On Wed, Jul 15, 2015 at 06:39:34PM +0530, Kausal Malladi wrote:
> This patch adds set_property handler for Gamma color correction and
> enhancement capability at Pipe level on CHV/BSW platform. The set
> function just attaches the Gamma blob to CRTC state, that later gets
> committed using atomic path.
>
> Signed-off-by: Shashank Sharma <shashank.sha...@intel.com>
> Signed-off-by: Kausal Malladi <kausal.mall...@intel.com>
> ---
> drivers/gpu/drm/i915/intel_atomic.c | 7 +++++++
> drivers/gpu/drm/i915/intel_color_manager.c | 19 +++++++++++++++++++
> drivers/gpu/drm/i915/intel_drv.h | 3 +++
> 3 files changed, 29 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_atomic.c
> b/drivers/gpu/drm/i915/intel_atomic.c
> index d873bda..72d6b37 100644
> --- a/drivers/gpu/drm/i915/intel_atomic.c
> +++ b/drivers/gpu/drm/i915/intel_atomic.c
> @@ -473,6 +473,13 @@ int intel_crtc_atomic_set_property(struct drm_crtc *crtc,
> struct drm_property *property,
> uint64_t val)
> {
> + struct drm_device *dev = crtc->dev;
> + struct drm_mode_config *config = &dev->mode_config;
> +
> + if (property == config->prop_palette_after_ctm)
> + return intel_color_manager_set_pipe_gamma(dev, state,
> + &crtc->base, val);
> +
> DRM_DEBUG_KMS("Unknown crtc property '%s'\n", property->name);
> return -EINVAL;
> }
> diff --git a/drivers/gpu/drm/i915/intel_color_manager.c
> b/drivers/gpu/drm/i915/intel_color_manager.c
> index def20d0f..70c0d42 100644
> --- a/drivers/gpu/drm/i915/intel_color_manager.c
> +++ b/drivers/gpu/drm/i915/intel_color_manager.c
> @@ -27,6 +27,25 @@
>
> #include "intel_color_manager.h"
>
> +int intel_color_manager_set_pipe_gamma(struct drm_device *dev,
> + struct drm_crtc_state *crtc_state,
> + struct drm_mode_object *obj, uint32_t blob_id)
> +{
> + struct drm_property_blob *blob;
> +
> + blob = drm_property_lookup_blob(dev, blob_id);
> + if (!blob) {
> + DRM_ERROR("Invalid Blob ID\n");
> + return -EINVAL;
> + }
I'm not terribly familiar the semantics of the color correction
stuff...this prevents userspace from removing the gamma setting by
passing a 0; is that expected that gamma can't be disabled once set?
Same question for your degamma patch later in the series.
Matt
> +
> + if (crtc_state->palette_after_ctm_blob)
> +
> drm_property_unreference_blob(crtc_state->palette_after_ctm_blob);
> +
> + crtc_state->palette_after_ctm_blob = blob;
> + return 0;
> +}
> +
> int get_chv_pipe_gamma_capabilities(struct drm_device *dev,
> struct drm_palette_caps *palette_caps, struct drm_crtc *crtc)
> {
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index 1e61036..45c42f0 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1453,5 +1453,8 @@ extern const struct drm_plane_helper_funcs
> intel_plane_helper_funcs;
> /* intel_color_manager.c */
> void intel_attach_color_properties_to_crtc(struct drm_device *dev,
> struct drm_mode_object *mode_obj);
> +int intel_color_manager_set_pipe_gamma(struct drm_device *dev,
> + struct drm_crtc_state *crtc_state,
> + struct drm_mode_object *obj, uint32_t blob_id);
>
> #endif /* __INTEL_DRV_H__ */
> --
> 2.4.5
>
--
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
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