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