diff options
| author | Manasi Navare <manasi.d.navare@intel.com> | 2018-10-31 01:19:21 +0100 |
|---|---|---|
| committer | Manasi Navare <manasi.d.navare@intel.com> | 2018-10-31 22:09:44 +0100 |
| commit | d9218c8f6cf43bc0db5422e6b05b9e487c400a23 (patch) | |
| tree | 7d3cc681eec9967e911de82593d1a3a6b8967c1b /drivers/gpu/drm/i915/intel_drv.h | |
| parent | drm/dp: DRM DP helper/macros to get DP sink DSC parameters (diff) | |
| download | linux-d9218c8f6cf43bc0db5422e6b05b9e487c400a23.tar.xz linux-d9218c8f6cf43bc0db5422e6b05b9e487c400a23.zip | |
drm/i915/dp: Add helpers for Compressed BPP and Slice Count for DSC
This patch adds helpers for calculating the maximum compressed BPP
supported with small joiner.
This also adds a helper for calculating the slice count in case
of small joiner.
These are inside intel_dp since they take into account hardware
limitations.
v6:
* Take mode_clock and mode_hdisplay as input arguments
so that this can be called in intel_dp_mode_valid (Manasi)
v5:
* Get the max slice width from DPCD
* Check against Min_Slice_width of 2560 (Anusha)
v4:
* #defines for PPR in slice count helper (Gaurav)
v3:
* Simply logic for bpp (DK)
* Limit the valid slice count by max supported by Sink (Manasi)
v2:
* Change the small joiner RAM buffer constant as bspec changed (Manasi)
* rename it as SMALL_JOINER since we are not enabling
big joiner yet (Anusha)
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>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Gaurav K Singh <gaurav.k.singh@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181031001923.31442-5-manasi.d.navare@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index e827c164c834..7cce7dc49bbc 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1836,6 +1836,10 @@ bool intel_dp_source_supports_hbr2(struct intel_dp *intel_dp); bool intel_dp_source_supports_hbr3(struct intel_dp *intel_dp); bool intel_dp_get_link_status(struct intel_dp *intel_dp, uint8_t link_status[DP_LINK_STATUS_SIZE]); +uint16_t intel_dp_dsc_get_output_bpp(int link_clock, uint8_t lane_count, + int mode_clock, int mode_hdisplay); +uint8_t intel_dp_dsc_get_slice_count(struct intel_dp *intel_dp, int mode_clock, + int mode_hdisplay); static inline unsigned int intel_dp_unused_lane_mask(int lane_count) { |