[PATCH 3/8] drm/msm/dpu: drop dpu_core_perf_params::max_per_pipe_ib

[Dmitry Baryshkov]

The max_per_pipe_ib is a constant across all CRTCs and is read from the
catalog. Drop corresponding calculations and read the value directly at
icc_set_bw() time.

Suggested-by: Konrad Dybcio <konrad.dybcio at linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 17 +++++------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h |  2 --
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c      |  2 --
 3 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
index 9902febc72c0..ba146af73bc5 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c
@@ -105,13 +105,12 @@ static void _dpu_core_perf_calc_crtc(struct dpu_kms *kms,
 	memset(perf, 0, sizeof(struct dpu_core_perf_params));
 
 	perf->bw_ctl = _dpu_core_perf_calc_bw(kms, crtc);
-	perf->max_per_pipe_ib = kms->catalog->perf->min_dram_ib;
 	perf->core_clk_rate = _dpu_core_perf_calc_clk(kms, crtc, state);
 
 	DRM_DEBUG_ATOMIC(
-		"crtc=%d clk_rate=%llu core_ib=%llu core_ab=%llu\n",
+		"crtc=%d clk_rate=%llu core_ab=%llu\n",
 			crtc->base.id, perf->core_clk_rate,
-			perf->max_per_pipe_ib, perf->bw_ctl);
+			perf->bw_ctl);
 }
 
 int dpu_core_perf_crtc_check(struct drm_crtc *crtc,
@@ -199,9 +198,6 @@ static int _dpu_core_perf_crtc_update_bus(struct dpu_kms *kms,
 				dpu_crtc_get_client_type(tmp_crtc)) {
 			dpu_cstate = to_dpu_crtc_state(tmp_crtc->state);
 
-			perf.max_per_pipe_ib = max(perf.max_per_pipe_ib,
-					dpu_cstate->new_perf.max_per_pipe_ib);
-
 			perf.bw_ctl += dpu_cstate->new_perf.bw_ctl;
 
 			DRM_DEBUG_ATOMIC("crtc=%d bw=%llu paths:%d\n",
@@ -217,7 +213,7 @@ static int _dpu_core_perf_crtc_update_bus(struct dpu_kms *kms,
 	do_div(avg_bw, (kms->num_paths * 1000)); /*Bps_to_icc*/
 
 	for (i = 0; i < kms->num_paths; i++)
-		icc_set_bw(kms->path[i], avg_bw, perf.max_per_pipe_ib);
+		icc_set_bw(kms->path[i], avg_bw, kms->catalog->perf->min_dram_ib);
 
 	return ret;
 }
@@ -320,15 +316,12 @@ int dpu_core_perf_crtc_update(struct drm_crtc *crtc,
 		 * 2. new bandwidth vote - "ab or ib vote" is lower
 		 *    than current vote at end of commit or stop.
 		 */
-		if ((params_changed && ((new->bw_ctl > old->bw_ctl) ||
-			(new->max_per_pipe_ib > old->max_per_pipe_ib)))	||
-			(!params_changed && ((new->bw_ctl < old->bw_ctl) ||
-			(new->max_per_pipe_ib < old->max_per_pipe_ib)))) {
+		if ((params_changed && new->bw_ctl > old->bw_ctl) ||
+		    (!params_changed && new->bw_ctl < old->bw_ctl)) {
 			DRM_DEBUG_ATOMIC("crtc=%d p=%d new_bw=%llu,old_bw=%llu\n",
 				crtc->base.id, params_changed,
 				new->bw_ctl, old->bw_ctl);
 			old->bw_ctl = new->bw_ctl;
-			old->max_per_pipe_ib = new->max_per_pipe_ib;
 			update_bus = true;
 		}
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h
index e02cc2324af2..2bf7836f79bb 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.h
@@ -16,12 +16,10 @@
 
 /**
  * struct dpu_core_perf_params - definition of performance parameters
- * @max_per_pipe_ib: maximum instantaneous bandwidth request
  * @bw_ctl: arbitrated bandwidth request
  * @core_clk_rate: core clock rate request
  */
 struct dpu_core_perf_params {
-	u64 max_per_pipe_ib;
 	u64 bw_ctl;
 	u64 core_clk_rate;
 };
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 1edf2b6b0a26..ff5d306b95ed 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1400,8 +1400,6 @@ static int dpu_crtc_debugfs_state_show(struct seq_file *s, void *v)
 	seq_printf(s, "core_clk_rate: %llu\n",
 			dpu_crtc->cur_perf.core_clk_rate);
 	seq_printf(s, "bw_ctl: %llu\n", dpu_crtc->cur_perf.bw_ctl);
-	seq_printf(s, "max_per_pipe_ib: %llu\n",
-				dpu_crtc->cur_perf.max_per_pipe_ib);
 
 	return 0;
 }
-- 
2.39.2