diff options
| author | David Ung <davidu@nvidia.com> | 2014-03-26 15:35:37 -0700 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-22 08:51:29 +0300 |
| commit | e6853aafd4339dbf2992957ff2616ef7164bc9d4 (patch) | |
| tree | 5c0422657ba3f25006720d7d331b04c169af3548 /drivers/video | |
| parent | f474f0e1fbc8d0daa41f17b9a65466e7c7dfd170 (diff) | |
video: Check EDID for HDMI connection
Check EDID Vendor Specific Data Block bytes to see if the connection
is HDMI and set FB_MISC_HDMI.
Signed-off-by: David Ung <davidu@nvidia.com>
Signed-off-by: Christopher Freeman <cfreeman@nvidia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/core/fbmon.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c index c204ebe6187e..5b0e313849bd 100644 --- a/drivers/video/fbdev/core/fbmon.c +++ b/drivers/video/fbdev/core/fbmon.c @@ -1012,13 +1012,20 @@ void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs) while (pos < edid[2]) { u8 len = edid[pos] & 0x1f, type = (edid[pos] >> 5) & 7; pr_debug("Data block %u of %u bytes\n", type, len); - if (type == 2) + if (type == 2) { for (i = pos; i < pos + len; i++) { u8 idx = edid[pos + i] & 0x7f; svd[svd_n++] = idx; pr_debug("N%sative mode #%d\n", edid[pos + i] & 0x80 ? "" : "on-n", idx); } + } else if (type == 3 && len >= 3) { + /* Check Vendor Specific Data Block. For HDMI, + it is always 00-0C-03 for HDMI Licensing, LLC. */ + if (edid[pos + 1] == 3 && edid[pos + 2] == 0xc && + edid[pos + 3] == 0) + specs->misc |= FB_MISC_HDMI; + } pos += len + 1; } |