[PATCH 2/2] drm/radeon/kms: Use the standard VESA timeout for DDC channels
keithp at keithp.com
Sat Jan 28 17:34:05 PST 2012
On Sat, 28 Jan 2012 11:08:58 +0100, Jean Delvare <jdelvare at suse.de> wrote:
> The VESA specification suggests a 2.2 ms timeout on DDC channels.
> Use exactly that (as the i915 driver does) instead of hard-coding a
> jiffy count.
The Vesa spec seems to say 2ms; at least according to the DDC/CI spec
paragraph 6.6. usecs_to_jiffies rounds the value it gets up, so we
should never get an interval less than 2ms if we pass 2000us to it.
keith.packard at intel.com
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