[Intel-gfx] [PATCH 1/2] drm/i915/dp: Update Bigjoiner interface bits for computing compressed bpp

[Ankit Nautiyal]

In Bigjoiner check for DSC, bigjoiner interface bits for DP for
DISPLAY > 12 is 36 (Bspec: 49259).

Signed-off-by: Ankit Nautiyal <ankit.k.nauti...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
b/drivers/gpu/drm/i915/display/intel_dp.c
index da1c00ee92fb..3fe651a8f5d0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -756,8 +756,9 @@ u16 intel_dp_dsc_get_output_bpp(struct drm_i915_private 
*i915,
        bits_per_pixel = min(bits_per_pixel, max_bpp_small_joiner_ram);
 
        if (bigjoiner) {
+               int bigjoiner_interface_bits = DISPLAY_VER(i915) <= 12 ? 24 : 
36;
                u32 max_bpp_bigjoiner =
-                       i915->display.cdclk.max_cdclk_freq * 48 /
+                       i915->display.cdclk.max_cdclk_freq * 2 * 
bigjoiner_interface_bits /
                        intel_dp_mode_to_fec_clock(mode_clock);
 
                bits_per_pixel = min(bits_per_pixel, max_bpp_bigjoiner);
-- 
2.25.1