Currently if DSC support is requested, the driver only supports using
2 DSC blocks. We need 4 DSC in quad-pipe topology in future. So Only
configure DSC engines in use, instead of the maximum number of DSC
engines.

Signed-off-by: Jun Nie <jun....@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
Reviewed-by: Jessica Zhang <quic_jessz...@quicinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 6 +++---
 1 file changed, 3 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 
c734d2c5790d2a8f5f20c4b5aa1e316062d9b34d..5b98ae96bf5d46872a7af801d4157820d72af01f
 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2027,11 +2027,11 @@ static void dpu_encoder_dsc_pipe_cfg(struct dpu_hw_ctl 
*ctl,
 static void dpu_encoder_prep_dsc(struct dpu_encoder_virt *dpu_enc,
                                 struct drm_dsc_config *dsc)
 {
-       /* coding only for 2LM, 2enc, 1 dsc config */
        struct dpu_encoder_phys *enc_master = dpu_enc->cur_master;
        struct dpu_hw_ctl *ctl = enc_master->hw_ctl;
        struct dpu_hw_dsc *hw_dsc[MAX_CHANNELS_PER_ENC];
        struct dpu_hw_pingpong *hw_pp[MAX_CHANNELS_PER_ENC];
+       int num_dsc = dpu_enc->num_dscs;
        int this_frame_slices;
        int intf_ip_w, enc_ip_w;
        int dsc_common_mode;
@@ -2039,7 +2039,7 @@ static void dpu_encoder_prep_dsc(struct dpu_encoder_virt 
*dpu_enc,
        u32 initial_lines;
        int i;
 
-       for (i = 0; i < MAX_CHANNELS_PER_ENC; i++) {
+       for (i = 0; i < num_dsc; i++) {
                hw_pp[i] = dpu_enc->hw_pp[i];
                hw_dsc[i] = dpu_enc->hw_dsc[i];
 
@@ -2068,7 +2068,7 @@ static void dpu_encoder_prep_dsc(struct dpu_encoder_virt 
*dpu_enc,
        enc_ip_w = intf_ip_w / 2;
        initial_lines = dpu_encoder_dsc_initial_line_calc(dsc, enc_ip_w);
 
-       for (i = 0; i < MAX_CHANNELS_PER_ENC; i++)
+       for (i = 0; i < num_dsc; i++)
                dpu_encoder_dsc_pipe_cfg(ctl, hw_dsc[i], hw_pp[i],
                                         dsc, dsc_common_mode, initial_lines);
 }

-- 
2.34.1

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