There are lots of failure items while running HDCP CTS using UNIGRAF DPR-100.
In Order to fix those failures, HDCP flow needs to be changed.
The DisplayPort AUX protocol supports I2C transport.
In Order to support MCCS via the aux channel, the aux-i2c operation is added.
v6->v7
-[3/10] add header <linux/bitfield.h> included
links:
https://lore.kernel.org/all/20241016-upstream-v6-v6-0-4d93a0c46...@ite.com.tw/
v5->v6:
-keep the commit message wrapped at 72-75 chars.
-[10/10] fix return variable being used without being initialized
v4->v5:
-add more messages for changes.
-[2/10] modified AUX transfer data size judgment.
change for-loop to do-while.
-[7/10] change for-loop to do-while.
-[9/10] change wait timer with timer_after()
links:
https://lore.kernel.org/all/20240926074755.22176-4-hermes...@ite.com.tw/
https://lore.kernel.org/all/20240926075134.22394-1-hermes...@ite.com.tw/
v3->v4:
-split changes into patches.
v2->v3:
-split aux read KSV function to a patch.
-[1/3] new in v3
-[2/3] add description of patch
v1->v2:
- ignored.
To: Andrzej Hajda <andrzej.ha...@intel.com>
To: Neil Armstrong <neil.armstr...@linaro.org>
To: Robert Foss <rf...@kernel.org>
To: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
To: Jonas Karlman <jo...@kwiboo.se>
To: Jernej Skrabec <jernej.skra...@gmail.com>
To: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
To: Maxime Ripard <mrip...@kernel.org>
To: Thomas Zimmermann <tzimmerm...@suse.de>
To: David Airlie <airl...@gmail.com>
To: Simona Vetter <sim...@ffwll.ch>
To: AngeloGioacchino Del Regno <angelogioacchino.delre...@collabora.com>
To: Hermes Wu <hermes...@ite.com.tw>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-ker...@vger.kernel.org
Cc: Pin-yen Lin <treapk...@chromium.org>
Cc: Kenneth Hung <kenneth.h...@ite.com.tw>
Cc: Pet Weng <pet.w...@ite.com.tw>
Change-Id: I7f14eeb18ae70b17ef7e1a8622c590427b0ff2ed
Signed-off-by: Hermes Wu <hermes...@ite.com.tw>
---
Hermes Wu (10):
drm/bridge: it6505: Change definition of AUX_FIFO_MAX_SIZE
drm/bridge: it6505: improve AUX operation for edid read
drm/bridge: it6505: add AUX operation for HDCP KSV list read
drm/bridge: it6505: Change definition MAX_HDCP_DOWN_STREAM_COUNT
drm/bridge: it6505: fix HDCP Bstatus check
drm/bridge: it6505: fix HDCP encryption when R0 ready
drm/bridge: it6505: fix HDCP CTS KSV list read with UNIGRAF DPR-100.
drm/bridge: it6505: fix HDCP CTS compare V matching
drm/bridge: it6505: fix HDCP CTS KSV list wait timer
drm/bridge: it6505: add I2C functionality on AUX
drivers/gpu/drm/bridge/ite-it6505.c | 335 ++++++++++++++++++++++++++++++------
1 file changed, 278 insertions(+), 57 deletions(-)
---
base-commit: 4d1c251e8889b4629789425fe85adfc6d39666ac
change-id: 20241101-v7-upstream-75ead2f2f567
Best regards,
--
Hermes Wu <hermes...@ite.corp-partner.google.com>
