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Commit 6c5f860d authored by Frank Praznik's avatar Frank Praznik Committed by Jiri Kosina
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HID: sony: Add Dualshock 4 Bluetooth battery and touchpad parsing



Add Dualshock 4 battery and touchpad parsing for Bluetooth reports.

Signed-off-by: default avatarFrank Praznik <frank.praznik@oh.rr.com>
Reviewed-by: default avatarDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent fdcf105d
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+20 −8
Original line number Diff line number Diff line
@@ -861,25 +861,34 @@ static void dualshock4_parse_report(struct sony_sc *sc, __u8 *rd, int size)
						struct hid_input, list);
	struct input_dev *input_dev = hidinput->input;
	unsigned long flags;
	int n, offset = 35;
	int n, offset;
	__u8 cable_state, battery_capacity, battery_charging;

	/* Battery and touchpad data starts at byte 30 in the USB report and
	 * 32 in Bluetooth report.
	 */
	offset = (sc->quirks & DUALSHOCK4_CONTROLLER_USB) ? 30 : 32;

	/* The lower 4 bits of byte 30 contain the battery level
	 * and the 5th bit contains the USB cable state.
	 */
	cable_state = (rd[30] >> 4) & 0x01;
	battery_capacity = rd[30] & 0x0F;
	cable_state = (rd[offset] >> 4) & 0x01;
	battery_capacity = rd[offset] & 0x0F;

	/* On USB the Dualshock 4 battery level goes from 0 to 11.
	 * A battery level of 11 means fully charged.
	/* When a USB power source is connected the battery level ranges from
	 * 0 to 10, and when running on battery power it ranges from 0 to 9.
	 * A battery level above 10 when plugged in means charge completed.
	 */
	if (cable_state && battery_capacity == 11)
	if (!cable_state || battery_capacity > 10)
		battery_charging = 0;
	else
		battery_charging = 1;

	if (!cable_state)
		battery_capacity++;
	if (battery_capacity > 10)
		battery_capacity--;
		battery_capacity = 10;

	battery_capacity *= 10;

	spin_lock_irqsave(&sc->lock, flags);
@@ -888,7 +897,10 @@ static void dualshock4_parse_report(struct sony_sc *sc, __u8 *rd, int size)
	sc->battery_charging = battery_charging;
	spin_unlock_irqrestore(&sc->lock, flags);

	/* The Dualshock 4 multi-touch trackpad data starts at offset 35 on USB.
	offset += 5;

	/* The Dualshock 4 multi-touch trackpad data starts at offset 35 on USB
	 * and 37 on Bluetooth.
	 * The first 7 bits of the first byte is a counter and bit 8 is a touch
	 * indicator that is 0 when pressed and 1 when not pressed.
	 * The next 3 bytes are two 12 bit touch coordinates, X and Y.