drm/msm/dpu: add CWB support to dpu_hw_wb

Adjust the WB_MUX configuration to account for using dedicated CWB
pingpong blocks.

Signed-off-by: Esha Bharadwaj <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Signed-off-by: Jessica Zhang <[email protected]>
Signed-off-by: Dmitry Baryshkov <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/629248/
Link: https://lore.kernel.org/r/[email protected]

Author: Esha Bharadwaj

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c

@@ -173,7 +173,9 @@ static void dpu_hw_wb_bind_pingpong_blk(
 	mux_cfg = DPU_REG_READ(c, WB_MUX);
 	mux_cfg &= ~0xf;
 
-	if (pp)
+	if (pp >= PINGPONG_CWB_0)
+		mux_cfg |= (pp < PINGPONG_CWB_2) ? 0xd : 0xb;
+	else if (pp)
 		mux_cfg |= (pp - PINGPONG_0) & 0x7;
 	else
 		mux_cfg |= 0xf;