[PATCH 2/3] drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs.

2011-06-14 Thread Dave Airlie
From: Dave Airlie Some RS690 chipsets seem to end up with floating connectors, either a DVI connector isn't actually populated, or an add-in HDMI card is available but not installed. In this case we seem to get a NULL byte response for each byte of the i2c transaction, so we detect this case and

[PATCH 2/3] drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs.

2011-06-14 Thread Alex Deucher
On Tue, Jun 14, 2011 at 2:13 AM, Dave Airlie wrote: > From: Dave Airlie > > Some RS690 chipsets seem to end up with floating connectors, either > a DVI connector isn't actually populated, or an add-in HDMI card > is available but not installed. In this case we seem to get a NULL byte > response f

Re: [PATCH 2/3] drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs.

2011-06-13 Thread Alex Deucher
On Tue, Jun 14, 2011 at 2:13 AM, Dave Airlie wrote: > From: Dave Airlie > > Some RS690 chipsets seem to end up with floating connectors, either > a DVI connector isn't actually populated, or an add-in HDMI card > is available but not installed. In this case we seem to get a NULL byte > response f

[PATCH 2/3] drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs.

2011-06-13 Thread Dave Airlie
From: Dave Airlie Some RS690 chipsets seem to end up with floating connectors, either a DVI connector isn't actually populated, or an add-in HDMI card is available but not installed. In this case we seem to get a NULL byte response for each byte of the i2c transaction, so we detect this case and