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Diffstat (limited to 'drivers/hid/hid-ite.c')
-rw-r--r--drivers/hid/hid-ite.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/hid/hid-ite.c b/drivers/hid/hid-ite.c
new file mode 100644
index 000000000..75ebfcf31
--- /dev/null
+++ b/drivers/hid/hid-ite.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * HID driver for some ITE "special" devices
+ * Copyright (c) 2017 Hans de Goede <hdegoede@redhat.com>
+ */
+
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#define QUIRK_TOUCHPAD_ON_OFF_REPORT BIT(0)
+
+static __u8 *ite_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize)
+{
+ unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+
+ if (quirks & QUIRK_TOUCHPAD_ON_OFF_REPORT) {
+ /* For Acer Aspire Switch 10 SW5-012 keyboard-dock */
+ if (*rsize == 188 && rdesc[162] == 0x81 && rdesc[163] == 0x02) {
+ hid_info(hdev, "Fixing up Acer Sw5-012 ITE keyboard report descriptor\n");
+ rdesc[163] = HID_MAIN_ITEM_RELATIVE;
+ }
+ /* For Acer One S1002/S1003 keyboard-dock */
+ if (*rsize == 188 && rdesc[185] == 0x81 && rdesc[186] == 0x02) {
+ hid_info(hdev, "Fixing up Acer S1002/S1003 ITE keyboard report descriptor\n");
+ rdesc[186] = HID_MAIN_ITEM_RELATIVE;
+ }
+ /* For Acer Aspire Switch 10E (SW3-016) keyboard-dock */
+ if (*rsize == 210 && rdesc[184] == 0x81 && rdesc[185] == 0x02) {
+ hid_info(hdev, "Fixing up Acer Aspire Switch 10E (SW3-016) ITE keyboard report descriptor\n");
+ rdesc[185] = HID_MAIN_ITEM_RELATIVE;
+ }
+ }
+
+ return rdesc;
+}
+
+static int ite_input_mapping(struct hid_device *hdev,
+ struct hid_input *hi, struct hid_field *field,
+ struct hid_usage *usage, unsigned long **bit,
+ int *max)
+{
+
+ unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
+
+ if ((quirks & QUIRK_TOUCHPAD_ON_OFF_REPORT) &&
+ (usage->hid & HID_USAGE_PAGE) == 0x00880000) {
+ if (usage->hid == 0x00880078) {
+ /* Touchpad on, userspace expects F22 for this */
+ hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_F22);
+ return 1;
+ }
+ if (usage->hid == 0x00880079) {
+ /* Touchpad off, userspace expects F23 for this */
+ hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_F23);
+ return 1;
+ }
+ return -1;
+ }
+
+ return 0;
+}
+
+static int ite_event(struct hid_device *hdev, struct hid_field *field,
+ struct hid_usage *usage, __s32 value)
+{
+ struct input_dev *input;
+
+ if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput)
+ return 0;
+
+ input = field->hidinput->input;
+
+ /*
+ * The ITE8595 always reports 0 as value for the rfkill button. Luckily
+ * it is the only button in its report, and it sends a report on
+ * release only, so receiving a report means the button was pressed.
+ */
+ if (usage->hid == HID_GD_RFKILL_BTN) {
+ input_event(input, EV_KEY, KEY_RFKILL, 1);
+ input_sync(input);
+ input_event(input, EV_KEY, KEY_RFKILL, 0);
+ input_sync(input);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int ite_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ int ret;
+
+ hid_set_drvdata(hdev, (void *)id->driver_data);
+
+ ret = hid_open_report(hdev);
+ if (ret)
+ return ret;
+
+ return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+}
+
+static const struct hid_device_id ite_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_ITE, USB_DEVICE_ID_ITE8595) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_258A, USB_DEVICE_ID_258A_6A88) },
+ /* ITE8595 USB kbd ctlr, with Synaptics touchpad connected to it. */
+ { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
+ USB_VENDOR_ID_SYNAPTICS,
+ USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_012),
+ .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT },
+ /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */
+ { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
+ USB_VENDOR_ID_SYNAPTICS,
+ USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1002),
+ .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT },
+ /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */
+ { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
+ USB_VENDOR_ID_SYNAPTICS,
+ USB_DEVICE_ID_SYNAPTICS_ACER_ONE_S1003),
+ .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT },
+ /* ITE8910 USB kbd ctlr, with Synaptics touchpad connected to it. */
+ { HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
+ USB_VENDOR_ID_SYNAPTICS,
+ USB_DEVICE_ID_SYNAPTICS_ACER_SWITCH5_017),
+ .driver_data = QUIRK_TOUCHPAD_ON_OFF_REPORT },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, ite_devices);
+
+static struct hid_driver ite_driver = {
+ .name = "itetech",
+ .id_table = ite_devices,
+ .probe = ite_probe,
+ .report_fixup = ite_report_fixup,
+ .input_mapping = ite_input_mapping,
+ .event = ite_event,
+};
+module_hid_driver(ite_driver);
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");