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1/*2 * Copyright 2012 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */24#include "priv.h"25 26#include <subdev/gpio.h>27 28int29gt215_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 39static void40gt215_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 57static const struct nvkm_therm_func58gt215_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 70int71gt215_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