In Bigjoiner check for DSC, bigjoiner interface bits for DP for
DISPLAY > 13 is 36 (Bspec: 49259).
v2: Corrected Display ver to 13.
v3: Follow convention for conditional statement. (Ville)
v4: Fix check for display ver. (Ville)
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
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 c4e0a2704860..8edac9462f5a 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -793,8 +793,9 @@ u16 intel_dp_dsc_get_max_compressed_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) >= 14 ? 36 : 24;
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);
--
2.40.1
