diff options
author | Hung-Te Lin <hungte@chromium.org> | 2014-04-17 15:21:37 +0800 |
---|---|---|
committer | Marc Jones <marc.jones@se-eng.com> | 2014-12-17 04:51:00 +0100 |
commit | 1c8ee21fd31195be6a0473d10b1e7717f6adc5c2 (patch) | |
tree | 2ecc302f2a7e3ef00e816559566d212cd967c97f | |
parent | 226db05a15a0c6ee55a500117307bdcf119a1822 (diff) |
edid: Change static variables to auto variables.
To support parsing multiple EDID blobs, the static "decode results" flags should
be changed to auto variables inside decode_edid.
This is done by packaging static variables into a structure inside decode_edid.
We also revised some functions (manufacturer_name, do_checksum) to avoid
accessing global variables directly. Extension (and detail block) parsing may
need to access and return all parsed context so we pass the whole structure to
it.
BRANCH=none
BUG=none
TEST=emerge-nyan coreboot chromeos-bootimage
# See EDID parsed correctly on Nyan.
Original-Change-Id: Ieca93d446bacf655c145dffdfa6cc6f5dc87ac26
Original-Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/195372
Original-Reviewed-by: Gabe Black <gabeblack@chromium.org>
(cherry picked from commit ed45909df24c05a0cb8b2ff662fdd2d7a39012f0)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I17cdfa770181a6eaac9d1050d340c8e052572b4a
Reviewed-on: http://review.coreboot.org/7834
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
-rw-r--r-- | src/lib/edid.c | 384 |
1 files changed, 195 insertions, 189 deletions
diff --git a/src/lib/edid.c b/src/lib/edid.c index b11083370a..89755e03cb 100644 --- a/src/lib/edid.c +++ b/src/lib/edid.c @@ -39,35 +39,35 @@ #include <boot/coreboot_tables.h> #include <vbe.h> -static int claims_one_point_oh = 0; -static int claims_one_point_two = 0; -static int claims_one_point_three = 0; -static int claims_one_point_four = 0; -static int nonconformant_digital_display = 0; -static int nonconformant_extension = 0; -static int did_detailed_timing = 0; -static int has_name_descriptor = 0; -static int has_range_descriptor = 0; -static int has_preferred_timing = 0; -static int has_valid_checksum = 0; -static int has_valid_cvt = 1; -static int has_valid_dummy_block = 1; -static int has_valid_week = 0; -static int has_valid_year = 0; -static int has_valid_detailed_blocks = 0; -static int has_valid_extension_count = 0; -static int has_valid_descriptor_ordering = 1; -static int has_valid_descriptor_pad = 1; -static int has_valid_range_descriptor = 1; -static int has_valid_max_dotclock = 1; -static int has_valid_string_termination = 1; -static int manufacturer_name_well_formed = 0; -static int seen_non_detailed_descriptor = 0; - -static int warning_excessive_dotclock_correction = 0; -static int warning_zero_preferred_refresh = 0; - -static int conformant = 1; +struct edid_context { + int claims_one_point_oh; + int claims_one_point_two; + int claims_one_point_three; + int claims_one_point_four; + int nonconformant_digital_display; + int nonconformant_extension; + int did_detailed_timing; + int has_name_descriptor; + int has_range_descriptor; + int has_preferred_timing; + int has_valid_checksum; + int has_valid_cvt; + int has_valid_dummy_block; + int has_valid_week; + int has_valid_year; + int has_valid_detailed_blocks; + int has_valid_extension_count; + int has_valid_descriptor_ordering; + int has_valid_descriptor_pad; + int has_valid_range_descriptor; + int has_valid_max_dotclock; + int has_valid_string_termination; + int manufacturer_name_well_formed; + int seen_non_detailed_descriptor; + int warning_excessive_dotclock_correction; + int warning_zero_preferred_refresh; + int conformant; +}; static int vbe_valid; static struct lb_framebuffer edid_fb; @@ -82,9 +82,9 @@ static char *manufacturer_name(struct edid *out, unsigned char *x) if (isupper(out->manuf_name[0]) && isupper(out->manuf_name[1]) && isupper(out->manuf_name[2])) - manufacturer_name_well_formed = 1; + return out->manuf_name; - return out->manuf_name; + return NULL; } static int @@ -175,7 +175,8 @@ extract_string(unsigned char *x, int *valid_termination, int len) /* 1 means valid data */ static int -detailed_block(struct edid *out, unsigned char *x, int in_extension) +detailed_block(struct edid *out, unsigned char *x, int in_extension, + struct edid_context *c) { int i; #if 1 @@ -191,16 +192,16 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) /* 1.3, 3.10.3 */ printk(BIOS_SPEW, "Monitor descriptor block has byte 2 nonzero (0x%02x)\n", x[2]); - has_valid_descriptor_pad = 0; + c->has_valid_descriptor_pad = 0; } if (x[3] != 0xfd && x[4] != 0x00) { /* 1.3, 3.10.3 */ printk(BIOS_SPEW, "Monitor descriptor block has byte 4 nonzero (0x%02x)\n", x[4]); - has_valid_descriptor_pad = 0; + c->has_valid_descriptor_pad = 0; } - seen_non_detailed_descriptor = 1; + c->seen_non_detailed_descriptor = 1; if (x[3] <= 0xF) { /* * in principle we can decode these, if we know what they are. @@ -215,7 +216,7 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) printk(BIOS_SPEW, "Dummy block\n"); for (i = 5; i < 18; i++) if (x[i] != 0x00) - has_valid_dummy_block = 0; + c->has_valid_dummy_block = 0; return 1; case 0xF7: /* TODO */ @@ -226,12 +227,12 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) int valid_cvt = 1; /* just this block */ printk(BIOS_SPEW, "CVT 3-byte code descriptor:\n"); if (x[5] != 0x01) { - has_valid_cvt = 0; + c->has_valid_cvt = 0; return 0; } for (i = 0; i < 4; i++) valid_cvt &= detailed_cvt_descriptor(out, x + 6 + (i * 3), (i == 0)); - has_valid_cvt &= valid_cvt; + c->has_valid_cvt &= valid_cvt; return 1; } case 0xF9: @@ -249,7 +250,7 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) case 0xFC: printk(BIOS_SPEW, "Monitor name: %s\n", extract_string(x + 5, - &has_valid_string_termination, + &c->has_valid_string_termination, 13)); return 1; case 0xFD: @@ -257,13 +258,13 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) int h_max_offset = 0, h_min_offset = 0; int v_max_offset = 0, v_min_offset = 0; int is_cvt = 0; - has_range_descriptor = 1; + c->has_range_descriptor = 1; out->range_class = ""; /* * XXX todo: implement feature flags, vtd blocks * XXX check: ranges are well-formed; block termination if no vtd */ - if (claims_one_point_four) { + if (c->claims_one_point_four) { if (x[4] & 0x02) { v_max_offset = 255; if (x[4] & 0x01) { @@ -277,7 +278,7 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) } } } else if (x[4]) { - has_valid_range_descriptor = 0; + c->has_valid_range_descriptor = 0; } /* @@ -289,8 +290,8 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) break; case 0x01: /* range limits only */ out->range_class = "bare limits"; - if (!claims_one_point_four) - has_valid_range_descriptor = 0; + if (!c->claims_one_point_four) + c->has_valid_range_descriptor = 0; break; case 0x02: /* secondary gtf curve */ out->range_class = "GTF with icing"; @@ -298,19 +299,19 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) case 0x04: /* cvt */ out->range_class = "CVT"; is_cvt = 1; - if (!claims_one_point_four) - has_valid_range_descriptor = 0; + if (!c->claims_one_point_four) + c->has_valid_range_descriptor = 0; break; default: /* invalid */ - has_valid_range_descriptor = 0; + c->has_valid_range_descriptor = 0; out->range_class = "invalid"; break; } if (x[5] + v_min_offset > x[6] + v_max_offset) - has_valid_range_descriptor = 0; + c->has_valid_range_descriptor = 0; if (x[7] + h_min_offset > x[8] + h_max_offset) - has_valid_range_descriptor = 0; + c->has_valid_range_descriptor = 0; printk(BIOS_SPEW, "Monitor ranges (%s): %d-%dHz V, %d-%dkHz H", out->range_class, x[5] + v_min_offset, x[6] + v_max_offset, @@ -318,8 +319,8 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) if (x[9]) printk(BIOS_SPEW, ", max dotclock %dMHz\n", x[9] * 10); else { - if (claims_one_point_four) - has_valid_max_dotclock = 0; + if (c->claims_one_point_four) + c->has_valid_max_dotclock = 0; printk(BIOS_SPEW, "\n"); } @@ -333,7 +334,7 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) printk(BIOS_SPEW, "Real max dotclock: %dKHz\n", (x[9] * 10000) - (raw_offset * 250)); if (raw_offset >= 40) - warning_excessive_dotclock_correction = 1; + c->warning_excessive_dotclock_correction = 1; } max_h_pixels = x[12] & 0x03; @@ -350,7 +351,7 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) x[14] & 0x10 ? "5:4" : "", x[14] & 0x08 ? "15:9" : ""); if (x[14] & 0x07) - has_valid_range_descriptor = 0; + c->has_valid_range_descriptor = 0; printk(BIOS_SPEW, "Preferred aspect ratio: "); switch((x[15] & 0xe0) >> 5) { @@ -369,7 +370,7 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) printk(BIOS_SPEW, "Supports CVT reduced blanking\n"); if (x[15] & 0x07) - has_valid_range_descriptor = 0; + c->has_valid_range_descriptor = 0; if (x[16] & 0xf0) { printk(BIOS_SPEW, "Supported display scaling:\n"); @@ -384,12 +385,12 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) } if (x[16] & 0x0f) - has_valid_range_descriptor = 0; + c->has_valid_range_descriptor = 0; if (x[17]) printk(BIOS_SPEW, "Preferred vertical refresh: %d Hz\n", x[17]); else - warning_zero_preferred_refresh = 1; + c->warning_zero_preferred_refresh = 1; } /* @@ -404,11 +405,11 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) * seems to be specified by SPWG: http://www.spwg.org/ */ printk(BIOS_SPEW, "ASCII string: %s\n", - extract_string(x + 5, &has_valid_string_termination, 13)); + extract_string(x + 5, &c->has_valid_string_termination, 13)); return 1; case 0xFF: printk(BIOS_SPEW, "Serial number: %s\n", - extract_string(x + 5, &has_valid_string_termination, 13)); + extract_string(x + 5, &c->has_valid_string_termination, 13)); return 1; default: printk(BIOS_SPEW, "Unknown monitor description type %d\n", x[3]); @@ -416,11 +417,11 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) } } - if (seen_non_detailed_descriptor && !in_extension) { - has_valid_descriptor_ordering = 0; + if (c->seen_non_detailed_descriptor && !in_extension) { + c->has_valid_descriptor_ordering = 0; } - if (! did_detailed_timing){ + if (! c->did_detailed_timing){ /* Edid contains pixel clock in terms of 10KHz */ out->pixel_clock = (x[0] + (x[1] << 8)) * 10; out->x_mm = (x[12] + ((x[14] & 0xF0) << 4)); @@ -461,7 +462,7 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) 64); printk(BIOS_SPEW, "Did detailed timing\n"); } - did_detailed_timing = 1; + c->did_detailed_timing = 1; switch ((x[17] & 0x18) >> 3) { case 0x00: out->syncmethod = " analog composite"; @@ -523,22 +524,22 @@ detailed_block(struct edid *out, unsigned char *x, int in_extension) static int do_checksum(unsigned char *x) { - printk(BIOS_SPEW, "Checksum: 0x%hhx", x[0x7f]); + int valid = 0; + printk(BIOS_SPEW, "Checksum: 0x%hx", x[0x7f]); { unsigned char sum = 0; int i; for (i = 0; i < 128; i++) sum += x[i]; if (sum) { - printk(BIOS_SPEW, " (should be 0x%hhx)", (unsigned char)(x[0x7f] - sum)); - has_valid_checksum = 0; + printk(BIOS_SPEW, " (should be 0x%hx)", (unsigned char)(x[0x7f] - sum)); } else { - has_valid_checksum = 1; + valid = 1; printk(BIOS_SPEW, " (valid)"); } } printk(BIOS_SPEW, "\n"); - return has_valid_checksum; + return valid; } /* CEA extension */ @@ -812,7 +813,7 @@ cea_block(struct edid *out, unsigned char *x) } static int -parse_cea(struct edid *out, unsigned char *x) +parse_cea(struct edid *out, unsigned char *x, struct edid_context *c) { int ret = 0; int version = x[1]; @@ -852,11 +853,10 @@ parse_cea(struct edid *out, unsigned char *x) for (detailed = x + offset; detailed + 18 < x + 127; detailed += 18) if (detailed[0]) - detailed_block(out, detailed, 1); + detailed_block(out, detailed, 1, c); } while (0); - do_checksum(x); - + c->has_valid_checksum &= do_checksum(x); return ret; } @@ -869,7 +869,7 @@ extension_version(struct edid *out, unsigned char *x) } static int -parse_extension(struct edid *out, unsigned char *x) +parse_extension(struct edid *out, unsigned char *x, struct edid_context *c) { int conformant_extension = 0; printk(BIOS_SPEW, "\n"); @@ -878,14 +878,14 @@ parse_extension(struct edid *out, unsigned char *x) case 0x02: printk(BIOS_SPEW, "CEA extension block\n"); extension_version(out, x); - conformant_extension = parse_cea(out, x); + conformant_extension = parse_cea(out, x, c); break; case 0x10: printk(BIOS_SPEW, "VTB extension block\n"); break; case 0x40: printk(BIOS_SPEW, "DI extension block\n"); break; case 0x50: printk(BIOS_SPEW, "LS extension block\n"); break; case 0x60: printk(BIOS_SPEW, "DPVL extension block\n"); break; case 0xF0: printk(BIOS_SPEW, "Block map\n"); break; - case 0xFF: printk(BIOS_SPEW, "Manufacturer-specific extension block\n"); break; + case 0xFF: printk(BIOS_SPEW, "Manufacturer-specific extension block\n"); default: printk(BIOS_SPEW, "Unknown extension block\n"); break; @@ -964,6 +964,16 @@ static void dump_breakdown(unsigned char *edid) int decode_edid(unsigned char *edid, int size, struct edid *out) { int analog, i; + struct edid_context c = { + .has_valid_cvt = 1, + .has_valid_dummy_block = 1, + .has_valid_descriptor_ordering = 1, + .has_valid_descriptor_pad = 1, + .has_valid_range_descriptor = 1, + .has_valid_max_dotclock = 1, + .has_valid_string_termination = 1, + .conformant = 1, + }; dump_breakdown(edid); @@ -971,8 +981,11 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) printk(BIOS_SPEW, "No header found\n"); return 1; } + memset(out, 0, sizeof(*out)); - manufacturer_name(out, edid + 0x08); + if (manufacturer_name(out, edid + 0x08)) + c.manufacturer_name_well_formed = 1; + out->model = (unsigned short)(edid[0x0A] + (edid[0x0B] << 8)); out->serial = (unsigned int)(edid[0x0C] + (edid[0x0D] << 8) + (edid[0x0E] << 16) + (edid[0x0F] << 24)); @@ -985,19 +998,19 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) /* XXX need manufacturer ID table */ if (edid[0x10] < 55 || edid[0x10] == 0xff) { - has_valid_week = 1; + c.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], + c.has_valid_year = 1; + printk(BIOS_SPEW, "Made week %hd of model year %hd\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 %d\n", + c.has_valid_year = 1; + printk(BIOS_SPEW, "Made week %hd of %hd\n", edid[0x10], edid[0x11] + 1990); out->week = edid[0x10]; out->year = edid[0x11] + 1990; @@ -1006,8 +1019,7 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) } } - - printk(BIOS_SPEW, "EDID version: %hhu.%hhu\n", edid[0x12], edid[0x13]); + printk(BIOS_SPEW, "EDID version: %hd.%hd\n", edid[0x12], edid[0x13]); out->version[0] = edid[0x12]; out->version[1] = edid[0x13]; @@ -1018,29 +1030,28 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) } switch (edid[0x13]) { case 4: - claims_one_point_four = 1; + c.claims_one_point_four = 1; case 3: - claims_one_point_three = 1; + c.claims_one_point_three = 1; case 2: - claims_one_point_two = 1; + c.claims_one_point_two = 1; default: break; } - claims_one_point_oh = 1; + c.claims_one_point_oh = 1; } /* display section */ - if (edid[0x14] & 0x80) { int conformance_mask; analog = 0; printk(BIOS_SPEW, "Digital display\n"); - if (claims_one_point_four) { + if (c.claims_one_point_four) { conformance_mask = 0; if ((edid[0x14] & 0x70) == 0x00) printk(BIOS_SPEW, "Color depth is undefined\n"); else if ((edid[0x14] & 0x70) == 0x70) - nonconformant_digital_display = 1; + c.nonconformant_digital_display = 1; else printk(BIOS_SPEW, "%d bits per primary color channel\n", ((edid[0x14] & 0x70) >> 3) + 4); @@ -1055,10 +1066,10 @@ 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; + c.nonconformant_digital_display = 1; } out->type = edid[0x14] & 0x0f; - } else if (claims_one_point_two) { + } else if (c.claims_one_point_two) { conformance_mask = 0x7E; if (edid[0x14] & 0x01) { printk(BIOS_SPEW, "DFP 1.x compatible TMDS\n"); @@ -1066,9 +1077,9 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) } else conformance_mask = 0x7F; - if (!nonconformant_digital_display) - nonconformant_digital_display = edid[0x14] & conformance_mask; - out->nonconformant = nonconformant_digital_display; + if (!c.nonconformant_digital_display) + c.nonconformant_digital_display = edid[0x14] & conformance_mask; + out->nonconformant = c.nonconformant_digital_display; } else { analog = 1; int voltage = (edid[0x14] & 0x60) >> 5; @@ -1082,7 +1093,7 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) voltage == 1 ? "0.714/0.286" : "0.7/0.3"); - if (claims_one_point_four) { + if (c.claims_one_point_four) { if (edid[0x14] & 0x10) printk(BIOS_SPEW, "Blank-to-black setup/pedestal\n"); else @@ -1108,7 +1119,7 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) edid[0x15], edid[0x16]); out->xsize_cm = edid[0x15]; out->ysize_cm = edid[0x16]; - } else if (claims_one_point_four && (edid[0x15] || edid[0x16])) { + } else if (c.claims_one_point_four && (edid[0x15] || edid[0x16])) { if (edid[0x15]) { /* edid[0x15] != 0 && edid[0x16] == 0 */ unsigned int ratio = 100000/(edid[0x15] + 99); printk(BIOS_SPEW, "Aspect ratio is %u.%03u (landscape)\n", @@ -1126,7 +1137,7 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) } if (edid[0x17] == 0xff) { - if (claims_one_point_four) + if (c.claims_one_point_four) printk(BIOS_SPEW, "Gamma is defined in an extension block\n"); else /* XXX Technically 1.3 doesn't say this... */ @@ -1162,7 +1173,7 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) 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; + c.has_preferred_timing = 1; } if (edid[0x18] & 0x01) printk(BIOS_SPEW, "Supports GTF timings within operating range\n"); @@ -1195,7 +1206,7 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) x = (b1 + 31) * 8; switch ((b2 >> 6) & 0x3) { case 0x00: - if (claims_one_point_three) + if (c.claims_one_point_three) y = x * 10 / 16; else y = x; @@ -1217,25 +1228,28 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) /* 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); + for (i = 0; i < 4; i++) { + c.has_valid_detailed_blocks &= detailed_block( + out, edid + 0x36 + i * 18, 0, &c); + if (i == 0 && c.has_preferred_timing && !c.did_detailed_timing) + { + /* not really accurate... */ + c.has_preferred_timing = 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; + c.has_valid_extension_count = 1; } else { - has_valid_extension_count = 1; + c.has_valid_extension_count = 1; } printk(BIOS_SPEW, "Checksum\n"); - do_checksum(edid); + c.has_valid_checksum = do_checksum(edid); /* EDID v2.0 has a larger blob (256 bytes) and may have some problem in * the extension parsing loop below. Since v2.0 was quickly deprecated @@ -1243,38 +1257,32 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) * that case now and can fix it when we need to use a real 2.0 panel. */ for(i = 128; 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_four) { - if (nonconformant_digital_display || - !has_valid_string_termination || - !has_valid_descriptor_pad || - !has_preferred_timing) - conformant = 0; - if (!conformant) + c.nonconformant_extension += + parse_extension(out, &edid[i], &c); + + if (c.claims_one_point_four) { + if (c.nonconformant_digital_display || + !c.has_valid_string_termination || + !c.has_valid_descriptor_pad || + !c.has_preferred_timing) + c.conformant = 0; + if (!c.conformant) printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.4!\n"); - if (nonconformant_digital_display) + if (c.nonconformant_digital_display) printk(BIOS_ERR, "\tDigital display field contains garbage: %x\n", - nonconformant_digital_display); - if (!has_valid_string_termination) + c.nonconformant_digital_display); + if (!c.has_valid_string_termination) printk(BIOS_ERR, "\tDetailed block string not properly terminated\n"); - if (!has_valid_descriptor_pad) + if (!c.has_valid_descriptor_pad) printk(BIOS_ERR, "\tInvalid descriptor block padding\n"); - if (!has_preferred_timing) + if (!c.has_preferred_timing) printk(BIOS_ERR, "\tMissing preferred timing\n"); - } else if (claims_one_point_three) { - if (nonconformant_digital_display || - !has_valid_string_termination || - !has_valid_descriptor_pad || - !has_preferred_timing) { - conformant = 0; + } else if (c.claims_one_point_three) { + if (c.nonconformant_digital_display || + !c.has_valid_string_termination || + !c.has_valid_descriptor_pad || + !c.has_preferred_timing) { + c.conformant = 0; } /** * According to E-EDID (EDIDv1.3), has_name_descriptor and @@ -1283,92 +1291,92 @@ int decode_edid(unsigned char *edid, int size, struct edid *out) * don't have them. As a workaround, we only print warning * messages. */ - if (!conformant) + if (!c.conformant) printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.3!\n"); - else if (!has_name_descriptor || !has_range_descriptor) + else if (!c.has_name_descriptor || !c.has_range_descriptor) printk(BIOS_WARNING, "WARNING: EDID block does NOT " "fully conform to EDID 1.3.\n"); - if (nonconformant_digital_display) + if (c.nonconformant_digital_display) printk(BIOS_ERR, "\tDigital display field contains garbage: %x\n", - nonconformant_digital_display); - if (!has_name_descriptor) + c.nonconformant_digital_display); + if (!c.has_name_descriptor) printk(BIOS_ERR, "\tMissing name descriptor\n"); - if (!has_preferred_timing) + if (!c.has_preferred_timing) printk(BIOS_ERR, "\tMissing preferred timing\n"); - if (!has_range_descriptor) + if (!c.has_range_descriptor) printk(BIOS_ERR, "\tMissing monitor ranges\n"); - if (!has_valid_descriptor_pad) /* Might be more than just 1.3 */ + if (!c.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 */ + if (!c.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_valid_string_termination) - conformant = 0; - if (!conformant) + } else if (c.claims_one_point_two) { + if (c.nonconformant_digital_display || + !c.has_valid_string_termination) + c.conformant = 0; + if (!c.conformant) printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.2!\n"); - if (nonconformant_digital_display) + if (c.nonconformant_digital_display) printk(BIOS_ERR, "\tDigital display field contains garbage: %x\n", - nonconformant_digital_display); - if (!has_valid_string_termination) + c.nonconformant_digital_display); + if (!c.has_valid_string_termination) printk(BIOS_ERR, "\tDetailed block string not properly terminated\n"); - } else if (claims_one_point_oh) { - if (seen_non_detailed_descriptor) - conformant = 0; - if (!conformant) + } else if (c.claims_one_point_oh) { + if (c.seen_non_detailed_descriptor) + c.conformant = 0; + if (!c.conformant) printk(BIOS_ERR, "EDID block does NOT conform to EDID 1.0!\n"); - if (seen_non_detailed_descriptor) + if (c.seen_non_detailed_descriptor) printk(BIOS_ERR, "\tHas descriptor blocks other than detailed timings\n"); } - 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; + if (c.nonconformant_extension || + !c.has_valid_checksum || + !c.has_valid_cvt || + !c.has_valid_year || + !c.has_valid_week || + !c.has_valid_detailed_blocks || + !c.has_valid_dummy_block || + !c.has_valid_extension_count || + !c.has_valid_descriptor_ordering || + !c.has_valid_range_descriptor || + !c.manufacturer_name_well_formed) { + c.conformant = 0; printk(BIOS_ERR, "EDID block does not conform at all!\n"); - if (nonconformant_extension) + if (c.nonconformant_extension) printk(BIOS_ERR, "\tHas %d nonconformant extension block(s)\n", - nonconformant_extension); - if (!has_valid_checksum) + c.nonconformant_extension); + if (!c.has_valid_checksum) printk(BIOS_ERR, "\tBlock has broken checksum\n"); - if (!has_valid_cvt) + if (!c.has_valid_cvt) printk(BIOS_ERR, "\tBroken 3-byte CVT blocks\n"); - if (!has_valid_year) + if (!c.has_valid_year) printk(BIOS_ERR, "\tBad year of manufacture\n"); - if (!has_valid_week) + if (!c.has_valid_week) printk(BIOS_ERR, "\tBad week of manufacture\n"); - if (!has_valid_detailed_blocks) + if (!c.has_valid_detailed_blocks) printk(BIOS_ERR, "\tDetailed blocks filled with garbage\n"); - if (!has_valid_dummy_block) + if (!c.has_valid_dummy_block) printk(BIOS_ERR, "\tDummy block filled with garbage\n"); - if (!has_valid_extension_count) + if (!c.has_valid_extension_count) printk(BIOS_ERR, "\tImpossible extension block count\n"); - if (!manufacturer_name_well_formed) + if (!c.manufacturer_name_well_formed) printk(BIOS_ERR, "\tManufacturer name field contains garbage\n"); - if (!has_valid_descriptor_ordering) + if (!c.has_valid_descriptor_ordering) printk(BIOS_ERR, "\tInvalid detailed timing descriptor ordering\n"); - if (!has_valid_range_descriptor) + if (!c.has_valid_range_descriptor) printk(BIOS_ERR, "\tRange descriptor contains garbage\n"); - if (!has_valid_max_dotclock) + if (!c.has_valid_max_dotclock) printk(BIOS_ERR, "\tEDID 1.4 block does not set max dotclock\n"); } - if (warning_excessive_dotclock_correction) + if (c.warning_excessive_dotclock_correction) printk(BIOS_ERR, "Warning: CVT block corrects dotclock by more than 9.75MHz\n"); - if (warning_zero_preferred_refresh) + if (c.warning_zero_preferred_refresh) printk(BIOS_ERR, "Warning: CVT block does not set preferred refresh rate\n"); - return !conformant; + return !c.conformant; } /* @@ -1447,14 +1455,10 @@ void set_vbe_mode_info_valid(struct edid *edid, uintptr_t fb_addr) * I'm not sure with grahpics you ever can. */ edid_fb.bits_per_pixel = edid->framebuffer_bits_per_pixel; - edid_fb.reserved_mask_pos = 0; - edid_fb.reserved_mask_size = 0; switch(edid->framebuffer_bits_per_pixel){ case 32: case 24: /* packed into 4-byte words */ - edid_fb.reserved_mask_pos = 24; - edid_fb.reserved_mask_size = 8; edid_fb.red_mask_pos = 16; edid_fb.red_mask_size = 8; edid_fb.green_mask_pos = 8; @@ -1477,6 +1481,8 @@ void set_vbe_mode_info_valid(struct edid *edid, uintptr_t fb_addr) return; } + edid_fb.reserved_mask_pos = 0; + edid_fb.reserved_mask_size = 0; vbe_valid = 1; } |