From: Eunseok Choi <es10.choi@samsung.com>
Date: Wed, 30 Aug 2017 13:58:37 +0000 (+0900)
Subject: [COMMON] thermal: power_alloctor: reset err_integral to integral_max
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0a55cb37b91c44319fc88cfb667727cf40373f96;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[COMMON] thermal: power_alloctor: reset err_integral to integral_max

This patch set err_integral value to integral_max as a reset value.

Change-Id: I79ce81fd91bcbc565d484ead2adbf313d4430c45
Signed-off-by: Eunseok Choi <es10.choi@samsung.com>
---

diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c
index 8082bbf2b719..e8728b52d942 100644
--- a/drivers/thermal/power_allocator.c
+++ b/drivers/thermal/power_allocator.c
@@ -530,10 +530,13 @@ static void get_governor_trips(struct thermal_zone_device *tz,
 	}
 }
 
-static void reset_pid_controller(struct power_allocator_params *params)
+static void reset_pid_controller(struct power_allocator_params *params, struct thermal_zone_device *tz)
 {
-	params->err_integral = 0;
+	s64 i = int_to_frac(tz->tzp->integral_max);
+
+	params->err_integral = div_frac(i, tz->tzp->k_i);
 	params->prev_err = 0;
+
 }
 
 static void allow_maximum_power(struct thermal_zone_device *tz)
@@ -598,7 +601,7 @@ static int power_allocator_bind(struct thermal_zone_device *tz)
 					       control_temp, false);
 	}
 
-	reset_pid_controller(params);
+	reset_pid_controller(params, tz);
 
 	tz->governor_data = params;
 
@@ -642,7 +645,7 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
 				     &switch_on_temp);
 	if (!ret && (tz->temperature < switch_on_temp)) {
 		tz->passive = 0;
-		reset_pid_controller(params);
+		reset_pid_controller(params, tz);
 		allow_maximum_power(tz);
 		return 0;
 	}