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Commit 5e83de56 authored by Puranam V G Tejaswi's avatar Puranam V G Tejaswi
Browse files

msm: kgsl: show max gpu temperature 



Parse the thermal zone names from gpu dtsi to get
each zone's temperature. Print the maximum temperature
in sysfs.

Change-Id: I4f5d90898a46e31af6c57105505a87d33cc89779
Signed-off-by: default avatarPuranam V G Tejaswi <pvgtejas@codeaurora.org>
parent 00166d4f

Documentation/devicetree/bindings/gpu/adreno.txt

+4 −0
Original line number Diff line number Diff line
@@ -218,6 +218,10 @@ Optional Properties: 
				Specify the name of GPU temperature sensor. This name will be used

				to get the temperature from the thermal driver API.



- tzone-names:

				Specify the names of GPU thermal zones. These will be used

				to get the temperature from the thermal driver API.



- qcom,enable-midframe-timer:

				Boolean. Enables the use of midframe sampling timer. This timer

				samples the GPU powerstats if the cmdbatch expiry takes longer than

drivers/gpu/msm/kgsl_pwrctrl.c

+12 −16
Original line number Diff line number Diff line
@@ -1493,28 +1493,24 @@ static ssize_t kgsl_pwrctrl_temp_show(struct device *dev, 
	struct kgsl_device *device = kgsl_device_from_dev(dev);

	struct kgsl_pwrctrl *pwr;

	struct thermal_zone_device *thermal_dev;

	int ret, temperature = 0;

	int i, max_temp = 0;



	if (device == NULL)

		goto done;

		return 0;



	pwr = &device->pwrctrl;



	if (!pwr->tzone_name)

		goto done;

	for (i = 0; i < KGSL_MAX_TZONE_NAMES; i++) {

		int temp = 0;



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

	if (thermal_dev == NULL)

		goto done;

		thermal_dev = thermal_zone_get_zone_by_name(

				pwr->tzone_names[i]);

		if (!(thermal_zone_get_temp(thermal_dev, &temp)))

			max_temp = max_t(int, temp, max_temp);



	ret = thermal_zone_get_temp(thermal_dev, &temperature);

	if (ret)

		goto done;

	}



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

			temperature);

done:

	return 0;

	return scnprintf(buf, PAGE_SIZE, "%d\n", max_temp);

}



static ssize_t kgsl_pwrctrl_pwrscale_store(struct device *dev,
@@ -2453,9 +2449,9 @@ int kgsl_pwrctrl_init(struct kgsl_device *device) 
	kgsl_pwrctrl_vbif_init();



	/* temperature sensor name */

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

		&pwr->tzone_name);



	of_property_read_string_array(pdev->dev.of_node, "tzone-names",

		pwr->tzone_names, KGSL_MAX_TZONE_NAMES);

	/*

	 * Cx ipeak client support, default value of Cx Ipeak GPU freq

	 * is used if defined in GPU list and it is overridden by

drivers/gpu/msm/kgsl_pwrctrl.h

+4 −2
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ 


#define KGSL_MAX_PWRLEVELS 10



#define KGSL_MAX_TZONE_NAMES 2



/* Only two supported levels, min & max */

#define KGSL_CONSTRAINT_PWR_MAXLEVELS 2
@@ -171,7 +173,7 @@ struct kgsl_regulator { 
 * @sysfs_pwr_limit - pointer to the sysfs 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

 * tzone_names - array of thermal zone names of GPU temperature sensors

 * gpu_cx_ipeak - pointer to CX Ipeak client used by GPU

 * cx_ipeak_gpu_freq - Value of GPU CX Ipeak frequency

 */
@@ -231,7 +233,7 @@ struct kgsl_pwrctrl { 
	struct kgsl_pwr_limit *sysfs_pwr_limit;

	unsigned int gpu_bimc_int_clk_freq;

	bool gpu_bimc_interface_enabled;

	const char *tzone_name;

	const char *tzone_names[KGSL_MAX_TZONE_NAMES];

	struct cx_ipeak_client *gpu_cx_ipeak;

	unsigned int cx_ipeak_gpu_freq;

};