diff options
| -rw-r--r-- | src/lib/edid.c | 462 |
1 files changed, 231 insertions, 231 deletions
diff --git a/src/lib/edid.c b/src/lib/edid.c index 1ad9fea9cb..0dc86d5153 100644 --- a/src/lib/edid.c +++ b/src/lib/edid.c @@ -1008,29 +1008,29 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) (unsigned short)(edid[0x0A] + (edid[0x0B] << 8)), (unsigned int)(edid[0x0C] + (edid[0x0D] << 8) + (edid[0x0E] << 16) + (edid[0x0F] << 24))); - /* XXX need manufacturer ID table */ - - if (edid[0x10] < 55 || edid[0x10] == 0xff) { - has_valid_week = 1; - if (edid[0x11] > 0x0f) { - if (edid[0x10] == 0xff) { + /* XXX need manufacturer ID table */ + + if (edid[0x10] < 55 || edid[0x10] == 0xff) { + has_valid_week = 1; + if (edid[0x11] > 0x0f) { + if (edid[0x10] == 0xff) { + has_valid_year = 1; + printk(BIOS_SPEW, "Made week %hhu of model year %hhu\n", edid[0x10], + edid[0x11]); + out->week = edid[0x10]; + out->year = edid[0x11]; + } else { + /* we know it's at least 2013, when this code was written */ + if (edid[0x11] + 90 <= 2013) { has_valid_year = 1; - printk(BIOS_SPEW, "Made week %hhu of model year %hhu\n", edid[0x10], - edid[0x11]); + printk(BIOS_SPEW, "Made week %hhu of %d\n", + edid[0x10], edid[0x11] + 1990); out->week = edid[0x10]; - out->year = edid[0x11]; - } else { - /* we know it's at least 2013, when this code was written */ - if (edid[0x11] + 90 <= 2013) { - has_valid_year = 1; - printk(BIOS_SPEW, "Made week %hhu of %d\n", - edid[0x10], edid[0x11] + 1990); - out->week = edid[0x10]; - out->year = edid[0x11] + 1990; - } + out->year = edid[0x11] + 1990; } } } + } printk(BIOS_SPEW, "EDID version: %hhu.%hhu\n", edid[0x12], edid[0x13]); @@ -1081,7 +1081,7 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) case 0x04: printk(BIOS_SPEW, "MDDI interface\n"); break; case 0x05: printk(BIOS_SPEW, "DisplayPort interface\n"); break; default: - nonconformant_digital_display = 1; + nonconformant_digital_display = 1; } out->type = edid[0x14] & 0x0f; } else if (claims_one_point_two) { @@ -1129,243 +1129,243 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) } - if (edid[0x15] && edid[0x16]) { - printk(BIOS_SPEW, "Maximum image size: %d cm x %d cm\n", - edid[0x15], edid[0x16]); - out->xsize_cm = edid[0x15]; - out->ysize_cm = edid[0x16]; - } else if (claims_one_point_four && (edid[0x15] || edid[0x16])) { - if (edid[0x15]) { - printk(BIOS_SPEW, "Aspect ratio is %f (landscape)\n", - 100.0/(edid[0x16] + 99)); - /* truncated to integer %. We try to avoid floating point */ - out->aspect_landscape = 10000 /(edid[0x16] + 99); - } else { - printk(BIOS_SPEW, "Aspect ratio is %f (portrait)\n", - 100.0/(edid[0x15] + 99)); - out->aspect_portrait = 10000 /(edid[0x16] + 99); - } + if (edid[0x15] && edid[0x16]) { + printk(BIOS_SPEW, "Maximum image size: %d cm x %d cm\n", + edid[0x15], edid[0x16]); + out->xsize_cm = edid[0x15]; + out->ysize_cm = edid[0x16]; + } else if (claims_one_point_four && (edid[0x15] || edid[0x16])) { + if (edid[0x15]) { + printk(BIOS_SPEW, "Aspect ratio is %f (landscape)\n", + 100.0/(edid[0x16] + 99)); + /* truncated to integer %. We try to avoid floating point */ + out->aspect_landscape = 10000 /(edid[0x16] + 99); } else { - /* Either or both can be zero for 1.3 and before */ - printk(BIOS_SPEW, "Image size is variable\n"); + printk(BIOS_SPEW, "Aspect ratio is %f (portrait)\n", + 100.0/(edid[0x15] + 99)); + out->aspect_portrait = 10000 /(edid[0x16] + 99); } + } else { + /* Either or both can be zero for 1.3 and before */ + printk(BIOS_SPEW, "Image size is variable\n"); + } - if (edid[0x17] == 0xff) { - if (claims_one_point_four) - printk(BIOS_SPEW, "Gamma is defined in an extension block\n"); - else - /* XXX Technically 1.3 doesn't say this... */ - printk(BIOS_SPEW, "Gamma: 1.0\n"); - } else printk(BIOS_SPEW, "Gamma: %d%%\n", ((edid[0x17] + 100))); - printk(BIOS_SPEW, "Check DPMS levels\n"); - if (edid[0x18] & 0xE0) { - printk(BIOS_SPEW, "DPMS levels:"); - if (edid[0x18] & 0x80) printk(BIOS_SPEW, " Standby"); - if (edid[0x18] & 0x40) printk(BIOS_SPEW, " Suspend"); - if (edid[0x18] & 0x20) printk(BIOS_SPEW, " Off"); - printk(BIOS_SPEW, "\n"); - } + if (edid[0x17] == 0xff) { + if (claims_one_point_four) + printk(BIOS_SPEW, "Gamma is defined in an extension block\n"); + else + /* XXX Technically 1.3 doesn't say this... */ + printk(BIOS_SPEW, "Gamma: 1.0\n"); + } else printk(BIOS_SPEW, "Gamma: %d%%\n", ((edid[0x17] + 100))); + printk(BIOS_SPEW, "Check DPMS levels\n"); + if (edid[0x18] & 0xE0) { + printk(BIOS_SPEW, "DPMS levels:"); + if (edid[0x18] & 0x80) printk(BIOS_SPEW, " Standby"); + if (edid[0x18] & 0x40) printk(BIOS_SPEW, " Suspend"); + if (edid[0x18] & 0x20) printk(BIOS_SPEW, " Off"); + printk(BIOS_SPEW, "\n"); + } -/* FIXME: this is from 1.4 spec, check earlier */ - if (analog) { - switch (edid[0x18] & 0x18) { + /* FIXME: this is from 1.4 spec, check earlier */ + if (analog) { + switch (edid[0x18] & 0x18) { case 0x00: printk(BIOS_SPEW, "Monochrome or grayscale display\n"); break; case 0x08: printk(BIOS_SPEW, "RGB color display\n"); break; case 0x10: printk(BIOS_SPEW, "Non-RGB color display\n"); break; case 0x18: printk(BIOS_SPEW, "Undefined display color type\n"); - } - } else { - printk(BIOS_SPEW, "Supported color formats: RGB 4:4:4"); - if (edid[0x18] & 0x10) - printk(BIOS_SPEW, ", YCrCb 4:4:4"); - if (edid[0x18] & 0x08) - printk(BIOS_SPEW, ", YCrCb 4:2:2"); - printk(BIOS_SPEW, "\n"); } + } else { + printk(BIOS_SPEW, "Supported color formats: RGB 4:4:4"); + if (edid[0x18] & 0x10) + printk(BIOS_SPEW, ", YCrCb 4:4:4"); + if (edid[0x18] & 0x08) + printk(BIOS_SPEW, ", YCrCb 4:2:2"); + printk(BIOS_SPEW, "\n"); + } - if (edid[0x18] & 0x04) - printk(BIOS_SPEW, "Default (sRGB) color space is primary color space\n"); - if (edid[0x18] & 0x02) { - printk(BIOS_SPEW, "First detailed timing is preferred timing\n"); - has_preferred_timing = 1; - } - if (edid[0x18] & 0x01) - printk(BIOS_SPEW, "Supports GTF timings within operating range\n"); + if (edid[0x18] & 0x04) + printk(BIOS_SPEW, "Default (sRGB) color space is primary color space\n"); + if (edid[0x18] & 0x02) { + printk(BIOS_SPEW, "First detailed timing is preferred timing\n"); + has_preferred_timing = 1; + } + if (edid[0x18] & 0x01) + printk(BIOS_SPEW, "Supports GTF timings within operating range\n"); - /* XXX color section */ + /* XXX color section */ - printk(BIOS_SPEW, "Established timings supported:\n"); - /* it's not yet clear we want all this stuff in the edid struct. - * Let's wait. - */ - for (i = 0; i < 17; i++) { - if (edid[0x23 + i / 8] & (1 << (7 - i % 8))) { - printk(BIOS_SPEW, " %dx%d@%dHz\n", established_timings[i].x, - established_timings[i].y, established_timings[i].refresh); - } + printk(BIOS_SPEW, "Established timings supported:\n"); + /* it's not yet clear we want all this stuff in the edid struct. + * Let's wait. + */ + for (i = 0; i < 17; i++) { + if (edid[0x23 + i / 8] & (1 << (7 - i % 8))) { + printk(BIOS_SPEW, " %dx%d@%dHz\n", established_timings[i].x, + established_timings[i].y, established_timings[i].refresh); } + } - printk(BIOS_SPEW, "Standard timings supported:\n"); - for (i = 0; i < 8; i++) { - uint8_t b1 = edid[0x26 + i * 2], b2 = edid[0x26 + i * 2 + 1]; - unsigned int x, y = 0, refresh; + printk(BIOS_SPEW, "Standard timings supported:\n"); + for (i = 0; i < 8; i++) { + uint8_t b1 = edid[0x26 + i * 2], b2 = edid[0x26 + i * 2 + 1]; + unsigned int x, y = 0, refresh; - if (b1 == 0x01 && b2 == 0x01) - continue; + if (b1 == 0x01 && b2 == 0x01) + continue; - if (b1 == 0) { - printk(BIOS_SPEW, "non-conformant standard timing (0 horiz)\n"); - continue; - } - x = (b1 + 31) * 8; - switch ((b2 >> 6) & 0x3) { - case 0x00: - if (claims_one_point_three) - y = x * 10 / 16; - else - y = x; - break; - case 0x01: - y = x * 3 / 4; - break; - case 0x02: - y = x * 4 / 5; - break; - case 0x03: - y = x * 9 / 16; - break; - } - refresh = 60 + (b2 & 0x3f); - - printk(BIOS_SPEW, " %dx%d@%dHz\n", x, y, refresh); + if (b1 == 0) { + printk(BIOS_SPEW, "non-conformant standard timing (0 horiz)\n"); + continue; } + x = (b1 + 31) * 8; + switch ((b2 >> 6) & 0x3) { + case 0x00: + if (claims_one_point_three) + y = x * 10 / 16; + else + y = x; + break; + case 0x01: + y = x * 3 / 4; + break; + case 0x02: + y = x * 4 / 5; + break; + case 0x03: + y = x * 9 / 16; + break; + } + refresh = 60 + (b2 & 0x3f); - /* detailed timings */ - printk(BIOS_SPEW, "Detailed timings\n"); - has_valid_detailed_blocks = detailed_block(out, edid + 0x36, 0); - if (has_preferred_timing && !did_detailed_timing) - has_preferred_timing = 0; /* not really accurate... */ - has_valid_detailed_blocks &= detailed_block(out, edid + 0x48, 0); - has_valid_detailed_blocks &= detailed_block(out, edid + 0x5A, 0); - has_valid_detailed_blocks &= detailed_block(out, edid + 0x6C, 0); - - /* check this, 1.4 verification guide says otherwise */ - if (edid[0x7e]) { - printk(BIOS_SPEW, "Has %d extension blocks\n", edid[0x7e]); - /* 2 is impossible because of the block map */ - if (edid[0x7e] != 2) - has_valid_extension_count = 1; - } else { + printk(BIOS_SPEW, " %dx%d@%dHz\n", x, y, refresh); + } + + /* detailed timings */ + printk(BIOS_SPEW, "Detailed timings\n"); + has_valid_detailed_blocks = detailed_block(out, edid + 0x36, 0); + if (has_preferred_timing && !did_detailed_timing) + has_preferred_timing = 0; /* not really accurate... */ + has_valid_detailed_blocks &= detailed_block(out, edid + 0x48, 0); + has_valid_detailed_blocks &= detailed_block(out, edid + 0x5A, 0); + has_valid_detailed_blocks &= detailed_block(out, edid + 0x6C, 0); + + /* check this, 1.4 verification guide says otherwise */ + if (edid[0x7e]) { + printk(BIOS_SPEW, "Has %d extension blocks\n", edid[0x7e]); + /* 2 is impossible because of the block map */ + if (edid[0x7e] != 2) has_valid_extension_count = 1; - } + } else { + has_valid_extension_count = 1; + } - printk(BIOS_SPEW, "Checksum\n"); - do_checksum(edid); - for(i = 0; i < size; i += 128) - nonconformant_extension = parse_extension(out, &edid[i]); -/* - x = edid; - for (edid_lines /= 8; edid_lines > 1; edid_lines--) { - x += 128; - nonconformant_extension += parse_extension(x); - } -*/ - - if (claims_one_point_three) { - if (nonconformant_digital_display || - !has_valid_string_termination || - !has_valid_descriptor_pad || - !has_name_descriptor || - !name_descriptor_terminated || - !has_preferred_timing || - !has_range_descriptor) - conformant = 0; - if (!conformant) - printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.3!\n"); - if (nonconformant_digital_display) - printk(BIOS_ERR, "\tDigital display field contains garbage: %x\n", - nonconformant_digital_display); - if (!has_name_descriptor) - printk(BIOS_ERR, "\tMissing name descriptor\n"); - else if (!name_descriptor_terminated) - printk(BIOS_ERR, "\tName descriptor not terminated with a newline\n"); - if (!has_preferred_timing) - printk(BIOS_ERR, "\tMissing preferred timing\n"); - if (!has_range_descriptor) - printk(BIOS_ERR, "\tMissing monitor ranges\n"); - if (!has_valid_descriptor_pad) /* Might be more than just 1.3 */ - printk(BIOS_ERR, "\tInvalid descriptor block padding\n"); - if (!has_valid_string_termination) /* Likewise */ - printk(BIOS_ERR, "\tDetailed block string not properly terminated\n"); - } else if (claims_one_point_two) { - if (nonconformant_digital_display || - (has_name_descriptor && !name_descriptor_terminated)) - conformant = 0; - if (!conformant) - printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.2!\n"); - if (nonconformant_digital_display) - printk(BIOS_ERR, "\tDigital display field contains garbage: %x\n", - nonconformant_digital_display); - if (has_name_descriptor && !name_descriptor_terminated) - printk(BIOS_ERR, "\tName descriptor not terminated with a newline\n"); - } else if (claims_one_point_oh) { - if (seen_non_detailed_descriptor) - conformant = 0; - if (!conformant) - printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.0!\n"); - if (seen_non_detailed_descriptor) - printk(BIOS_ERR, "\tHas descriptor blocks other than detailed timings\n"); - } + printk(BIOS_SPEW, "Checksum\n"); + do_checksum(edid); + for(i = 0; i < size; i += 128) + nonconformant_extension = parse_extension(out, &edid[i]); + /* + * x = edid; + * for (edid_lines /= 8; edid_lines > 1; edid_lines--) { + * x += 128; + * nonconformant_extension += parse_extension(x); + * } + */ - if (nonconformant_extension || - !has_valid_checksum || - !has_valid_cvt || - !has_valid_year || - !has_valid_week || - !has_valid_detailed_blocks || - !has_valid_dummy_block || - !has_valid_extension_count || - !has_valid_descriptor_ordering || - !has_valid_range_descriptor || - !manufacturer_name_well_formed) { + if (claims_one_point_three) { + if (nonconformant_digital_display || + !has_valid_string_termination || + !has_valid_descriptor_pad || + !has_name_descriptor || + !name_descriptor_terminated || + !has_preferred_timing || + !has_range_descriptor) conformant = 0; - printk(BIOS_ERR, "EDID block does not conform at all!\n"); - if (nonconformant_extension) - printk(BIOS_ERR, "\tHas %d nonconformant extension block(s)\n", - nonconformant_extension); - if (!has_valid_checksum) - printk(BIOS_ERR, "\tBlock has broken checksum\n"); - if (!has_valid_cvt) - printk(BIOS_ERR, "\tBroken 3-byte CVT blocks\n"); - if (!has_valid_year) - printk(BIOS_ERR, "\tBad year of manufacture\n"); - if (!has_valid_week) - printk(BIOS_ERR, "\tBad week of manufacture\n"); - if (!has_valid_detailed_blocks) - printk(BIOS_ERR, "\tDetailed blocks filled with garbage\n"); - if (!has_valid_dummy_block) - printk(BIOS_ERR, "\tDummy block filled with garbage\n"); - if (!has_valid_extension_count) - printk(BIOS_ERR, "\tImpossible extension block count\n"); - if (!manufacturer_name_well_formed) - printk(BIOS_ERR, "\tManufacturer name field contains garbage\n"); - if (!has_valid_descriptor_ordering) - printk(BIOS_ERR, "\tInvalid detailed timing descriptor ordering\n"); - if (!has_valid_range_descriptor) - printk(BIOS_ERR, "\tRange descriptor contains garbage\n"); - if (!has_valid_max_dotclock) - printk(BIOS_ERR, "\tEDID 1.4 block does not set max dotclock\n"); - } + if (!conformant) + printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.3!\n"); + if (nonconformant_digital_display) + printk(BIOS_ERR, "\tDigital display field contains garbage: %x\n", + nonconformant_digital_display); + if (!has_name_descriptor) + printk(BIOS_ERR, "\tMissing name descriptor\n"); + else if (!name_descriptor_terminated) + printk(BIOS_ERR, "\tName descriptor not terminated with a newline\n"); + if (!has_preferred_timing) + printk(BIOS_ERR, "\tMissing preferred timing\n"); + if (!has_range_descriptor) + printk(BIOS_ERR, "\tMissing monitor ranges\n"); + if (!has_valid_descriptor_pad) /* Might be more than just 1.3 */ + printk(BIOS_ERR, "\tInvalid descriptor block padding\n"); + if (!has_valid_string_termination) /* Likewise */ + printk(BIOS_ERR, "\tDetailed block string not properly terminated\n"); + } else if (claims_one_point_two) { + if (nonconformant_digital_display || + (has_name_descriptor && !name_descriptor_terminated)) + conformant = 0; + if (!conformant) + printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.2!\n"); + if (nonconformant_digital_display) + printk(BIOS_ERR, "\tDigital display field contains garbage: %x\n", + nonconformant_digital_display); + if (has_name_descriptor && !name_descriptor_terminated) + printk(BIOS_ERR, "\tName descriptor not terminated with a newline\n"); + } else if (claims_one_point_oh) { + if (seen_non_detailed_descriptor) + conformant = 0; + if (!conformant) + printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.0!\n"); + if (seen_non_detailed_descriptor) + printk(BIOS_ERR, "\tHas descriptor blocks other than detailed timings\n"); + } - if (warning_excessive_dotclock_correction) - printk(BIOS_ERR, - "Warning: CVT block corrects dotclock by more than 9.75MHz\n"); - if (warning_zero_preferred_refresh) - printk(BIOS_ERR, - "Warning: CVT block does not set preferred refresh rate\n"); - return !conformant; + if (nonconformant_extension || + !has_valid_checksum || + !has_valid_cvt || + !has_valid_year || + !has_valid_week || + !has_valid_detailed_blocks || + !has_valid_dummy_block || + !has_valid_extension_count || + !has_valid_descriptor_ordering || + !has_valid_range_descriptor || + !manufacturer_name_well_formed) { + conformant = 0; + printk(BIOS_ERR, "EDID block does not conform at all!\n"); + if (nonconformant_extension) + printk(BIOS_ERR, "\tHas %d nonconformant extension block(s)\n", + nonconformant_extension); + if (!has_valid_checksum) + printk(BIOS_ERR, "\tBlock has broken checksum\n"); + if (!has_valid_cvt) + printk(BIOS_ERR, "\tBroken 3-byte CVT blocks\n"); + if (!has_valid_year) + printk(BIOS_ERR, "\tBad year of manufacture\n"); + if (!has_valid_week) + printk(BIOS_ERR, "\tBad week of manufacture\n"); + if (!has_valid_detailed_blocks) + printk(BIOS_ERR, "\tDetailed blocks filled with garbage\n"); + if (!has_valid_dummy_block) + printk(BIOS_ERR, "\tDummy block filled with garbage\n"); + if (!has_valid_extension_count) + printk(BIOS_ERR, "\tImpossible extension block count\n"); + if (!manufacturer_name_well_formed) + printk(BIOS_ERR, "\tManufacturer name field contains garbage\n"); + if (!has_valid_descriptor_ordering) + printk(BIOS_ERR, "\tInvalid detailed timing descriptor ordering\n"); + if (!has_valid_range_descriptor) + printk(BIOS_ERR, "\tRange descriptor contains garbage\n"); + if (!has_valid_max_dotclock) + printk(BIOS_ERR, "\tEDID 1.4 block does not set max dotclock\n"); } + if (warning_excessive_dotclock_correction) + printk(BIOS_ERR, + "Warning: CVT block corrects dotclock by more than 9.75MHz\n"); + if (warning_zero_preferred_refresh) + printk(BIOS_ERR, + "Warning: CVT block does not set preferred refresh rate\n"); + return !conformant; +} + /* * Notes on panel extensions: (TODO, implement me in the code) * |