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| author | Todd Previte <tprevite@gmail.com> | 2014-11-04 23:17:35 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-11-05 14:03:22 +0100 |
| commit | e9cf6194ab0cdb8f40f1eca7b230751c2289557e (patch) | |
| tree | 9ba4a35167b2d05e9c0daa2daca995aed20802a7 /include/drm | |
| parent | drm: Remove compiler BUG_ON() test (diff) | |
| download | linux-e9cf6194ab0cdb8f40f1eca7b230751c2289557e.tar.xz linux-e9cf6194ab0cdb8f40f1eca7b230751c2289557e.zip | |
drm/dp: Add counters in the drm_dp_aux struct for I2C NACKs and DEFERs
These counters are used for Displayort compliance testing to detect error
conditions when executing tests 4.2.2.4 and 4.2.2.5 in the Displayport Link
CTS specificaiton. They determine whether to use the preferred/requested
mode or the failsafe mode during these tests.
V2:
- Addressed previous review feedback
- Updated commit message
- Changed from uint8_t to uint32_t
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Todd Previte <tprevite@gmail.com>
[danvet: s/uint32_t/unsigned/ for clearer intent. Also drop the i915
from the subject, it's all core stuff.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index afebb08eee3a..6041ad8c2f2d 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -530,6 +530,7 @@ struct drm_dp_aux { struct mutex hw_mutex; ssize_t (*transfer)(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg); + unsigned i2c_nack_count, i2c_defer_count; }; ssize_t drm_dp_dpcd_read(struct drm_dp_aux *aux, unsigned int offset, |