/*
* Copyright 2010 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#ifdef CONFIG_ACPI
#include <linux/acpi.h>
#endif
#include <linux/power_supply.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include "nouveau_drv.h"
#include "nouveau_hwmon.h"
#include <nvkm/subdev/iccsense.h>
#include <nvkm/subdev/volt.h>
#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
static ssize_t
nouveau_hwmon_show_temp1_auto_point1_pwm(struct device *d,
struct device_attribute *a, char *buf)
{
return sysfs_emit(buf, "%d\n", 100);
}
static SENSOR_DEVICE_ATTR(temp1_auto_point1_pwm, 0444,
nouveau_hwmon_show_temp1_auto_point1_pwm, NULL, 0);
static ssize_t
nouveau_hwmon_temp1_auto_point1_temp(struct device *d,
struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(drm);
return sysfs_emit(buf, "%d\n",
therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST) * 1000);
}
static ssize_t
nouveau_hwmon_set_temp1_auto_point1_temp(struct device *d,
struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(drm);
long value;
if (kstrtol(buf, 10, &value))
return -EINVAL;
therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST,
value / 1000);
return count;
}
static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, 0644,
nouveau_hwmon_temp1_auto_point1_temp,
nouveau_hwmon_set_temp1_auto_point1_temp, 0);
static ssize_t
nouveau_hwmon_temp1_auto_point1_temp_hyst(struct device *d,
struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(drm);
return sysfs_emit(buf, "%d\n",
therm->attr_get(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST) * 1000);
}
static ssize_t
nouveau_hwmon_set_temp1_auto_point1_temp_hyst(struct device *d,
struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(drm);
long value;
if (kstrtol(buf, 10, &value))
return -EINVAL;
therm->attr_set(therm, NVKM_THERM_ATTR_THRS_FAN_BOOST_HYST,
value / 1000);
return count;
}
static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp_hyst, 0644,
nouveau_hwmon_temp1_auto_point1_temp_hyst,
nouveau_hwmon_set_temp1_auto_point1_temp_hyst, 0);
static ssize_t
nouveau_hwmon_get_pwm1_max(struct device *d,
struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(drm);
int ret;
ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY);
if (ret < 0)
return ret;
return sprintf(buf, "%i\n", ret);
}
static ssize_t
nouveau_hwmon_get_pwm1_min(struct device *d,
struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(drm);
int ret;
ret = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY);
if (ret < 0)
return ret;
return sprintf(buf, "%i\n", ret);
}
static ssize_t
nouveau_hwmon_set_pwm1_min(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(drm);
long value;
int ret;
if (kstrtol(buf, 10, &value))
return -EINVAL;
ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MIN_DUTY, value);
if (ret < 0)
return ret;
return count;
}
static SENSOR_DEVICE_ATTR(pwm1_min, 0644,
nouveau_hwmon_get_pwm1_min,
nouveau_hwmon_set_pwm1_min, 0);
static ssize_t
nouveau_hwmon_set_pwm1_max(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_therm *therm = nvxx_therm(drm);
long value;
int ret;
if (kstrtol(buf, 10, &value))
return -EINVAL;
ret = therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MAX_DUTY, value);
if (ret < 0)
return ret;
return count;
}
static SENSOR_DEVICE_ATTR(pwm1_max, 0644,
nouveau_hwmon_get_pwm1_max,
nouveau_hwmon_set_pwm1_max, 0);
static struct attribute *pwm_fan_sensor_attrs[] = {
&sensor_dev_attr_pwm1_min.dev_attr.attr,
&sensor_dev_attr_pwm1_max.dev_attr.attr,
NULL
};
static const struct attribute_group pwm_fan_sensor_group = {
.attrs = pwm_fan_sensor_attrs,
};
static struct attribute *temp1_auto_point_sensor_attrs[] = {
&sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
&sensor_dev_attr_temp1_auto_point1_temp_hyst.dev_attr.attr,
NULL
};
static const struct attribute_group temp1_auto_point_sensor_group = {
.attrs = temp1_auto_point_sensor_attrs,
};
#define N_ATTR_GROUPS 3
static const struct hwmon_channel_info * const nouveau_info[] = {
HWMON_CHANNEL_INFO(chip,
HWMON_C_UPDATE_INTERVAL),
HWMON_CHANNEL_INFO(temp,
HWMON_T_INPUT |
HWMON_T_MAX | HWMON_T_MAX_HYST |
HWMON_T_CRIT | HWMON_T_CRIT_HYST |
HWMON_T_EMERGENCY | HWMON_T_EMERGENCY_HYST),
HWMON_CHANNEL_INFO(fan,
HWMON_F_INPUT),
HWMON_CHANNEL_INFO(in,
HWMON_I_INPUT |
HWMON_I_MIN | HWMON_I_MAX |
HWMON_I_LABEL),
HWMON_CHANNEL_INFO(pwm,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE),
HWMON_CHANNEL_INFO(power,
HWMON_P_INPUT | HWMON_P_CAP_MAX | HWMON_P_CRIT),
NULL
};
static umode_t
nouveau_chip_is_visible(const void *data, u32 attr, int channel)
{
switch (attr) {
case hwmon_chip_update_interval:
return 0444;
default:
return 0;
}
}
static umode_t
nouveau_power_is_visible(const void *data, u32 attr, int channel)
{
struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
struct nvkm_iccsense *iccsense = nvxx_iccsense(drm);
if (!iccsense || !iccsense->data_valid || list_empty(&iccsense->rails))
return 0;
switch (attr) {
case hwmon_power_input:
return 0444;
case hwmon_power_max:
if (iccsense->power_w_max)
return 0444;
return 0;
case hwmon_power_crit:
if (iccsense->power_w_crit)
return 0444;
return 0;
default:
return 0;
}
}
static umode_t
nouveau_temp_is_visible(const void *data, u32 attr, int channel)
{
struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
struct nvkm_therm *therm = nvxx_therm(drm);
if (!therm || !therm->attr_get || nvkm_therm_temp_get(therm) < 0)
return 0;
switch (attr) {
case hwmon_temp_input:
return 0444;
case hwmon_temp_max:
case hwmon_temp_max_hyst:
case hwmon_temp_crit:
case hwmon_temp_crit_hyst:
case hwmon_temp_emergency:
case hwmon_temp_emergency_hyst:
return 0644;
default:
return 0;
}
}
static umode_t
nouveau_pwm_is_visible(const void *data, u32 attr, int channel)
{
struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
struct nvkm_therm *therm = nvxx_therm(drm);
if (!therm || !therm->attr_get || !therm->fan_get ||
therm->fan_get(therm) < 0)
return 0;
switch (attr) {
case hwmon_pwm_enable:
case hwmon_pwm_input:
return 0644;
default:
return 0;
}
}
static umode_t
nouveau_input_is_visible(const void *data, u32 attr, int channel)
{
struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
struct nvkm_volt *volt = nvxx_volt(drm);
if (!volt || nvkm_volt_get(volt) < 0)
return 0;
switch (attr) {
case hwmon_in_input:
case hwmon_in_label:
case hwmon_in_min:
case hwmon_in_max:
return 0444;
default:
return 0;
}
}
static umode_t
nouveau_fan_is_visible(const void *data, u32 attr, int channel)
{
struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data);
struct nvkm_therm *therm = nvxx_therm(drm);
if (!therm || !therm->attr_get || nvkm_therm_fan_sense(therm) < 0)
return 0;
switch (attr) {
case hwmon_fan_input:
return 0444;
default:
return 0;
}
}
static int
nouveau_chip_read(struct device *dev, u32 attr, int channel, long *val)
{
switch (attr) {
case hwmon_chip_update_interval:
*val = 1000;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int
nouveau_temp_read(struct device *dev, u32 attr, int channel, long *val)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct nouveau_drm *drm = nouveau_drm(drm_dev);
struct nvkm_therm *therm = nvxx_therm(drm);
int ret;
if (!therm || !therm->attr_get)
return -EOPNOTSUPP;
switch (attr) {
case hwmon_temp_input:
if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
return -EINVAL;
ret = nvkm_therm_temp_get(therm);
*val = ret < 0 ? ret : (ret * 1000);
break;
case hwmon_temp_max:
*val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK)
* 1000;
break;
case hwmon_temp_max_hyst:
*val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST)
* 1000;
break;
case hwmon_temp_crit:
*val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL)
* 1000;
break;
case hwmon_temp_crit_hyst:
*val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST)
* 1000;
break;
case hwmon_temp_emergency:
*val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN)
* 1000;
break;
case hwmon_temp_emergency_hyst:
*val = therm->attr_get(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST)
* 1000;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int
nouveau_fan_read(struct device *dev, u32 attr, int channel, long *val)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct nouveau_drm *drm = nouveau_drm(drm_dev);
struct nvkm_therm *therm = nvxx_therm(drm);
if (!therm)
return -EOPNOTSUPP;
switch (attr) {
case hwmon_fan_input:
if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
return -EINVAL;
*val = nvkm_therm_fan_sense(therm);
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int
nouveau_in_read(struct device *dev, u32 attr, int channel, long *val)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct nouveau_drm *drm = nouveau_drm(drm_dev);
struct nvkm_volt *volt = nvxx_volt(drm);
int ret;
if (!volt)
return -EOPNOTSUPP;
switch (attr) {
case hwmon_in_input:
if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
return -EINVAL;
ret = nvkm_volt_get(volt);
*val = ret < 0 ? ret : (ret / 1000);
break;
case hwmon_in_min:
*val = volt->min_uv > 0 ? (volt->min_uv / 1000) : -ENODEV;
break;
case hwmon_in_max:
*val = volt->max_uv > 0 ? (volt->max_uv / 1000) : -ENODEV;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int
nouveau_pwm_read(struct device *dev, u32 attr, int channel, long *val)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct nouveau_drm *drm = nouveau_drm(drm_dev);
struct nvkm_therm *therm = nvxx_therm(drm);
if (!therm || !therm->attr_get || !therm->fan_get)
return -EOPNOTSUPP;
switch (attr) {
case hwmon_pwm_enable:
*val = therm->attr_get(therm, NVKM_THERM_ATTR_FAN_MODE);
break;
case hwmon_pwm_input:
if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
return -EINVAL;
*val = therm->fan_get(therm);
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int
nouveau_power_read(struct device *dev, u32 attr, int channel, long *val)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct nouveau_drm *drm = nouveau_drm(drm_dev);
struct nvkm_iccsense *iccsense = nvxx_iccsense(drm);
if (!iccsense)
return -EOPNOTSUPP;
switch (attr) {
case hwmon_power_input:
if (drm_dev->switch_power_state != DRM_SWITCH_POWER_ON)
return -EINVAL;
*val = nvkm_iccsense_read_all(iccsense);
break;
case hwmon_power_max:
*val = iccsense->power_w_max;
break;
case hwmon_power_crit:
*val = iccsense->power_w_crit;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int
nouveau_temp_write(struct device *dev, u32 attr, int channel, long val)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct nouveau_drm *drm = nouveau_drm(drm_dev);
struct nvkm_therm *therm = nvxx_therm(drm);
if (!therm || !therm->attr_set)
return -EOPNOTSUPP;
switch (attr) {
case hwmon_temp_max:
return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK,
val / 1000);
case hwmon_temp_max_hyst:
return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_DOWN_CLK_HYST,
val / 1000);
case hwmon_temp_crit:
return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL,
val / 1000);
case hwmon_temp_crit_hyst:
return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_CRITICAL_HYST,
val / 1000);
case hwmon_temp_emergency:
return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN,
val / 1000);
case hwmon_temp_emergency_hyst:
return therm->attr_set(therm, NVKM_THERM_ATTR_THRS_SHUTDOWN_HYST,
val / 1000);
default:
return -EOPNOTSUPP;
}
}
static int
nouveau_pwm_write(struct device *dev, u32 attr, int channel, long val)
{
struct drm_device *drm_dev = dev_get_drvdata(dev);
struct nouveau_drm *drm = nouveau_drm(drm_dev);
struct nvkm_therm *therm = nvxx_therm(drm);
if (!therm || !therm->attr_set)
return -EOPNOTSUPP;
switch (attr) {
case hwmon_pwm_input:
return therm->fan_set(therm, val);
case hwmon_pwm_enable:
return therm->attr_set(therm, NVKM_THERM_ATTR_FAN_MODE, val);
default:
return -EOPNOTSUPP;
}
}
static umode_t
nouveau_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,
int channel)
{
switch (type) {
case hwmon_chip:
return nouveau_chip_is_visible(data, attr, channel);
case hwmon_temp:
return nouveau_temp_is_visible(data, attr, channel);
case hwmon_fan:
return nouveau_fan_is_visible(data, attr, channel);
case hwmon_in:
return nouveau_input_is_visible(data, attr, channel);
case hwmon_pwm:
return nouveau_pwm_is_visible(data, attr, channel);
case hwmon_power:
return nouveau_power_is_visible(data, attr, channel);
default:
return 0;
}
}
static const char input_label[] = "GPU core";
static int
nouveau_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr,
int channel, const char **buf)
{
if (type == hwmon_in && attr == hwmon_in_label) {
*buf = input_label;
return 0;
}
return -EOPNOTSUPP;
}
static int
nouveau_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
int channel, long *val)
{
switch (type) {
case hwmon_chip:
return nouveau_chip_read(dev, attr, channel, val);
case hwmon_temp:
return nouveau_temp_read(dev, attr, channel, val);
case hwmon_fan:
return nouveau_fan_read(dev, attr, channel, val);
case hwmon_in:
return nouveau_in_read(dev, attr, channel, val);
case hwmon_pwm:
return nouveau_pwm_read(dev, attr, channel, val);
case hwmon_power:
return nouveau_power_read(dev, attr, channel, val);
default:
return -EOPNOTSUPP;
}
}
static int
nouveau_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,
int channel, long val)
{
switch (type) {
case hwmon_temp:
return nouveau_temp_write(dev, attr, channel, val);
case hwmon_pwm:
return nouveau_pwm_write(dev, attr, channel, val);
default:
return -EOPNOTSUPP;
}
}
static const struct hwmon_ops nouveau_hwmon_ops = {
.is_visible = nouveau_is_visible,
.read = nouveau_read,
.read_string = nouveau_read_string,
.write = nouveau_write,
};
static const struct hwmon_chip_info nouveau_chip_info = {
.ops = &nouveau_hwmon_ops,
.info = nouveau_info,
};
#endif
int
nouveau_hwmon_init(struct drm_device *dev)
{
#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
struct nouveau_drm *drm = nouveau_drm(dev);
struct nvkm_iccsense *iccsense = nvxx_iccsense(drm);
struct nvkm_therm *therm = nvxx_therm(drm);
struct nvkm_volt *volt = nvxx_volt(drm);
const struct attribute_group *special_groups[N_ATTR_GROUPS];
struct nouveau_hwmon *hwmon;
struct device *hwmon_dev;
int ret = 0;
int i = 0;
if (!iccsense && !therm && !volt) {
NV_DEBUG(drm, "Skipping hwmon registration\n");
return 0;
}
hwmon = drm->hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL);
if (!hwmon)
return -ENOMEM;
hwmon->dev = dev;
if (therm && therm->attr_get && therm->attr_set) {
if (nvkm_therm_temp_get(therm) >= 0)
special_groups[i++] = &temp1_auto_point_sensor_group;
if (therm->fan_get && therm->fan_get(therm) >= 0)
special_groups[i++] = &pwm_fan_sensor_group;
}
special_groups[i] = NULL;
hwmon_dev = hwmon_device_register_with_info(dev->dev, "nouveau", dev,
&nouveau_chip_info,
special_groups);
if (IS_ERR(hwmon_dev)) {
ret = PTR_ERR(hwmon_dev);
NV_ERROR(drm, "Unable to register hwmon device: %d\n", ret);
return ret;
}
hwmon->hwmon = hwmon_dev;
return 0;
#else
return 0;
#endif
}
void
nouveau_hwmon_fini(struct drm_device *dev)
{
#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
struct nouveau_hwmon *hwmon = nouveau_hwmon(dev);
if (!hwmon)
return;
if (hwmon->hwmon)
hwmon_device_unregister(hwmon->hwmon);
nouveau_drm(dev)->hwmon = NULL;
kfree(hwmon);
#endif
}
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