diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/aty/radeon_i2c.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/video/aty/radeon_i2c.c b/drivers/video/aty/radeon_i2c.c index 676754520099..869725a13c21 100644 --- a/drivers/video/aty/radeon_i2c.c +++ b/drivers/video/aty/radeon_i2c.c @@ -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; |