projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b1871915 GG |
1 | /* |
| 2 | * Copyright (C) 2017 Chelsio Communications. All rights reserved. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify it | |
| 5 | * under the terms and conditions of the GNU General Public License, | |
| 6 | * version 2, as published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 11 | * more details. | |
| 12 | * | |
| 13 | * The full GNU General Public License is included in this distribution in | |
| 14 | * the file called "COPYING". | |
| 15 | * | |
| 16 | * Written by: Ganesh Goudar (ganeshgr@chelsio.com) | |
| 17 | */ | |
| 18 | ||
| 19 | #include "cxgb4.h" | |
| 20 | ||
| 21 | #define CXGB4_NUM_TRIPS 1 | |
| 22 | ||
| 23 | static int cxgb4_thermal_get_temp(struct thermal_zone_device *tzdev, | |
| 24 | int *temp) | |
| 25 | { | |
| 26 | struct adapter *adap = tzdev->devdata; | |
| 27 | u32 param, val; | |
| 28 | int ret; | |
| 29 | ||
| 30 | param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | | |
| 31 | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) | | |
| 32 | FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_TMP)); | |
| 33 | ||
| 34 | ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, | |
| 35 | ¶m, &val); | |
| 36 | if (ret < 0 || val == 0) | |
| 37 | return -1; | |
| 38 | ||
| 39 | *temp = val * 1000; | |
| 40 | return 0; | |
| 41 | } | |
| 42 | ||
| 43 | static int cxgb4_thermal_get_trip_type(struct thermal_zone_device *tzdev, | |
| 44 | int trip, enum thermal_trip_type *type) | |
| 45 | { | |
| 46 | struct adapter *adap = tzdev->devdata; | |
| 47 | ||
| 48 | if (!adap->ch_thermal.trip_temp) | |
| 49 | return -EINVAL; | |
| 50 | ||
| 51 | *type = adap->ch_thermal.trip_type; | |
| 52 | return 0; | |
| 53 | } | |
| 54 | ||
| 55 | static int cxgb4_thermal_get_trip_temp(struct thermal_zone_device *tzdev, | |
| 56 | int trip, int *temp) | |
| 57 | { | |
| 58 | struct adapter *adap = tzdev->devdata; | |
| 59 | ||
| 60 | if (!adap->ch_thermal.trip_temp) | |
| 61 | return -EINVAL; | |
| 62 | ||
| 63 | *temp = adap->ch_thermal.trip_temp; | |
| 64 | return 0; | |
| 65 | } | |
| 66 | ||
| 67 | static struct thermal_zone_device_ops cxgb4_thermal_ops = { | |
| 68 | .get_temp = cxgb4_thermal_get_temp, | |
| 69 | .get_trip_type = cxgb4_thermal_get_trip_type, | |
| 70 | .get_trip_temp = cxgb4_thermal_get_trip_temp, | |
| 71 | }; | |
| 72 | ||
| 73 | int cxgb4_thermal_init(struct adapter *adap) | |
| 74 | { | |
| 75 | struct ch_thermal *ch_thermal = &adap->ch_thermal; | |
| 76 | int num_trip = CXGB4_NUM_TRIPS; | |
| 77 | u32 param, val; | |
| 78 | int ret; | |
| 79 | ||
| 80 | /* on older firmwares we may not get the trip temperature, | |
| 81 | * set the num of trips to 0. | |
| 82 | */ | |
| 83 | param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | | |
| 84 | FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) | | |
| 85 | FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_MAXTMPTHRESH)); | |
| 86 | ||
| 87 | ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, | |
| 88 | ¶m, &val); | |
| 89 | if (ret < 0) { | |
| 90 | num_trip = 0; /* could not get trip temperature */ | |
| 91 | } else { | |
| 92 | ch_thermal->trip_temp = val * 1000; | |
| 93 | ch_thermal->trip_type = THERMAL_TRIP_CRITICAL; | |
| 94 | } | |
| 95 | ||
| 96 | ch_thermal->tzdev = thermal_zone_device_register("cxgb4", num_trip, | |
| 97 | 0, adap, | |
| 98 | &cxgb4_thermal_ops, | |
| 99 | NULL, 0, 0); | |
| 100 | if (IS_ERR(ch_thermal->tzdev)) { | |
| 101 | ret = PTR_ERR(ch_thermal->tzdev); | |
| 102 | dev_err(adap->pdev_dev, "Failed to register thermal zone\n"); | |
| 103 | ch_thermal->tzdev = NULL; | |
| 104 | return ret; | |
| 105 | } | |
| 106 | return 0; | |
| 107 | } | |
| 108 | ||
| 109 | int cxgb4_thermal_remove(struct adapter *adap) | |
| 110 | { | |
| 111 | if (adap->ch_thermal.tzdev) | |
| 112 | thermal_zone_device_unregister(adap->ch_thermal.tzdev); | |
| 113 | return 0; | |
| 114 | } |