LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/therm/gm107.c

   1/*
   2 * Copyright 2014 Martin Peres
   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: Martin Peres
  23 */
  24#include "priv.h"
  25
  26static int
  27gm107_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
  28{
  29        /* nothing to do, it seems hardwired */
  30        return 0;
  31}
  32
  33static int
  34gm107_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty)
  35{
  36        struct nvkm_device *device = therm->subdev.device;
  37        *divs = nvkm_rd32(device, 0x10eb20) & 0x1fff;
  38        *duty = nvkm_rd32(device, 0x10eb24) & 0x1fff;
  39        return 0;
  40}
  41
  42static int
  43gm107_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
  44{
  45        struct nvkm_device *device = therm->subdev.device;
  46        nvkm_mask(device, 0x10eb10, 0x1fff, divs); /* keep the high bits */
  47        nvkm_wr32(device, 0x10eb14, duty | 0x80000000);
  48        return 0;
  49}
  50
  51static int
  52gm107_fan_pwm_clock(struct nvkm_therm *therm, int line)
  53{
  54        return therm->subdev.device->crystal * 1000;
  55}
  56
  57static const struct nvkm_therm_func
  58gm107_therm = {
  59        .init = gf119_therm_init,
  60        .fini = g84_therm_fini,
  61        .pwm_ctrl = gm107_fan_pwm_ctrl,
  62        .pwm_get = gm107_fan_pwm_get,
  63        .pwm_set = gm107_fan_pwm_set,
  64        .pwm_clock = gm107_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
  70int
  71gm107_therm_new(struct nvkm_device *device, int index,
  72                struct nvkm_therm **ptherm)
  73{
  74        return nvkm_therm_new_(&gm107_therm, device, index, ptherm);
  75}
  76