adreno_tz: Adjust GPU target frequency calculation

* based from [1], here we finetune the logic by adding a min_busy condition so that we will only upscale when FLOOR is exceeded (for power consumption).
* ratio: by increasing initial load + the quotient of the 120(max refresh)/60 ratio, so that this will definitely act as boost (which is needed for HFR/heavy load situations).
* 90hz ratio is used for conditions below FLOOR value

[1]: KasaOS/KASA_Surya@24c1487

Change-Id: I98be2f909b63e5fb3426a74ddb5f0412ecbc5a00
Signed-off-by: dlwlrma123 <alexfinhart@gmail.com>
Signed-off-by: Richard Raya <rdxzv.dev@gmail.com>
Signed-off-by: Yahya Wessam <yahyawessam2002@gmail.com>

Author: minaripenguin

drivers/devfreq/governor_msm_adreno_tz.c

@@ -21,7 +21,6 @@
 #include <linux/mm.h>
 #include <linux/msm_adreno_devfreq.h>
 #include <asm/cacheflush.h>
-#include <drm/drm_refresh_rate.h>
 #include <soc/qcom/scm.h>
 #include "governor.h"
 
@@ -32,18 +31,13 @@ static DEFINE_SPINLOCK(suspend_lock);
  * FLOOR is 5msec to capture up to 3 re-draws
  * per frame for 60fps content.
  */
-#define FLOOR		        5000
+#define FLOOR		        3350
 /*
  * MIN_BUSY is 1 msec for the sample to be sent
  */
 #define MIN_BUSY		1000
 #define MAX_TZ_VERSION		0
 
-/*
- * CEILING is 50msec, larger than any standard
- * frame length, but less than the idle timer.
- */
-#define CEILING			50000
 #define TZ_RESET_ID		0x3
 #define TZ_UPDATE_ID		0x4
 #define TZ_INIT_ID		0x6
@@ -372,7 +366,12 @@ static int tz_get_target_freq(struct devfreq *devfreq, unsigned long *freq)
 #endif
 
 	priv->bin.total_time += stats.total_time;
-	priv->bin.busy_time += stats.busy_time;
+
+	if ((unsigned int)(priv->bin.busy_time + stats.busy_time) >= FLOOR) {
+		priv->bin.busy_time += stats.busy_time * 4;
+	} else {
+		priv->bin.busy_time += stats.busy_time * 4 / 2;
+	}
 
 	if (stats.private_data)
 		context_count =  *((int *)stats.private_data);
@@ -397,26 +396,12 @@ static int tz_get_target_freq(struct devfreq *devfreq, unsigned long *freq)
 		return level;
 	}
 
-	/*
-	 * If there is an extended block of busy processing,
-	 * increase frequency.  Otherwise run the normal algorithm.
-	 */
-	if (!priv->disable_busy_time_burst &&
-			priv->bin.busy_time > CEILING) {
-		val = -1 * level;
-	} else {
-		unsigned int refresh_rate = dsi_panel_get_refresh_rate();
-
-		scm_data[0] = level;
-		scm_data[1] = priv->bin.total_time;
-		if (refresh_rate > 60)
-			scm_data[2] = priv->bin.busy_time * refresh_rate / 60;
-		else
-			scm_data[2] = priv->bin.busy_time;
-		scm_data[3] = context_count;
-		__secure_tz_update_entry3(scm_data, sizeof(scm_data),
-					&val, sizeof(val), priv);
-	}
+	scm_data[0] = level;
+	scm_data[1] = priv->bin.total_time;
+	scm_data[2] = priv->bin.busy_time;
+	scm_data[3] = context_count;
+	__secure_tz_update_entry3(scm_data, sizeof(scm_data),
+				&val, sizeof(val), priv);
 	priv->bin.total_time = 0;
 	priv->bin.busy_time = 0;