Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006 Luc Verhaegen (quirks list) |
| 3 | * Copyright (c) 2007-2008 Intel Corporation |
| 4 | * Jesse Barnes <jesse.barnes@intel.com> |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 5 | * Copyright 2010 Red Hat, Inc. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 6 | * |
| 7 | * DDC probing routines (drm_ddc_read & drm_do_probe_ddc_edid) originally from |
| 8 | * FB layer. |
| 9 | * Copyright (C) 2006 Dennis Munsie <dmunsie@cecropia.com> |
| 10 | * |
| 11 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 12 | * copy of this software and associated documentation files (the "Software"), |
| 13 | * to deal in the Software without restriction, including without limitation |
| 14 | * the rights to use, copy, modify, merge, publish, distribute, sub license, |
| 15 | * and/or sell copies of the Software, and to permit persons to whom the |
| 16 | * Software is furnished to do so, subject to the following conditions: |
| 17 | * |
| 18 | * The above copyright notice and this permission notice (including the |
| 19 | * next paragraph) shall be included in all copies or substantial portions |
| 20 | * of the Software. |
| 21 | * |
| 22 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 23 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 24 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| 25 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 26 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 28 | * DEALINGS IN THE SOFTWARE. |
| 29 | */ |
| 30 | #include <linux/kernel.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 31 | #include <linux/slab.h> |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 32 | #include <linux/i2c.h> |
| 33 | #include <linux/i2c-algo-bit.h> |
| 34 | #include "drmP.h" |
| 35 | #include "drm_edid.h" |
Adam Jackson | 38fcbb67 | 2010-08-03 14:38:20 -0400 | [diff] [blame] | 36 | #include "drm_edid_modes.h" |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 37 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 38 | #define version_greater(edid, maj, min) \ |
| 39 | (((edid)->version > (maj)) || \ |
| 40 | ((edid)->version == (maj) && (edid)->revision > (min))) |
| 41 | |
Adam Jackson | d1ff640 | 2010-03-29 21:43:26 +0000 | [diff] [blame] | 42 | #define EDID_EST_TIMINGS 16 |
| 43 | #define EDID_STD_TIMINGS 8 |
| 44 | #define EDID_DETAILED_TIMINGS 4 |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 45 | |
| 46 | /* |
| 47 | * EDID blocks out in the wild have a variety of bugs, try to collect |
| 48 | * them here (note that userspace may work around broken monitors first, |
| 49 | * but fixes should make their way here so that the kernel "just works" |
| 50 | * on as many displays as possible). |
| 51 | */ |
| 52 | |
| 53 | /* First detailed mode wrong, use largest 60Hz mode */ |
| 54 | #define EDID_QUIRK_PREFER_LARGE_60 (1 << 0) |
| 55 | /* Reported 135MHz pixel clock is too high, needs adjustment */ |
| 56 | #define EDID_QUIRK_135_CLOCK_TOO_HIGH (1 << 1) |
| 57 | /* Prefer the largest mode at 75 Hz */ |
| 58 | #define EDID_QUIRK_PREFER_LARGE_75 (1 << 2) |
| 59 | /* Detail timing is in cm not mm */ |
| 60 | #define EDID_QUIRK_DETAILED_IN_CM (1 << 3) |
| 61 | /* Detailed timing descriptors have bogus size values, so just take the |
| 62 | * maximum size and use that. |
| 63 | */ |
| 64 | #define EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE (1 << 4) |
| 65 | /* Monitor forgot to set the first detailed is preferred bit. */ |
| 66 | #define EDID_QUIRK_FIRST_DETAILED_PREFERRED (1 << 5) |
| 67 | /* use +hsync +vsync for detailed mode */ |
| 68 | #define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6) |
Alex Deucher | 3c53788 | 2010-02-05 04:21:19 -0500 | [diff] [blame] | 69 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 70 | struct detailed_mode_closure { |
| 71 | struct drm_connector *connector; |
| 72 | struct edid *edid; |
| 73 | bool preferred; |
| 74 | u32 quirks; |
| 75 | int modes; |
| 76 | }; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 77 | |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 78 | #define LEVEL_DMT 0 |
| 79 | #define LEVEL_GTF 1 |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 80 | #define LEVEL_GTF2 2 |
| 81 | #define LEVEL_CVT 3 |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 82 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 83 | static struct edid_quirk { |
| 84 | char *vendor; |
| 85 | int product_id; |
| 86 | u32 quirks; |
| 87 | } edid_quirk_list[] = { |
| 88 | /* Acer AL1706 */ |
| 89 | { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 }, |
| 90 | /* Acer F51 */ |
| 91 | { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 }, |
| 92 | /* Unknown Acer */ |
| 93 | { "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
| 94 | |
| 95 | /* Belinea 10 15 55 */ |
| 96 | { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, |
| 97 | { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 }, |
| 98 | |
| 99 | /* Envision Peripherals, Inc. EN-7100e */ |
| 100 | { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH }, |
Adam Jackson | ba1163d | 2010-04-06 16:11:00 +0000 | [diff] [blame] | 101 | /* Envision EN2028 */ |
| 102 | { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 }, |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 103 | |
| 104 | /* Funai Electronics PM36B */ |
| 105 | { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 | |
| 106 | EDID_QUIRK_DETAILED_IN_CM }, |
| 107 | |
| 108 | /* LG Philips LCD LP154W01-A5 */ |
| 109 | { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, |
| 110 | { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, |
| 111 | |
| 112 | /* Philips 107p5 CRT */ |
| 113 | { "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
| 114 | |
| 115 | /* Proview AY765C */ |
| 116 | { "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
| 117 | |
| 118 | /* Samsung SyncMaster 205BW. Note: irony */ |
| 119 | { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP }, |
| 120 | /* Samsung SyncMaster 22[5-6]BW */ |
| 121 | { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 }, |
| 122 | { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 }, |
| 123 | }; |
| 124 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 125 | /*** DDC fetch and block validation ***/ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 126 | |
Adam Jackson | 083ae05 | 2009-09-23 17:30:45 -0400 | [diff] [blame] | 127 | static const u8 edid_header[] = { |
| 128 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 |
| 129 | }; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 130 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 131 | /* |
| 132 | * Sanity check the EDID block (base or extension). Return 0 if the block |
| 133 | * doesn't check out, or 1 if it's valid. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 134 | */ |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 135 | static bool |
| 136 | drm_edid_block_valid(u8 *raw_edid) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 137 | { |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 138 | int i; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 139 | u8 csum = 0; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 140 | struct edid *edid = (struct edid *)raw_edid; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 141 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 142 | if (raw_edid[0] == 0x00) { |
| 143 | int score = 0; |
Adam Jackson | 862b89c | 2009-11-23 14:23:06 -0500 | [diff] [blame] | 144 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 145 | for (i = 0; i < sizeof(edid_header); i++) |
| 146 | if (raw_edid[i] == edid_header[i]) |
| 147 | score++; |
| 148 | |
| 149 | if (score == 8) ; |
| 150 | else if (score >= 6) { |
| 151 | DRM_DEBUG("Fixing EDID header, your hardware may be failing\n"); |
| 152 | memcpy(raw_edid, edid_header, sizeof(edid_header)); |
| 153 | } else { |
| 154 | goto bad; |
| 155 | } |
| 156 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 157 | |
| 158 | for (i = 0; i < EDID_LENGTH; i++) |
| 159 | csum += raw_edid[i]; |
| 160 | if (csum) { |
| 161 | DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum); |
Adam Jackson | 4a638b4 | 2010-05-25 16:33:09 -0400 | [diff] [blame] | 162 | |
| 163 | /* allow CEA to slide through, switches mangle this */ |
| 164 | if (raw_edid[0] != 0x02) |
| 165 | goto bad; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 166 | } |
| 167 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 168 | /* per-block-type checks */ |
| 169 | switch (raw_edid[0]) { |
| 170 | case 0: /* base */ |
| 171 | if (edid->version != 1) { |
| 172 | DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version); |
| 173 | goto bad; |
| 174 | } |
Adam Jackson | 862b89c | 2009-11-23 14:23:06 -0500 | [diff] [blame] | 175 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 176 | if (edid->revision > 4) |
| 177 | DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n"); |
| 178 | break; |
| 179 | |
| 180 | default: |
| 181 | break; |
| 182 | } |
Adam Jackson | 47ee4cc | 2009-11-23 14:23:05 -0500 | [diff] [blame] | 183 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 184 | return 1; |
| 185 | |
| 186 | bad: |
| 187 | if (raw_edid) { |
| 188 | DRM_ERROR("Raw EDID:\n"); |
| 189 | print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH); |
| 190 | printk("\n"); |
| 191 | } |
| 192 | return 0; |
| 193 | } |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 194 | |
| 195 | /** |
| 196 | * drm_edid_is_valid - sanity check EDID data |
| 197 | * @edid: EDID data |
| 198 | * |
| 199 | * Sanity-check an entire EDID record (including extensions) |
| 200 | */ |
| 201 | bool drm_edid_is_valid(struct edid *edid) |
| 202 | { |
| 203 | int i; |
| 204 | u8 *raw = (u8 *)edid; |
| 205 | |
| 206 | if (!edid) |
| 207 | return false; |
| 208 | |
| 209 | for (i = 0; i <= edid->extensions; i++) |
| 210 | if (!drm_edid_block_valid(raw + i * EDID_LENGTH)) |
| 211 | return false; |
| 212 | |
| 213 | return true; |
| 214 | } |
Alex Deucher | 3c53788 | 2010-02-05 04:21:19 -0500 | [diff] [blame] | 215 | EXPORT_SYMBOL(drm_edid_is_valid); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 216 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 217 | #define DDC_ADDR 0x50 |
| 218 | #define DDC_SEGMENT_ADDR 0x30 |
| 219 | /** |
| 220 | * Get EDID information via I2C. |
| 221 | * |
| 222 | * \param adapter : i2c device adaptor |
| 223 | * \param buf : EDID data buffer to be filled |
| 224 | * \param len : EDID data buffer length |
| 225 | * \return 0 on success or -1 on failure. |
| 226 | * |
| 227 | * Try to fetch EDID information by calling i2c driver function. |
| 228 | */ |
| 229 | static int |
| 230 | drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf, |
| 231 | int block, int len) |
| 232 | { |
| 233 | unsigned char start = block * EDID_LENGTH; |
| 234 | struct i2c_msg msgs[] = { |
| 235 | { |
| 236 | .addr = DDC_ADDR, |
| 237 | .flags = 0, |
| 238 | .len = 1, |
| 239 | .buf = &start, |
| 240 | }, { |
| 241 | .addr = DDC_ADDR, |
| 242 | .flags = I2C_M_RD, |
| 243 | .len = len, |
| 244 | .buf = buf + start, |
| 245 | } |
| 246 | }; |
| 247 | |
| 248 | if (i2c_transfer(adapter, msgs, 2) == 2) |
| 249 | return 0; |
| 250 | |
| 251 | return -1; |
| 252 | } |
| 253 | |
| 254 | static u8 * |
| 255 | drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) |
| 256 | { |
| 257 | int i, j = 0; |
| 258 | u8 *block, *new; |
| 259 | |
| 260 | if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL) |
| 261 | return NULL; |
| 262 | |
| 263 | /* base block fetch */ |
| 264 | for (i = 0; i < 4; i++) { |
| 265 | if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH)) |
| 266 | goto out; |
| 267 | if (drm_edid_block_valid(block)) |
| 268 | break; |
| 269 | } |
| 270 | if (i == 4) |
| 271 | goto carp; |
| 272 | |
| 273 | /* if there's no extensions, we're done */ |
| 274 | if (block[0x7e] == 0) |
| 275 | return block; |
| 276 | |
| 277 | new = krealloc(block, (block[0x7e] + 1) * EDID_LENGTH, GFP_KERNEL); |
| 278 | if (!new) |
| 279 | goto out; |
| 280 | block = new; |
| 281 | |
| 282 | for (j = 1; j <= block[0x7e]; j++) { |
| 283 | for (i = 0; i < 4; i++) { |
| 284 | if (drm_do_probe_ddc_edid(adapter, block, j, |
| 285 | EDID_LENGTH)) |
| 286 | goto out; |
| 287 | if (drm_edid_block_valid(block + j * EDID_LENGTH)) |
| 288 | break; |
| 289 | } |
| 290 | if (i == 4) |
| 291 | goto carp; |
| 292 | } |
| 293 | |
| 294 | return block; |
| 295 | |
| 296 | carp: |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 297 | dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n", |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 298 | drm_get_connector_name(connector), j); |
| 299 | |
| 300 | out: |
| 301 | kfree(block); |
| 302 | return NULL; |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Probe DDC presence. |
| 307 | * |
| 308 | * \param adapter : i2c device adaptor |
| 309 | * \return 1 on success |
| 310 | */ |
| 311 | static bool |
| 312 | drm_probe_ddc(struct i2c_adapter *adapter) |
| 313 | { |
| 314 | unsigned char out; |
| 315 | |
| 316 | return (drm_do_probe_ddc_edid(adapter, &out, 0, 1) == 0); |
| 317 | } |
| 318 | |
| 319 | /** |
| 320 | * drm_get_edid - get EDID data, if available |
| 321 | * @connector: connector we're probing |
| 322 | * @adapter: i2c adapter to use for DDC |
| 323 | * |
| 324 | * Poke the given i2c channel to grab EDID data if possible. If found, |
| 325 | * attach it to the connector. |
| 326 | * |
| 327 | * Return edid data or NULL if we couldn't find any. |
| 328 | */ |
| 329 | struct edid *drm_get_edid(struct drm_connector *connector, |
| 330 | struct i2c_adapter *adapter) |
| 331 | { |
| 332 | struct edid *edid = NULL; |
| 333 | |
| 334 | if (drm_probe_ddc(adapter)) |
| 335 | edid = (struct edid *)drm_do_get_edid(connector, adapter); |
| 336 | |
| 337 | connector->display_info.raw_edid = (char *)edid; |
| 338 | |
| 339 | return edid; |
| 340 | |
| 341 | } |
| 342 | EXPORT_SYMBOL(drm_get_edid); |
| 343 | |
| 344 | /*** EDID parsing ***/ |
| 345 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 346 | /** |
| 347 | * edid_vendor - match a string against EDID's obfuscated vendor field |
| 348 | * @edid: EDID to match |
| 349 | * @vendor: vendor string |
| 350 | * |
| 351 | * Returns true if @vendor is in @edid, false otherwise |
| 352 | */ |
| 353 | static bool edid_vendor(struct edid *edid, char *vendor) |
| 354 | { |
| 355 | char edid_vendor[3]; |
| 356 | |
| 357 | edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@'; |
| 358 | edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) | |
| 359 | ((edid->mfg_id[1] & 0xe0) >> 5)) + '@'; |
Dave Airlie | 16456c8 | 2009-04-03 09:10:33 +1000 | [diff] [blame] | 360 | edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@'; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 361 | |
| 362 | return !strncmp(edid_vendor, vendor, 3); |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * edid_get_quirks - return quirk flags for a given EDID |
| 367 | * @edid: EDID to process |
| 368 | * |
| 369 | * This tells subsequent routines what fixes they need to apply. |
| 370 | */ |
| 371 | static u32 edid_get_quirks(struct edid *edid) |
| 372 | { |
| 373 | struct edid_quirk *quirk; |
| 374 | int i; |
| 375 | |
| 376 | for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) { |
| 377 | quirk = &edid_quirk_list[i]; |
| 378 | |
| 379 | if (edid_vendor(edid, quirk->vendor) && |
| 380 | (EDID_PRODUCT_ID(edid) == quirk->product_id)) |
| 381 | return quirk->quirks; |
| 382 | } |
| 383 | |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | #define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay) |
| 388 | #define MODE_REFRESH_DIFF(m,r) (abs((m)->vrefresh - target_refresh)) |
| 389 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 390 | /** |
| 391 | * edid_fixup_preferred - set preferred modes based on quirk list |
| 392 | * @connector: has mode list to fix up |
| 393 | * @quirks: quirks list |
| 394 | * |
| 395 | * Walk the mode list for @connector, clearing the preferred status |
| 396 | * on existing modes and setting it anew for the right mode ala @quirks. |
| 397 | */ |
| 398 | static void edid_fixup_preferred(struct drm_connector *connector, |
| 399 | u32 quirks) |
| 400 | { |
| 401 | struct drm_display_mode *t, *cur_mode, *preferred_mode; |
Dave Airlie | f890607 | 2008-12-18 16:59:02 +1000 | [diff] [blame] | 402 | int target_refresh = 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 403 | |
| 404 | if (list_empty(&connector->probed_modes)) |
| 405 | return; |
| 406 | |
| 407 | if (quirks & EDID_QUIRK_PREFER_LARGE_60) |
| 408 | target_refresh = 60; |
| 409 | if (quirks & EDID_QUIRK_PREFER_LARGE_75) |
| 410 | target_refresh = 75; |
| 411 | |
| 412 | preferred_mode = list_first_entry(&connector->probed_modes, |
| 413 | struct drm_display_mode, head); |
| 414 | |
| 415 | list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) { |
| 416 | cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED; |
| 417 | |
| 418 | if (cur_mode == preferred_mode) |
| 419 | continue; |
| 420 | |
| 421 | /* Largest mode is preferred */ |
| 422 | if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode)) |
| 423 | preferred_mode = cur_mode; |
| 424 | |
| 425 | /* At a given size, try to get closest to target refresh */ |
| 426 | if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) && |
| 427 | MODE_REFRESH_DIFF(cur_mode, target_refresh) < |
| 428 | MODE_REFRESH_DIFF(preferred_mode, target_refresh)) { |
| 429 | preferred_mode = cur_mode; |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | preferred_mode->type |= DRM_MODE_TYPE_PREFERRED; |
| 434 | } |
| 435 | |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 436 | struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, |
| 437 | int hsize, int vsize, int fresh) |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 438 | { |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 439 | int i; |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 440 | struct drm_display_mode *ptr, *mode; |
| 441 | |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 442 | mode = NULL; |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 443 | for (i = 0; i < drm_num_dmt_modes; i++) { |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 444 | ptr = &drm_dmt_modes[i]; |
| 445 | if (hsize == ptr->hdisplay && |
| 446 | vsize == ptr->vdisplay && |
| 447 | fresh == drm_mode_vrefresh(ptr)) { |
| 448 | /* get the expected default mode */ |
| 449 | mode = drm_mode_duplicate(dev, ptr); |
| 450 | break; |
| 451 | } |
| 452 | } |
| 453 | return mode; |
| 454 | } |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 455 | EXPORT_SYMBOL(drm_mode_find_dmt); |
Adam Jackson | 23425ca | 2009-09-23 17:30:58 -0400 | [diff] [blame] | 456 | |
Adam Jackson | d1ff640 | 2010-03-29 21:43:26 +0000 | [diff] [blame] | 457 | typedef void detailed_cb(struct detailed_timing *timing, void *closure); |
| 458 | |
| 459 | static void |
Adam Jackson | 4d76a22 | 2010-08-03 14:38:17 -0400 | [diff] [blame] | 460 | cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure) |
| 461 | { |
| 462 | int i, n = 0; |
| 463 | u8 rev = ext[0x01], d = ext[0x02]; |
| 464 | u8 *det_base = ext + d; |
| 465 | |
| 466 | switch (rev) { |
| 467 | case 0: |
| 468 | /* can't happen */ |
| 469 | return; |
| 470 | case 1: |
| 471 | /* have to infer how many blocks we have, check pixel clock */ |
| 472 | for (i = 0; i < 6; i++) |
| 473 | if (det_base[18*i] || det_base[18*i+1]) |
| 474 | n++; |
| 475 | break; |
| 476 | default: |
| 477 | /* explicit count */ |
| 478 | n = min(ext[0x03] & 0x0f, 6); |
| 479 | break; |
| 480 | } |
| 481 | |
| 482 | for (i = 0; i < n; i++) |
| 483 | cb((struct detailed_timing *)(det_base + 18 * i), closure); |
| 484 | } |
| 485 | |
| 486 | static void |
Adam Jackson | cbba98f | 2010-08-03 14:38:18 -0400 | [diff] [blame] | 487 | vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure) |
| 488 | { |
| 489 | unsigned int i, n = min((int)ext[0x02], 6); |
| 490 | u8 *det_base = ext + 5; |
| 491 | |
| 492 | if (ext[0x01] != 1) |
| 493 | return; /* unknown version */ |
| 494 | |
| 495 | for (i = 0; i < n; i++) |
| 496 | cb((struct detailed_timing *)(det_base + 18 * i), closure); |
| 497 | } |
| 498 | |
| 499 | static void |
Adam Jackson | d1ff640 | 2010-03-29 21:43:26 +0000 | [diff] [blame] | 500 | drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure) |
| 501 | { |
| 502 | int i; |
| 503 | struct edid *edid = (struct edid *)raw_edid; |
| 504 | |
| 505 | if (edid == NULL) |
| 506 | return; |
| 507 | |
| 508 | for (i = 0; i < EDID_DETAILED_TIMINGS; i++) |
| 509 | cb(&(edid->detailed_timings[i]), closure); |
| 510 | |
Adam Jackson | 4d76a22 | 2010-08-03 14:38:17 -0400 | [diff] [blame] | 511 | for (i = 1; i <= raw_edid[0x7e]; i++) { |
| 512 | u8 *ext = raw_edid + (i * EDID_LENGTH); |
| 513 | switch (*ext) { |
| 514 | case CEA_EXT: |
| 515 | cea_for_each_detailed_block(ext, cb, closure); |
| 516 | break; |
Adam Jackson | cbba98f | 2010-08-03 14:38:18 -0400 | [diff] [blame] | 517 | case VTB_EXT: |
| 518 | vtb_for_each_detailed_block(ext, cb, closure); |
| 519 | break; |
Adam Jackson | 4d76a22 | 2010-08-03 14:38:17 -0400 | [diff] [blame] | 520 | default: |
| 521 | break; |
| 522 | } |
| 523 | } |
Adam Jackson | d1ff640 | 2010-03-29 21:43:26 +0000 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | static void |
| 527 | is_rb(struct detailed_timing *t, void *data) |
| 528 | { |
| 529 | u8 *r = (u8 *)t; |
| 530 | if (r[3] == EDID_DETAIL_MONITOR_RANGE) |
| 531 | if (r[15] & 0x10) |
| 532 | *(bool *)data = true; |
| 533 | } |
| 534 | |
| 535 | /* EDID 1.4 defines this explicitly. For EDID 1.3, we guess, badly. */ |
| 536 | static bool |
| 537 | drm_monitor_supports_rb(struct edid *edid) |
| 538 | { |
| 539 | if (edid->revision >= 4) { |
| 540 | bool ret; |
| 541 | drm_for_each_detailed_block((u8 *)edid, is_rb, &ret); |
| 542 | return ret; |
| 543 | } |
| 544 | |
| 545 | return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0); |
| 546 | } |
| 547 | |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 548 | static void |
| 549 | find_gtf2(struct detailed_timing *t, void *data) |
| 550 | { |
| 551 | u8 *r = (u8 *)t; |
| 552 | if (r[3] == EDID_DETAIL_MONITOR_RANGE && r[10] == 0x02) |
| 553 | *(u8 **)data = r; |
| 554 | } |
| 555 | |
| 556 | /* Secondary GTF curve kicks in above some break frequency */ |
| 557 | static int |
| 558 | drm_gtf2_hbreak(struct edid *edid) |
| 559 | { |
| 560 | u8 *r = NULL; |
| 561 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 562 | return r ? (r[12] * 2) : 0; |
| 563 | } |
| 564 | |
| 565 | static int |
| 566 | drm_gtf2_2c(struct edid *edid) |
| 567 | { |
| 568 | u8 *r = NULL; |
| 569 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 570 | return r ? r[13] : 0; |
| 571 | } |
| 572 | |
| 573 | static int |
| 574 | drm_gtf2_m(struct edid *edid) |
| 575 | { |
| 576 | u8 *r = NULL; |
| 577 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 578 | return r ? (r[15] << 8) + r[14] : 0; |
| 579 | } |
| 580 | |
| 581 | static int |
| 582 | drm_gtf2_k(struct edid *edid) |
| 583 | { |
| 584 | u8 *r = NULL; |
| 585 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 586 | return r ? r[16] : 0; |
| 587 | } |
| 588 | |
| 589 | static int |
| 590 | drm_gtf2_2j(struct edid *edid) |
| 591 | { |
| 592 | u8 *r = NULL; |
| 593 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 594 | return r ? r[17] : 0; |
| 595 | } |
| 596 | |
| 597 | /** |
| 598 | * standard_timing_level - get std. timing level(CVT/GTF/DMT) |
| 599 | * @edid: EDID block to scan |
| 600 | */ |
| 601 | static int standard_timing_level(struct edid *edid) |
| 602 | { |
| 603 | if (edid->revision >= 2) { |
| 604 | if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)) |
| 605 | return LEVEL_CVT; |
| 606 | if (drm_gtf2_hbreak(edid)) |
| 607 | return LEVEL_GTF2; |
| 608 | return LEVEL_GTF; |
| 609 | } |
| 610 | return LEVEL_DMT; |
| 611 | } |
| 612 | |
Adam Jackson | 23425ca | 2009-09-23 17:30:58 -0400 | [diff] [blame] | 613 | /* |
| 614 | * 0 is reserved. The spec says 0x01 fill for unused timings. Some old |
| 615 | * monitors fill with ascii space (0x20) instead. |
| 616 | */ |
| 617 | static int |
| 618 | bad_std_timing(u8 a, u8 b) |
| 619 | { |
| 620 | return (a == 0x00 && b == 0x00) || |
| 621 | (a == 0x01 && b == 0x01) || |
| 622 | (a == 0x20 && b == 0x20); |
| 623 | } |
| 624 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 625 | /** |
| 626 | * drm_mode_std - convert standard mode info (width, height, refresh) into mode |
| 627 | * @t: standard timing params |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 628 | * @timing_level: standard timing level |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 629 | * |
| 630 | * Take the standard timing params (in this case width, aspect, and refresh) |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 631 | * and convert them into a real mode using CVT/GTF/DMT. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 632 | */ |
Adam Jackson | 7ca6adb | 2010-03-29 21:43:29 +0000 | [diff] [blame] | 633 | static struct drm_display_mode * |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 634 | drm_mode_std(struct drm_connector *connector, struct edid *edid, |
| 635 | struct std_timing *t, int revision) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 636 | { |
Adam Jackson | 7ca6adb | 2010-03-29 21:43:29 +0000 | [diff] [blame] | 637 | struct drm_device *dev = connector->dev; |
| 638 | struct drm_display_mode *m, *mode = NULL; |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 639 | int hsize, vsize; |
| 640 | int vrefresh_rate; |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 641 | unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK) |
| 642 | >> EDID_TIMING_ASPECT_SHIFT; |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 643 | unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK) |
| 644 | >> EDID_TIMING_VFREQ_SHIFT; |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 645 | int timing_level = standard_timing_level(edid); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 646 | |
Adam Jackson | 23425ca | 2009-09-23 17:30:58 -0400 | [diff] [blame] | 647 | if (bad_std_timing(t->hsize, t->vfreq_aspect)) |
| 648 | return NULL; |
| 649 | |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 650 | /* According to the EDID spec, the hdisplay = hsize * 8 + 248 */ |
| 651 | hsize = t->hsize * 8 + 248; |
| 652 | /* vrefresh_rate = vfreq + 60 */ |
| 653 | vrefresh_rate = vfreq + 60; |
| 654 | /* the vdisplay is calculated based on the aspect ratio */ |
Adam Jackson | f066a17 | 2009-09-23 17:31:21 -0400 | [diff] [blame] | 655 | if (aspect_ratio == 0) { |
| 656 | if (revision < 3) |
| 657 | vsize = hsize; |
| 658 | else |
| 659 | vsize = (hsize * 10) / 16; |
| 660 | } else if (aspect_ratio == 1) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 661 | vsize = (hsize * 3) / 4; |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 662 | else if (aspect_ratio == 2) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 663 | vsize = (hsize * 4) / 5; |
| 664 | else |
| 665 | vsize = (hsize * 9) / 16; |
Adam Jackson | a0910c8 | 2010-03-29 21:43:28 +0000 | [diff] [blame] | 666 | |
| 667 | /* HDTV hack, part 1 */ |
| 668 | if (vrefresh_rate == 60 && |
| 669 | ((hsize == 1360 && vsize == 765) || |
| 670 | (hsize == 1368 && vsize == 769))) { |
| 671 | hsize = 1366; |
| 672 | vsize = 768; |
| 673 | } |
| 674 | |
Adam Jackson | 7ca6adb | 2010-03-29 21:43:29 +0000 | [diff] [blame] | 675 | /* |
| 676 | * If this connector already has a mode for this size and refresh |
| 677 | * rate (because it came from detailed or CVT info), use that |
| 678 | * instead. This way we don't have to guess at interlace or |
| 679 | * reduced blanking. |
| 680 | */ |
Adam Jackson | 522032d | 2010-04-09 16:52:49 +0000 | [diff] [blame] | 681 | list_for_each_entry(m, &connector->probed_modes, head) |
Adam Jackson | 7ca6adb | 2010-03-29 21:43:29 +0000 | [diff] [blame] | 682 | if (m->hdisplay == hsize && m->vdisplay == vsize && |
| 683 | drm_mode_vrefresh(m) == vrefresh_rate) |
| 684 | return NULL; |
| 685 | |
Adam Jackson | a0910c8 | 2010-03-29 21:43:28 +0000 | [diff] [blame] | 686 | /* HDTV hack, part 2 */ |
| 687 | if (hsize == 1366 && vsize == 768 && vrefresh_rate == 60) { |
| 688 | mode = drm_cvt_mode(dev, 1366, 768, vrefresh_rate, 0, 0, |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 689 | false); |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 690 | mode->hdisplay = 1366; |
Adam Jackson | a4967de | 2010-07-28 07:40:32 +1000 | [diff] [blame] | 691 | mode->hsync_start = mode->hsync_start - 1; |
| 692 | mode->hsync_end = mode->hsync_end - 1; |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 693 | return mode; |
| 694 | } |
Adam Jackson | a0910c8 | 2010-03-29 21:43:28 +0000 | [diff] [blame] | 695 | |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 696 | /* check whether it can be found in default mode table */ |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 697 | mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate); |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 698 | if (mode) |
| 699 | return mode; |
| 700 | |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 701 | switch (timing_level) { |
| 702 | case LEVEL_DMT: |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 703 | break; |
| 704 | case LEVEL_GTF: |
| 705 | mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0); |
| 706 | break; |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 707 | case LEVEL_GTF2: |
| 708 | /* |
| 709 | * This is potentially wrong if there's ever a monitor with |
| 710 | * more than one ranges section, each claiming a different |
| 711 | * secondary GTF curve. Please don't do that. |
| 712 | */ |
| 713 | mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0); |
| 714 | if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) { |
| 715 | kfree(mode); |
| 716 | mode = drm_gtf_mode_complex(dev, hsize, vsize, |
| 717 | vrefresh_rate, 0, 0, |
| 718 | drm_gtf2_m(edid), |
| 719 | drm_gtf2_2c(edid), |
| 720 | drm_gtf2_k(edid), |
| 721 | drm_gtf2_2j(edid)); |
| 722 | } |
| 723 | break; |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 724 | case LEVEL_CVT: |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 725 | mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0, |
| 726 | false); |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 727 | break; |
| 728 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 729 | return mode; |
| 730 | } |
| 731 | |
Adam Jackson | b58db2c | 2010-02-15 22:15:39 +0000 | [diff] [blame] | 732 | /* |
| 733 | * EDID is delightfully ambiguous about how interlaced modes are to be |
| 734 | * encoded. Our internal representation is of frame height, but some |
| 735 | * HDTV detailed timings are encoded as field height. |
| 736 | * |
| 737 | * The format list here is from CEA, in frame size. Technically we |
| 738 | * should be checking refresh rate too. Whatever. |
| 739 | */ |
| 740 | static void |
| 741 | drm_mode_do_interlace_quirk(struct drm_display_mode *mode, |
| 742 | struct detailed_pixel_timing *pt) |
| 743 | { |
| 744 | int i; |
| 745 | static const struct { |
| 746 | int w, h; |
| 747 | } cea_interlaced[] = { |
| 748 | { 1920, 1080 }, |
| 749 | { 720, 480 }, |
| 750 | { 1440, 480 }, |
| 751 | { 2880, 480 }, |
| 752 | { 720, 576 }, |
| 753 | { 1440, 576 }, |
| 754 | { 2880, 576 }, |
| 755 | }; |
| 756 | static const int n_sizes = |
| 757 | sizeof(cea_interlaced)/sizeof(cea_interlaced[0]); |
| 758 | |
| 759 | if (!(pt->misc & DRM_EDID_PT_INTERLACED)) |
| 760 | return; |
| 761 | |
| 762 | for (i = 0; i < n_sizes; i++) { |
| 763 | if ((mode->hdisplay == cea_interlaced[i].w) && |
| 764 | (mode->vdisplay == cea_interlaced[i].h / 2)) { |
| 765 | mode->vdisplay *= 2; |
| 766 | mode->vsync_start *= 2; |
| 767 | mode->vsync_end *= 2; |
| 768 | mode->vtotal *= 2; |
| 769 | mode->vtotal |= 1; |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | mode->flags |= DRM_MODE_FLAG_INTERLACE; |
| 774 | } |
| 775 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 776 | /** |
| 777 | * drm_mode_detailed - create a new mode from an EDID detailed timing section |
| 778 | * @dev: DRM device (needed to create new mode) |
| 779 | * @edid: EDID block |
| 780 | * @timing: EDID detailed timing info |
| 781 | * @quirks: quirks to apply |
| 782 | * |
| 783 | * An EDID detailed timing block contains enough info for us to create and |
| 784 | * return a new struct drm_display_mode. |
| 785 | */ |
| 786 | static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, |
| 787 | struct edid *edid, |
| 788 | struct detailed_timing *timing, |
| 789 | u32 quirks) |
| 790 | { |
| 791 | struct drm_display_mode *mode; |
| 792 | struct detailed_pixel_timing *pt = &timing->data.pixel_data; |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 793 | unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo; |
| 794 | unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo; |
| 795 | unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo; |
| 796 | unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo; |
Michel Dänzer | e14cbee | 2009-06-23 12:36:32 +0200 | [diff] [blame] | 797 | unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo; |
| 798 | unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo; |
| 799 | unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4; |
| 800 | unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 801 | |
Adam Jackson | fc43896 | 2009-06-04 10:20:34 +1000 | [diff] [blame] | 802 | /* ignore tiny modes */ |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 803 | if (hactive < 64 || vactive < 64) |
Adam Jackson | fc43896 | 2009-06-04 10:20:34 +1000 | [diff] [blame] | 804 | return NULL; |
| 805 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 806 | if (pt->misc & DRM_EDID_PT_STEREO) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 807 | printk(KERN_WARNING "stereo mode not supported\n"); |
| 808 | return NULL; |
| 809 | } |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 810 | if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) { |
Jerome Glisse | 79b7dcb | 2010-01-14 19:02:20 +0100 | [diff] [blame] | 811 | printk(KERN_WARNING "composite sync not supported\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 812 | } |
| 813 | |
Zhao Yakui | fcb4561 | 2009-10-14 09:11:25 +0800 | [diff] [blame] | 814 | /* it is incorrect if hsync/vsync width is zero */ |
| 815 | if (!hsync_pulse_width || !vsync_pulse_width) { |
| 816 | DRM_DEBUG_KMS("Incorrect Detailed timing. " |
| 817 | "Wrong Hsync/Vsync pulse width\n"); |
| 818 | return NULL; |
| 819 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 820 | mode = drm_mode_create(dev); |
| 821 | if (!mode) |
| 822 | return NULL; |
| 823 | |
| 824 | mode->type = DRM_MODE_TYPE_DRIVER; |
| 825 | |
| 826 | if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH) |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 827 | timing->pixel_clock = cpu_to_le16(1088); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 828 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 829 | mode->clock = le16_to_cpu(timing->pixel_clock) * 10; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 830 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 831 | mode->hdisplay = hactive; |
| 832 | mode->hsync_start = mode->hdisplay + hsync_offset; |
| 833 | mode->hsync_end = mode->hsync_start + hsync_pulse_width; |
| 834 | mode->htotal = mode->hdisplay + hblank; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 835 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 836 | mode->vdisplay = vactive; |
| 837 | mode->vsync_start = mode->vdisplay + vsync_offset; |
| 838 | mode->vsync_end = mode->vsync_start + vsync_pulse_width; |
| 839 | mode->vtotal = mode->vdisplay + vblank; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 840 | |
Jesse Barnes | 7064fef | 2009-11-05 10:12:54 -0800 | [diff] [blame] | 841 | /* Some EDIDs have bogus h/vtotal values */ |
| 842 | if (mode->hsync_end > mode->htotal) |
| 843 | mode->htotal = mode->hsync_end + 1; |
| 844 | if (mode->vsync_end > mode->vtotal) |
| 845 | mode->vtotal = mode->vsync_end + 1; |
| 846 | |
Adam Jackson | b58db2c | 2010-02-15 22:15:39 +0000 | [diff] [blame] | 847 | drm_mode_do_interlace_quirk(mode, pt); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 848 | |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 849 | drm_mode_set_name(mode); |
| 850 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 851 | if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) { |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 852 | pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 853 | } |
| 854 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 855 | mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ? |
| 856 | DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC; |
| 857 | mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ? |
| 858 | DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 859 | |
Michel Dänzer | e14cbee | 2009-06-23 12:36:32 +0200 | [diff] [blame] | 860 | mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4; |
| 861 | mode->height_mm = pt->height_mm_lo | (pt->width_height_mm_hi & 0xf) << 8; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 862 | |
| 863 | if (quirks & EDID_QUIRK_DETAILED_IN_CM) { |
| 864 | mode->width_mm *= 10; |
| 865 | mode->height_mm *= 10; |
| 866 | } |
| 867 | |
| 868 | if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) { |
| 869 | mode->width_mm = edid->width_cm * 10; |
| 870 | mode->height_mm = edid->height_cm * 10; |
| 871 | } |
| 872 | |
| 873 | return mode; |
| 874 | } |
| 875 | |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 876 | static bool |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 877 | mode_is_rb(struct drm_display_mode *mode) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 878 | { |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 879 | return (mode->htotal - mode->hdisplay == 160) && |
| 880 | (mode->hsync_end - mode->hdisplay == 80) && |
| 881 | (mode->hsync_end - mode->hsync_start == 32) && |
| 882 | (mode->vsync_start - mode->vdisplay == 3); |
| 883 | } |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 884 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 885 | static bool |
| 886 | mode_in_hsync_range(struct drm_display_mode *mode, struct edid *edid, u8 *t) |
| 887 | { |
| 888 | int hsync, hmin, hmax; |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 889 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 890 | hmin = t[7]; |
| 891 | if (edid->revision >= 4) |
| 892 | hmin += ((t[4] & 0x04) ? 255 : 0); |
| 893 | hmax = t[8]; |
| 894 | if (edid->revision >= 4) |
| 895 | hmax += ((t[4] & 0x08) ? 255 : 0); |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 896 | hsync = drm_mode_hsync(mode); |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 897 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 898 | return (hsync <= hmax && hsync >= hmin); |
| 899 | } |
| 900 | |
| 901 | static bool |
| 902 | mode_in_vsync_range(struct drm_display_mode *mode, struct edid *edid, u8 *t) |
| 903 | { |
| 904 | int vsync, vmin, vmax; |
| 905 | |
| 906 | vmin = t[5]; |
| 907 | if (edid->revision >= 4) |
| 908 | vmin += ((t[4] & 0x01) ? 255 : 0); |
| 909 | vmax = t[6]; |
| 910 | if (edid->revision >= 4) |
| 911 | vmax += ((t[4] & 0x02) ? 255 : 0); |
| 912 | vsync = drm_mode_vrefresh(mode); |
| 913 | |
| 914 | return (vsync <= vmax && vsync >= vmin); |
| 915 | } |
| 916 | |
| 917 | static u32 |
| 918 | range_pixel_clock(struct edid *edid, u8 *t) |
| 919 | { |
| 920 | /* unspecified */ |
| 921 | if (t[9] == 0 || t[9] == 255) |
| 922 | return 0; |
| 923 | |
| 924 | /* 1.4 with CVT support gives us real precision, yay */ |
| 925 | if (edid->revision >= 4 && t[10] == 0x04) |
| 926 | return (t[9] * 10000) - ((t[12] >> 2) * 250); |
| 927 | |
| 928 | /* 1.3 is pathetic, so fuzz up a bit */ |
| 929 | return t[9] * 10000 + 5001; |
| 930 | } |
| 931 | |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 932 | static bool |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 933 | mode_in_range(struct drm_display_mode *mode, struct edid *edid, |
| 934 | struct detailed_timing *timing) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 935 | { |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 936 | u32 max_clock; |
| 937 | u8 *t = (u8 *)timing; |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 938 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 939 | if (!mode_in_hsync_range(mode, edid, t)) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 940 | return false; |
| 941 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 942 | if (!mode_in_vsync_range(mode, edid, t)) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 943 | return false; |
| 944 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 945 | if ((max_clock = range_pixel_clock(edid, t))) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 946 | if (mode->clock > max_clock) |
| 947 | return false; |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 948 | |
| 949 | /* 1.4 max horizontal check */ |
| 950 | if (edid->revision >= 4 && t[10] == 0x04) |
| 951 | if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3)))) |
| 952 | return false; |
| 953 | |
| 954 | if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid)) |
| 955 | return false; |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 956 | |
| 957 | return true; |
| 958 | } |
| 959 | |
| 960 | /* |
| 961 | * XXX If drm_dmt_modes ever regrows the CVT-R modes (and it will) this will |
| 962 | * need to account for them. |
| 963 | */ |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 964 | static int |
| 965 | drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid, |
| 966 | struct detailed_timing *timing) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 967 | { |
| 968 | int i, modes = 0; |
| 969 | struct drm_display_mode *newmode; |
| 970 | struct drm_device *dev = connector->dev; |
| 971 | |
| 972 | for (i = 0; i < drm_num_dmt_modes; i++) { |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 973 | if (mode_in_range(drm_dmt_modes + i, edid, timing)) { |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 974 | newmode = drm_mode_duplicate(dev, &drm_dmt_modes[i]); |
| 975 | if (newmode) { |
| 976 | drm_mode_probed_add(connector, newmode); |
| 977 | modes++; |
| 978 | } |
| 979 | } |
| 980 | } |
| 981 | |
| 982 | return modes; |
| 983 | } |
| 984 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 985 | static void |
| 986 | do_inferred_modes(struct detailed_timing *timing, void *c) |
Adam Jackson | 9340d8c | 2009-12-03 17:44:40 -0500 | [diff] [blame] | 987 | { |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 988 | struct detailed_mode_closure *closure = c; |
| 989 | struct detailed_non_pixel *data = &timing->data.other_data; |
| 990 | int gtf = (closure->edid->features & DRM_EDID_FEATURE_DEFAULT_GTF); |
Adam Jackson | 9340d8c | 2009-12-03 17:44:40 -0500 | [diff] [blame] | 991 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 992 | if (gtf && data->type == EDID_DETAIL_MONITOR_RANGE) |
| 993 | closure->modes += drm_gtf_modes_for_range(closure->connector, |
| 994 | closure->edid, |
| 995 | timing); |
Adam Jackson | 9340d8c | 2009-12-03 17:44:40 -0500 | [diff] [blame] | 996 | } |
| 997 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 998 | static int |
| 999 | add_inferred_modes(struct drm_connector *connector, struct edid *edid) |
| 1000 | { |
| 1001 | struct detailed_mode_closure closure = { |
| 1002 | connector, edid, 0, 0, 0 |
| 1003 | }; |
| 1004 | |
| 1005 | if (version_greater(edid, 1, 0)) |
| 1006 | drm_for_each_detailed_block((u8 *)edid, do_inferred_modes, |
| 1007 | &closure); |
| 1008 | |
| 1009 | return closure.modes; |
| 1010 | } |
| 1011 | |
Adam Jackson | 2255be1 | 2010-03-29 21:43:22 +0000 | [diff] [blame] | 1012 | static int |
| 1013 | drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing) |
| 1014 | { |
| 1015 | int i, j, m, modes = 0; |
| 1016 | struct drm_display_mode *mode; |
| 1017 | u8 *est = ((u8 *)timing) + 5; |
| 1018 | |
| 1019 | for (i = 0; i < 6; i++) { |
| 1020 | for (j = 7; j > 0; j--) { |
| 1021 | m = (i * 8) + (7 - j); |
Dan Carpenter | 0ddfa7d | 2010-05-07 08:38:20 +0000 | [diff] [blame] | 1022 | if (m >= num_est3_modes) |
Adam Jackson | 2255be1 | 2010-03-29 21:43:22 +0000 | [diff] [blame] | 1023 | break; |
| 1024 | if (est[i] & (1 << j)) { |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 1025 | mode = drm_mode_find_dmt(connector->dev, |
| 1026 | est3_modes[m].w, |
| 1027 | est3_modes[m].h, |
| 1028 | est3_modes[m].r |
| 1029 | /*, est3_modes[m].rb */); |
Adam Jackson | 2255be1 | 2010-03-29 21:43:22 +0000 | [diff] [blame] | 1030 | if (mode) { |
| 1031 | drm_mode_probed_add(connector, mode); |
| 1032 | modes++; |
| 1033 | } |
| 1034 | } |
| 1035 | } |
| 1036 | } |
| 1037 | |
| 1038 | return modes; |
| 1039 | } |
| 1040 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1041 | static void |
| 1042 | do_established_modes(struct detailed_timing *timing, void *c) |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1043 | { |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1044 | struct detailed_mode_closure *closure = c; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1045 | struct detailed_non_pixel *data = &timing->data.other_data; |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1046 | |
| 1047 | if (data->type == EDID_DETAIL_EST_TIMINGS) |
| 1048 | closure->modes += drm_est3_modes(closure->connector, timing); |
| 1049 | } |
| 1050 | |
| 1051 | /** |
| 1052 | * add_established_modes - get est. modes from EDID and add them |
| 1053 | * @edid: EDID block to scan |
| 1054 | * |
| 1055 | * Each EDID block contains a bitmap of the supported "established modes" list |
| 1056 | * (defined above). Tease them out and add them to the global modes list. |
| 1057 | */ |
| 1058 | static int |
| 1059 | add_established_modes(struct drm_connector *connector, struct edid *edid) |
| 1060 | { |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1061 | struct drm_device *dev = connector->dev; |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1062 | unsigned long est_bits = edid->established_timings.t1 | |
| 1063 | (edid->established_timings.t2 << 8) | |
| 1064 | ((edid->established_timings.mfg_rsvd & 0x80) << 9); |
| 1065 | int i, modes = 0; |
| 1066 | struct detailed_mode_closure closure = { |
| 1067 | connector, edid, 0, 0, 0 |
| 1068 | }; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1069 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1070 | for (i = 0; i <= EDID_EST_TIMINGS; i++) { |
| 1071 | if (est_bits & (1<<i)) { |
| 1072 | struct drm_display_mode *newmode; |
| 1073 | newmode = drm_mode_duplicate(dev, &edid_est_modes[i]); |
| 1074 | if (newmode) { |
| 1075 | drm_mode_probed_add(connector, newmode); |
| 1076 | modes++; |
| 1077 | } |
| 1078 | } |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1079 | } |
| 1080 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1081 | if (version_greater(edid, 1, 0)) |
| 1082 | drm_for_each_detailed_block((u8 *)edid, |
| 1083 | do_established_modes, &closure); |
| 1084 | |
| 1085 | return modes + closure.modes; |
| 1086 | } |
| 1087 | |
| 1088 | static void |
| 1089 | do_standard_modes(struct detailed_timing *timing, void *c) |
| 1090 | { |
| 1091 | struct detailed_mode_closure *closure = c; |
| 1092 | struct detailed_non_pixel *data = &timing->data.other_data; |
| 1093 | struct drm_connector *connector = closure->connector; |
| 1094 | struct edid *edid = closure->edid; |
| 1095 | |
| 1096 | if (data->type == EDID_DETAIL_STD_MODES) { |
| 1097 | int i; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1098 | for (i = 0; i < 6; i++) { |
| 1099 | struct std_timing *std; |
| 1100 | struct drm_display_mode *newmode; |
| 1101 | |
| 1102 | std = &data->data.timings[i]; |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 1103 | newmode = drm_mode_std(connector, edid, std, |
| 1104 | edid->revision); |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1105 | if (newmode) { |
| 1106 | drm_mode_probed_add(connector, newmode); |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1107 | closure->modes++; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1108 | } |
| 1109 | } |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1110 | } |
| 1111 | } |
| 1112 | |
| 1113 | /** |
| 1114 | * add_standard_modes - get std. modes from EDID and add them |
| 1115 | * @edid: EDID block to scan |
| 1116 | * |
| 1117 | * Standard modes can be calculated using the appropriate standard (DMT, |
| 1118 | * GTF or CVT. Grab them from @edid and add them to the list. |
| 1119 | */ |
| 1120 | static int |
| 1121 | add_standard_modes(struct drm_connector *connector, struct edid *edid) |
| 1122 | { |
| 1123 | int i, modes = 0; |
| 1124 | struct detailed_mode_closure closure = { |
| 1125 | connector, edid, 0, 0, 0 |
| 1126 | }; |
| 1127 | |
| 1128 | for (i = 0; i < EDID_STD_TIMINGS; i++) { |
| 1129 | struct drm_display_mode *newmode; |
| 1130 | |
| 1131 | newmode = drm_mode_std(connector, edid, |
| 1132 | &edid->standard_timings[i], |
| 1133 | edid->revision); |
| 1134 | if (newmode) { |
| 1135 | drm_mode_probed_add(connector, newmode); |
| 1136 | modes++; |
| 1137 | } |
| 1138 | } |
| 1139 | |
| 1140 | if (version_greater(edid, 1, 0)) |
| 1141 | drm_for_each_detailed_block((u8 *)edid, do_standard_modes, |
| 1142 | &closure); |
| 1143 | |
| 1144 | /* XXX should also look for standard codes in VTB blocks */ |
| 1145 | |
| 1146 | return modes + closure.modes; |
| 1147 | } |
| 1148 | |
| 1149 | static int drm_cvt_modes(struct drm_connector *connector, |
| 1150 | struct detailed_timing *timing) |
| 1151 | { |
| 1152 | int i, j, modes = 0; |
| 1153 | struct drm_display_mode *newmode; |
| 1154 | struct drm_device *dev = connector->dev; |
| 1155 | struct cvt_timing *cvt; |
| 1156 | const int rates[] = { 60, 85, 75, 60, 50 }; |
| 1157 | const u8 empty[3] = { 0, 0, 0 }; |
| 1158 | |
| 1159 | for (i = 0; i < 4; i++) { |
| 1160 | int uninitialized_var(width), height; |
| 1161 | cvt = &(timing->data.other_data.data.cvt[i]); |
| 1162 | |
| 1163 | if (!memcmp(cvt->code, empty, 3)) |
| 1164 | continue; |
| 1165 | |
| 1166 | height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2; |
| 1167 | switch (cvt->code[1] & 0x0c) { |
| 1168 | case 0x00: |
| 1169 | width = height * 4 / 3; |
| 1170 | break; |
| 1171 | case 0x04: |
| 1172 | width = height * 16 / 9; |
| 1173 | break; |
| 1174 | case 0x08: |
| 1175 | width = height * 16 / 10; |
| 1176 | break; |
| 1177 | case 0x0c: |
| 1178 | width = height * 15 / 9; |
| 1179 | break; |
| 1180 | } |
| 1181 | |
| 1182 | for (j = 1; j < 5; j++) { |
| 1183 | if (cvt->code[2] & (1 << j)) { |
| 1184 | newmode = drm_cvt_mode(dev, width, height, |
| 1185 | rates[j], j == 0, |
| 1186 | false, false); |
| 1187 | if (newmode) { |
| 1188 | drm_mode_probed_add(connector, newmode); |
| 1189 | modes++; |
| 1190 | } |
| 1191 | } |
| 1192 | } |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1193 | } |
| 1194 | |
| 1195 | return modes; |
| 1196 | } |
| 1197 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1198 | static void |
| 1199 | do_cvt_mode(struct detailed_timing *timing, void *c) |
| 1200 | { |
| 1201 | struct detailed_mode_closure *closure = c; |
| 1202 | struct detailed_non_pixel *data = &timing->data.other_data; |
| 1203 | |
| 1204 | if (data->type == EDID_DETAIL_CVT_3BYTE) |
| 1205 | closure->modes += drm_cvt_modes(closure->connector, timing); |
| 1206 | } |
| 1207 | |
| 1208 | static int |
| 1209 | add_cvt_modes(struct drm_connector *connector, struct edid *edid) |
| 1210 | { |
| 1211 | struct detailed_mode_closure closure = { |
| 1212 | connector, edid, 0, 0, 0 |
| 1213 | }; |
| 1214 | |
| 1215 | if (version_greater(edid, 1, 2)) |
| 1216 | drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure); |
| 1217 | |
| 1218 | /* XXX should also look for CVT codes in VTB blocks */ |
| 1219 | |
| 1220 | return closure.modes; |
| 1221 | } |
| 1222 | |
| 1223 | static void |
| 1224 | do_detailed_mode(struct detailed_timing *timing, void *c) |
| 1225 | { |
| 1226 | struct detailed_mode_closure *closure = c; |
| 1227 | struct drm_display_mode *newmode; |
| 1228 | |
| 1229 | if (timing->pixel_clock) { |
| 1230 | newmode = drm_mode_detailed(closure->connector->dev, |
| 1231 | closure->edid, timing, |
| 1232 | closure->quirks); |
| 1233 | if (!newmode) |
| 1234 | return; |
| 1235 | |
| 1236 | if (closure->preferred) |
| 1237 | newmode->type |= DRM_MODE_TYPE_PREFERRED; |
| 1238 | |
| 1239 | drm_mode_probed_add(closure->connector, newmode); |
| 1240 | closure->modes++; |
| 1241 | closure->preferred = 0; |
| 1242 | } |
| 1243 | } |
| 1244 | |
| 1245 | /* |
| 1246 | * add_detailed_modes - Add modes from detailed timings |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1247 | * @connector: attached connector |
| 1248 | * @edid: EDID block to scan |
| 1249 | * @quirks: quirks to apply |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1250 | */ |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1251 | static int |
| 1252 | add_detailed_modes(struct drm_connector *connector, struct edid *edid, |
| 1253 | u32 quirks) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1254 | { |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1255 | struct detailed_mode_closure closure = { |
| 1256 | connector, |
| 1257 | edid, |
| 1258 | 1, |
| 1259 | quirks, |
| 1260 | 0 |
| 1261 | }; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1262 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1263 | if (closure.preferred && !version_greater(edid, 1, 3)) |
| 1264 | closure.preferred = |
| 1265 | (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING); |
Adam Jackson | a327f6b | 2010-03-29 21:43:25 +0000 | [diff] [blame] | 1266 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1267 | drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1268 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1269 | return closure.modes; |
Zhao Yakui | 882f021 | 2009-08-26 18:20:49 +0800 | [diff] [blame] | 1270 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1271 | |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1272 | #define HDMI_IDENTIFIER 0x000C03 |
| 1273 | #define VENDOR_BLOCK 0x03 |
| 1274 | /** |
| 1275 | * drm_detect_hdmi_monitor - detect whether monitor is hdmi. |
| 1276 | * @edid: monitor EDID information |
| 1277 | * |
| 1278 | * Parse the CEA extension according to CEA-861-B. |
| 1279 | * Return true if HDMI, false if not or unknown. |
| 1280 | */ |
| 1281 | bool drm_detect_hdmi_monitor(struct edid *edid) |
| 1282 | { |
| 1283 | char *edid_ext = NULL; |
Adam Jackson | 7466f4c | 2010-03-29 21:43:23 +0000 | [diff] [blame] | 1284 | int i, hdmi_id; |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1285 | int start_offset, end_offset; |
| 1286 | bool is_hdmi = false; |
| 1287 | |
| 1288 | /* No EDID or EDID extensions */ |
| 1289 | if (edid == NULL || edid->extensions == 0) |
| 1290 | goto end; |
| 1291 | |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1292 | /* Find CEA extension */ |
Adam Jackson | 7466f4c | 2010-03-29 21:43:23 +0000 | [diff] [blame] | 1293 | for (i = 0; i < edid->extensions; i++) { |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1294 | edid_ext = (char *)edid + EDID_LENGTH * (i + 1); |
| 1295 | /* This block is CEA extension */ |
| 1296 | if (edid_ext[0] == 0x02) |
| 1297 | break; |
| 1298 | } |
| 1299 | |
Adam Jackson | 7466f4c | 2010-03-29 21:43:23 +0000 | [diff] [blame] | 1300 | if (i == edid->extensions) |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1301 | goto end; |
| 1302 | |
| 1303 | /* Data block offset in CEA extension block */ |
| 1304 | start_offset = 4; |
| 1305 | end_offset = edid_ext[2]; |
| 1306 | |
| 1307 | /* |
| 1308 | * Because HDMI identifier is in Vendor Specific Block, |
| 1309 | * search it from all data blocks of CEA extension. |
| 1310 | */ |
| 1311 | for (i = start_offset; i < end_offset; |
| 1312 | /* Increased by data block len */ |
| 1313 | i += ((edid_ext[i] & 0x1f) + 1)) { |
| 1314 | /* Find vendor specific block */ |
| 1315 | if ((edid_ext[i] >> 5) == VENDOR_BLOCK) { |
| 1316 | hdmi_id = edid_ext[i + 1] | (edid_ext[i + 2] << 8) | |
| 1317 | edid_ext[i + 3] << 16; |
| 1318 | /* Find HDMI identifier */ |
| 1319 | if (hdmi_id == HDMI_IDENTIFIER) |
| 1320 | is_hdmi = true; |
| 1321 | break; |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | end: |
| 1326 | return is_hdmi; |
| 1327 | } |
| 1328 | EXPORT_SYMBOL(drm_detect_hdmi_monitor); |
| 1329 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1330 | /** |
| 1331 | * drm_add_edid_modes - add modes from EDID data, if available |
| 1332 | * @connector: connector we're probing |
| 1333 | * @edid: edid data |
| 1334 | * |
| 1335 | * Add the specified modes to the connector's mode list. |
| 1336 | * |
| 1337 | * Return number of modes added or 0 if we couldn't find any. |
| 1338 | */ |
| 1339 | int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid) |
| 1340 | { |
| 1341 | int num_modes = 0; |
| 1342 | u32 quirks; |
| 1343 | |
| 1344 | if (edid == NULL) { |
| 1345 | return 0; |
| 1346 | } |
Alex Deucher | 3c53788 | 2010-02-05 04:21:19 -0500 | [diff] [blame] | 1347 | if (!drm_edid_is_valid(edid)) { |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 1348 | dev_warn(connector->dev->dev, "%s: EDID invalid.\n", |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1349 | drm_get_connector_name(connector)); |
| 1350 | return 0; |
| 1351 | } |
| 1352 | |
| 1353 | quirks = edid_get_quirks(edid); |
| 1354 | |
Adam Jackson | c867df7 | 2010-03-29 21:43:21 +0000 | [diff] [blame] | 1355 | /* |
| 1356 | * EDID spec says modes should be preferred in this order: |
| 1357 | * - preferred detailed mode |
| 1358 | * - other detailed modes from base block |
| 1359 | * - detailed modes from extension blocks |
| 1360 | * - CVT 3-byte code modes |
| 1361 | * - standard timing codes |
| 1362 | * - established timing codes |
| 1363 | * - modes inferred from GTF or CVT range information |
| 1364 | * |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1365 | * We get this pretty much right. |
Adam Jackson | c867df7 | 2010-03-29 21:43:21 +0000 | [diff] [blame] | 1366 | * |
| 1367 | * XXX order for additional mode types in extension blocks? |
| 1368 | */ |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1369 | num_modes += add_detailed_modes(connector, edid, quirks); |
| 1370 | num_modes += add_cvt_modes(connector, edid); |
Adam Jackson | c867df7 | 2010-03-29 21:43:21 +0000 | [diff] [blame] | 1371 | num_modes += add_standard_modes(connector, edid); |
| 1372 | num_modes += add_established_modes(connector, edid); |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1373 | num_modes += add_inferred_modes(connector, edid); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1374 | |
| 1375 | if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75)) |
| 1376 | edid_fixup_preferred(connector, quirks); |
| 1377 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1378 | connector->display_info.width_mm = edid->width_cm * 10; |
| 1379 | connector->display_info.height_mm = edid->height_cm * 10; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1380 | |
| 1381 | return num_modes; |
| 1382 | } |
| 1383 | EXPORT_SYMBOL(drm_add_edid_modes); |
Zhao Yakui | f0fda0a | 2009-09-03 09:33:48 +0800 | [diff] [blame] | 1384 | |
| 1385 | /** |
| 1386 | * drm_add_modes_noedid - add modes for the connectors without EDID |
| 1387 | * @connector: connector we're probing |
| 1388 | * @hdisplay: the horizontal display limit |
| 1389 | * @vdisplay: the vertical display limit |
| 1390 | * |
| 1391 | * Add the specified modes to the connector's mode list. Only when the |
| 1392 | * hdisplay/vdisplay is not beyond the given limit, it will be added. |
| 1393 | * |
| 1394 | * Return number of modes added or 0 if we couldn't find any. |
| 1395 | */ |
| 1396 | int drm_add_modes_noedid(struct drm_connector *connector, |
| 1397 | int hdisplay, int vdisplay) |
| 1398 | { |
| 1399 | int i, count, num_modes = 0; |
| 1400 | struct drm_display_mode *mode, *ptr; |
| 1401 | struct drm_device *dev = connector->dev; |
| 1402 | |
| 1403 | count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode); |
| 1404 | if (hdisplay < 0) |
| 1405 | hdisplay = 0; |
| 1406 | if (vdisplay < 0) |
| 1407 | vdisplay = 0; |
| 1408 | |
| 1409 | for (i = 0; i < count; i++) { |
| 1410 | ptr = &drm_dmt_modes[i]; |
| 1411 | if (hdisplay && vdisplay) { |
| 1412 | /* |
| 1413 | * Only when two are valid, they will be used to check |
| 1414 | * whether the mode should be added to the mode list of |
| 1415 | * the connector. |
| 1416 | */ |
| 1417 | if (ptr->hdisplay > hdisplay || |
| 1418 | ptr->vdisplay > vdisplay) |
| 1419 | continue; |
| 1420 | } |
Adam Jackson | f985ded | 2009-11-23 14:23:04 -0500 | [diff] [blame] | 1421 | if (drm_mode_vrefresh(ptr) > 61) |
| 1422 | continue; |
Zhao Yakui | f0fda0a | 2009-09-03 09:33:48 +0800 | [diff] [blame] | 1423 | mode = drm_mode_duplicate(dev, ptr); |
| 1424 | if (mode) { |
| 1425 | drm_mode_probed_add(connector, mode); |
| 1426 | num_modes++; |
| 1427 | } |
| 1428 | } |
| 1429 | return num_modes; |
| 1430 | } |
| 1431 | EXPORT_SYMBOL(drm_add_modes_noedid); |