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Commit ad222973 authored by Ram Chandrasekar's avatar Ram Chandrasekar
Browse files

drivers: thermal: qmi_sensor: Add snapshot of qmi sensor driver 



This is a snapshot of the qmi sensor driver from msm-4.19 to msm-5.4
as of 'commit <076ba8f024a882373ff8ed27780362c3733b21dc> (drivers:
thermal: qmi_sensor: Add support for new sensors)'.

Change-Id: Ib1e6359aba7a794cf64f07e888cef36b6c04f87c
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent c18ea300

drivers/thermal/qcom/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -21,6 +21,16 @@ config QCOM_SPMI_TEMP_ALARM 
	  real time die temperature if an ADC is present or an estimate of the

	  temperature based upon the over temperature stage value.



config QTI_QMI_SENSOR

	tristate "QTI QMI sensor driver"

	depends on QCOM_QMI_HELPERS && THERMAL_OF && QTI_THERMAL

	help

	   This enables to list the QTI remote subsystem temperature sensors.

	   This driver can read the temperature of the remote sensor.

	   These sensors can take thresholds and notify the thermal

	   framework when the threshold is reached.





config QTI_CPU_ISOLATE_COOLING_DEVICE

	tristate "QTI CPU Isolate cooling devices"

	depends on THERMAL_OF && QTI_THERMAL

drivers/thermal/qcom/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -4,4 +4,6 @@ obj-$(CONFIG_QCOM_TSENS) += qcom_tsens.o 
qcom_tsens-y			+= tsens.o tsens-common.o tsens-v0_1.o \

				   tsens-8960.o tsens-v2.o tsens-v1.o

obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM)	+= qcom-spmi-temp-alarm.o

obj-$(CONFIG_QTI_QMI_SENSOR) += qti_qmi_sensor.o

qti_qmi_sensor-y += thermal_sensor_service_v01.o qmi_sensors.o

obj-$(CONFIG_QTI_CPU_ISOLATE_COOLING_DEVICE) += cpu_isolate.o

drivers/thermal/qcom/qmi_sensors.c

0 → 100644
+724 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.

 */



#define pr_fmt(fmt) "%s:%s " fmt, KBUILD_MODNAME, __func__



#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/thermal.h>

#include <linux/err.h>

#include <linux/slab.h>

#include <linux/of.h>

#include <linux/soc/qcom/qmi.h>

#include <linux/net.h>

#include <linux/kernel.h>

#include <linux/suspend.h>



#include "thermal_sensor_service_v01.h"

#include "../thermal_core.h"



#define QMI_SENS_DRIVER		"qmi-therm-sensors"

#define QMI_TS_RESP_TOUT	msecs_to_jiffies(100)

#define QMI_CLIENT_NAME_LENGTH	40

#define QMI_FL_SIGN		0x80000000

#define QMI_FL_EXP		0x7f800000

#define QMI_FL_MANTISSA		0x007fffff

#define QMI_FL_NORM		0x00800000

#define QMI_FL_SIGN_BIT		31

#define QMI_MANTISSA_MSB	23



enum qmi_ts_sensor {

	QMI_TS_PA,

	QMI_TS_PA_1,

	QMI_TS_PA_2,

	QMI_TS_QFE_PA_0,

	QMI_TS_QFE_WTR_0,

	QMI_TS_MODEM_MODEM,

	QMI_TS_MMW_0,

	QMI_TS_MMW_1,

	QMI_TS_MMW_2,

	QMI_TS_MMW_3,

	QMI_TS_MODEM_SKIN,

	QMI_TS_QFE_PA_MDM,

	QMI_TS_QFE_PA_WTR,

	QMI_TS_STREAMER_0,

	QMI_TS_MOD_MMW_0,

	QMI_TS_MOD_MMW_1,

	QMI_TS_MOD_MMW_2,

	QMI_TS_MOD_MMW_3,

	QMI_TS_RET_PA_0,

	QMI_TS_WTR_PA_0,

	QMI_TS_WTR_PA_1,

	QMI_TS_WTR_PA_2,

	QMI_TS_WTR_PA_3,

	QMI_SYS_THERM1,

	QMI_SYS_THERM2,

	QMI_TS_TSENS_1,

	QMI_TS_MAX_NR

};



struct qmi_sensor {

	struct device			*dev;

	char				qmi_name[QMI_CLIENT_NAME_LENGTH];

	bool                            connection_active;

	struct list_head		ts_node;

	struct thermal_zone_device	*tz_dev;

	int32_t				last_reading;

	int32_t				high_thresh;

	int32_t				low_thresh;

	struct qmi_ts_instance		*ts;

	enum qmi_ts_sensor		sens_type;

	struct work_struct		therm_notify_work;

};



struct qmi_ts_instance {

	struct device			*dev;

	struct qmi_handle		handle;

	struct mutex			mutex;

	uint32_t			inst_id;

	struct list_head		ts_sensor_list;

	struct work_struct		svc_arrive_work;

};



static struct qmi_ts_instance *ts_instances;

static int ts_inst_cnt;

static atomic_t in_suspend;



static char sensor_clients[QMI_TS_MAX_NR][QMI_CLIENT_NAME_LENGTH] = {

	{"pa"},

	{"pa_1"},

	{"pa_2"},

	{"qfe_pa0"},

	{"qfe_wtr0"},

	{"modem_tsens"},

	{"qfe_mmw0"},

	{"qfe_mmw1"},

	{"qfe_mmw2"},

	{"qfe_mmw3"},

	{"xo_therm"},

	{"qfe_pa_mdm"},

	{"qfe_pa_wtr"},

	{"qfe_mmw_streamer0"},

	{"qfe_mmw0_mod"},

	{"qfe_mmw1_mod"},

	{"qfe_mmw2_mod"},

	{"qfe_mmw3_mod"},

	{"qfe_ret_pa0"},

	{"qfe_wtr_pa0"},

	{"qfe_wtr_pa1"},

	{"qfe_wtr_pa2"},

	{"qfe_wtr_pa3"},

	{"sys_therm1"},

	{"sys_therm2"},

	{"modem_tsens1"},

};



static int32_t encode_qmi(int32_t val)

{

	uint32_t shift = 0, local_val = 0;

	int32_t temp_val = 0;



	if (val == INT_MAX || val == INT_MIN)

		return 0;



	temp_val = val = val / 1000;

	if (val < 0) {

		temp_val *= -1;

		local_val |= 1 << QMI_FL_SIGN_BIT;

	}

	shift = find_last_bit((const unsigned long *)&temp_val,

			sizeof(temp_val) * 8);

	local_val |= ((shift + 127) << QMI_MANTISSA_MSB);

	temp_val &= ~(1 << shift);



	local_val |= temp_val << (QMI_MANTISSA_MSB - shift);

	pr_debug("inp:%d shift:%d out:%x temp_val:%x\n",

			val, shift, local_val, temp_val);



	return local_val;

}



static int32_t decode_qmi(int32_t val)

{

	int32_t sign = 0, shift = 0, local_val;



	sign = (val & QMI_FL_SIGN) ? -1 : 1;

	shift = (val & QMI_FL_EXP) >> QMI_MANTISSA_MSB;

	shift = QMI_MANTISSA_MSB - (shift - 127);

	local_val = (val & QMI_FL_MANTISSA) | QMI_FL_NORM;

	pr_debug("val:0x%x sign:%d shift:%d mantissa:%x temp:%d\n",

			val, sign, shift, local_val,

			sign * (local_val >> shift));



	return sign * (local_val >> shift);

}



static int qmi_sensor_pm_notify(struct notifier_block *nb,

				unsigned long mode, void *_unused)

{

	switch (mode) {

	case PM_HIBERNATION_PREPARE:

	case PM_RESTORE_PREPARE:

	case PM_SUSPEND_PREPARE:

		atomic_set(&in_suspend, 1);

		break;

	case PM_POST_HIBERNATION:

	case PM_POST_RESTORE:

	case PM_POST_SUSPEND:

		atomic_set(&in_suspend, 0);

		break;

	default:

		break;

	}

	return 0;

}



static struct notifier_block qmi_sensor_pm_nb = {

	.notifier_call = qmi_sensor_pm_notify,

};



static void qmi_ts_thresh_notify(struct work_struct *work)

{

	struct qmi_sensor *qmi_sens = container_of(work,

						struct qmi_sensor,

						therm_notify_work);



	of_thermal_handle_trip_temp(qmi_sens->dev, qmi_sens->tz_dev,

				qmi_sens->last_reading);

};



static void qmi_ts_update_temperature(struct qmi_ts_instance *ts,

		const struct ts_temp_report_ind_msg_v01 *ind_msg,

		uint8_t notify)

{

	struct qmi_sensor *qmi_sens;



	list_for_each_entry(qmi_sens, &ts->ts_sensor_list,

					ts_node) {

		if ((strncasecmp(qmi_sens->qmi_name,

			ind_msg->sensor_id.sensor_id,

			QMI_TS_SENSOR_ID_LENGTH_MAX_V01)))

			continue;



		qmi_sens->last_reading =

			decode_qmi(ind_msg->temp) * 1000;

		pr_debug("sensor:%s temperature:%d\n",

				qmi_sens->qmi_name, qmi_sens->last_reading);

		if (!qmi_sens->tz_dev)

			return;

		if (notify &&

			((qmi_sens->high_thresh != INT_MAX &&

			qmi_sens->last_reading >= qmi_sens->high_thresh) ||

			(qmi_sens->low_thresh != INT_MIN &&

			 qmi_sens->last_reading <= qmi_sens->low_thresh))) {

			pr_debug("Sensor:%s Notify. temp:%d\n",

					ind_msg->sensor_id.sensor_id,

					qmi_sens->last_reading);

			queue_work(system_highpri_wq,

					&qmi_sens->therm_notify_work);

		}

		return;

	}

}



void qmi_ts_ind_cb(struct qmi_handle *qmi, struct sockaddr_qrtr *sq,

				   struct qmi_txn *txn, const void *decoded)

{

	const struct ts_temp_report_ind_msg_v01 *ind_msg = decoded;

	uint8_t notify = 0;

	struct qmi_ts_instance *ts = container_of(qmi, struct qmi_ts_instance,

							handle);



	if (!txn) {

		pr_err("Invalid transaction\n");

		return;

	}



	if ((ind_msg->report_type != QMI_TS_TEMP_REPORT_CURRENT_TEMP_V01) ||

		ind_msg->seq_num_valid)

		notify = 1;



	if (ind_msg->temp_valid)

		qmi_ts_update_temperature(ts, ind_msg, notify);

	else

		pr_err("Error invalid temperature field.\n");

}



static int qmi_ts_request(struct qmi_sensor *qmi_sens,

				bool send_current_temp_report)

{

	int ret = 0;

	struct ts_register_notification_temp_resp_msg_v01 resp;

	struct ts_register_notification_temp_req_msg_v01 req;

	struct qmi_ts_instance *ts = qmi_sens->ts;

	struct qmi_txn txn;



	memset(&req, 0, sizeof(req));

	memset(&resp, 0, sizeof(resp));



	strlcpy(req.sensor_id.sensor_id, qmi_sens->qmi_name,

		QMI_TS_SENSOR_ID_LENGTH_MAX_V01);

	req.seq_num = 0;

	if (send_current_temp_report) {

		req.send_current_temp_report = 1;

		req.seq_num_valid = true;

	} else {

		req.seq_num_valid = false;

		req.temp_threshold_high_valid =

			qmi_sens->high_thresh != INT_MAX;

		req.temp_threshold_high =

			encode_qmi(qmi_sens->high_thresh);

		req.temp_threshold_low_valid =

			qmi_sens->low_thresh != INT_MIN;

		req.temp_threshold_low =

			encode_qmi(qmi_sens->low_thresh);

	}



	mutex_lock(&ts->mutex);



	ret = qmi_txn_init(&ts->handle, &txn,

		ts_register_notification_temp_resp_msg_v01_ei, &resp);

	if (ret < 0) {

		pr_err("qmi txn init failed for %s ret:%d\n",

			qmi_sens->qmi_name, ret);

		goto qmi_send_exit;

	}



	ret = qmi_send_request(&ts->handle, NULL, &txn,

			QMI_TS_REGISTER_NOTIFICATION_TEMP_REQ_V01,

			TS_REGISTER_NOTIFICATION_TEMP_REQ_MSG_V01_MAX_MSG_LEN,

			ts_register_notification_temp_req_msg_v01_ei, &req);

	if (ret < 0) {

		pr_err("qmi txn send failed for %s ret:%d\n",

			qmi_sens->qmi_name, ret);

		qmi_txn_cancel(&txn);

		goto qmi_send_exit;

	}



	ret = qmi_txn_wait(&txn, QMI_TS_RESP_TOUT);

	if (ret < 0) {

		pr_err("qmi txn wait failed for %s ret:%d\n",

			qmi_sens->qmi_name, ret);

		goto qmi_send_exit;

	}

	if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {

		ret = resp.resp.result;

		pr_err("qmi NOT success for %s ret:%d\n",

			qmi_sens->qmi_name, ret);

		goto qmi_send_exit;

	}

	ret = 0;



qmi_send_exit:

	mutex_unlock(&ts->mutex);

	return ret;

}



static int qmi_sensor_read(void *data, int *temp)

{

	struct qmi_sensor *qmi_sens = (struct qmi_sensor *)data;



	if (qmi_sens->connection_active && !atomic_read(&in_suspend))

		qmi_ts_request(qmi_sens, true);

	*temp = qmi_sens->last_reading;



	return 0;

}



static int qmi_sensor_set_trips(void *data, int low, int high)

{

	struct qmi_sensor *qmi_sens = (struct qmi_sensor *)data;

	int ret = 0;



	if (qmi_sens->high_thresh == high &&

		qmi_sens->low_thresh == low)

		return ret;

	qmi_sens->high_thresh = high;

	qmi_sens->low_thresh = low;

	if (!qmi_sens->connection_active)

		return ret;

	ret = qmi_ts_request(qmi_sens, false);

	if (ret)

		pr_err("Sensor:%s set high trip:%d low trip:%d error%d\n",

				qmi_sens->qmi_name,

				qmi_sens->high_thresh,

				qmi_sens->low_thresh,

				ret);



	return ret;

}



static struct thermal_zone_of_device_ops qmi_sensor_ops = {

	.get_temp = qmi_sensor_read,

	.set_trips = qmi_sensor_set_trips,

};



static struct qmi_msg_handler handlers[] = {

	{

		.type = QMI_INDICATION,

		.msg_id = QMI_TS_TEMP_REPORT_IND_V01,

		.ei = ts_temp_report_ind_msg_v01_ei,

		.decoded_size = sizeof(struct ts_temp_report_ind_msg_v01),

		.fn = qmi_ts_ind_cb

	},

	{}

};



static int qmi_register_sensor_device(struct qmi_sensor *qmi_sens)

{

	int ret = 0;



	qmi_sens->tz_dev = thermal_zone_of_sensor_register(

				qmi_sens->dev,

				qmi_sens->sens_type + qmi_sens->ts->inst_id,

				qmi_sens, &qmi_sensor_ops);

	if (IS_ERR(qmi_sens->tz_dev)) {

		ret = PTR_ERR(qmi_sens->tz_dev);

		if (ret != -ENODEV)

			pr_err("sensor register failed for %s, ret:%d\n",

				qmi_sens->qmi_name, ret);

		qmi_sens->tz_dev = NULL;

		return ret;

	}

	pr_debug("Sensor register success for %s\n", qmi_sens->qmi_name);



	return 0;

}



static int verify_sensor_and_register(struct qmi_ts_instance *ts)

{

	struct ts_get_sensor_list_req_msg_v01 req;

	struct ts_get_sensor_list_resp_msg_v01 *ts_resp;

	int ret = 0, i;

	struct qmi_txn txn;



	memset(&req, 0, sizeof(req));

	/* size of ts_resp is very high, use heap memory rather than stack */

	ts_resp = kzalloc(sizeof(*ts_resp), GFP_KERNEL);

	if (!ts_resp)

		return -ENOMEM;



	mutex_lock(&ts->mutex);

	ret = qmi_txn_init(&ts->handle, &txn,

		ts_get_sensor_list_resp_msg_v01_ei, ts_resp);

	if (ret < 0) {

		pr_err("Transaction Init error for inst_id:0x%x ret:%d\n",

			ts->inst_id, ret);

		goto reg_exit;

	}



	ret = qmi_send_request(&ts->handle, NULL, &txn,

			QMI_TS_GET_SENSOR_LIST_REQ_V01,

			TS_GET_SENSOR_LIST_REQ_MSG_V01_MAX_MSG_LEN,

			ts_get_sensor_list_req_msg_v01_ei,

			&req);

	if (ret < 0) {

		qmi_txn_cancel(&txn);

		goto reg_exit;

	}



	ret = qmi_txn_wait(&txn, QMI_TS_RESP_TOUT);

	if (ret < 0) {

		pr_err("Transaction wait error for inst_id:0x%x ret:%d\n",

			ts->inst_id, ret);

		goto reg_exit;

	}

	if (ts_resp->resp.result != QMI_RESULT_SUCCESS_V01) {

		ret = ts_resp->resp.result;

		pr_err("Get sensor list NOT success for inst_id:0x%x ret:%d\n",

			ts->inst_id, ret);

		goto reg_exit;

	}

	mutex_unlock(&ts->mutex);



	for (i = 0; i < ts_resp->sensor_list_len; i++) {

		struct qmi_sensor *qmi_sens = NULL;



		list_for_each_entry(qmi_sens, &ts->ts_sensor_list,

					ts_node) {

			if ((strncasecmp(qmi_sens->qmi_name,

				ts_resp->sensor_list[i].sensor_id,

				QMI_TS_SENSOR_ID_LENGTH_MAX_V01)))

				continue;



			qmi_sens->connection_active = true;

			/*

			 * Send a temperature request notification.

			 */

			qmi_ts_request(qmi_sens, true);

			if (!qmi_sens->tz_dev)

				ret = qmi_register_sensor_device(qmi_sens);

			break;

		}

	}



	kfree(ts_resp);

	return ret;



reg_exit:

	mutex_unlock(&ts->mutex);

	kfree(ts_resp);



	return ret;

}



static void qmi_ts_svc_arrive(struct work_struct *work)

{

	struct qmi_ts_instance *ts = container_of(work,

						struct qmi_ts_instance,

						svc_arrive_work);



	verify_sensor_and_register(ts);

}



static void thermal_qmi_net_reset(struct qmi_handle *qmi)

{

	struct qmi_ts_instance *ts = container_of(qmi,

						struct qmi_ts_instance,

						handle);

	struct qmi_sensor *qmi_sens = NULL;

	int ret;



	pr_debug("reset QMI server\n");

	list_for_each_entry(qmi_sens, &ts->ts_sensor_list,

					ts_node) {

		if (!qmi_sens->connection_active)

			continue;

		qmi_ts_request(qmi_sens, true);

		ret = qmi_ts_request(qmi_sens, false);

		if (ret)

			pr_err("Sensor:%s set high trip:%d low trip:%d err%d\n",

				qmi_sens->tz_dev->type,

				qmi_sens->high_thresh,

				qmi_sens->low_thresh,

				ret);

	}

}



static void thermal_qmi_del_server(struct qmi_handle *qmi,

				    struct qmi_service *service)

{

	struct qmi_ts_instance *ts = container_of(qmi,

						struct qmi_ts_instance,

						handle);

	struct qmi_sensor *qmi_sens = NULL;



	pr_debug("QMI server deleted\n");

	list_for_each_entry(qmi_sens, &ts->ts_sensor_list, ts_node)

		qmi_sens->connection_active = false;

}



static int thermal_qmi_new_server(struct qmi_handle *qmi,

				    struct qmi_service *service)

{

	struct qmi_ts_instance *ts = container_of(qmi,

						struct qmi_ts_instance,

						handle);

	struct sockaddr_qrtr sq = {AF_QIPCRTR, service->node, service->port};



	mutex_lock(&ts->mutex);

	kernel_connect(qmi->sock, (struct sockaddr *)&sq, sizeof(sq), 0);

	mutex_unlock(&ts->mutex);

	queue_work(system_highpri_wq, &ts->svc_arrive_work);



	return 0;

}



static struct qmi_ops thermal_qmi_event_ops = {

	.new_server = thermal_qmi_new_server,

	.del_server = thermal_qmi_del_server,

	.net_reset = thermal_qmi_net_reset,

};



static void qmi_ts_cleanup(void)

{

	struct qmi_ts_instance *ts;

	struct qmi_sensor *qmi_sens, *c_next;

	int idx = 0;



	for (; idx < ts_inst_cnt; idx++) {

		ts = &ts_instances[idx];

		mutex_lock(&ts->mutex);

		list_for_each_entry_safe(qmi_sens, c_next,

			&ts->ts_sensor_list, ts_node) {

			qmi_sens->connection_active = false;

			if (qmi_sens->tz_dev)

				thermal_zone_of_sensor_unregister(

				qmi_sens->dev, qmi_sens->tz_dev);



			list_del(&qmi_sens->ts_node);

		}

		qmi_handle_release(&ts->handle);



		mutex_unlock(&ts->mutex);

	}

	ts_inst_cnt = 0;

}



static int of_get_qmi_ts_platform_data(struct device *dev)

{

	int ret = 0, i = 0, idx = 0;

	struct device_node *np = dev->of_node;

	struct device_node *subsys_np = NULL;

	struct qmi_ts_instance *ts;

	struct qmi_sensor *qmi_sens;

	int sens_name_max = 0, sens_idx = 0, subsys_cnt = 0;



	subsys_cnt = of_get_available_child_count(np);

	if (!subsys_cnt) {

		dev_err(dev, "No child node to process\n");

		return -EFAULT;

	}



	ts = devm_kcalloc(dev, subsys_cnt, sizeof(*ts), GFP_KERNEL);

	if (!ts)

		return -ENOMEM;



	for_each_available_child_of_node(np, subsys_np) {

		if (idx >= subsys_cnt)

			break;



		ret = of_property_read_u32(subsys_np, "qcom,instance-id",

					&ts[idx].inst_id);

		if (ret) {

			dev_err(dev, "error reading qcom,insance-id. ret:%d\n",

					ret);

			goto data_fetch_err;

		}



		ts[idx].dev = dev;

		mutex_init(&ts[idx].mutex);

		INIT_LIST_HEAD(&ts[idx].ts_sensor_list);

		INIT_WORK(&ts[idx].svc_arrive_work, qmi_ts_svc_arrive);



		sens_name_max = of_property_count_strings(subsys_np,

					"qcom,qmi-sensor-names");

		if (sens_name_max <= 0) {

			dev_err(dev, "Invalid or no sensor. err:%d\n",

					sens_name_max);

			ret = -EINVAL;

			goto data_fetch_err;

		}



		for (sens_idx = 0; sens_idx < sens_name_max; sens_idx++) {

			const char *qmi_name;



			qmi_sens = devm_kzalloc(dev, sizeof(*qmi_sens),

							GFP_KERNEL);

			if (!qmi_sens) {

				ret = -ENOMEM;

				goto data_fetch_err;

			}



			of_property_read_string_index(subsys_np,

					"qcom,qmi-sensor-names", sens_idx,

					&qmi_name);

			strlcpy(qmi_sens->qmi_name, qmi_name,

						QMI_CLIENT_NAME_LENGTH);

			/* Check for supported qmi sensors */

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

				if (!strcmp(sensor_clients[i],

							qmi_sens->qmi_name))

					break;

			}



			if (i >= QMI_TS_MAX_NR) {

				dev_err(dev, "Unknown sensor:%s\n",

					qmi_sens->qmi_name);

				ret = -EINVAL;

				goto data_fetch_err;

			}

			dev_dbg(dev, "QMI sensor:%s available\n", qmi_name);

			qmi_sens->sens_type = i;

			qmi_sens->ts = &ts[idx];

			qmi_sens->dev = dev;

			qmi_sens->last_reading = 0;

			qmi_sens->high_thresh = INT_MAX;

			qmi_sens->low_thresh = INT_MIN;

			INIT_WORK(&qmi_sens->therm_notify_work,

					qmi_ts_thresh_notify);

			list_add(&qmi_sens->ts_node, &ts[idx].ts_sensor_list);

		}

		idx++;

	}

	ts_instances = ts;

	ts_inst_cnt = subsys_cnt;



	return 0;

data_fetch_err:

	of_node_put(subsys_np);

	return ret;

}



static int qmi_sens_device_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	int ret = 0, idx = 0;

	struct qmi_ts_instance *ts;



	ret = of_get_qmi_ts_platform_data(dev);

	if (ret)

		goto probe_err;



	if (!ts_instances || !ts_inst_cnt) {

		dev_err(dev, "Empty ts instances\n");

		return -EINVAL;

	}



	for (; idx < ts_inst_cnt; idx++) {

		ts = &ts_instances[idx];

		if (list_empty(&ts->ts_sensor_list)) {

			ret = -ENODEV;

			goto probe_err;

		}

		ret = qmi_handle_init(&ts->handle,

			TS_GET_SENSOR_LIST_RESP_MSG_V01_MAX_MSG_LEN,

			&thermal_qmi_event_ops, handlers);

		if (ret < 0) {

			dev_err(dev, "QMI[0x%x] handle init failed. err:%d\n",

					ts->inst_id, ret);

			goto probe_err;

		}

		ret = qmi_add_lookup(&ts->handle, TS_SERVICE_ID_V01,

				TS_SERVICE_VERS_V01, ts->inst_id);

		if (ret < 0) {

			dev_err(dev, "QMI register failed for 0x%x, ret:%d\n",

				ts->inst_id, ret);

			goto probe_err;

		}

	}

	atomic_set(&in_suspend, 0);

	register_pm_notifier(&qmi_sensor_pm_nb);

	return 0;



probe_err:

	qmi_ts_cleanup();

	return ret;

}



static int qmi_sens_device_remove(struct platform_device *pdev)

{

	qmi_ts_cleanup();

	unregister_pm_notifier(&qmi_sensor_pm_nb);



	return 0;

}



static const struct of_device_id qmi_sens_device_match[] = {

	{.compatible = "qcom,qmi-sensors"},

	{}

};



static struct platform_driver qmi_sens_device_driver = {

	.probe          = qmi_sens_device_probe,

	.remove         = qmi_sens_device_remove,

	.driver         = {

		.name   = QMI_SENS_DRIVER,

		.of_match_table = qmi_sens_device_match,

	},

};



module_platform_driver(qmi_sens_device_driver);

MODULE_LICENSE("GPL v2");

drivers/thermal/qcom/thermal_sensor_service_v01.c

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drivers/thermal/qcom/thermal_sensor_service_v01.h

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+82 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.

 */



#ifndef THERMAL_SENSOR_SERVICE_V01_H

#define THERMAL_SENSOR_SERVICE_V01_H



#define TS_SERVICE_ID_V01 0x17

#define TS_SERVICE_VERS_V01 0x01



#define QMI_TS_GET_SENSOR_LIST_RESP_V01 0x0020

#define QMI_TS_GET_SUPPORTED_MSGS_REQ_V01 0x001E

#define QMI_TS_GET_SUPPORTED_MSGS_RESP_V01 0x001E

#define QMI_TS_REGISTER_NOTIFICATION_TEMP_REQ_V01 0x0021

#define QMI_TS_REGISTER_NOTIFICATION_TEMP_RESP_V01 0x0021

#define QMI_TS_GET_SUPPORTED_FIELDS_RESP_V01 0x001F

#define QMI_TS_GET_SENSOR_LIST_REQ_V01 0x0020

#define QMI_TS_TEMP_REPORT_IND_V01 0x0022

#define QMI_TS_GET_SUPPORTED_FIELDS_REQ_V01 0x001F



#define QMI_TS_SENSOR_ID_LENGTH_MAX_V01 32

#define QMI_TS_SENSOR_LIST_MAX_V01 32



struct ts_sensor_type_v01 {

	char sensor_id[QMI_TS_SENSOR_ID_LENGTH_MAX_V01 + 1];

};



struct ts_get_sensor_list_req_msg_v01 {

	char placeholder;

};

#define TS_GET_SENSOR_LIST_REQ_MSG_V01_MAX_MSG_LEN 0

extern struct qmi_elem_info ts_get_sensor_list_req_msg_v01_ei[];



struct ts_get_sensor_list_resp_msg_v01 {

	struct qmi_response_type_v01 resp;

	uint8_t sensor_list_valid;

	uint32_t sensor_list_len;

	struct ts_sensor_type_v01 sensor_list[QMI_TS_SENSOR_LIST_MAX_V01];

};

#define TS_GET_SENSOR_LIST_RESP_MSG_V01_MAX_MSG_LEN 1067

extern struct qmi_elem_info ts_get_sensor_list_resp_msg_v01_ei[];



struct ts_register_notification_temp_req_msg_v01 {

	struct ts_sensor_type_v01 sensor_id;

	uint8_t send_current_temp_report;

	uint8_t temp_threshold_high_valid;

	int temp_threshold_high;

	uint8_t temp_threshold_low_valid;

	int temp_threshold_low;

	uint8_t seq_num_valid;

	uint32_t seq_num;

};

#define TS_REGISTER_NOTIFICATION_TEMP_REQ_MSG_V01_MAX_MSG_LEN 61

extern struct qmi_elem_info ts_register_notification_temp_req_msg_v01_ei[];



struct ts_register_notification_temp_resp_msg_v01 {

	struct qmi_response_type_v01 resp;

};

#define TS_REGISTER_NOTIFICATION_TEMP_RESP_MSG_V01_MAX_MSG_LEN 7

extern struct qmi_elem_info ts_register_notification_temp_resp_msg_v01_ei[];



enum ts_temp_report_type_enum_v01 {

	TS_TEMP_REPORT_TYPE_ENUM_MIN_VAL_V01 = INT_MIN,

	QMI_TS_TEMP_REPORT_CURRENT_TEMP_V01 = 0,

	QMI_TS_TEMP_REPORT_THRESHOLD_HIGH_V01 = 1,

	QMI_TS_TEMP_REPORT_THRESHOLD_LOW_V01 = 2,

	TS_TEMP_REPORT_TYPE_ENUM_MAX_VAL_V01 = INT_MAX,

};



struct ts_temp_report_ind_msg_v01 {

	struct ts_sensor_type_v01 sensor_id;

	enum ts_temp_report_type_enum_v01 report_type;

	uint8_t temp_valid;

	long temp;

	uint8_t seq_num_valid;

	uint32_t seq_num;

};

#define TS_TEMP_REPORT_IND_MSG_V01_MAX_MSG_LEN 57

extern struct qmi_elem_info ts_temp_report_ind_msg_v01_ei[];



#endif