diff options
Diffstat (limited to 'drivers/hid/hid-input.c')
| -rw-r--r-- | drivers/hid/hid-input.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index b108ce71583..69dec476883 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -32,6 +32,8 @@ #include <linux/hid.h> #include <linux/hid-debug.h> +#include "hid-ids.h" + #define unk KEY_UNKNOWN static const unsigned char hid_keyboard[256] = { @@ -280,6 +282,28 @@ static enum power_supply_property hidinput_battery_props[] = { POWER_SUPPLY_PROP_STATUS }; +#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ + +static const struct hid_device_id hid_battery_quirks[] = { + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE), + HID_BATTERY_QUIRK_PERCENT }, + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD), + HID_BATTERY_QUIRK_PERCENT }, + {} +}; + +static unsigned find_battery_quirk(struct hid_device *hdev) +{ + unsigned quirks = 0; + const struct hid_device_id *match; + + match = hid_match_id(hdev, hid_battery_quirks); + if (match != NULL) + quirks = match->driver_data; + + return quirks; +} + static int hidinput_get_battery_property(struct power_supply *psy, enum power_supply_property prop, union power_supply_propval *val) @@ -304,10 +328,11 @@ static int hidinput_get_battery_property(struct power_supply *psy, break; } - /* store the returned value */ - /* I'm not calculating this using the logical_minimum and maximum */ - /* because my device returns 0-100 even though the min and max are 0-255 */ - val->intval = buf[1]; + if (dev->battery_min < dev->battery_max && + buf[1] >= dev->battery_min && + buf[1] <= dev->battery_max) + val->intval = (100 * (buf[1] - dev->battery_min)) / + (dev->battery_max - dev->battery_min); break; case POWER_SUPPLY_PROP_MODEL_NAME: @@ -330,6 +355,7 @@ static void hidinput_setup_battery(struct hid_device *dev, unsigned id, s32 min, { struct power_supply *battery = &dev->battery; int ret; + unsigned quirks; if (battery->name != NULL) return; /* already initialized? */ @@ -344,6 +370,13 @@ static void hidinput_setup_battery(struct hid_device *dev, unsigned id, s32 min, battery->use_for_apm = 0; battery->get_property = hidinput_get_battery_property; + quirks = find_battery_quirk(dev); + + if (quirks & HID_BATTERY_QUIRK_PERCENT) { + min = 0; + max = 100; + } + dev->battery_min = min; dev->battery_max = max; dev->battery_report_id = id; |