drivers/gpu/drm/nouveau/nvkm/subdev/therm/gf119.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  */
  24 #include "priv.h"
  25
  26 static int
  27 pwm_info(struct nvkm_therm *therm, int line)
  28 {
  29         struct nvkm_subdev *subdev = &therm->subdev;
  30         struct nvkm_device *device = subdev->device;
  31         u32 gpio = nvkm_rd32(device, 0x00d610 + (line * 0x04));
  32
  33         switch (gpio & 0x000000c0) {
  34         case 0x00000000: /* normal mode, possibly pwm forced off by us */
  35         case 0x00000040: /* nvio special */
  36                 switch (gpio & 0x0000001f) {
  37                 case 0x00: return 2;
  38                 case 0x19: return 1;
  39                 case 0x1c: return 0;
  40                 case 0x1e: return 2;
  41                 default:
  42                         break;
  43                 }
  44                 break;
  45         default:
  46                 break;
  47         }
  48
  49         nvkm_error(subdev, "GPIO %d unknown PWM: %08x\n", line, gpio);
  50         return -ENODEV;
  51 }
  52
  53 int
  54 gf119_fan_pwm_ctrl(struct nvkm_therm *therm, int line, bool enable)
  55 {
  56         struct nvkm_device *device = therm->subdev.device;
  57         u32 data = enable ? 0x00000040 : 0x00000000;
  58         int indx = pwm_info(therm, line);
  59         if (indx < 0)
  60                 return indx;
  61         else if (indx < 2)
  62                 nvkm_mask(device, 0x00d610 + (line * 0x04), 0x000000c0, data);
  63         /* nothing to do for indx == 2, it seems hardwired to PTHERM */
  64         return 0;
  65 }
  66
  67 int
  68 gf119_fan_pwm_get(struct nvkm_therm *therm, int line, u32 *divs, u32 *duty)
  69 {
  70         struct nvkm_device *device = therm->subdev.device;
  71         int indx = pwm_info(therm, line);
  72         if (indx < 0)
  73                 return indx;
  74         else if (indx < 2) {
  75                 if (nvkm_rd32(device, 0x00d610 + (line * 0x04)) & 0x00000040) {
  76                         *divs = nvkm_rd32(device, 0x00e114 + (indx * 8));
  77                         *duty = nvkm_rd32(device, 0x00e118 + (indx * 8));
  78                         return 0;
  79                 }
  80         } else if (indx == 2) {
  81                 *divs = nvkm_rd32(device, 0x0200d8) & 0x1fff;
  82                 *duty = nvkm_rd32(device, 0x0200dc) & 0x1fff;
  83                 return 0;
  84         }
  85
  86         return -EINVAL;
  87 }
  88
  89 int
  90 gf119_fan_pwm_set(struct nvkm_therm *therm, int line, u32 divs, u32 duty)
  91 {
  92         struct nvkm_device *device = therm->subdev.device;
  93         int indx = pwm_info(therm, line);
  94         if (indx < 0)
  95                 return indx;
  96         else if (indx < 2) {
  97                 nvkm_wr32(device, 0x00e114 + (indx * 8), divs);
  98                 nvkm_wr32(device, 0x00e118 + (indx * 8), duty | 0x80000000);
  99         } else if (indx == 2) {
 100                 nvkm_mask(device, 0x0200d8, 0x1fff, divs); /* keep the high bits */
 101                 nvkm_wr32(device, 0x0200dc, duty | 0x40000000);
 102         }
 103         return 0;
 104 }
 105
 106 int
 107 gf119_fan_pwm_clock(struct nvkm_therm *therm, int line)
 108 {
 109         struct nvkm_device *device = therm->subdev.device;
 110         int indx = pwm_info(therm, line);
 111         if (indx < 0)
 112                 return 0;
 113         else if (indx < 2)
 114                 return (device->crystal * 1000) / 20;
 115         else
 116                 return device->crystal * 1000 / 10;
 117 }
 118
 119 void
 120 gf119_therm_init(struct nvkm_therm *therm)
 121 {
 122         struct nvkm_device *device = therm->subdev.device;
 123
 124         g84_sensor_setup(therm);
 125
 126         /* enable fan tach, count revolutions per-second */
 127         nvkm_mask(device, 0x00e720, 0x00000003, 0x00000002);
 128         if (therm->fan->tach.func != DCB_GPIO_UNUSED) {
 129                 nvkm_mask(device, 0x00d79c, 0x000000ff, therm->fan->tach.line);
 130                 nvkm_wr32(device, 0x00e724, device->crystal * 1000);
 131                 nvkm_mask(device, 0x00e720, 0x00000001, 0x00000001);
 132         }
 133         nvkm_mask(device, 0x00e720, 0x00000002, 0x00000000);
 134 }
 135
 136 static const struct nvkm_therm_func
 137 gf119_therm = {
 138         .init = gf119_therm_init,
 139         .fini = g84_therm_fini,
 140         .pwm_ctrl = gf119_fan_pwm_ctrl,
 141         .pwm_get = gf119_fan_pwm_get,
 142         .pwm_set = gf119_fan_pwm_set,
 143         .pwm_clock = gf119_fan_pwm_clock,
 144         .temp_get = g84_temp_get,
 145         .fan_sense = gt215_therm_fan_sense,
 146         .program_alarms = nvkm_therm_program_alarms_polling,
 147 };
 148
 149 int
 150 gf119_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 151                 struct nvkm_therm **ptherm)
 152 {
 153         return nvkm_therm_new_(&gf119_therm, device, type, inst, ptherm);
 154 }