hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

drm/nv50: fix duallink_possible calculation for DCB 4.0 cards 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-05-28 09:39:11 +10:00
parent 73db4bedc5
commit 23484874e6
1 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/nouveau/nouveau_bios.c
View File

@ -5536,12 +5536,6 @@ parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb,
entry->bus = (conn >> 16) & 0xf;
entry->location = (conn >> 20) & 0x3;
entry->or = (conn >> 24) & 0xf;
/*
* Normal entries consist of a single bit, but dual link has the
* next most significant bit set too
*/
entry->duallink_possible =
((1 << (ffs(entry->or) - 1)) * 3 == entry->or);
switch (entry->type) {
case OUTPUT_ANALOG:
@ -5625,6 +5619,16 @@ parse_dcb20_entry(struct drm_device *dev, struct dcb_table *dcb,
break;
}
if (dcb->version < 0x40) {
/* Normal entries consist of a single bit, but dual link has
* the next most significant bit set too
*/
entry->duallink_possible =
((1 << (ffs(entry->or) - 1)) * 3 == entry->or);
} else {
entry->duallink_possible = (entry->sorconf.link == 3);
}
/* unsure what DCB version introduces this, 3.0? */
if (conf & 0x100000)
entry->i2c_upper_default = true;