116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2017 Chelsio Communications. All rights reserved.
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*
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* Written by: Ganesh Goudar (ganeshgr@chelsio.com)
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*/
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#include "cxgb4.h"
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#define CXGB4_NUM_TRIPS 1
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static int cxgb4_thermal_get_temp(struct thermal_zone_device *tzdev,
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int *temp)
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{
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struct adapter *adap = tzdev->devdata;
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u32 param, val;
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int ret;
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param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
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FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) |
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FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_TMP));
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ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1,
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¶m, &val);
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if (ret < 0 || val == 0)
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return -1;
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*temp = val * 1000;
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return 0;
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}
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static int cxgb4_thermal_get_trip_type(struct thermal_zone_device *tzdev,
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int trip, enum thermal_trip_type *type)
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{
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struct adapter *adap = tzdev->devdata;
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if (!adap->ch_thermal.trip_temp)
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return -EINVAL;
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*type = adap->ch_thermal.trip_type;
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return 0;
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}
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static int cxgb4_thermal_get_trip_temp(struct thermal_zone_device *tzdev,
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int trip, int *temp)
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{
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struct adapter *adap = tzdev->devdata;
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if (!adap->ch_thermal.trip_temp)
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return -EINVAL;
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*temp = adap->ch_thermal.trip_temp;
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return 0;
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}
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static struct thermal_zone_device_ops cxgb4_thermal_ops = {
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.get_temp = cxgb4_thermal_get_temp,
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.get_trip_type = cxgb4_thermal_get_trip_type,
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.get_trip_temp = cxgb4_thermal_get_trip_temp,
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};
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int cxgb4_thermal_init(struct adapter *adap)
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{
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struct ch_thermal *ch_thermal = &adap->ch_thermal;
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char ch_tz_name[THERMAL_NAME_LENGTH];
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int num_trip = CXGB4_NUM_TRIPS;
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u32 param, val;
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int ret;
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/* on older firmwares we may not get the trip temperature,
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* set the num of trips to 0.
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*/
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param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
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FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) |
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FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_MAXTMPTHRESH));
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ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1,
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¶m, &val);
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if (ret < 0) {
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num_trip = 0; /* could not get trip temperature */
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} else {
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ch_thermal->trip_temp = val * 1000;
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ch_thermal->trip_type = THERMAL_TRIP_CRITICAL;
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}
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snprintf(ch_tz_name, sizeof(ch_tz_name), "cxgb4_%s", adap->name);
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ch_thermal->tzdev = thermal_zone_device_register(ch_tz_name, num_trip,
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0, adap,
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&cxgb4_thermal_ops,
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NULL, 0, 0);
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if (IS_ERR(ch_thermal->tzdev)) {
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ret = PTR_ERR(ch_thermal->tzdev);
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dev_err(adap->pdev_dev, "Failed to register thermal zone\n");
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ch_thermal->tzdev = NULL;
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return ret;
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}
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ret = thermal_zone_device_enable(ch_thermal->tzdev);
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if (ret) {
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dev_err(adap->pdev_dev, "Failed to enable thermal zone\n");
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thermal_zone_device_unregister(adap->ch_thermal.tzdev);
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return ret;
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}
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return 0;
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}
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int cxgb4_thermal_remove(struct adapter *adap)
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{
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if (adap->ch_thermal.tzdev) {
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thermal_zone_device_unregister(adap->ch_thermal.tzdev);
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adap->ch_thermal.tzdev = NULL;
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}
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return 0;
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}
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