[PATCH v6 07/10] drm/bridge: it6505: fix HDCP CTS KSV list read with UNIGRAF DPR-100.

Dmitry Baryshkov dmitry.baryshkov at linaro.org
Sun Oct 20 13:54:27 UTC 2024


On Wed, Oct 16, 2024 at 03:54:19PM +0800, Hermes Wu via B4 Relay wrote:
> From: Hermes Wu <Hermes.wu at ite.com.tw>
> 
> When running the HDCP CTS test with UNIGRAF DPR-100.
> KSV list must be read from DP_AUX_HDCP_KSV_FIFO in an AUX request,
> and can not separate with multiple read requests.
> 
> The AUX operation command "CMD_AUX_GET_KSV_LIST" reads the KSV list
> with AUX FIFO and is able to read DP_AUX_HDCP_KSV_FIFO in an AUX request.
> 
> Add it6505_get_ksvlist() which uses CMD_AUX_GET_KSV_LIST operation
> to read the KSV list.
> 
> Signed-off-by: Hermes Wu <Hermes.wu at ite.com.tw>
> ---
>  drivers/gpu/drm/bridge/ite-it6505.c | 48 +++++++++++++++++++++++++++----------
>  1 file changed, 36 insertions(+), 12 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>

-- 
With best wishes
Dmitry


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