_sync); |
| 120 | } |
| 121 | |
| 122 | static int Edid_ParsingDRMStaticBlock(struct rx_cap *pRXCap, |
| 123 | unsigned char *buf) |
| 124 | { |
| 125 | unsigned char tag = 0, ext_tag = 0, data_end = 0; |
| 126 | unsigned int pos = 0; |
| 127 | |
| 128 | tag = (buf[pos] >> 5) & 0x7; |
| 129 | data_end = (buf[pos] & 0x1f); |
| 130 | memset(pRXCap->hdr_info.rawdata, 0, 7); |
| 131 | memcpy(pRXCap->hdr_info.rawdata, buf, data_end + 1); |
| 132 | pos++; |
| 133 | ext_tag = buf[pos]; |
| 134 | if ((tag != HDMI_EDID_BLOCK_TYPE_EXTENDED_TAG) |
| 135 | || (ext_tag != EXTENSION_DRM_STATIC_TAG)) |
| 136 | goto INVALID_DRM_STATIC; |
| 137 | pos++; |
| 138 | pRXCap->hdr_info.hdr_sup_eotf_sdr = !!(buf[pos] & (0x1 << 0)); |
| 139 | pRXCap->hdr_info.hdr_sup_eotf_hdr = !!(buf[pos] & (0x1 << 1)); |
| 140 | pRXCap->hdr_info.hdr_sup_eotf_smpte_st_2084 = !!(buf[pos] & (0x1 << 2)); |
| 141 | pRXCap->hdr_info.hdr_sup_eotf_hlg = !!(buf[pos] & (0x1 << 3)); |
| 142 | pos++; |
| 143 | pRXCap->hdr_info.hdr_sup_SMD_type1 = !!(buf[pos] & (0x1 << 0)); |
| 144 | pos++; |
| 145 | if (data_end == 3) |
| 146 | return 0; |
| 147 | if (data_end == 4) { |
| 148 | pRXCap->hdr_info.hdr_lum_max = buf[pos]; |
| 149 | return 0; |
| 150 | } |
| 151 | if (data_end == 5) { |
| 152 | pRXCap->hdr_info.hdr_lum_max = buf[pos]; |
| 153 | pRXCap->hdr_info.hdr_lum_avg = buf[pos + 1]; |
| 154 | return 0; |
| 155 | } |
| 156 | if (data_end == 6) { |
| 157 | pRXCap->hdr_info.hdr_lum_max = buf[pos]; |
| 158 | pRXCap->hdr_info.hdr_lum_avg = buf[pos + 1]; |
| 159 | pRXCap->hdr_info.hdr_lum_min = buf[pos + 2]; |
| 160 | return 0; |
| 161 | } |
| 162 | return 0; |
| 163 | INVALID_DRM_STATIC: |
| 164 | printf("[%s] it's not a valid DRM STATIC BLOCK\n", __func__); |
| 165 | return -1; |
| 166 | } |
| 167 | |
| 168 | static void Edid_ParsingVendSpec(struct rx_cap *pRXCap, |
| 169 | unsigned char *buf) |
| 170 | { |
| 171 | struct dv_info *dv = &pRXCap->dv_info; |
| 172 | struct hdr10_plus_info *hdr10_plus = &pRXCap->hdr10plus_info; |
| 173 | unsigned char *dat = buf; |
| 174 | unsigned char pos = 0; |
| 175 | unsigned int ieeeoui = 0; |
| 176 | |
| 177 | memset(dv, 0, sizeof(struct dv_info)); |
| 178 | memset(hdr10_plus, 0, sizeof(struct hdr10_plus_info)); |
| 179 | |
| 180 | dv->block_flag = CORRECT; |
| 181 | dv->length = dat[pos] & 0x1f; |
| 182 | hdr10_plus->length = dat[pos] & 0x1f; |
| 183 | memcpy(dv->rawdata, dat, dv->length + 1); |
| 184 | pos++; |
| 185 | |
| 186 | if (dat[pos] != 1) { |
| 187 | printf("hdmitx: edid: parsing fail %s[%d]\n", __func__, |
| 188 | __LINE__); |
| 189 | return; |
| 190 | } |
| 191 | |
| 192 | pos++; |
| 193 | ieeeoui = dat[pos++]; |
| 194 | ieeeoui += dat[pos++] << 8; |
| 195 | ieeeoui += dat[pos++] << 16; |
| 196 | |
| 197 | /*HDR10+ use vsvdb*/ |
| 198 | if (ieeeoui == HDR10_PLUS_IEEE_OUI) { |
| 199 | hdr10_plus->ieeeoui = ieeeoui; |
| 200 | hdr10_plus->application_version = dat[pos] & 0x3; |
| 201 | pos++; |
| 202 | return; |
| 203 | } |
| 204 | |
| 205 | if (ieeeoui != DV_IEEE_OUI) { |
| 206 | dv->block_flag = ERROR_LENGTH; |
| 207 | return; |
| 208 | } |
| 209 | dv->ieeeoui = ieeeoui; |
| 210 | |
| 211 | dv->ver = (dat[pos] >> 5) & 0x7; |
| 212 | /* Refer to DV 2.9 Page 27 */ |
| 213 | if (dv->ver == 0) { |
| 214 | if (dv->length == 0x19) { |
| 215 | dv->sup_yuv422_12bit = dat[pos] & 0x1; |
| 216 | dv->sup_2160p60hz = (dat[pos] >> 1) & 0x1; |
| 217 | dv->sup_global_dimming = (dat[pos] >> 2) & 0x1; |
| 218 | pos++; |
| 219 | dv->Rx = |
| 220 | (dat[pos+1] << 4) | (dat[pos] >> 4); |
| 221 | dv->Ry = |
| 222 | (dat[pos+2] << 4) | (dat[pos] & 0xf); |
| 223 | pos += 3; |
| 224 | dv->Gx = |
| 225 | (dat[pos+1] << 4) | (dat[pos] >> 4); |
| 226 | dv->Gy = |
| 227 | (dat[pos+2] << 4) | (dat[pos] & 0xf); |
| 228 | pos += 3; |
| 229 | dv->Bx = |
| 230 | (dat[pos+1] << 4) | (dat[pos] >> 4); |
| 231 | dv->By = |
| 232 | (dat[pos+2] << 4) | (dat[pos] & 0xf); |
| 233 | pos += 3; |
| 234 | dv->Wx = |
| 235 | (dat[pos+1] << 4) | (dat[pos] >> 4); |
| 236 | dv->Wy = |
| 237 | (dat[pos+2] << 4) | (dat[pos] & 0xf); |
| 238 | pos += 3; |
| 239 | dv->tminPQ = |
| 240 | (dat[pos+1] << 4) | (dat[pos] >> 4); |
| 241 | dv->tmaxPQ = |
| 242 | (dat[pos+2] << 4) | (dat[pos] & 0xf); |
| 243 | pos += 3; |
| 244 | dv->dm_major_ver = dat[pos] >> 4; |
| 245 | dv->dm_minor_ver = dat[pos] & 0xf; |
| 246 | pos++; |
| 247 | printf("v0 VSVDB: len=%d, sup_2160p60hz=%d\n", |
| 248 | dv->length, dv->sup_2160p60hz); |
| 249 | } else |
| 250 | dv->block_flag = ERROR_LENGTH; |
| 251 | } |
| 252 | |
| 253 | if (dv->ver == 1) { |
| 254 | if (dv->length == 0x0B) {/* Refer to DV 2.9 Page 33 */ |
| 255 | dv->dm_version = (dat[pos] >> 2) & 0x7; |
| 256 | dv->sup_yuv422_12bit = dat[pos] & 0x1; |
| 257 | dv->sup_2160p60hz = (dat[pos] >> 1) & 0x1; |
| 258 | pos++; |
| 259 | dv->sup_global_dimming = dat[pos] & 0x1; |
| 260 | dv->tmaxLUM = dat[pos] >> 1; |
| 261 | pos++; |
| 262 | dv->colorimetry = dat[pos] & 0x1; |
| 263 | dv->tminLUM = dat[pos] >> 1; |
| 264 | pos++; |
| 265 | dv->low_latency = dat[pos] & 0x3; |
| 266 | dv->Bx = 0x20 | ((dat[pos] >> 5) & 0x7); |
| 267 | dv->By = 0x08 | ((dat[pos] >> 2) & 0x7); |
| 268 | pos++; |
| 269 | dv->Gx = 0x00 | (dat[pos] >> 1); |
| 270 | dv->Ry = 0x40 | ((dat[pos] & 0x1) | |
| 271 | ((dat[pos + 1] & 0x1) << 1) | |
| 272 | ((dat[pos + 2] & 0x3) << 2)); |
| 273 | pos++; |
| 274 | dv->Gy = 0x80 | (dat[pos] >> 1); |
| 275 | pos++; |
| 276 | dv->Rx = 0xA0 | (dat[pos] >> 3); |
| 277 | pos++; |
| 278 | printf("v1 VSVDB: len=%d, sup_2160p60hz=%d, low_latency=%d\n", |
| 279 | dv->length, dv->sup_2160p60hz, dv->low_latency); |
| 280 | } else if (dv->length == 0x0E) { |
| 281 | dv->dm_version = (dat[pos] >> 2) & 0x7; |
| 282 | dv->sup_yuv422_12bit = dat[pos] & 0x1; |
| 283 | dv->sup_2160p60hz = (dat[pos] >> 1) & 0x1; |
| 284 | pos++; |
| 285 | dv->sup_global_dimming = dat[pos] & 0x1; |
| 286 | dv->tmaxLUM = dat[pos] >> 1; |
| 287 | pos++; |
| 288 | dv->colorimetry = dat[pos] & 0x1; |
| 289 | dv->tminLUM = dat[pos] >> 1; |
| 290 | pos += 2; /* byte8 is reserved as 0 */ |
| 291 | dv->Rx = dat[pos++]; |
| 292 | dv->Ry = dat[pos++]; |
| 293 | dv->Gx = dat[pos++]; |
| 294 | dv->Gy = dat[pos++]; |
| 295 | dv->Bx = dat[pos++]; |
| 296 | dv->By = dat[pos++]; |
| 297 | printf("v1 VSVDB: len=%d, sup_2160p60hz=%d\n", |
| 298 | dv->length, dv->sup_2160p60hz); |
| 299 | } else |
| 300 | dv->block_flag = ERROR_LENGTH; |
| 301 | } |
| 302 | if (dv->ver == 2) { |
| 303 | /* v2 VSVDB length could be greater than 0xB |
| 304 | * and should not be treated as unrecognized |
| 305 | * block. Instead, we should parse it as a regular |
| 306 | * v2 VSVDB using just the remaining 11 bytes here |
| 307 | */ |
| 308 | if (dv->length >= 0x0B) { |
| 309 | dv->sup_2160p60hz = 0x1;/*default*/ |
| 310 | dv->dm_version = (dat[pos] >> 2) & 0x7; |
| 311 | dv->sup_yuv422_12bit = dat[pos] & 0x1; |
| 312 | dv->sup_backlight_control = (dat[pos] >> 1) & 0x1; |
| 313 | pos++; |
| 314 | dv->sup_global_dimming = (dat[pos] >> 2) & 0x1; |
| 315 | dv->backlt_min_luma = dat[pos] & 0x3; |
| 316 | dv->tminPQ = dat[pos] >> 3; |
| 317 | pos++; |
| 318 | dv->Interface = dat[pos] & 0x3; |
| 319 | dv->tmaxPQ = dat[pos] >> 3; |
| 320 | pos++; |
| 321 | dv->sup_10b_12b_444 = ((dat[pos] & 0x1) << 1) | |
| 322 | (dat[pos + 1] & 0x1); |
| 323 | dv->Gx = 0x00 | (dat[pos] >> 1); |
| 324 | pos++; |
| 325 | dv->Gy = 0x80 | (dat[pos] >> 1); |
| 326 | pos++; |
| 327 | dv->Rx = 0xA0 | (dat[pos] >> 3); |
| 328 | dv->Bx = 0x20 | (dat[pos] & 0x7); |
| 329 | pos++; |
| 330 | dv->Ry = 0x40 | (dat[pos] >> 3); |
| 331 | dv->By = 0x08 | (dat[pos] & 0x7); |
| 332 | pos++; |
| 333 | printf("v2 VSVDB: len=%d, sup_2160p60hz=%d, Interface=%d\n", |
| 334 | dv->length, dv->sup_2160p60hz, dv->Interface); |
| 335 | } else |
| 336 | dv->block_flag = ERROR_LENGTH; |
| 337 | } |
| 338 | |
| 339 | if (pos > dv->length) |
| 340 | pr_info("hdmitx: edid: maybe invalid dv%d data\n", dv->ver); |
| 341 | } |
| 342 | |
| 343 | static void Edid_DTD_parsing(struct rx_cap *pRXCap, unsigned char *data) |
| 344 | { |
| 345 | struct hdmi_format_para *para = NULL; |
| 346 | struct dtd *t = &pRXCap->dtd[pRXCap->dtd_idx]; |
| 347 | |
| 348 | memset(t, 0, sizeof(struct dtd)); |
| 349 | t->pixel_clock = data[0] + (data[1] << 8); |
| 350 | t->h_active = (((data[4] >> 4) & 0xf) << 8) + data[2]; |
| 351 | t->h_blank = ((data[4] & 0xf) << 8) + data[3]; |
| 352 | t->v_active = (((data[7] >> 4) & 0xf) << 8) + data[5]; |
| 353 | t->v_blank = ((data[7] & 0xf) << 8) + data[6]; |
| 354 | t->h_sync_offset = (((data[11] >> 6) & 0x3) << 8) + data[8]; |
| 355 | t->h_sync = (((data[11] >> 4) & 0x3) << 8) + data[9]; |
| 356 | t->v_sync_offset = (((data[11] >> 2) & 0x3) << 4) + |
| 357 | ((data[10] >> 4) & 0xf); |
| 358 | t->v_sync = (((data[11] >> 0) & 0x3) << 4) + ((data[10] >> 0) & 0xf); |
| 359 | /* |
| 360 | * Special handling of 1080i60hz, 1080i50hz |
| 361 | */ |
| 362 | if ((t->pixel_clock == 7425) && (t->h_active == 1920) && |
| 363 | (t->v_active == 1080)) { |
| 364 | t->v_active = t->v_active / 2; |
| 365 | t->v_blank = t->v_blank / 2; |
| 366 | } |
| 367 | /* |
| 368 | * Special handling of 480i60hz, 576i50hz |
| 369 | */ |
| 370 | if (((((t->flags) >> 1) & 0x3) == 0) && (t->h_active == 1440)) { |
| 371 | if (t->pixel_clock == 2700) /* 576i50hz */ |
| 372 | goto next; |
| 373 | if ((t->pixel_clock - 2700) < 10) /* 480i60hz */ |
| 374 | t->pixel_clock = 2702; |
| 375 | next: |
| 376 | t->v_active = t->v_active / 2; |
| 377 | t->v_blank = t->v_blank / 2; |
| 378 | } |
| 379 | /* |
| 380 | * call hdmi_match_dtd_paras() to check t is matched with VIC |
| 381 | */ |
| 382 | para = hdmi_match_dtd_paras(t); |
| 383 | if (para) { |
| 384 | t->vic = para->vic; |
| 385 | pRXCap->preferred_mode = pRXCap->dtd[0].vic; /* Select dtd0 */ |
| 386 | if (0) /* debug only */ |
| 387 | pr_info("hdmitx: get dtd%d vic: %d\n", |
| 388 | pRXCap->dtd_idx, para->vic); |
| 389 | pRXCap->dtd_idx++; |
| 390 | } else |
| 391 | dump_dtd_info(t); |
| 392 | } |
| 393 | |
| 394 | /* parse Sink 4k2k information */ |
| 395 | static void hdmitx_edid_4k2k_parse(struct rx_cap *pRXCap, unsigned char *dat, |
| 396 | unsigned size) |
| 397 | { |
| 398 | if ((size > 4) || (size == 0)) { |
| 399 | return; |
| 400 | } |
| 401 | while (size--) { |
| 402 | if (*dat == 1) |
| 403 | pRXCap->VIC[pRXCap->VIC_count] = HDMI_3840x2160p30_16x9; |
| 404 | else if (*dat == 2) |
| 405 | pRXCap->VIC[pRXCap->VIC_count] = HDMI_3840x2160p25_16x9; |
| 406 | else if (*dat == 3) |
| 407 | pRXCap->VIC[pRXCap->VIC_count] = HDMI_3840x2160p24_16x9; |
| 408 | else if (*dat == 4) |
| 409 | pRXCap->VIC[pRXCap->VIC_count] = HDMI_4096x2160p24_256x135; |
| 410 | else |
| 411 | ; |
| 412 | dat++; |
| 413 | pRXCap->VIC_count++; |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | static void set_vsdb_dc_cap(struct rx_cap *pRXCap) |
| 418 | { |
| 419 | pRXCap->dc_y444 = !!(pRXCap->ColorDeepSupport & (1 << 3)); |
| 420 | pRXCap->dc_30bit = !!(pRXCap->ColorDeepSupport & (1 << 4)); |
| 421 | pRXCap->dc_36bit = !!(pRXCap->ColorDeepSupport & (1 << 5)); |
| 422 | pRXCap->dc_48bit = !!(pRXCap->ColorDeepSupport & (1 << 6)); |
| 423 | } |
| 424 | |
| 425 | static void set_vsdb_dc_420_cap(struct rx_cap *pRXCap, |
| 426 | unsigned char *edid_offset) |
| 427 | { |
| 428 | pRXCap->dc_30bit_420 = !!(edid_offset[6] & (1 << 0)); |
| 429 | pRXCap->dc_36bit_420 = !!(edid_offset[6] & (1 << 1)); |
| 430 | pRXCap->dc_48bit_420 = !!(edid_offset[6] & (1 << 2)); |
| 431 | } |
| 432 | |
| 433 | static int Edid_ParsingY420VDBBlock(struct rx_cap *pRXCap, |
| 434 | unsigned char *buf) |
| 435 | { |
| 436 | unsigned char tag = 0, ext_tag = 0, data_end = 0; |
| 437 | unsigned int pos = 0; |
| 438 | int i = 0, found = 0; |
| 439 | |
| 440 | tag = (buf[pos] >> 5) & 0x7; |
| 441 | data_end = (buf[pos] & 0x1f)+1; |
| 442 | pos++; |
| 443 | ext_tag = buf[pos]; |
| 444 | |
| 445 | if ((tag != 0x7) || (ext_tag != 0xe)) |
| 446 | goto INVALID_Y420VDB; |
| 447 | |
| 448 | pRXCap->dc_y420 = 1; |
| 449 | pos++; |
| 450 | while (pos < data_end) { |
| 451 | if (pRXCap->VIC_count < VIC_MAX_NUM) { |
| 452 | for (i = 0; i < pRXCap->VIC_count; i++) { |
| 453 | if (pRXCap->VIC[i] == buf[pos]) { |
| 454 | pRXCap->VIC[i] = |
| 455 | HDMITX_VIC420_OFFSET + buf[pos]; |
| 456 | found = 1; |
| 457 | /* Here we do not break,because |
| 458 | some EDID may have the same |
| 459 | repeated VICs |
| 460 | */ |
| 461 | } |
| 462 | } |
| 463 | if (0 == found) { |
| 464 | pRXCap->VIC[pRXCap->VIC_count] = |
| 465 | HDMITX_VIC420_OFFSET + buf[pos]; |
| 466 | pRXCap->VIC_count++; |
| 467 | } |
| 468 | } |
| 469 | pos++; |
| 470 | } |
| 471 | |
| 472 | return 0; |
| 473 | |
| 474 | INVALID_Y420VDB: |
| 475 | pr_info("[%s] it's not a valid y420vdb!\n", __func__); |
| 476 | return -1; |
| 477 | } |
| 478 | |
| 479 | static int Edid_ParsingY420CMDBBlock(struct rx_cap *pRXCap, |
| 480 | unsigned char *buf) |
| 481 | { |
| 482 | unsigned char tag = 0, ext_tag = 0, length = 0, data_end = 0; |
| 483 | unsigned int pos = 0, i = 0; |
| 484 | |
| 485 | tag = (buf[pos] >> 5) & 0x7; |
| 486 | length = buf[pos] & 0x1f; |
| 487 | data_end = length + 1; |
| 488 | pos++; |
| 489 | ext_tag = buf[pos]; |
| 490 | |
| 491 | if ((tag != 0x7) || (ext_tag != 0xf)) |
| 492 | goto INVALID_Y420CMDB; |
| 493 | |
| 494 | if (length == 1) { |
| 495 | pRXCap->y420_all_vic = 1; |
| 496 | return 0; |
| 497 | } |
| 498 | |
| 499 | pRXCap->bitmap_length = 0; |
| 500 | pRXCap->bitmap_valid = 0; |
| 501 | memset(pRXCap->y420cmdb_bitmap, 0x00, Y420CMDB_MAX); |
| 502 | |
| 503 | pos++; |
| 504 | if (pos < data_end) { |
| 505 | pRXCap->bitmap_length = data_end - pos; |
| 506 | pRXCap->bitmap_valid = 1; |
| 507 | } |
| 508 | while (pos < data_end) { |
| 509 | if (i < Y420CMDB_MAX) |
| 510 | pRXCap->y420cmdb_bitmap[i] = buf[pos]; |
| 511 | pos++; |
| 512 | i++; |
| 513 | } |
| 514 | |
| 515 | return 0; |
| 516 | |
| 517 | INVALID_Y420CMDB: |
| 518 | pr_info("[%s] it's not a valid y420cmdb!\n", __func__); |
| 519 | return -1; |
| 520 | } |
| 521 | |
| 522 | static int Edid_Y420CMDB_fill_all_vic(struct rx_cap *pRXCap) |
| 523 | { |
| 524 | unsigned int count = pRXCap->VIC_count; |
| 525 | unsigned int a, b; |
| 526 | |
| 527 | if (pRXCap->y420_all_vic != 1) |
| 528 | return 1; |
| 529 | |
| 530 | a = count/8; |
| 531 | a = (a >= Y420CMDB_MAX)?Y420CMDB_MAX:a; |
| 532 | b = count%8; |
| 533 | |
| 534 | if (a > 0) |
| 535 | memset(&(pRXCap->y420cmdb_bitmap[0]), 0xff, a); |
| 536 | |
| 537 | if ((b != 0) && (a < Y420CMDB_MAX)) |
| 538 | pRXCap->y420cmdb_bitmap[a] = (((1 << b) - 1) << (8-b)); |
| 539 | |
| 540 | pRXCap->bitmap_length = (b == 0) ? a : (a + 1); |
| 541 | pRXCap->bitmap_valid = (pRXCap->bitmap_length != 0)?1:0; |
| 542 | |
| 543 | return 0; |
| 544 | } |
| 545 | |
| 546 | static int Edid_Y420CMDB_PostProcess(struct rx_cap *pRXCap) |
| 547 | { |
| 548 | unsigned int i = 0, j = 0, valid = 0; |
| 549 | unsigned char *p = NULL; |
| 550 | |
| 551 | if (pRXCap->y420_all_vic == 1) |
| 552 | Edid_Y420CMDB_fill_all_vic(pRXCap); |
| 553 | |
| 554 | if (pRXCap->bitmap_valid == 0) |
| 555 | goto PROCESS_END; |
| 556 | |
| 557 | pRXCap->dc_y420 = 1; |
| 558 | for (i = 0; i < pRXCap->bitmap_length; i++) { |
| 559 | p = &(pRXCap->y420cmdb_bitmap[i]); |
| 560 | for (j = 0; j < 8; j++) { |
| 561 | valid = ((*p >> j) & 0x1); |
| 562 | if (valid != 0) { |
| 563 | pRXCap->VIC[pRXCap->VIC_count] = |
| 564 | HDMITX_VIC420_OFFSET + pRXCap->VIC[i*8+j]; |
| 565 | pRXCap->VIC_count++; |
| 566 | } |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | PROCESS_END: |
| 571 | return 0; |
| 572 | } |
| 573 | |
| 574 | static int Edid_ParsingVFPDB(struct rx_cap *pRXCap, unsigned char *buf) |
| 575 | { |
| 576 | unsigned int len = buf[0] & 0x1f; |
| 577 | enum hdmi_vic svr = HDMI_unkown; |
| 578 | |
| 579 | if (buf[1] != EXTENSION_VFPDB_TAG) |
| 580 | return 0; |
| 581 | if (len < 2) |
| 582 | return 0; |
| 583 | |
| 584 | svr = buf[2]; |
| 585 | if (((svr >= 1) && (svr <= 127)) || |
| 586 | ((svr >= 193) && (svr <= 253))) { |
| 587 | pRXCap->flag_vfpdb = 1; |
| 588 | pRXCap->preferred_mode = svr; |
| 589 | pr_info("preferred mode 0 srv %d\n", pRXCap->preferred_mode); |
| 590 | return 1; |
| 591 | } |
| 592 | if ((svr >= 129) && (svr <= 144)) { |
| 593 | pRXCap->flag_vfpdb = 1; |
| 594 | pRXCap->preferred_mode = pRXCap->dtd[svr - 129].vic; |
| 595 | pr_info("preferred mode 0 dtd %d\n", pRXCap->preferred_mode); |
| 596 | return 1; |
| 597 | } |
| 598 | return 0; |
| 599 | } |
| 600 | |
| 601 | static int hdmitx_edid_block_parse(struct rx_cap *pRXCap, |
| 602 | unsigned char *BlockBuf) |
| 603 | { |
| 604 | unsigned char offset, End; |
| 605 | unsigned char count; |
| 606 | unsigned char tag; |
| 607 | int i, tmp, idx; |
| 608 | unsigned char *vfpdb_offset = NULL; |
| 609 | |
| 610 | if (BlockBuf[0] != 0x02) |
| 611 | return -1; /* not a CEA BLOCK. */ |
| 612 | End = BlockBuf[2]; /* CEA description. */ |
| 613 | pRXCap->native_Mode = BlockBuf[3]; |
| 614 | pRXCap->number_of_dtd += BlockBuf[3] & 0xf; |
| 615 | /* bit 5 (YCBCR 4:4:4) = 1 if sink device supports YCBCR 4:4:4 |
| 616 | * in addition to RGB; |
| 617 | * bit 4 (YCBCR 4:2:2) = 1 if sink device supports YCBCR 4:2:2 |
| 618 | * in addition to RGB |
| 619 | */ |
| 620 | pRXCap->pref_colorspace = BlockBuf[3] & 0x30; |
| 621 | |
| 622 | pRXCap->native_VIC = 0xff; |
| 623 | |
| 624 | for (offset = 4 ; offset < End ; ) { |
| 625 | tag = BlockBuf[offset] >> 5; |
| 626 | count = BlockBuf[offset] & 0x1f; |
| 627 | switch (tag) { |
| 628 | case HDMI_EDID_BLOCK_TYPE_AUDIO: |
| 629 | offset++; |
| 630 | offset += count; |
| 631 | break; |
| 632 | |
| 633 | case HDMI_EDID_BLOCK_TYPE_VIDEO: |
| 634 | offset++; |
| 635 | for (i = 0 ; i < count ; i++) { |
| 636 | unsigned char VIC; |
| 637 | VIC = BlockBuf[offset + i] & (~0x80); |
| 638 | pRXCap->VIC[pRXCap->VIC_count] = VIC; |
| 639 | if (BlockBuf[offset + i] & 0x80) |
| 640 | pRXCap->native_VIC = VIC; |
| 641 | pRXCap->VIC_count++; |
| 642 | } |
| 643 | offset += count; |
| 644 | break; |
| 645 | |
| 646 | case HDMI_EDID_BLOCK_TYPE_VENDER: |
| 647 | offset++; |
| 648 | if ((BlockBuf[offset] == 0x03) && |
| 649 | (BlockBuf[offset+1] == 0x0c) && |
| 650 | (BlockBuf[offset+2] == 0x00)) |
| 651 | pRXCap->IEEEOUI = 0x000c03; |
| 652 | else |
| 653 | goto case_hf; |
| 654 | pRXCap->ColorDeepSupport = |
| 655 | (unsigned long)BlockBuf[offset+5]; |
| 656 | printf("HDMI_EDID_BLOCK_TYPE_VENDER: pRXCap->ColorDeepSupport=0x%x\n", pRXCap->ColorDeepSupport); |
| 657 | set_vsdb_dc_cap(pRXCap); |
| 658 | pRXCap->Max_TMDS_Clock1 = |
| 659 | (unsigned long)BlockBuf[offset+6]; |
| 660 | if (count > 7) { |
| 661 | tmp = BlockBuf[offset+7]; |
| 662 | idx = offset + 8; |
| 663 | if (tmp & (1<<6)) |
| 664 | idx += 2; |
| 665 | if (tmp & (1<<7)) |
| 666 | idx += 2; |
| 667 | if (tmp & (1<<5)) { |
| 668 | idx += 1; |
| 669 | /* valid 4k */ |
| 670 | if (BlockBuf[idx] & 0xe0) { |
| 671 | hdmitx_edid_4k2k_parse( |
| 672 | pRXCap, |
| 673 | &BlockBuf[idx + 1], |
| 674 | BlockBuf[idx] >> 5); |
| 675 | } |
| 676 | } |
| 677 | } |
| 678 | goto case_next; |
| 679 | case_hf: |
| 680 | if ((BlockBuf[offset] == 0xd8) && |
| 681 | (BlockBuf[offset+1] == 0x5d) && |
| 682 | (BlockBuf[offset+2] == 0xc4)) |
| 683 | pRXCap->HF_IEEEOUI = 0xd85dc4; |
| 684 | pRXCap->Max_TMDS_Clock2 = BlockBuf[offset+4]; |
| 685 | pRXCap->scdc_present = |
| 686 | !!(BlockBuf[offset+5] & (1 << 7)); |
| 687 | pRXCap->scdc_rr_capable = |
| 688 | !!(BlockBuf[offset+5] & (1 << 6)); |
| 689 | pRXCap->lte_340mcsc_scramble = |
| 690 | !!(BlockBuf[offset+5] & (1 << 3)); |
| 691 | set_vsdb_dc_420_cap(pRXCap, |
| 692 | &BlockBuf[offset]); |
| 693 | case_next: |
| 694 | offset += count; /* ignore the remaind. */ |
| 695 | break; |
| 696 | |
| 697 | case HDMI_EDID_BLOCK_TYPE_SPEAKER: |
| 698 | offset++; |
| 699 | offset += count; |
| 700 | break; |
| 701 | |
| 702 | case HDMI_EDID_BLOCK_TYPE_VESA: |
| 703 | offset++; |
| 704 | offset += count; |
| 705 | break; |
| 706 | |
| 707 | case HDMI_EDID_BLOCK_TYPE_EXTENDED_TAG: |
| 708 | { |
| 709 | unsigned char ext_tag = 0; |
| 710 | |
| 711 | ext_tag = BlockBuf[offset+1]; |
| 712 | switch (ext_tag) { |
| 713 | case EXTENSION_VENDOR_SPECIFIC: |
| 714 | Edid_ParsingVendSpec(pRXCap, |
| 715 | &BlockBuf[offset]); |
| 716 | break; |
| 717 | case EXTENSION_COLORMETRY_TAG: |
| 718 | pRXCap->colorimetry_data = |
| 719 | BlockBuf[offset + 2]; |
| 720 | break; |
| 721 | case EXTENSION_DRM_STATIC_TAG: |
| 722 | Edid_ParsingDRMStaticBlock(pRXCap, |
| 723 | &BlockBuf[offset]); |
| 724 | break; |
| 725 | case EXTENSION_VFPDB_TAG: |
| 726 | /* Just record VFPDB offset address, call Edid_ParsingVFPDB() after DTD |
| 727 | * parsing, in case that |
| 728 | * SVR >=129 and SVR <=144, Interpret as the Kth DTD in the EDID, |
| 729 | * where K = SVR – 128 (for K=1 to 16) |
| 730 | */ |
| 731 | vfpdb_offset = &BlockBuf[offset]; |
| 732 | break; |
| 733 | case EXTENSION_Y420_VDB_TAG: |
| 734 | Edid_ParsingY420VDBBlock(pRXCap, |
| 735 | &BlockBuf[offset]); |
| 736 | break; |
| 737 | case EXTENSION_Y420_CMDB_TAG: |
| 738 | Edid_ParsingY420CMDBBlock(pRXCap, |
| 739 | &BlockBuf[offset]); |
| 740 | break; |
| 741 | default: |
| 742 | break; |
| 743 | } |
| 744 | } |
| 745 | offset += count+1; |
| 746 | break; |
| 747 | |
| 748 | case HDMI_EDID_BLOCK_TYPE_RESERVED: |
| 749 | offset++; |
| 750 | offset += count; |
| 751 | break; |
| 752 | |
| 753 | case HDMI_EDID_BLOCK_TYPE_RESERVED2: |
| 754 | offset++; |
| 755 | offset += count; |
| 756 | break; |
| 757 | |
| 758 | default: |
| 759 | break; |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | Edid_Y420CMDB_PostProcess(pRXCap); |
| 764 | idx = BlockBuf[3] & 0xf; |
| 765 | for (i = 0; i < idx; i++) |
| 766 | Edid_DTD_parsing(pRXCap, &BlockBuf[BlockBuf[2] + i * 18]); |
| 767 | if (vfpdb_offset) |
| 768 | Edid_ParsingVFPDB(pRXCap, vfpdb_offset); |
| 769 | |
| 770 | return 0; |
| 771 | } |
| 772 | |
| 773 | void Edid_MonitorCapable861(struct rx_cap *pRXCap, |
| 774 | unsigned char edid_flag) |
| 775 | { |
| 776 | if (edid_flag & 0x20) |
| 777 | pRXCap->support_ycbcr444_flag = 1; |
| 778 | if (edid_flag & 0x10) |
| 779 | pRXCap->support_ycbcr422_flag = 1; |
| 780 | printf("Edid_MonitorCapable861: ycbcr444=%d, ycbcr422=%d\n", |
| 781 | pRXCap->support_ycbcr444_flag, pRXCap->support_ycbcr422_flag); |
| 782 | } |
| 783 | |
| 784 | /* |
| 785 | * Parsing RAW EDID data from edid to pRXCap |
| 786 | */ |
| 787 | unsigned int hdmi_edid_parsing(unsigned char *EDID_buf, struct rx_cap *pRXCap) |
| 788 | { |
| 789 | int i, j; |
| 790 | int BlockCount = EDID_buf[126]; |
| 791 | int idx[4]; |
| 792 | unsigned char CheckSum; |
| 793 | |
| 794 | /* Clear all parsing data */ |
| 795 | memset(pRXCap, 0, sizeof(struct rx_cap)); |
| 796 | pRXCap->IEEEOUI = 0x000c03; /* Default is HDMI device */ |
| 797 | |
| 798 | /* If edid data corrupted, no parse */ |
| 799 | /* |
| 800 | if (check_dvi_hdmi_edid_valid(EDID_buf) == 0) |
| 801 | return 0; |
| 802 | */ |
| 803 | |
| 804 | idx[0] = EDID_DETAILED_TIMING_DES_BLOCK0_POS; |
| 805 | idx[1] = EDID_DETAILED_TIMING_DES_BLOCK1_POS; |
| 806 | idx[2] = EDID_DETAILED_TIMING_DES_BLOCK2_POS; |
| 807 | idx[3] = EDID_DETAILED_TIMING_DES_BLOCK3_POS; |
| 808 | for (i = 0; i < 4; i++) { |
| 809 | if ((EDID_buf[idx[i]]) && (EDID_buf[idx[i] + 1])) |
| 810 | Edid_DTD_parsing(pRXCap, &EDID_buf[idx[i]]); |
| 811 | } |
| 812 | |
| 813 | if (BlockCount == 0) |
| 814 | pRXCap->IEEEOUI = 0; |
| 815 | |
| 816 | for (i = 1; i <= BlockCount; i++) { |
| 817 | if ((BlockCount > 1) && (i == 1)) |
| 818 | CheckSum = 0; /* ignore the block1 data */ |
| 819 | else { |
| 820 | for (j = 0, CheckSum = 0 ; j < 128 ; j++) { |
| 821 | CheckSum += EDID_buf[i*128 + j]; |
| 822 | CheckSum &= 0xFF; |
| 823 | } |
| 824 | if (CheckSum == 0) { |
| 825 | Edid_MonitorCapable861( |
| 826 | pRXCap, |
| 827 | EDID_buf[i * 128 + 3]); |
| 828 | } |
| 829 | } |
| 830 | if (EDID_buf[i*128+0] == 0x2) |
| 831 | hdmitx_edid_block_parse(pRXCap, &(EDID_buf[i*128])); |
| 832 | } |
| 833 | |
| 834 | /* |
| 835 | * Because DTDs are not able to represent some Video Formats, which can be |
| 836 | * represented as SVDs and might be preferred by Sinks, the first DTD in the |
| 837 | * base EDID data structure and the first SVD in the first CEA Extension can |
| 838 | * differ. When the first DTD and SVD do not match and the total number of |
| 839 | * DTDs defining Native Video Formats in the whole EDID is zero, the first |
| 840 | * SVD shall take precedence. |
| 841 | */ |
| 842 | if (!pRXCap->flag_vfpdb && (pRXCap->preferred_mode != pRXCap->VIC[0]) && |
| 843 | (pRXCap->number_of_dtd == 0)) { |
| 844 | pr_info("hdmitx: edid: change preferred_mode from %d to %d\n", |
| 845 | pRXCap->preferred_mode, pRXCap->VIC[0]); |
| 846 | pRXCap->preferred_mode = pRXCap->VIC[0]; |
| 847 | } |
| 848 | |
| 849 | return 1; |
| 850 | } |