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 static int 27 gp100_temp_get(struct nvkm_therm *therm) 28 { 29 struct nvkm_device *device = therm->subdev.device; 30 struct nvkm_subdev *subdev = &therm->subdev; 31 u32 tsensor = nvkm_rd32(device, 0x020460); 32 u32 inttemp = (tsensor & 0x0001fff8); 33 34 /* device SHADOWed */ 35 if (tsensor & 0x40000000) 36 nvkm_trace(subdev, "reading temperature from SHADOWed sensor\n"); 37 38 /* device valid */ 39 if (tsensor & 0x20000000) 40 return (inttemp >> 8); 41 else 42 return -ENODEV; 43 } 44 45 static const struct nvkm_therm_func 46 gp100_therm = { 47 .temp_get = gp100_temp_get, 48 .program_alarms = nvkm_therm_program_alarms_polling, 49 }; 50 51 int 52 gp100_therm_new(struct nvkm_device *device, int index, 53 struct nvkm_therm **ptherm) 54 { 55 return nvkm_therm_new_(&gp100_therm, device, index, ptherm); 56 } 57