From: Roderick Colenbrander <roderick.colenbrander@xxxxxxxx>
Report DualSense battery status information through power_supply class.
Signed-off-by: Roderick Colenbrander <roderick.colenbrander@xxxxxxxx>
---
drivers/hid/Kconfig | 1 +
drivers/hid/hid-playstation.c | 122 +++++++++++++++++++++++++++++++++-
2 files changed, 122 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index d3258e806998..ef175c1cb15c 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -857,6 +857,7 @@ config HID_PLAYSTATION
tristate "PlayStation HID Driver"
default !EXPERT
depends on HID
+ select POWER_SUPPLY
help
Provides support for Sony PS5 controllers including support for
its special functionalities e.g. touchpad, lights and motion
diff --git a/drivers/hid/hid-playstation.c b/drivers/hid/hid-playstation.c
index 88823a7ba1a0..598d262e2a08 100644
--- a/drivers/hid/hid-playstation.c
+++ b/drivers/hid/hid-playstation.c
@@ -17,6 +17,13 @@
/* Base class for playstation devices. */
struct ps_device {
struct hid_device *hdev;
+ spinlock_t lock;
+
+ struct power_supply_desc battery_desc;
+ struct power_supply *battery;
+ uint8_t battery_capacity;
+ int battery_status;
+
uint8_t mac_address[6];
int (*parse_report)(struct ps_device *dev, struct hid_report *report, u8 *data, int size);
@@ -44,6 +51,11 @@ struct ps_device {
#define DS_BUTTONS2_PS_HOME BIT(0)
#define DS_BUTTONS2_TOUCHPAD BIT(1)
+/* Status field of DualSense input report. */
+#define DS_STATUS_BATTERY_CAPACITY GENMASK(3, 0)
+#define DS_STATUS_CHARGING GENMASK(7, 4)
+#define DS_STATUS_CHARGING_SHIFT 4
+
struct dualsense {
struct ps_device base;
struct input_dev *gamepad;
@@ -131,6 +143,71 @@ static struct input_dev *ps_allocate_input_dev(struct hid_device *hdev, const ch
return input_dev;
}
+static enum power_supply_property ps_power_supply_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_SCOPE
+};
+
+static int ps_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct ps_device *dev = power_supply_get_drvdata(psy);
+ uint8_t battery_capacity;
+ int battery_status;
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ battery_capacity = dev->battery_capacity;
+ battery_status = dev->battery_status;
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = battery_status;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = 1;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = battery_capacity;
+ break;
+ case POWER_SUPPLY_PROP_SCOPE:
+ val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return 0;
+}
+
+static int ps_device_register_battery(struct ps_device *dev)
+{
+ struct power_supply *battery;
+ struct power_supply_config battery_cfg = { .drv_data = dev };
+
+ dev->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
+ dev->battery_desc.properties = ps_power_supply_props;
+ dev->battery_desc.num_properties = ARRAY_SIZE(ps_power_supply_props);
+ dev->battery_desc.get_property = ps_battery_get_property;
+ dev->battery_desc.name = devm_kasprintf(&dev->hdev->dev, GFP_KERNEL,
+ "ps-controller-battery-%pMR", dev->mac_address);
+
+ battery = devm_power_supply_register(&dev->hdev->dev, &dev->battery_desc, &battery_cfg);
+ if (IS_ERR(battery)) {
+ hid_err(dev->hdev, "Unable to register battery device.\n");
+ return PTR_ERR(battery);
+ }
+ dev->battery = battery;
+
+ power_supply_powers(dev->battery, &dev->hdev->dev);
+ return 0;
+}
static struct input_dev *ps_gamepad_create(struct hid_device *hdev)
{
@@ -191,7 +268,9 @@ static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *r
struct hid_device *hdev = ps_dev->hdev;
struct dualsense *ds = (struct dualsense *)ps_dev;
struct dualsense_input_report *ds_report;
- uint8_t value;
+ uint8_t battery_data, battery_capacity, charging_status, value;
+ int battery_status;
+ unsigned long flags;
/* DualSense in USB uses the full HID report for reportID 1, but
* Bluetooth uses a minimal HID report for reportID 1 and reports
@@ -232,6 +311,41 @@ static int dualsense_parse_report(struct ps_device *ps_dev, struct hid_report *r
input_report_key(ds->gamepad, BTN_MODE, ds_report->buttons[2] & DS_BUTTONS2_PS_HOME);
input_sync(ds->gamepad);
+ battery_data = ds_report->status & DS_STATUS_BATTERY_CAPACITY;
+ charging_status = (ds_report->status & DS_STATUS_CHARGING) >> DS_STATUS_CHARGING_SHIFT;
+
+ switch (charging_status) {
+ case 0x0:
+ /* Each unit of battery data corresponds to 10%
+ * 0 = 0-9%, 1 = 10-19%, .. and 10 = 100%
+ */
+ battery_capacity = battery_data == 10 ? 100 : battery_data * 10 + 5;
+ battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ case 0x1:
+ battery_capacity = battery_data == 10 ? 100 : battery_data * 10 + 5;
+ battery_status = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case 0x2:
+ battery_capacity = 100;
+ battery_status = POWER_SUPPLY_STATUS_FULL;
+ break;
+ case 0xa: /* voltage or temperature out of range */
+ case 0xb: /* temperature error */
+ battery_capacity = 0;
+ battery_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ case 0xf: /* charging error */
+ default:
+ battery_capacity = 0;
+ battery_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ }
+
+ spin_lock_irqsave(&ps_dev->lock, flags);
+ ps_dev->battery_capacity = battery_capacity;
+ ps_dev->battery_status = battery_status;
+ spin_unlock_irqrestore(&ps_dev->lock, flags);
+
return 0;
}
@@ -250,6 +364,8 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
hdev->version |= 0x8000;
ds->base.hdev = hdev;
+ ds->base.battery_capacity = 100; /* initial value until parse_report. */
+ ds->base.battery_status = POWER_SUPPLY_STATUS_UNKNOWN;
ds->base.parse_report = dualsense_parse_report;
hid_set_drvdata(hdev, ds);
@@ -266,6 +382,10 @@ static struct ps_device *dualsense_create(struct hid_device *hdev)
goto err;
}
+ ret = ps_device_register_battery((struct ps_device *)ds);
+ if (ret < 0)
+ goto err;
+
return (struct ps_device *)ds;
err:
--
2.26.2
