On Sun, 10 May 2015, Goffredo Baroncelli wrote:
> From: Goffredo Baroncelli <kreijack@xxxxxxxxx>
>
> 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.
>
> Signed-off-by: Goffredo Baroncelli <kreijack@xxxxxxxxx>
> ---
> drivers/hid/hid-logitech-hidpp.c | 241 ++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 238 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
> index b3cf6fd..2275f2a 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)
> @@ -941,6 +942,221 @@ static int wtp_connect(struct hid_device *hdev, bool connected)
> true, true);
> }
>
> +/*
> + * copied from hid-core.c
> + */
> +static u32 hidpp_extract(u8 *report, unsigned offset, unsigned n)
> +{
> + u64 x;
> +
> + report += offset >> 3; /* adjust byte index */
> + offset &= 7; /* now only need bit offset into one byte */
> + x = get_unaligned_le64(report);
> + x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
> + return (u32)x;
> +}
I hate such code duplication. How about we rename it to
hid_field_extract() and make its linkage external?
[ ... snip ... ]
> @@ -1301,6 +1532,10 @@ 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 },
Seems like you forgot to add the device id to hid_have_special_driver[]?
Otherwise it looks good.
Thanks,
--
Jiri Kosina
SUSE Labs
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