5340219317
Add more button and finger data to the debug output. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
780 lines
22 KiB
C
780 lines
22 KiB
C
/*
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* Apple USB BCM5974 (Macbook Air and Penryn Macbook Pro) multitouch driver
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*
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* Copyright (C) 2008 Henrik Rydberg (rydberg@euromail.se)
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*
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* The USB initialization and package decoding was made by
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* Scott Shawcroft as part of the touchd user-space driver project:
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* Copyright (C) 2008 Scott Shawcroft (scott.shawcroft@gmail.com)
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*
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* The BCM5974 driver is based on the appletouch driver:
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* Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2005 Johannes Berg (johannes@sipsolutions.net)
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* Copyright (C) 2005 Stelian Pop (stelian@popies.net)
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* Copyright (C) 2005 Frank Arnold (frank@scirocco-5v-turbo.de)
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* Copyright (C) 2005 Peter Osterlund (petero2@telia.com)
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* Copyright (C) 2005 Michael Hanselmann (linux-kernel@hansmi.ch)
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* Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/usb/input.h>
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#include <linux/hid.h>
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#include <linux/mutex.h>
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#define USB_VENDOR_ID_APPLE 0x05ac
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/* MacbookAir, aka wellspring */
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#define USB_DEVICE_ID_APPLE_WELLSPRING_ANSI 0x0223
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#define USB_DEVICE_ID_APPLE_WELLSPRING_ISO 0x0224
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#define USB_DEVICE_ID_APPLE_WELLSPRING_JIS 0x0225
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/* MacbookProPenryn, aka wellspring2 */
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#define USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI 0x0230
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#define USB_DEVICE_ID_APPLE_WELLSPRING2_ISO 0x0231
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#define USB_DEVICE_ID_APPLE_WELLSPRING2_JIS 0x0232
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/* Macbook5,1 (unibody), aka wellspring3 */
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#define USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI 0x0236
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#define USB_DEVICE_ID_APPLE_WELLSPRING3_ISO 0x0237
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#define USB_DEVICE_ID_APPLE_WELLSPRING3_JIS 0x0238
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#define BCM5974_DEVICE(prod) { \
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.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | \
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USB_DEVICE_ID_MATCH_INT_CLASS | \
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USB_DEVICE_ID_MATCH_INT_PROTOCOL), \
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.idVendor = USB_VENDOR_ID_APPLE, \
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.idProduct = (prod), \
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.bInterfaceClass = USB_INTERFACE_CLASS_HID, \
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.bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE \
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}
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/* table of devices that work with this driver */
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static const struct usb_device_id bcm5974_table[] = {
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/* MacbookAir1.1 */
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ANSI),
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ISO),
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_JIS),
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/* MacbookProPenryn */
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI),
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ISO),
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_JIS),
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/* Macbook5,1 */
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI),
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_ISO),
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BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_JIS),
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/* Terminating entry */
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{}
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};
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MODULE_DEVICE_TABLE(usb, bcm5974_table);
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MODULE_AUTHOR("Henrik Rydberg");
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MODULE_DESCRIPTION("Apple USB BCM5974 multitouch driver");
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MODULE_LICENSE("GPL");
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#define dprintk(level, format, a...)\
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{ if (debug >= level) printk(KERN_DEBUG format, ##a); }
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static int debug = 1;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Activate debugging output");
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/* button data structure */
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struct bt_data {
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u8 unknown1; /* constant */
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u8 button; /* left button */
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u8 rel_x; /* relative x coordinate */
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u8 rel_y; /* relative y coordinate */
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};
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/* trackpad header types */
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enum tp_type {
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TYPE1, /* plain trackpad */
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TYPE2 /* button integrated in trackpad */
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};
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/* trackpad finger data offsets, le16-aligned */
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#define FINGER_TYPE1 (13 * sizeof(__le16))
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#define FINGER_TYPE2 (15 * sizeof(__le16))
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/* trackpad button data offsets */
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#define BUTTON_TYPE2 15
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/* list of device capability bits */
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#define HAS_INTEGRATED_BUTTON 1
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/* trackpad finger structure, le16-aligned */
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struct tp_finger {
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__le16 origin; /* zero when switching track finger */
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__le16 abs_x; /* absolute x coodinate */
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__le16 abs_y; /* absolute y coodinate */
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__le16 rel_x; /* relative x coodinate */
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__le16 rel_y; /* relative y coodinate */
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__le16 size_major; /* finger size, major axis? */
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__le16 size_minor; /* finger size, minor axis? */
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__le16 orientation; /* 16384 when point, else 15 bit angle */
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__le16 force_major; /* trackpad force, major axis? */
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__le16 force_minor; /* trackpad force, minor axis? */
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__le16 unused[3]; /* zeros */
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__le16 multi; /* one finger: varies, more fingers: constant */
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} __attribute__((packed,aligned(2)));
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/* trackpad finger data size, empirically at least ten fingers */
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#define SIZEOF_FINGER sizeof(struct tp_finger)
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#define SIZEOF_ALL_FINGERS (16 * SIZEOF_FINGER)
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/* device-specific parameters */
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struct bcm5974_param {
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int dim; /* logical dimension */
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int fuzz; /* logical noise value */
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int devmin; /* device minimum reading */
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int devmax; /* device maximum reading */
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};
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/* device-specific configuration */
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struct bcm5974_config {
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int ansi, iso, jis; /* the product id of this device */
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int caps; /* device capability bitmask */
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int bt_ep; /* the endpoint of the button interface */
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int bt_datalen; /* data length of the button interface */
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int tp_ep; /* the endpoint of the trackpad interface */
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enum tp_type tp_type; /* type of trackpad interface */
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int tp_offset; /* offset to trackpad finger data */
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int tp_datalen; /* data length of the trackpad interface */
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struct bcm5974_param p; /* finger pressure limits */
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struct bcm5974_param w; /* finger width limits */
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struct bcm5974_param x; /* horizontal limits */
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struct bcm5974_param y; /* vertical limits */
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};
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/* logical device structure */
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struct bcm5974 {
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char phys[64];
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struct usb_device *udev; /* usb device */
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struct usb_interface *intf; /* our interface */
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struct input_dev *input; /* input dev */
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struct bcm5974_config cfg; /* device configuration */
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struct mutex pm_mutex; /* serialize access to open/suspend */
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int opened; /* 1: opened, 0: closed */
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struct urb *bt_urb; /* button usb request block */
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struct bt_data *bt_data; /* button transferred data */
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struct urb *tp_urb; /* trackpad usb request block */
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u8 *tp_data; /* trackpad transferred data */
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int fingers; /* number of fingers on trackpad */
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};
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/* logical dimensions */
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#define DIM_PRESSURE 256 /* maximum finger pressure */
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#define DIM_WIDTH 16 /* maximum finger width */
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#define DIM_X 1280 /* maximum trackpad x value */
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#define DIM_Y 800 /* maximum trackpad y value */
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/* logical signal quality */
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#define SN_PRESSURE 45 /* pressure signal-to-noise ratio */
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#define SN_WIDTH 100 /* width signal-to-noise ratio */
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#define SN_COORD 250 /* coordinate signal-to-noise ratio */
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/* pressure thresholds */
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#define PRESSURE_LOW (2 * DIM_PRESSURE / SN_PRESSURE)
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#define PRESSURE_HIGH (3 * PRESSURE_LOW)
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/* device constants */
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static const struct bcm5974_config bcm5974_config_table[] = {
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{
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USB_DEVICE_ID_APPLE_WELLSPRING_ANSI,
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USB_DEVICE_ID_APPLE_WELLSPRING_ISO,
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USB_DEVICE_ID_APPLE_WELLSPRING_JIS,
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0,
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0x84, sizeof(struct bt_data),
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0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS,
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{ DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 },
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{ DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
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{ DIM_X, DIM_X / SN_COORD, -4824, 5342 },
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{ DIM_Y, DIM_Y / SN_COORD, -172, 5820 }
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},
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{
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USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI,
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USB_DEVICE_ID_APPLE_WELLSPRING2_ISO,
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USB_DEVICE_ID_APPLE_WELLSPRING2_JIS,
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0,
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0x84, sizeof(struct bt_data),
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0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS,
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{ DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 },
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{ DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
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{ DIM_X, DIM_X / SN_COORD, -4824, 4824 },
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{ DIM_Y, DIM_Y / SN_COORD, -172, 4290 }
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},
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{
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USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI,
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USB_DEVICE_ID_APPLE_WELLSPRING3_ISO,
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USB_DEVICE_ID_APPLE_WELLSPRING3_JIS,
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HAS_INTEGRATED_BUTTON,
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0x84, sizeof(struct bt_data),
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0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS,
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{ DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 },
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{ DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 },
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{ DIM_X, DIM_X / SN_COORD, -4460, 5166 },
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{ DIM_Y, DIM_Y / SN_COORD, -75, 6700 }
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},
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{}
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};
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/* return the device-specific configuration by device */
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static const struct bcm5974_config *bcm5974_get_config(struct usb_device *udev)
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{
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u16 id = le16_to_cpu(udev->descriptor.idProduct);
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const struct bcm5974_config *cfg;
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for (cfg = bcm5974_config_table; cfg->ansi; ++cfg)
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if (cfg->ansi == id || cfg->iso == id || cfg->jis == id)
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return cfg;
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return bcm5974_config_table;
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}
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/* convert 16-bit little endian to signed integer */
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static inline int raw2int(__le16 x)
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{
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return (signed short)le16_to_cpu(x);
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}
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/* scale device data to logical dimensions (asserts devmin < devmax) */
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static inline int int2scale(const struct bcm5974_param *p, int x)
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{
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return x * p->dim / (p->devmax - p->devmin);
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}
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/* all logical value ranges are [0,dim). */
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static inline int int2bound(const struct bcm5974_param *p, int x)
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{
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int s = int2scale(p, x);
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return clamp_val(s, 0, p->dim - 1);
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}
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/* setup which logical events to report */
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static void setup_events_to_report(struct input_dev *input_dev,
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const struct bcm5974_config *cfg)
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{
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__set_bit(EV_ABS, input_dev->evbit);
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input_set_abs_params(input_dev, ABS_PRESSURE,
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0, cfg->p.dim, cfg->p.fuzz, 0);
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input_set_abs_params(input_dev, ABS_TOOL_WIDTH,
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0, cfg->w.dim, cfg->w.fuzz, 0);
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input_set_abs_params(input_dev, ABS_X,
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0, cfg->x.dim, cfg->x.fuzz, 0);
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input_set_abs_params(input_dev, ABS_Y,
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0, cfg->y.dim, cfg->y.fuzz, 0);
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__set_bit(EV_KEY, input_dev->evbit);
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__set_bit(BTN_TOUCH, input_dev->keybit);
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__set_bit(BTN_TOOL_FINGER, input_dev->keybit);
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__set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
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__set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit);
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__set_bit(BTN_TOOL_QUADTAP, input_dev->keybit);
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__set_bit(BTN_LEFT, input_dev->keybit);
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}
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/* report button data as logical button state */
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static int report_bt_state(struct bcm5974 *dev, int size)
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{
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if (size != sizeof(struct bt_data))
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return -EIO;
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dprintk(7,
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"bcm5974: button data: %x %x %x %x\n",
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dev->bt_data->unknown1, dev->bt_data->button,
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dev->bt_data->rel_x, dev->bt_data->rel_y);
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input_report_key(dev->input, BTN_LEFT, dev->bt_data->button);
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input_sync(dev->input);
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return 0;
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}
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/* report trackpad data as logical trackpad state */
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static int report_tp_state(struct bcm5974 *dev, int size)
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{
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const struct bcm5974_config *c = &dev->cfg;
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const struct tp_finger *f;
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struct input_dev *input = dev->input;
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int raw_p, raw_w, raw_x, raw_y, raw_n;
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int ptest = 0, origin = 0, ibt = 0, nmin = 0, nmax = 0;
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int abs_p = 0, abs_w = 0, abs_x = 0, abs_y = 0;
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if (size < c->tp_offset || (size - c->tp_offset) % SIZEOF_FINGER != 0)
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return -EIO;
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/* finger data, le16-aligned */
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f = (const struct tp_finger *)(dev->tp_data + c->tp_offset);
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raw_n = (size - c->tp_offset) / SIZEOF_FINGER;
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/* always track the first finger; when detached, start over */
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if (raw_n) {
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raw_p = raw2int(f->force_major);
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raw_w = raw2int(f->size_major);
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raw_x = raw2int(f->abs_x);
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raw_y = raw2int(f->abs_y);
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dprintk(9,
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"bcm5974: "
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"raw: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n",
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raw_p, raw_w, raw_x, raw_y, raw_n);
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ptest = int2bound(&c->p, raw_p);
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origin = raw2int(f->origin);
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/* set the integrated button if applicable */
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if (c->tp_type == TYPE2)
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ibt = raw2int(dev->tp_data[BUTTON_TYPE2]);
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}
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/* while tracking finger still valid, count all fingers */
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if (ptest > PRESSURE_LOW && origin) {
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abs_p = ptest;
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abs_w = int2bound(&c->w, raw_w);
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abs_x = int2bound(&c->x, raw_x - c->x.devmin);
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abs_y = int2bound(&c->y, c->y.devmax - raw_y);
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while (raw_n--) {
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ptest = int2bound(&c->p, raw2int(f->force_major));
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if (ptest > PRESSURE_LOW)
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nmax++;
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if (ptest > PRESSURE_HIGH)
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nmin++;
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f++;
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}
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}
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if (dev->fingers < nmin)
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dev->fingers = nmin;
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if (dev->fingers > nmax)
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dev->fingers = nmax;
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input_report_key(input, BTN_TOUCH, dev->fingers > 0);
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input_report_key(input, BTN_TOOL_FINGER, dev->fingers == 1);
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input_report_key(input, BTN_TOOL_DOUBLETAP, dev->fingers == 2);
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input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers == 3);
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input_report_key(input, BTN_TOOL_QUADTAP, dev->fingers > 3);
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input_report_abs(input, ABS_PRESSURE, abs_p);
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input_report_abs(input, ABS_TOOL_WIDTH, abs_w);
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if (abs_p) {
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input_report_abs(input, ABS_X, abs_x);
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input_report_abs(input, ABS_Y, abs_y);
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dprintk(8,
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"bcm5974: abs: p: %+05d w: %+05d x: %+05d y: %+05d "
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"nmin: %d nmax: %d n: %d ibt: %d\n", abs_p, abs_w,
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abs_x, abs_y, nmin, nmax, dev->fingers, ibt);
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}
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/* type 2 reports button events via ibt only */
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if (c->tp_type == TYPE2)
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input_report_key(input, BTN_LEFT, ibt);
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input_sync(input);
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return 0;
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}
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/* Wellspring initialization constants */
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#define BCM5974_WELLSPRING_MODE_READ_REQUEST_ID 1
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#define BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID 9
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#define BCM5974_WELLSPRING_MODE_REQUEST_VALUE 0x300
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#define BCM5974_WELLSPRING_MODE_REQUEST_INDEX 0
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#define BCM5974_WELLSPRING_MODE_VENDOR_VALUE 0x01
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#define BCM5974_WELLSPRING_MODE_NORMAL_VALUE 0x08
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static int bcm5974_wellspring_mode(struct bcm5974 *dev, bool on)
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{
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char *data = kmalloc(8, GFP_KERNEL);
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int retval = 0, size;
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if (!data) {
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err("bcm5974: out of memory");
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retval = -ENOMEM;
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goto out;
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}
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/* read configuration */
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size = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
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BCM5974_WELLSPRING_MODE_READ_REQUEST_ID,
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USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
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BCM5974_WELLSPRING_MODE_REQUEST_VALUE,
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|
BCM5974_WELLSPRING_MODE_REQUEST_INDEX, data, 8, 5000);
|
|
|
|
if (size != 8) {
|
|
err("bcm5974: could not read from device");
|
|
retval = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
/* apply the mode switch */
|
|
data[0] = on ?
|
|
BCM5974_WELLSPRING_MODE_VENDOR_VALUE :
|
|
BCM5974_WELLSPRING_MODE_NORMAL_VALUE;
|
|
|
|
/* write configuration */
|
|
size = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
|
|
BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID,
|
|
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
|
|
BCM5974_WELLSPRING_MODE_REQUEST_VALUE,
|
|
BCM5974_WELLSPRING_MODE_REQUEST_INDEX, data, 8, 5000);
|
|
|
|
if (size != 8) {
|
|
err("bcm5974: could not write to device");
|
|
retval = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
dprintk(2, "bcm5974: switched to %s mode.\n",
|
|
on ? "wellspring" : "normal");
|
|
|
|
out:
|
|
kfree(data);
|
|
return retval;
|
|
}
|
|
|
|
static void bcm5974_irq_button(struct urb *urb)
|
|
{
|
|
struct bcm5974 *dev = urb->context;
|
|
int error;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
break;
|
|
case -EOVERFLOW:
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
dbg("bcm5974: button urb shutting down: %d", urb->status);
|
|
return;
|
|
default:
|
|
dbg("bcm5974: button urb status: %d", urb->status);
|
|
goto exit;
|
|
}
|
|
|
|
if (report_bt_state(dev, dev->bt_urb->actual_length))
|
|
dprintk(1, "bcm5974: bad button package, length: %d\n",
|
|
dev->bt_urb->actual_length);
|
|
|
|
exit:
|
|
error = usb_submit_urb(dev->bt_urb, GFP_ATOMIC);
|
|
if (error)
|
|
err("bcm5974: button urb failed: %d", error);
|
|
}
|
|
|
|
static void bcm5974_irq_trackpad(struct urb *urb)
|
|
{
|
|
struct bcm5974 *dev = urb->context;
|
|
int error;
|
|
|
|
switch (urb->status) {
|
|
case 0:
|
|
break;
|
|
case -EOVERFLOW:
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
dbg("bcm5974: trackpad urb shutting down: %d", urb->status);
|
|
return;
|
|
default:
|
|
dbg("bcm5974: trackpad urb status: %d", urb->status);
|
|
goto exit;
|
|
}
|
|
|
|
/* control response ignored */
|
|
if (dev->tp_urb->actual_length == 2)
|
|
goto exit;
|
|
|
|
if (report_tp_state(dev, dev->tp_urb->actual_length))
|
|
dprintk(1, "bcm5974: bad trackpad package, length: %d\n",
|
|
dev->tp_urb->actual_length);
|
|
|
|
exit:
|
|
error = usb_submit_urb(dev->tp_urb, GFP_ATOMIC);
|
|
if (error)
|
|
err("bcm5974: trackpad urb failed: %d", error);
|
|
}
|
|
|
|
/*
|
|
* The Wellspring trackpad, like many recent Apple trackpads, share
|
|
* the usb device with the keyboard. Since keyboards are usually
|
|
* handled by the HID system, the device ends up being handled by two
|
|
* modules. Setting up the device therefore becomes slightly
|
|
* complicated. To enable multitouch features, a mode switch is
|
|
* required, which is usually applied via the control interface of the
|
|
* device. It can be argued where this switch should take place. In
|
|
* some drivers, like appletouch, the switch is made during
|
|
* probe. However, the hid module may also alter the state of the
|
|
* device, resulting in trackpad malfunction under certain
|
|
* circumstances. To get around this problem, there is at least one
|
|
* example that utilizes the USB_QUIRK_RESET_RESUME quirk in order to
|
|
* recieve a reset_resume request rather than the normal resume.
|
|
* Since the implementation of reset_resume is equal to mode switch
|
|
* plus start_traffic, it seems easier to always do the switch when
|
|
* starting traffic on the device.
|
|
*/
|
|
static int bcm5974_start_traffic(struct bcm5974 *dev)
|
|
{
|
|
if (bcm5974_wellspring_mode(dev, true)) {
|
|
dprintk(1, "bcm5974: mode switch failed\n");
|
|
goto error;
|
|
}
|
|
|
|
if (usb_submit_urb(dev->bt_urb, GFP_KERNEL))
|
|
goto error;
|
|
|
|
if (usb_submit_urb(dev->tp_urb, GFP_KERNEL))
|
|
goto err_kill_bt;
|
|
|
|
return 0;
|
|
|
|
err_kill_bt:
|
|
usb_kill_urb(dev->bt_urb);
|
|
error:
|
|
return -EIO;
|
|
}
|
|
|
|
static void bcm5974_pause_traffic(struct bcm5974 *dev)
|
|
{
|
|
usb_kill_urb(dev->tp_urb);
|
|
usb_kill_urb(dev->bt_urb);
|
|
bcm5974_wellspring_mode(dev, false);
|
|
}
|
|
|
|
/*
|
|
* The code below implements open/close and manual suspend/resume.
|
|
* All functions may be called in random order.
|
|
*
|
|
* Opening a suspended device fails with EACCES - permission denied.
|
|
*
|
|
* Failing a resume leaves the device resumed but closed.
|
|
*/
|
|
static int bcm5974_open(struct input_dev *input)
|
|
{
|
|
struct bcm5974 *dev = input_get_drvdata(input);
|
|
int error;
|
|
|
|
error = usb_autopm_get_interface(dev->intf);
|
|
if (error)
|
|
return error;
|
|
|
|
mutex_lock(&dev->pm_mutex);
|
|
|
|
error = bcm5974_start_traffic(dev);
|
|
if (!error)
|
|
dev->opened = 1;
|
|
|
|
mutex_unlock(&dev->pm_mutex);
|
|
|
|
if (error)
|
|
usb_autopm_put_interface(dev->intf);
|
|
|
|
return error;
|
|
}
|
|
|
|
static void bcm5974_close(struct input_dev *input)
|
|
{
|
|
struct bcm5974 *dev = input_get_drvdata(input);
|
|
|
|
mutex_lock(&dev->pm_mutex);
|
|
|
|
bcm5974_pause_traffic(dev);
|
|
dev->opened = 0;
|
|
|
|
mutex_unlock(&dev->pm_mutex);
|
|
|
|
usb_autopm_put_interface(dev->intf);
|
|
}
|
|
|
|
static int bcm5974_suspend(struct usb_interface *iface, pm_message_t message)
|
|
{
|
|
struct bcm5974 *dev = usb_get_intfdata(iface);
|
|
|
|
mutex_lock(&dev->pm_mutex);
|
|
|
|
if (dev->opened)
|
|
bcm5974_pause_traffic(dev);
|
|
|
|
mutex_unlock(&dev->pm_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm5974_resume(struct usb_interface *iface)
|
|
{
|
|
struct bcm5974 *dev = usb_get_intfdata(iface);
|
|
int error = 0;
|
|
|
|
mutex_lock(&dev->pm_mutex);
|
|
|
|
if (dev->opened)
|
|
error = bcm5974_start_traffic(dev);
|
|
|
|
mutex_unlock(&dev->pm_mutex);
|
|
|
|
return error;
|
|
}
|
|
|
|
static int bcm5974_probe(struct usb_interface *iface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *udev = interface_to_usbdev(iface);
|
|
const struct bcm5974_config *cfg;
|
|
struct bcm5974 *dev;
|
|
struct input_dev *input_dev;
|
|
int error = -ENOMEM;
|
|
|
|
/* find the product index */
|
|
cfg = bcm5974_get_config(udev);
|
|
|
|
/* allocate memory for our device state and initialize it */
|
|
dev = kzalloc(sizeof(struct bcm5974), GFP_KERNEL);
|
|
input_dev = input_allocate_device();
|
|
if (!dev || !input_dev) {
|
|
err("bcm5974: out of memory");
|
|
goto err_free_devs;
|
|
}
|
|
|
|
dev->udev = udev;
|
|
dev->intf = iface;
|
|
dev->input = input_dev;
|
|
dev->cfg = *cfg;
|
|
mutex_init(&dev->pm_mutex);
|
|
|
|
/* setup urbs */
|
|
dev->bt_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!dev->bt_urb)
|
|
goto err_free_devs;
|
|
|
|
dev->tp_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!dev->tp_urb)
|
|
goto err_free_bt_urb;
|
|
|
|
dev->bt_data = usb_buffer_alloc(dev->udev,
|
|
dev->cfg.bt_datalen, GFP_KERNEL,
|
|
&dev->bt_urb->transfer_dma);
|
|
if (!dev->bt_data)
|
|
goto err_free_urb;
|
|
|
|
dev->tp_data = usb_buffer_alloc(dev->udev,
|
|
dev->cfg.tp_datalen, GFP_KERNEL,
|
|
&dev->tp_urb->transfer_dma);
|
|
if (!dev->tp_data)
|
|
goto err_free_bt_buffer;
|
|
|
|
usb_fill_int_urb(dev->bt_urb, udev,
|
|
usb_rcvintpipe(udev, cfg->bt_ep),
|
|
dev->bt_data, dev->cfg.bt_datalen,
|
|
bcm5974_irq_button, dev, 1);
|
|
|
|
usb_fill_int_urb(dev->tp_urb, udev,
|
|
usb_rcvintpipe(udev, cfg->tp_ep),
|
|
dev->tp_data, dev->cfg.tp_datalen,
|
|
bcm5974_irq_trackpad, dev, 1);
|
|
|
|
/* create bcm5974 device */
|
|
usb_make_path(udev, dev->phys, sizeof(dev->phys));
|
|
strlcat(dev->phys, "/input0", sizeof(dev->phys));
|
|
|
|
input_dev->name = "bcm5974";
|
|
input_dev->phys = dev->phys;
|
|
usb_to_input_id(dev->udev, &input_dev->id);
|
|
/* report driver capabilities via the version field */
|
|
input_dev->id.version = cfg->caps;
|
|
input_dev->dev.parent = &iface->dev;
|
|
|
|
input_set_drvdata(input_dev, dev);
|
|
|
|
input_dev->open = bcm5974_open;
|
|
input_dev->close = bcm5974_close;
|
|
|
|
setup_events_to_report(input_dev, cfg);
|
|
|
|
error = input_register_device(dev->input);
|
|
if (error)
|
|
goto err_free_buffer;
|
|
|
|
/* save our data pointer in this interface device */
|
|
usb_set_intfdata(iface, dev);
|
|
|
|
return 0;
|
|
|
|
err_free_buffer:
|
|
usb_buffer_free(dev->udev, dev->cfg.tp_datalen,
|
|
dev->tp_data, dev->tp_urb->transfer_dma);
|
|
err_free_bt_buffer:
|
|
usb_buffer_free(dev->udev, dev->cfg.bt_datalen,
|
|
dev->bt_data, dev->bt_urb->transfer_dma);
|
|
err_free_urb:
|
|
usb_free_urb(dev->tp_urb);
|
|
err_free_bt_urb:
|
|
usb_free_urb(dev->bt_urb);
|
|
err_free_devs:
|
|
usb_set_intfdata(iface, NULL);
|
|
input_free_device(input_dev);
|
|
kfree(dev);
|
|
return error;
|
|
}
|
|
|
|
static void bcm5974_disconnect(struct usb_interface *iface)
|
|
{
|
|
struct bcm5974 *dev = usb_get_intfdata(iface);
|
|
|
|
usb_set_intfdata(iface, NULL);
|
|
|
|
input_unregister_device(dev->input);
|
|
usb_buffer_free(dev->udev, dev->cfg.tp_datalen,
|
|
dev->tp_data, dev->tp_urb->transfer_dma);
|
|
usb_buffer_free(dev->udev, dev->cfg.bt_datalen,
|
|
dev->bt_data, dev->bt_urb->transfer_dma);
|
|
usb_free_urb(dev->tp_urb);
|
|
usb_free_urb(dev->bt_urb);
|
|
kfree(dev);
|
|
}
|
|
|
|
static struct usb_driver bcm5974_driver = {
|
|
.name = "bcm5974",
|
|
.probe = bcm5974_probe,
|
|
.disconnect = bcm5974_disconnect,
|
|
.suspend = bcm5974_suspend,
|
|
.resume = bcm5974_resume,
|
|
.reset_resume = bcm5974_resume,
|
|
.id_table = bcm5974_table,
|
|
.supports_autosuspend = 1,
|
|
};
|
|
|
|
static int __init bcm5974_init(void)
|
|
{
|
|
return usb_register(&bcm5974_driver);
|
|
}
|
|
|
|
static void __exit bcm5974_exit(void)
|
|
{
|
|
usb_deregister(&bcm5974_driver);
|
|
}
|
|
|
|
module_init(bcm5974_init);
|
|
module_exit(bcm5974_exit);
|
|
|