On Apr 11 2017 or thereabouts, Mauro Carvalho Chehab wrote:
> Logitech Anywhere MX2 and MX master produce events for
> the wheel ratchet/free wheel button. Add support for it.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
> ---
On a MX Master, patches 4-5 are:
Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Cheers,
Benjamin
> drivers/hid/hid-logitech-hidpp.c | 23 +++++++++++++++++++++--
> 1 file changed, 21 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
> index 20ced3f519ae..fa5a28cc77ca 100644
> --- a/drivers/hid/hid-logitech-hidpp.c
> +++ b/drivers/hid/hid-logitech-hidpp.c
> @@ -2031,6 +2031,19 @@ static int hidpp_mouse_set_wheel_mode(struct hidpp_device *hidpp,
> return ret;
> }
>
> + ret = hidpp_send_fap_command_sync(hidpp, hrd->feature_index,
> + CMD_MOUSE_GET_WHEEL_RATCHET,
> + params, 0, &response);
> + if (ret > 0) {
> + hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
> + __func__, ret);
> + return -EPROTO;
> + }
> + if (ret)
> + return ret;
> +
> + hrd->ratchet = response.fap.params[0] & 0x01;
> +
> params[0] = (invert ? BIT(2) : 0) |
> (high_res ? BIT(1) : 0) |
> (hidpp_mode ? BIT(0) : 0);
> @@ -2564,10 +2577,11 @@ static int high_res_raw_event(struct hid_device *hdev, u8 *data, int size)
> input_report_rel(hrd->input, REL_HIRES_WHEEL, delta);
> else
> input_report_rel(hrd->input, REL_WHEEL, delta);
> + } else if (data[3] == 0x10) {
> + hrd->ratchet = data[4] & 0x01;
> + input_report_switch(hrd->input, SW_RATCHET, hrd->ratchet);
> }
>
> - /* FIXME: also report ratchet events to userspace */
> -
> return 1;
> }
>
> @@ -2580,6 +2594,11 @@ static void high_res_populate_input(struct hidpp_device *hidpp,
>
> __set_bit(REL_WHEEL, hrd->input->relbit);
> __set_bit(REL_HIRES_WHEEL, hrd->input->relbit);
> + __set_bit(EV_SW, hrd->input->evbit);
> + __set_bit(SW_RATCHET, hrd->input->swbit);
> +
> + /* Report current state of the ratchet switch */
> + input_report_switch(hrd->input, SW_RATCHET, hrd->ratchet);
> }
>
>
> --
> 2.9.3
>
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