diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-06-24 12:17:28 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-06-24 14:39:27 +0200 |
| commit | af573dceef7b9a45d13192ec5abf29b73c78540e (patch) | |
| tree | 97ac1daeedf460ed737574ae2feaad2d284ed6cc /vgasrc/atiext.c | |
| parent | ae9a9796ec395e66ff0ed6d4484ea40ce85c0300 (diff) | |
| download | seabios-af573dceef7b9a45d13192ec5abf29b73c78540e.tar.gz | |
ati-vga: try vga ddc first
Try vga ddc bus before dvi ddc bus.
Return early in case we got valid data.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'vgasrc/atiext.c')
| -rw-r--r-- | vgasrc/atiext.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/vgasrc/atiext.c b/vgasrc/atiext.c index 901e82d0..71dfa859 100644 --- a/vgasrc/atiext.c +++ b/vgasrc/atiext.c @@ -299,6 +299,15 @@ static void ati_i2c_edid_radeon(void) SET_VGA(ati_i2c_bit_sda_out, 16); SET_VGA(ati_i2c_bit_sda_in, 8); + dprintf(1, "ati: reading edid blob (radeon vga) ... \n"); + SET_VGA(ati_i2c_reg, GPIO_VGA_DDC); + ati_i2c_edid(); + valid = (GET_GLOBAL(VBE_edid[0]) == 0x00 && + GET_GLOBAL(VBE_edid[1]) == 0xff); + dprintf(1, "ati: ... %s\n", valid ? "good" : "invalid"); + if (valid) + return; + dprintf(1, "ati: reading edid blob (radeon dvi) ... \n"); SET_VGA(ati_i2c_reg, GPIO_DVI_DDC); ati_i2c_edid(); |