disp: msm: sde: add uidle fill level scaling

Kalama adds support for uidle fill level scaling to allow
fal10 mode for 90 and above fps use cases.

Pre-Kalama, the fill levels are clamped at 4-bit values supported
by the threshold registers. But to achieve the targeted 50us idle
time on fal10 modes with higher FPS use cases, we need fill levels
higher than 15 (max for 4 bit). The hardware change in Kalama
achieves by using a 5 bit scale factor in combination with the
programmed threshold values.

Change-Id: I638705355c03910a83e7d922b6fe48ab11c120a8
Signed-off-by: Jeykumar Sankaran <quic_jeykumar@quicinc.com>

msm/sde/sde_hw_sspp.c

@@ -46,6 +46,7 @@
 
 #define SSPP_UIDLE_CTRL_VALUE              0x1f0
 #define SSPP_UIDLE_CTRL_VALUE_REC1         0x1f4
+#define SSPP_FILL_LEVEL_SCALE              0x1f8
 
 /* SSPP_DGM */
 #define SSPP_DGM_0                         0x9F0
@@ -1167,6 +1168,22 @@ static void sde_hw_sspp_setup_sys_cache(struct sde_hw_pipe *ctx,
 	SDE_REG_WRITE(&ctx->hw, SSPP_SYS_CACHE_MODE + idx, val);
 }
 
+static void sde_hw_sspp_setup_uidle_fill_scale(struct sde_hw_pipe *ctx,
+		struct sde_hw_pipe_uidle_cfg *cfg)
+{
+	u32 idx, fill_lvl;
+
+	if (_sspp_subblk_offset(ctx, SDE_SSPP_SRC, &idx))
+		return;
+
+	/* duplicate the v1 scale values for V2 and fal10 exit */
+	fill_lvl = cfg->fill_level_scale & 0xF;
+	fill_lvl |= (cfg->fill_level_scale & 0xF) << 8;
+	fill_lvl |= (cfg->fill_level_scale & 0xF) << 16;
+
+	SDE_REG_WRITE(&ctx->hw, SSPP_FILL_LEVEL_SCALE + idx, fill_lvl);
+}
+
 static void sde_hw_sspp_setup_uidle(struct sde_hw_pipe *ctx,
 		struct sde_hw_pipe_uidle_cfg *cfg,
 		enum sde_sspp_multirect_index index)
@@ -1501,8 +1518,11 @@ static void _setup_layer_ops(struct sde_hw_pipe *c,
 	if (test_bit(SDE_PERF_SSPP_CDP, &perf_features))
 		c->ops.setup_cdp = sde_hw_sspp_setup_cdp;
 
-	if (test_bit(SDE_PERF_SSPP_UIDLE, &perf_features))
+	if (test_bit(SDE_PERF_SSPP_UIDLE, &perf_features)) {
 		c->ops.setup_uidle = sde_hw_sspp_setup_uidle;
+		if (test_bit(SDE_PERF_SSPP_UIDLE_FILL_LVL_SCALE, &perf_features))
+			c->ops.setup_uidle_fill_scale = sde_hw_sspp_setup_uidle_fill_scale;
+	}
 
 	_setup_layer_ops_colorproc(c, features, is_virtual_pipe);