From 586bdc4e4f15fec37dc37167d6f314ea94aa14d1 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 30 Sep 2014 13:18:33 -0400 Subject: [PATCH] HID: logitech-hidpp: Add Wireless Touchpad T650 support All the bits are now in place to add the support of the Touchpad T650. The creation/population of the input device is delayed until the device is ready. The T650 uses the special HID++ reporting protocol, so activate this on connect. Signed-off-by: Benjamin Tissoires Tested-by: Andrew de los Reyes Signed-off-by: Jiri Kosina --- drivers/hid/hid-logitech-hidpp.c | 105 ++++++++++++++++++++++++++++++- 1 file changed, 103 insertions(+), 2 deletions(-) diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 9561a1f9b42b..f9a4ec0ff76d 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -471,6 +471,9 @@ out_err: #define HIDPP_PAGE_TOUCHPAD_RAW_XY 0x6100 #define CMD_TOUCHPAD_GET_RAW_INFO 0x01 +#define CMD_TOUCHPAD_SET_RAW_REPORT_STATE 0x21 + +#define EVENT_TOUCHPAD_RAW_XY 0x00 #define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT 0x01 #define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT 0x03 @@ -530,6 +533,59 @@ static int hidpp_touchpad_get_raw_info(struct hidpp_device *hidpp, return ret; } +static int hidpp_touchpad_set_raw_report_state(struct hidpp_device *hidpp_dev, + u8 feature_index, bool send_raw_reports, + bool sensor_enhanced_settings) +{ + struct hidpp_report response; + + /* + * Params: + * bit 0 - enable raw + * bit 1 - 16bit Z, no area + * bit 2 - enhanced sensitivity + * bit 3 - width, height (4 bits each) instead of area + * bit 4 - send raw + gestures (degrades smoothness) + * remaining bits - reserved + */ + u8 params = send_raw_reports | (sensor_enhanced_settings << 2); + + return hidpp_send_fap_command_sync(hidpp_dev, feature_index, + CMD_TOUCHPAD_SET_RAW_REPORT_STATE, ¶ms, 1, &response); +} + +static void hidpp_touchpad_touch_event(u8 *data, + struct hidpp_touchpad_raw_xy_finger *finger) +{ + u8 x_m = data[0] << 2; + u8 y_m = data[2] << 2; + + finger->x = x_m << 6 | data[1]; + finger->y = y_m << 6 | data[3]; + + finger->contact_type = data[0] >> 6; + finger->contact_status = data[2] >> 6; + + finger->z = data[4]; + finger->area = data[5]; + finger->finger_id = data[6] >> 4; +} + +static void hidpp_touchpad_raw_xy_event(struct hidpp_device *hidpp_dev, + u8 *data, struct hidpp_touchpad_raw_xy *raw_xy) +{ + memset(raw_xy, 0, sizeof(struct hidpp_touchpad_raw_xy)); + raw_xy->end_of_frame = data[8] & 0x01; + raw_xy->spurious_flag = (data[8] >> 1) & 0x01; + raw_xy->finger_count = data[15] & 0x0f; + raw_xy->button = (data[8] >> 2) & 0x01; + + if (raw_xy->finger_count) { + hidpp_touchpad_touch_event(&data[2], &raw_xy->fingers[0]); + hidpp_touchpad_touch_event(&data[9], &raw_xy->fingers[1]); + } +} + /* ************************************************************************** */ /* */ /* Device Support */ @@ -672,11 +728,28 @@ static int wtp_raw_event(struct hid_device *hdev, u8 *data, int size) { struct hidpp_device *hidpp = hid_get_drvdata(hdev); struct wtp_data *wd = hidpp->private_data; + struct hidpp_report *report = (struct hidpp_report *)data; + struct hidpp_touchpad_raw_xy raw; - if (!wd || !wd->input || (data[0] != 0x02) || size < 21) + if (!wd || !wd->input) return 1; - return wtp_mouse_raw_xy_event(hidpp, &data[7]); + switch (data[0]) { + case 0x02: + if (size < 21) + return 1; + return wtp_mouse_raw_xy_event(hidpp, &data[7]); + case REPORT_ID_HIDPP_LONG: + if ((report->fap.feature_index != wd->mt_feature_index) || + (report->fap.funcindex_clientid != EVENT_TOUCHPAD_RAW_XY)) + return 1; + hidpp_touchpad_raw_xy_event(hidpp, data + 4, &raw); + + wtp_send_raw_xy_event(hidpp, &raw); + return 0; + } + + return 0; } static int wtp_get_config(struct hidpp_device *hidpp) @@ -721,6 +794,27 @@ static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id) return 0; }; +static void wtp_connect(struct hid_device *hdev, bool connected) +{ + struct hidpp_device *hidpp = hid_get_drvdata(hdev); + struct wtp_data *wd = hidpp->private_data; + int ret; + + if (!connected) + return; + + if (!wd->x_size) { + ret = wtp_get_config(hidpp); + if (ret) { + hid_err(hdev, "Can not get wtp config: %d\n", ret); + return; + } + } + + hidpp_touchpad_set_raw_report_state(hidpp, wd->mt_feature_index, + true, true); +} + /* -------------------------------------------------------------------------- */ /* Generic HID++ devices */ /* -------------------------------------------------------------------------- */ @@ -897,6 +991,9 @@ static void hidpp_connect_event(struct hidpp_device *hidpp) char *name, *devm_name; u8 name_length; + if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) + wtp_connect(hdev, connected); + if (!connected || hidpp->delayed_input) return; @@ -1033,6 +1130,10 @@ static void hidpp_remove(struct hid_device *hdev) } static const struct hid_device_id hidpp_devices[] = { + { /* wireless touchpad T650 */ + HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE, + USB_VENDOR_ID_LOGITECH, 0x4101), + .driver_data = HIDPP_QUIRK_CLASS_WTP | HIDPP_QUIRK_DELAYED_INIT }, { /* wireless touchpad T651 */ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_T651), -- 2.20.1