drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   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: Ben Skeggs
  23  *          Martin Peres
  24  */
  25
  26 #include "priv.h"
  27
  28 static int
  29 pwm_info(struct nouveau_therm *therm, int *line, int *ctrl, int *indx)
  30 {
  31         if (*line == 0x04) {
  32                 *ctrl = 0x00e100;
  33                 *line = 4;
  34                 *indx = 0;
  35         } else
  36         if (*line == 0x09) {
  37                 *ctrl = 0x00e100;
  38                 *line = 9;
  39                 *indx = 1;
  40         } else
  41         if (*line == 0x10) {
  42                 *ctrl = 0x00e28c;
  43                 *line = 0;
  44                 *indx = 0;
  45         } else {
  46                 nv_error(therm, "unknown pwm ctrl for gpio %d\n", *line);
  47                 return -ENODEV;
  48         }
  49
  50         return 0;
  51 }
  52
  53 int
  54 nv50_fan_pwm_get(struct nouveau_therm *therm, int line, u32 *divs, u32 *duty)
  55 {
  56         int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id);
  57         if (ret)
  58                 return ret;
  59
  60         if (nv_rd32(therm, ctrl) & (1 << line)) {
  61                 *divs = nv_rd32(therm, 0x00e114 + (id * 8));
  62                 *duty = nv_rd32(therm, 0x00e118 + (id * 8));
  63                 return 0;
  64         }
  65
  66         return -EINVAL;
  67 }
  68
  69 int
  70 nv50_fan_pwm_set(struct nouveau_therm *therm, int line, u32 divs, u32 duty)
  71 {
  72         int ctrl, id, ret = pwm_info(therm, &line, &ctrl, &id);
  73         if (ret)
  74                 return ret;
  75
  76         nv_mask(therm, ctrl, 0x00010001 << line, 0x00000001 << line);
  77         nv_wr32(therm, 0x00e114 + (id * 8), divs);
  78         nv_wr32(therm, 0x00e118 + (id * 8), duty | 0x80000000);
  79         return 0;
  80 }
  81
  82 int
  83 nv50_temp_get(struct nouveau_therm *therm)
  84 {
  85         return nv_rd32(therm, 0x20400);
  86 }
  87
  88 static int
  89 nv50_therm_ctor(struct nouveau_object *parent,
  90                    struct nouveau_object *engine,
  91                    struct nouveau_oclass *oclass, void *data, u32 size,
  92                    struct nouveau_object **pobject)
  93 {
  94         struct nouveau_therm_priv *priv;
  95         struct nouveau_therm *therm;
  96         int ret;
  97
  98         ret = nouveau_therm_create(parent, engine, oclass, &priv);
  99         *pobject = nv_object(priv);
 100         therm = (void *) priv;
 101         if (ret)
 102                 return ret;
 103
 104         nouveau_therm_ic_ctor(therm);
 105         nouveau_therm_sensor_ctor(therm);
 106         nouveau_therm_fan_ctor(therm);
 107
 108         priv->fan.pwm_get = nv50_fan_pwm_get;
 109         priv->fan.pwm_set = nv50_fan_pwm_set;
 110
 111         therm->temp_get = nv50_temp_get;
 112         therm->fan_get = nouveau_therm_fan_get;
 113         therm->fan_set = nouveau_therm_fan_set;
 114         therm->fan_sense = nouveau_therm_fan_sense;
 115         therm->attr_get = nouveau_therm_attr_get;
 116         therm->attr_set = nouveau_therm_attr_set;
 117
 118         return 0;
 119 }
 120
 121 struct nouveau_oclass
 122 nv50_therm_oclass = {
 123         .handle = NV_SUBDEV(THERM, 0x50),
 124         .ofuncs = &(struct nouveau_ofuncs) {
 125                 .ctor = nv50_therm_ctor,
 126                 .dtor = _nouveau_therm_dtor,
 127                 .init = nouveau_therm_init,
 128                 .fini = nouveau_therm_fini,
 129         },
 130 };