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-rw-r--r--src/lib/edid.c462
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)
*
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 20:58:06 +0000