[Intel-gfx] [PATCH 2/2]IGD: workaround i2c bus issue in gfx driver side
eric at anholt.net
Tue Apr 14 01:33:26 CEST 2009
On Tue, 2009-04-07 at 11:02 +0800, Shaohua Li wrote:
> In IGD, DPCUNIT_CLOCK_GATE_DISABLE bit should be set, otherwise i2c
> access will be wrong.
Not sure here, if it might be easier (and more obvious what's going on)
to just wrap the native DDC bus that's implemented with getbits with a
IGD wrapper that sets the gating between start and stop. i830_sdvo.c
has an example of doing this.
Was the failure with having the gating off reproducible (wondering about
that for both of these patches)
eric at anholt.net eric.anholt at intel.com
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