[PATCHv3 07/10] drm/i915/display: Handle drm-crtc histogram property updates

[Kandpal, Suraj]

> -----Original Message-----
> From: dri-devel <dri-devel-bounces at lists.freedesktop.org> On Behalf Of
> Arun R Murthy
> Sent: Monday, December 9, 2024 9:55 PM
> To: intel-xe at lists.freedesktop.org; intel-gfx at lists.freedesktop.org; dri-
> devel at lists.freedesktop.org
> Cc: Murthy, Arun R <arun.r.murthy at intel.com>
> Subject: [PATCHv3 07/10] drm/i915/display: Handle drm-crtc histogram
> property updates
> 
> Check for any updates on drm_crtc property histogram_enable and
> histogram_iet_updated and call/act accordingly to update histogram or
> update the image enhancement LUT data API defined in i915 histogram.
> 

LGTM,
Reviewed-by: Suraj Kandpal <suraj.kandpal at intel.com>

> Signed-off-by: Arun R Murthy <arun.r.murthy at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_atomic.c     |  1 +
>  drivers/gpu/drm/i915/display/intel_crtc.c       |  7 +++++++
>  drivers/gpu/drm/i915/display/intel_display.c    | 17 +++++++++++++++++
>  .../gpu/drm/i915/display/intel_display_types.h  |  2 ++
>  4 files changed, 27 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c
> b/drivers/gpu/drm/i915/display/intel_atomic.c
> index 03dc54c802d3..dff130b3565a 100644
> --- a/drivers/gpu/drm/i915/display/intel_atomic.c
> +++ b/drivers/gpu/drm/i915/display/intel_atomic.c
> @@ -278,6 +278,7 @@ intel_crtc_duplicate_state(struct drm_crtc *crtc)
>  	crtc_state->dsb_color_vblank = NULL;
>  	crtc_state->dsb_commit = NULL;
>  	crtc_state->use_dsb = false;
> +	crtc_state->histogram_updated = false;
> 
>  	return &crtc_state->uapi;
>  }
> diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c
> b/drivers/gpu/drm/i915/display/intel_crtc.c
> index a2c528d707f4..0c8741ca9a71 100644
> --- a/drivers/gpu/drm/i915/display/intel_crtc.c
> +++ b/drivers/gpu/drm/i915/display/intel_crtc.c
> @@ -27,6 +27,7 @@
>  #include "intel_drrs.h"
>  #include "intel_dsi.h"
>  #include "intel_fifo_underrun.h"
> +#include "intel_histogram.h"
>  #include "intel_pipe_crc.h"
>  #include "intel_psr.h"
>  #include "intel_sprite.h"
> @@ -210,6 +211,7 @@ static struct intel_crtc *intel_crtc_alloc(void)  static
> void intel_crtc_free(struct intel_crtc *crtc)  {
>  	intel_crtc_destroy_state(&crtc->base, crtc->base.state);
> +	intel_histogram_finish(crtc);
>  	kfree(crtc);
>  }
> 
> @@ -380,10 +382,15 @@ int intel_crtc_init(struct drm_i915_private
> *dev_priv, enum pipe pipe)
> 
> 	BIT(DRM_SCALING_FILTER_DEFAULT) |
> 
> 	BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR));
> 
> +	if (drm_crtc_create_histogram_property(&crtc->base))
> +		drm_err(&dev_priv->drm, "Failed to initialize histogram
> +properties\n");
> +
>  	intel_color_crtc_init(crtc);
>  	intel_drrs_crtc_init(crtc);
>  	intel_crtc_crc_init(crtc);
> 
> +	intel_histogram_init(crtc);
> +
>  	cpu_latency_qos_add_request(&crtc->vblank_pm_qos,
> PM_QOS_DEFAULT_VALUE);
> 
>  	drm_WARN_ON(&dev_priv->drm, drm_crtc_index(&crtc->base) !=
> crtc->pipe); diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 35c8904ecf44..fb393e5a4c84 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -93,6 +93,7 @@
>  #include "intel_fifo_underrun.h"
>  #include "intel_frontbuffer.h"
>  #include "intel_hdmi.h"
> +#include "intel_histogram.h"
>  #include "intel_hotplug.h"
>  #include "intel_link_bw.h"
>  #include "intel_lvds.h"
> @@ -4612,6 +4613,12 @@ static int intel_crtc_atomic_check(struct
> intel_atomic_state *state,
>  	if (ret)
>  		return ret;
> 
> +	if (crtc_state->histogram_updated) {
> +		ret = intel_histogram_atomic_check(crtc);
> +		if (ret)
> +			return ret;
> +	}
> +
>  	return 0;
>  }
> 
> @@ -6832,6 +6839,10 @@ int intel_atomic_check(struct drm_device *dev,
>  		if (new_crtc_state->uapi.scaling_filter !=
>  		    old_crtc_state->uapi.scaling_filter)
>  			new_crtc_state->uapi.mode_changed = true;
> +
> +		if (new_crtc_state->uapi.histogram_enable |=
> +		    old_crtc_state->uapi.histogram_enable)
> +			new_crtc_state->histogram_updated = true;
>  	}
> 
>  	intel_vrr_check_modeset(state);
> @@ -7900,6 +7911,12 @@ static void intel_atomic_commit_tail(struct
> intel_atomic_state *state)
>  		 */
>  		old_crtc_state->dsb_color_vblank =
> fetch_and_zero(&new_crtc_state->dsb_color_vblank);
>  		old_crtc_state->dsb_commit =
> fetch_and_zero(&new_crtc_state->dsb_commit);
> +
> +		if (new_crtc_state->histogram_updated)
> +			intel_histogram_update(crtc, crtc->base.state-
> >histogram_enable);
> +		if (new_crtc_state->uapi.histogram_iet_updated)
> +			intel_histogram_set_iet_lut(crtc,
> +						    new_crtc_state-
> >uapi.histogram_iet);
>  	}
> 
>  	/* Underruns don't always raise interrupts, so check manually */ diff -
> -git a/drivers/gpu/drm/i915/display/intel_display_types.h
> b/drivers/gpu/drm/i915/display/intel_display_types.h
> index 0f50081b9957..15f4bd3ccc62 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -1317,6 +1317,8 @@ struct intel_crtc_state {
> 
>  	/* LOBF flag */
>  	bool has_lobf;
> +
> +	bool histogram_updated;
>  };
> 
>  enum intel_pipe_crc_source {
> --
> 2.25.1