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> |
Adam Jackson | 47819ba | 2012-05-30 16:42:39 -0400 | [diff] [blame] | 33 | #include <linux/module.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 34 | #include <drm/drmP.h> |
| 35 | #include <drm/drm_edid.h> |
Adam Jackson | 38fcbb6 | 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))) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 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) |
Adam Jackson | bc42aab | 2012-05-23 16:26:54 -0400 | [diff] [blame] | 69 | /* Force reduced-blanking timings for detailed modes */ |
| 70 | #define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7) |
Alex Deucher | 3c53788 | 2010-02-05 04:21:19 -0500 | [diff] [blame] | 71 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 72 | struct detailed_mode_closure { |
| 73 | struct drm_connector *connector; |
| 74 | struct edid *edid; |
| 75 | bool preferred; |
| 76 | u32 quirks; |
| 77 | int modes; |
| 78 | }; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 79 | |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 80 | #define LEVEL_DMT 0 |
| 81 | #define LEVEL_GTF 1 |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 82 | #define LEVEL_GTF2 2 |
| 83 | #define LEVEL_CVT 3 |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 84 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 85 | static struct edid_quirk { |
Ian Pilcher | c51a3fd6 | 2012-04-22 11:40:26 -0500 | [diff] [blame] | 86 | char vendor[4]; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 87 | int product_id; |
| 88 | u32 quirks; |
| 89 | } edid_quirk_list[] = { |
| 90 | /* Acer AL1706 */ |
| 91 | { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 }, |
| 92 | /* Acer F51 */ |
| 93 | { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 }, |
| 94 | /* Unknown Acer */ |
| 95 | { "ACR", 2423, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
| 96 | |
| 97 | /* Belinea 10 15 55 */ |
| 98 | { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, |
| 99 | { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 }, |
| 100 | |
| 101 | /* Envision Peripherals, Inc. EN-7100e */ |
| 102 | { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH }, |
Adam Jackson | ba1163d | 2010-04-06 16:11:00 +0000 | [diff] [blame] | 103 | /* Envision EN2028 */ |
| 104 | { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 }, |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 105 | |
| 106 | /* Funai Electronics PM36B */ |
| 107 | { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 | |
| 108 | EDID_QUIRK_DETAILED_IN_CM }, |
| 109 | |
| 110 | /* LG Philips LCD LP154W01-A5 */ |
| 111 | { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, |
| 112 | { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, |
| 113 | |
| 114 | /* Philips 107p5 CRT */ |
| 115 | { "PHL", 57364, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
| 116 | |
| 117 | /* Proview AY765C */ |
| 118 | { "PTS", 765, EDID_QUIRK_FIRST_DETAILED_PREFERRED }, |
| 119 | |
| 120 | /* Samsung SyncMaster 205BW. Note: irony */ |
| 121 | { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP }, |
| 122 | /* Samsung SyncMaster 22[5-6]BW */ |
| 123 | { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 }, |
| 124 | { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 }, |
Adam Jackson | bc42aab | 2012-05-23 16:26:54 -0400 | [diff] [blame] | 125 | |
| 126 | /* ViewSonic VA2026w */ |
| 127 | { "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING }, |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 128 | }; |
| 129 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 130 | /*** DDC fetch and block validation ***/ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 131 | |
Adam Jackson | 083ae05 | 2009-09-23 17:30:45 -0400 | [diff] [blame] | 132 | static const u8 edid_header[] = { |
| 133 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 |
| 134 | }; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 135 | |
Thomas Reim | 051963d | 2011-07-29 14:28:57 +0000 | [diff] [blame] | 136 | /* |
| 137 | * Sanity check the header of the base EDID block. Return 8 if the header |
| 138 | * is perfect, down to 0 if it's totally wrong. |
| 139 | */ |
| 140 | int drm_edid_header_is_valid(const u8 *raw_edid) |
| 141 | { |
| 142 | int i, score = 0; |
| 143 | |
| 144 | for (i = 0; i < sizeof(edid_header); i++) |
| 145 | if (raw_edid[i] == edid_header[i]) |
| 146 | score++; |
| 147 | |
| 148 | return score; |
| 149 | } |
| 150 | EXPORT_SYMBOL(drm_edid_header_is_valid); |
| 151 | |
Adam Jackson | 47819ba | 2012-05-30 16:42:39 -0400 | [diff] [blame] | 152 | static int edid_fixup __read_mostly = 6; |
| 153 | module_param_named(edid_fixup, edid_fixup, int, 0400); |
| 154 | MODULE_PARM_DESC(edid_fixup, |
| 155 | "Minimum number of valid EDID header bytes (0-8, default 6)"); |
Thomas Reim | 051963d | 2011-07-29 14:28:57 +0000 | [diff] [blame] | 156 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 157 | /* |
| 158 | * Sanity check the EDID block (base or extension). Return 0 if the block |
| 159 | * doesn't check out, or 1 if it's valid. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 160 | */ |
Jerome Glisse | 0b2443e | 2012-08-09 11:25:51 -0400 | [diff] [blame] | 161 | bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 162 | { |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 163 | int i; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 164 | u8 csum = 0; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 165 | struct edid *edid = (struct edid *)raw_edid; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 166 | |
Adam Jackson | 47819ba | 2012-05-30 16:42:39 -0400 | [diff] [blame] | 167 | if (edid_fixup > 8 || edid_fixup < 0) |
| 168 | edid_fixup = 6; |
| 169 | |
Adam Jackson | f89ec8a | 2012-04-16 10:40:08 -0400 | [diff] [blame] | 170 | if (block == 0) { |
Thomas Reim | 051963d | 2011-07-29 14:28:57 +0000 | [diff] [blame] | 171 | int score = drm_edid_header_is_valid(raw_edid); |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 172 | if (score == 8) ; |
Adam Jackson | 47819ba | 2012-05-30 16:42:39 -0400 | [diff] [blame] | 173 | else if (score >= edid_fixup) { |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 174 | DRM_DEBUG("Fixing EDID header, your hardware may be failing\n"); |
| 175 | memcpy(raw_edid, edid_header, sizeof(edid_header)); |
| 176 | } else { |
| 177 | goto bad; |
| 178 | } |
| 179 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 180 | |
| 181 | for (i = 0; i < EDID_LENGTH; i++) |
| 182 | csum += raw_edid[i]; |
| 183 | if (csum) { |
Jerome Glisse | 0b2443e | 2012-08-09 11:25:51 -0400 | [diff] [blame] | 184 | if (print_bad_edid) { |
| 185 | DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum); |
| 186 | } |
Adam Jackson | 4a638b4 | 2010-05-25 16:33:09 -0400 | [diff] [blame] | 187 | |
| 188 | /* allow CEA to slide through, switches mangle this */ |
| 189 | if (raw_edid[0] != 0x02) |
| 190 | goto bad; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 191 | } |
| 192 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 193 | /* per-block-type checks */ |
| 194 | switch (raw_edid[0]) { |
| 195 | case 0: /* base */ |
| 196 | if (edid->version != 1) { |
| 197 | DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version); |
| 198 | goto bad; |
| 199 | } |
Adam Jackson | 862b89c | 2009-11-23 14:23:06 -0500 | [diff] [blame] | 200 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 201 | if (edid->revision > 4) |
| 202 | DRM_DEBUG("EDID minor > 4, assuming backward compatibility\n"); |
| 203 | break; |
| 204 | |
| 205 | default: |
| 206 | break; |
| 207 | } |
Adam Jackson | 47ee4ccf | 2009-11-23 14:23:05 -0500 | [diff] [blame] | 208 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 209 | return 1; |
| 210 | |
| 211 | bad: |
Jerome Glisse | 0b2443e | 2012-08-09 11:25:51 -0400 | [diff] [blame] | 212 | if (raw_edid && print_bad_edid) { |
Dave Airlie | f49dadb | 2011-06-14 06:13:54 +0000 | [diff] [blame] | 213 | printk(KERN_ERR "Raw EDID:\n"); |
Tormod Volden | 0aff47f | 2011-07-05 20:12:53 +0000 | [diff] [blame] | 214 | print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1, |
| 215 | raw_edid, EDID_LENGTH, false); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 216 | } |
| 217 | return 0; |
| 218 | } |
Carsten Emde | da0df92 | 2012-03-18 22:37:33 +0100 | [diff] [blame] | 219 | EXPORT_SYMBOL(drm_edid_block_valid); |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 220 | |
| 221 | /** |
| 222 | * drm_edid_is_valid - sanity check EDID data |
| 223 | * @edid: EDID data |
| 224 | * |
| 225 | * Sanity-check an entire EDID record (including extensions) |
| 226 | */ |
| 227 | bool drm_edid_is_valid(struct edid *edid) |
| 228 | { |
| 229 | int i; |
| 230 | u8 *raw = (u8 *)edid; |
| 231 | |
| 232 | if (!edid) |
| 233 | return false; |
| 234 | |
| 235 | for (i = 0; i <= edid->extensions; i++) |
Jerome Glisse | 0b2443e | 2012-08-09 11:25:51 -0400 | [diff] [blame] | 236 | if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i, true)) |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 237 | return false; |
| 238 | |
| 239 | return true; |
| 240 | } |
Alex Deucher | 3c53788 | 2010-02-05 04:21:19 -0500 | [diff] [blame] | 241 | EXPORT_SYMBOL(drm_edid_is_valid); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 242 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 243 | #define DDC_SEGMENT_ADDR 0x30 |
| 244 | /** |
| 245 | * Get EDID information via I2C. |
| 246 | * |
| 247 | * \param adapter : i2c device adaptor |
| 248 | * \param buf : EDID data buffer to be filled |
| 249 | * \param len : EDID data buffer length |
| 250 | * \return 0 on success or -1 on failure. |
| 251 | * |
| 252 | * Try to fetch EDID information by calling i2c driver function. |
| 253 | */ |
| 254 | static int |
| 255 | drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf, |
| 256 | int block, int len) |
| 257 | { |
| 258 | unsigned char start = block * EDID_LENGTH; |
Shirish S | cd004b3 | 2012-08-30 07:04:06 +0000 | [diff] [blame] | 259 | unsigned char segment = block >> 1; |
| 260 | unsigned char xfers = segment ? 3 : 2; |
Chris Wilson | 4819d2e | 2011-03-15 11:04:41 +0000 | [diff] [blame] | 261 | int ret, retries = 5; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 262 | |
Chris Wilson | 4819d2e | 2011-03-15 11:04:41 +0000 | [diff] [blame] | 263 | /* The core i2c driver will automatically retry the transfer if the |
| 264 | * adapter reports EAGAIN. However, we find that bit-banging transfers |
| 265 | * are susceptible to errors under a heavily loaded machine and |
| 266 | * generate spurious NAKs and timeouts. Retrying the transfer |
| 267 | * of the individual block a few times seems to overcome this. |
| 268 | */ |
| 269 | do { |
| 270 | struct i2c_msg msgs[] = { |
| 271 | { |
Shirish S | cd004b3 | 2012-08-30 07:04:06 +0000 | [diff] [blame] | 272 | .addr = DDC_SEGMENT_ADDR, |
| 273 | .flags = 0, |
| 274 | .len = 1, |
| 275 | .buf = &segment, |
| 276 | }, { |
Chris Wilson | 4819d2e | 2011-03-15 11:04:41 +0000 | [diff] [blame] | 277 | .addr = DDC_ADDR, |
| 278 | .flags = 0, |
| 279 | .len = 1, |
| 280 | .buf = &start, |
| 281 | }, { |
| 282 | .addr = DDC_ADDR, |
| 283 | .flags = I2C_M_RD, |
| 284 | .len = len, |
| 285 | .buf = buf, |
| 286 | } |
| 287 | }; |
Shirish S | cd004b3 | 2012-08-30 07:04:06 +0000 | [diff] [blame] | 288 | |
| 289 | /* |
| 290 | * Avoid sending the segment addr to not upset non-compliant ddc |
| 291 | * monitors. |
| 292 | */ |
| 293 | ret = i2c_transfer(adapter, &msgs[3 - xfers], xfers); |
| 294 | |
Eugeni Dodonov | 9292f37 | 2012-01-05 09:34:28 -0200 | [diff] [blame] | 295 | if (ret == -ENXIO) { |
| 296 | DRM_DEBUG_KMS("drm: skipping non-existent adapter %s\n", |
| 297 | adapter->name); |
| 298 | break; |
| 299 | } |
Shirish S | cd004b3 | 2012-08-30 07:04:06 +0000 | [diff] [blame] | 300 | } while (ret != xfers && --retries); |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 301 | |
Shirish S | cd004b3 | 2012-08-30 07:04:06 +0000 | [diff] [blame] | 302 | return ret == xfers ? 0 : -1; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 303 | } |
| 304 | |
Dave Airlie | 4a9a8b7 | 2011-06-14 06:13:55 +0000 | [diff] [blame] | 305 | static bool drm_edid_is_zero(u8 *in_edid, int length) |
| 306 | { |
Akinobu Mita | 6311803 | 2012-11-09 12:10:42 +0000 | [diff] [blame] | 307 | if (memchr_inv(in_edid, 0, length)) |
| 308 | return false; |
Dave Airlie | 4a9a8b7 | 2011-06-14 06:13:55 +0000 | [diff] [blame] | 309 | |
Dave Airlie | 4a9a8b7 | 2011-06-14 06:13:55 +0000 | [diff] [blame] | 310 | return true; |
| 311 | } |
| 312 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 313 | static u8 * |
| 314 | drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter) |
| 315 | { |
Sam Tygier | 0ea75e2 | 2010-09-23 10:11:01 +0100 | [diff] [blame] | 316 | int i, j = 0, valid_extensions = 0; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 317 | u8 *block, *new; |
Jerome Glisse | 0b2443e | 2012-08-09 11:25:51 -0400 | [diff] [blame] | 318 | bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS); |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 319 | |
| 320 | if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL) |
| 321 | return NULL; |
| 322 | |
| 323 | /* base block fetch */ |
| 324 | for (i = 0; i < 4; i++) { |
| 325 | if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH)) |
| 326 | goto out; |
Jerome Glisse | 0b2443e | 2012-08-09 11:25:51 -0400 | [diff] [blame] | 327 | if (drm_edid_block_valid(block, 0, print_bad_edid)) |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 328 | break; |
Dave Airlie | 4a9a8b7 | 2011-06-14 06:13:55 +0000 | [diff] [blame] | 329 | if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) { |
| 330 | connector->null_edid_counter++; |
| 331 | goto carp; |
| 332 | } |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 333 | } |
| 334 | if (i == 4) |
| 335 | goto carp; |
| 336 | |
| 337 | /* if there's no extensions, we're done */ |
| 338 | if (block[0x7e] == 0) |
| 339 | return block; |
| 340 | |
| 341 | new = krealloc(block, (block[0x7e] + 1) * EDID_LENGTH, GFP_KERNEL); |
| 342 | if (!new) |
| 343 | goto out; |
| 344 | block = new; |
| 345 | |
| 346 | for (j = 1; j <= block[0x7e]; j++) { |
| 347 | for (i = 0; i < 4; i++) { |
Sam Tygier | 0ea75e2 | 2010-09-23 10:11:01 +0100 | [diff] [blame] | 348 | if (drm_do_probe_ddc_edid(adapter, |
| 349 | block + (valid_extensions + 1) * EDID_LENGTH, |
| 350 | j, EDID_LENGTH)) |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 351 | goto out; |
Jerome Glisse | 0b2443e | 2012-08-09 11:25:51 -0400 | [diff] [blame] | 352 | if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j, print_bad_edid)) { |
Sam Tygier | 0ea75e2 | 2010-09-23 10:11:01 +0100 | [diff] [blame] | 353 | valid_extensions++; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 354 | break; |
Sam Tygier | 0ea75e2 | 2010-09-23 10:11:01 +0100 | [diff] [blame] | 355 | } |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 356 | } |
Maarten Lankhorst | f934ec8c | 2013-01-29 14:27:39 +0100 | [diff] [blame] | 357 | |
| 358 | if (i == 4 && print_bad_edid) { |
Sam Tygier | 0ea75e2 | 2010-09-23 10:11:01 +0100 | [diff] [blame] | 359 | dev_warn(connector->dev->dev, |
| 360 | "%s: Ignoring invalid EDID block %d.\n", |
| 361 | drm_get_connector_name(connector), j); |
Maarten Lankhorst | f934ec8c | 2013-01-29 14:27:39 +0100 | [diff] [blame] | 362 | |
| 363 | connector->bad_edid_counter++; |
| 364 | } |
Sam Tygier | 0ea75e2 | 2010-09-23 10:11:01 +0100 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | if (valid_extensions != block[0x7e]) { |
| 368 | block[EDID_LENGTH-1] += block[0x7e] - valid_extensions; |
| 369 | block[0x7e] = valid_extensions; |
| 370 | new = krealloc(block, (valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL); |
| 371 | if (!new) |
| 372 | goto out; |
| 373 | block = new; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | return block; |
| 377 | |
| 378 | carp: |
Jerome Glisse | 0b2443e | 2012-08-09 11:25:51 -0400 | [diff] [blame] | 379 | if (print_bad_edid) { |
| 380 | dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n", |
| 381 | drm_get_connector_name(connector), j); |
| 382 | } |
| 383 | connector->bad_edid_counter++; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 384 | |
| 385 | out: |
| 386 | kfree(block); |
| 387 | return NULL; |
| 388 | } |
| 389 | |
| 390 | /** |
| 391 | * Probe DDC presence. |
| 392 | * |
| 393 | * \param adapter : i2c device adaptor |
| 394 | * \return 1 on success |
| 395 | */ |
Adam Jackson | fbff469 | 2012-09-18 10:58:47 -0400 | [diff] [blame] | 396 | bool |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 397 | drm_probe_ddc(struct i2c_adapter *adapter) |
| 398 | { |
| 399 | unsigned char out; |
| 400 | |
| 401 | return (drm_do_probe_ddc_edid(adapter, &out, 0, 1) == 0); |
| 402 | } |
Adam Jackson | fbff469 | 2012-09-18 10:58:47 -0400 | [diff] [blame] | 403 | EXPORT_SYMBOL(drm_probe_ddc); |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 404 | |
| 405 | /** |
| 406 | * drm_get_edid - get EDID data, if available |
| 407 | * @connector: connector we're probing |
| 408 | * @adapter: i2c adapter to use for DDC |
| 409 | * |
| 410 | * Poke the given i2c channel to grab EDID data if possible. If found, |
| 411 | * attach it to the connector. |
| 412 | * |
| 413 | * Return edid data or NULL if we couldn't find any. |
| 414 | */ |
| 415 | struct edid *drm_get_edid(struct drm_connector *connector, |
| 416 | struct i2c_adapter *adapter) |
| 417 | { |
| 418 | struct edid *edid = NULL; |
| 419 | |
| 420 | if (drm_probe_ddc(adapter)) |
| 421 | edid = (struct edid *)drm_do_get_edid(connector, adapter); |
| 422 | |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 423 | return edid; |
Adam Jackson | 61e57a8 | 2010-03-29 21:43:18 +0000 | [diff] [blame] | 424 | } |
| 425 | EXPORT_SYMBOL(drm_get_edid); |
| 426 | |
| 427 | /*** EDID parsing ***/ |
| 428 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 429 | /** |
| 430 | * edid_vendor - match a string against EDID's obfuscated vendor field |
| 431 | * @edid: EDID to match |
| 432 | * @vendor: vendor string |
| 433 | * |
| 434 | * Returns true if @vendor is in @edid, false otherwise |
| 435 | */ |
| 436 | static bool edid_vendor(struct edid *edid, char *vendor) |
| 437 | { |
| 438 | char edid_vendor[3]; |
| 439 | |
| 440 | edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@'; |
| 441 | edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) | |
| 442 | ((edid->mfg_id[1] & 0xe0) >> 5)) + '@'; |
Dave Airlie | 16456c8 | 2009-04-03 09:10:33 +1000 | [diff] [blame] | 443 | edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@'; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 444 | |
| 445 | return !strncmp(edid_vendor, vendor, 3); |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * edid_get_quirks - return quirk flags for a given EDID |
| 450 | * @edid: EDID to process |
| 451 | * |
| 452 | * This tells subsequent routines what fixes they need to apply. |
| 453 | */ |
| 454 | static u32 edid_get_quirks(struct edid *edid) |
| 455 | { |
| 456 | struct edid_quirk *quirk; |
| 457 | int i; |
| 458 | |
| 459 | for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) { |
| 460 | quirk = &edid_quirk_list[i]; |
| 461 | |
| 462 | if (edid_vendor(edid, quirk->vendor) && |
| 463 | (EDID_PRODUCT_ID(edid) == quirk->product_id)) |
| 464 | return quirk->quirks; |
| 465 | } |
| 466 | |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | #define MODE_SIZE(m) ((m)->hdisplay * (m)->vdisplay) |
| 471 | #define MODE_REFRESH_DIFF(m,r) (abs((m)->vrefresh - target_refresh)) |
| 472 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 473 | /** |
| 474 | * edid_fixup_preferred - set preferred modes based on quirk list |
| 475 | * @connector: has mode list to fix up |
| 476 | * @quirks: quirks list |
| 477 | * |
| 478 | * Walk the mode list for @connector, clearing the preferred status |
| 479 | * on existing modes and setting it anew for the right mode ala @quirks. |
| 480 | */ |
| 481 | static void edid_fixup_preferred(struct drm_connector *connector, |
| 482 | u32 quirks) |
| 483 | { |
| 484 | struct drm_display_mode *t, *cur_mode, *preferred_mode; |
Dave Airlie | f890607 | 2008-12-18 16:59:02 +1000 | [diff] [blame] | 485 | int target_refresh = 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 486 | |
| 487 | if (list_empty(&connector->probed_modes)) |
| 488 | return; |
| 489 | |
| 490 | if (quirks & EDID_QUIRK_PREFER_LARGE_60) |
| 491 | target_refresh = 60; |
| 492 | if (quirks & EDID_QUIRK_PREFER_LARGE_75) |
| 493 | target_refresh = 75; |
| 494 | |
| 495 | preferred_mode = list_first_entry(&connector->probed_modes, |
| 496 | struct drm_display_mode, head); |
| 497 | |
| 498 | list_for_each_entry_safe(cur_mode, t, &connector->probed_modes, head) { |
| 499 | cur_mode->type &= ~DRM_MODE_TYPE_PREFERRED; |
| 500 | |
| 501 | if (cur_mode == preferred_mode) |
| 502 | continue; |
| 503 | |
| 504 | /* Largest mode is preferred */ |
| 505 | if (MODE_SIZE(cur_mode) > MODE_SIZE(preferred_mode)) |
| 506 | preferred_mode = cur_mode; |
| 507 | |
| 508 | /* At a given size, try to get closest to target refresh */ |
| 509 | if ((MODE_SIZE(cur_mode) == MODE_SIZE(preferred_mode)) && |
| 510 | MODE_REFRESH_DIFF(cur_mode, target_refresh) < |
| 511 | MODE_REFRESH_DIFF(preferred_mode, target_refresh)) { |
| 512 | preferred_mode = cur_mode; |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | preferred_mode->type |= DRM_MODE_TYPE_PREFERRED; |
| 517 | } |
| 518 | |
Adam Jackson | f6e252b | 2012-04-13 16:33:31 -0400 | [diff] [blame] | 519 | static bool |
| 520 | mode_is_rb(const struct drm_display_mode *mode) |
| 521 | { |
| 522 | return (mode->htotal - mode->hdisplay == 160) && |
| 523 | (mode->hsync_end - mode->hdisplay == 80) && |
| 524 | (mode->hsync_end - mode->hsync_start == 32) && |
| 525 | (mode->vsync_start - mode->vdisplay == 3); |
| 526 | } |
| 527 | |
Adam Jackson | 33c7531 | 2012-04-13 16:33:29 -0400 | [diff] [blame] | 528 | /* |
| 529 | * drm_mode_find_dmt - Create a copy of a mode if present in DMT |
| 530 | * @dev: Device to duplicate against |
| 531 | * @hsize: Mode width |
| 532 | * @vsize: Mode height |
| 533 | * @fresh: Mode refresh rate |
Adam Jackson | f6e252b | 2012-04-13 16:33:31 -0400 | [diff] [blame] | 534 | * @rb: Mode reduced-blanking-ness |
Adam Jackson | 33c7531 | 2012-04-13 16:33:29 -0400 | [diff] [blame] | 535 | * |
| 536 | * Walk the DMT mode list looking for a match for the given parameters. |
| 537 | * Return a newly allocated copy of the mode, or NULL if not found. |
| 538 | */ |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 539 | struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, |
Adam Jackson | f6e252b | 2012-04-13 16:33:31 -0400 | [diff] [blame] | 540 | int hsize, int vsize, int fresh, |
| 541 | bool rb) |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 542 | { |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 543 | int i; |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 544 | |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 545 | for (i = 0; i < drm_num_dmt_modes; i++) { |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 546 | const struct drm_display_mode *ptr = &drm_dmt_modes[i]; |
Adam Jackson | f8b46a0 | 2012-04-13 16:33:30 -0400 | [diff] [blame] | 547 | if (hsize != ptr->hdisplay) |
| 548 | continue; |
| 549 | if (vsize != ptr->vdisplay) |
| 550 | continue; |
| 551 | if (fresh != drm_mode_vrefresh(ptr)) |
| 552 | continue; |
Adam Jackson | f6e252b | 2012-04-13 16:33:31 -0400 | [diff] [blame] | 553 | if (rb != mode_is_rb(ptr)) |
| 554 | continue; |
Adam Jackson | f8b46a0 | 2012-04-13 16:33:30 -0400 | [diff] [blame] | 555 | |
| 556 | return drm_mode_duplicate(dev, ptr); |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 557 | } |
Adam Jackson | f8b46a0 | 2012-04-13 16:33:30 -0400 | [diff] [blame] | 558 | |
| 559 | return NULL; |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 560 | } |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 561 | EXPORT_SYMBOL(drm_mode_find_dmt); |
Adam Jackson | 23425ca | 2009-09-23 17:30:58 -0400 | [diff] [blame] | 562 | |
Adam Jackson | d1ff640 | 2010-03-29 21:43:26 +0000 | [diff] [blame] | 563 | typedef void detailed_cb(struct detailed_timing *timing, void *closure); |
| 564 | |
| 565 | static void |
Adam Jackson | 4d76a22 | 2010-08-03 14:38:17 -0400 | [diff] [blame] | 566 | cea_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure) |
| 567 | { |
| 568 | int i, n = 0; |
Christian Schmidt | 4966b2a | 2011-12-19 20:03:43 +0100 | [diff] [blame] | 569 | u8 d = ext[0x02]; |
Adam Jackson | 4d76a22 | 2010-08-03 14:38:17 -0400 | [diff] [blame] | 570 | u8 *det_base = ext + d; |
| 571 | |
Christian Schmidt | 4966b2a | 2011-12-19 20:03:43 +0100 | [diff] [blame] | 572 | n = (127 - d) / 18; |
Adam Jackson | 4d76a22 | 2010-08-03 14:38:17 -0400 | [diff] [blame] | 573 | for (i = 0; i < n; i++) |
| 574 | cb((struct detailed_timing *)(det_base + 18 * i), closure); |
| 575 | } |
| 576 | |
| 577 | static void |
Adam Jackson | cbba98f | 2010-08-03 14:38:18 -0400 | [diff] [blame] | 578 | vtb_for_each_detailed_block(u8 *ext, detailed_cb *cb, void *closure) |
| 579 | { |
| 580 | unsigned int i, n = min((int)ext[0x02], 6); |
| 581 | u8 *det_base = ext + 5; |
| 582 | |
| 583 | if (ext[0x01] != 1) |
| 584 | return; /* unknown version */ |
| 585 | |
| 586 | for (i = 0; i < n; i++) |
| 587 | cb((struct detailed_timing *)(det_base + 18 * i), closure); |
| 588 | } |
| 589 | |
| 590 | static void |
Adam Jackson | d1ff640 | 2010-03-29 21:43:26 +0000 | [diff] [blame] | 591 | drm_for_each_detailed_block(u8 *raw_edid, detailed_cb *cb, void *closure) |
| 592 | { |
| 593 | int i; |
| 594 | struct edid *edid = (struct edid *)raw_edid; |
| 595 | |
| 596 | if (edid == NULL) |
| 597 | return; |
| 598 | |
| 599 | for (i = 0; i < EDID_DETAILED_TIMINGS; i++) |
| 600 | cb(&(edid->detailed_timings[i]), closure); |
| 601 | |
Adam Jackson | 4d76a22 | 2010-08-03 14:38:17 -0400 | [diff] [blame] | 602 | for (i = 1; i <= raw_edid[0x7e]; i++) { |
| 603 | u8 *ext = raw_edid + (i * EDID_LENGTH); |
| 604 | switch (*ext) { |
| 605 | case CEA_EXT: |
| 606 | cea_for_each_detailed_block(ext, cb, closure); |
| 607 | break; |
Adam Jackson | cbba98f | 2010-08-03 14:38:18 -0400 | [diff] [blame] | 608 | case VTB_EXT: |
| 609 | vtb_for_each_detailed_block(ext, cb, closure); |
| 610 | break; |
Adam Jackson | 4d76a22 | 2010-08-03 14:38:17 -0400 | [diff] [blame] | 611 | default: |
| 612 | break; |
| 613 | } |
| 614 | } |
Adam Jackson | d1ff640 | 2010-03-29 21:43:26 +0000 | [diff] [blame] | 615 | } |
| 616 | |
| 617 | static void |
| 618 | is_rb(struct detailed_timing *t, void *data) |
| 619 | { |
| 620 | u8 *r = (u8 *)t; |
| 621 | if (r[3] == EDID_DETAIL_MONITOR_RANGE) |
| 622 | if (r[15] & 0x10) |
| 623 | *(bool *)data = true; |
| 624 | } |
| 625 | |
| 626 | /* EDID 1.4 defines this explicitly. For EDID 1.3, we guess, badly. */ |
| 627 | static bool |
| 628 | drm_monitor_supports_rb(struct edid *edid) |
| 629 | { |
| 630 | if (edid->revision >= 4) { |
Daniel Vetter | b196a49 | 2012-06-19 11:33:06 +0200 | [diff] [blame] | 631 | bool ret = false; |
Adam Jackson | d1ff640 | 2010-03-29 21:43:26 +0000 | [diff] [blame] | 632 | drm_for_each_detailed_block((u8 *)edid, is_rb, &ret); |
| 633 | return ret; |
| 634 | } |
| 635 | |
| 636 | return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0); |
| 637 | } |
| 638 | |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 639 | static void |
| 640 | find_gtf2(struct detailed_timing *t, void *data) |
| 641 | { |
| 642 | u8 *r = (u8 *)t; |
| 643 | if (r[3] == EDID_DETAIL_MONITOR_RANGE && r[10] == 0x02) |
| 644 | *(u8 **)data = r; |
| 645 | } |
| 646 | |
| 647 | /* Secondary GTF curve kicks in above some break frequency */ |
| 648 | static int |
| 649 | drm_gtf2_hbreak(struct edid *edid) |
| 650 | { |
| 651 | u8 *r = NULL; |
| 652 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 653 | return r ? (r[12] * 2) : 0; |
| 654 | } |
| 655 | |
| 656 | static int |
| 657 | drm_gtf2_2c(struct edid *edid) |
| 658 | { |
| 659 | u8 *r = NULL; |
| 660 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 661 | return r ? r[13] : 0; |
| 662 | } |
| 663 | |
| 664 | static int |
| 665 | drm_gtf2_m(struct edid *edid) |
| 666 | { |
| 667 | u8 *r = NULL; |
| 668 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 669 | return r ? (r[15] << 8) + r[14] : 0; |
| 670 | } |
| 671 | |
| 672 | static int |
| 673 | drm_gtf2_k(struct edid *edid) |
| 674 | { |
| 675 | u8 *r = NULL; |
| 676 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 677 | return r ? r[16] : 0; |
| 678 | } |
| 679 | |
| 680 | static int |
| 681 | drm_gtf2_2j(struct edid *edid) |
| 682 | { |
| 683 | u8 *r = NULL; |
| 684 | drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r); |
| 685 | return r ? r[17] : 0; |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * standard_timing_level - get std. timing level(CVT/GTF/DMT) |
| 690 | * @edid: EDID block to scan |
| 691 | */ |
| 692 | static int standard_timing_level(struct edid *edid) |
| 693 | { |
| 694 | if (edid->revision >= 2) { |
| 695 | if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)) |
| 696 | return LEVEL_CVT; |
| 697 | if (drm_gtf2_hbreak(edid)) |
| 698 | return LEVEL_GTF2; |
| 699 | return LEVEL_GTF; |
| 700 | } |
| 701 | return LEVEL_DMT; |
| 702 | } |
| 703 | |
Adam Jackson | 23425ca | 2009-09-23 17:30:58 -0400 | [diff] [blame] | 704 | /* |
| 705 | * 0 is reserved. The spec says 0x01 fill for unused timings. Some old |
| 706 | * monitors fill with ascii space (0x20) instead. |
| 707 | */ |
| 708 | static int |
| 709 | bad_std_timing(u8 a, u8 b) |
| 710 | { |
| 711 | return (a == 0x00 && b == 0x00) || |
| 712 | (a == 0x01 && b == 0x01) || |
| 713 | (a == 0x20 && b == 0x20); |
| 714 | } |
| 715 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 716 | /** |
| 717 | * drm_mode_std - convert standard mode info (width, height, refresh) into mode |
| 718 | * @t: standard timing params |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 719 | * @timing_level: standard timing level |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 720 | * |
| 721 | * Take the standard timing params (in this case width, aspect, and refresh) |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 722 | * and convert them into a real mode using CVT/GTF/DMT. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 723 | */ |
Adam Jackson | 7ca6adb | 2010-03-29 21:43:29 +0000 | [diff] [blame] | 724 | static struct drm_display_mode * |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 725 | drm_mode_std(struct drm_connector *connector, struct edid *edid, |
| 726 | struct std_timing *t, int revision) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 727 | { |
Adam Jackson | 7ca6adb | 2010-03-29 21:43:29 +0000 | [diff] [blame] | 728 | struct drm_device *dev = connector->dev; |
| 729 | struct drm_display_mode *m, *mode = NULL; |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 730 | int hsize, vsize; |
| 731 | int vrefresh_rate; |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 732 | unsigned aspect_ratio = (t->vfreq_aspect & EDID_TIMING_ASPECT_MASK) |
| 733 | >> EDID_TIMING_ASPECT_SHIFT; |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 734 | unsigned vfreq = (t->vfreq_aspect & EDID_TIMING_VFREQ_MASK) |
| 735 | >> EDID_TIMING_VFREQ_SHIFT; |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 736 | int timing_level = standard_timing_level(edid); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 737 | |
Adam Jackson | 23425ca | 2009-09-23 17:30:58 -0400 | [diff] [blame] | 738 | if (bad_std_timing(t->hsize, t->vfreq_aspect)) |
| 739 | return NULL; |
| 740 | |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 741 | /* According to the EDID spec, the hdisplay = hsize * 8 + 248 */ |
| 742 | hsize = t->hsize * 8 + 248; |
| 743 | /* vrefresh_rate = vfreq + 60 */ |
| 744 | vrefresh_rate = vfreq + 60; |
| 745 | /* the vdisplay is calculated based on the aspect ratio */ |
Adam Jackson | f066a17 | 2009-09-23 17:31:21 -0400 | [diff] [blame] | 746 | if (aspect_ratio == 0) { |
| 747 | if (revision < 3) |
| 748 | vsize = hsize; |
| 749 | else |
| 750 | vsize = (hsize * 10) / 16; |
| 751 | } else if (aspect_ratio == 1) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 752 | vsize = (hsize * 3) / 4; |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 753 | else if (aspect_ratio == 2) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 754 | vsize = (hsize * 4) / 5; |
| 755 | else |
| 756 | vsize = (hsize * 9) / 16; |
Adam Jackson | a0910c8 | 2010-03-29 21:43:28 +0000 | [diff] [blame] | 757 | |
| 758 | /* HDTV hack, part 1 */ |
| 759 | if (vrefresh_rate == 60 && |
| 760 | ((hsize == 1360 && vsize == 765) || |
| 761 | (hsize == 1368 && vsize == 769))) { |
| 762 | hsize = 1366; |
| 763 | vsize = 768; |
| 764 | } |
| 765 | |
Adam Jackson | 7ca6adb | 2010-03-29 21:43:29 +0000 | [diff] [blame] | 766 | /* |
| 767 | * If this connector already has a mode for this size and refresh |
| 768 | * rate (because it came from detailed or CVT info), use that |
| 769 | * instead. This way we don't have to guess at interlace or |
| 770 | * reduced blanking. |
| 771 | */ |
Adam Jackson | 522032d | 2010-04-09 16:52:49 +0000 | [diff] [blame] | 772 | list_for_each_entry(m, &connector->probed_modes, head) |
Adam Jackson | 7ca6adb | 2010-03-29 21:43:29 +0000 | [diff] [blame] | 773 | if (m->hdisplay == hsize && m->vdisplay == vsize && |
| 774 | drm_mode_vrefresh(m) == vrefresh_rate) |
| 775 | return NULL; |
| 776 | |
Adam Jackson | a0910c8 | 2010-03-29 21:43:28 +0000 | [diff] [blame] | 777 | /* HDTV hack, part 2 */ |
| 778 | if (hsize == 1366 && vsize == 768 && vrefresh_rate == 60) { |
| 779 | mode = drm_cvt_mode(dev, 1366, 768, vrefresh_rate, 0, 0, |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 780 | false); |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 781 | mode->hdisplay = 1366; |
Adam Jackson | a4967de6 | 2010-07-28 07:40:32 +1000 | [diff] [blame] | 782 | mode->hsync_start = mode->hsync_start - 1; |
| 783 | mode->hsync_end = mode->hsync_end - 1; |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 784 | return mode; |
| 785 | } |
Adam Jackson | a0910c8 | 2010-03-29 21:43:28 +0000 | [diff] [blame] | 786 | |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 787 | /* check whether it can be found in default mode table */ |
Adam Jackson | f6e252b | 2012-04-13 16:33:31 -0400 | [diff] [blame] | 788 | if (drm_monitor_supports_rb(edid)) { |
| 789 | mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate, |
| 790 | true); |
| 791 | if (mode) |
| 792 | return mode; |
| 793 | } |
| 794 | mode = drm_mode_find_dmt(dev, hsize, vsize, vrefresh_rate, false); |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 795 | if (mode) |
| 796 | return mode; |
| 797 | |
Adam Jackson | f6e252b | 2012-04-13 16:33:31 -0400 | [diff] [blame] | 798 | /* okay, generate it */ |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 799 | switch (timing_level) { |
| 800 | case LEVEL_DMT: |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 801 | break; |
| 802 | case LEVEL_GTF: |
| 803 | mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0); |
| 804 | break; |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 805 | case LEVEL_GTF2: |
| 806 | /* |
| 807 | * This is potentially wrong if there's ever a monitor with |
| 808 | * more than one ranges section, each claiming a different |
| 809 | * secondary GTF curve. Please don't do that. |
| 810 | */ |
| 811 | mode = drm_gtf_mode(dev, hsize, vsize, vrefresh_rate, 0, 0); |
Takashi Iwai | fc48f16 | 2012-04-20 12:59:33 +0100 | [diff] [blame] | 812 | if (!mode) |
| 813 | return NULL; |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 814 | if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) { |
Sascha Hauer | aefd330 | 2012-02-01 11:38:21 +0100 | [diff] [blame] | 815 | drm_mode_destroy(dev, mode); |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 816 | mode = drm_gtf_mode_complex(dev, hsize, vsize, |
| 817 | vrefresh_rate, 0, 0, |
| 818 | drm_gtf2_m(edid), |
| 819 | drm_gtf2_2c(edid), |
| 820 | drm_gtf2_k(edid), |
| 821 | drm_gtf2_2j(edid)); |
| 822 | } |
| 823 | break; |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 824 | case LEVEL_CVT: |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 825 | mode = drm_cvt_mode(dev, hsize, vsize, vrefresh_rate, 0, 0, |
| 826 | false); |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 827 | break; |
| 828 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 829 | return mode; |
| 830 | } |
| 831 | |
Adam Jackson | b58db2c | 2010-02-15 22:15:39 +0000 | [diff] [blame] | 832 | /* |
| 833 | * EDID is delightfully ambiguous about how interlaced modes are to be |
| 834 | * encoded. Our internal representation is of frame height, but some |
| 835 | * HDTV detailed timings are encoded as field height. |
| 836 | * |
| 837 | * The format list here is from CEA, in frame size. Technically we |
| 838 | * should be checking refresh rate too. Whatever. |
| 839 | */ |
| 840 | static void |
| 841 | drm_mode_do_interlace_quirk(struct drm_display_mode *mode, |
| 842 | struct detailed_pixel_timing *pt) |
| 843 | { |
| 844 | int i; |
| 845 | static const struct { |
| 846 | int w, h; |
| 847 | } cea_interlaced[] = { |
| 848 | { 1920, 1080 }, |
| 849 | { 720, 480 }, |
| 850 | { 1440, 480 }, |
| 851 | { 2880, 480 }, |
| 852 | { 720, 576 }, |
| 853 | { 1440, 576 }, |
| 854 | { 2880, 576 }, |
| 855 | }; |
Adam Jackson | b58db2c | 2010-02-15 22:15:39 +0000 | [diff] [blame] | 856 | |
| 857 | if (!(pt->misc & DRM_EDID_PT_INTERLACED)) |
| 858 | return; |
| 859 | |
Kulikov Vasiliy | 3c58141 | 2010-06-28 15:54:52 +0400 | [diff] [blame] | 860 | for (i = 0; i < ARRAY_SIZE(cea_interlaced); i++) { |
Adam Jackson | b58db2c | 2010-02-15 22:15:39 +0000 | [diff] [blame] | 861 | if ((mode->hdisplay == cea_interlaced[i].w) && |
| 862 | (mode->vdisplay == cea_interlaced[i].h / 2)) { |
| 863 | mode->vdisplay *= 2; |
| 864 | mode->vsync_start *= 2; |
| 865 | mode->vsync_end *= 2; |
| 866 | mode->vtotal *= 2; |
| 867 | mode->vtotal |= 1; |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | mode->flags |= DRM_MODE_FLAG_INTERLACE; |
| 872 | } |
| 873 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 874 | /** |
| 875 | * drm_mode_detailed - create a new mode from an EDID detailed timing section |
| 876 | * @dev: DRM device (needed to create new mode) |
| 877 | * @edid: EDID block |
| 878 | * @timing: EDID detailed timing info |
| 879 | * @quirks: quirks to apply |
| 880 | * |
| 881 | * An EDID detailed timing block contains enough info for us to create and |
| 882 | * return a new struct drm_display_mode. |
| 883 | */ |
| 884 | static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, |
| 885 | struct edid *edid, |
| 886 | struct detailed_timing *timing, |
| 887 | u32 quirks) |
| 888 | { |
| 889 | struct drm_display_mode *mode; |
| 890 | struct detailed_pixel_timing *pt = &timing->data.pixel_data; |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 891 | unsigned hactive = (pt->hactive_hblank_hi & 0xf0) << 4 | pt->hactive_lo; |
| 892 | unsigned vactive = (pt->vactive_vblank_hi & 0xf0) << 4 | pt->vactive_lo; |
| 893 | unsigned hblank = (pt->hactive_hblank_hi & 0xf) << 8 | pt->hblank_lo; |
| 894 | unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo; |
Michel Dänzer | e14cbee | 2009-06-23 12:36:32 +0200 | [diff] [blame] | 895 | unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo; |
| 896 | unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo; |
| 897 | unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4; |
| 898 | 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] | 899 | |
Adam Jackson | fc43896 | 2009-06-04 10:20:34 +1000 | [diff] [blame] | 900 | /* ignore tiny modes */ |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 901 | if (hactive < 64 || vactive < 64) |
Adam Jackson | fc43896 | 2009-06-04 10:20:34 +1000 | [diff] [blame] | 902 | return NULL; |
| 903 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 904 | if (pt->misc & DRM_EDID_PT_STEREO) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 905 | printk(KERN_WARNING "stereo mode not supported\n"); |
| 906 | return NULL; |
| 907 | } |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 908 | if (!(pt->misc & DRM_EDID_PT_SEPARATE_SYNC)) { |
Jerome Glisse | 79b7dcb | 2010-01-14 19:02:20 +0100 | [diff] [blame] | 909 | printk(KERN_WARNING "composite sync not supported\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 910 | } |
| 911 | |
Zhao Yakui | fcb4561 | 2009-10-14 09:11:25 +0800 | [diff] [blame] | 912 | /* it is incorrect if hsync/vsync width is zero */ |
| 913 | if (!hsync_pulse_width || !vsync_pulse_width) { |
| 914 | DRM_DEBUG_KMS("Incorrect Detailed timing. " |
| 915 | "Wrong Hsync/Vsync pulse width\n"); |
| 916 | return NULL; |
| 917 | } |
Adam Jackson | bc42aab | 2012-05-23 16:26:54 -0400 | [diff] [blame] | 918 | |
| 919 | if (quirks & EDID_QUIRK_FORCE_REDUCED_BLANKING) { |
| 920 | mode = drm_cvt_mode(dev, hactive, vactive, 60, true, false, false); |
| 921 | if (!mode) |
| 922 | return NULL; |
| 923 | |
| 924 | goto set_size; |
| 925 | } |
| 926 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 927 | mode = drm_mode_create(dev); |
| 928 | if (!mode) |
| 929 | return NULL; |
| 930 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 931 | if (quirks & EDID_QUIRK_135_CLOCK_TOO_HIGH) |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 932 | timing->pixel_clock = cpu_to_le16(1088); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 933 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 934 | mode->clock = le16_to_cpu(timing->pixel_clock) * 10; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 935 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 936 | mode->hdisplay = hactive; |
| 937 | mode->hsync_start = mode->hdisplay + hsync_offset; |
| 938 | mode->hsync_end = mode->hsync_start + hsync_pulse_width; |
| 939 | mode->htotal = mode->hdisplay + hblank; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 940 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 941 | mode->vdisplay = vactive; |
| 942 | mode->vsync_start = mode->vdisplay + vsync_offset; |
| 943 | mode->vsync_end = mode->vsync_start + vsync_pulse_width; |
| 944 | mode->vtotal = mode->vdisplay + vblank; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 945 | |
Jesse Barnes | 7064fef | 2009-11-05 10:12:54 -0800 | [diff] [blame] | 946 | /* Some EDIDs have bogus h/vtotal values */ |
| 947 | if (mode->hsync_end > mode->htotal) |
| 948 | mode->htotal = mode->hsync_end + 1; |
| 949 | if (mode->vsync_end > mode->vtotal) |
| 950 | mode->vtotal = mode->vsync_end + 1; |
| 951 | |
Adam Jackson | b58db2c | 2010-02-15 22:15:39 +0000 | [diff] [blame] | 952 | drm_mode_do_interlace_quirk(mode, pt); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 953 | |
| 954 | if (quirks & EDID_QUIRK_DETAILED_SYNC_PP) { |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 955 | pt->misc |= DRM_EDID_PT_HSYNC_POSITIVE | DRM_EDID_PT_VSYNC_POSITIVE; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 956 | } |
| 957 | |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 958 | mode->flags |= (pt->misc & DRM_EDID_PT_HSYNC_POSITIVE) ? |
| 959 | DRM_MODE_FLAG_PHSYNC : DRM_MODE_FLAG_NHSYNC; |
| 960 | mode->flags |= (pt->misc & DRM_EDID_PT_VSYNC_POSITIVE) ? |
| 961 | DRM_MODE_FLAG_PVSYNC : DRM_MODE_FLAG_NVSYNC; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 962 | |
Adam Jackson | bc42aab | 2012-05-23 16:26:54 -0400 | [diff] [blame] | 963 | set_size: |
Michel Dänzer | e14cbee | 2009-06-23 12:36:32 +0200 | [diff] [blame] | 964 | mode->width_mm = pt->width_mm_lo | (pt->width_height_mm_hi & 0xf0) << 4; |
| 965 | 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] | 966 | |
| 967 | if (quirks & EDID_QUIRK_DETAILED_IN_CM) { |
| 968 | mode->width_mm *= 10; |
| 969 | mode->height_mm *= 10; |
| 970 | } |
| 971 | |
| 972 | if (quirks & EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE) { |
| 973 | mode->width_mm = edid->width_cm * 10; |
| 974 | mode->height_mm = edid->height_cm * 10; |
| 975 | } |
| 976 | |
Adam Jackson | bc42aab | 2012-05-23 16:26:54 -0400 | [diff] [blame] | 977 | mode->type = DRM_MODE_TYPE_DRIVER; |
| 978 | drm_mode_set_name(mode); |
| 979 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 980 | return mode; |
| 981 | } |
| 982 | |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 983 | static bool |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 984 | mode_in_hsync_range(const struct drm_display_mode *mode, |
| 985 | struct edid *edid, u8 *t) |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 986 | { |
| 987 | int hsync, hmin, hmax; |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 988 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 989 | hmin = t[7]; |
| 990 | if (edid->revision >= 4) |
| 991 | hmin += ((t[4] & 0x04) ? 255 : 0); |
| 992 | hmax = t[8]; |
| 993 | if (edid->revision >= 4) |
| 994 | hmax += ((t[4] & 0x08) ? 255 : 0); |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 995 | hsync = drm_mode_hsync(mode); |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 996 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 997 | return (hsync <= hmax && hsync >= hmin); |
| 998 | } |
| 999 | |
| 1000 | static bool |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 1001 | mode_in_vsync_range(const struct drm_display_mode *mode, |
| 1002 | struct edid *edid, u8 *t) |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1003 | { |
| 1004 | int vsync, vmin, vmax; |
| 1005 | |
| 1006 | vmin = t[5]; |
| 1007 | if (edid->revision >= 4) |
| 1008 | vmin += ((t[4] & 0x01) ? 255 : 0); |
| 1009 | vmax = t[6]; |
| 1010 | if (edid->revision >= 4) |
| 1011 | vmax += ((t[4] & 0x02) ? 255 : 0); |
| 1012 | vsync = drm_mode_vrefresh(mode); |
| 1013 | |
| 1014 | return (vsync <= vmax && vsync >= vmin); |
| 1015 | } |
| 1016 | |
| 1017 | static u32 |
| 1018 | range_pixel_clock(struct edid *edid, u8 *t) |
| 1019 | { |
| 1020 | /* unspecified */ |
| 1021 | if (t[9] == 0 || t[9] == 255) |
| 1022 | return 0; |
| 1023 | |
| 1024 | /* 1.4 with CVT support gives us real precision, yay */ |
| 1025 | if (edid->revision >= 4 && t[10] == 0x04) |
| 1026 | return (t[9] * 10000) - ((t[12] >> 2) * 250); |
| 1027 | |
| 1028 | /* 1.3 is pathetic, so fuzz up a bit */ |
| 1029 | return t[9] * 10000 + 5001; |
| 1030 | } |
| 1031 | |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1032 | static bool |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 1033 | mode_in_range(const struct drm_display_mode *mode, struct edid *edid, |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1034 | struct detailed_timing *timing) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1035 | { |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1036 | u32 max_clock; |
| 1037 | u8 *t = (u8 *)timing; |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1038 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1039 | if (!mode_in_hsync_range(mode, edid, t)) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1040 | return false; |
| 1041 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1042 | if (!mode_in_vsync_range(mode, edid, t)) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1043 | return false; |
| 1044 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1045 | if ((max_clock = range_pixel_clock(edid, t))) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1046 | if (mode->clock > max_clock) |
| 1047 | return false; |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1048 | |
| 1049 | /* 1.4 max horizontal check */ |
| 1050 | if (edid->revision >= 4 && t[10] == 0x04) |
| 1051 | if (t[13] && mode->hdisplay > 8 * (t[13] + (256 * (t[12]&0x3)))) |
| 1052 | return false; |
| 1053 | |
| 1054 | if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid)) |
| 1055 | return false; |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1056 | |
| 1057 | return true; |
| 1058 | } |
| 1059 | |
Takashi Iwai | 7b668eb | 2012-07-03 11:22:11 +0200 | [diff] [blame] | 1060 | static bool valid_inferred_mode(const struct drm_connector *connector, |
| 1061 | const struct drm_display_mode *mode) |
| 1062 | { |
| 1063 | struct drm_display_mode *m; |
| 1064 | bool ok = false; |
| 1065 | |
| 1066 | list_for_each_entry(m, &connector->probed_modes, head) { |
| 1067 | if (mode->hdisplay == m->hdisplay && |
| 1068 | mode->vdisplay == m->vdisplay && |
| 1069 | drm_mode_vrefresh(mode) == drm_mode_vrefresh(m)) |
| 1070 | return false; /* duplicated */ |
| 1071 | if (mode->hdisplay <= m->hdisplay && |
| 1072 | mode->vdisplay <= m->vdisplay) |
| 1073 | ok = true; |
| 1074 | } |
| 1075 | return ok; |
| 1076 | } |
| 1077 | |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1078 | static int |
Adam Jackson | cd4cd3d | 2012-04-13 16:33:33 -0400 | [diff] [blame] | 1079 | drm_dmt_modes_for_range(struct drm_connector *connector, struct edid *edid, |
Adam Jackson | b17e52e | 2010-03-29 21:43:27 +0000 | [diff] [blame] | 1080 | struct detailed_timing *timing) |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1081 | { |
| 1082 | int i, modes = 0; |
| 1083 | struct drm_display_mode *newmode; |
| 1084 | struct drm_device *dev = connector->dev; |
| 1085 | |
| 1086 | for (i = 0; i < drm_num_dmt_modes; i++) { |
Takashi Iwai | 7b668eb | 2012-07-03 11:22:11 +0200 | [diff] [blame] | 1087 | if (mode_in_range(drm_dmt_modes + i, edid, timing) && |
| 1088 | valid_inferred_mode(connector, drm_dmt_modes + i)) { |
Adam Jackson | 07a5e63 | 2009-12-03 17:44:38 -0500 | [diff] [blame] | 1089 | newmode = drm_mode_duplicate(dev, &drm_dmt_modes[i]); |
| 1090 | if (newmode) { |
| 1091 | drm_mode_probed_add(connector, newmode); |
| 1092 | modes++; |
| 1093 | } |
| 1094 | } |
| 1095 | } |
| 1096 | |
| 1097 | return modes; |
| 1098 | } |
| 1099 | |
Takashi Iwai | c09dedb | 2012-04-23 17:40:33 +0100 | [diff] [blame] | 1100 | /* fix up 1366x768 mode from 1368x768; |
| 1101 | * GFT/CVT can't express 1366 width which isn't dividable by 8 |
| 1102 | */ |
| 1103 | static void fixup_mode_1366x768(struct drm_display_mode *mode) |
| 1104 | { |
| 1105 | if (mode->hdisplay == 1368 && mode->vdisplay == 768) { |
| 1106 | mode->hdisplay = 1366; |
| 1107 | mode->hsync_start--; |
| 1108 | mode->hsync_end--; |
| 1109 | drm_mode_set_name(mode); |
| 1110 | } |
| 1111 | } |
| 1112 | |
Adam Jackson | b309bd3 | 2012-04-13 16:33:40 -0400 | [diff] [blame] | 1113 | static int |
| 1114 | drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid, |
| 1115 | struct detailed_timing *timing) |
| 1116 | { |
| 1117 | int i, modes = 0; |
| 1118 | struct drm_display_mode *newmode; |
| 1119 | struct drm_device *dev = connector->dev; |
| 1120 | |
| 1121 | for (i = 0; i < num_extra_modes; i++) { |
| 1122 | const struct minimode *m = &extra_modes[i]; |
| 1123 | newmode = drm_gtf_mode(dev, m->w, m->h, m->r, 0, 0); |
Takashi Iwai | fc48f16 | 2012-04-20 12:59:33 +0100 | [diff] [blame] | 1124 | if (!newmode) |
| 1125 | return modes; |
Adam Jackson | b309bd3 | 2012-04-13 16:33:40 -0400 | [diff] [blame] | 1126 | |
Takashi Iwai | c09dedb | 2012-04-23 17:40:33 +0100 | [diff] [blame] | 1127 | fixup_mode_1366x768(newmode); |
Takashi Iwai | 7b668eb | 2012-07-03 11:22:11 +0200 | [diff] [blame] | 1128 | if (!mode_in_range(newmode, edid, timing) || |
| 1129 | !valid_inferred_mode(connector, newmode)) { |
Adam Jackson | b309bd3 | 2012-04-13 16:33:40 -0400 | [diff] [blame] | 1130 | drm_mode_destroy(dev, newmode); |
| 1131 | continue; |
| 1132 | } |
| 1133 | |
| 1134 | drm_mode_probed_add(connector, newmode); |
| 1135 | modes++; |
| 1136 | } |
| 1137 | |
| 1138 | return modes; |
| 1139 | } |
| 1140 | |
| 1141 | static int |
| 1142 | drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid, |
| 1143 | struct detailed_timing *timing) |
| 1144 | { |
| 1145 | int i, modes = 0; |
| 1146 | struct drm_display_mode *newmode; |
| 1147 | struct drm_device *dev = connector->dev; |
| 1148 | bool rb = drm_monitor_supports_rb(edid); |
| 1149 | |
| 1150 | for (i = 0; i < num_extra_modes; i++) { |
| 1151 | const struct minimode *m = &extra_modes[i]; |
| 1152 | newmode = drm_cvt_mode(dev, m->w, m->h, m->r, rb, 0, 0); |
Takashi Iwai | fc48f16 | 2012-04-20 12:59:33 +0100 | [diff] [blame] | 1153 | if (!newmode) |
| 1154 | return modes; |
Adam Jackson | b309bd3 | 2012-04-13 16:33:40 -0400 | [diff] [blame] | 1155 | |
Takashi Iwai | c09dedb | 2012-04-23 17:40:33 +0100 | [diff] [blame] | 1156 | fixup_mode_1366x768(newmode); |
Takashi Iwai | 7b668eb | 2012-07-03 11:22:11 +0200 | [diff] [blame] | 1157 | if (!mode_in_range(newmode, edid, timing) || |
| 1158 | !valid_inferred_mode(connector, newmode)) { |
Adam Jackson | b309bd3 | 2012-04-13 16:33:40 -0400 | [diff] [blame] | 1159 | drm_mode_destroy(dev, newmode); |
| 1160 | continue; |
| 1161 | } |
| 1162 | |
| 1163 | drm_mode_probed_add(connector, newmode); |
| 1164 | modes++; |
| 1165 | } |
| 1166 | |
| 1167 | return modes; |
| 1168 | } |
| 1169 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1170 | static void |
| 1171 | do_inferred_modes(struct detailed_timing *timing, void *c) |
Adam Jackson | 9340d8c | 2009-12-03 17:44:40 -0500 | [diff] [blame] | 1172 | { |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1173 | struct detailed_mode_closure *closure = c; |
| 1174 | struct detailed_non_pixel *data = &timing->data.other_data; |
Adam Jackson | b309bd3 | 2012-04-13 16:33:40 -0400 | [diff] [blame] | 1175 | struct detailed_data_monitor_range *range = &data->data.range; |
Adam Jackson | 9340d8c | 2009-12-03 17:44:40 -0500 | [diff] [blame] | 1176 | |
Adam Jackson | cb21aaf | 2012-04-13 16:33:36 -0400 | [diff] [blame] | 1177 | if (data->type != EDID_DETAIL_MONITOR_RANGE) |
| 1178 | return; |
| 1179 | |
| 1180 | closure->modes += drm_dmt_modes_for_range(closure->connector, |
| 1181 | closure->edid, |
| 1182 | timing); |
Adam Jackson | b309bd3 | 2012-04-13 16:33:40 -0400 | [diff] [blame] | 1183 | |
| 1184 | if (!version_greater(closure->edid, 1, 1)) |
| 1185 | return; /* GTF not defined yet */ |
| 1186 | |
| 1187 | switch (range->flags) { |
| 1188 | case 0x02: /* secondary gtf, XXX could do more */ |
| 1189 | case 0x00: /* default gtf */ |
| 1190 | closure->modes += drm_gtf_modes_for_range(closure->connector, |
| 1191 | closure->edid, |
| 1192 | timing); |
| 1193 | break; |
| 1194 | case 0x04: /* cvt, only in 1.4+ */ |
| 1195 | if (!version_greater(closure->edid, 1, 3)) |
| 1196 | break; |
| 1197 | |
| 1198 | closure->modes += drm_cvt_modes_for_range(closure->connector, |
| 1199 | closure->edid, |
| 1200 | timing); |
| 1201 | break; |
| 1202 | case 0x01: /* just the ranges, no formula */ |
| 1203 | default: |
| 1204 | break; |
| 1205 | } |
Adam Jackson | 9340d8c | 2009-12-03 17:44:40 -0500 | [diff] [blame] | 1206 | } |
| 1207 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1208 | static int |
| 1209 | add_inferred_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, 0)) |
| 1216 | drm_for_each_detailed_block((u8 *)edid, do_inferred_modes, |
| 1217 | &closure); |
| 1218 | |
| 1219 | return closure.modes; |
| 1220 | } |
| 1221 | |
Adam Jackson | 2255be1 | 2010-03-29 21:43:22 +0000 | [diff] [blame] | 1222 | static int |
| 1223 | drm_est3_modes(struct drm_connector *connector, struct detailed_timing *timing) |
| 1224 | { |
| 1225 | int i, j, m, modes = 0; |
| 1226 | struct drm_display_mode *mode; |
| 1227 | u8 *est = ((u8 *)timing) + 5; |
| 1228 | |
| 1229 | for (i = 0; i < 6; i++) { |
| 1230 | for (j = 7; j > 0; j--) { |
| 1231 | m = (i * 8) + (7 - j); |
Linus Torvalds | aa9f56b | 2010-08-12 09:21:39 -0700 | [diff] [blame] | 1232 | if (m >= ARRAY_SIZE(est3_modes)) |
Adam Jackson | 2255be1 | 2010-03-29 21:43:22 +0000 | [diff] [blame] | 1233 | break; |
| 1234 | if (est[i] & (1 << j)) { |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 1235 | mode = drm_mode_find_dmt(connector->dev, |
| 1236 | est3_modes[m].w, |
| 1237 | est3_modes[m].h, |
Adam Jackson | f6e252b | 2012-04-13 16:33:31 -0400 | [diff] [blame] | 1238 | est3_modes[m].r, |
| 1239 | est3_modes[m].rb); |
Adam Jackson | 2255be1 | 2010-03-29 21:43:22 +0000 | [diff] [blame] | 1240 | if (mode) { |
| 1241 | drm_mode_probed_add(connector, mode); |
| 1242 | modes++; |
| 1243 | } |
| 1244 | } |
| 1245 | } |
| 1246 | } |
| 1247 | |
| 1248 | return modes; |
| 1249 | } |
| 1250 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1251 | static void |
| 1252 | do_established_modes(struct detailed_timing *timing, void *c) |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1253 | { |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1254 | struct detailed_mode_closure *closure = c; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1255 | struct detailed_non_pixel *data = &timing->data.other_data; |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1256 | |
| 1257 | if (data->type == EDID_DETAIL_EST_TIMINGS) |
| 1258 | closure->modes += drm_est3_modes(closure->connector, timing); |
| 1259 | } |
| 1260 | |
| 1261 | /** |
| 1262 | * add_established_modes - get est. modes from EDID and add them |
| 1263 | * @edid: EDID block to scan |
| 1264 | * |
| 1265 | * Each EDID block contains a bitmap of the supported "established modes" list |
| 1266 | * (defined above). Tease them out and add them to the global modes list. |
| 1267 | */ |
| 1268 | static int |
| 1269 | add_established_modes(struct drm_connector *connector, struct edid *edid) |
| 1270 | { |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1271 | struct drm_device *dev = connector->dev; |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1272 | unsigned long est_bits = edid->established_timings.t1 | |
| 1273 | (edid->established_timings.t2 << 8) | |
| 1274 | ((edid->established_timings.mfg_rsvd & 0x80) << 9); |
| 1275 | int i, modes = 0; |
| 1276 | struct detailed_mode_closure closure = { |
| 1277 | connector, edid, 0, 0, 0 |
| 1278 | }; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1279 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1280 | for (i = 0; i <= EDID_EST_TIMINGS; i++) { |
| 1281 | if (est_bits & (1<<i)) { |
| 1282 | struct drm_display_mode *newmode; |
| 1283 | newmode = drm_mode_duplicate(dev, &edid_est_modes[i]); |
| 1284 | if (newmode) { |
| 1285 | drm_mode_probed_add(connector, newmode); |
| 1286 | modes++; |
| 1287 | } |
| 1288 | } |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1289 | } |
| 1290 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1291 | if (version_greater(edid, 1, 0)) |
| 1292 | drm_for_each_detailed_block((u8 *)edid, |
| 1293 | do_established_modes, &closure); |
| 1294 | |
| 1295 | return modes + closure.modes; |
| 1296 | } |
| 1297 | |
| 1298 | static void |
| 1299 | do_standard_modes(struct detailed_timing *timing, void *c) |
| 1300 | { |
| 1301 | struct detailed_mode_closure *closure = c; |
| 1302 | struct detailed_non_pixel *data = &timing->data.other_data; |
| 1303 | struct drm_connector *connector = closure->connector; |
| 1304 | struct edid *edid = closure->edid; |
| 1305 | |
| 1306 | if (data->type == EDID_DETAIL_STD_MODES) { |
| 1307 | int i; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1308 | for (i = 0; i < 6; i++) { |
| 1309 | struct std_timing *std; |
| 1310 | struct drm_display_mode *newmode; |
| 1311 | |
| 1312 | std = &data->data.timings[i]; |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 1313 | newmode = drm_mode_std(connector, edid, std, |
| 1314 | edid->revision); |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1315 | if (newmode) { |
| 1316 | drm_mode_probed_add(connector, newmode); |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1317 | closure->modes++; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1318 | } |
| 1319 | } |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1320 | } |
| 1321 | } |
| 1322 | |
| 1323 | /** |
| 1324 | * add_standard_modes - get std. modes from EDID and add them |
| 1325 | * @edid: EDID block to scan |
| 1326 | * |
| 1327 | * Standard modes can be calculated using the appropriate standard (DMT, |
| 1328 | * GTF or CVT. Grab them from @edid and add them to the list. |
| 1329 | */ |
| 1330 | static int |
| 1331 | add_standard_modes(struct drm_connector *connector, struct edid *edid) |
| 1332 | { |
| 1333 | int i, modes = 0; |
| 1334 | struct detailed_mode_closure closure = { |
| 1335 | connector, edid, 0, 0, 0 |
| 1336 | }; |
| 1337 | |
| 1338 | for (i = 0; i < EDID_STD_TIMINGS; i++) { |
| 1339 | struct drm_display_mode *newmode; |
| 1340 | |
| 1341 | newmode = drm_mode_std(connector, edid, |
| 1342 | &edid->standard_timings[i], |
| 1343 | edid->revision); |
| 1344 | if (newmode) { |
| 1345 | drm_mode_probed_add(connector, newmode); |
| 1346 | modes++; |
| 1347 | } |
| 1348 | } |
| 1349 | |
| 1350 | if (version_greater(edid, 1, 0)) |
| 1351 | drm_for_each_detailed_block((u8 *)edid, do_standard_modes, |
| 1352 | &closure); |
| 1353 | |
| 1354 | /* XXX should also look for standard codes in VTB blocks */ |
| 1355 | |
| 1356 | return modes + closure.modes; |
| 1357 | } |
| 1358 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1359 | static int drm_cvt_modes(struct drm_connector *connector, |
| 1360 | struct detailed_timing *timing) |
| 1361 | { |
| 1362 | int i, j, modes = 0; |
| 1363 | struct drm_display_mode *newmode; |
| 1364 | struct drm_device *dev = connector->dev; |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 1365 | struct cvt_timing *cvt; |
| 1366 | const int rates[] = { 60, 85, 75, 60, 50 }; |
| 1367 | const u8 empty[3] = { 0, 0, 0 }; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1368 | |
| 1369 | for (i = 0; i < 4; i++) { |
| 1370 | int uninitialized_var(width), height; |
| 1371 | cvt = &(timing->data.other_data.data.cvt[i]); |
| 1372 | |
| 1373 | if (!memcmp(cvt->code, empty, 3)) |
Michel Dänzer | 0454bea | 2009-06-15 16:56:07 +0200 | [diff] [blame] | 1374 | continue; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1375 | |
| 1376 | height = (cvt->code[0] + ((cvt->code[1] & 0xf0) << 4) + 1) * 2; |
Zhao Yakui | 5c61259 | 2009-06-22 13:17:10 +0800 | [diff] [blame] | 1377 | switch (cvt->code[1] & 0x0c) { |
Adam Jackson | f066a17 | 2009-09-23 17:31:21 -0400 | [diff] [blame] | 1378 | case 0x00: |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1379 | width = height * 4 / 3; |
| 1380 | break; |
| 1381 | case 0x04: |
| 1382 | width = height * 16 / 9; |
| 1383 | break; |
| 1384 | case 0x08: |
| 1385 | width = height * 16 / 10; |
| 1386 | break; |
| 1387 | case 0x0c: |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1388 | width = height * 15 / 9; |
| 1389 | break; |
| 1390 | } |
| 1391 | |
| 1392 | for (j = 1; j < 5; j++) { |
| 1393 | if (cvt->code[2] & (1 << j)) { |
| 1394 | newmode = drm_cvt_mode(dev, width, height, |
| 1395 | rates[j], j == 0, |
| 1396 | false, false); |
| 1397 | if (newmode) { |
| 1398 | drm_mode_probed_add(connector, newmode); |
| 1399 | modes++; |
| 1400 | } |
| 1401 | } |
| 1402 | } |
| 1403 | } |
| 1404 | |
| 1405 | return modes; |
| 1406 | } |
| 1407 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1408 | static void |
| 1409 | do_cvt_mode(struct detailed_timing *timing, void *c) |
| 1410 | { |
| 1411 | struct detailed_mode_closure *closure = c; |
| 1412 | struct detailed_non_pixel *data = &timing->data.other_data; |
| 1413 | |
| 1414 | if (data->type == EDID_DETAIL_CVT_3BYTE) |
| 1415 | closure->modes += drm_cvt_modes(closure->connector, timing); |
| 1416 | } |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1417 | |
| 1418 | static int |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1419 | add_cvt_modes(struct drm_connector *connector, struct edid *edid) |
| 1420 | { |
| 1421 | struct detailed_mode_closure closure = { |
| 1422 | connector, edid, 0, 0, 0 |
| 1423 | }; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1424 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1425 | if (version_greater(edid, 1, 2)) |
| 1426 | drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1427 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1428 | /* XXX should also look for CVT codes in VTB blocks */ |
| 1429 | |
| 1430 | return closure.modes; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1431 | } |
| 1432 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1433 | static void |
| 1434 | do_detailed_mode(struct detailed_timing *timing, void *c) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1435 | { |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1436 | struct detailed_mode_closure *closure = c; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1437 | struct drm_display_mode *newmode; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1438 | |
| 1439 | if (timing->pixel_clock) { |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1440 | newmode = drm_mode_detailed(closure->connector->dev, |
| 1441 | closure->edid, timing, |
| 1442 | closure->quirks); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1443 | if (!newmode) |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1444 | return; |
Adam Jackson | 9cf0097 | 2009-12-03 17:44:36 -0500 | [diff] [blame] | 1445 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1446 | if (closure->preferred) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1447 | newmode->type |= DRM_MODE_TYPE_PREFERRED; |
| 1448 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1449 | drm_mode_probed_add(closure->connector, newmode); |
| 1450 | closure->modes++; |
| 1451 | closure->preferred = 0; |
Zhao Yakui | 882f021 | 2009-08-26 18:20:49 +0800 | [diff] [blame] | 1452 | } |
Ma Ling | 167f3a0 | 2009-03-20 14:09:48 +0800 | [diff] [blame] | 1453 | } |
| 1454 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1455 | /* |
| 1456 | * add_detailed_modes - Add modes from detailed timings |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1457 | * @connector: attached connector |
| 1458 | * @edid: EDID block to scan |
| 1459 | * @quirks: quirks to apply |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1460 | */ |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1461 | static int |
| 1462 | add_detailed_modes(struct drm_connector *connector, struct edid *edid, |
| 1463 | u32 quirks) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1464 | { |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1465 | struct detailed_mode_closure closure = { |
| 1466 | connector, |
| 1467 | edid, |
| 1468 | 1, |
| 1469 | quirks, |
| 1470 | 0 |
| 1471 | }; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1472 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1473 | if (closure.preferred && !version_greater(edid, 1, 3)) |
| 1474 | closure.preferred = |
| 1475 | (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING); |
Adam Jackson | a327f6b | 2010-03-29 21:43:25 +0000 | [diff] [blame] | 1476 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1477 | drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1478 | |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 1479 | return closure.modes; |
Zhao Yakui | 882f021 | 2009-08-26 18:20:49 +0800 | [diff] [blame] | 1480 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1481 | |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1482 | #define HDMI_IDENTIFIER 0x000C03 |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1483 | #define AUDIO_BLOCK 0x01 |
Christian Schmidt | 54ac76f | 2011-12-19 14:53:16 +0000 | [diff] [blame] | 1484 | #define VIDEO_BLOCK 0x02 |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1485 | #define VENDOR_BLOCK 0x03 |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1486 | #define SPEAKER_BLOCK 0x04 |
Ville Syrjälä | b1edd6a | 2013-01-17 16:31:30 +0200 | [diff] [blame] | 1487 | #define VIDEO_CAPABILITY_BLOCK 0x07 |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1488 | #define EDID_BASIC_AUDIO (1 << 6) |
Lars-Peter Clausen | a988bc7 | 2012-04-16 15:16:19 +0200 | [diff] [blame] | 1489 | #define EDID_CEA_YCRCB444 (1 << 5) |
| 1490 | #define EDID_CEA_YCRCB422 (1 << 4) |
Ville Syrjälä | b1edd6a | 2013-01-17 16:31:30 +0200 | [diff] [blame] | 1491 | #define EDID_CEA_VCDB_QS (1 << 6) |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1492 | |
| 1493 | /** |
| 1494 | * Search EDID for CEA extension block. |
| 1495 | */ |
Ben Skeggs | eccaca2 | 2011-03-30 05:03:47 +0000 | [diff] [blame] | 1496 | u8 *drm_find_cea_extension(struct edid *edid) |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1497 | { |
| 1498 | u8 *edid_ext = NULL; |
| 1499 | int i; |
| 1500 | |
| 1501 | /* No EDID or EDID extensions */ |
| 1502 | if (edid == NULL || edid->extensions == 0) |
| 1503 | return NULL; |
| 1504 | |
| 1505 | /* Find CEA extension */ |
| 1506 | for (i = 0; i < edid->extensions; i++) { |
| 1507 | edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1); |
| 1508 | if (edid_ext[0] == CEA_EXT) |
| 1509 | break; |
| 1510 | } |
| 1511 | |
| 1512 | if (i == edid->extensions) |
| 1513 | return NULL; |
| 1514 | |
| 1515 | return edid_ext; |
| 1516 | } |
Ben Skeggs | eccaca2 | 2011-03-30 05:03:47 +0000 | [diff] [blame] | 1517 | EXPORT_SYMBOL(drm_find_cea_extension); |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1518 | |
Stephane Marchesin | a479903 | 2012-11-09 16:21:05 +0000 | [diff] [blame] | 1519 | /* |
| 1520 | * Looks for a CEA mode matching given drm_display_mode. |
| 1521 | * Returns its CEA Video ID code, or 0 if not found. |
| 1522 | */ |
| 1523 | u8 drm_match_cea_mode(struct drm_display_mode *to_match) |
| 1524 | { |
| 1525 | struct drm_display_mode *cea_mode; |
| 1526 | u8 mode; |
| 1527 | |
| 1528 | for (mode = 0; mode < drm_num_cea_modes; mode++) { |
| 1529 | cea_mode = (struct drm_display_mode *)&edid_cea_modes[mode]; |
| 1530 | |
| 1531 | if (drm_mode_equal(to_match, cea_mode)) |
| 1532 | return mode + 1; |
| 1533 | } |
| 1534 | return 0; |
| 1535 | } |
| 1536 | EXPORT_SYMBOL(drm_match_cea_mode); |
| 1537 | |
| 1538 | |
Christian Schmidt | 54ac76f | 2011-12-19 14:53:16 +0000 | [diff] [blame] | 1539 | static int |
| 1540 | do_cea_modes (struct drm_connector *connector, u8 *db, u8 len) |
| 1541 | { |
| 1542 | struct drm_device *dev = connector->dev; |
| 1543 | u8 * mode, cea_mode; |
| 1544 | int modes = 0; |
| 1545 | |
| 1546 | for (mode = db; mode < db + len; mode++) { |
| 1547 | cea_mode = (*mode & 127) - 1; /* CEA modes are numbered 1..127 */ |
| 1548 | if (cea_mode < drm_num_cea_modes) { |
| 1549 | struct drm_display_mode *newmode; |
| 1550 | newmode = drm_mode_duplicate(dev, |
| 1551 | &edid_cea_modes[cea_mode]); |
| 1552 | if (newmode) { |
| 1553 | drm_mode_probed_add(connector, newmode); |
| 1554 | modes++; |
| 1555 | } |
| 1556 | } |
| 1557 | } |
| 1558 | |
| 1559 | return modes; |
| 1560 | } |
| 1561 | |
| 1562 | static int |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1563 | cea_db_payload_len(const u8 *db) |
| 1564 | { |
| 1565 | return db[0] & 0x1f; |
| 1566 | } |
| 1567 | |
| 1568 | static int |
| 1569 | cea_db_tag(const u8 *db) |
| 1570 | { |
| 1571 | return db[0] >> 5; |
| 1572 | } |
| 1573 | |
| 1574 | static int |
| 1575 | cea_revision(const u8 *cea) |
| 1576 | { |
| 1577 | return cea[1]; |
| 1578 | } |
| 1579 | |
| 1580 | static int |
| 1581 | cea_db_offsets(const u8 *cea, int *start, int *end) |
| 1582 | { |
| 1583 | /* Data block offset in CEA extension block */ |
| 1584 | *start = 4; |
| 1585 | *end = cea[2]; |
| 1586 | if (*end == 0) |
| 1587 | *end = 127; |
| 1588 | if (*end < 4 || *end > 127) |
| 1589 | return -ERANGE; |
| 1590 | return 0; |
| 1591 | } |
| 1592 | |
| 1593 | #define for_each_cea_db(cea, i, start, end) \ |
| 1594 | for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1) |
| 1595 | |
| 1596 | static int |
Christian Schmidt | 54ac76f | 2011-12-19 14:53:16 +0000 | [diff] [blame] | 1597 | add_cea_modes(struct drm_connector *connector, struct edid *edid) |
| 1598 | { |
| 1599 | u8 * cea = drm_find_cea_extension(edid); |
| 1600 | u8 * db, dbl; |
| 1601 | int modes = 0; |
| 1602 | |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1603 | if (cea && cea_revision(cea) >= 3) { |
| 1604 | int i, start, end; |
| 1605 | |
| 1606 | if (cea_db_offsets(cea, &start, &end)) |
| 1607 | return 0; |
| 1608 | |
| 1609 | for_each_cea_db(cea, i, start, end) { |
| 1610 | db = &cea[i]; |
| 1611 | dbl = cea_db_payload_len(db); |
| 1612 | |
| 1613 | if (cea_db_tag(db) == VIDEO_BLOCK) |
Christian Schmidt | 54ac76f | 2011-12-19 14:53:16 +0000 | [diff] [blame] | 1614 | modes += do_cea_modes (connector, db+1, dbl); |
| 1615 | } |
| 1616 | } |
| 1617 | |
| 1618 | return modes; |
| 1619 | } |
| 1620 | |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1621 | static void |
Ville Syrjälä | 8504072 | 2012-08-16 14:55:05 +0000 | [diff] [blame] | 1622 | parse_hdmi_vsdb(struct drm_connector *connector, const u8 *db) |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1623 | { |
Ville Syrjälä | 8504072 | 2012-08-16 14:55:05 +0000 | [diff] [blame] | 1624 | u8 len = cea_db_payload_len(db); |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1625 | |
Ville Syrjälä | 8504072 | 2012-08-16 14:55:05 +0000 | [diff] [blame] | 1626 | if (len >= 6) { |
| 1627 | connector->eld[5] |= (db[6] >> 7) << 1; /* Supports_AI */ |
| 1628 | connector->dvi_dual = db[6] & 1; |
| 1629 | } |
| 1630 | if (len >= 7) |
| 1631 | connector->max_tmds_clock = db[7] * 5; |
| 1632 | if (len >= 8) { |
| 1633 | connector->latency_present[0] = db[8] >> 7; |
| 1634 | connector->latency_present[1] = (db[8] >> 6) & 1; |
| 1635 | } |
| 1636 | if (len >= 9) |
| 1637 | connector->video_latency[0] = db[9]; |
| 1638 | if (len >= 10) |
| 1639 | connector->audio_latency[0] = db[10]; |
| 1640 | if (len >= 11) |
| 1641 | connector->video_latency[1] = db[11]; |
| 1642 | if (len >= 12) |
| 1643 | connector->audio_latency[1] = db[12]; |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1644 | |
Daniel Vetter | 670c1ef | 2012-11-22 09:53:55 +0100 | [diff] [blame] | 1645 | DRM_DEBUG_KMS("HDMI: DVI dual %d, " |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1646 | "max TMDS clock %d, " |
| 1647 | "latency present %d %d, " |
| 1648 | "video latency %d %d, " |
| 1649 | "audio latency %d %d\n", |
| 1650 | connector->dvi_dual, |
| 1651 | connector->max_tmds_clock, |
| 1652 | (int) connector->latency_present[0], |
| 1653 | (int) connector->latency_present[1], |
| 1654 | connector->video_latency[0], |
| 1655 | connector->video_latency[1], |
| 1656 | connector->audio_latency[0], |
| 1657 | connector->audio_latency[1]); |
| 1658 | } |
| 1659 | |
| 1660 | static void |
| 1661 | monitor_name(struct detailed_timing *t, void *data) |
| 1662 | { |
| 1663 | if (t->data.other_data.type == EDID_DETAIL_MONITOR_NAME) |
| 1664 | *(u8 **)data = t->data.other_data.data.str.str; |
| 1665 | } |
| 1666 | |
Ville Syrjälä | 14f77fd | 2012-08-16 14:55:06 +0000 | [diff] [blame] | 1667 | static bool cea_db_is_hdmi_vsdb(const u8 *db) |
| 1668 | { |
| 1669 | int hdmi_id; |
| 1670 | |
| 1671 | if (cea_db_tag(db) != VENDOR_BLOCK) |
| 1672 | return false; |
| 1673 | |
| 1674 | if (cea_db_payload_len(db) < 5) |
| 1675 | return false; |
| 1676 | |
| 1677 | hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16); |
| 1678 | |
| 1679 | return hdmi_id == HDMI_IDENTIFIER; |
| 1680 | } |
| 1681 | |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1682 | /** |
| 1683 | * drm_edid_to_eld - build ELD from EDID |
| 1684 | * @connector: connector corresponding to the HDMI/DP sink |
| 1685 | * @edid: EDID to parse |
| 1686 | * |
| 1687 | * Fill the ELD (EDID-Like Data) buffer for passing to the audio driver. |
| 1688 | * Some ELD fields are left to the graphics driver caller: |
| 1689 | * - Conn_Type |
| 1690 | * - HDCP |
| 1691 | * - Port_ID |
| 1692 | */ |
| 1693 | void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) |
| 1694 | { |
| 1695 | uint8_t *eld = connector->eld; |
| 1696 | u8 *cea; |
| 1697 | u8 *name; |
| 1698 | u8 *db; |
| 1699 | int sad_count = 0; |
| 1700 | int mnl; |
| 1701 | int dbl; |
| 1702 | |
| 1703 | memset(eld, 0, sizeof(connector->eld)); |
| 1704 | |
| 1705 | cea = drm_find_cea_extension(edid); |
| 1706 | if (!cea) { |
| 1707 | DRM_DEBUG_KMS("ELD: no CEA Extension found\n"); |
| 1708 | return; |
| 1709 | } |
| 1710 | |
| 1711 | name = NULL; |
| 1712 | drm_for_each_detailed_block((u8 *)edid, monitor_name, &name); |
| 1713 | for (mnl = 0; name && mnl < 13; mnl++) { |
| 1714 | if (name[mnl] == 0x0a) |
| 1715 | break; |
| 1716 | eld[20 + mnl] = name[mnl]; |
| 1717 | } |
| 1718 | eld[4] = (cea[1] << 5) | mnl; |
| 1719 | DRM_DEBUG_KMS("ELD monitor %s\n", eld + 20); |
| 1720 | |
| 1721 | eld[0] = 2 << 3; /* ELD version: 2 */ |
| 1722 | |
| 1723 | eld[16] = edid->mfg_id[0]; |
| 1724 | eld[17] = edid->mfg_id[1]; |
| 1725 | eld[18] = edid->prod_code[0]; |
| 1726 | eld[19] = edid->prod_code[1]; |
| 1727 | |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1728 | if (cea_revision(cea) >= 3) { |
| 1729 | int i, start, end; |
| 1730 | |
| 1731 | if (cea_db_offsets(cea, &start, &end)) { |
| 1732 | start = 0; |
| 1733 | end = 0; |
| 1734 | } |
| 1735 | |
| 1736 | for_each_cea_db(cea, i, start, end) { |
| 1737 | db = &cea[i]; |
| 1738 | dbl = cea_db_payload_len(db); |
| 1739 | |
| 1740 | switch (cea_db_tag(db)) { |
Christian Schmidt | a0ab734 | 2011-12-19 20:03:38 +0100 | [diff] [blame] | 1741 | case AUDIO_BLOCK: |
| 1742 | /* Audio Data Block, contains SADs */ |
| 1743 | sad_count = dbl / 3; |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1744 | if (dbl >= 1) |
| 1745 | memcpy(eld + 20 + mnl, &db[1], dbl); |
Christian Schmidt | a0ab734 | 2011-12-19 20:03:38 +0100 | [diff] [blame] | 1746 | break; |
| 1747 | case SPEAKER_BLOCK: |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1748 | /* Speaker Allocation Data Block */ |
| 1749 | if (dbl >= 1) |
| 1750 | eld[7] = db[1]; |
Christian Schmidt | a0ab734 | 2011-12-19 20:03:38 +0100 | [diff] [blame] | 1751 | break; |
| 1752 | case VENDOR_BLOCK: |
| 1753 | /* HDMI Vendor-Specific Data Block */ |
Ville Syrjälä | 14f77fd | 2012-08-16 14:55:06 +0000 | [diff] [blame] | 1754 | if (cea_db_is_hdmi_vsdb(db)) |
Christian Schmidt | a0ab734 | 2011-12-19 20:03:38 +0100 | [diff] [blame] | 1755 | parse_hdmi_vsdb(connector, db); |
| 1756 | break; |
| 1757 | default: |
| 1758 | break; |
| 1759 | } |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1760 | } |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1761 | } |
Wu Fengguang | 76adaa34 | 2011-09-05 14:23:20 +0800 | [diff] [blame] | 1762 | eld[5] |= sad_count << 4; |
| 1763 | eld[2] = (20 + mnl + sad_count * 3 + 3) / 4; |
| 1764 | |
| 1765 | DRM_DEBUG_KMS("ELD size %d, SAD count %d\n", (int)eld[2], sad_count); |
| 1766 | } |
| 1767 | EXPORT_SYMBOL(drm_edid_to_eld); |
| 1768 | |
| 1769 | /** |
| 1770 | * drm_av_sync_delay - HDMI/DP sink audio-video sync delay in millisecond |
| 1771 | * @connector: connector associated with the HDMI/DP sink |
| 1772 | * @mode: the display mode |
| 1773 | */ |
| 1774 | int drm_av_sync_delay(struct drm_connector *connector, |
| 1775 | struct drm_display_mode *mode) |
| 1776 | { |
| 1777 | int i = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); |
| 1778 | int a, v; |
| 1779 | |
| 1780 | if (!connector->latency_present[0]) |
| 1781 | return 0; |
| 1782 | if (!connector->latency_present[1]) |
| 1783 | i = 0; |
| 1784 | |
| 1785 | a = connector->audio_latency[i]; |
| 1786 | v = connector->video_latency[i]; |
| 1787 | |
| 1788 | /* |
| 1789 | * HDMI/DP sink doesn't support audio or video? |
| 1790 | */ |
| 1791 | if (a == 255 || v == 255) |
| 1792 | return 0; |
| 1793 | |
| 1794 | /* |
| 1795 | * Convert raw EDID values to millisecond. |
| 1796 | * Treat unknown latency as 0ms. |
| 1797 | */ |
| 1798 | if (a) |
| 1799 | a = min(2 * (a - 1), 500); |
| 1800 | if (v) |
| 1801 | v = min(2 * (v - 1), 500); |
| 1802 | |
| 1803 | return max(v - a, 0); |
| 1804 | } |
| 1805 | EXPORT_SYMBOL(drm_av_sync_delay); |
| 1806 | |
| 1807 | /** |
| 1808 | * drm_select_eld - select one ELD from multiple HDMI/DP sinks |
| 1809 | * @encoder: the encoder just changed display mode |
| 1810 | * @mode: the adjusted display mode |
| 1811 | * |
| 1812 | * It's possible for one encoder to be associated with multiple HDMI/DP sinks. |
| 1813 | * The policy is now hard coded to simply use the first HDMI/DP sink's ELD. |
| 1814 | */ |
| 1815 | struct drm_connector *drm_select_eld(struct drm_encoder *encoder, |
| 1816 | struct drm_display_mode *mode) |
| 1817 | { |
| 1818 | struct drm_connector *connector; |
| 1819 | struct drm_device *dev = encoder->dev; |
| 1820 | |
| 1821 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 1822 | if (connector->encoder == encoder && connector->eld[0]) |
| 1823 | return connector; |
| 1824 | |
| 1825 | return NULL; |
| 1826 | } |
| 1827 | EXPORT_SYMBOL(drm_select_eld); |
| 1828 | |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1829 | /** |
| 1830 | * drm_detect_hdmi_monitor - detect whether monitor is hdmi. |
| 1831 | * @edid: monitor EDID information |
| 1832 | * |
| 1833 | * Parse the CEA extension according to CEA-861-B. |
| 1834 | * Return true if HDMI, false if not or unknown. |
| 1835 | */ |
| 1836 | bool drm_detect_hdmi_monitor(struct edid *edid) |
| 1837 | { |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1838 | u8 *edid_ext; |
Ville Syrjälä | 14f77fd | 2012-08-16 14:55:06 +0000 | [diff] [blame] | 1839 | int i; |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1840 | int start_offset, end_offset; |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1841 | |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1842 | edid_ext = drm_find_cea_extension(edid); |
| 1843 | if (!edid_ext) |
Ville Syrjälä | 14f77fd | 2012-08-16 14:55:06 +0000 | [diff] [blame] | 1844 | return false; |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1845 | |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1846 | if (cea_db_offsets(edid_ext, &start_offset, &end_offset)) |
Ville Syrjälä | 14f77fd | 2012-08-16 14:55:06 +0000 | [diff] [blame] | 1847 | return false; |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1848 | |
| 1849 | /* |
| 1850 | * Because HDMI identifier is in Vendor Specific Block, |
| 1851 | * search it from all data blocks of CEA extension. |
| 1852 | */ |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1853 | for_each_cea_db(edid_ext, i, start_offset, end_offset) { |
Ville Syrjälä | 14f77fd | 2012-08-16 14:55:06 +0000 | [diff] [blame] | 1854 | if (cea_db_is_hdmi_vsdb(&edid_ext[i])) |
| 1855 | return true; |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1856 | } |
| 1857 | |
Ville Syrjälä | 14f77fd | 2012-08-16 14:55:06 +0000 | [diff] [blame] | 1858 | return false; |
Ma Ling | f23c20c | 2009-03-26 19:26:23 +0800 | [diff] [blame] | 1859 | } |
| 1860 | EXPORT_SYMBOL(drm_detect_hdmi_monitor); |
| 1861 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1862 | /** |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1863 | * drm_detect_monitor_audio - check monitor audio capability |
| 1864 | * |
| 1865 | * Monitor should have CEA extension block. |
| 1866 | * If monitor has 'basic audio', but no CEA audio blocks, it's 'basic |
| 1867 | * audio' only. If there is any audio extension block and supported |
| 1868 | * audio format, assume at least 'basic audio' support, even if 'basic |
| 1869 | * audio' is not defined in EDID. |
| 1870 | * |
| 1871 | */ |
| 1872 | bool drm_detect_monitor_audio(struct edid *edid) |
| 1873 | { |
| 1874 | u8 *edid_ext; |
| 1875 | int i, j; |
| 1876 | bool has_audio = false; |
| 1877 | int start_offset, end_offset; |
| 1878 | |
| 1879 | edid_ext = drm_find_cea_extension(edid); |
| 1880 | if (!edid_ext) |
| 1881 | goto end; |
| 1882 | |
| 1883 | has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0); |
| 1884 | |
| 1885 | if (has_audio) { |
| 1886 | DRM_DEBUG_KMS("Monitor has basic audio support\n"); |
| 1887 | goto end; |
| 1888 | } |
| 1889 | |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1890 | if (cea_db_offsets(edid_ext, &start_offset, &end_offset)) |
| 1891 | goto end; |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1892 | |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1893 | for_each_cea_db(edid_ext, i, start_offset, end_offset) { |
| 1894 | if (cea_db_tag(&edid_ext[i]) == AUDIO_BLOCK) { |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1895 | has_audio = true; |
Ville Syrjälä | 9e50b9d | 2012-08-16 14:55:04 +0000 | [diff] [blame] | 1896 | for (j = 1; j < cea_db_payload_len(&edid_ext[i]) + 1; j += 3) |
Zhenyu Wang | 8fe9790 | 2010-09-19 14:27:28 +0800 | [diff] [blame] | 1897 | DRM_DEBUG_KMS("CEA audio format %d\n", |
| 1898 | (edid_ext[i + j] >> 3) & 0xf); |
| 1899 | goto end; |
| 1900 | } |
| 1901 | } |
| 1902 | end: |
| 1903 | return has_audio; |
| 1904 | } |
| 1905 | EXPORT_SYMBOL(drm_detect_monitor_audio); |
| 1906 | |
| 1907 | /** |
Ville Syrjälä | b1edd6a | 2013-01-17 16:31:30 +0200 | [diff] [blame] | 1908 | * drm_rgb_quant_range_selectable - is RGB quantization range selectable? |
| 1909 | * |
| 1910 | * Check whether the monitor reports the RGB quantization range selection |
| 1911 | * as supported. The AVI infoframe can then be used to inform the monitor |
| 1912 | * which quantization range (full or limited) is used. |
| 1913 | */ |
| 1914 | bool drm_rgb_quant_range_selectable(struct edid *edid) |
| 1915 | { |
| 1916 | u8 *edid_ext; |
| 1917 | int i, start, end; |
| 1918 | |
| 1919 | edid_ext = drm_find_cea_extension(edid); |
| 1920 | if (!edid_ext) |
| 1921 | return false; |
| 1922 | |
| 1923 | if (cea_db_offsets(edid_ext, &start, &end)) |
| 1924 | return false; |
| 1925 | |
| 1926 | for_each_cea_db(edid_ext, i, start, end) { |
| 1927 | if (cea_db_tag(&edid_ext[i]) == VIDEO_CAPABILITY_BLOCK && |
| 1928 | cea_db_payload_len(&edid_ext[i]) == 2) { |
| 1929 | DRM_DEBUG_KMS("CEA VCDB 0x%02x\n", edid_ext[i + 2]); |
| 1930 | return edid_ext[i + 2] & EDID_CEA_VCDB_QS; |
| 1931 | } |
| 1932 | } |
| 1933 | |
| 1934 | return false; |
| 1935 | } |
| 1936 | EXPORT_SYMBOL(drm_rgb_quant_range_selectable); |
| 1937 | |
| 1938 | /** |
Jesse Barnes | 3b11228 | 2011-04-15 12:49:23 -0700 | [diff] [blame] | 1939 | * drm_add_display_info - pull display info out if present |
| 1940 | * @edid: EDID data |
| 1941 | * @info: display info (attached to connector) |
| 1942 | * |
| 1943 | * Grab any available display info and stuff it into the drm_display_info |
| 1944 | * structure that's part of the connector. Useful for tracking bpp and |
| 1945 | * color spaces. |
| 1946 | */ |
| 1947 | static void drm_add_display_info(struct edid *edid, |
| 1948 | struct drm_display_info *info) |
| 1949 | { |
Jesse Barnes | ebec9a7b | 2011-08-03 09:22:54 -0700 | [diff] [blame] | 1950 | u8 *edid_ext; |
| 1951 | |
Jesse Barnes | 3b11228 | 2011-04-15 12:49:23 -0700 | [diff] [blame] | 1952 | info->width_mm = edid->width_cm * 10; |
| 1953 | info->height_mm = edid->height_cm * 10; |
| 1954 | |
| 1955 | /* driver figures it out in this case */ |
| 1956 | info->bpc = 0; |
Jesse Barnes | da05a5a7 | 2011-04-15 13:48:57 -0700 | [diff] [blame] | 1957 | info->color_formats = 0; |
Jesse Barnes | 3b11228 | 2011-04-15 12:49:23 -0700 | [diff] [blame] | 1958 | |
Lars-Peter Clausen | a988bc7 | 2012-04-16 15:16:19 +0200 | [diff] [blame] | 1959 | if (edid->revision < 3) |
Jesse Barnes | 3b11228 | 2011-04-15 12:49:23 -0700 | [diff] [blame] | 1960 | return; |
| 1961 | |
| 1962 | if (!(edid->input & DRM_EDID_INPUT_DIGITAL)) |
| 1963 | return; |
| 1964 | |
Lars-Peter Clausen | a988bc7 | 2012-04-16 15:16:19 +0200 | [diff] [blame] | 1965 | /* Get data from CEA blocks if present */ |
| 1966 | edid_ext = drm_find_cea_extension(edid); |
| 1967 | if (edid_ext) { |
| 1968 | info->cea_rev = edid_ext[1]; |
| 1969 | |
| 1970 | /* The existence of a CEA block should imply RGB support */ |
| 1971 | info->color_formats = DRM_COLOR_FORMAT_RGB444; |
| 1972 | if (edid_ext[3] & EDID_CEA_YCRCB444) |
| 1973 | info->color_formats |= DRM_COLOR_FORMAT_YCRCB444; |
| 1974 | if (edid_ext[3] & EDID_CEA_YCRCB422) |
| 1975 | info->color_formats |= DRM_COLOR_FORMAT_YCRCB422; |
| 1976 | } |
| 1977 | |
| 1978 | /* Only defined for 1.4 with digital displays */ |
| 1979 | if (edid->revision < 4) |
| 1980 | return; |
| 1981 | |
Jesse Barnes | 3b11228 | 2011-04-15 12:49:23 -0700 | [diff] [blame] | 1982 | switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) { |
| 1983 | case DRM_EDID_DIGITAL_DEPTH_6: |
| 1984 | info->bpc = 6; |
| 1985 | break; |
| 1986 | case DRM_EDID_DIGITAL_DEPTH_8: |
| 1987 | info->bpc = 8; |
| 1988 | break; |
| 1989 | case DRM_EDID_DIGITAL_DEPTH_10: |
| 1990 | info->bpc = 10; |
| 1991 | break; |
| 1992 | case DRM_EDID_DIGITAL_DEPTH_12: |
| 1993 | info->bpc = 12; |
| 1994 | break; |
| 1995 | case DRM_EDID_DIGITAL_DEPTH_14: |
| 1996 | info->bpc = 14; |
| 1997 | break; |
| 1998 | case DRM_EDID_DIGITAL_DEPTH_16: |
| 1999 | info->bpc = 16; |
| 2000 | break; |
| 2001 | case DRM_EDID_DIGITAL_DEPTH_UNDEF: |
| 2002 | default: |
| 2003 | info->bpc = 0; |
| 2004 | break; |
| 2005 | } |
Jesse Barnes | da05a5a7 | 2011-04-15 13:48:57 -0700 | [diff] [blame] | 2006 | |
Lars-Peter Clausen | a988bc7 | 2012-04-16 15:16:19 +0200 | [diff] [blame] | 2007 | info->color_formats |= DRM_COLOR_FORMAT_RGB444; |
Lars-Peter Clausen | ee58808 | 2012-04-16 15:16:18 +0200 | [diff] [blame] | 2008 | if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB444) |
| 2009 | info->color_formats |= DRM_COLOR_FORMAT_YCRCB444; |
| 2010 | if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB422) |
| 2011 | info->color_formats |= DRM_COLOR_FORMAT_YCRCB422; |
Jesse Barnes | 3b11228 | 2011-04-15 12:49:23 -0700 | [diff] [blame] | 2012 | } |
| 2013 | |
| 2014 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 2015 | * drm_add_edid_modes - add modes from EDID data, if available |
| 2016 | * @connector: connector we're probing |
| 2017 | * @edid: edid data |
| 2018 | * |
| 2019 | * Add the specified modes to the connector's mode list. |
| 2020 | * |
| 2021 | * Return number of modes added or 0 if we couldn't find any. |
| 2022 | */ |
| 2023 | int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid) |
| 2024 | { |
| 2025 | int num_modes = 0; |
| 2026 | u32 quirks; |
| 2027 | |
| 2028 | if (edid == NULL) { |
| 2029 | return 0; |
| 2030 | } |
Alex Deucher | 3c53788 | 2010-02-05 04:21:19 -0500 | [diff] [blame] | 2031 | if (!drm_edid_is_valid(edid)) { |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 2032 | dev_warn(connector->dev->dev, "%s: EDID invalid.\n", |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 2033 | drm_get_connector_name(connector)); |
| 2034 | return 0; |
| 2035 | } |
| 2036 | |
| 2037 | quirks = edid_get_quirks(edid); |
| 2038 | |
Adam Jackson | c867df7 | 2010-03-29 21:43:21 +0000 | [diff] [blame] | 2039 | /* |
| 2040 | * EDID spec says modes should be preferred in this order: |
| 2041 | * - preferred detailed mode |
| 2042 | * - other detailed modes from base block |
| 2043 | * - detailed modes from extension blocks |
| 2044 | * - CVT 3-byte code modes |
| 2045 | * - standard timing codes |
| 2046 | * - established timing codes |
| 2047 | * - modes inferred from GTF or CVT range information |
| 2048 | * |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 2049 | * We get this pretty much right. |
Adam Jackson | c867df7 | 2010-03-29 21:43:21 +0000 | [diff] [blame] | 2050 | * |
| 2051 | * XXX order for additional mode types in extension blocks? |
| 2052 | */ |
Adam Jackson | 1393157 | 2010-08-03 14:38:19 -0400 | [diff] [blame] | 2053 | num_modes += add_detailed_modes(connector, edid, quirks); |
| 2054 | num_modes += add_cvt_modes(connector, edid); |
Adam Jackson | c867df7 | 2010-03-29 21:43:21 +0000 | [diff] [blame] | 2055 | num_modes += add_standard_modes(connector, edid); |
| 2056 | num_modes += add_established_modes(connector, edid); |
Paulo Zanoni | 196e077 | 2013-02-15 13:36:27 -0200 | [diff] [blame] | 2057 | if (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF) |
| 2058 | num_modes += add_inferred_modes(connector, edid); |
Christian Schmidt | 54ac76f | 2011-12-19 14:53:16 +0000 | [diff] [blame] | 2059 | num_modes += add_cea_modes(connector, edid); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 2060 | |
| 2061 | if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75)) |
| 2062 | edid_fixup_preferred(connector, quirks); |
| 2063 | |
Jesse Barnes | 3b11228 | 2011-04-15 12:49:23 -0700 | [diff] [blame] | 2064 | drm_add_display_info(edid, &connector->display_info); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 2065 | |
| 2066 | return num_modes; |
| 2067 | } |
| 2068 | EXPORT_SYMBOL(drm_add_edid_modes); |
Zhao Yakui | f0fda0a | 2009-09-03 09:33:48 +0800 | [diff] [blame] | 2069 | |
| 2070 | /** |
| 2071 | * drm_add_modes_noedid - add modes for the connectors without EDID |
| 2072 | * @connector: connector we're probing |
| 2073 | * @hdisplay: the horizontal display limit |
| 2074 | * @vdisplay: the vertical display limit |
| 2075 | * |
| 2076 | * Add the specified modes to the connector's mode list. Only when the |
| 2077 | * hdisplay/vdisplay is not beyond the given limit, it will be added. |
| 2078 | * |
| 2079 | * Return number of modes added or 0 if we couldn't find any. |
| 2080 | */ |
| 2081 | int drm_add_modes_noedid(struct drm_connector *connector, |
| 2082 | int hdisplay, int vdisplay) |
| 2083 | { |
| 2084 | int i, count, num_modes = 0; |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 2085 | struct drm_display_mode *mode; |
Zhao Yakui | f0fda0a | 2009-09-03 09:33:48 +0800 | [diff] [blame] | 2086 | struct drm_device *dev = connector->dev; |
| 2087 | |
| 2088 | count = sizeof(drm_dmt_modes) / sizeof(struct drm_display_mode); |
| 2089 | if (hdisplay < 0) |
| 2090 | hdisplay = 0; |
| 2091 | if (vdisplay < 0) |
| 2092 | vdisplay = 0; |
| 2093 | |
| 2094 | for (i = 0; i < count; i++) { |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 2095 | const struct drm_display_mode *ptr = &drm_dmt_modes[i]; |
Zhao Yakui | f0fda0a | 2009-09-03 09:33:48 +0800 | [diff] [blame] | 2096 | if (hdisplay && vdisplay) { |
| 2097 | /* |
| 2098 | * Only when two are valid, they will be used to check |
| 2099 | * whether the mode should be added to the mode list of |
| 2100 | * the connector. |
| 2101 | */ |
| 2102 | if (ptr->hdisplay > hdisplay || |
| 2103 | ptr->vdisplay > vdisplay) |
| 2104 | continue; |
| 2105 | } |
Adam Jackson | f985ded | 2009-11-23 14:23:04 -0500 | [diff] [blame] | 2106 | if (drm_mode_vrefresh(ptr) > 61) |
| 2107 | continue; |
Zhao Yakui | f0fda0a | 2009-09-03 09:33:48 +0800 | [diff] [blame] | 2108 | mode = drm_mode_duplicate(dev, ptr); |
| 2109 | if (mode) { |
| 2110 | drm_mode_probed_add(connector, mode); |
| 2111 | num_modes++; |
| 2112 | } |
| 2113 | } |
| 2114 | return num_modes; |
| 2115 | } |
| 2116 | EXPORT_SYMBOL(drm_add_modes_noedid); |
Paulo Zanoni | 374a868 | 2012-11-23 12:09:26 -0200 | [diff] [blame] | 2117 | |
| 2118 | /** |
| 2119 | * drm_mode_cea_vic - return the CEA-861 VIC of a given mode |
| 2120 | * @mode: mode |
| 2121 | * |
| 2122 | * RETURNS: |
| 2123 | * The VIC number, 0 in case it's not a CEA-861 mode. |
| 2124 | */ |
| 2125 | uint8_t drm_mode_cea_vic(const struct drm_display_mode *mode) |
| 2126 | { |
| 2127 | uint8_t i; |
| 2128 | |
| 2129 | for (i = 0; i < drm_num_cea_modes; i++) |
| 2130 | if (drm_mode_equal(mode, &edid_cea_modes[i])) |
| 2131 | return i + 1; |
| 2132 | |
| 2133 | return 0; |
| 2134 | } |
| 2135 | EXPORT_SYMBOL(drm_mode_cea_vic); |