Add HID driver for Google Fiber TV Box remote controls
Signed-off-by: Petri Gynther <pgynther@xxxxxxxxxx>
---
drivers/hid/Kconfig | 6 ++
drivers/hid/Makefile | 1 +
drivers/hid/hid-gfrm.c | 158 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 165 insertions(+)
create mode 100644 drivers/hid/hid-gfrm.c
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 6ab51ae..7245b7f 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -257,6 +257,12 @@ config HID_GEMBIRD
---help---
Support for Gembird JPD-DualForce 2.
+config HID_GFRM
+ tristate "Google Fiber TV Box remote control support"
+ depends on HID
+ ---help---
+ Support for Google Fiber TV Box remote controls
+
config HID_HOLTEK
tristate "Holtek HID devices"
depends on USB_HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index e6441bc..571d176 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_HID_ELECOM) += hid-elecom.o
obj-$(CONFIG_HID_ELO) += hid-elo.o
obj-$(CONFIG_HID_EZKEY) += hid-ezkey.o
obj-$(CONFIG_HID_GEMBIRD) += hid-gembird.o
+obj-$(CONFIG_HID_GFRM) += hid-gfrm.o
obj-$(CONFIG_HID_GT683R) += hid-gt683r.o
obj-$(CONFIG_HID_GYRATION) += hid-gyration.o
obj-$(CONFIG_HID_HOLTEK) += hid-holtek-kbd.o
diff --git a/drivers/hid/hid-gfrm.c b/drivers/hid/hid-gfrm.c
new file mode 100644
index 0000000..4d7b7e7
--- /dev/null
+++ b/drivers/hid/hid-gfrm.c
@@ -0,0 +1,158 @@
+/*
+ * HID driver for Google Fiber TV Box remote controls
+ *
+ * Copyright (c) 2014-2015 Google Inc.
+ *
+ * Author: Petri Gynther <pgynther@xxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/input.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#define GFRM100 1 /* Google Fiber GFRM100 (Bluetooth classic) */
+#define GFRM200 2 /* Google Fiber GFRM200 (Bluetooth LE) */
+
+#define GFRM100_SEARCH_KEY_REPORT_ID 0xF7
+#define GFRM100_SEARCH_KEY_DOWN 0x0
+#define GFRM100_SEARCH_KEY_AUDIO_DATA 0x1
+#define GFRM100_SEARCH_KEY_UP 0x2
+
+static u8 search_key_dn[3] = {0x40, 0x21, 0x02};
+static u8 search_key_up[3] = {0x40, 0x00, 0x00};
+
+static int gfrm_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 hdev_type = (unsigned long) hid_get_drvdata(hdev);
+
+ if (hdev_type == GFRM100) {
+ if (usage->hid == (HID_UP_CONSUMER | 0x4)) {
+ /* Consumer.0004 -> KEY_INFO */
+ hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_INFO);
+ return 1;
+ }
+
+ if (usage->hid == (HID_UP_CONSUMER | 0x41)) {
+ /* Consumer.0041 -> KEY_OK */
+ hid_map_usage_clear(hi, usage, bit, max, EV_KEY, KEY_OK);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static int gfrm_raw_event(struct hid_device *hdev, struct hid_report *report,
+ u8 *data, int size)
+{
+ unsigned long hdev_type = (unsigned long) hid_get_drvdata(hdev);
+ int ret = 0;
+
+ if (hdev_type != GFRM100)
+ return 0;
+
+ if (size < 2 || data[0] != GFRM100_SEARCH_KEY_REPORT_ID)
+ return 0;
+
+ /*
+ * Convert GFRM100 Search key reports into Consumer.0221 (Key.Search)
+ * reports. Ignore audio data.
+ */
+ switch (data[1]) {
+ case GFRM100_SEARCH_KEY_DOWN:
+ ret = hid_report_raw_event(hdev, HID_INPUT_REPORT, search_key_dn,
+ sizeof(search_key_dn), 1);
+ break;
+
+ case GFRM100_SEARCH_KEY_AUDIO_DATA:
+ break;
+
+ case GFRM100_SEARCH_KEY_UP:
+ ret = hid_report_raw_event(hdev, HID_INPUT_REPORT, search_key_up,
+ sizeof(search_key_up), 1);
+ break;
+
+ default:
+ break;
+ }
+
+ return (ret < 0) ? ret : -1;
+}
+
+static void gfrm_input_configured(struct hid_device *hid, struct hid_input *hidinput)
+{
+ /*
+ * Enable software autorepeat with:
+ * - repeat delay: 400 msec
+ * - repeat period: 100 msec
+ */
+ input_enable_softrepeat(hidinput->input, 400, 100);
+}
+
+static int gfrm_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ int ret;
+
+ hid_set_drvdata(hdev, (void *) id->driver_data);
+
+ ret = hid_parse(hdev);
+ if (ret)
+ goto done;
+
+ if (id->driver_data == GFRM100) {
+ /*
+ * GFRM100 HID Report Descriptor does not describe the Search
+ * key reports. Thus, we need to add it manually here, so that
+ * those reports reach gfrm_raw_event() from hid_input_report().
+ */
+ if (!hid_register_report(hdev, HID_INPUT_REPORT,
+ GFRM100_SEARCH_KEY_REPORT_ID)) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ }
+
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+done:
+ return ret;
+}
+
+static void gfrm_remove(struct hid_device *hdev)
+{
+ hid_hw_stop(hdev);
+ hid_set_drvdata(hdev, NULL);
+}
+
+static const struct hid_device_id gfrm_devices[] = {
+ { HID_BLUETOOTH_DEVICE(0x58, 0x2000),
+ .driver_data = GFRM100 },
+ { HID_BLUETOOTH_DEVICE(0x471, 0x2210),
+ .driver_data = GFRM200 },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, gfrm_devices);
+
+static struct hid_driver gfrm_driver = {
+ .name = "gfrm",
+ .id_table = gfrm_devices,
+ .probe = gfrm_probe,
+ .remove = gfrm_remove,
+ .input_mapping = gfrm_input_mapping,
+ .raw_event = gfrm_raw_event,
+ .input_configured = gfrm_input_configured,
+};
+
+module_hid_driver(gfrm_driver);
+
+MODULE_AUTHOR("Petri Gynther <pgynther@xxxxxxxxxx>");
+MODULE_DESCRIPTION("Google Fiber TV Box remote control driver");
+MODULE_LICENSE("GPL");
--
2.6.0.rc2.230.g3dd15c0
--
To unsubscribe from this list: send the line "unsubscribe linux-input" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
