drm/i915/bw: Remove deinterleave fallback for TGL+

Remove the deinterleave fallback calculation from the TGL+ codepath.
The fallback is using the ICL deinterleave calculation which was never
in the TGL+ algorithm. All supported memory types have the correct
deinterleave already specified for TGL+ anyway, so this is dead code.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260522200346.17377-10-ville.syrjala@linux.intel.com
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index b1a2f08680d6109bc1fe8e327485793427906ac7..d0fb4ce9140119b2fdb6b873e8b890708094db8d 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -608,8 +608,6 @@ static int tgl_get_bw_info(struct intel_display *display,
            (dram_info->type == INTEL_DRAM_LPDDR4 || dram_info->type == INTEL_DRAM_LPDDR5))
                num_channels *= 2;
 
-       qi.deinterleave = qi.deinterleave ? : DIV_ROUND_UP(num_channels, is_y_tile ? 4 : 2);
-
        if (num_channels < qi.max_numchannels && DISPLAY_VER(display) >= 12)
                qi.deinterleave = max(qi.deinterleave / 2, 1);