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yaml
---
r: 39277
b: refs/heads/master
c: 7e49109
h: refs/heads/master
i:
  39275: f51c405
v: v3
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Andrew Morton authored and Linus Torvalds committed Oct 11, 2006
1 parent 3c961cc commit fb47073
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Showing 3 changed files with 43 additions and 5 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 53a5fbdc2dff55161a206ed1a1385a8fa8055c34
refs/heads/master: 7e491092e442b3f8c0d90d470b398fdb74703ec7
1 change: 0 additions & 1 deletion trunk/drivers/video/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -701,7 +701,6 @@ config FB_NVIDIA
depends on FB && PCI
select I2C_ALGOBIT if FB_NVIDIA_I2C
select I2C if FB_NVIDIA_I2C
select FB_DDC if FB_NVIDIA_I2C
select FB_MODE_HELPERS
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
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45 changes: 42 additions & 3 deletions trunk/drivers/video/nvidia/nv_i2c.c
Original file line number Diff line number Diff line change
Expand Up @@ -160,12 +160,51 @@ 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;

edid = fb_ddc_read(&par->chan[conn - 1].adapter);
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 (!edid && conn == 1) {
/* try to get from firmware */
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