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 u32 tach = nv_rd32(therm, 0x00e728) & 0x0000ffff; 32 u32 ctrl = nv_rd32(therm, 0x00e720); 33 if (ctrl & 0x00000001) 34 return tach * 60 / 2; 35 return -ENODEV; 36 } 37 38 static int 39 gt215_therm_init(struct nvkm_object *object) 40 { 41 struct nvkm_therm_priv *therm = (void *)object; 42 struct dcb_gpio_func *tach = &therm->fan->tach; 43 int ret; 44 45 ret = nvkm_therm_init(&therm->base); 46 if (ret) 47 return ret; 48 49 g84_sensor_setup(&therm->base); 50 51 /* enable fan tach, count revolutions per-second */ 52 nv_mask(therm, 0x00e720, 0x00000003, 0x00000002); 53 if (tach->func != DCB_GPIO_UNUSED) { 54 nv_wr32(therm, 0x00e724, nv_device(therm)->crystal * 1000); 55 nv_mask(therm, 0x00e720, 0x001f0000, tach->line << 16); 56 nv_mask(therm, 0x00e720, 0x00000001, 0x00000001); 57 } 58 nv_mask(therm, 0x00e720, 0x00000002, 0x00000000); 59 60 return 0; 61 } 62 63 static int 64 gt215_therm_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 65 struct nvkm_oclass *oclass, void *data, u32 size, 66 struct nvkm_object **pobject) 67 { 68 struct nvkm_therm_priv *therm; 69 int ret; 70 71 ret = nvkm_therm_create(parent, engine, oclass, &therm); 72 *pobject = nv_object(therm); 73 if (ret) 74 return ret; 75 76 therm->base.pwm_ctrl = nv50_fan_pwm_ctrl; 77 therm->base.pwm_get = nv50_fan_pwm_get; 78 therm->base.pwm_set = nv50_fan_pwm_set; 79 therm->base.pwm_clock = nv50_fan_pwm_clock; 80 therm->base.temp_get = g84_temp_get; 81 therm->base.fan_sense = gt215_therm_fan_sense; 82 therm->sensor.program_alarms = nvkm_therm_program_alarms_polling; 83 return nvkm_therm_preinit(&therm->base); 84 } 85 86 struct nvkm_oclass 87 gt215_therm_oclass = { 88 .handle = NV_SUBDEV(THERM, 0xa3), 89 .ofuncs = &(struct nvkm_ofuncs) { 90 .ctor = gt215_therm_ctor, 91 .dtor = _nvkm_therm_dtor, 92 .init = gt215_therm_init, 93 .fini = g84_therm_fini, 94 }, 95 }; 96