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Release 4.11 drivers/input/mouse/bcm5974.c

/*
 * Apple USB BCM5974 (Macbook Air and Penryn Macbook Pro) multitouch driver
 *
 * Copyright (C) 2008      Henrik Rydberg (rydberg@euromail.se)
 * Copyright (C) 2015      John Horan (knasher@gmail.com)
 *
 * The USB initialization and package decoding was made by
 * Scott Shawcroft as part of the touchd user-space driver project:
 * Copyright (C) 2008      Scott Shawcroft (scott.shawcroft@gmail.com)
 *
 * The BCM5974 driver is based on the appletouch driver:
 * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
 * Copyright (C) 2005      Johannes Berg (johannes@sipsolutions.net)
 * Copyright (C) 2005      Stelian Pop (stelian@popies.net)
 * Copyright (C) 2005      Frank Arnold (frank@scirocco-5v-turbo.de)
 * Copyright (C) 2005      Peter Osterlund (petero2@telia.com)
 * Copyright (C) 2005      Michael Hanselmann (linux-kernel@hansmi.ch)
 * Copyright (C) 2006      Nicolas Boichat (nicolas@boichat.ch)
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/usb/input.h>
#include <linux/hid.h>
#include <linux/mutex.h>
#include <linux/input/mt.h>


#define USB_VENDOR_ID_APPLE		0x05ac

/* MacbookAir, aka wellspring */

#define USB_DEVICE_ID_APPLE_WELLSPRING_ANSI	0x0223

#define USB_DEVICE_ID_APPLE_WELLSPRING_ISO	0x0224

#define USB_DEVICE_ID_APPLE_WELLSPRING_JIS	0x0225
/* MacbookProPenryn, aka wellspring2 */

#define USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI	0x0230

#define USB_DEVICE_ID_APPLE_WELLSPRING2_ISO	0x0231

#define USB_DEVICE_ID_APPLE_WELLSPRING2_JIS	0x0232
/* Macbook5,1 (unibody), aka wellspring3 */

#define USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI	0x0236

#define USB_DEVICE_ID_APPLE_WELLSPRING3_ISO	0x0237

#define USB_DEVICE_ID_APPLE_WELLSPRING3_JIS	0x0238
/* MacbookAir3,2 (unibody), aka wellspring5 */

#define USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI	0x023f

#define USB_DEVICE_ID_APPLE_WELLSPRING4_ISO	0x0240

#define USB_DEVICE_ID_APPLE_WELLSPRING4_JIS	0x0241
/* MacbookAir3,1 (unibody), aka wellspring4 */

#define USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI	0x0242

#define USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO	0x0243

#define USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS	0x0244
/* Macbook8 (unibody, March 2011) */

#define USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI	0x0245

#define USB_DEVICE_ID_APPLE_WELLSPRING5_ISO	0x0246

#define USB_DEVICE_ID_APPLE_WELLSPRING5_JIS	0x0247
/* MacbookAir4,1 (unibody, July 2011) */

#define USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI	0x0249

#define USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO	0x024a

#define USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS	0x024b
/* MacbookAir4,2 (unibody, July 2011) */

#define USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI	0x024c

#define USB_DEVICE_ID_APPLE_WELLSPRING6_ISO	0x024d

#define USB_DEVICE_ID_APPLE_WELLSPRING6_JIS	0x024e
/* Macbook8,2 (unibody) */

#define USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI	0x0252

#define USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO	0x0253

#define USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS	0x0254
/* MacbookPro10,1 (unibody, June 2012) */

#define USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI	0x0262

#define USB_DEVICE_ID_APPLE_WELLSPRING7_ISO	0x0263

#define USB_DEVICE_ID_APPLE_WELLSPRING7_JIS	0x0264
/* MacbookPro10,2 (unibody, October 2012) */

#define USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI	0x0259

#define USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO	0x025a

#define USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS	0x025b
/* MacbookAir6,2 (unibody, June 2013) */

#define USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI	0x0290

#define USB_DEVICE_ID_APPLE_WELLSPRING8_ISO	0x0291

#define USB_DEVICE_ID_APPLE_WELLSPRING8_JIS	0x0292
/* MacbookPro12,1 (2015) */

#define USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI	0x0272

#define USB_DEVICE_ID_APPLE_WELLSPRING9_ISO	0x0273

#define USB_DEVICE_ID_APPLE_WELLSPRING9_JIS	0x0274


#define BCM5974_DEVICE(prod) {                                       \
        .match_flags = (USB_DEVICE_ID_MATCH_DEVICE |            \
                        USB_DEVICE_ID_MATCH_INT_CLASS |         \
                        USB_DEVICE_ID_MATCH_INT_PROTOCOL),      \
        .idVendor = USB_VENDOR_ID_APPLE,                        \
        .idProduct = (prod),                                    \
        .bInterfaceClass = USB_INTERFACE_CLASS_HID,             \
        .bInterfaceProtocol = USB_INTERFACE_PROTOCOL_MOUSE      \
}

/* table of devices that work with this driver */

static const struct usb_device_id bcm5974_table[] = {
	/* MacbookAir1.1 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING_JIS),
	/* MacbookProPenryn */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING2_JIS),
	/* Macbook5,1 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING3_JIS),
	/* MacbookAir3,2 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4_JIS),
	/* MacbookAir3,1 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS),
	/* MacbookPro8 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5_JIS),
	/* MacbookAir4,1 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS),
	/* MacbookAir4,2 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING6_JIS),
	/* MacbookPro8,2 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS),
	/* MacbookPro10,1 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7_JIS),
	/* MacbookPro10,2 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS),
	/* MacbookAir6,2 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING8_JIS),
	/* MacbookPro12,1 */
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_ISO),
	BCM5974_DEVICE(USB_DEVICE_ID_APPLE_WELLSPRING9_JIS),
	/* Terminating entry */
	{}
};
MODULE_DEVICE_TABLE(usb, bcm5974_table);

MODULE_AUTHOR("Henrik Rydberg");
MODULE_DESCRIPTION("Apple USB BCM5974 multitouch driver");
MODULE_LICENSE("GPL");


#define dprintk(level, format, a...)\
	{ if (debug >= level) printk(KERN_DEBUG format, ##a); }


static int debug = 1;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Activate debugging output");

/* button data structure */

struct bt_data {
	
u8 unknown1;		/* constant */
	
u8 button;		/* left button */
	
u8 rel_x;		/* relative x coordinate */
	
u8 rel_y;		/* relative y coordinate */
};

/* trackpad header types */

enum tp_type {
	
TYPE1,			/* plain trackpad */
	
TYPE2,			/* button integrated in trackpad */
	
TYPE3,			/* additional header fields since June 2013 */
	
TYPE4			/* additional header field for pressure data */
};

/* trackpad finger data offsets, le16-aligned */

#define HEADER_TYPE1		(13 * sizeof(__le16))

#define HEADER_TYPE2		(15 * sizeof(__le16))

#define HEADER_TYPE3		(19 * sizeof(__le16))

#define HEADER_TYPE4		(23 * sizeof(__le16))

/* trackpad button data offsets */

#define BUTTON_TYPE1		0

#define BUTTON_TYPE2		15

#define BUTTON_TYPE3		23

#define BUTTON_TYPE4		31

/* list of device capability bits */

#define HAS_INTEGRATED_BUTTON	1

/* trackpad finger data block size */

#define FSIZE_TYPE1		(14 * sizeof(__le16))

#define FSIZE_TYPE2		(14 * sizeof(__le16))

#define FSIZE_TYPE3		(14 * sizeof(__le16))

#define FSIZE_TYPE4		(15 * sizeof(__le16))

/* offset from header to finger struct */

#define DELTA_TYPE1		(0 * sizeof(__le16))

#define DELTA_TYPE2		(0 * sizeof(__le16))

#define DELTA_TYPE3		(0 * sizeof(__le16))

#define DELTA_TYPE4		(1 * sizeof(__le16))

/* usb control message mode switch data */

#define USBMSG_TYPE1		8, 0x300, 0, 0, 0x1, 0x8

#define USBMSG_TYPE2		8, 0x300, 0, 0, 0x1, 0x8

#define USBMSG_TYPE3		8, 0x300, 0, 0, 0x1, 0x8

#define USBMSG_TYPE4		2, 0x302, 2, 1, 0x1, 0x0

/* Wellspring initialization constants */

#define BCM5974_WELLSPRING_MODE_READ_REQUEST_ID		1

#define BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID	9

/* trackpad finger structure, le16-aligned */

struct tp_finger {
	
__le16 origin;		/* zero when switching track finger */
	
__le16 abs_x;		/* absolute x coodinate */
	
__le16 abs_y;		/* absolute y coodinate */
	
__le16 rel_x;		/* relative x coodinate */
	
__le16 rel_y;		/* relative y coodinate */
	
__le16 tool_major;	/* tool area, major axis */
	
__le16 tool_minor;	/* tool area, minor axis */
	
__le16 orientation;	/* 16384 when point, else 15 bit angle */
	
__le16 touch_major;	/* touch area, major axis */
	
__le16 touch_minor;	/* touch area, minor axis */
	
__le16 unused[2];	/* zeros */
	
__le16 pressure;	/* pressure on forcetouch touchpad */
	
__le16 multi;		/* one finger: varies, more fingers: constant */
} __attribute__((packed,aligned(2)));

/* trackpad finger data size, empirically at least ten fingers */

#define MAX_FINGERS		16

#define MAX_FINGER_ORIENTATION	16384

/* device-specific parameters */

struct bcm5974_param {
	
int snratio;		/* signal-to-noise ratio */
	
int min;		/* device minimum reading */
	
int max;		/* device maximum reading */
};

/* device-specific configuration */

struct bcm5974_config {
	


int ansi, iso, jis;	/* the product id of this device */
	
int caps;		/* device capability bitmask */
	
int bt_ep;		/* the endpoint of the button interface */
	
int bt_datalen;		/* data length of the button interface */
	
int tp_ep;		/* the endpoint of the trackpad interface */
	
enum tp_type tp_type;	/* type of trackpad interface */
	
int tp_header;		/* bytes in header block */
	
int tp_datalen;		/* data length of the trackpad interface */
	
int tp_button;		/* offset to button data */
	
int tp_fsize;		/* bytes in single finger block */
	
int tp_delta;		/* offset from header to finger struct */
	
int um_size;		/* usb control message length */
	
int um_req_val;		/* usb control message value */
	
int um_req_idx;		/* usb control message index */
	
int um_switch_idx;	/* usb control message mode switch index */
	
int um_switch_on;	/* usb control message mode switch on */
	
int um_switch_off;	/* usb control message mode switch off */
	
struct bcm5974_param p;	/* finger pressure limits */
	
struct bcm5974_param w;	/* finger width limits */
	
struct bcm5974_param x;	/* horizontal limits */
	
struct bcm5974_param y;	/* vertical limits */
	
struct bcm5974_param o;	/* orientation limits */
};

/* logical device structure */

struct bcm5974 {
	
char phys[64];
	
struct usb_device *udev;	/* usb device */
	
struct usb_interface *intf;	/* our interface */
	
struct input_dev *input;	/* input dev */
	
struct bcm5974_config cfg;	/* device configuration */
	
struct mutex pm_mutex;		/* serialize access to open/suspend */
	
int opened;			/* 1: opened, 0: closed */
	
struct urb *bt_urb;		/* button usb request block */
	
struct bt_data *bt_data;	/* button transferred data */
	
struct urb *tp_urb;		/* trackpad usb request block */
	
u8 *tp_data;			/* trackpad transferred data */
	
const struct tp_finger *index[MAX_FINGERS];	/* finger index data */
	
struct input_mt_pos pos[MAX_FINGERS];		/* position array */
	
int slots[MAX_FINGERS];				/* slot assignments */
};

/* trackpad finger block data, le16-aligned */

static const struct tp_finger *get_tp_finger(const struct bcm5974 *dev, int i) { const struct bcm5974_config *c = &dev->cfg; u8 *f_base = dev->tp_data + c->tp_header + c->tp_delta; return (const struct tp_finger *)(f_base + i * c->tp_fsize); }

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#define DATAFORMAT(type) \ type, \ HEADER_##type, \ HEADER_##type + (MAX_FINGERS) * (FSIZE_##type), \ BUTTON_##type, \ FSIZE_##type, \ DELTA_##type, \ USBMSG_##type /* logical signal quality */ #define SN_PRESSURE 45 /* pressure signal-to-noise ratio */ #define SN_WIDTH 25 /* width signal-to-noise ratio */ #define SN_COORD 250 /* coordinate signal-to-noise ratio */ #define SN_ORIENT 10 /* orientation signal-to-noise ratio */ /* device constants */ static const struct bcm5974_config bcm5974_config_table[] = { { USB_DEVICE_ID_APPLE_WELLSPRING_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING_ISO, USB_DEVICE_ID_APPLE_WELLSPRING_JIS, 0, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE1), { SN_PRESSURE, 0, 256 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4824, 5342 }, { SN_COORD, -172, 5820 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS, 0, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE1), { SN_PRESSURE, 0, 256 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4824, 4824 }, { SN_COORD, -172, 4290 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4460, 5166 }, { SN_COORD, -75, 6700 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4620, 5140 }, { SN_COORD, -150, 6600 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4616, 5112 }, { SN_COORD, -142, 5234 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4415, 5050 }, { SN_COORD, -55, 6680 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4620, 5140 }, { SN_COORD, -150, 6600 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4750, 5280 }, { SN_COORD, -150, 6730 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4620, 5140 }, { SN_COORD, -150, 6600 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4750, 5280 }, { SN_COORD, -150, 6730 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS, HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, DATAFORMAT(TYPE2), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4750, 5280 }, { SN_COORD, -150, 6730 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS, HAS_INTEGRATED_BUTTON, 0, sizeof(struct bt_data), 0x83, DATAFORMAT(TYPE3), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4620, 5140 }, { SN_COORD, -150, 6600 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI, USB_DEVICE_ID_APPLE_WELLSPRING9_ISO, USB_DEVICE_ID_APPLE_WELLSPRING9_JIS, HAS_INTEGRATED_BUTTON, 0, sizeof(struct bt_data), 0x83, DATAFORMAT(TYPE4), { SN_PRESSURE, 0, 300 }, { SN_WIDTH, 0, 2048 }, { SN_COORD, -4828, 5345 }, { SN_COORD, -203, 6803 }, { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, {} }; /* return the device-specific configuration by device */
static const struct bcm5974_config *bcm5974_get_config(struct usb_device *udev) { u16 id = le16_to_cpu(udev->descriptor.idProduct); const struct bcm5974_config *cfg; for (cfg = bcm5974_config_table; cfg->ansi; ++cfg) if (cfg->ansi == id || cfg->iso == id || cfg->jis == id) return cfg; return bcm5974_config_table; }

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/* convert 16-bit little endian to signed integer */
static inline int raw2int(__le16 x) { return (signed short)le16_to_cpu(x); }

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static void set_abs(struct input_dev *input, unsigned int code, const struct bcm5974_param *p) { int fuzz = p->snratio ? (p->max - p->min) / p->snratio : 0; input_set_abs_params(input, code, p->min, p->max, fuzz, 0); }

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Total63100.00%2100.00%

/* setup which logical events to report */
static void setup_events_to_report(struct input_dev *input_dev, const struct bcm5974_config *cfg) { __set_bit(EV_ABS, input_dev->evbit); /* for synaptics only */ input_set_abs_params(input_dev, ABS_PRESSURE, 0, 256, 5, 0); input_set_abs_params(input_dev, ABS_TOOL_WIDTH, 0, 16, 0, 0); /* finger touch area */ set_abs(input_dev, ABS_MT_TOUCH_MAJOR, &cfg->w); set_abs(input_dev, ABS_MT_TOUCH_MINOR, &cfg->w); /* finger approach area */ set_abs(input_dev, ABS_MT_WIDTH_MAJOR, &cfg->w); set_abs(input_dev, ABS_MT_WIDTH_MINOR, &cfg->w); /* finger orientation */ set_abs(input_dev, ABS_MT_ORIENTATION, &cfg->o); /* finger position */ set_abs(input_dev, ABS_MT_POSITION_X, &cfg->x); set_abs(input_dev, ABS_MT_POSITION_Y, &cfg->y); __set_bit(EV_KEY, input_dev->evbit); __set_bit(BTN_LEFT, input_dev->keybit); if (cfg->caps & HAS_INTEGRATED_BUTTON) __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); input_mt_init_slots(input_dev, MAX_FINGERS, INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK); }

Contributors

PersonTokensPropCommitsCommitProp
Henrik Rydberg17691.19%583.33%
Jussi Pakkanen178.81%116.67%
Total193100.00%6100.00%

/* report button data as logical button state */
static int report_bt_state(struct bcm5974 *dev, int size) { if (size != sizeof(struct bt_data)) return -EIO; dprintk(7, "bcm5974: button data: %x %x %x %x\n", dev->bt_data->unknown1, dev->bt_data->button, dev->bt_data->rel_x, dev->bt_data->rel_y); input_report_key(dev->input, BTN_LEFT, dev->bt_data->button); input_sync(dev->input); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Henrik Rydberg84100.00%2100.00%
Total84100.00%2100.00%


static void report_finger_data(struct input_dev *input, int slot, const struct input_mt_pos *pos, const struct tp_finger *f) { input_mt_slot(input, slot); input_mt_report_slot_state(input, MT_TOOL_FINGER, true); input_report_abs(input, ABS_MT_TOUCH_MAJOR, raw2int(f->touch_major) << 1); input_report_abs(input, ABS_MT_TOUCH_MINOR, raw2int(f->touch_minor) << 1); input_report_abs(input, ABS_MT_WIDTH_MAJOR, raw2int(f->tool_major) << 1); input_report_abs(input, ABS_MT_WIDTH_MINOR, raw2int(f->tool_minor) << 1); input_report_abs(input, ABS_MT_ORIENTATION, MAX_FINGER_ORIENTATION - raw2int(f->orientation)); input_report_abs(input, ABS_MT_POSITION_X, pos->x); input_report_abs(input, ABS_MT_POSITION_Y, pos->y); }

Contributors

PersonTokensPropCommitsCommitProp
Henrik Rydberg144100.00%4100.00%
Total144100.00%4100.00%


static void report_synaptics_data(struct input_dev *input, const struct bcm5974_config *cfg, const struct tp_finger *f, int raw_n) { int abs_p = 0, abs_w = 0; if (raw_n) { int p = raw2int(f->touch_major); int w = raw2int(f->tool_major); if (p > 0 && raw2int(f->origin)) { abs_p = clamp_val(256 * p / cfg->p.max, 0, 255); abs_w = clamp_val(16 * w / cfg->w.max, 0, 15); } } input_report_abs(input, ABS_PRESSURE, abs_p); input_report_abs(input, ABS_TOOL_WIDTH, abs_w); }

Contributors

PersonTokensPropCommitsCommitProp
Henrik Rydberg132100.00%4100.00%
Total132100.00%4100.00%

/* report trackpad data as logical trackpad state */
static int report_tp_state(struct bcm5974 *dev, int size) { const struct bcm5974_config *c = &dev->cfg; const struct tp_finger *f; struct input_dev *input = dev->input; int raw_n, i, n = 0; if (size < c->tp_header || (size - c->tp_header) % c->tp_fsize != 0) return -EIO; raw_n = (size - c->tp_header) / c->tp_fsize; for (i = 0; i < raw_n; i++) { f = get_tp_finger(dev, i); if (raw2int(f->touch_major) == 0) continue; dev->pos[n].x = raw2int(f->abs_x); dev->pos[n].y = c->y.min + c->y.max - raw2int(f->abs_y); dev->index[n++] = f; } input_mt_assign_slots(input, dev->slots, dev->pos, n, 0); for (i = 0; i < n; i++) report_finger_data(input, dev->slots[i], &dev->pos[i], dev->index[i]); input_mt_sync_frame(input);