1 /* 2 * Copyright 2012 Red Hat Inc. 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: Ben Skeggs 23 */ 24 #include "priv.h" 25 26 #include <subdev/gpio.h> 27 28 int 29 gt215_therm_fan_sense(struct nvkm_therm *therm) 30 { 31 struct nvkm_device *device = therm->subdev.device; 32 u32 tach = nvkm_rd32(device, 0x00e728) & 0x0000ffff; 33 u32 ctrl = nvkm_rd32(device, 0x00e720); 34 if (ctrl & 0x00000001) 35 return tach * 60 / 2; 36 return -ENODEV; 37 } 38 39 static void 40 gt215_therm_init(struct nvkm_therm *therm) 41 { 42 struct nvkm_device *device = therm->subdev.device; 43 struct dcb_gpio_func *tach = &therm->fan->tach; 44 45 g84_sensor_setup(therm); 46 47 /* enable fan tach, count revolutions per-second */ 48 nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002); 49 if (tach->func != DCB_GPIO_UNUSED) { 50 nvkm_wr32(device, 0x00e724, device->crystal * 1000); 51 nvkm_mask(device, 0x00e720, 0x001f0000, tach->line << 16); 52 nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001); 53 } 54 nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000); 55 } 56 57 static const struct nvkm_therm_func 58 gt215_therm = { 59 .init = gt215_therm_init, 60 .fini = g84_therm_fini, 61 .pwm_ctrl = nv50_fan_pwm_ctrl, 62 .pwm_get = nv50_fan_pwm_get, 63 .pwm_set = nv50_fan_pwm_set, 64 .pwm_clock = nv50_fan_pwm_clock, 65 .temp_get = g84_temp_get, 66 .fan_sense = gt215_therm_fan_sense, 67 .program_alarms = nvkm_therm_program_alarms_polling, 68 }; 69 70 int 71 gt215_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 72 struct nvkm_therm **ptherm) 73 { 74 return nvkm_therm_new_(>215_therm, device, type, inst, ptherm); 75 } 76