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[PATCH] Fix radeon DDC regression

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When radeonfb was changed to use the new "generic" ddc, a bit of
code initializing the GPIO lines was lost, causing it to not work
if the firmware didn't configure them properly, which seems to
happen on some cards.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Benjamin Herrenschmidt 2006-11-17 15:35:00 +11:00 committed by Linus Torvalds
parent 1b9bb3c14c
commit 4f71c5de19
1 changed files with 7 additions and 1 deletions
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8
drivers/video/aty/radeon_i2c.c
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@ -139,7 +139,13 @@ void radeon_delete_i2c_busses(struct radeonfb_info *rinfo)
int radeon_probe_i2c_connector(struct radeonfb_info *rinfo, int conn,
u8 **out_edid)
{
u8 *edid = fb_ddc_read(&rinfo->i2c[conn-1].adapter);
u32 reg = rinfo->i2c[conn-1].ddc_reg;
u8 *edid;
OUTREG(reg, INREG(reg) &
~(VGA_DDC_DATA_OUTPUT | VGA_DDC_CLK_OUTPUT));
edid = fb_ddc_read(&rinfo->i2c[conn-1].adapter);
if (out_edid)
*out_edid = edid;