msm: mdss: adjust ib bw vote as maximum per-pipe bw

Adjust ib vote to calculate it as the maximum
per-pipe bandwidth of the real time clients.

Change-Id: I1596b7dd8e1304985ac3ab49581d9083c64a2b9d
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>

drivers/video/fbdev/msm/mdss.h

@@ -147,6 +147,11 @@ enum mdss_hw_quirk {
 	MDSS_QUIRK_MAX,
 };
 
+enum mdss_qos_settings {
+	MDSS_QOS_PER_PIPE_IB,
+	MDSS_QOS_MAX,
+};
+
 struct mdss_smmu_client {
 	struct device *dev;
 	struct dma_iommu_mapping *mmu_mapping;
@@ -214,6 +219,8 @@ struct mdss_data_type {
 	DECLARE_BITMAP(mdss_quirk_map, MDSS_QUIRK_MAX);
 	/* bitmap to track total mmbs in use */
 	DECLARE_BITMAP(mmb_alloc_map, MAX_DRV_SUP_MMB_BLKS);
+	/* bitmap to track qos applicable settings */
+	DECLARE_BITMAP(mdss_qos_map, MDSS_QOS_MAX);
 
 	u32 has_bwc;
 	/* values used when HW has a common panic/robust LUT */
@@ -280,6 +287,7 @@ struct mdss_data_type {
 	struct mdss_fudge_factor ib_factor;
 	struct mdss_fudge_factor ib_factor_overlap;
 	struct mdss_fudge_factor clk_factor;
+	struct mdss_fudge_factor per_pipe_ib_factor;
 
 	u32 disable_prefill;
 	u32 *clock_levels;

drivers/video/fbdev/msm/mdss_mdp.c

@@ -1001,9 +1001,20 @@ static int mdss_mdp_debug_init(struct mdss_data_type *mdata)
 
 static void mdss_mdp_hw_rev_caps_init(struct mdss_data_type *mdata)
 {
+
+	mdata->per_pipe_ib_factor.numer = 0;
+	mdata->per_pipe_ib_factor.denom = 0;
+
 	switch (mdata->mdp_rev) {
-	case MDSS_MDP_HW_REV_105:
 	case MDSS_MDP_HW_REV_107:
+		mdss_set_quirk(mdata, MDSS_QUIRK_BWCPANIC);
+		mdata->max_target_zorder = 7; /* excluding base layer */
+		mdata->max_cursor_size = 128;
+		mdata->per_pipe_ib_factor.numer = 3;
+		mdata->per_pipe_ib_factor.denom = 2;
+		set_bit(MDSS_QOS_PER_PIPE_IB, mdata->mdss_qos_map);
+		break;
+	case MDSS_MDP_HW_REV_105:
 	case MDSS_MDP_HW_REV_109:
 		mdss_set_quirk(mdata, MDSS_QUIRK_BWCPANIC);
 		mdata->max_target_zorder = 7; /* excluding base layer */

drivers/video/fbdev/msm/mdss_mdp.h

@@ -199,6 +199,7 @@ struct mdss_mdp_perf_params {
 	u64 bw_overlap;
 	u64 bw_writeback;
 	u64 bw_prefill;
+	u64 max_per_pipe_ib;
 	u32 prefill_bytes;
 	u64 bw_ctl;
 	u32 mdp_clk_rate;

drivers/video/fbdev/msm/mdss_mdp_ctl.c

@@ -798,6 +798,10 @@ static void mdss_mdp_perf_calc_mixer(struct mdss_mdp_mixer *mixer,
 			flags))
 			continue;
 
+		if (!mdss_mdp_is_nrt_ctl_path(mixer->ctl))
+			perf->max_per_pipe_ib = max(perf->max_per_pipe_ib,
+			    tmp.bw_overlap);
+
 		bitmap_or(perf->bw_vote_mode, perf->bw_vote_mode,
 			tmp.bw_vote_mode, MDSS_MDP_BW_MODE_MAX);
 
@@ -936,6 +940,7 @@ static void __mdss_mdp_perf_calc_ctl_helper(struct mdss_mdp_ctl *ctl,
 		bitmap_or(perf->bw_vote_mode, perf->bw_vote_mode,
 			tmp.bw_vote_mode, MDSS_MDP_BW_MODE_MAX);
 
+		perf->max_per_pipe_ib = tmp.max_per_pipe_ib;
 		perf->bw_overlap += tmp.bw_overlap;
 		perf->prefill_bytes += tmp.prefill_bytes;
 		perf->mdp_clk_rate = tmp.mdp_clk_rate;
@@ -949,6 +954,8 @@ static void __mdss_mdp_perf_calc_ctl_helper(struct mdss_mdp_ctl *ctl,
 		bitmap_or(perf->bw_vote_mode, perf->bw_vote_mode,
 			tmp.bw_vote_mode, MDSS_MDP_BW_MODE_MAX);
 
+		perf->max_per_pipe_ib = max(perf->max_per_pipe_ib,
+			tmp.max_per_pipe_ib);
 		perf->bw_overlap += tmp.bw_overlap;
 		perf->prefill_bytes += tmp.prefill_bytes;
 		perf->bw_writeback += tmp.bw_writeback;
@@ -1267,6 +1274,9 @@ static u64 mdss_mdp_ctl_calc_client_vote(struct mdss_data_type *mdata,
 					ctl->cur_perf.bw_vote_mode,
 					MDSS_MDP_BW_MODE_MAX);
 
+			perf->max_per_pipe_ib = max(perf->max_per_pipe_ib,
+				ctl->cur_perf.max_per_pipe_ib);
+
 			if (nrt_client && ctl->intf_num == MDSS_MDP_NO_INTF) {
 				bw_sum_of_intfs += ctl->cur_perf.bw_writeback;
 				continue;
@@ -1288,8 +1298,16 @@ static void mdss_mdp_ctl_update_client_vote(struct mdss_data_type *mdata,
 {
 	u64 bus_ab_quota, bus_ib_quota;
 
-	bw_vote = max(bw_vote, mdata->perf_tune.min_bus_vote);
+	bus_ab_quota = max(bw_vote, mdata->perf_tune.min_bus_vote);
+
+	if (test_bit(MDSS_QOS_PER_PIPE_IB, mdata->mdss_qos_map)) {
+		if (!nrt_client)
+			bus_ib_quota = perf->max_per_pipe_ib;
+		else
+			bus_ib_quota = 0;
+	} else {
 		bus_ib_quota = bw_vote;
+	}
 
 	if (test_bit(MDSS_MDP_BW_MODE_SINGLE_LAYER,
 		perf->bw_vote_mode) &&
@@ -1301,7 +1319,12 @@ static void mdss_mdp_ctl_update_client_vote(struct mdss_data_type *mdata,
 			&ib_factor_vscaling);
 	}
 
-	bus_ab_quota = apply_fudge_factor(bw_vote, &mdss_res->ab_factor);
+	if (test_bit(MDSS_QOS_PER_PIPE_IB, mdata->mdss_qos_map) &&
+			!nrt_client)
+		apply_fudge_factor(bus_ib_quota,
+			&mdata->per_pipe_ib_factor);
+
+	bus_ab_quota = apply_fudge_factor(bus_ab_quota, &mdss_res->ab_factor);
 	ATRACE_INT("bus_quota", bus_ib_quota);
 
 	mdss_bus_scale_set_quota(nrt_client ? MDSS_MDP_NRT : MDSS_MDP_RT,
@@ -1314,7 +1337,7 @@ static void mdss_mdp_ctl_perf_update_bus(struct mdss_data_type *mdata,
 	struct mdss_mdp_ctl *ctl, u32 mdp_clk)
 {
 	u64 bw_sum_of_rt_intfs = 0, bw_sum_of_nrt_intfs = 0;
-	struct mdss_mdp_perf_params perf;
+	struct mdss_mdp_perf_params perf = {0};
 
 	ATRACE_BEGIN(__func__);
 
@@ -1503,6 +1526,7 @@ static void mdss_mdp_ctl_perf_update(struct mdss_mdp_ctl *ctl,
 				ctl->num, params_changed, new->bw_ctl,
 				old->bw_ctl);
 			old->bw_ctl = new->bw_ctl;
+			old->max_per_pipe_ib = new->max_per_pipe_ib;
 			bitmap_copy(old->bw_vote_mode, new->bw_vote_mode,
 				MDSS_MDP_BW_MODE_MAX);
 			update_bus = 1;