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Add trace points across the MSM DP driver to help debug
interop issues.
Changes in v2:
- Got rid of redundant log messages.
- Added %#x instead of 0x%x wherever required.
- Got rid of __func__ calls in debug messages.
- Added newline wherever missing.
Changes in v3:
- Got rid of redundant log messages.
- Unstuck colon from printf specifier in various places.
Changes in v4:
- Changed goto statement and used if else-if
Changes in v5:
- Changed if else if statement,
to not overwrite the ret variable multiple times.
Changes in v6:
- Changed a wrong log message.
Signed-off-by: Maitreyee Rao <maitreye@codeaurora.org>
Link: https://lore.kernel.org/r/1627346298-11528-1-git-send-email-maitreye@codeaurora.org
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Some dongle will not clear LINK_STATUS_UPDATED bit after
DPCD read which cause link training failed. This patch
just read 6 bytes of DPCD link status from sink and return
without checking LINK_STATUS_UPDATED bit.
Only 8 bits are used to represent link rate at sinker DPCD.
The really link rate is 2.7Mb times the 8 bits value.
For example, 0x0A at DPCD is equal to 2.7Gb (10 * 2.7Mb).
This patch also convert 8 bits value of DPCD to really link
rate to fix worng link rate error during phy compliance test.
Fixes: 6625e2637d ("drm/msm/dp: DisplayPort PHY compliance tests fixup")
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Bandwidth code was being used as test link rate. Fix this by converting
bandwidth code to test link rate
Do not reset voltage and pre-emphasis level during IRQ HPD attention
interrupt. Also fix pre-emphasis parsing during test link status process
Signed-off-by: Tanmay Shah <tanmay@codeaurora.org>
Fixes: 8ede2ecc3e ("drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets")
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
No need to fix the number of resolutions to one during the video
pattern CTS test. The userspace test client will handle both
the hotplug as well as picking the right resolution for the test.
Changes in v2: rebase on top of latest patchset of dependency
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
add event thread to execute events serially from event queue. Also
timeout mode is supported which allow an event be deferred to be
executed at later time. Both link and phy compliant tests had been
done successfully.
Changes in v2:
-- Fix potential deadlock by removing redundant connect_mutex
-- Check and enable link clock during modeset
-- Drop unused code and fix function prototypes.
-- set sink power to normal operation state (D0) before DPCD read
Changes in v3:
-- push idle pattern at main link before timing generator off
-- add timeout handles for both connect and disconnect
Changes in v4:
-- add ST_SUSPEND_PENDING to handles suspend/modeset test operations
-- clear dp phy aux interrupt status when ERR_DPPHY_AUX error
-- send segment addr during edid read
-- clear bpp depth before MISC register write
Changes in v5:
-- add ST_SUSPENDED to fix crash at resume
Changes in v6:
-- at msm_dp_display_enable() do not return until resume_done to avoid
kms commit timeout
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
