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| author | Antonino A. Daplas <adaplas@gmail.com> | 2005-09-09 13:04:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 13:57:59 -0700 |
| commit | 094bb659f53b6d90aab6067268d6d14f1f352d30 (patch) | |
| tree | 37f2e11d4c0345bb7b84ec99f50ff77bd2f395a3 /drivers | |
| parent | 13776711ce4b234b5ad153e55e8b5d6703c6b1ef (diff) | |
| download | linux-094bb659f53b6d90aab6067268d6d14f1f352d30.tar.gz linux-094bb659f53b6d90aab6067268d6d14f1f352d30.tar.bz2 linux-094bb659f53b6d90aab6067268d6d14f1f352d30.zip | |
[PATCH] nvidiafb: Fallback to firmware EDID
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/nvidia/nv_i2c.c | 16 | ||||
| -rw-r--r-- | drivers/video/nvidia/nv_proto.h | 2 | ||||
| -rw-r--r-- | drivers/video/nvidia/nv_setup.c | 6 |
3 files changed, 16 insertions, 8 deletions
diff --git a/drivers/video/nvidia/nv_i2c.c b/drivers/video/nvidia/nv_i2c.c index 1a91bffdda26..ace484fa61ce 100644 --- a/drivers/video/nvidia/nv_i2c.c +++ b/drivers/video/nvidia/nv_i2c.c @@ -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; } diff --git a/drivers/video/nvidia/nv_proto.h b/drivers/video/nvidia/nv_proto.h index 42847ce1b8dd..cac44fc7f587 100644 --- a/drivers/video/nvidia/nv_proto.h +++ b/drivers/video/nvidia/nv_proto.h @@ -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(...) diff --git a/drivers/video/nvidia/nv_setup.c b/drivers/video/nvidia/nv_setup.c index 0bbdca2e0f91..11c84178f420 100644 --- a/drivers/video/nvidia/nv_setup.c +++ b/drivers/video/nvidia/nv_setup.c @@ -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; |