WARNING: [was Re: [PATCH] Add driver for mouse logitech M560]

[Goffredo Baroncelli <kreijack@inwind.it>]

Unfortunately this driver now crashed on my system; I am investigate the reason, so
please wait a further revision before considering it.

Sorry for the noise


On 2015-04-29 20:24, Goffredo Baroncelli wrote:
> From: Goffredo Baroncelli <kreijack@inwind.it>
> 
> 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 classic "mouse" button.
> 
> 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
> 
> Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
> ---
>  drivers/hid/hid-logitech-hidpp.c | 243 ++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 240 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
> index b3cf6fd..d7e33c8 100644
> --- a/drivers/hid/hid-logitech-hidpp.c
> +++ b/drivers/hid/hid-logitech-hidpp.c
> @@ -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)
> @@ -942,6 +943,223 @@ static int wtp_connect(struct hid_device *hdev, bool connected)
>  }
>  
>  /* -------------------------------------------------------------------------- */
> +/* 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 further the things, 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 send 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 the button are mapped in the report */
> +#define M560_MOUSE_BTN_LEFT		0x01
> +#define M560_MOUSE_BTN_RIGHT		0x02
> +#define M560_MOUSE_BTN_MIDDLE		0x04
> +#define M560_MOUSE_BTN_WHEEL_LEFT	0x08
> +#define M560_MOUSE_BTN_WHEEL_RIGHT	0x10
> +#define M560_MOUSE_BTN_FORWARD		0x20
> +#define M560_MOUSE_BTN_BACKWARD		0x40
> +
> +#define M560_SUB_ID			0x0a
> +#define M560_BUTTON_MODE_REGISTER	0x35
> +
> +/*
> + * m560_send_config_command - send the config_command to the mouse
> + *
> + * @dev: hid device where the mouse belongs
> + *
> + * @return: 0 OK
> + */
> +static int m560_send_config_command(struct hid_device *hdev)
> +{
> +	struct hidpp_report response;
> +	struct hidpp_device *hidpp_dev = hid_get_drvdata(hdev);
> +	int ret;
> +
> +	ret = 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
> +	);
> +
> +	return ret;
> +}
> +
> +/*
> + * m560_allocate - allocate the M560 mouse private data, and link it
> + *                 to the hidpp_device struct
> + *
> + * @hdev: hidpp device where the mouse belongs
> + *
> + * @return: 0 OK
> + */
> +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;
> +};
> +
> +/*
> + * m560_raw_event - process raw event
> + */
> +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;
> +
> +	/* check if the data is a mouse related report */
> +	if (data[0] != 0x02 && data[2] != M560_SUB_ID)
> +		return 0;
> +
> +	if (data[0] == REPORT_ID_HIDPP_LONG &&
> +	    data[2] == M560_SUB_ID && data[06] == 0x00) {
> +		/*
> +		 * m560 mouse button report
> +		 *
> +		 * data[0] = 0x11
> +		 * data[1] = deviceid
> +		 * data[2] = 0x0a
> +		 * data[5] = button (0xaf->middle, 0xb0->forward,
> +		 *                   0xaf ->backward, 0x00->release all)
> +		 * data[6] = 0x00
> +		 */
> +
> +		int btn;
> +
> +		/* check if the event is a button */
> +		btn = data[5];
> +		if (btn != 0x00 && btn != 0xb0 && btn != 0xae && btn != 0xaf)
> +			return 1;
> +
> +		if (btn == 0xaf) {
> +			input_report_key(mydata->input, BTN_MIDDLE, 1);
> +		} else if (btn == 0xb0) {
> +			input_report_key(mydata->input, BTN_FORWARD, 1);
> +		} else if (btn == 0xae) {
> +			input_report_key(mydata->input, BTN_BACK, 1);
> +		} else if (btn == 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);
> +		}
> +
> +		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;
> +		int btn = data[1];
> +
> +		input_report_key(mydata->input, BTN_LEFT,
> +			!!(btn & M560_MOUSE_BTN_LEFT));
> +		input_report_key(mydata->input, BTN_RIGHT,
> +			!!(btn & M560_MOUSE_BTN_RIGHT));
> +
> +		if (btn & M560_MOUSE_BTN_WHEEL_LEFT)
> +			input_report_rel(mydata->input, REL_HWHEEL, -1);
> +		else if (btn & M560_MOUSE_BTN_WHEEL_RIGHT)
> +			input_report_rel(mydata->input, REL_HWHEEL, 1);
> +
> +		v = (int)data[3] | (int)((data[4] & 0x0f) << 8);
> +		if (v & (1<<11))
> +			v = ~0xfff | v;
> +		input_report_rel(mydata->input, REL_X, v);
> +		v = (int)(data[4] >> 4) | (int)(data[5] << 4);
> +		if (v & (1<<11))
> +			v = ~0xfff | v;
> +		input_report_rel(mydata->input, REL_Y, v);
> +		v = (int)data[6];
> +		if (v & (1<<7))
> +			v = ~0xff | v;
> +		input_report_rel(mydata->input, REL_WHEEL, v);
> +
> +		input_sync(mydata->input);
> +	}
> +
> +	return 0;
> +}
> +
> +/*
> + * config the input device
> + */
> +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;
> +
> +	if ((hidpp->quirks & HIDPP_QUIRK_MULTI_INPUT) && origin_is_hid_core)
> +		/* this is the generic hid-input call */
> +		return;
> +
> +	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);
> +
> +}
> +
> +/* -------------------------------------------------------------------------- */
>  /* Generic HID++ devices                                                      */
>  /* -------------------------------------------------------------------------- */
>  
> @@ -953,6 +1171,9 @@ 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 -1;
>  
>  	return 0;
>  }
> @@ -962,6 +1183,8 @@ 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);
> +	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 +1272,8 @@ 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(hidpp->hid_dev, data, size);
>  
>  	return 0;
>  }
> @@ -1126,6 +1351,8 @@ 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) && connected) {
> +		m560_send_config_command(hdev);
>  	}
>  
>  	if (!connected || hidpp->delayed_input)
> @@ -1201,7 +1428,12 @@ 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;
> +	}
> +	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 +1500,7 @@ 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 +1533,11 @@ 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)},
> 


-- 
gpg @keyserver.linux.it: Goffredo Baroncelli <kreijackATinwind.it>
Key fingerprint BBF5 1610 0B64 DAC6 5F7D  17B2 0EDA 9B37 8B82 E0B5