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drm/nv50: respect LVDS link count from EDID on SPWG panels

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-04-18 10:49:03 +10:00
parent 8c3f6bb970
commit b23b9e7109
1 changed files with 15 additions and 3 deletions
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18
drivers/gpu/drm/nouveau/nv50_display.c
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@ -517,13 +517,25 @@ nv50_display_script_select(struct drm_device *dev, struct dcb_entry *dcb,
if (bios->fp.if_is_24bit)
script |= 0x0200;
} else {
/* determine number of lvds links */
if (nv_connector && nv_connector->edid &&
nv_connector->dcb->type == DCB_CONNECTOR_LVDS_SPWG) {
/* http://www.spwg.org */
if (((u8 *)nv_connector->edid)[121] == 2)
script |= 0x0100;
} else
if (pxclk >= bios->fp.duallink_transition_clk) {
script |= 0x0100;
}
/* determine panel depth */
if (script & 0x0100) {
if (bios->fp.strapless_is_24bit & 2)
script |= 0x0200;
} else
if (bios->fp.strapless_is_24bit & 1)
script |= 0x0200;
} else {
if (bios->fp.strapless_is_24bit & 1)
script |= 0x0200;
}
if (nv_connector && nv_connector->edid &&
(nv_connector->edid->revision >= 4) &&