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OpenCloudOS-Kernel/drivers/gpu/drm/nouveau/nouveau_pm.c

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/*
* 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
*/
#include "drmP.h"
#include "nouveau_drv.h"
#include "nouveau_pm.h"
#include "nouveau_gpio.h"
#ifdef CONFIG_ACPI
#include <linux/acpi.h>
#endif
#include <linux/power_supply.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
static int
nouveau_pwmfan_get(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct gpio_func gpio;
u32 divs, duty;
int ret;
if (!pm->pwm_get)
return -ENODEV;
ret = nouveau_gpio_find(dev, 0, DCB_GPIO_PWM_FAN, 0xff, &gpio);
if (ret == 0) {
ret = pm->pwm_get(dev, gpio.line, &divs, &duty);
if (ret == 0 && divs) {
divs = max(divs, duty);
if (dev_priv->card_type <= NV_40 || (gpio.log[0] & 1))
duty = divs - duty;
return (duty * 100) / divs;
}
return nouveau_gpio_func_get(dev, gpio.func) * 100;
}
return -ENODEV;
}
static int
nouveau_pwmfan_set(struct drm_device *dev, int percent)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct gpio_func gpio;
u32 divs, duty;
int ret;
if (!pm->pwm_set)
return -ENODEV;
ret = nouveau_gpio_find(dev, 0, DCB_GPIO_PWM_FAN, 0xff, &gpio);
if (ret == 0) {
divs = pm->fan.pwm_divisor;
if (pm->fan.pwm_freq) {
/*XXX: PNVIO clock more than likely... */
divs = 135000 / pm->fan.pwm_freq;
if (dev_priv->chipset < 0xa3)
divs /= 4;
}
duty = ((divs * percent) + 99) / 100;
if (dev_priv->card_type <= NV_40 || (gpio.log[0] & 1))
duty = divs - duty;
ret = pm->pwm_set(dev, gpio.line, divs, duty);
if (!ret)
pm->fan.percent = percent;
return ret;
}
return -ENODEV;
}
static int
nouveau_pm_perflvl_aux(struct drm_device *dev, struct nouveau_pm_level *perflvl,
struct nouveau_pm_level *a, struct nouveau_pm_level *b)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
int ret;
/*XXX: not on all boards, we should control based on temperature
* on recent boards.. or maybe on some other factor we don't
* know about?
*/
if (a->fanspeed && b->fanspeed && b->fanspeed > a->fanspeed) {
ret = nouveau_pwmfan_set(dev, perflvl->fanspeed);
if (ret && ret != -ENODEV) {
NV_ERROR(dev, "fanspeed set failed: %d\n", ret);
return ret;
}
}
if (pm->voltage.supported && pm->voltage_set) {
if (perflvl->volt_min && b->volt_min > a->volt_min) {
ret = pm->voltage_set(dev, perflvl->volt_min);
if (ret) {
NV_ERROR(dev, "voltage set failed: %d\n", ret);
return ret;
}
}
}
return 0;
}
static int
nouveau_pm_perflvl_set(struct drm_device *dev, struct nouveau_pm_level *perflvl)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
void *state;
int ret;
if (perflvl == pm->cur)
return 0;
ret = nouveau_pm_perflvl_aux(dev, perflvl, pm->cur, perflvl);
if (ret)
return ret;
state = pm->clocks_pre(dev, perflvl);
if (IS_ERR(state)) {
ret = PTR_ERR(state);
goto error;
}
ret = pm->clocks_set(dev, state);
if (ret)
goto error;
ret = nouveau_pm_perflvl_aux(dev, perflvl, perflvl, pm->cur);
if (ret)
return ret;
pm->cur = perflvl;
return 0;
error:
/* restore the fan speed and voltage before leaving */
nouveau_pm_perflvl_aux(dev, perflvl, perflvl, pm->cur);
return ret;
}
void
nouveau_pm_trigger(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_profile *profile = NULL;
struct nouveau_pm_level *perflvl = NULL;
int ret;
/* select power profile based on current power source */
if (power_supply_is_system_supplied())
profile = pm->profile_ac;
else
profile = pm->profile_dc;
if (profile != pm->profile) {
pm->profile->func->fini(pm->profile);
pm->profile = profile;
pm->profile->func->init(pm->profile);
}
/* select performance level based on profile */
perflvl = profile->func->select(profile);
/* change perflvl, if necessary */
if (perflvl != pm->cur) {
struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;
u64 time0 = ptimer->read(dev);
NV_INFO(dev, "setting performance level: %d", perflvl->id);
ret = nouveau_pm_perflvl_set(dev, perflvl);
if (ret)
NV_INFO(dev, "> reclocking failed: %d\n\n", ret);
NV_INFO(dev, "> reclocking took %lluns\n\n",
ptimer->read(dev) - time0);
}
}
static struct nouveau_pm_profile *
profile_find(struct drm_device *dev, const char *string)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_profile *profile;
list_for_each_entry(profile, &pm->profiles, head) {
if (!strncmp(profile->name, string, sizeof(profile->name)))
return profile;
}
return NULL;
}
static int
nouveau_pm_profile_set(struct drm_device *dev, const char *profile)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_profile *ac = NULL, *dc = NULL;
char string[16], *cur = string, *ptr;
/* safety precaution, for now */
if (nouveau_perflvl_wr != 7777)
return -EPERM;
strncpy(string, profile, sizeof(string));
string[sizeof(string) - 1] = 0;
if ((ptr = strchr(string, '\n')))
*ptr = '\0';
ptr = strsep(&cur, ",");
if (ptr)
ac = profile_find(dev, ptr);
ptr = strsep(&cur, ",");
if (ptr)
dc = profile_find(dev, ptr);
else
dc = ac;
if (ac == NULL || dc == NULL)
return -EINVAL;
pm->profile_ac = ac;
pm->profile_dc = dc;
nouveau_pm_trigger(dev);
return 0;
}
static void
nouveau_pm_static_dummy(struct nouveau_pm_profile *profile)
{
}
static struct nouveau_pm_level *
nouveau_pm_static_select(struct nouveau_pm_profile *profile)
{
return container_of(profile, struct nouveau_pm_level, profile);
}
const struct nouveau_pm_profile_func nouveau_pm_static_profile_func = {
.destroy = nouveau_pm_static_dummy,
.init = nouveau_pm_static_dummy,
.fini = nouveau_pm_static_dummy,
.select = nouveau_pm_static_select,
};
static int
nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
int ret;
memset(perflvl, 0, sizeof(*perflvl));
if (pm->clocks_get) {
ret = pm->clocks_get(dev, perflvl);
if (ret)
return ret;
}
if (pm->voltage.supported && pm->voltage_get) {
ret = pm->voltage_get(dev);
if (ret > 0) {
perflvl->volt_min = ret;
perflvl->volt_max = ret;
}
}
ret = nouveau_pwmfan_get(dev);
if (ret > 0)
perflvl->fanspeed = ret;
nouveau_mem_timing_read(dev, &perflvl->timing);
return 0;
}
static void
nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
{
char c[16], s[16], v[32], f[16], m[16];
c[0] = '\0';
if (perflvl->core)
snprintf(c, sizeof(c), " core %dMHz", perflvl->core / 1000);
s[0] = '\0';
if (perflvl->shader)
snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
m[0] = '\0';
if (perflvl->memory)
snprintf(m, sizeof(m), " memory %dMHz", perflvl->memory / 1000);
v[0] = '\0';
if (perflvl->volt_min && perflvl->volt_min != perflvl->volt_max) {
snprintf(v, sizeof(v), " voltage %dmV-%dmV",
perflvl->volt_min / 1000, perflvl->volt_max / 1000);
} else
if (perflvl->volt_min) {
snprintf(v, sizeof(v), " voltage %dmV",
perflvl->volt_min / 1000);
}
f[0] = '\0';
if (perflvl->fanspeed)
snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
snprintf(ptr, len, "%s%s%s%s%s\n", c, s, m, v, f);
}
static ssize_t
nouveau_pm_get_perflvl_info(struct device *d,
struct device_attribute *a, char *buf)
{
struct nouveau_pm_level *perflvl =
container_of(a, struct nouveau_pm_level, dev_attr);
char *ptr = buf;
int len = PAGE_SIZE;
snprintf(ptr, len, "%d:", perflvl->id);
ptr += strlen(buf);
len -= strlen(buf);
nouveau_pm_perflvl_info(perflvl, ptr, len);
return strlen(buf);
}
static ssize_t
nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
{
struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_level cur;
int len = PAGE_SIZE, ret;
char *ptr = buf;
snprintf(ptr, len, "profile: %s, %s\nc:",
pm->profile_ac->name, pm->profile_dc->name);
ptr += strlen(buf);
len -= strlen(buf);
ret = nouveau_pm_perflvl_get(dev, &cur);
if (ret == 0)
nouveau_pm_perflvl_info(&cur, ptr, len);
return strlen(buf);
}
static ssize_t
nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
int ret;
ret = nouveau_pm_profile_set(dev, buf);
if (ret)
return ret;
return strlen(buf);
}
static DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
static int
nouveau_sysfs_init(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct device *d = &dev->pdev->dev;
int ret, i;
ret = device_create_file(d, &dev_attr_performance_level);
if (ret)
return ret;
for (i = 0; i < pm->nr_perflvl; i++) {
struct nouveau_pm_level *perflvl = &pm->perflvl[i];
perflvl->dev_attr.attr.name = perflvl->name;
perflvl->dev_attr.attr.mode = S_IRUGO;
perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
perflvl->dev_attr.store = NULL;
sysfs_attr_init(&perflvl->dev_attr.attr);
ret = device_create_file(d, &perflvl->dev_attr);
if (ret) {
NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
perflvl->id, i);
perflvl->dev_attr.attr.name = NULL;
nouveau_pm_fini(dev);
return ret;
}
}
return 0;
}
static void
nouveau_sysfs_fini(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct device *d = &dev->pdev->dev;
int i;
device_remove_file(d, &dev_attr_performance_level);
for (i = 0; i < pm->nr_perflvl; i++) {
struct nouveau_pm_level *pl = &pm->perflvl[i];
if (!pl->dev_attr.attr.name)
break;
device_remove_file(d, &pl->dev_attr);
}
}
#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
static ssize_t
nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
return snprintf(buf, PAGE_SIZE, "%d\n", pm->temp_get(dev)*1000);
}
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
NULL, 0);
static ssize_t
nouveau_hwmon_max_temp(struct device *d, struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
return snprintf(buf, PAGE_SIZE, "%d\n", temp->down_clock*1000);
}
static ssize_t
nouveau_hwmon_set_max_temp(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
long value;
if (kstrtol(buf, 10, &value) == -EINVAL)
return count;
temp->down_clock = value/1000;
nouveau_temp_safety_checks(dev);
return count;
}
static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_max_temp,
nouveau_hwmon_set_max_temp,
0);
static ssize_t
nouveau_hwmon_critical_temp(struct device *d, struct device_attribute *a,
char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
return snprintf(buf, PAGE_SIZE, "%d\n", temp->critical*1000);
}
static ssize_t
nouveau_hwmon_set_critical_temp(struct device *d, struct device_attribute *a,
const char *buf,
size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_threshold_temp *temp = &pm->threshold_temp;
long value;
if (kstrtol(buf, 10, &value) == -EINVAL)
return count;
temp->critical = value/1000;
nouveau_temp_safety_checks(dev);
return count;
}
static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO | S_IWUSR,
nouveau_hwmon_critical_temp,
nouveau_hwmon_set_critical_temp,
0);
static ssize_t nouveau_hwmon_show_name(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "nouveau\n");
}
static SENSOR_DEVICE_ATTR(name, S_IRUGO, nouveau_hwmon_show_name, NULL, 0);
static ssize_t nouveau_hwmon_show_update_rate(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return sprintf(buf, "1000\n");
}
static SENSOR_DEVICE_ATTR(update_rate, S_IRUGO,
nouveau_hwmon_show_update_rate,
NULL, 0);
static ssize_t
nouveau_hwmon_show_fan0_input(struct device *d, struct device_attribute *attr,
char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;
struct gpio_func gpio;
u32 cycles, cur, prev;
u64 start;
int ret;
ret = nouveau_gpio_find(dev, 0, DCB_GPIO_FAN_SENSE, 0xff, &gpio);
if (ret)
return ret;
/* Monitor the GPIO input 0x3b for 250ms.
* When the fan spins, it changes the value of GPIO FAN_SENSE.
* We get 4 changes (0 -> 1 -> 0 -> 1 -> [...]) per complete rotation.
*/
start = ptimer->read(dev);
prev = nouveau_gpio_sense(dev, 0, gpio.line);
cycles = 0;
do {
cur = nouveau_gpio_sense(dev, 0, gpio.line);
if (prev != cur) {
cycles++;
prev = cur;
}
usleep_range(500, 1000); /* supports 0 < rpm < 7500 */
} while (ptimer->read(dev) - start < 250000000);
/* interpolate to get rpm */
return sprintf(buf, "%i\n", cycles / 4 * 4 * 60);
}
static SENSOR_DEVICE_ATTR(fan0_input, S_IRUGO, nouveau_hwmon_show_fan0_input,
NULL, 0);
static ssize_t
nouveau_hwmon_get_pwm0(struct device *d, struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
int ret;
ret = nouveau_pwmfan_get(dev);
if (ret < 0)
return ret;
return sprintf(buf, "%i\n", ret);
}
static ssize_t
nouveau_hwmon_set_pwm0(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
int ret = -ENODEV;
long value;
if (nouveau_perflvl_wr != 7777)
return -EPERM;
if (kstrtol(buf, 10, &value) == -EINVAL)
return -EINVAL;
if (value < pm->fan.min_duty)
value = pm->fan.min_duty;
if (value > pm->fan.max_duty)
value = pm->fan.max_duty;
ret = nouveau_pwmfan_set(dev, value);
if (ret)
return ret;
return count;
}
static SENSOR_DEVICE_ATTR(pwm0, S_IRUGO | S_IWUSR,
nouveau_hwmon_get_pwm0,
nouveau_hwmon_set_pwm0, 0);
static ssize_t
nouveau_hwmon_get_pwm0_min(struct device *d,
struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
return sprintf(buf, "%i\n", pm->fan.min_duty);
}
static ssize_t
nouveau_hwmon_set_pwm0_min(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
long value;
if (kstrtol(buf, 10, &value) == -EINVAL)
return -EINVAL;
if (value < 0)
value = 0;
if (pm->fan.max_duty - value < 10)
value = pm->fan.max_duty - 10;
if (value < 10)
pm->fan.min_duty = 10;
else
pm->fan.min_duty = value;
return count;
}
static SENSOR_DEVICE_ATTR(pwm0_min, S_IRUGO | S_IWUSR,
nouveau_hwmon_get_pwm0_min,
nouveau_hwmon_set_pwm0_min, 0);
static ssize_t
nouveau_hwmon_get_pwm0_max(struct device *d,
struct device_attribute *a, char *buf)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
return sprintf(buf, "%i\n", pm->fan.max_duty);
}
static ssize_t
nouveau_hwmon_set_pwm0_max(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct drm_device *dev = dev_get_drvdata(d);
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
long value;
if (kstrtol(buf, 10, &value) == -EINVAL)
return -EINVAL;
if (value < 0)
value = 0;
if (value - pm->fan.min_duty < 10)
value = pm->fan.min_duty + 10;
if (value > 100)
pm->fan.max_duty = 100;
else
pm->fan.max_duty = value;
return count;
}
static SENSOR_DEVICE_ATTR(pwm0_max, S_IRUGO | S_IWUSR,
nouveau_hwmon_get_pwm0_max,
nouveau_hwmon_set_pwm0_max, 0);
static struct attribute *hwmon_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_crit.dev_attr.attr,
&sensor_dev_attr_name.dev_attr.attr,
&sensor_dev_attr_update_rate.dev_attr.attr,
NULL
};
static struct attribute *hwmon_fan_rpm_attributes[] = {
&sensor_dev_attr_fan0_input.dev_attr.attr,
NULL
};
static struct attribute *hwmon_pwm_fan_attributes[] = {
&sensor_dev_attr_pwm0.dev_attr.attr,
&sensor_dev_attr_pwm0_min.dev_attr.attr,
&sensor_dev_attr_pwm0_max.dev_attr.attr,
NULL
};
static const struct attribute_group hwmon_attrgroup = {
.attrs = hwmon_attributes,
};
static const struct attribute_group hwmon_fan_rpm_attrgroup = {
.attrs = hwmon_fan_rpm_attributes,
};
static const struct attribute_group hwmon_pwm_fan_attrgroup = {
.attrs = hwmon_pwm_fan_attributes,
};
#endif
static int
nouveau_hwmon_init(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
struct device *hwmon_dev;
int ret = 0;
if (!pm->temp_get)
return -ENODEV;
hwmon_dev = hwmon_device_register(&dev->pdev->dev);
if (IS_ERR(hwmon_dev)) {
ret = PTR_ERR(hwmon_dev);
NV_ERROR(dev,
"Unable to register hwmon device: %d\n", ret);
return ret;
}
dev_set_drvdata(hwmon_dev, dev);
/* default sysfs entries */
ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
if (ret) {
if (ret)
goto error;
}
/* if the card has a pwm fan */
/*XXX: incorrect, need better detection for this, some boards have
* the gpio entries for pwm fan control even when there's no
* actual fan connected to it... therm table? */
if (nouveau_pwmfan_get(dev) >= 0) {
ret = sysfs_create_group(&dev->pdev->dev.kobj,
&hwmon_pwm_fan_attrgroup);
if (ret)
goto error;
}
/* if the card can read the fan rpm */
if (nouveau_gpio_func_valid(dev, DCB_GPIO_FAN_SENSE)) {
ret = sysfs_create_group(&dev->pdev->dev.kobj,
&hwmon_fan_rpm_attrgroup);
if (ret)
goto error;
}
pm->hwmon = hwmon_dev;
return 0;
error:
NV_ERROR(dev, "Unable to create some hwmon sysfs files: %d\n", ret);
hwmon_device_unregister(hwmon_dev);
pm->hwmon = NULL;
return ret;
#else
pm->hwmon = NULL;
return 0;
#endif
}
static void
nouveau_hwmon_fini(struct drm_device *dev)
{
#if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
if (pm->hwmon) {
sysfs_remove_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
sysfs_remove_group(&dev->pdev->dev.kobj,
&hwmon_pwm_fan_attrgroup);
sysfs_remove_group(&dev->pdev->dev.kobj,
&hwmon_fan_rpm_attrgroup);
hwmon_device_unregister(pm->hwmon);
}
#endif
}
#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
static int
nouveau_pm_acpi_event(struct notifier_block *nb, unsigned long val, void *data)
{
struct drm_nouveau_private *dev_priv =
container_of(nb, struct drm_nouveau_private, engine.pm.acpi_nb);
struct drm_device *dev = dev_priv->dev;
struct acpi_bus_event *entry = (struct acpi_bus_event *)data;
if (strcmp(entry->device_class, "ac_adapter") == 0) {
bool ac = power_supply_is_system_supplied();
NV_DEBUG(dev, "power supply changed: %s\n", ac ? "AC" : "DC");
nouveau_pm_trigger(dev);
}
return NOTIFY_OK;
}
#endif
int
nouveau_pm_init(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
char info[256];
int ret, i;
/* parse aux tables from vbios */
nouveau_volt_init(dev);
nouveau_temp_init(dev);
/* determine current ("boot") performance level */
ret = nouveau_pm_perflvl_get(dev, &pm->boot);
if (ret) {
NV_ERROR(dev, "failed to determine boot perflvl\n");
return ret;
}
strncpy(pm->boot.name, "boot", 4);
strncpy(pm->boot.profile.name, "boot", 4);
pm->boot.profile.func = &nouveau_pm_static_profile_func;
INIT_LIST_HEAD(&pm->profiles);
list_add(&pm->boot.profile.head, &pm->profiles);
pm->profile_ac = &pm->boot.profile;
pm->profile_dc = &pm->boot.profile;
pm->profile = &pm->boot.profile;
pm->cur = &pm->boot;
/* add performance levels from vbios */
nouveau_perf_init(dev);
/* display available performance levels */
NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
for (i = 0; i < pm->nr_perflvl; i++) {
nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
NV_INFO(dev, "%d:%s", pm->perflvl[i].id, info);
}
nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
NV_INFO(dev, "c:%s", info);
/* switch performance levels now if requested */
if (nouveau_perflvl != NULL)
nouveau_pm_profile_set(dev, nouveau_perflvl);
/* determine the current fan speed */
pm->fan.percent = nouveau_pwmfan_get(dev);
nouveau_sysfs_init(dev);
nouveau_hwmon_init(dev);
#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
pm->acpi_nb.notifier_call = nouveau_pm_acpi_event;
register_acpi_notifier(&pm->acpi_nb);
#endif
return 0;
}
void
nouveau_pm_fini(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_profile *profile, *tmp;
list_for_each_entry_safe(profile, tmp, &pm->profiles, head) {
list_del(&profile->head);
profile->func->destroy(profile);
}
if (pm->cur != &pm->boot)
nouveau_pm_perflvl_set(dev, &pm->boot);
nouveau_temp_fini(dev);
nouveau_perf_fini(dev);
nouveau_volt_fini(dev);
#if defined(CONFIG_ACPI) && defined(CONFIG_POWER_SUPPLY)
unregister_acpi_notifier(&pm->acpi_nb);
#endif
nouveau_hwmon_fini(dev);
nouveau_sysfs_fini(dev);
}
void
nouveau_pm_resume(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
struct nouveau_pm_level *perflvl;
if (!pm->cur || pm->cur == &pm->boot)
return;
perflvl = pm->cur;
pm->cur = &pm->boot;
nouveau_pm_perflvl_set(dev, perflvl);
nouveau_pwmfan_set(dev, pm->fan.percent);
}
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