diff options
| author | Adam Jackson <ajax@redhat.com> | 2007-12-28 15:00:41 -0500 |
|---|---|---|
| committer | Adam Jackson <ajax@redhat.com> | 2007-12-28 16:53:16 -0500 |
| commit | a948216dccb5ee577a50a42035dc9bc49d0a00c6 (patch) | |
| tree | 8227f0e8b640f3c264658d91ba48cee3201cc876 /hw/xfree86/ddc/interpret_edid.c | |
| parent | f6df66cc89bcd0a0be2e7bca05839fdd428c1d4c (diff) | |
EDID 1.4: Decode CVT 3-byte codes and add them to the mode pool.
Section 3.10.3.8: CVT 3 Byte Code Descriptor Definition.
Diffstat (limited to 'hw/xfree86/ddc/interpret_edid.c')
| -rw-r--r-- | hw/xfree86/ddc/interpret_edid.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/hw/xfree86/ddc/interpret_edid.c b/hw/xfree86/ddc/interpret_edid.c index ecec2b039..982a502fd 100644 --- a/hw/xfree86/ddc/interpret_edid.c +++ b/hw/xfree86/ddc/interpret_edid.c @@ -175,6 +175,34 @@ get_established_timing_section(Uchar *c, struct established_timings *r) } static void +get_cvt_timing_section(Uchar *c, struct cvt_timings *r) +{ + int i; + + for (i = 0; i < 4; i++) { + if (c[0] && c[1] && c[2]) { + r[i].height = (c[0] + ((c[1] & 0xF0) << 8) + 1) * 2; + switch (c[1] & 0xc0) { + case 0x00: r[i].width = r[i].height * 4 / 3; break; + case 0x40: r[i].width = r[i].height * 16 / 9; break; + case 0x80: r[i].width = r[i].height * 16 / 10; break; + case 0xc0: r[i].width = r[i].height * 15 / 9; break; + } + switch (c[2] & 0x60) { + case 0x00: r[i].rate = 50; break; + case 0x20: r[i].rate = 60; break; + case 0x40: r[i].rate = 75; break; + case 0x60: r[i].rate = 85; break; + } + r[i].rates = c[2] & 0x1f; + } else { + return; + } + c += 3; + } +} + +static void get_std_timing_section(Uchar *c, struct std_timings *r, struct edid_version *v) { @@ -232,6 +260,7 @@ get_dt_md_section(Uchar *c, struct edid_version *ver, break; case CVT_3BYTE_DATA: det_mon[i].type = DS_CVT; + get_cvt_timing_section(c, det_mon[i].section.cvt); break; case ADD_EST_TIMINGS: det_mon[i].type = DS_EST_III; |