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Commit 8ee1fec3 authored by Young Hwan Kwak's avatar Young Hwan Kwak Committed by Young Kwak
Browse files

msm: kgsl: Show max gpu temperature 



Parse the thermal zone names from gpu DT to get each zone's temperature
and print the maximum temperature among them in sysfs.

CRs-Fixed: 2765368
Change-id: I37767d1bf9a8d4887dfcbad56ebdf17d27e4e465
Signed-off-by: default avatarYoung Hwan Kwak <ykwak@codeaurora.org>
parent 754822b0

drivers/gpu/msm/kgsl_pwrctrl.c

+18 −16
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2010-2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2010-2021, The Linux Foundation. All rights reserved.

 */



#include <linux/msm-bus.h>
@@ -1524,23 +1524,29 @@ static ssize_t temp_show(struct device *dev, 
					char *buf)

{

	struct kgsl_device *device = dev_get_drvdata(dev);

	struct kgsl_pwrctrl *pwr = &device->pwrctrl;

	struct device *_dev;

	struct thermal_zone_device *thermal_dev;

	int ret, temperature = 0;

	int temperature = INT_MIN, max_temp = INT_MIN;

	const char *name;

	struct property *prop;



	if (!pwr->tzone_name)

		return 0;

	_dev = &device->pdev->dev;



	thermal_dev = thermal_zone_get_zone_by_name((char *)pwr->tzone_name);

	if (thermal_dev == NULL)

		return 0;

	of_property_for_each_string(_dev->of_node,

		"qcom,tzone-names", prop, name) {

		thermal_dev = thermal_zone_get_zone_by_name(name);



	ret = thermal_zone_get_temp(thermal_dev, &temperature);

	if (ret)

		return 0;

		if (IS_ERR(thermal_dev))

			continue;



		if (thermal_zone_get_temp(thermal_dev, &temperature))

			continue;



		max_temp = max(temperature, max_temp);

	}



	return scnprintf(buf, PAGE_SIZE, "%d\n",

			temperature);

			max_temp);

}



static ssize_t pwrscale_store(struct device *dev,
@@ -2427,10 +2433,6 @@ int kgsl_pwrctrl_init(struct kgsl_device *device) 


	kgsl_pwrctrl_vbif_init(device);



	/* temperature sensor name */

	of_property_read_string(pdev->dev.of_node, "qcom,tzone-name",

		&pwr->tzone_name);



	return result;



error_cleanup_bus_ib:

drivers/gpu/msm/kgsl_pwrctrl.h

+1 −3
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2010-2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2010-2021, The Linux Foundation. All rights reserved.

 */

#ifndef __KGSL_PWRCTRL_H

#define __KGSL_PWRCTRL_H
@@ -180,7 +180,6 @@ struct gpu_cx_ipeak_client { 
 * @cx_ipeak_pwr_limit - pointer to the cx_ipeak limits node

 * isense_clk_indx - index of isense clock, 0 if no isense

 * isense_clk_on_level - isense clock rate is XO rate below this level.

 * tzone_name - pointer to thermal zone name of GPU temperature sensor

 * gpu_cx_ipeak_client - CX Ipeak clients used by GPU

 */
@@ -240,7 +239,6 @@ struct kgsl_pwrctrl { 
	struct kgsl_pwr_limit *cx_ipeak_pwr_limit;

	unsigned int gpu_bimc_int_clk_freq;

	bool gpu_bimc_interface_enabled;

	const char *tzone_name;

	struct gpu_cx_ipeak_client gpu_ipeak_client[2];

};