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Commit f98bf218 authored by Divya Ponnusamy's avatar Divya Ponnusamy
Browse files

msm: kgsl: Add disable-busy-time-burst to disable ceiling threshold 



Add a devicetree property disable-busy-time-burst to
disable ceiling threshold in the governor. The ceiling threshold
cause busy time burst that switch power level for
large frames based on busy time.

Change-Id: I44f8a51e0aa49bb0b2210703f57874fd5f219c18
Signed-off-by: default avatarDivya Ponnusamy <pdivya@codeaurora.org>
parent 1c10389d

Documentation/devicetree/bindings/gpu/adreno.txt

+3 −0
Original line number Diff line number Diff line
@@ -91,6 +91,9 @@ Optional Properties: 
			   This is used to override faulty hardware readings.

- qcom,strtstp-sleepwake:  Boolean. Enables use of GPU SLUMBER instead of SLEEP for power savings

- qcom,gx-retention:  	   Boolean. Enables use of GX rail RETENTION voltage

- qcom,disable-busy-time-burst:

				Boolean. Disables the busy time burst to avoid switching

				of power level for large frames based on the busy time limit.



- qcom,pm-qos-active-latency:

				Right after GPU wakes up from sleep, driver votes for

drivers/devfreq/governor_msm_adreno_tz.c

+2 −1
Original line number Diff line number Diff line
@@ -311,7 +311,8 @@ static int tz_get_target_freq(struct devfreq *devfreq, unsigned long *freq, 
	 * If there is an extended block of busy processing,

	 * increase frequency.  Otherwise run the normal algorithm.

	 */

	if (priv->bin.busy_time > CEILING) {

	if (!priv->disable_busy_time_burst &&

			priv->bin.busy_time > CEILING) {

		val = -1 * level;

	} else {

drivers/gpu/msm/kgsl_pwrscale.c

+5 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved.

/* Copyright (c) 2010-2016, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -786,6 +786,10 @@ int kgsl_pwrscale_init(struct device *dev, const char *governor) 


	/* initialize msm-adreno-tz governor specific data here */

	data = gpu_profile->private_data;



	data->disable_busy_time_burst = of_property_read_bool(

		device->pdev->dev.of_node, "qcom,disable-busy-time-burst");



	/*

	 * If there is a separate GX power rail, allow

	 * independent modification to its voltage through

include/linux/msm_adreno_devfreq.h

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ struct devfreq_msm_adreno_tz_data { 
	} bus;

	unsigned int device_id;

	bool is_64;

	bool disable_busy_time_burst;

};



struct msm_adreno_extended_profile {