[Intel-gfx] [RFC] drm/hdcp: Max MST content streams

[Jani Nikula]

On Tue, 20 Oct 2020, Maarten Lankhorst <maarten.lankhorst at linux.intel.com> wrote:
> Op 20-10-2020 om 11:42 schreef Jani Nikula:
>> On Mon, 19 Oct 2020, Anshuman Gupta <anshuman.gupta at intel.com> wrote:
>>> Let's define Maximum MST content streams up to four
>>> generically which can be supported by modern display
>>> controllers.
>>>
>>> Cc: Sean Paul <seanpaul at chromium.org>
>>> Cc: Ramalingam C <ramalingam.c at intel.com>
>>> Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
>> Hey drm-misc maintainers,
>>
>> I'd like to get an ack to merge this via drm-intel as part of [1].
>>
>> Thanks,
>> Jani.
>>
>>
>>
>> [1] http://lore.kernel.org/r/20201014045252.13608-1-anshuman.gupta@intel.com
>>
>>
>>
>>> ---
>>>  include/drm/drm_hdcp.h | 8 ++++----
>>>  1 file changed, 4 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
>>> index fe58dbb46962..ac22c246542a 100644
>>> --- a/include/drm/drm_hdcp.h
>>> +++ b/include/drm/drm_hdcp.h
>>> @@ -101,11 +101,11 @@
>>>  
>>>  /* Following Macros take a byte at a time for bit(s) masking */
>>>  /*
>>> - * TODO: This has to be changed for DP MST, as multiple stream on
>>> - * same port is possible.
>>> - * For HDCP2.2 on HDMI and DP SST this value is always 1.
>>> + * TODO: HDCP_2_2_MAX_CONTENT_STREAMS_CNT is based upon actual
>>> + * H/W MST streams capacity.
>>> + * This required to be moved out to platform specific header.
>>>   */
>>> -#define HDCP_2_2_MAX_CONTENT_STREAMS_CNT	1
>>> +#define HDCP_2_2_MAX_CONTENT_STREAMS_CNT	4
>>>  #define HDCP_2_2_TXCAP_MASK_LEN			2
>>>  #define HDCP_2_2_RXCAPS_LEN			3
>>>  #define HDCP_2_2_RX_REPEATER(x)			((x) & BIT(0))
>
> Well since it's such a small change..
>
> Acked-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>

Thanks.

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center