Commit 4f71c5de authored Nov 17, 2006 by Benjamin Herrenschmidt Committed by Linus Torvalds Nov 16, 2006

[PATCH] Fix radeon DDC regression



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>

parent 1b9bb3c1

drivers/video/aty/radeon_i2c.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -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;