Contact: linux-acpi@vger.kernel.org
Description:
(RO) Display the platform power source
- 0x00 = DC
- 0x01 = AC
- 0x02 = USB
- 0x03 = Wireless Charger
+ bits[3:0] Current power source
+ 0x00 = DC
+ 0x01 = AC
+ 0x02 = USB
+ 0x03 = Wireless Charger
+ bits[7:4] Power source sequence number
What: /sys/bus/platform/devices/INT3407:00/dptf_power/battery_steady_power
Date: Jul, 2016
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The maximum sustained power for battery in milliwatts.
+
+What: /sys/bus/platform/devices/INT3407:00/dptf_power/rest_of_platform_power_mw
+Date: June, 2020
+KernelVersion: v5.8
+Contact: linux-acpi@vger.kernel.org
+Description:
+ (RO) Shows the rest (outside of SoC) of worst-case platform power.
+
+What: /sys/bus/platform/devices/INT3407:00/dptf_power/prochot_confirm
+Date: June, 2020
+KernelVersion: v5.8
+Contact: linux-acpi@vger.kernel.org
+Description:
+ (WO) Confirm embedded controller about a prochot notification.
* ARTG : Adapter rating
* CTYP : Charger type
* PBSS : Battery steady power
+ * PROP : Rest of worst case platform Power
*/
#define DPTF_POWER_SHOW(name, object) \
static ssize_t name##_show(struct device *dev,\
DPTF_POWER_SHOW(adapter_rating_mw, ARTG)
DPTF_POWER_SHOW(battery_steady_power_mw, PBSS)
DPTF_POWER_SHOW(charger_type, CTYP)
+DPTF_POWER_SHOW(rest_of_platform_power_mw, PROP)
static DEVICE_ATTR_RO(max_platform_power_mw);
static DEVICE_ATTR_RO(platform_power_source);
static DEVICE_ATTR_RO(adapter_rating_mw);
static DEVICE_ATTR_RO(battery_steady_power_mw);
static DEVICE_ATTR_RO(charger_type);
+static DEVICE_ATTR_RO(rest_of_platform_power_mw);
+
+static ssize_t prochot_confirm_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct acpi_device *acpi_dev = dev_get_drvdata(dev);
+ acpi_status status;
+ int seq_no;
+
+ if (kstrtouint(buf, 0, &seq_no) < 0)
+ return -EINVAL;
+
+ status = acpi_execute_simple_method(acpi_dev->handle, "PBOK", seq_no);
+ if (ACPI_SUCCESS(status))
+ return count;
+
+ return -EINVAL;
+}
+
+static DEVICE_ATTR_WO(prochot_confirm);
static struct attribute *dptf_power_attrs[] = {
&dev_attr_max_platform_power_mw.attr,
&dev_attr_adapter_rating_mw.attr,
&dev_attr_battery_steady_power_mw.attr,
&dev_attr_charger_type.attr,
+ &dev_attr_rest_of_platform_power_mw.attr,
+ &dev_attr_prochot_confirm.attr,
NULL
};
.name = "dptf_power"
};
+#define POWER_STATE_CHANGED 0x81
+#define POWER_PROP_CHANGE_EVENT 0x84
+
+static void dptf_power_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct platform_device *pdev = data;
+ char *attr;
+
+ switch (event) {
+ case POWER_STATE_CHANGED:
+ attr = "platform_power_source";
+ break;
+ case POWER_PROP_CHANGE_EVENT:
+ attr = "rest_of_platform_power_mw";
+ break;
+ default:
+ dev_err(&pdev->dev, "Unsupported event [0x%x]\n", event);
+ return;
+ }
+
+ /*
+ * Notify that an attribute is changed, so that user space can read
+ * again.
+ */
+ sysfs_notify(&pdev->dev.kobj, "dptf_power", attr);
+}
+
static int dptf_power_add(struct platform_device *pdev)
{
struct acpi_device *acpi_dev;
if (ptype != 0x11)
return -ENODEV;
+ result = acpi_install_notify_handler(acpi_dev->handle,
+ ACPI_DEVICE_NOTIFY,
+ dptf_power_notify,
+ (void *)pdev);
+ if (result)
+ return result;
+
result = sysfs_create_group(&pdev->dev.kobj,
&dptf_power_attribute_group);
- if (result)
+ if (result) {
+ acpi_remove_notify_handler(acpi_dev->handle,
+ ACPI_DEVICE_NOTIFY,
+ dptf_power_notify);
return result;
+ }
platform_set_drvdata(pdev, acpi_dev);
static int dptf_power_remove(struct platform_device *pdev)
{
+ struct acpi_device *acpi_dev = platform_get_drvdata(pdev);
+ acpi_remove_notify_handler(acpi_dev->handle,
+ ACPI_DEVICE_NOTIFY,
+ dptf_power_notify);
sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
return 0;