76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "priv.h"
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#include <subdev/gpio.h>
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int
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gt215_therm_fan_sense(struct nvkm_therm *therm)
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{
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struct nvkm_device *device = therm->subdev.device;
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u32 tach = nvkm_rd32(device, 0x00e728) & 0x0000ffff;
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u32 ctrl = nvkm_rd32(device, 0x00e720);
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if (ctrl & 0x00000001)
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return tach * 60 / 2;
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return -ENODEV;
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}
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static void
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gt215_therm_init(struct nvkm_therm *therm)
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{
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struct nvkm_device *device = therm->subdev.device;
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struct dcb_gpio_func *tach = &therm->fan->tach;
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g84_sensor_setup(therm);
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/* enable fan tach, count revolutions per-second */
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nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002);
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if (tach->func != DCB_GPIO_UNUSED) {
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nvkm_wr32(device, 0x00e724, device->crystal * 1000);
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nvkm_mask(device, 0x00e720, 0x001f0000, tach->line << 16);
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nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001);
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}
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nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000);
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}
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static const struct nvkm_therm_func
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gt215_therm = {
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.init = gt215_therm_init,
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.fini = g84_therm_fini,
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.pwm_ctrl = nv50_fan_pwm_ctrl,
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.pwm_get = nv50_fan_pwm_get,
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.pwm_set = nv50_fan_pwm_set,
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.pwm_clock = nv50_fan_pwm_clock,
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.temp_get = g84_temp_get,
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.fan_sense = gt215_therm_fan_sense,
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.program_alarms = nvkm_therm_program_alarms_polling,
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};
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int
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gt215_therm_new(struct nvkm_device *device, int index,
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struct nvkm_therm **ptherm)
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{
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return nvkm_therm_new_(>215_therm, device, index, ptherm);
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}
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