Re: [PATCH v12 6/8] drm/i915/display: Add state checker for Adaptive Sync SDP

["Nautiyal, Ankit K" <ankit.k.nautiyal@xxxxxxxxx>]

On 2/28/2024 8:08 PM, Mitul Golani wrote:
> Enable infoframe and add state checker for Adaptive Sync
> SDP enablement.
>
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@xxxxxxxxx>
> ---
>   drivers/gpu/drm/i915/display/intel_display.c | 46 ++++++++++++++++++++
>   drivers/gpu/drm/i915/display/intel_dp.c      |  2 +
>   2 files changed, 48 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 00ac65a14029..be0a5fae4e58 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -4781,6 +4781,17 @@ intel_compare_dp_vsc_sdp(const struct drm_dp_vsc_sdp *a,
>   		a->content_type == b->content_type;
>   }
>   
> +static bool
> +intel_compare_dp_as_sdp(const struct drm_dp_as_sdp *a,
> +			const struct drm_dp_as_sdp *b)
> +{
> +	return a->vtotal == b->vtotal &&
> +		a->target_rr == b->target_rr &&
> +		a->duration_incr_ms == b->duration_incr_ms &&
> +		a->duration_decr_ms == b->duration_decr_ms &&
> +		a->mode == b->mode;
> +}
> +
>   static bool
>   intel_compare_buffer(const u8 *a, const u8 *b, size_t len)
>   {
> @@ -4836,6 +4847,30 @@ pipe_config_dp_vsc_sdp_mismatch(struct drm_i915_private *i915,
>   	drm_dp_vsc_sdp_log(&p, b);
>   }
>   
> +static void
> +pipe_config_dp_as_sdp_mismatch(struct drm_i915_private *i915,
> +			       bool fastset, const char *name,
> +			       const struct drm_dp_as_sdp *a,
> +			       const struct drm_dp_as_sdp *b)
> +{
> +	struct drm_printer p;
> +
> +	if (fastset) {
> +		p = drm_dbg_printer(&i915->drm, DRM_UT_KMS, NULL);
> +
> +		drm_printf(&p, "fastset requirement not met in %s dp sdp\n", name);
> +	} else {
> +		p = drm_err_printer(&i915->drm, NULL);
> +
> +		drm_printf(&p, "mismatch in %s dp sdp\n", name);
> +	}
> +
> +	drm_printf(&p, "expected:\n");
> +	drm_dp_as_sdp_log(&p, a);
> +	drm_printf(&p, "found:\n");
> +	drm_dp_as_sdp_log(&p, b);
> +}
> +
>   /* Returns the length up to and including the last differing byte */
>   static size_t
>   memcmp_diff_len(const u8 *a, const u8 *b, size_t len)
> @@ -5089,6 +5124,16 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
>   	} \
>   } while (0)
>   
> +#define PIPE_CONF_CHECK_DP_AS_SDP(name) do { \
> +	if (!intel_compare_dp_as_sdp(&current_config->infoframes.name, \
> +				      &pipe_config->infoframes.name)) { \
> +		pipe_config_dp_as_sdp_mismatch(dev_priv, fastset, __stringify(name), \
> +						&current_config->infoframes.name, \
> +						&pipe_config->infoframes.name); \
> +		ret = false; \
> +	} \
> +} while (0)
> +
>   #define PIPE_CONF_CHECK_BUFFER(name, len) do { \
>   	BUILD_BUG_ON(sizeof(current_config->name) != (len)); \
>   	BUILD_BUG_ON(sizeof(pipe_config->name) != (len)); \
> @@ -5270,6 +5315,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
>   	PIPE_CONF_CHECK_INFOFRAME(hdmi);
>   	PIPE_CONF_CHECK_INFOFRAME(drm);
>   	PIPE_CONF_CHECK_DP_VSC_SDP(vsc);
> +	PIPE_CONF_CHECK_DP_AS_SDP(as_sdp);
>   
>   	PIPE_CONF_CHECK_X(sync_mode_slaves_mask);
>   	PIPE_CONF_CHECK_I(master_transcoder);
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 1cd3cc0d0c0b..2ec1f923a5a0 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2648,6 +2648,8 @@ static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp,
>   	as_sdp->target_rr = 0;
>   	as_sdp->duration_incr_ms = 0;
>   	as_sdp->duration_incr_ms = 0;
> +
> +	crtc_state->infoframes.enable |= intel_hdmi_infoframe_enable(DP_SDP_ADAPTIVE_SYNC);


This change does not seem to belong to this patch.

Regards,

Ankit

>   }
>   
>   static void intel_dp_compute_vsc_sdp(struct intel_dp *intel_dp,