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> |
| 30 | |
| 31 | static void hdmi_infoframe_checksum(void *buffer, size_t size) |
| 32 | { |
| 33 | u8 *ptr = buffer; |
| 34 | u8 csum = 0; |
| 35 | size_t i; |
| 36 | |
| 37 | /* compute checksum */ |
| 38 | for (i = 0; i < size; i++) |
| 39 | csum += ptr[i]; |
| 40 | |
| 41 | ptr[3] = 256 - csum; |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * hdmi_avi_infoframe_init() - initialize an HDMI AVI infoframe |
| 46 | * @frame: HDMI AVI infoframe |
| 47 | * |
| 48 | * Returns 0 on success or a negative error code on failure. |
| 49 | */ |
| 50 | int hdmi_avi_infoframe_init(struct hdmi_avi_infoframe *frame) |
| 51 | { |
| 52 | memset(frame, 0, sizeof(*frame)); |
| 53 | |
| 54 | frame->type = HDMI_INFOFRAME_TYPE_AVI; |
| 55 | frame->version = 2; |
Damien Lespiau | 3c6b054 | 2013-08-06 20:32:13 +0100 | [diff] [blame] | 56 | frame->length = HDMI_AVI_INFOFRAME_SIZE; |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 57 | |
| 58 | return 0; |
| 59 | } |
| 60 | EXPORT_SYMBOL(hdmi_avi_infoframe_init); |
| 61 | |
| 62 | /** |
| 63 | * hdmi_avi_infoframe_pack() - write HDMI AVI infoframe to binary buffer |
| 64 | * @frame: HDMI AVI infoframe |
| 65 | * @buffer: destination buffer |
| 66 | * @size: size of buffer |
| 67 | * |
| 68 | * Packs the information contained in the @frame structure into a binary |
| 69 | * representation that can be written into the corresponding controller |
| 70 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 71 | * the HDMI 1.4 specification. |
| 72 | * |
| 73 | * Returns the number of bytes packed into the binary buffer or a negative |
| 74 | * error code on failure. |
| 75 | */ |
| 76 | ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, |
| 77 | size_t size) |
| 78 | { |
| 79 | u8 *ptr = buffer; |
| 80 | size_t length; |
| 81 | |
| 82 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
| 83 | |
| 84 | if (size < length) |
| 85 | return -ENOSPC; |
| 86 | |
Damien Lespiau | 3b390f6 | 2013-08-06 20:32:16 +0100 | [diff] [blame] | 87 | memset(buffer, 0, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 88 | |
| 89 | ptr[0] = frame->type; |
| 90 | ptr[1] = frame->version; |
| 91 | ptr[2] = frame->length; |
| 92 | ptr[3] = 0; /* checksum */ |
| 93 | |
| 94 | /* start infoframe payload */ |
| 95 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 96 | |
| 97 | ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3); |
| 98 | |
Lespiau, Damien | a5ad3dc | 2013-08-19 16:58:56 +0100 | [diff] [blame] | 99 | /* |
| 100 | * Data byte 1, bit 4 has to be set if we provide the active format |
| 101 | * aspect ratio |
| 102 | */ |
| 103 | if (frame->active_aspect & 0xf) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 104 | ptr[0] |= BIT(4); |
| 105 | |
Lespiau, Damien | 974e070 | 2013-08-19 16:58:57 +0100 | [diff] [blame] | 106 | /* Bit 3 and 2 indicate if we transmit horizontal/vertical bar data */ |
| 107 | if (frame->top_bar || frame->bottom_bar) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 108 | ptr[0] |= BIT(3); |
| 109 | |
Lespiau, Damien | 974e070 | 2013-08-19 16:58:57 +0100 | [diff] [blame] | 110 | if (frame->left_bar || frame->right_bar) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 111 | ptr[0] |= BIT(2); |
| 112 | |
| 113 | ptr[1] = ((frame->colorimetry & 0x3) << 6) | |
| 114 | ((frame->picture_aspect & 0x3) << 4) | |
| 115 | (frame->active_aspect & 0xf); |
| 116 | |
| 117 | ptr[2] = ((frame->extended_colorimetry & 0x7) << 4) | |
| 118 | ((frame->quantization_range & 0x3) << 2) | |
| 119 | (frame->nups & 0x3); |
| 120 | |
| 121 | if (frame->itc) |
| 122 | ptr[2] |= BIT(7); |
| 123 | |
| 124 | ptr[3] = frame->video_code & 0x7f; |
| 125 | |
| 126 | ptr[4] = ((frame->ycc_quantization_range & 0x3) << 6) | |
| 127 | ((frame->content_type & 0x3) << 4) | |
| 128 | (frame->pixel_repeat & 0xf); |
| 129 | |
| 130 | ptr[5] = frame->top_bar & 0xff; |
| 131 | ptr[6] = (frame->top_bar >> 8) & 0xff; |
| 132 | ptr[7] = frame->bottom_bar & 0xff; |
| 133 | ptr[8] = (frame->bottom_bar >> 8) & 0xff; |
| 134 | ptr[9] = frame->left_bar & 0xff; |
| 135 | ptr[10] = (frame->left_bar >> 8) & 0xff; |
| 136 | ptr[11] = frame->right_bar & 0xff; |
| 137 | ptr[12] = (frame->right_bar >> 8) & 0xff; |
| 138 | |
| 139 | hdmi_infoframe_checksum(buffer, length); |
| 140 | |
| 141 | return length; |
| 142 | } |
| 143 | EXPORT_SYMBOL(hdmi_avi_infoframe_pack); |
| 144 | |
| 145 | /** |
| 146 | * hdmi_spd_infoframe_init() - initialize an HDMI SPD infoframe |
| 147 | * @frame: HDMI SPD infoframe |
| 148 | * @vendor: vendor string |
| 149 | * @product: product string |
| 150 | * |
| 151 | * Returns 0 on success or a negative error code on failure. |
| 152 | */ |
| 153 | int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, |
| 154 | const char *vendor, const char *product) |
| 155 | { |
| 156 | memset(frame, 0, sizeof(*frame)); |
| 157 | |
| 158 | frame->type = HDMI_INFOFRAME_TYPE_SPD; |
| 159 | frame->version = 1; |
Damien Lespiau | 3c6b054 | 2013-08-06 20:32:13 +0100 | [diff] [blame] | 160 | frame->length = HDMI_SPD_INFOFRAME_SIZE; |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 161 | |
| 162 | strncpy(frame->vendor, vendor, sizeof(frame->vendor)); |
| 163 | strncpy(frame->product, product, sizeof(frame->product)); |
| 164 | |
| 165 | return 0; |
| 166 | } |
| 167 | EXPORT_SYMBOL(hdmi_spd_infoframe_init); |
| 168 | |
| 169 | /** |
| 170 | * hdmi_spd_infoframe_pack() - write HDMI SPD infoframe to binary buffer |
| 171 | * @frame: HDMI SPD infoframe |
| 172 | * @buffer: destination buffer |
| 173 | * @size: size of buffer |
| 174 | * |
| 175 | * Packs the information contained in the @frame structure into a binary |
| 176 | * representation that can be written into the corresponding controller |
| 177 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 178 | * the HDMI 1.4 specification. |
| 179 | * |
| 180 | * Returns the number of bytes packed into the binary buffer or a negative |
| 181 | * error code on failure. |
| 182 | */ |
| 183 | ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer, |
| 184 | size_t size) |
| 185 | { |
| 186 | u8 *ptr = buffer; |
| 187 | size_t length; |
| 188 | |
| 189 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
| 190 | |
| 191 | if (size < length) |
| 192 | return -ENOSPC; |
| 193 | |
Damien Lespiau | 3b390f6 | 2013-08-06 20:32:16 +0100 | [diff] [blame] | 194 | memset(buffer, 0, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 195 | |
| 196 | ptr[0] = frame->type; |
| 197 | ptr[1] = frame->version; |
| 198 | ptr[2] = frame->length; |
| 199 | ptr[3] = 0; /* checksum */ |
| 200 | |
| 201 | /* start infoframe payload */ |
| 202 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 203 | |
| 204 | memcpy(ptr, frame->vendor, sizeof(frame->vendor)); |
| 205 | memcpy(ptr + 8, frame->product, sizeof(frame->product)); |
| 206 | |
| 207 | ptr[24] = frame->sdi; |
| 208 | |
| 209 | hdmi_infoframe_checksum(buffer, length); |
| 210 | |
| 211 | return length; |
| 212 | } |
| 213 | EXPORT_SYMBOL(hdmi_spd_infoframe_pack); |
| 214 | |
| 215 | /** |
| 216 | * hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe |
| 217 | * @frame: HDMI audio infoframe |
| 218 | * |
| 219 | * Returns 0 on success or a negative error code on failure. |
| 220 | */ |
| 221 | int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame) |
| 222 | { |
| 223 | memset(frame, 0, sizeof(*frame)); |
| 224 | |
| 225 | frame->type = HDMI_INFOFRAME_TYPE_AUDIO; |
| 226 | frame->version = 1; |
Damien Lespiau | 3c6b054 | 2013-08-06 20:32:13 +0100 | [diff] [blame] | 227 | frame->length = HDMI_AUDIO_INFOFRAME_SIZE; |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 228 | |
| 229 | return 0; |
| 230 | } |
| 231 | EXPORT_SYMBOL(hdmi_audio_infoframe_init); |
| 232 | |
| 233 | /** |
| 234 | * hdmi_audio_infoframe_pack() - write HDMI audio infoframe to binary buffer |
| 235 | * @frame: HDMI audio infoframe |
| 236 | * @buffer: destination buffer |
| 237 | * @size: size of buffer |
| 238 | * |
| 239 | * Packs the information contained in the @frame structure into a binary |
| 240 | * representation that can be written into the corresponding controller |
| 241 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 242 | * the HDMI 1.4 specification. |
| 243 | * |
| 244 | * Returns the number of bytes packed into the binary buffer or a negative |
| 245 | * error code on failure. |
| 246 | */ |
| 247 | ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, |
| 248 | void *buffer, size_t size) |
| 249 | { |
| 250 | unsigned char channels; |
| 251 | u8 *ptr = buffer; |
| 252 | size_t length; |
| 253 | |
| 254 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
| 255 | |
| 256 | if (size < length) |
| 257 | return -ENOSPC; |
| 258 | |
Damien Lespiau | 3b390f6 | 2013-08-06 20:32:16 +0100 | [diff] [blame] | 259 | memset(buffer, 0, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 260 | |
| 261 | if (frame->channels >= 2) |
| 262 | channels = frame->channels - 1; |
| 263 | else |
| 264 | channels = 0; |
| 265 | |
| 266 | ptr[0] = frame->type; |
| 267 | ptr[1] = frame->version; |
| 268 | ptr[2] = frame->length; |
| 269 | ptr[3] = 0; /* checksum */ |
| 270 | |
| 271 | /* start infoframe payload */ |
| 272 | ptr += HDMI_INFOFRAME_HEADER_SIZE; |
| 273 | |
| 274 | ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7); |
| 275 | ptr[1] = ((frame->sample_frequency & 0x7) << 2) | |
| 276 | (frame->sample_size & 0x3); |
| 277 | ptr[2] = frame->coding_type_ext & 0x1f; |
| 278 | ptr[3] = frame->channel_allocation; |
| 279 | ptr[4] = (frame->level_shift_value & 0xf) << 3; |
| 280 | |
| 281 | if (frame->downmix_inhibit) |
| 282 | ptr[4] |= BIT(7); |
| 283 | |
| 284 | hdmi_infoframe_checksum(buffer, length); |
| 285 | |
| 286 | return length; |
| 287 | } |
| 288 | EXPORT_SYMBOL(hdmi_audio_infoframe_pack); |
| 289 | |
| 290 | /** |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 291 | * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 292 | * @frame: HDMI vendor infoframe |
| 293 | * |
| 294 | * Returns 0 on success or a negative error code on failure. |
| 295 | */ |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 296 | int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame) |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 297 | { |
| 298 | memset(frame, 0, sizeof(*frame)); |
| 299 | |
| 300 | frame->type = HDMI_INFOFRAME_TYPE_VENDOR; |
| 301 | frame->version = 1; |
| 302 | |
Lespiau, Damien | af3e95b | 2013-08-19 16:59:01 +0100 | [diff] [blame] | 303 | frame->oui = HDMI_IDENTIFIER; |
| 304 | |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 305 | /* |
| 306 | * 0 is a valid value for s3d_struct, so we use a special "not set" |
| 307 | * value |
| 308 | */ |
| 309 | frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID; |
| 310 | |
| 311 | return 0; |
| 312 | } |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 313 | EXPORT_SYMBOL(hdmi_vendor_infoframe_init); |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 314 | |
| 315 | /** |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 316 | * hdmi_vendor_infoframe_pack() - write a HDMI vendor infoframe to binary buffer |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 317 | * @frame: HDMI infoframe |
| 318 | * @buffer: destination buffer |
| 319 | * @size: size of buffer |
| 320 | * |
| 321 | * Packs the information contained in the @frame structure into a binary |
| 322 | * representation that can be written into the corresponding controller |
| 323 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 324 | * the HDMI 1.4 specification. |
| 325 | * |
| 326 | * Returns the number of bytes packed into the binary buffer or a negative |
| 327 | * error code on failure. |
| 328 | */ |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 329 | ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 330 | void *buffer, size_t size) |
| 331 | { |
| 332 | u8 *ptr = buffer; |
| 333 | size_t length; |
| 334 | |
| 335 | /* empty info frame */ |
| 336 | if (frame->vic == 0 && frame->s3d_struct == HDMI_3D_STRUCTURE_INVALID) |
| 337 | return -EINVAL; |
| 338 | |
| 339 | /* only one of those can be supplied */ |
| 340 | if (frame->vic != 0 && frame->s3d_struct != HDMI_3D_STRUCTURE_INVALID) |
| 341 | return -EINVAL; |
| 342 | |
| 343 | /* for side by side (half) we also need to provide 3D_Ext_Data */ |
| 344 | if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) |
| 345 | frame->length = 6; |
| 346 | else |
| 347 | frame->length = 5; |
| 348 | |
| 349 | length = HDMI_INFOFRAME_HEADER_SIZE + frame->length; |
| 350 | |
| 351 | if (size < length) |
| 352 | return -ENOSPC; |
| 353 | |
| 354 | memset(buffer, 0, size); |
| 355 | |
| 356 | ptr[0] = frame->type; |
| 357 | ptr[1] = frame->version; |
| 358 | ptr[2] = frame->length; |
| 359 | ptr[3] = 0; /* checksum */ |
| 360 | |
| 361 | /* HDMI OUI */ |
| 362 | ptr[4] = 0x03; |
| 363 | ptr[5] = 0x0c; |
| 364 | ptr[6] = 0x00; |
| 365 | |
| 366 | if (frame->vic) { |
| 367 | ptr[7] = 0x1 << 5; /* video format */ |
| 368 | ptr[8] = frame->vic; |
| 369 | } else { |
| 370 | ptr[7] = 0x2 << 5; /* video format */ |
| 371 | ptr[8] = (frame->s3d_struct & 0xf) << 4; |
| 372 | if (frame->s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) |
| 373 | ptr[9] = (frame->s3d_ext_data & 0xf) << 4; |
| 374 | } |
| 375 | |
| 376 | hdmi_infoframe_checksum(buffer, length); |
| 377 | |
| 378 | return length; |
| 379 | } |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 380 | EXPORT_SYMBOL(hdmi_vendor_infoframe_pack); |
Lespiau, Damien | 7d27bec | 2013-08-19 16:58:58 +0100 | [diff] [blame] | 381 | |
Lespiau, Damien | af3e95b | 2013-08-19 16:59:01 +0100 | [diff] [blame] | 382 | /* |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 383 | * hdmi_vendor_any_infoframe_pack() - write a vendor infoframe to binary buffer |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 384 | */ |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 385 | static ssize_t |
| 386 | hdmi_vendor_any_infoframe_pack(union hdmi_vendor_any_infoframe *frame, |
| 387 | void *buffer, size_t size) |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 388 | { |
Lespiau, Damien | af3e95b | 2013-08-19 16:59:01 +0100 | [diff] [blame] | 389 | /* we only know about HDMI vendor infoframes */ |
| 390 | if (frame->any.oui != HDMI_IDENTIFIER) |
| 391 | return -EINVAL; |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 392 | |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 393 | return hdmi_vendor_infoframe_pack(&frame->hdmi, buffer, size); |
Thierry Reding | f142d3b | 2012-11-21 15:29:29 +0100 | [diff] [blame] | 394 | } |
Damien Lespiau | 72b0989 | 2013-08-06 20:32:14 +0100 | [diff] [blame] | 395 | |
| 396 | /** |
| 397 | * hdmi_infoframe_pack() - write a HDMI infoframe to binary buffer |
| 398 | * @frame: HDMI infoframe |
| 399 | * @buffer: destination buffer |
| 400 | * @size: size of buffer |
| 401 | * |
| 402 | * Packs the information contained in the @frame structure into a binary |
| 403 | * representation that can be written into the corresponding controller |
| 404 | * registers. Also computes the checksum as required by section 5.3.5 of |
| 405 | * the HDMI 1.4 specification. |
| 406 | * |
| 407 | * Returns the number of bytes packed into the binary buffer or a negative |
| 408 | * error code on failure. |
| 409 | */ |
| 410 | ssize_t |
| 411 | hdmi_infoframe_pack(union hdmi_infoframe *frame, void *buffer, size_t size) |
| 412 | { |
| 413 | ssize_t length; |
| 414 | |
| 415 | switch (frame->any.type) { |
| 416 | case HDMI_INFOFRAME_TYPE_AVI: |
| 417 | length = hdmi_avi_infoframe_pack(&frame->avi, buffer, size); |
| 418 | break; |
| 419 | case HDMI_INFOFRAME_TYPE_SPD: |
| 420 | length = hdmi_spd_infoframe_pack(&frame->spd, buffer, size); |
| 421 | break; |
| 422 | case HDMI_INFOFRAME_TYPE_AUDIO: |
| 423 | length = hdmi_audio_infoframe_pack(&frame->audio, buffer, size); |
| 424 | break; |
| 425 | case HDMI_INFOFRAME_TYPE_VENDOR: |
Lespiau, Damien | ae84b90 | 2013-08-19 16:59:02 +0100 | [diff] [blame^] | 426 | length = hdmi_vendor_any_infoframe_pack(&frame->vendor, |
| 427 | buffer, size); |
Damien Lespiau | 72b0989 | 2013-08-06 20:32:14 +0100 | [diff] [blame] | 428 | break; |
| 429 | default: |
| 430 | WARN(1, "Bad infoframe type %d\n", frame->any.type); |
| 431 | length = -EINVAL; |
| 432 | } |
| 433 | |
| 434 | return length; |
| 435 | } |
| 436 | EXPORT_SYMBOL(hdmi_infoframe_pack); |