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Commit 652aa6a9 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge
Browse files

hid-input/battery: add FEATURE quirk 



Apple keyboards require a FEATURE report to query the battery state,
even though they list as an input.  Without this, it returns an error.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy@goop.org>
parent ce63920b

drivers/hid/hid-ids.h

+1 −0
Original line number Diff line number Diff line
@@ -124,6 +124,7 @@ 
#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI  0x0239

#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO   0x023a

#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS   0x023b

#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI  0x0255

#define USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO   0x0256

#define USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY	0x030a

#define USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY	0x030b

drivers/hid/hid-input.c

+17 −10
Original line number Diff line number Diff line
@@ -283,12 +283,12 @@ static enum power_supply_property hidinput_battery_props[] = { 
};



#define HID_BATTERY_QUIRK_PERCENT	(1 << 0) /* always reports percent */

#define HID_BATTERY_QUIRK_FEATURE	(1 << 1) /* ask for feature report */



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 },

	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,

			       USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),

	  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },

	{}

};
@@ -310,7 +310,6 @@ static int hidinput_get_battery_property(struct power_supply *psy, 
{

	struct hid_device *dev = container_of(psy, struct hid_device, battery);

	int ret = 0;

	int ret_rep;

	__u8 buf[2] = {};



	switch (prop) {
@@ -320,10 +319,12 @@ static int hidinput_get_battery_property(struct power_supply *psy, 
		break;



	case POWER_SUPPLY_PROP_CAPACITY:

		ret_rep = dev->hid_get_raw_report(dev, dev->battery_report_id,

		ret = dev->hid_get_raw_report(dev, dev->battery_report_id,

					      buf, sizeof(buf),

					      dev->battery_report_type);

		if (ret_rep != 2) {



		if (ret != 2) {

			if (ret >= 0)

				ret = -EINVAL;

			break;

		}
@@ -376,6 +377,9 @@ static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 


	quirks = find_battery_quirk(dev);



	hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",

		dev->bus, dev->vendor, dev->product, dev->version, quirks);



	min = field->logical_minimum;

	max = field->logical_maximum;
@@ -384,6 +388,9 @@ static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, 
		max = 100;

	}



	if (quirks & HID_BATTERY_QUIRK_FEATURE)

		report_type = HID_FEATURE_REPORT;



	dev->battery_min = min;

	dev->battery_max = max;

	dev->battery_report_type = report_type;