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Date: Tue, 30 Sep 2014 13:18:33 -0400
From: Benjamin Tissoires <benjamin.tissoires@...hat.com>
To: Jiri Kosina <jkosina@...e.cz>,
Nestor Lopez Casado <nlopezcasad@...itech.com>,
Andrew de los Reyes <andrew-vger@...molabs.org>
Cc: linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: [PATCH 11/13] 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 <benjamin.tissoires@...hat.com>
---
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 9561a1f..f9a4ec0 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),
--
2.1.0
--
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