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authorHans de Goede <hdegoede@redhat.com>2019-04-20 14:22:16 +0300
committerBenjamin Tissoires <benjamin.tissoires@redhat.com>2019-04-23 19:03:05 +0300
commit7457bc1b0ebf30d98ce993ec876a5ab2b143539d (patch)
treee5c198ff2f11f0cee8739f3004bf340ae74e8f73 /drivers/hid
parent4a79bcc64a0514d630783b8d19cf9a85e46fe988 (diff)
downloadlinux-7457bc1b0ebf30d98ce993ec876a5ab2b143539d.tar.xz
HID: logitech-hidpp: add support for HID++ 1.0 extra mouse buttons reports
Some mice have extra buttons which are only reported through HID++ 1.0 extra mouse buttons reports, this commit adds support for this and automatically enables this support for all 27 MHz mice. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-logitech-hidpp.c77
1 files changed, 76 insertions, 1 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 7f6bebae3a78..215c3a256c27 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -72,6 +72,7 @@ MODULE_PARM_DESC(disable_tap_to_click,
#define HIDPP_QUIRK_HI_RES_SCROLL_X2120 BIT(27)
#define HIDPP_QUIRK_HI_RES_SCROLL_X2121 BIT(28)
#define HIDPP_QUIRK_HIDPP_WHEELS BIT(29)
+#define HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS BIT(30)
/* These are just aliases for now */
#define HIDPP_QUIRK_KBD_SCROLL_WHEEL HIDPP_QUIRK_HIDPP_WHEELS
@@ -2793,6 +2794,64 @@ static void hidpp10_wheel_populate_input(struct hidpp_device *hidpp,
}
/* -------------------------------------------------------------------------- */
+/* HID++1.0 mice which use HID++ reports for extra mouse buttons */
+/* -------------------------------------------------------------------------- */
+static int hidpp10_extra_mouse_buttons_connect(struct hidpp_device *hidpp)
+{
+ return hidpp10_set_register(hidpp, HIDPP_REG_ENABLE_REPORTS, 0,
+ HIDPP_ENABLE_MOUSE_EXTRA_BTN_REPORT,
+ HIDPP_ENABLE_MOUSE_EXTRA_BTN_REPORT);
+}
+
+static int hidpp10_extra_mouse_buttons_raw_event(struct hidpp_device *hidpp,
+ u8 *data, int size)
+{
+ int i;
+
+ if (!hidpp->input)
+ return -EINVAL;
+
+ if (size < 7)
+ return 0;
+
+ if (data[0] != REPORT_ID_HIDPP_SHORT ||
+ data[2] != HIDPP_SUB_ID_MOUSE_EXTRA_BTNS)
+ return 0;
+
+ /*
+ * Buttons are either delivered through the regular mouse report *or*
+ * through the extra buttons report. At least for button 6 how it is
+ * delivered differs per receiver firmware version. Even receivers with
+ * the same usb-id show different behavior, so we handle both cases.
+ */
+ for (i = 0; i < 8; i++)
+ input_report_key(hidpp->input, BTN_MOUSE + i,
+ (data[3] & (1 << i)));
+
+ /* Some mice report events on button 9+, use BTN_MISC */
+ for (i = 0; i < 8; i++)
+ input_report_key(hidpp->input, BTN_MISC + i,
+ (data[4] & (1 << i)));
+
+ input_sync(hidpp->input);
+ return 1;
+}
+
+static void hidpp10_extra_mouse_buttons_populate_input(
+ struct hidpp_device *hidpp, struct input_dev *input_dev)
+{
+ /* BTN_MOUSE - BTN_MOUSE+7 are set already by the descriptor */
+ __set_bit(BTN_0, input_dev->keybit);
+ __set_bit(BTN_1, input_dev->keybit);
+ __set_bit(BTN_2, input_dev->keybit);
+ __set_bit(BTN_3, input_dev->keybit);
+ __set_bit(BTN_4, input_dev->keybit);
+ __set_bit(BTN_5, input_dev->keybit);
+ __set_bit(BTN_6, input_dev->keybit);
+ __set_bit(BTN_7, input_dev->keybit);
+}
+
+/* -------------------------------------------------------------------------- */
/* High-resolution scroll wheels */
/* -------------------------------------------------------------------------- */
@@ -2879,6 +2938,9 @@ static void hidpp_populate_input(struct hidpp_device *hidpp,
if (hidpp->quirks & HIDPP_QUIRK_HIDPP_WHEELS)
hidpp10_wheel_populate_input(hidpp, input);
+
+ if (hidpp->quirks & HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS)
+ hidpp10_extra_mouse_buttons_populate_input(hidpp, input);
}
static int hidpp_input_configured(struct hid_device *hdev,
@@ -2956,6 +3018,12 @@ static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data,
return ret;
}
+ if (hidpp->quirks & HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS) {
+ ret = hidpp10_extra_mouse_buttons_raw_event(hidpp, data, size);
+ if (ret != 0)
+ return ret;
+ }
+
return 0;
}
@@ -3209,6 +3277,12 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
return;
}
+ if (hidpp->quirks & HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS) {
+ ret = hidpp10_extra_mouse_buttons_connect(hidpp);
+ if (ret)
+ return;
+ }
+
/* the device is already connected, we can ask for its name and
* protocol */
if (!hidpp->protocol_major) {
@@ -3374,7 +3448,8 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (id->group == HID_GROUP_LOGITECH_27MHZ_DEVICE &&
hidpp_application_equals(hdev, HID_GD_MOUSE))
- hidpp->quirks |= HIDPP_QUIRK_HIDPP_WHEELS;
+ hidpp->quirks |= HIDPP_QUIRK_HIDPP_WHEELS |
+ HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS;
if (disable_raw_mode) {
hidpp->quirks &= ~HIDPP_QUIRK_CLASS_WTP;