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[PATCH] nvidiafb: Fallback to firmware EDID

Browse source 
If nvidiafb fails to probe the EDID block, get the EDID from the BIOS.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Antonino A. Daplas 2005-09-09 13:04:36 -07:00 committed by Linus Torvalds
parent 13776711ce
commit 094bb659f5
3 changed files with 16 additions and 8 deletions
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16
drivers/video/nvidia/nv_i2c.c
View file

@ -194,8 +194,9 @@ static u8 *nvidia_do_probe_i2c_edid(struct nvidia_i2c_chan *chan)
return NULL;
}
int nvidia_probe_i2c_connector(struct nvidia_par *par, int conn, u8 **out_edid)
int nvidia_probe_i2c_connector(struct fb_info *info, int conn, u8 **out_edid)
{
struct nvidia_par *par = info->par;
u8 *edid = NULL;
int i;
@ -205,10 +206,17 @@ int nvidia_probe_i2c_connector(struct nvidia_par *par, int conn, u8 **out_edid)
if (edid)
break;
}
if (!edid && conn == 1) {
/* try to get from firmware */
edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
if (edid)
memcpy(edid, fb_firmware_edid(info->device),
EDID_LENGTH);
}
if (out_edid)
*out_edid = edid;
if (!edid)
return 1;
return 0;
return (edid) ? 0 : 1;
}

2
drivers/video/nvidia/nv_proto.h
View file

@ -34,7 +34,7 @@ void NVLockUnlock(struct nvidia_par *par, int);
#if defined(CONFIG_FB_NVIDIA_I2C) || defined (CONFIG_PPC_OF)
void nvidia_create_i2c_busses(struct nvidia_par *par);
void nvidia_delete_i2c_busses(struct nvidia_par *par);
int nvidia_probe_i2c_connector(struct nvidia_par *par, int conn,
int nvidia_probe_i2c_connector(struct fb_info *info, int conn,
u8 ** out_edid);
#else
#define nvidia_create_i2c_busses(...)

6
drivers/video/nvidia/nv_setup.c
View file

@ -401,7 +401,7 @@ void NVCommonSetup(struct fb_info *info)
nvidia_create_i2c_busses(par);
if (!par->twoHeads) {
par->CRTCnumber = 0;
nvidia_probe_i2c_connector(par, 1, &edidA);
nvidia_probe_i2c_connector(info, 1, &edidA);
if (edidA && !fb_parse_edid(edidA, &var)) {
printk("nvidiafb: EDID found from BUS1\n");
monA = &monitorA;
@ -488,14 +488,14 @@ void NVCommonSetup(struct fb_info *info)
oldhead = NV_RD32(par->PCRTC0, 0x00000860);
NV_WR32(par->PCRTC0, 0x00000860, oldhead | 0x00000010);
nvidia_probe_i2c_connector(par, 1, &edidA);
nvidia_probe_i2c_connector(info, 1, &edidA);
if (edidA && !fb_parse_edid(edidA, &var)) {
printk("nvidiafb: EDID found from BUS1\n");
monA = &monitorA;
fb_edid_to_monspecs(edidA, monA);
}
nvidia_probe_i2c_connector(par, 2, &edidB);
nvidia_probe_i2c_connector(info, 2, &edidB);
if (edidB && !fb_parse_edid(edidB, &var)) {
printk("nvidiafb: EDID found from BUS2\n");
monB = &monitorB;