Re: [PATCH i-g-t 2/4] lib/unigraf: Add HDCP management

[Louis Chauvet <louis.chauvet@bootlin.com>]

On 7/31/26 20:21, Louis Chauvet wrote:
> From: fomys <fomys@google.com>

Tiny mistake on this patch, that indeed me. I will fix it for v2.

> Unigraf is able to emulate HDCP, so add few helpers to enable/disable
> it.
> 
> Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
> ---
>   lib/vendor/unigraf/unigraf.c | 23 ++++++++++++++++++++++-
>   lib/vendor/unigraf/unigraf.h |  4 ++++
>   2 files changed, 26 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/vendor/unigraf/unigraf.c b/lib/vendor/unigraf/unigraf.c
> index 30ee3c72bc74..5b416f605428 100644
> --- a/lib/vendor/unigraf/unigraf.c
> +++ b/lib/vendor/unigraf/unigraf.c
> @@ -549,9 +549,10 @@ void unigraf_reset(void)
>   	unigraf_set_mst_stream_count(1);
>   	unigraf_set_sst();
>   	unigraf_load_default_edid();
> -	unigraf_hpd_assert();
>   	unigraf_set_max_lane_count(4);
>   	unigraf_set_max_link_rate(UNIGRAF_RATE_8_10_GHZ);
> +	unigraf_enable_hdcp();
> +	unigraf_hpd_assert();
>   }
>   
>   /**
> @@ -911,3 +912,23 @@ int unigraf_rate_to_kbs(enum unigraf_rate rate)
>   		return 0;
>   	}
>   }
> +
> +/**
> + * unigraf_enable_hdcp - Enable HDCP 2 support
> + *
> + * Unigraf is able to load production keys, but this will disable all recording
> + * features.
> + */
> +void unigraf_enable_hdcp(void)
> +{
> +	unigraf_write_u32(TSI_HDCP_2X_COMMAND_W, H2_SINK_LOAD_PROD_KEYS);
> +	unigraf_write_u32(TSI_HDCP_2X_COMMAND_W, H2_SINK_SET_CAPABLE);
> +}
> +
> +/**
> + * unigraf_disable_hdcp - Disable HDCP support
> + */
> +void unigraf_disable_hdcp(void)
> +{
> +	unigraf_write_u32(TSI_HDCP_2X_COMMAND_W, H2_SINK_CLEAR_CAPABLE);
> +}
> diff --git a/lib/vendor/unigraf/unigraf.h b/lib/vendor/unigraf/unigraf.h
> index 1570be3feb96..498a2d4daab3 100644
> --- a/lib/vendor/unigraf/unigraf.h
> +++ b/lib/vendor/unigraf/unigraf.h
> @@ -103,4 +103,8 @@ uint32_t unigraf_get_lt_rate(void);
>   
>   uint32_t unigraf_get_lt_lane_count(void);
>   
> +void unigraf_enable_hdcp(void);
> +
> +void unigraf_disable_hdcp(void);
> +
>   #endif // UNIGRAF_H
>