drm/nouveau: Add temperature support (vbios parsing, readings, hwmon)
Signed-off-by: Martin Peres <martin.peres@ensi-bourges.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
index a07f274..09b6384 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -27,6 +27,9 @@
#include "nouveau_drv.h"
#include "nouveau_pm.h"
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+
static int
nouveau_pm_clock_set(struct drm_device *dev, u8 id, u32 khz)
{
@@ -189,7 +192,7 @@
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_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;
@@ -215,7 +218,7 @@
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));
+ struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
int ret;
ret = nouveau_pm_profile_set(dev, buf);
@@ -227,43 +230,14 @@
DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
-int
-nouveau_pm_init(struct drm_device *dev)
+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;
- char info[256];
int ret, i;
- nouveau_volt_init(dev);
- nouveau_perf_init(dev);
-
- 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);
- }
-
- /* determine current ("boot") performance level */
- ret = nouveau_pm_perflvl_get(dev, &pm->boot);
- if (ret == 0) {
- pm->cur = &pm->boot;
-
- 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) {
- ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
- if (ret) {
- NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
- nouveau_perflvl, ret);
- }
- }
-
- /* initialise sysfs */
ret = device_create_file(d, &dev_attr_performance_level);
if (ret)
return ret;
@@ -290,17 +264,14 @@
return 0;
}
-void
-nouveau_pm_fini(struct drm_device *dev)
+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;
- if (pm->cur != &pm->boot)
- nouveau_pm_perflvl_set(dev, &pm->boot);
-
device_remove_file(d, &dev_attr_performance_level);
for (i = 0; i < pm->nr_perflvl; i++) {
struct nouveau_pm_level *pl = &pm->perflvl[i];
@@ -310,9 +281,221 @@
device_remove_file(d, &pl->dev_attr);
}
+}
+
+
+
+static ssize_t
+nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
+{
+ struct drm_device *dev = dev_get_drvdata(d);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", nouveau_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 (strict_strtoul(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 (strict_strtoul(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 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 const struct attribute_group hwmon_attrgroup = {
+ .attrs = hwmon_attributes,
+};
+
+static int
+nouveau_hwmon_init(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct device *hwmon_dev;
+ int ret;
+
+ dev_priv->int_hwmon_dev = NULL;
+
+ 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);
+ ret = sysfs_create_group(&hwmon_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;
+ }
+
+ dev_priv->int_hwmon_dev = hwmon_dev;
+
+ return 0;
+}
+
+static void
+nouveau_hwmon_fini(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->int_hwmon_dev) {
+ sysfs_remove_group(&dev_priv->int_hwmon_dev->kobj,
+ &hwmon_attrgroup);
+ hwmon_device_unregister(dev_priv->int_hwmon_dev);
+ }
+}
+
+
+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;
+
+ nouveau_volt_init(dev);
+ nouveau_perf_init(dev);
+ nouveau_temp_init(dev);
+
+ 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);
+ }
+
+ /* determine current ("boot") performance level */
+ ret = nouveau_pm_perflvl_get(dev, &pm->boot);
+ if (ret == 0) {
+ pm->cur = &pm->boot;
+
+ 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) {
+ ret = nouveau_pm_profile_set(dev, nouveau_perflvl);
+ if (ret) {
+ NV_ERROR(dev, "error setting perflvl \"%s\": %d\n",
+ nouveau_perflvl, ret);
+ }
+ }
+
+ nouveau_sysfs_init(dev);
+ nouveau_hwmon_init(dev);
+
+ 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;
+
+ if (pm->cur != &pm->boot)
+ nouveau_pm_perflvl_set(dev, &pm->boot);
nouveau_perf_fini(dev);
nouveau_volt_fini(dev);
+ nouveau_temp_fini(dev);
+
+ nouveau_hwmon_fini(dev);
+ nouveau_sysfs_fini(dev);
}
void