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-rw-r--r--drivers/gpu/drm/nouveau/nouveau_bios.h2
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_drv.h6
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_pm.c234
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_temp.c16
4 files changed, 252 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.h b/drivers/gpu/drm/nouveau/nouveau_bios.h
index 8adb69e4a6b1..3f36c7074d4f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.h
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.h
@@ -58,6 +58,8 @@ struct dcb_i2c_entry {
enum dcb_gpio_tag {
DCB_GPIO_TVDAC0 = 0xc,
DCB_GPIO_TVDAC1 = 0x2d,
+ DCB_GPIO_PWM_FAN = 0x9,
+ DCB_GPIO_FAN_SENSE = 0x3d,
};
struct dcb_gpio_entry {
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 2c8ebf6248a0..432be658060d 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -521,6 +521,11 @@ struct nouveau_pm_memtimings {
int nr_timing;
};
+struct nouveau_pm_fan {
+ u32 min_duty;
+ u32 max_duty;
+};
+
struct nouveau_pm_engine {
struct nouveau_pm_voltage voltage;
struct nouveau_pm_level perflvl[NOUVEAU_PM_MAX_LEVEL];
@@ -528,6 +533,7 @@ struct nouveau_pm_engine {
struct nouveau_pm_memtimings memtimings;
struct nouveau_pm_temp_sensor_constants sensor_constants;
struct nouveau_pm_threshold_temp threshold_temp;
+ struct nouveau_pm_fan fan;
u32 pwm_divisor;
struct nouveau_pm_level boot;
diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
index ee2872ed60ee..23b297fd6f61 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -64,6 +64,10 @@ nouveau_pm_perflvl_set(struct drm_device *dev, struct nouveau_pm_level *perflvl)
if (perflvl == pm->cur)
return 0;
+ /*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 (pm->fanspeed_set && perflvl->fanspeed) {
ret = pm->fanspeed_set(dev, perflvl->fanspeed);
if (ret)
@@ -424,6 +428,176 @@ 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 nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio;
+ struct dcb_gpio_entry *gpio;
+ u32 cycles, cur, prev;
+ u64 start;
+
+ gpio = nouveau_bios_gpio_entry(dev, DCB_GPIO_FAN_SENSE);
+ if (!gpio)
+ return -ENODEV;
+
+ /* 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 = pgpio->get(dev, DCB_GPIO_FAN_SENSE);
+ cycles = 0;
+ do {
+ cur = pgpio->get(dev, DCB_GPIO_FAN_SENSE);
+ 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);
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
+ int ret = -ENODEV;
+
+ if (pm->fanspeed_get)
+ ret = pm->fanspeed_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 (strict_strtol(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;
+
+ if (pm->fanspeed_set)
+ ret = pm->fanspeed_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 (strict_strtol(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 (strict_strtol(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,
@@ -432,10 +606,26 @@ static struct attribute *hwmon_attributes[] = {
&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
@@ -445,7 +635,7 @@ 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;
struct device *hwmon_dev;
- int ret;
+ int ret = 0;
if (!pm->temp_get)
return -ENODEV;
@@ -458,17 +648,46 @@ nouveau_hwmon_init(struct drm_device *dev)
return ret;
}
dev_set_drvdata(hwmon_dev, dev);
+
+ /* default sysfs entries */
ret = sysfs_create_group(&dev->pdev->dev.kobj, &hwmon_attrgroup);
if (ret) {
- NV_ERROR(dev,
- "Unable to create hwmon sysfs file: %d\n", ret);
- hwmon_device_unregister(hwmon_dev);
- return 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 (pm->fanspeed_get && pm->fanspeed_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_bios_gpio_entry(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;
-#endif
+
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
@@ -480,6 +699,9 @@ nouveau_hwmon_fini(struct drm_device *dev)
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
diff --git a/drivers/gpu/drm/nouveau/nouveau_temp.c b/drivers/gpu/drm/nouveau/nouveau_temp.c
index 5a46446dd5a8..97c172cae3bc 100644
--- a/drivers/gpu/drm/nouveau/nouveau_temp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_temp.c
@@ -55,6 +55,10 @@ nouveau_temp_vbios_parse(struct drm_device *dev, u8 *temp)
temps->down_clock = 100;
temps->fan_boost = 90;
+ /* Set the default range for the pwm fan */
+ pm->fan.min_duty = 30;
+ pm->fan.max_duty = 100;
+
/* Set the known default values to setup the temperature sensor */
if (dev_priv->card_type >= NV_40) {
switch (dev_priv->chipset) {
@@ -156,11 +160,23 @@ nouveau_temp_vbios_parse(struct drm_device *dev, u8 *temp)
case 0x13:
sensor->slope_div = value;
break;
+ case 0x22:
+ pm->fan.min_duty = value & 0xff;
+ pm->fan.max_duty = (value & 0xff00) >> 8;
+ break;
}
temp += recordlen;
}
nouveau_temp_safety_checks(dev);
+
+ /* check the fan min/max settings */
+ if (pm->fan.min_duty < 10)
+ pm->fan.min_duty = 10;
+ if (pm->fan.max_duty > 100)
+ pm->fan.max_duty = 100;
+ if (pm->fan.max_duty < pm->fan.min_duty)
+ pm->fan.max_duty = pm->fan.min_duty;
}
static int
generated by cgit (git 2.34.1) at 2024-07-08 01:01:51 +0000