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authorAntonino A. Daplas <adaplas@gmail.com>2007-05-08 00:37:27 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 11:15:26 -0700
commit66fd14120edea89d353fac0649e9ec0045ec958f (patch)
tree193693e3081e0f43783a190dfaa51fb8561a7511 /drivers/video/nvidia
parent71c6efd9930bd87249d007120425341d1293303d (diff)
downloadlinux-66fd14120edea89d353fac0649e9ec0045ec958f.tar.gz
nvidiafb: bring back generic ddc reading
Make nvidiafb use fb_ddc_read(). This patch was submitted before but was reverted due to problems in a non-x86 platform. This includes a fix for that where ddc reading is bypassed if there is no DDC bus (duh). Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/nvidia')
-rw-r--r--drivers/video/nvidia/nv_i2c.c44
1 files changed, 2 insertions, 42 deletions
diff --git a/drivers/video/nvidia/nv_i2c.c b/drivers/video/nvidia/nv_i2c.c
index b8588973e40..b91d4045431 100644
--- a/drivers/video/nvidia/nv_i2c.c
+++ b/drivers/video/nvidia/nv_i2c.c
@@ -70,8 +70,6 @@ static int nvidia_gpio_getscl(void *data)
if (VGA_RD08(par->PCIO, 0x3d5) & 0x04)
val = 1;
- val = VGA_RD08(par->PCIO, 0x3d5);
-
return val;
}
@@ -159,51 +157,13 @@ void nvidia_delete_i2c_busses(struct nvidia_par *par)
}
-static u8 *nvidia_do_probe_i2c_edid(struct nvidia_i2c_chan *chan)
-{
- u8 start = 0x0;
- struct i2c_msg msgs[] = {
- {
- .addr = 0x50,
- .len = 1,
- .buf = &start,
- }, {
- .addr = 0x50,
- .flags = I2C_M_RD,
- .len = EDID_LENGTH,
- },
- };
- u8 *buf;
-
- if (!chan->par)
- return NULL;
-
- buf = kmalloc(EDID_LENGTH, GFP_KERNEL);
- if (!buf) {
- dev_warn(&chan->par->pci_dev->dev, "Out of memory!\n");
- return NULL;
- }
- msgs[1].buf = buf;
-
- if (i2c_transfer(&chan->adapter, msgs, 2) == 2)
- return buf;
- dev_dbg(&chan->par->pci_dev->dev, "Unable to read EDID block.\n");
- kfree(buf);
- return NULL;
-}
-
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;
- for (i = 0; i < 3; i++) {
- /* Do the real work */
- edid = nvidia_do_probe_i2c_edid(&par->chan[conn - 1]);
- if (edid)
- break;
- }
+ if (par->chan[conn - 1].par)
+ edid = fb_ddc_read(&par->chan[conn - 1].adapter);
if (!edid && conn == 1) {
/* try to get from firmware */