hid-sony.c 4.7 KB
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/*
 *  HID driver for some sony "special" devices
 *
 *  Copyright (c) 1999 Andreas Gal
 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
 *  Copyright (c) 2007 Paul Walmsley
 *  Copyright (c) 2008 Jiri Slaby
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 *  Copyright (c) 2006-2008 Jiri Kosina
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 */

/*
 * 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/module.h>
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#include <linux/slab.h>
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#include <linux/usb.h>

#include "hid-ids.h"

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#define VAIO_RDESC_CONSTANT     (1 << 0)
#define SIXAXIS_CONTROLLER_USB  (1 << 1)
#define SIXAXIS_CONTROLLER_BT   (1 << 2)
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struct sony_sc {
	unsigned long quirks;
};

/* Sony Vaio VGX has wrongly mouse pointer declared as constant */
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static __u8 *sony_report_fixup(struct hid_device *hdev, __u8 *rdesc,
		unsigned int *rsize)
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{
	struct sony_sc *sc = hid_get_drvdata(hdev);

	if ((sc->quirks & VAIO_RDESC_CONSTANT) &&
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			*rsize >= 56 && rdesc[54] == 0x81 && rdesc[55] == 0x07) {
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		hid_info(hdev, "Fixing up Sony Vaio VGX report descriptor\n");
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		rdesc[55] = 0x06;
	}
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	return rdesc;
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}

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static int sixaxis_usb_output_raw_report(struct hid_device *hid, __u8 *buf,
		size_t count, unsigned char report_type)
{
	struct usb_interface *intf = to_usb_interface(hid->dev.parent);
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_host_interface *interface = intf->cur_altsetting;
	int report_id = buf[0];
	int ret;

	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
		HID_REQ_SET_REPORT,
		USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
		((report_type + 1) << 8) | report_id,
		interface->desc.bInterfaceNumber, buf, count,
		USB_CTRL_SET_TIMEOUT);

	return ret;
}

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/*
 * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
 * to "operational".  Without this, the ps3 controller will not report any
 * events.
 */
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static int sixaxis_set_operational_usb(struct hid_device *hdev)
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{
	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
	struct usb_device *dev = interface_to_usbdev(intf);
	__u16 ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
	int ret;
	char *buf = kmalloc(18, GFP_KERNEL);

	if (!buf)
		return -ENOMEM;

	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
				 HID_REQ_GET_REPORT,
				 USB_DIR_IN | USB_TYPE_CLASS |
				 USB_RECIP_INTERFACE,
				 (3 << 8) | 0xf2, ifnum, buf, 17,
				 USB_CTRL_GET_TIMEOUT);
	if (ret < 0)
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		hid_err(hdev, "can't set operational mode\n");
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	kfree(buf);

	return ret;
}

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static int sixaxis_set_operational_bt(struct hid_device *hdev)
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{
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	unsigned char buf[] = { 0xf4,  0x42, 0x03, 0x00, 0x00 };
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	return hdev->hid_output_raw_report(hdev, buf, sizeof(buf), HID_FEATURE_REPORT);
}

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static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
	int ret;
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	unsigned long quirks = id->driver_data;
	struct sony_sc *sc;

	sc = kzalloc(sizeof(*sc), GFP_KERNEL);
	if (sc == NULL) {
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		hid_err(hdev, "can't alloc sony descriptor\n");
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		return -ENOMEM;
	}

	sc->quirks = quirks;
	hid_set_drvdata(hdev, sc);
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	ret = hid_parse(hdev);
	if (ret) {
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		hid_err(hdev, "parse failed\n");
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		goto err_free;
	}

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	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
			HID_CONNECT_HIDDEV_FORCE);
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	if (ret) {
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		hid_err(hdev, "hw start failed\n");
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		goto err_free;
	}

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	if (sc->quirks & SIXAXIS_CONTROLLER_USB) {
		hdev->hid_output_raw_report = sixaxis_usb_output_raw_report;
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		ret = sixaxis_set_operational_usb(hdev);
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	}
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	else if (sc->quirks & SIXAXIS_CONTROLLER_BT)
		ret = sixaxis_set_operational_bt(hdev);
	else
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		ret = 0;

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	if (ret < 0)
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		goto err_stop;

	return 0;
err_stop:
	hid_hw_stop(hdev);
err_free:
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	kfree(sc);
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	return ret;
}

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static void sony_remove(struct hid_device *hdev)
{
	hid_hw_stop(hdev);
	kfree(hid_get_drvdata(hdev));
}

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static const struct hid_device_id sony_devices[] = {
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	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER),
		.driver_data = SIXAXIS_CONTROLLER_USB },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER),
		.driver_data = SIXAXIS_CONTROLLER_BT },
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	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE),
		.driver_data = VAIO_RDESC_CONSTANT },
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	{ }
};
MODULE_DEVICE_TABLE(hid, sony_devices);

static struct hid_driver sony_driver = {
	.name = "sony",
	.id_table = sony_devices,
	.probe = sony_probe,
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	.remove = sony_remove,
	.report_fixup = sony_report_fixup,
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};

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static int __init sony_init(void)
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{
	return hid_register_driver(&sony_driver);
}

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static void __exit sony_exit(void)
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{
	hid_unregister_driver(&sony_driver);
}

module_init(sony_init);
module_exit(sony_exit);
MODULE_LICENSE("GPL");