MODULE_PARM_DESC(disable_raw_mode,
"Disable Raw mode reporting for touchpads and keep firmware gestures.");
+static bool disable_tap_to_click;
+module_param(disable_tap_to_click, bool, 0644);
+MODULE_PARM_DESC(disable_tap_to_click,
+ "Disable Tap-To-Click mode reporting for touchpads (only on the K400 currently).");
+
#define REPORT_ID_HIDPP_SHORT 0x10
#define REPORT_ID_HIDPP_LONG 0x11
#define HIDPP_QUIRK_CLASS_WTP BIT(0)
#define HIDPP_QUIRK_CLASS_M560 BIT(1)
+#define HIDPP_QUIRK_CLASS_K400 BIT(2)
/* bits 2..20 are reserved for classes */
#define HIDPP_QUIRK_CONNECT_EVENTS BIT(21)
return name;
}
+/* -------------------------------------------------------------------------- */
+/* 0x6010: Touchpad FW items */
+/* -------------------------------------------------------------------------- */
+
+#define HIDPP_PAGE_TOUCHPAD_FW_ITEMS 0x6010
+
+#define CMD_TOUCHPAD_FW_ITEMS_SET 0x10
+
+struct hidpp_touchpad_fw_items {
+ uint8_t presence;
+ uint8_t desired_state;
+ uint8_t state;
+ uint8_t persistent;
+};
+
+/**
+ * send a set state command to the device by reading the current items->state
+ * field. items is then filled with the current state.
+ */
+static int hidpp_touchpad_fw_items_set(struct hidpp_device *hidpp,
+ u8 feature_index,
+ struct hidpp_touchpad_fw_items *items)
+{
+ struct hidpp_report response;
+ int ret;
+ u8 *params = (u8 *)response.fap.params;
+
+ ret = hidpp_send_fap_command_sync(hidpp, feature_index,
+ CMD_TOUCHPAD_FW_ITEMS_SET, &items->state, 1, &response);
+
+ if (ret > 0) {
+ hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n",
+ __func__, ret);
+ return -EPROTO;
+ }
+ if (ret)
+ return ret;
+
+ items->presence = params[0];
+ items->desired_state = params[1];
+ items->state = params[2];
+ items->persistent = params[3];
+
+ return 0;
+}
+
/* -------------------------------------------------------------------------- */
/* 0x6100: TouchPadRawXY */
/* -------------------------------------------------------------------------- */
return -1;
}
+/* ------------------------------------------------------------------------- */
+/* Logitech K400 devices */
+/* ------------------------------------------------------------------------- */
+
+/*
+ * The Logitech K400 keyboard has an embedded touchpad which is seen
+ * as a mouse from the OS point of view. There is a hardware shortcut to disable
+ * tap-to-click but the setting is not remembered accross reset, annoying some
+ * users.
+ *
+ * We can toggle this feature from the host by using the feature 0x6010:
+ * Touchpad FW items
+ */
+
+struct k400_private_data {
+ u8 feature_index;
+};
+
+static int k400_disable_tap_to_click(struct hidpp_device *hidpp)
+{
+ struct k400_private_data *k400 = hidpp->private_data;
+ struct hidpp_touchpad_fw_items items = {};
+ int ret;
+ u8 feature_type;
+
+ if (!k400->feature_index) {
+ ret = hidpp_root_get_feature(hidpp,
+ HIDPP_PAGE_TOUCHPAD_FW_ITEMS,
+ &k400->feature_index, &feature_type);
+ if (ret)
+ /* means that the device is not powered up */
+ return ret;
+ }
+
+ ret = hidpp_touchpad_fw_items_set(hidpp, k400->feature_index, &items);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int k400_allocate(struct hid_device *hdev)
+{
+ struct hidpp_device *hidpp = hid_get_drvdata(hdev);
+ struct k400_private_data *k400;
+
+ k400 = devm_kzalloc(&hdev->dev, sizeof(struct k400_private_data),
+ GFP_KERNEL);
+ if (!k400)
+ return -ENOMEM;
+
+ hidpp->private_data = k400;
+
+ return 0;
+};
+
+static int k400_connect(struct hid_device *hdev, bool connected)
+{
+ struct hidpp_device *hidpp = hid_get_drvdata(hdev);
+
+ if (!connected)
+ return 0;
+
+ if (!disable_tap_to_click)
+ return 0;
+
+ return k400_disable_tap_to_click(hidpp);
+}
+
/* -------------------------------------------------------------------------- */
/* Generic HID++ devices */
/* -------------------------------------------------------------------------- */
m560_populate_input(hidpp, input, origin_is_hid_core);
}
-static void hidpp_input_configured(struct hid_device *hdev,
+static int hidpp_input_configured(struct hid_device *hdev,
struct hid_input *hidinput)
{
struct hidpp_device *hidpp = hid_get_drvdata(hdev);
struct input_dev *input = hidinput->input;
hidpp_populate_input(hidpp, input, true);
+
+ return 0;
}
static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data,
ret = m560_send_config_command(hdev, connected);
if (ret)
return;
+ } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) {
+ ret = k400_connect(hdev, connected);
+ if (ret)
+ return;
}
if (!connected || hidpp->delayed_input)
ret = m560_allocate(hdev);
if (ret)
goto allocate_fail;
+ } else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) {
+ ret = k400_allocate(hdev);
+ if (ret)
+ goto allocate_fail;
}
INIT_WORK(&hidpp->work, delayed_work_cb);
HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
USB_VENDOR_ID_LOGITECH, 0x402d),
.driver_data = HIDPP_QUIRK_DELAYED_INIT | HIDPP_QUIRK_CLASS_M560 },
+ { /* Keyboard logitech K400 */
+ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
+ USB_VENDOR_ID_LOGITECH, 0x4024),
+ .driver_data = HIDPP_QUIRK_CONNECT_EVENTS | HIDPP_QUIRK_CLASS_K400 },
{ HID_DEVICE(BUS_USB, HID_GROUP_LOGITECH_DJ_DEVICE,
USB_VENDOR_ID_LOGITECH, HID_ANY_ID)},
projects / firefly-linux-kernel-4.4.55.git / blobdiff