Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Avionic Design GmbH |
| 3 | * |
Thierry Reding | 96d672e0 | 2013-04-08 12:48:19 +0000 | [diff] [blame] | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sub license, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the |
| 12 | * next paragraph) shall be included in all copies or substantial portions |
| 13 | * of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 21 | * DEALINGS IN THE SOFTWARE. |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 22 | */ |
| 23 | |
| 24 | #include <linux/bitops.h> |
Damien Lespiau | 72b0989 | 2013-08-06 20:32:14 +0100 | [diff] [blame] | 25 | #include <linux/bug.h> |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 26 | #include <linux/errno.h> |
| 27 | #include <linux/export.h> |
| 28 | #include <linux/hdmi.h> |
| 29 | #include <linux/string.h> |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 30 | #include <linux/device.h> |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 31 | |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 32 | #define hdmi_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__) |
| 33 | |
| 34 | static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 35 | { |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 36 | u8 csum = 0; |
| 37 | size_t i; |
| 38 | |
| 39 | /* compute checksum */ |
| 40 | for (i = 0; i < size; i++) |
| 41 | csum += ptr[i]; |
| 42 | |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 43 | return 256 - csum; |
| 44 | } |
| 45 | |
| 46 | static void hdmi_infoframe_set_checksum(void *buffer, size_t size) |
| 47 | { |
| 48 | u8 *ptr = buffer; |
| 49 | |
| 50 | ptr[3] = hdmi_infoframe_checksum(buffer, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 51 | } |
| 52 | |
| 53 | /** |
| 54 | * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe |
| 55 | * @frame: HDMI AVI infoframe |
| 56 | * |
| 57 | * Returns 0 on success or a negative error code on failure. |
| 58 | */ |
| 59 | int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame) |
| 60 | { |
| 61 | memset(frame, 0, sizeof(*frame)); |
| 62 | |
| 63 | frame->type = HDMI_INFOFRAME_TYPE_AVI; |
| 64 | frame->version = 2; |
Damien Lespiau | 3c6b054 | 2013-08-06 20:32:13 +0100 | [diff] [blame] | 65 | frame->length = HDMI_AVI_INFOFRAME_SIZE; |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 66 | |
| 67 | return 0; |
| 68 | } |
| 69 | EXPORT_SYMBOL(hdmi_avi_infoframe_init); |
| 70 | |
| 71 | /** |
| 72 | * hdmi_avi_infoframe_pack() - write HDMI AVI infoframe to binary buffer |
| 73 | * @frame: HDMI AVI infoframe |
| 74 | * @buffer: destination buffer |
| 75 | * @size: size of buffer |
| 76 | * |
| 77 | * Packs the information contained in the @frame structure into a binary |
| 78 | * representation that can be written into the corresponding controller |
| 79 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 80 | * the HDMI 1.4 specification. |
| 81 | * |
| 82 | * Returns the number of bytes packed into the binary buffer or a negative |
| 83 | * error code on failure. |
| 84 | */ |
| 85 | ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, |
| 86 | size_t size) |
| 87 | { |
| 88 | u8 *ptr = buffer; |
| 89 | size_t length; |
| 90 | |
| 91 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
| 92 | |
| 93 | if (size < length) |
| 94 | return -ENOSPC; |
| 95 | |
Damien Lespiau | 3b390f6 | 2013-08-06 20:32:16 +0100 | [diff] [blame] | 96 | memset(buffer, 0, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 97 | |
| 98 | ptr[0] = frame->type; |
| 99 | ptr[1] = frame->version; |
| 100 | ptr[2] = frame->length; |
| 101 | ptr[3] = 0; /* checksum */ |
| 102 | |
| 103 | /* start infoframe payload */ |
| 104 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 105 | |
| 106 | ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3); |
| 107 | |
Lespiau, Damien | a5ad3dc | 2013-08-19 16:58:56 +0100 | [diff] [blame] | 108 | /* |
| 109 | * Data byte 1, bit 4 has to be set if we provide the active format |
| 110 | * aspect ratio |
| 111 | */ |
| 112 | if (frame->active_aspect & 0xf) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 113 | ptr[0] |= BIT(4); |
| 114 | |
Lespiau, Damien | 974e070 | 2013-08-19 16:58:57 +0100 | [diff] [blame] | 115 | /* Bit 3 and 2 indicate if we transmit horizontal/vertical bar data */ |
| 116 | if (frame->top_bar || frame->bottom_bar) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 117 | ptr[0] |= BIT(3); |
| 118 | |
Lespiau, Damien | 974e070 | 2013-08-19 16:58:57 +0100 | [diff] [blame] | 119 | if (frame->left_bar || frame->right_bar) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 120 | ptr[0] |= BIT(2); |
| 121 | |
| 122 | ptr[1] = ((frame->colorimetry & 0x3) << 6) | |
| 123 | ((frame->picture_aspect & 0x3) << 4) | |
| 124 | (frame->active_aspect & 0xf); |
| 125 | |
| 126 | ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) | |
| 127 | ((frame->quantization_range & 0x3) << 2) | |
| 128 | (frame->nups & 0x3); |
| 129 | |
| 130 | if (frame->itc) |
| 131 | ptr[2] |= BIT(7); |
| 132 | |
| 133 | ptr[3] = frame->video_code & 0x7f; |
| 134 | |
| 135 | ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) | |
| 136 | ((frame->content_type & 0x3) << 4) | |
| 137 | (frame->pixel_repeat & 0xf); |
| 138 | |
| 139 | ptr[5] = frame->top_bar & 0xff; |
| 140 | ptr[6] = (frame->top_bar >> 8) & 0xff; |
| 141 | ptr[7] = frame->bottom_bar & 0xff; |
| 142 | ptr[8] = (frame->bottom_bar >> 8) & 0xff; |
| 143 | ptr[9] = frame->left_bar & 0xff; |
| 144 | ptr[10] = (frame->left_bar >> 8) & 0xff; |
| 145 | ptr[11] = frame->right_bar & 0xff; |
| 146 | ptr[12] = (frame->right_bar >> 8) & 0xff; |
| 147 | |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 148 | hdmi_infoframe_set_checksum(buffer, length); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 149 | |
| 150 | return length; |
| 151 | } |
| 152 | EXPORT_SYMBOL(hdmi_avi_infoframe_pack); |
| 153 | |
| 154 | /** |
| 155 | * hdmi_spd_infoframe_init() - initialize an HDMI SPD infoframe |
| 156 | * @frame: HDMI SPD infoframe |
| 157 | * @vendor: vendor string |
| 158 | * @product: product string |
| 159 | * |
| 160 | * Returns 0 on success or a negative error code on failure. |
| 161 | */ |
| 162 | int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, |
| 163 | const char *vendor, const char *product) |
| 164 | { |
| 165 | memset(frame, 0, sizeof(*frame)); |
| 166 | |
| 167 | frame->type = HDMI_INFOFRAME_TYPE_SPD; |
| 168 | frame->version = 1; |
Damien Lespiau | 3c6b054 | 2013-08-06 20:32:13 +0100 | [diff] [blame] | 169 | frame->length = HDMI_SPD_INFOFRAME_SIZE; |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 170 | |
| 171 | strncpy(frame->vendor, vendor, sizeof(frame->vendor)); |
| 172 | strncpy(frame->product, product, sizeof(frame->product)); |
| 173 | |
| 174 | return 0; |
| 175 | } |
| 176 | EXPORT_SYMBOL(hdmi_spd_infoframe_init); |
| 177 | |
| 178 | /** |
| 179 | * hdmi_spd_infoframe_pack() - write HDMI SPD infoframe to binary buffer |
| 180 | * @frame: HDMI SPD infoframe |
| 181 | * @buffer: destination buffer |
| 182 | * @size: size of buffer |
| 183 | * |
| 184 | * Packs the information contained in the @frame structure into a binary |
| 185 | * representation that can be written into the corresponding controller |
| 186 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 187 | * the HDMI 1.4 specification. |
| 188 | * |
| 189 | * Returns the number of bytes packed into the binary buffer or a negative |
| 190 | * error code on failure. |
| 191 | */ |
| 192 | ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer, |
| 193 | size_t size) |
| 194 | { |
| 195 | u8 *ptr = buffer; |
| 196 | size_t length; |
| 197 | |
| 198 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
| 199 | |
| 200 | if (size < length) |
| 201 | return -ENOSPC; |
| 202 | |
Damien Lespiau | 3b390f6 | 2013-08-06 20:32:16 +0100 | [diff] [blame] | 203 | memset(buffer, 0, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 204 | |
| 205 | ptr[0] = frame->type; |
| 206 | ptr[1] = frame->version; |
| 207 | ptr[2] = frame->length; |
| 208 | ptr[3] = 0; /* checksum */ |
| 209 | |
| 210 | /* start infoframe payload */ |
| 211 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 212 | |
| 213 | memcpy(ptr, frame->vendor, sizeof(frame->vendor)); |
| 214 | memcpy(ptr + 8, frame->product, sizeof(frame->product)); |
| 215 | |
| 216 | ptr[24] = frame->sdi; |
| 217 | |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 218 | hdmi_infoframe_set_checksum(buffer, length); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 219 | |
| 220 | return length; |
| 221 | } |
| 222 | EXPORT_SYMBOL(hdmi_spd_infoframe_pack); |
| 223 | |
| 224 | /** |
| 225 | * hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe |
| 226 | * @frame: HDMI audio infoframe |
| 227 | * |
| 228 | * Returns 0 on success or a negative error code on failure. |
| 229 | */ |
| 230 | int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame) |
| 231 | { |
| 232 | memset(frame, 0, sizeof(*frame)); |
| 233 | |
| 234 | frame->type = HDMI_INFOFRAME_TYPE_AUDIO; |
| 235 | frame->version = 1; |
Damien Lespiau | 3c6b054 | 2013-08-06 20:32:13 +0100 | [diff] [blame] | 236 | frame->length = HDMI_AUDIO_INFOFRAME_SIZE; |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 237 | |
| 238 | return 0; |
| 239 | } |
| 240 | EXPORT_SYMBOL(hdmi_audio_infoframe_init); |
| 241 | |
| 242 | /** |
| 243 | * hdmi_audio_infoframe_pack() - write HDMI audio infoframe to binary buffer |
| 244 | * @frame: HDMI audio infoframe |
| 245 | * @buffer: destination buffer |
| 246 | * @size: size of buffer |
| 247 | * |
| 248 | * Packs the information contained in the @frame structure into a binary |
| 249 | * representation that can be written into the corresponding controller |
| 250 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 251 | * the HDMI 1.4 specification. |
| 252 | * |
| 253 | * Returns the number of bytes packed into the binary buffer or a negative |
| 254 | * error code on failure. |
| 255 | */ |
| 256 | ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, |
| 257 | void *buffer, size_t size) |
| 258 | { |
| 259 | unsigned char channels; |
| 260 | u8 *ptr = buffer; |
| 261 | size_t length; |
| 262 | |
| 263 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
| 264 | |
| 265 | if (size < length) |
| 266 | return -ENOSPC; |
| 267 | |
Damien Lespiau | 3b390f6 | 2013-08-06 20:32:16 +0100 | [diff] [blame] | 268 | memset(buffer, 0, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 269 | |
| 270 | if (frame->channels >= 2) |
| 271 | channels = frame->channels - 1; |
| 272 | else |
| 273 | channels = 0; |
| 274 | |
| 275 | ptr[0] = frame->type; |
| 276 | ptr[1] = frame->version; |
| 277 | ptr[2] = frame->length; |
| 278 | ptr[3] = 0; /* checksum */ |
| 279 | |
| 280 | /* start infoframe payload */ |
| 281 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 282 | |
| 283 | ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); |
| 284 | ptr[1] = ((frame->sample_frequency & 0x7) << 2) | |
| 285 | (frame->sample_size & 0x3); |
| 286 | ptr[2] = frame->coding_type_ext & 0x1f; |
| 287 | ptr[3] = frame->channel_allocation; |
| 288 | ptr[4] = (frame->level_shift_value & 0xf) << 3; |
| 289 | |
| 290 | if (frame->downmix_inhibit) |
| 291 | ptr[4] |= BIT(7); |
| 292 | |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 293 | hdmi_infoframe_set_checksum(buffer, length); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 294 | |
| 295 | return length; |
| 296 | } |
| 297 | EXPORT_SYMBOL(hdmi_audio_infoframe_pack); |
| 298 | |
| 299 | /** |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 300 | * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 301 | * @frame: HDMI vendor infoframe |
| 302 | * |
| 303 | * Returns 0 on success or a negative error code on failure. |
| 304 | */ |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 305 | int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame) |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 306 | { |
| 307 | memset(frame, 0, sizeof(*frame)); |
| 308 | |
| 309 | frame->type = HDMI_INFOFRAME_TYPE_VENDOR; |
| 310 | frame->version = 1; |
| 311 | |
Lespiau, Damien | 6cb3b7f | 2013-08-19 16:59:05 +0100 | [diff] [blame] | 312 | frame->oui = HDMI_IEEE_OUI; |
Lespiau, Damien | af3e95b | 2013-08-19 16:59:01 +0100 | [diff] [blame] | 313 | |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 314 | /* |
| 315 | * 0 is a valid value for s3d_struct, so we use a special "not set" |
| 316 | * value |
| 317 | */ |
| 318 | frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID; |
| 319 | |
| 320 | return 0; |
| 321 | } |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 322 | EXPORT_SYMBOL(hdmi_vendor_infoframe_init); |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 323 | |
| 324 | /** |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 325 | * hdmi_vendor_infoframe_pack() - write a HDMI vendor infoframe to binary buffer |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 326 | * @frame: HDMI infoframe |
| 327 | * @buffer: destination buffer |
| 328 | * @size: size of buffer |
| 329 | * |
| 330 | * Packs the information contained in the @frame structure into a binary |
| 331 | * representation that can be written into the corresponding controller |
| 332 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 333 | * the HDMI 1.4 specification. |
| 334 | * |
| 335 | * Returns the number of bytes packed into the binary buffer or a negative |
| 336 | * error code on failure. |
| 337 | */ |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 338 | ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 339 | void *buffer, size_t size) |
| 340 | { |
| 341 | u8 *ptr = buffer; |
| 342 | size_t length; |
| 343 | |
| 344 | /* empty info frame */ |
| 345 | if (frame->vic == 0 && frame->s3d_struct == HDMI_3D_STRUCTURE_INVALID) |
| 346 | return -EINVAL; |
| 347 | |
| 348 | /* only one of those can be supplied */ |
| 349 | if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) |
| 350 | return -EINVAL; |
| 351 | |
| 352 | /* for side by side (half) we also need to provide 3D_Ext_Data */ |
| 353 | if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) |
| 354 | frame->length = 6; |
| 355 | else |
| 356 | frame->length = 5; |
| 357 | |
| 358 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
| 359 | |
| 360 | if (size < length) |
| 361 | return -ENOSPC; |
| 362 | |
| 363 | memset(buffer, 0, size); |
| 364 | |
| 365 | ptr[0] = frame->type; |
| 366 | ptr[1] = frame->version; |
| 367 | ptr[2] = frame->length; |
| 368 | ptr[3] = 0; /* checksum */ |
| 369 | |
| 370 | /* HDMI OUI */ |
| 371 | ptr[4] = 0x03; |
| 372 | ptr[5] = 0x0c; |
| 373 | ptr[6] = 0x00; |
| 374 | |
| 375 | if (frame->vic) { |
| 376 | ptr[7] = 0x1 << 5; /* video format */ |
| 377 | ptr[8] = frame->vic; |
| 378 | } else { |
| 379 | ptr[7] = 0x2 << 5; /* video format */ |
| 380 | ptr[8] = (frame->s3d_struct & 0xf) << 4; |
| 381 | if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) |
| 382 | ptr[9] = (frame->s3d_ext_data & 0xf) << 4; |
| 383 | } |
| 384 | |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 385 | hdmi_infoframe_set_checksum(buffer, length); |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 386 | |
| 387 | return length; |
| 388 | } |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 389 | EXPORT_SYMBOL(hdmi_vendor_infoframe_pack); |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 390 | |
Lespiau, Damien | af3e95b | 2013-08-19 16:59:01 +0100 | [diff] [blame] | 391 | /* |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 392 | * hdmi_vendor_any_infoframe_pack() - write a vendor infoframe to binary buffer |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 393 | */ |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 394 | static ssize_t |
| 395 | hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame, |
| 396 | void *buffer, size_t size) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 397 | { |
Lespiau, Damien | af3e95b | 2013-08-19 16:59:01 +0100 | [diff] [blame] | 398 | /* we only know about HDMI vendor infoframes */ |
Lespiau, Damien | 6cb3b7f | 2013-08-19 16:59:05 +0100 | [diff] [blame] | 399 | if (frame->any.oui != HDMI_IEEE_OUI) |
Lespiau, Damien | af3e95b | 2013-08-19 16:59:01 +0100 | [diff] [blame] | 400 | return -EINVAL; |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 401 | |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 402 | return hdmi_vendor_infoframe_pack(&frame->hdmi, buffer, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 403 | } |
Damien Lespiau | 72b0989 | 2013-08-06 20:32:14 +0100 | [diff] [blame] | 404 | |
| 405 | /** |
| 406 | * hdmi_infoframe_pack() - write a HDMI infoframe to binary buffer |
| 407 | * @frame: HDMI infoframe |
| 408 | * @buffer: destination buffer |
| 409 | * @size: size of buffer |
| 410 | * |
| 411 | * Packs the information contained in the @frame structure into a binary |
| 412 | * representation that can be written into the corresponding controller |
| 413 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 414 | * the HDMI 1.4 specification. |
| 415 | * |
| 416 | * Returns the number of bytes packed into the binary buffer or a negative |
| 417 | * error code on failure. |
| 418 | */ |
| 419 | ssize_t |
| 420 | hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer, size_t size) |
| 421 | { |
| 422 | ssize_t length; |
| 423 | |
| 424 | switch (frame->any.type) { |
| 425 | case HDMI_INFOFRAME_TYPE_AVI: |
| 426 | length = hdmi_avi_infoframe_pack(&frame->avi, buffer, size); |
| 427 | break; |
| 428 | case HDMI_INFOFRAME_TYPE_SPD: |
| 429 | length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size); |
| 430 | break; |
| 431 | case HDMI_INFOFRAME_TYPE_AUDIO: |
| 432 | length = hdmi_audio_infoframe_pack(&frame->audio, buffer, size); |
| 433 | break; |
| 434 | case HDMI_INFOFRAME_TYPE_VENDOR: |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame] | 435 | length = hdmi_vendor_any_infoframe_pack(&frame->vendor, |
| 436 | buffer, size); |
Damien Lespiau | 72b0989 | 2013-08-06 20:32:14 +0100 | [diff] [blame] | 437 | break; |
| 438 | default: |
| 439 | WARN(1, "Bad infoframe type %d\n", frame->any.type); |
| 440 | length = -EINVAL; |
| 441 | } |
| 442 | |
| 443 | return length; |
| 444 | } |
| 445 | EXPORT_SYMBOL(hdmi_infoframe_pack); |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 446 | |
| 447 | static const char *hdmi_infoframe_type_get_name(enum hdmi_infoframe_type type) |
| 448 | { |
| 449 | if (type < 0x80 || type > 0x9f) |
| 450 | return "Invalid"; |
| 451 | switch (type) { |
| 452 | case HDMI_INFOFRAME_TYPE_VENDOR: |
| 453 | return "Vendor"; |
| 454 | case HDMI_INFOFRAME_TYPE_AVI: |
| 455 | return "Auxiliary Video Information (AVI)"; |
| 456 | case HDMI_INFOFRAME_TYPE_SPD: |
| 457 | return "Source Product Description (SPD)"; |
| 458 | case HDMI_INFOFRAME_TYPE_AUDIO: |
| 459 | return "Audio"; |
| 460 | } |
| 461 | return "Reserved"; |
| 462 | } |
| 463 | |
| 464 | static void hdmi_infoframe_log_header(const char *level, |
| 465 | struct device *dev, |
| 466 | struct hdmi_any_infoframe *frame) |
| 467 | { |
| 468 | hdmi_log("HDMI infoframe: %s, version %u, length %u\n", |
| 469 | hdmi_infoframe_type_get_name(frame->type), |
| 470 | frame->version, frame->length); |
| 471 | } |
| 472 | |
| 473 | static const char *hdmi_colorspace_get_name(enum hdmi_colorspace colorspace) |
| 474 | { |
| 475 | switch (colorspace) { |
| 476 | case HDMI_COLORSPACE_RGB: |
| 477 | return "RGB"; |
| 478 | case HDMI_COLORSPACE_YUV422: |
| 479 | return "YCbCr 4:2:2"; |
| 480 | case HDMI_COLORSPACE_YUV444: |
| 481 | return "YCbCr 4:4:4"; |
| 482 | case HDMI_COLORSPACE_YUV420: |
| 483 | return "YCbCr 4:2:0"; |
| 484 | case HDMI_COLORSPACE_RESERVED4: |
| 485 | return "Reserved (4)"; |
| 486 | case HDMI_COLORSPACE_RESERVED5: |
| 487 | return "Reserved (5)"; |
| 488 | case HDMI_COLORSPACE_RESERVED6: |
| 489 | return "Reserved (6)"; |
| 490 | case HDMI_COLORSPACE_IDO_DEFINED: |
| 491 | return "IDO Defined"; |
| 492 | } |
| 493 | return "Invalid"; |
| 494 | } |
| 495 | |
| 496 | static const char *hdmi_scan_mode_get_name(enum hdmi_scan_mode scan_mode) |
| 497 | { |
| 498 | switch (scan_mode) { |
| 499 | case HDMI_SCAN_MODE_NONE: |
| 500 | return "No Data"; |
| 501 | case HDMI_SCAN_MODE_OVERSCAN: |
| 502 | return "Overscan"; |
| 503 | case HDMI_SCAN_MODE_UNDERSCAN: |
| 504 | return "Underscan"; |
| 505 | case HDMI_SCAN_MODE_RESERVED: |
| 506 | return "Reserved"; |
| 507 | } |
| 508 | return "Invalid"; |
| 509 | } |
| 510 | |
| 511 | static const char *hdmi_colorimetry_get_name(enum hdmi_colorimetry colorimetry) |
| 512 | { |
| 513 | switch (colorimetry) { |
| 514 | case HDMI_COLORIMETRY_NONE: |
| 515 | return "No Data"; |
| 516 | case HDMI_COLORIMETRY_ITU_601: |
| 517 | return "ITU601"; |
| 518 | case HDMI_COLORIMETRY_ITU_709: |
| 519 | return "ITU709"; |
| 520 | case HDMI_COLORIMETRY_EXTENDED: |
| 521 | return "Extended"; |
| 522 | } |
| 523 | return "Invalid"; |
| 524 | } |
| 525 | |
| 526 | static const char * |
| 527 | hdmi_picture_aspect_get_name(enum hdmi_picture_aspect picture_aspect) |
| 528 | { |
| 529 | switch (picture_aspect) { |
| 530 | case HDMI_PICTURE_ASPECT_NONE: |
| 531 | return "No Data"; |
| 532 | case HDMI_PICTURE_ASPECT_4_3: |
| 533 | return "4:3"; |
| 534 | case HDMI_PICTURE_ASPECT_16_9: |
| 535 | return "16:9"; |
| 536 | case HDMI_PICTURE_ASPECT_RESERVED: |
| 537 | return "Reserved"; |
| 538 | } |
| 539 | return "Invalid"; |
| 540 | } |
| 541 | |
| 542 | static const char * |
| 543 | hdmi_active_aspect_get_name(enum hdmi_active_aspect active_aspect) |
| 544 | { |
| 545 | if (active_aspect < 0 || active_aspect > 0xf) |
| 546 | return "Invalid"; |
| 547 | |
| 548 | switch (active_aspect) { |
| 549 | case HDMI_ACTIVE_ASPECT_16_9_TOP: |
| 550 | return "16:9 Top"; |
| 551 | case HDMI_ACTIVE_ASPECT_14_9_TOP: |
| 552 | return "14:9 Top"; |
| 553 | case HDMI_ACTIVE_ASPECT_16_9_CENTER: |
| 554 | return "16:9 Center"; |
| 555 | case HDMI_ACTIVE_ASPECT_PICTURE: |
| 556 | return "Same as Picture"; |
| 557 | case HDMI_ACTIVE_ASPECT_4_3: |
| 558 | return "4:3"; |
| 559 | case HDMI_ACTIVE_ASPECT_16_9: |
| 560 | return "16:9"; |
| 561 | case HDMI_ACTIVE_ASPECT_14_9: |
| 562 | return "14:9"; |
| 563 | case HDMI_ACTIVE_ASPECT_4_3_SP_14_9: |
| 564 | return "4:3 SP 14:9"; |
| 565 | case HDMI_ACTIVE_ASPECT_16_9_SP_14_9: |
| 566 | return "16:9 SP 14:9"; |
| 567 | case HDMI_ACTIVE_ASPECT_16_9_SP_4_3: |
| 568 | return "16:9 SP 4:3"; |
| 569 | } |
| 570 | return "Reserved"; |
| 571 | } |
| 572 | |
| 573 | static const char * |
| 574 | hdmi_extended_colorimetry_get_name(enum hdmi_extended_colorimetry ext_col) |
| 575 | { |
| 576 | switch (ext_col) { |
| 577 | case HDMI_EXTENDED_COLORIMETRY_XV_YCC_601: |
| 578 | return "xvYCC 601"; |
| 579 | case HDMI_EXTENDED_COLORIMETRY_XV_YCC_709: |
| 580 | return "xvYCC 709"; |
| 581 | case HDMI_EXTENDED_COLORIMETRY_S_YCC_601: |
| 582 | return "sYCC 601"; |
| 583 | case HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601: |
| 584 | return "Adobe YCC 601"; |
| 585 | case HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB: |
| 586 | return "Adobe RGB"; |
| 587 | case HDMI_EXTENDED_COLORIMETRY_BT2020_CONST_LUM: |
| 588 | return "BT.2020 Constant Luminance"; |
| 589 | case HDMI_EXTENDED_COLORIMETRY_BT2020: |
| 590 | return "BT.2020"; |
| 591 | case HDMI_EXTENDED_COLORIMETRY_RESERVED: |
| 592 | return "Reserved"; |
| 593 | } |
| 594 | return "Invalid"; |
| 595 | } |
| 596 | |
| 597 | static const char * |
| 598 | hdmi_quantization_range_get_name(enum hdmi_quantization_range qrange) |
| 599 | { |
| 600 | switch (qrange) { |
| 601 | case HDMI_QUANTIZATION_RANGE_DEFAULT: |
| 602 | return "Default"; |
| 603 | case HDMI_QUANTIZATION_RANGE_LIMITED: |
| 604 | return "Limited"; |
| 605 | case HDMI_QUANTIZATION_RANGE_FULL: |
| 606 | return "Full"; |
| 607 | case HDMI_QUANTIZATION_RANGE_RESERVED: |
| 608 | return "Reserved"; |
| 609 | } |
| 610 | return "Invalid"; |
| 611 | } |
| 612 | |
| 613 | static const char *hdmi_nups_get_name(enum hdmi_nups nups) |
| 614 | { |
| 615 | switch (nups) { |
| 616 | case HDMI_NUPS_UNKNOWN: |
| 617 | return "Unknown Non-uniform Scaling"; |
| 618 | case HDMI_NUPS_HORIZONTAL: |
| 619 | return "Horizontally Scaled"; |
| 620 | case HDMI_NUPS_VERTICAL: |
| 621 | return "Vertically Scaled"; |
| 622 | case HDMI_NUPS_BOTH: |
| 623 | return "Horizontally and Vertically Scaled"; |
| 624 | } |
| 625 | return "Invalid"; |
| 626 | } |
| 627 | |
| 628 | static const char * |
| 629 | hdmi_ycc_quantization_range_get_name(enum hdmi_ycc_quantization_range qrange) |
| 630 | { |
| 631 | switch (qrange) { |
| 632 | case HDMI_YCC_QUANTIZATION_RANGE_LIMITED: |
| 633 | return "Limited"; |
| 634 | case HDMI_YCC_QUANTIZATION_RANGE_FULL: |
| 635 | return "Full"; |
| 636 | } |
| 637 | return "Invalid"; |
| 638 | } |
| 639 | |
| 640 | static const char * |
| 641 | hdmi_content_type_get_name(enum hdmi_content_type content_type) |
| 642 | { |
| 643 | switch (content_type) { |
| 644 | case HDMI_CONTENT_TYPE_GRAPHICS: |
| 645 | return "Graphics"; |
| 646 | case HDMI_CONTENT_TYPE_PHOTO: |
| 647 | return "Photo"; |
| 648 | case HDMI_CONTENT_TYPE_CINEMA: |
| 649 | return "Cinema"; |
| 650 | case HDMI_CONTENT_TYPE_GAME: |
| 651 | return "Game"; |
| 652 | } |
| 653 | return "Invalid"; |
| 654 | } |
| 655 | |
| 656 | /** |
| 657 | * hdmi_avi_infoframe_log() - log info of HDMI AVI infoframe |
| 658 | * @level: logging level |
| 659 | * @dev: device |
| 660 | * @frame: HDMI AVI infoframe |
| 661 | */ |
| 662 | static void hdmi_avi_infoframe_log(const char *level, |
| 663 | struct device *dev, |
| 664 | struct hdmi_avi_infoframe *frame) |
| 665 | { |
| 666 | hdmi_infoframe_log_header(level, dev, |
| 667 | (struct hdmi_any_infoframe *)frame); |
| 668 | |
| 669 | hdmi_log(" colorspace: %s\n", |
| 670 | hdmi_colorspace_get_name(frame->colorspace)); |
| 671 | hdmi_log(" scan mode: %s\n", |
| 672 | hdmi_scan_mode_get_name(frame->scan_mode)); |
| 673 | hdmi_log(" colorimetry: %s\n", |
| 674 | hdmi_colorimetry_get_name(frame->colorimetry)); |
| 675 | hdmi_log(" picture aspect: %s\n", |
| 676 | hdmi_picture_aspect_get_name(frame->picture_aspect)); |
| 677 | hdmi_log(" active aspect: %s\n", |
| 678 | hdmi_active_aspect_get_name(frame->active_aspect)); |
| 679 | hdmi_log(" itc: %s\n", frame->itc ? "IT Content" : "No Data"); |
| 680 | hdmi_log(" extended colorimetry: %s\n", |
| 681 | hdmi_extended_colorimetry_get_name(frame->extended_colorimetry)); |
| 682 | hdmi_log(" quantization range: %s\n", |
| 683 | hdmi_quantization_range_get_name(frame->quantization_range)); |
| 684 | hdmi_log(" nups: %s\n", hdmi_nups_get_name(frame->nups)); |
| 685 | hdmi_log(" video code: %u\n", frame->video_code); |
| 686 | hdmi_log(" ycc quantization range: %s\n", |
| 687 | hdmi_ycc_quantization_range_get_name(frame->ycc_quantization_range)); |
| 688 | hdmi_log(" hdmi content type: %s\n", |
| 689 | hdmi_content_type_get_name(frame->content_type)); |
| 690 | hdmi_log(" pixel repeat: %u\n", frame->pixel_repeat); |
| 691 | hdmi_log(" bar top %u, bottom %u, left %u, right %u\n", |
| 692 | frame->top_bar, frame->bottom_bar, |
| 693 | frame->left_bar, frame->right_bar); |
| 694 | } |
| 695 | |
| 696 | static const char *hdmi_spd_sdi_get_name(enum hdmi_spd_sdi sdi) |
| 697 | { |
| 698 | if (sdi < 0 || sdi > 0xff) |
| 699 | return "Invalid"; |
| 700 | switch (sdi) { |
| 701 | case HDMI_SPD_SDI_UNKNOWN: |
| 702 | return "Unknown"; |
| 703 | case HDMI_SPD_SDI_DSTB: |
| 704 | return "Digital STB"; |
| 705 | case HDMI_SPD_SDI_DVDP: |
| 706 | return "DVD Player"; |
| 707 | case HDMI_SPD_SDI_DVHS: |
| 708 | return "D-VHS"; |
| 709 | case HDMI_SPD_SDI_HDDVR: |
| 710 | return "HDD Videorecorder"; |
| 711 | case HDMI_SPD_SDI_DVC: |
| 712 | return "DVC"; |
| 713 | case HDMI_SPD_SDI_DSC: |
| 714 | return "DSC"; |
| 715 | case HDMI_SPD_SDI_VCD: |
| 716 | return "Video CD"; |
| 717 | case HDMI_SPD_SDI_GAME: |
| 718 | return "Game"; |
| 719 | case HDMI_SPD_SDI_PC: |
| 720 | return "PC General"; |
| 721 | case HDMI_SPD_SDI_BD: |
| 722 | return "Blu-Ray Disc (BD)"; |
| 723 | case HDMI_SPD_SDI_SACD: |
| 724 | return "Super Audio CD"; |
| 725 | case HDMI_SPD_SDI_HDDVD: |
| 726 | return "HD DVD"; |
| 727 | case HDMI_SPD_SDI_PMP: |
| 728 | return "PMP"; |
| 729 | } |
| 730 | return "Reserved"; |
| 731 | } |
| 732 | |
| 733 | /** |
| 734 | * hdmi_spd_infoframe_log() - log info of HDMI SPD infoframe |
| 735 | * @level: logging level |
| 736 | * @dev: device |
| 737 | * @frame: HDMI SPD infoframe |
| 738 | */ |
| 739 | static void hdmi_spd_infoframe_log(const char *level, |
| 740 | struct device *dev, |
| 741 | struct hdmi_spd_infoframe *frame) |
| 742 | { |
| 743 | u8 buf[17]; |
| 744 | |
| 745 | hdmi_infoframe_log_header(level, dev, |
| 746 | (struct hdmi_any_infoframe *)frame); |
| 747 | |
| 748 | memset(buf, 0, sizeof(buf)); |
| 749 | |
| 750 | strncpy(buf, frame->vendor, 8); |
| 751 | hdmi_log(" vendor: %s\n", buf); |
| 752 | strncpy(buf, frame->product, 16); |
| 753 | hdmi_log(" product: %s\n", buf); |
| 754 | hdmi_log(" source device information: %s (0x%x)\n", |
| 755 | hdmi_spd_sdi_get_name(frame->sdi), frame->sdi); |
| 756 | } |
| 757 | |
| 758 | static const char * |
| 759 | hdmi_audio_coding_type_get_name(enum hdmi_audio_coding_type coding_type) |
| 760 | { |
| 761 | switch (coding_type) { |
| 762 | case HDMI_AUDIO_CODING_TYPE_STREAM: |
| 763 | return "Refer to Stream Header"; |
| 764 | case HDMI_AUDIO_CODING_TYPE_PCM: |
| 765 | return "PCM"; |
| 766 | case HDMI_AUDIO_CODING_TYPE_AC3: |
| 767 | return "AC-3"; |
| 768 | case HDMI_AUDIO_CODING_TYPE_MPEG1: |
| 769 | return "MPEG1"; |
| 770 | case HDMI_AUDIO_CODING_TYPE_MP3: |
| 771 | return "MP3"; |
| 772 | case HDMI_AUDIO_CODING_TYPE_MPEG2: |
| 773 | return "MPEG2"; |
| 774 | case HDMI_AUDIO_CODING_TYPE_AAC_LC: |
| 775 | return "AAC"; |
| 776 | case HDMI_AUDIO_CODING_TYPE_DTS: |
| 777 | return "DTS"; |
| 778 | case HDMI_AUDIO_CODING_TYPE_ATRAC: |
| 779 | return "ATRAC"; |
| 780 | case HDMI_AUDIO_CODING_TYPE_DSD: |
| 781 | return "One Bit Audio"; |
| 782 | case HDMI_AUDIO_CODING_TYPE_EAC3: |
| 783 | return "Dolby Digital +"; |
| 784 | case HDMI_AUDIO_CODING_TYPE_DTS_HD: |
| 785 | return "DTS-HD"; |
| 786 | case HDMI_AUDIO_CODING_TYPE_MLP: |
| 787 | return "MAT (MLP)"; |
| 788 | case HDMI_AUDIO_CODING_TYPE_DST: |
| 789 | return "DST"; |
| 790 | case HDMI_AUDIO_CODING_TYPE_WMA_PRO: |
| 791 | return "WMA PRO"; |
| 792 | case HDMI_AUDIO_CODING_TYPE_CXT: |
| 793 | return "Refer to CXT"; |
| 794 | } |
| 795 | return "Invalid"; |
| 796 | } |
| 797 | |
| 798 | static const char * |
| 799 | hdmi_audio_sample_size_get_name(enum hdmi_audio_sample_size sample_size) |
| 800 | { |
| 801 | switch (sample_size) { |
| 802 | case HDMI_AUDIO_SAMPLE_SIZE_STREAM: |
| 803 | return "Refer to Stream Header"; |
| 804 | case HDMI_AUDIO_SAMPLE_SIZE_16: |
| 805 | return "16 bit"; |
| 806 | case HDMI_AUDIO_SAMPLE_SIZE_20: |
| 807 | return "20 bit"; |
| 808 | case HDMI_AUDIO_SAMPLE_SIZE_24: |
| 809 | return "24 bit"; |
| 810 | } |
| 811 | return "Invalid"; |
| 812 | } |
| 813 | |
| 814 | static const char * |
| 815 | hdmi_audio_sample_frequency_get_name(enum hdmi_audio_sample_frequency freq) |
| 816 | { |
| 817 | switch (freq) { |
| 818 | case HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM: |
| 819 | return "Refer to Stream Header"; |
| 820 | case HDMI_AUDIO_SAMPLE_FREQUENCY_32000: |
| 821 | return "32 kHz"; |
| 822 | case HDMI_AUDIO_SAMPLE_FREQUENCY_44100: |
| 823 | return "44.1 kHz (CD)"; |
| 824 | case HDMI_AUDIO_SAMPLE_FREQUENCY_48000: |
| 825 | return "48 kHz"; |
| 826 | case HDMI_AUDIO_SAMPLE_FREQUENCY_88200: |
| 827 | return "88.2 kHz"; |
| 828 | case HDMI_AUDIO_SAMPLE_FREQUENCY_96000: |
| 829 | return "96 kHz"; |
| 830 | case HDMI_AUDIO_SAMPLE_FREQUENCY_176400: |
| 831 | return "176.4 kHz"; |
| 832 | case HDMI_AUDIO_SAMPLE_FREQUENCY_192000: |
| 833 | return "192 kHz"; |
| 834 | } |
| 835 | return "Invalid"; |
| 836 | } |
| 837 | |
| 838 | static const char * |
| 839 | hdmi_audio_coding_type_ext_get_name(enum hdmi_audio_coding_type_ext ctx) |
| 840 | { |
| 841 | if (ctx < 0 || ctx > 0x1f) |
| 842 | return "Invalid"; |
| 843 | |
| 844 | switch (ctx) { |
Hans Verkuil | dc18905 | 2014-12-19 09:14:22 -0300 | [diff] [blame^] | 845 | case HDMI_AUDIO_CODING_TYPE_EXT_CT: |
Martin Bugge | 2c676f3 | 2014-12-19 09:14:21 -0300 | [diff] [blame] | 846 | return "Refer to CT"; |
| 847 | case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC: |
| 848 | return "HE AAC"; |
| 849 | case HDMI_AUDIO_CODING_TYPE_EXT_HE_AAC_V2: |
| 850 | return "HE AAC v2"; |
| 851 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG_SURROUND: |
| 852 | return "MPEG SURROUND"; |
| 853 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC: |
| 854 | return "MPEG-4 HE AAC"; |
| 855 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_V2: |
| 856 | return "MPEG-4 HE AAC v2"; |
| 857 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC: |
| 858 | return "MPEG-4 AAC LC"; |
| 859 | case HDMI_AUDIO_CODING_TYPE_EXT_DRA: |
| 860 | return "DRA"; |
| 861 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_HE_AAC_SURROUND: |
| 862 | return "MPEG-4 HE AAC + MPEG Surround"; |
| 863 | case HDMI_AUDIO_CODING_TYPE_EXT_MPEG4_AAC_LC_SURROUND: |
| 864 | return "MPEG-4 AAC LC + MPEG Surround"; |
| 865 | } |
| 866 | return "Reserved"; |
| 867 | } |
| 868 | |
| 869 | /** |
| 870 | * hdmi_audio_infoframe_log() - log info of HDMI AUDIO infoframe |
| 871 | * @level: logging level |
| 872 | * @dev: device |
| 873 | * @frame: HDMI AUDIO infoframe |
| 874 | */ |
| 875 | static void hdmi_audio_infoframe_log(const char *level, |
| 876 | struct device *dev, |
| 877 | struct hdmi_audio_infoframe *frame) |
| 878 | { |
| 879 | hdmi_infoframe_log_header(level, dev, |
| 880 | (struct hdmi_any_infoframe *)frame); |
| 881 | |
| 882 | if (frame->channels) |
| 883 | hdmi_log(" channels: %u\n", frame->channels - 1); |
| 884 | else |
| 885 | hdmi_log(" channels: Refer to stream header\n"); |
| 886 | hdmi_log(" coding type: %s\n", |
| 887 | hdmi_audio_coding_type_get_name(frame->coding_type)); |
| 888 | hdmi_log(" sample size: %s\n", |
| 889 | hdmi_audio_sample_size_get_name(frame->sample_size)); |
| 890 | hdmi_log(" sample frequency: %s\n", |
| 891 | hdmi_audio_sample_frequency_get_name(frame->sample_frequency)); |
| 892 | hdmi_log(" coding type ext: %s\n", |
| 893 | hdmi_audio_coding_type_ext_get_name(frame->coding_type_ext)); |
| 894 | hdmi_log(" channel allocation: 0x%x\n", |
| 895 | frame->channel_allocation); |
| 896 | hdmi_log(" level shift value: %u dB\n", |
| 897 | frame->level_shift_value); |
| 898 | hdmi_log(" downmix inhibit: %s\n", |
| 899 | frame->downmix_inhibit ? "Yes" : "No"); |
| 900 | } |
| 901 | |
| 902 | static const char * |
| 903 | hdmi_3d_structure_get_name(enum hdmi_3d_structure s3d_struct) |
| 904 | { |
| 905 | if (s3d_struct < 0 || s3d_struct > 0xf) |
| 906 | return "Invalid"; |
| 907 | |
| 908 | switch (s3d_struct) { |
| 909 | case HDMI_3D_STRUCTURE_FRAME_PACKING: |
| 910 | return "Frame Packing"; |
| 911 | case HDMI_3D_STRUCTURE_FIELD_ALTERNATIVE: |
| 912 | return "Field Alternative"; |
| 913 | case HDMI_3D_STRUCTURE_LINE_ALTERNATIVE: |
| 914 | return "Line Alternative"; |
| 915 | case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_FULL: |
| 916 | return "Side-by-side (Full)"; |
| 917 | case HDMI_3D_STRUCTURE_L_DEPTH: |
| 918 | return "L + Depth"; |
| 919 | case HDMI_3D_STRUCTURE_L_DEPTH_GFX_GFX_DEPTH: |
| 920 | return "L + Depth + Graphics + Graphics-depth"; |
| 921 | case HDMI_3D_STRUCTURE_TOP_AND_BOTTOM: |
| 922 | return "Top-and-Bottom"; |
| 923 | case HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF: |
| 924 | return "Side-by-side (Half)"; |
| 925 | default: |
| 926 | break; |
| 927 | } |
| 928 | return "Reserved"; |
| 929 | } |
| 930 | |
| 931 | /** |
| 932 | * hdmi_vendor_infoframe_log() - log info of HDMI VENDOR infoframe |
| 933 | * @level: logging level |
| 934 | * @dev: device |
| 935 | * @frame: HDMI VENDOR infoframe |
| 936 | */ |
| 937 | static void |
| 938 | hdmi_vendor_any_infoframe_log(const char *level, |
| 939 | struct device *dev, |
| 940 | union hdmi_vendor_any_infoframe *frame) |
| 941 | { |
| 942 | struct hdmi_vendor_infoframe *hvf = &frame->hdmi; |
| 943 | |
| 944 | hdmi_infoframe_log_header(level, dev, |
| 945 | (struct hdmi_any_infoframe *)frame); |
| 946 | |
| 947 | if (frame->any.oui != HDMI_IEEE_OUI) { |
| 948 | hdmi_log(" not a HDMI vendor infoframe\n"); |
| 949 | return; |
| 950 | } |
| 951 | if (hvf->vic == 0 && hvf->s3d_struct == HDMI_3D_STRUCTURE_INVALID) { |
| 952 | hdmi_log(" empty frame\n"); |
| 953 | return; |
| 954 | } |
| 955 | |
| 956 | if (hvf->vic) |
| 957 | hdmi_log(" HDMI VIC: %u\n", hvf->vic); |
| 958 | if (hvf->s3d_struct != HDMI_3D_STRUCTURE_INVALID) { |
| 959 | hdmi_log(" 3D structure: %s\n", |
| 960 | hdmi_3d_structure_get_name(hvf->s3d_struct)); |
| 961 | if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) |
| 962 | hdmi_log(" 3D extension data: %d\n", |
| 963 | hvf->s3d_ext_data); |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | /** |
| 968 | * hdmi_infoframe_log() - log info of HDMI infoframe |
| 969 | * @level: logging level |
| 970 | * @dev: device |
| 971 | * @frame: HDMI infoframe |
| 972 | */ |
| 973 | void hdmi_infoframe_log(const char *level, |
| 974 | struct device *dev, |
| 975 | union hdmi_infoframe *frame) |
| 976 | { |
| 977 | switch (frame->any.type) { |
| 978 | case HDMI_INFOFRAME_TYPE_AVI: |
| 979 | hdmi_avi_infoframe_log(level, dev, &frame->avi); |
| 980 | break; |
| 981 | case HDMI_INFOFRAME_TYPE_SPD: |
| 982 | hdmi_spd_infoframe_log(level, dev, &frame->spd); |
| 983 | break; |
| 984 | case HDMI_INFOFRAME_TYPE_AUDIO: |
| 985 | hdmi_audio_infoframe_log(level, dev, &frame->audio); |
| 986 | break; |
| 987 | case HDMI_INFOFRAME_TYPE_VENDOR: |
| 988 | hdmi_vendor_any_infoframe_log(level, dev, &frame->vendor); |
| 989 | break; |
| 990 | } |
| 991 | } |
| 992 | EXPORT_SYMBOL(hdmi_infoframe_log); |
| 993 | |
| 994 | /** |
| 995 | * hdmi_avi_infoframe_unpack() - unpack binary buffer to a HDMI AVI infoframe |
| 996 | * @buffer: source buffer |
| 997 | * @frame: HDMI AVI infoframe |
| 998 | * |
| 999 | * Unpacks the information contained in binary @buffer into a structured |
| 1000 | * @frame of the HDMI Auxiliary Video (AVI) information frame. |
| 1001 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
| 1002 | * specification. |
| 1003 | * |
| 1004 | * Returns 0 on success or a negative error code on failure. |
| 1005 | */ |
| 1006 | static int hdmi_avi_infoframe_unpack(struct hdmi_avi_infoframe *frame, |
| 1007 | void *buffer) |
| 1008 | { |
| 1009 | u8 *ptr = buffer; |
| 1010 | int ret; |
| 1011 | |
| 1012 | if (ptr[0] != HDMI_INFOFRAME_TYPE_AVI || |
| 1013 | ptr[1] != 2 || |
| 1014 | ptr[2] != HDMI_AVI_INFOFRAME_SIZE) |
| 1015 | return -EINVAL; |
| 1016 | |
| 1017 | if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AVI)) != 0) |
| 1018 | return -EINVAL; |
| 1019 | |
| 1020 | ret = hdmi_avi_infoframe_init(frame); |
| 1021 | if (ret) |
| 1022 | return ret; |
| 1023 | |
| 1024 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 1025 | |
| 1026 | frame->colorspace = (ptr[0] >> 5) & 0x3; |
| 1027 | if (ptr[0] & 0x10) |
| 1028 | frame->active_aspect = ptr[1] & 0xf; |
| 1029 | if (ptr[0] & 0x8) { |
| 1030 | frame->top_bar = (ptr[5] << 8) + ptr[6]; |
| 1031 | frame->bottom_bar = (ptr[7] << 8) + ptr[8]; |
| 1032 | } |
| 1033 | if (ptr[0] & 0x4) { |
| 1034 | frame->left_bar = (ptr[9] << 8) + ptr[10]; |
| 1035 | frame->right_bar = (ptr[11] << 8) + ptr[12]; |
| 1036 | } |
| 1037 | frame->scan_mode = ptr[0] & 0x3; |
| 1038 | |
| 1039 | frame->colorimetry = (ptr[1] >> 6) & 0x3; |
| 1040 | frame->picture_aspect = (ptr[1] >> 4) & 0x3; |
| 1041 | frame->active_aspect = ptr[1] & 0xf; |
| 1042 | |
| 1043 | frame->itc = ptr[2] & 0x80 ? true : false; |
| 1044 | frame->extended_colorimetry = (ptr[2] >> 4) & 0x7; |
| 1045 | frame->quantization_range = (ptr[2] >> 2) & 0x3; |
| 1046 | frame->nups = ptr[2] & 0x3; |
| 1047 | |
| 1048 | frame->video_code = ptr[3] & 0x7f; |
| 1049 | frame->ycc_quantization_range = (ptr[4] >> 6) & 0x3; |
| 1050 | frame->content_type = (ptr[4] >> 4) & 0x3; |
| 1051 | |
| 1052 | frame->pixel_repeat = ptr[4] & 0xf; |
| 1053 | |
| 1054 | return 0; |
| 1055 | } |
| 1056 | |
| 1057 | /** |
| 1058 | * hdmi_spd_infoframe_unpack() - unpack binary buffer to a HDMI SPD infoframe |
| 1059 | * @buffer: source buffer |
| 1060 | * @frame: HDMI SPD infoframe |
| 1061 | * |
| 1062 | * Unpacks the information contained in binary @buffer into a structured |
| 1063 | * @frame of the HDMI Source Product Description (SPD) information frame. |
| 1064 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
| 1065 | * specification. |
| 1066 | * |
| 1067 | * Returns 0 on success or a negative error code on failure. |
| 1068 | */ |
| 1069 | static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame, |
| 1070 | void *buffer) |
| 1071 | { |
| 1072 | u8 *ptr = buffer; |
| 1073 | int ret; |
| 1074 | |
| 1075 | if (ptr[0] != HDMI_INFOFRAME_TYPE_SPD || |
| 1076 | ptr[1] != 1 || |
| 1077 | ptr[2] != HDMI_SPD_INFOFRAME_SIZE) { |
| 1078 | return -EINVAL; |
| 1079 | } |
| 1080 | |
| 1081 | if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(SPD)) != 0) |
| 1082 | return -EINVAL; |
| 1083 | |
| 1084 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 1085 | |
| 1086 | ret = hdmi_spd_infoframe_init(frame, ptr, ptr + 8); |
| 1087 | if (ret) |
| 1088 | return ret; |
| 1089 | |
| 1090 | frame->sdi = ptr[24]; |
| 1091 | |
| 1092 | return 0; |
| 1093 | } |
| 1094 | |
| 1095 | /** |
| 1096 | * hdmi_audio_infoframe_unpack() - unpack binary buffer to a HDMI AUDIO infoframe |
| 1097 | * @buffer: source buffer |
| 1098 | * @frame: HDMI Audio infoframe |
| 1099 | * |
| 1100 | * Unpacks the information contained in binary @buffer into a structured |
| 1101 | * @frame of the HDMI Audio information frame. |
| 1102 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
| 1103 | * specification. |
| 1104 | * |
| 1105 | * Returns 0 on success or a negative error code on failure. |
| 1106 | */ |
| 1107 | static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame, |
| 1108 | void *buffer) |
| 1109 | { |
| 1110 | u8 *ptr = buffer; |
| 1111 | int ret; |
| 1112 | |
| 1113 | if (ptr[0] != HDMI_INFOFRAME_TYPE_AUDIO || |
| 1114 | ptr[1] != 1 || |
| 1115 | ptr[2] != HDMI_AUDIO_INFOFRAME_SIZE) { |
| 1116 | return -EINVAL; |
| 1117 | } |
| 1118 | |
| 1119 | if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AUDIO)) != 0) |
| 1120 | return -EINVAL; |
| 1121 | |
| 1122 | ret = hdmi_audio_infoframe_init(frame); |
| 1123 | if (ret) |
| 1124 | return ret; |
| 1125 | |
| 1126 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 1127 | |
| 1128 | frame->channels = ptr[0] & 0x7; |
| 1129 | frame->coding_type = (ptr[0] >> 4) & 0xf; |
| 1130 | frame->sample_size = ptr[1] & 0x3; |
| 1131 | frame->sample_frequency = (ptr[1] >> 2) & 0x7; |
| 1132 | frame->coding_type_ext = ptr[2] & 0x1f; |
| 1133 | frame->channel_allocation = ptr[3]; |
| 1134 | frame->level_shift_value = (ptr[4] >> 3) & 0xf; |
| 1135 | frame->downmix_inhibit = ptr[4] & 0x80 ? true : false; |
| 1136 | |
| 1137 | return 0; |
| 1138 | } |
| 1139 | |
| 1140 | /** |
| 1141 | * hdmi_vendor_infoframe_unpack() - unpack binary buffer to a HDMI vendor infoframe |
| 1142 | * @buffer: source buffer |
| 1143 | * @frame: HDMI Vendor infoframe |
| 1144 | * |
| 1145 | * Unpacks the information contained in binary @buffer into a structured |
| 1146 | * @frame of the HDMI Vendor information frame. |
| 1147 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
| 1148 | * specification. |
| 1149 | * |
| 1150 | * Returns 0 on success or a negative error code on failure. |
| 1151 | */ |
| 1152 | static int |
| 1153 | hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame, |
| 1154 | void *buffer) |
| 1155 | { |
| 1156 | u8 *ptr = buffer; |
| 1157 | size_t length; |
| 1158 | int ret; |
| 1159 | u8 hdmi_video_format; |
| 1160 | struct hdmi_vendor_infoframe *hvf = &frame->hdmi; |
| 1161 | |
| 1162 | if (ptr[0] != HDMI_INFOFRAME_TYPE_VENDOR || |
| 1163 | ptr[1] != 1 || |
| 1164 | (ptr[2] != 5 && ptr[2] != 6)) |
| 1165 | return -EINVAL; |
| 1166 | |
| 1167 | length = ptr[2]; |
| 1168 | |
| 1169 | if (hdmi_infoframe_checksum(buffer, |
| 1170 | HDMI_INFOFRAME_HEADER_SIZE + length) != 0) |
| 1171 | return -EINVAL; |
| 1172 | |
| 1173 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 1174 | |
| 1175 | /* HDMI OUI */ |
| 1176 | if ((ptr[0] != 0x03) || |
| 1177 | (ptr[1] != 0x0c) || |
| 1178 | (ptr[2] != 0x00)) |
| 1179 | return -EINVAL; |
| 1180 | |
| 1181 | hdmi_video_format = ptr[3] >> 5; |
| 1182 | |
| 1183 | if (hdmi_video_format > 0x2) |
| 1184 | return -EINVAL; |
| 1185 | |
| 1186 | ret = hdmi_vendor_infoframe_init(hvf); |
| 1187 | if (ret) |
| 1188 | return ret; |
| 1189 | |
| 1190 | hvf->length = length; |
| 1191 | |
| 1192 | if (hdmi_video_format == 0x1) { |
| 1193 | hvf->vic = ptr[4]; |
| 1194 | } else if (hdmi_video_format == 0x2) { |
| 1195 | hvf->s3d_struct = ptr[4] >> 4; |
| 1196 | if (hvf->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) { |
| 1197 | if (length == 6) |
| 1198 | hvf->s3d_ext_data = ptr[5] >> 4; |
| 1199 | else |
| 1200 | return -EINVAL; |
| 1201 | } |
| 1202 | } |
| 1203 | |
| 1204 | return 0; |
| 1205 | } |
| 1206 | |
| 1207 | /** |
| 1208 | * hdmi_infoframe_unpack() - unpack binary buffer to a HDMI infoframe |
| 1209 | * @buffer: source buffer |
| 1210 | * @frame: HDMI infoframe |
| 1211 | * |
| 1212 | * Unpacks the information contained in binary buffer @buffer into a structured |
| 1213 | * @frame of a HDMI infoframe. |
| 1214 | * Also verifies the checksum as required by section 5.3.5 of the HDMI 1.4 |
| 1215 | * specification. |
| 1216 | * |
| 1217 | * Returns 0 on success or a negative error code on failure. |
| 1218 | */ |
| 1219 | int hdmi_infoframe_unpack(union hdmi_infoframe *frame, void *buffer) |
| 1220 | { |
| 1221 | int ret; |
| 1222 | u8 *ptr = buffer; |
| 1223 | |
| 1224 | switch (ptr[0]) { |
| 1225 | case HDMI_INFOFRAME_TYPE_AVI: |
| 1226 | ret = hdmi_avi_infoframe_unpack(&frame->avi, buffer); |
| 1227 | break; |
| 1228 | case HDMI_INFOFRAME_TYPE_SPD: |
| 1229 | ret = hdmi_spd_infoframe_unpack(&frame->spd, buffer); |
| 1230 | break; |
| 1231 | case HDMI_INFOFRAME_TYPE_AUDIO: |
| 1232 | ret = hdmi_audio_infoframe_unpack(&frame->audio, buffer); |
| 1233 | break; |
| 1234 | case HDMI_INFOFRAME_TYPE_VENDOR: |
| 1235 | ret = hdmi_vendor_any_infoframe_unpack(&frame->vendor, buffer); |
| 1236 | break; |
| 1237 | default: |
| 1238 | ret = -EINVAL; |
| 1239 | break; |
| 1240 | } |
| 1241 | |
| 1242 | return ret; |
| 1243 | } |
| 1244 | EXPORT_SYMBOL(hdmi_infoframe_unpack); |