Re: [PATCH 08/18] drm/i915: Add pipe gamma correction handlers

Daniel Vetter
2015-08-25T07:18:51Z

On Sat, Aug 22, 2015 at 11:41:45AM +0530, Sharma, Shashank wrote:
> Regards
> Shashank
>
> On 8/22/2015 4:10 AM, Matt Roper wrote:
> >On Thu, Aug 06, 2015 at 10:08:17PM +0530, Shashank Sharma wrote:
> >>From: Kausal Malladi <kausalmalladi@gmail.com>
> >>
> >>I915 driver registers gamma correction as palette correction
> >>property with DRM layer. This patch adds set_property() and get_property()
> >>handlers for pipe level gamma correction.
> >>
> >>The set function attaches the Gamma correction blob to CRTC state, these
> >>values will be committed during atomic commit.
> >>
> >>Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
> >>Signed-off-by: Kausal Malladi <kausalmalladi@gmail.com>
> >>---
> >> drivers/gpu/drm/i915/intel_atomic.c | 14 ++++++++++++++
> >> drivers/gpu/drm/i915/intel_color_manager.c | 20 ++++++++++++++++++++
> >> drivers/gpu/drm/i915/intel_drv.h | 3 +++
> >> 3 files changed, 37 insertions(+)
> >>
> >>diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
> >>index 8d04ee8..9f55e6c 100644
> >>--- a/drivers/gpu/drm/i915/intel_atomic.c
> >>+++ b/drivers/gpu/drm/i915/intel_atomic.c
> >>@@ -324,6 +324,13 @@ 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->cm_palette_after_ctm_property)
> >>+ return intel_color_manager_set_pipe_gamma(dev, state,
> >>+ &crtc->base, val);
> >>+
> >> DRM_DEBUG_KMS("Unknown crtc property '%s'\n", property->name);
> >> return -EINVAL;
> >> }
> >>@@ -333,5 +340,12 @@ int intel_crtc_atomic_get_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->cm_palette_after_ctm_property)
> >>+ *val = (state->palette_after_ctm_blob) ?
> >>+ state->palette_after_ctm_blob->base.id : 0;
> >>+
> >> return 0;
> >> }
> >>diff --git a/drivers/gpu/drm/i915/intel_color_manager.c b/drivers/gpu/drm/i915/intel_color_manager.c
> >>index 1c9c477..9a6126c 100644
> >>--- a/drivers/gpu/drm/i915/intel_color_manager.c
> >>+++ b/drivers/gpu/drm/i915/intel_color_manager.c
> >>@@ -27,6 +27,26 @@
> >>
> >> #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");
> >
> >A user can trigger this error on demand, so I think we want to keep this
> >as DRM_DEBUG_KMS (same on patches #10 and 13).
> >
> Agree.

Again needs a testcase in igt ...
-Daniel

> >
> >Matt
> >
> >>+ return -EINVAL;
> >>+ }
> >>+
> >>+ if (crtc_state->palette_after_ctm_blob)
> >>+ drm_property_unreference_blob(crtc_state->palette_after_ctm_blob);
> >>+
> >>+ /* Attach the blob to be commited in state */
> >>+ 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 dee5f91..820ded7 100644
> >>--- a/drivers/gpu/drm/i915/intel_drv.h
> >>+++ b/drivers/gpu/drm/i915/intel_drv.h
> >>@@ -1441,5 +1441,8 @@ 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__ */
> >>--
> >>1.9.1
> >>
> >
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--
Daniel Vetter
Software Engineer, Intel Corporation