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
  26 static int
  27 gm107_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
  28 {
  29         /* nothing to do, it seems hardwired */
  30         return 0;
  31 }
  32
  33 static int
  34 gm107_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
  42 static int
  43 gm107_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
  51 static int
  52 gm107_fan_pwm_clock(struct nvkm_therm *therm, int line)
  53 {
  54         return therm->subdev.device->crystal * 1000;
  55 }
  56
  57 static const struct nvkm_therm_func
  58 gm107_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
  70 int
  71 gm107_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 }