drm/i915/dp: Add DSC params and DSC config to intel_crtc_state

Basic DSC parameters and DSC configuration data needs to be computed
for each of the requested mode during atomic check. This is
required since for certain modes, valid DSC parameters and config
data might not be computed in which case compression cannot be
enabled for that mode.
For that reason we need to add these params and config structure
to the intel_crtc_state so that if valid this state information
can directly be used while enabling DSC in atomic commit.

v2:
* Rebase on drm-tip (Manasi)

Cc: Gaurav K Singh <gaurav.k.singh@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181128202628.20238-1-manasi.d.navare@intel.com

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 645c2bbdcdfae23f0252e6cf5786d857628c90bf..42704e7313640f985a16b6f1c5c7c762c7bf5b35 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -53,6 +53,7 @@
 #include <drm/drm_auth.h>
 #include <drm/drm_cache.h>
 #include <drm/drm_util.h>
+#include <drm/drm_dsc.h>
 
 #include "i915_fixed.h"
 #include "i915_params.h"

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 40edb21087a79fb714e8cde5b5d3c6bf87999e00..5577f0f31b9943a30c04a393569223093801aa02 100644 (file)
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -942,6 +942,15 @@ struct intel_crtc_state {
 
        /* Output down scaling is done in LSPCON device */
        bool lspcon_downsampling;
+
+       /* Display Stream compression state */
+       struct {
+               bool compression_enable;
+               bool dsc_split;
+               u16 compressed_bpp;
+               u8 slice_count;
+       } dsc_params;
+       struct drm_dsc_config dp_dsc_cfg;
 };
 
 struct intel_crtc {