Commit 8a09b4fa authored by Goffredo Baroncelli's avatar Goffredo Baroncelli Committed by Jiri Kosina
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HID: hidpp: Add driver for mouse logitech M560 



The Logitech M560 is a wireless mouse designed for windows 8 which uses
the unifying receiver.
Compared to a standard one, some buttons (the middle one and the
two ones placed on the side) are bound to a key combination
instead of a generating classic "mouse" button events.

The device shows up as a mouse and keyboard combination: when the middle
button is pressed it sends a key (as keyboard) combination, the same
happens for the two side button. The left/right/wheel work as expected
from a mouse. To complicate things further, the middle button sends
different keys combinations between odd and even presses.
In the "even" press it also sends a left click. But the worst thing
is that no event is generated when the middle button is released.

It is possible to re-configure the mouse sending a command (see function
m560_send_config_command()). After this command the mouse sends some
useful data when the buttons are pressed and/or released.

[jkosina@suse.cz: fix build breakage due to leftover from previous
 patch version]
Signed-off-by: default avatarGoffredo Baroncelli <kreijack@inwind.it>
Reviewed-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 04fba786

drivers/hid/hid-logitech-hidpp.c

+224 −3
Original line number Diff line number Diff line
@@ -40,8 +40,9 @@ MODULE_PARM_DESC(disable_raw_mode, 
#define HIDPP_REPORT_LONG_LENGTH		20



#define HIDPP_QUIRK_CLASS_WTP			BIT(0)

#define HIDPP_QUIRK_CLASS_M560			BIT(1)



/* bits 1..20 are reserved for classes */

/* bits 2..20 are reserved for classes */

#define HIDPP_QUIRK_DELAYED_INIT		BIT(21)

#define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS	BIT(22)

#define HIDPP_QUIRK_MULTI_INPUT			BIT(23)
@@ -941,6 +942,207 @@ static int wtp_connect(struct hid_device *hdev, bool connected) 
			true, true);

}



/* ------------------------------------------------------------------------- */

/* Logitech M560 devices                                                     */

/* ------------------------------------------------------------------------- */



/*

 * Logitech M560 protocol overview

 *

 * The Logitech M560 mouse, is designed for windows 8. When the middle and/or

 * the sides buttons are pressed, it sends some keyboard keys events

 * instead of buttons ones.

 * To complicate things further, the middle button keys sequence

 * is different from the odd press and the even press.

 *

 * forward button -> Super_R

 * backward button -> Super_L+'d' (press only)

 * middle button -> 1st time: Alt_L+SuperL+XF86TouchpadOff (press only)

 *                  2nd time: left-click (press only)

 * NB: press-only means that when the button is pressed, the

 * KeyPress/ButtonPress and KeyRelease/ButtonRelease events are generated

 * together sequentially; instead when the button is released, no event is

 * generated !

 *

 * With the command

 *	10<xx>0a 3500af03 (where <xx> is the mouse id),

 * the mouse reacts differently:

 * - it never sends a keyboard key event

 * - for the three mouse button it sends:

 *	middle button               press   11<xx>0a 3500af00...

 *	side 1 button (forward)     press   11<xx>0a 3500b000...

 *	side 2 button (backward)    press   11<xx>0a 3500ae00...

 *	middle/side1/side2 button   release 11<xx>0a 35000000...

 */



static const u8 m560_config_parameter[] = {0x00, 0xaf, 0x03};



struct m560_private_data {

	struct input_dev *input;

};



/* how buttons are mapped in the report */

#define M560_MOUSE_BTN_LEFT		0x01

#define M560_MOUSE_BTN_RIGHT		0x02

#define M560_MOUSE_BTN_WHEEL_LEFT	0x08

#define M560_MOUSE_BTN_WHEEL_RIGHT	0x10



#define M560_SUB_ID			0x0a

#define M560_BUTTON_MODE_REGISTER	0x35



static int m560_send_config_command(struct hid_device *hdev, bool connected)

{

	struct hidpp_report response;

	struct hidpp_device *hidpp_dev;



	hidpp_dev = hid_get_drvdata(hdev);



	if (!connected)

		return -ENODEV;



	return hidpp_send_rap_command_sync(

		hidpp_dev,

		REPORT_ID_HIDPP_SHORT,

		M560_SUB_ID,

		M560_BUTTON_MODE_REGISTER,

		(u8 *)m560_config_parameter,

		sizeof(m560_config_parameter),

		&response

	);

}



static int m560_allocate(struct hid_device *hdev)

{

	struct hidpp_device *hidpp = hid_get_drvdata(hdev);

	struct m560_private_data *d;



	d = devm_kzalloc(&hdev->dev, sizeof(struct m560_private_data),

			GFP_KERNEL);

	if (!d)

		return -ENOMEM;



	hidpp->private_data = d;



	return 0;

};



static int m560_raw_event(struct hid_device *hdev, u8 *data, int size)

{

	struct hidpp_device *hidpp = hid_get_drvdata(hdev);

	struct m560_private_data *mydata = hidpp->private_data;



	/* sanity check */

	if (!mydata || !mydata->input) {

		hid_err(hdev, "error in parameter\n");

		return -EINVAL;

	}



	if (size < 7) {

		hid_err(hdev, "error in report\n");

		return 0;

	}



	if (data[0] == REPORT_ID_HIDPP_LONG &&

	    data[2] == M560_SUB_ID && data[6] == 0x00) {

		/*

		 * m560 mouse report for middle, forward and backward button

		 *

		 * data[0] = 0x11

		 * data[1] = device-id

		 * data[2] = 0x0a

		 * data[5] = 0xaf -> middle

		 *	     0xb0 -> forward

		 *	     0xae -> backward

		 *	     0x00 -> release all

		 * data[6] = 0x00

		 */



		switch (data[5]) {

		case 0xaf:

			input_report_key(mydata->input, BTN_MIDDLE, 1);

			break;

		case 0xb0:

			input_report_key(mydata->input, BTN_FORWARD, 1);

			break;

		case 0xae:

			input_report_key(mydata->input, BTN_BACK, 1);

			break;

		case 0x00:

			input_report_key(mydata->input, BTN_BACK, 0);

			input_report_key(mydata->input, BTN_FORWARD, 0);

			input_report_key(mydata->input, BTN_MIDDLE, 0);

			break;

		default:

			hid_err(hdev, "error in report\n");

			return 0;

		}

		input_sync(mydata->input);



	} else if (data[0] == 0x02) {

		/*

		 * Logitech M560 mouse report

		 *

		 * data[0] = type (0x02)

		 * data[1..2] = buttons

		 * data[3..5] = xy

		 * data[6] = wheel

		 */



		int v;



		input_report_key(mydata->input, BTN_LEFT,

			!!(data[1] & M560_MOUSE_BTN_LEFT));

		input_report_key(mydata->input, BTN_RIGHT,

			!!(data[1] & M560_MOUSE_BTN_RIGHT));



		if (data[1] & M560_MOUSE_BTN_WHEEL_LEFT)

			input_report_rel(mydata->input, REL_HWHEEL, -1);

		else if (data[1] & M560_MOUSE_BTN_WHEEL_RIGHT)

			input_report_rel(mydata->input, REL_HWHEEL, 1);



		v = hid_snto32(hid_field_extract(hdev, data+3, 0, 12), 12);

		input_report_rel(mydata->input, REL_X, v);



		v = hid_snto32(hid_field_extract(hdev, data+3, 12, 12), 12);

		input_report_rel(mydata->input, REL_Y, v);



		v = hid_snto32(data[6], 8);

		input_report_rel(mydata->input, REL_WHEEL, v);



		input_sync(mydata->input);

	}



	return 1;

}



static void m560_populate_input(struct hidpp_device *hidpp,

		struct input_dev *input_dev, bool origin_is_hid_core)

{

	struct m560_private_data *mydata = hidpp->private_data;



	mydata->input = input_dev;



	__set_bit(EV_KEY, mydata->input->evbit);

	__set_bit(BTN_MIDDLE, mydata->input->keybit);

	__set_bit(BTN_RIGHT, mydata->input->keybit);

	__set_bit(BTN_LEFT, mydata->input->keybit);

	__set_bit(BTN_BACK, mydata->input->keybit);

	__set_bit(BTN_FORWARD, mydata->input->keybit);



	__set_bit(EV_REL, mydata->input->evbit);

	__set_bit(REL_X, mydata->input->relbit);

	__set_bit(REL_Y, mydata->input->relbit);

	__set_bit(REL_WHEEL, mydata->input->relbit);

	__set_bit(REL_HWHEEL, mydata->input->relbit);

}



static int m560_input_mapping(struct hid_device *hdev, struct hid_input *hi,

		struct hid_field *field, struct hid_usage *usage,

		unsigned long **bit, int *max)

{

	return -1;

}



/* -------------------------------------------------------------------------- */

/* Generic HID++ devices                                                      */

/* -------------------------------------------------------------------------- */
@@ -953,6 +1155,9 @@ static int hidpp_input_mapping(struct hid_device *hdev, struct hid_input *hi, 


	if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)

		return wtp_input_mapping(hdev, hi, field, usage, bit, max);

	else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560 &&

			field->application != HID_GD_MOUSE)

		return m560_input_mapping(hdev, hi, field, usage, bit, max);



	return 0;

}
@@ -962,6 +1167,8 @@ static void hidpp_populate_input(struct hidpp_device *hidpp, 
{

	if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)

		wtp_populate_input(hidpp, input, origin_is_hid_core);

	else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560)

		m560_populate_input(hidpp, input, origin_is_hid_core);

}



static void hidpp_input_configured(struct hid_device *hdev,
@@ -1049,6 +1256,8 @@ static int hidpp_raw_event(struct hid_device *hdev, struct hid_report *report, 


	if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)

		return wtp_raw_event(hdev, data, size);

	else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560)

		return m560_raw_event(hdev, data, size);



	return 0;

}
@@ -1126,6 +1335,10 @@ static void hidpp_connect_event(struct hidpp_device *hidpp) 
		ret = wtp_connect(hdev, connected);

		if (ret)

			return;

	} else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) {

		ret = m560_send_config_command(hdev, connected);

		if (ret)

			return;

	}



	if (!connected || hidpp->delayed_input)
@@ -1201,7 +1414,11 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id) 
	if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {

		ret = wtp_allocate(hdev, id);

		if (ret)

			goto wtp_allocate_fail;

			goto allocate_fail;

	} else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) {

		ret = m560_allocate(hdev);

		if (ret)

			goto allocate_fail;

	}



	INIT_WORK(&hidpp->work, delayed_work_cb);
@@ -1268,7 +1485,7 @@ hid_hw_start_fail: 
hid_parse_fail:

	cancel_work_sync(&hidpp->work);

	mutex_destroy(&hidpp->send_mutex);

wtp_allocate_fail:

allocate_fail:

	hid_set_drvdata(hdev, NULL);

	return ret;

}
@@ -1301,6 +1518,10 @@ static const struct hid_device_id hidpp_devices[] = { 
		USB_VENDOR_ID_LOGITECH, 0x4102),

	  .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_MULTI_INPUT |

			 HIDPP_QUIRK_CLASS_WTP },

	{ /* Mouse logitech M560 */

	  HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,

		USB_VENDOR_ID_LOGITECH, 0x402d),

	  .driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 },



	{ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,

		USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},

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