On Wednesday 18 November 2015 01:23 AM, Daniel Vetter wrote:
On Mon, Nov 02, 2015 at 06:25:10PM +0530, Shubhangi Shrivastava wrote:
This patch set cleans up DP detection logic to bring all DPCD
operations at one place and to create a clear demarcation
between handling of long and short pulses. This simplifies
fixing of sink count related detection for DP panels.
Patches:
1. First two patches clean up intel_dp_detect and form a new
function which will include all DPCD related operations.
2. Second patch splits up intel_dp_check_link_status to form
a new function which will handle short pulse requests.
3. Last three patches fixes the detection logic related to
sink count i.e detect changes in sink count and handle them
appropriately.
Note: this is tested on BXT with non-mst panels,
will get back ASAP with results for MST panels too.
Sivakumar and Ander are working on reorganizing all the DP hpd handling,
at least they have been before I went on vacation. I think it would make
sense to land that work first, before we start to apply functional fixes.
Please coordinate with them.
-Daniel
Yes.. The reorganization of DP HPD handling is in progress.
I am working with Siva on the same. :)
We have found certain bugs in MST related code, pointed out
by Ander. Once it is fixed, we will re-upload the patches.
Shubhangi Shrivastava (6):
drm/i915: Splitting intel_dp_detect
drm/i915: Cleaning up intel_dp_hpd_pulse
drm/i915: Splitting intel_dp_check_link_status
drm/i915: Save sink_count for tracking changes to it
drm/i915: read sink_count dpcd always
drm/i915: force full detect on sink count change
drivers/gpu/drm/i915/intel_dp.c | 170 +++++++++++++++++++++++++--------------
drivers/gpu/drm/i915/intel_drv.h | 1 +
2 files changed, 110 insertions(+), 61 deletions(-)
--
2.6.1
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