drivers/gpu/drm/nouveau/nouveau_temp.c

   1 /*
   2  * Copyright 2010 PathScale 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: Martin Peres
  23  */
  24
  25 #include <linux/module.h>
  26
  27 #include "drmP.h"
  28
  29 #include "nouveau_drm.h"
  30 #include "nouveau_pm.h"
  31
  32 #include <subdev/i2c.h>
  33 #include <subdev/bios/therm.h>
  34 #include <subdev/bios/extdev.h>
  35
  36 static int
  37 nv40_sensor_setup(struct drm_device *dev)
  38 {
  39         struct nouveau_device *device = nouveau_dev(dev);
  40         struct nouveau_drm *drm = nouveau_drm(dev);
  41
  42         /* enable ADC readout and disable the ALARM threshold */
  43         if (nv_device(drm->device)->chipset >= 0x46) {
  44                 nv_mask(device, 0x15b8, 0x80000000, 0);
  45                 nv_wr32(device, 0x15b0, 0x80003fff);
  46                 return nv_rd32(device, 0x15b4) & 0x3fff;
  47         } else {
  48                 nv_wr32(device, 0x15b0, 0xff);
  49                 return nv_rd32(device, 0x15b4) & 0xff;
  50         }
  51 }
  52
  53 int
  54 nv40_temp_get(struct drm_device *dev)
  55 {
  56         struct nouveau_device *device = nouveau_dev(dev);
  57         struct nouveau_drm *drm = nouveau_drm(dev);
  58         struct nouveau_pm *pm = nouveau_pm(dev);
  59         struct nouveau_pm_temp_sensor_constants *sensor = &pm->sensor_constants;
  60         int core_temp;
  61
  62         if (nv_device(drm->device)->chipset >= 0x46) {
  63                 nv_wr32(device, 0x15b0, 0x80003fff);
  64                 core_temp = nv_rd32(device, 0x15b4) & 0x3fff;
  65         } else {
  66                 nv_wr32(device, 0x15b0, 0xff);
  67                 core_temp = nv_rd32(device, 0x15b4) & 0xff;
  68         }
  69
  70         /* Setup the sensor if the temperature is 0 */
  71         if (core_temp == 0)
  72                 core_temp = nv40_sensor_setup(dev);
  73
  74         if (sensor->slope_div == 0)
  75                 sensor->slope_div = 1;
  76         if (sensor->offset_div == 0)
  77                 sensor->offset_div = 1;
  78         if (sensor->slope_mult < 1)
  79                 sensor->slope_mult = 1;
  80
  81         core_temp = core_temp * sensor->slope_mult / sensor->slope_div;
  82         core_temp = core_temp + sensor->offset_mult / sensor->offset_div;
  83         core_temp = core_temp + sensor->offset_constant - 8;
  84
  85         return core_temp;
  86 }
  87
  88 int
  89 nv84_temp_get(struct drm_device *dev)
  90 {
  91         struct nouveau_device *device = nouveau_dev(dev);
  92         return nv_rd32(device, 0x20400);
  93 }
  94
  95 void
  96 nouveau_temp_safety_checks(struct drm_device *dev)
  97 {
  98         struct nouveau_pm *pm = nouveau_pm(dev);
  99         struct nouveau_pm_threshold_temp *temps = &pm->threshold_temp;
 100
 101         if (temps->critical > 120)
 102                 temps->critical = 120;
 103         else if (temps->critical < 80)
 104                 temps->critical = 80;
 105
 106         if (temps->down_clock > 110)
 107                 temps->down_clock = 110;
 108         else if (temps->down_clock < 60)
 109                 temps->down_clock = 60;
 110 }
 111
 112 static bool
 113 probe_monitoring_device(struct nouveau_i2c_port *i2c,
 114                         struct i2c_board_info *info)
 115 {
 116         struct i2c_client *client;
 117
 118         request_module("%s%s", I2C_MODULE_PREFIX, info->type);
 119
 120         client = i2c_new_device(&i2c->adapter, info);
 121         if (!client)
 122                 return false;
 123
 124         if (!client->driver || client->driver->detect(client, info)) {
 125                 i2c_unregister_device(client);
 126                 return false;
 127         }
 128
 129         return true;
 130 }
 131
 132 static void
 133 nouveau_temp_probe_i2c(struct drm_device *dev)
 134 {
 135         struct nouveau_device *device = nouveau_dev(dev);
 136         struct nouveau_bios *bios = nouveau_bios(device);
 137         struct nouveau_i2c *i2c = nouveau_i2c(device);
 138         struct nvbios_extdev_func extdev_entry;
 139         struct i2c_board_info info[] = {
 140                 { I2C_BOARD_INFO("w83l785ts", 0x2d) },
 141                 { I2C_BOARD_INFO("w83781d", 0x2d) },
 142                 { I2C_BOARD_INFO("adt7473", 0x2e) },
 143                 { I2C_BOARD_INFO("adt7473", 0x2d) },
 144                 { I2C_BOARD_INFO("adt7473", 0x2c) },
 145                 { I2C_BOARD_INFO("f75375", 0x2e) },
 146                 { I2C_BOARD_INFO("lm99", 0x4c) },
 147                 { I2C_BOARD_INFO("lm90", 0x4c) },
 148                 { I2C_BOARD_INFO("lm90", 0x4d) },
 149                 { I2C_BOARD_INFO("adm1021", 0x18) },
 150                 { I2C_BOARD_INFO("adm1021", 0x19) },
 151                 { I2C_BOARD_INFO("adm1021", 0x1a) },
 152                 { I2C_BOARD_INFO("adm1021", 0x29) },
 153                 { I2C_BOARD_INFO("adm1021", 0x2a) },
 154                 { I2C_BOARD_INFO("adm1021", 0x2b) },
 155                 { I2C_BOARD_INFO("adm1021", 0x4c) },
 156                 { I2C_BOARD_INFO("adm1021", 0x4d) },
 157                 { I2C_BOARD_INFO("adm1021", 0x4e) },
 158                 { I2C_BOARD_INFO("lm63", 0x18) },
 159                 { I2C_BOARD_INFO("lm63", 0x4e) },
 160                 { }
 161         };
 162
 163         if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
 164                 struct i2c_board_info board[] = {
 165                         { I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) },
 166                         { }
 167                 };
 168
 169                 if (i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
 170                                   board, probe_monitoring_device))
 171                         return;
 172         }
 173
 174         if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
 175                 struct i2c_board_info board[] = {
 176                         { I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) },
 177                         { }
 178                 };
 179
 180                 if (i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
 181                                   board, probe_monitoring_device))
 182                         return;
 183         }
 184
 185         /* The vbios doesn't provide the address of an exisiting monitoring
 186            device. Let's try our static list.
 187          */
 188         i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device", info,
 189                       probe_monitoring_device);
 190 }
 191
 192 void
 193 nouveau_temp_init(struct drm_device *dev)
 194 {
 195         struct nouveau_drm *drm = nouveau_drm(dev);
 196         struct nouveau_device *device = nv_device(drm->device);
 197         struct nouveau_bios *bios = nouveau_bios(device);
 198         struct nouveau_pm *pm = nouveau_pm(dev);
 199         struct nouveau_pm_temp_sensor_constants *sensor = &pm->sensor_constants;
 200         struct nouveau_pm_threshold_temp *temps = &pm->threshold_temp;
 201         struct nvbios_therm_sensor bios_sensor;
 202         struct nvbios_therm_fan bios_fan;
 203
 204         /* store some safe defaults */
 205         sensor->offset_constant = 0;
 206         sensor->offset_mult = 0;
 207         sensor->offset_div = 1;
 208         sensor->slope_mult = 1;
 209         sensor->slope_div = 1;
 210
 211         if (!nvbios_therm_sensor_parse(bios, NVBIOS_THERM_DOMAIN_CORE,
 212                                        &bios_sensor)) {
 213                 sensor->slope_mult = bios_sensor.slope_mult;
 214                 sensor->slope_div = bios_sensor.slope_div;
 215                 sensor->offset_mult = bios_sensor.offset_num;
 216                 sensor->offset_div = bios_sensor.offset_den;
 217                 sensor->offset_constant = bios_sensor.offset_constant;
 218
 219                 temps->down_clock = bios_sensor.thrs_down_clock.temp;
 220                 temps->critical = bios_sensor.thrs_critical.temp;
 221         }
 222
 223         if (nvbios_therm_fan_parse(bios, &bios_fan)) {
 224                 pm->fan.min_duty = bios_fan.min_duty;
 225                 pm->fan.max_duty = bios_fan.max_duty;
 226                 pm->fan.pwm_freq = bios_fan.pwm_freq;
 227         }
 228
 229         nouveau_temp_safety_checks(dev);
 230         nouveau_temp_probe_i2c(dev);
 231 }
 232
 233 void
 234 nouveau_temp_fini(struct drm_device *dev)
 235 {
 236
 237 }