[Nouveau] [PATCH 2/2] hwmon: add power consumption

[Karol Herbst]

Signed-off-by: Karol Herbst <nouveau at karolherbst.de>
---
 drm/nouveau/include/nvif/device.h |  1 +
 drm/nouveau/nouveau_hwmon.c       | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/drm/nouveau/include/nvif/device.h b/drm/nouveau/include/nvif/device.h
index e0ed2f4..d688203 100644
--- a/drm/nouveau/include/nvif/device.h
+++ b/drm/nouveau/include/nvif/device.h
@@ -64,6 +64,7 @@ u64  nvif_device_time(struct nvif_device *);
 #define nvxx_i2c(a) nvxx_device(a)->i2c
 #define nvxx_therm(a) nvxx_device(a)->therm
 #define nvxx_volt(a) nvxx_device(a)->volt
+#define nvxx_iccsense(a) nvxx_device(a)->iccsense
 
 #include <core/device.h>
 #include <engine/fifo.h>
diff --git a/drm/nouveau/nouveau_hwmon.c b/drm/nouveau/nouveau_hwmon.c
index 8e13467..2fc5070 100644
--- a/drm/nouveau/nouveau_hwmon.c
+++ b/drm/nouveau/nouveau_hwmon.c
@@ -35,6 +35,7 @@
 #include "nouveau_hwmon.h"
 
 #include <nvkm/subdev/volt.h>
+#include <nvkm/subdev/iccsense/priv.h>
 
 #if defined(CONFIG_HWMON) || (defined(MODULE) && defined(CONFIG_HWMON_MODULE))
 static ssize_t
@@ -543,6 +544,19 @@ nouveau_hwmon_get_in0_label(struct device *d,
 static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO,
 			  nouveau_hwmon_get_in0_label, NULL, 0);
 
+static ssize_t
+nouveau_hwmon_get_power1_input(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_iccsense *iccsense = nvxx_iccsense(&drm->device);
+	return sprintf(buf, "%i\n", iccsense->driver->pwr_get(iccsense));
+}
+
+static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO,
+		nouveau_hwmon_get_power1_input, NULL, 0);
+
 static struct attribute *hwmon_default_attributes[] = {
 	&sensor_dev_attr_name.dev_attr.attr,
 	&sensor_dev_attr_update_rate.dev_attr.attr,
@@ -572,6 +586,10 @@ static struct attribute *hwmon_pwm_fan_attributes[] = {
 	&sensor_dev_attr_pwm1_max.dev_attr.attr,
 	NULL
 };
+static struct attribute *hwmon_power_attributes[] = {
+	&sensor_dev_attr_power1_input.dev_attr.attr,
+	NULL
+};
 
 static struct attribute *hwmon_in0_attributes[] = {
 	&sensor_dev_attr_in0_input.dev_attr.attr,
@@ -594,6 +612,9 @@ static const struct attribute_group hwmon_pwm_fan_attrgroup = {
 static const struct attribute_group hwmon_in0_attrgroup = {
 	.attrs = hwmon_in0_attributes,
 };
+static const struct attribute_group hwmon_power_attrgroup = {
+	.attrs = hwmon_power_attributes,
+};
 #endif
 
 int
@@ -603,6 +624,7 @@ nouveau_hwmon_init(struct drm_device *dev)
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nvkm_therm *therm = nvxx_therm(&drm->device);
 	struct nvkm_volt *volt = nvxx_volt(&drm->device);
+	struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->device);
 	struct nouveau_hwmon *hwmon;
 	struct device *hwmon_dev;
 	int ret = 0;
@@ -662,6 +684,13 @@ nouveau_hwmon_init(struct drm_device *dev)
 			goto error;
 	}
 
+	if (iccsense) {
+		ret = sysfs_create_group(&hwmon_dev->kobj,
+					&hwmon_power_attrgroup);
+		if (ret)
+			goto error;
+	}
+
 	hwmon->hwmon = hwmon_dev;
 
 	return 0;
@@ -688,6 +717,7 @@ nouveau_hwmon_fini(struct drm_device *dev)
 		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_pwm_fan_attrgroup);
 		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_fan_rpm_attrgroup);
 		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_in0_attrgroup);
+		sysfs_remove_group(&hwmon->hwmon->kobj, &hwmon_power_attrgroup);
 
 		hwmon_device_unregister(hwmon->hwmon);
 	}
-- 
2.7.1