1 /* 2 * Copyright 2017 Rhys Kidd 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Rhys Kidd 23 */ 24 #include "priv.h" 25 26 #include <subdev/gsp.h> 27 28 static int 29 gp100_temp_get(struct nvkm_therm *therm) 30 { 31 struct nvkm_device *device = therm->subdev.device; 32 struct nvkm_subdev *subdev = &therm->subdev; 33 u32 tsensor = nvkm_rd32(device, 0x020460); 34 u32 inttemp = (tsensor & 0x0001fff8); 35 36 /* device SHADOWed */ 37 if (tsensor & 0x40000000) 38 nvkm_trace(subdev, "reading temperature from SHADOWed sensor\n"); 39 40 /* device valid */ 41 if (tsensor & 0x20000000) 42 return (inttemp >> 8); 43 else 44 return -ENODEV; 45 } 46 47 static const struct nvkm_therm_func 48 gp100_therm = { 49 .temp_get = gp100_temp_get, 50 .program_alarms = nvkm_therm_program_alarms_polling, 51 }; 52 53 int 54 gp100_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 55 struct nvkm_therm **ptherm) 56 { 57 if (nvkm_gsp_rm(device->gsp)) 58 return -ENODEV; 59 60 return nvkm_therm_new_(&gp100_therm, device, type, inst, ptherm); 61 } 62