[PATCH v2 07/14] drm/msm/dpu: bind correct pingpong for quad pipe

[Jun Nie]

There are 2 interfaces and 4 pingpong in quad pipe. Map the 2nd
interface to 3rd PP instead of the 2nd PP.

Signed-off-by: Jun Nie <jun....@linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index bd2509985c4d0..dfe282c607933 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -1100,7 +1100,7 @@ static void dpu_encoder_virt_atomic_mode_set(struct 
drm_encoder *drm_enc,
        struct dpu_hw_blk *hw_lm[MAX_CHANNELS_PER_ENC];
        struct dpu_hw_blk *hw_dspp[MAX_CHANNELS_PER_ENC] = { NULL };
        struct dpu_hw_blk *hw_dsc[MAX_CHANNELS_PER_ENC];
-       int num_lm, num_ctl, num_pp, num_dsc;
+       int num_lm, num_ctl, num_pp, num_dsc, num_pp_per_intf;
        unsigned int dsc_mask = 0;
        int i;
 
@@ -1171,9 +1171,14 @@ static void dpu_encoder_virt_atomic_mode_set(struct 
drm_encoder *drm_enc,
 
        cstate->num_dscs = num_dsc;
        cstate->num_mixers = num_lm;
-
        dpu_enc->connector = conn_state->connector;
 
+       /*
+        * There may be 4 PP and 2 INTF for quad pipe case, so INTF is not
+        * mapped to PP 1:1. Let's calculate the stride with pipe/INTF
+        */
+       num_pp_per_intf = num_lm / dpu_enc->num_phys_encs;
+
        for (i = 0; i < dpu_enc->num_phys_encs; i++) {
                struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i];
                struct dpu_hw_ctl *ctl0 = to_dpu_hw_ctl(hw_ctl[0]);
@@ -1195,7 +1200,7 @@ static void dpu_encoder_virt_atomic_mode_set(struct 
drm_encoder *drm_enc,
                        return;
                }
 
-               phys->hw_pp = dpu_enc->hw_pp[i];
+               phys->hw_pp = dpu_enc->hw_pp[num_pp_per_intf * i];
 
                phys->cached_mode = crtc_state->adjusted_mode;
                if (phys->ops.atomic_mode_set)

-- 
2.34.1