diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/mouse/bcm5974.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/mouse/bcm5974.c | 947 |
1 files changed, 0 insertions, 947 deletions
diff --git a/ANDROID_3.4.5/drivers/input/mouse/bcm5974.c b/ANDROID_3.4.5/drivers/input/mouse/bcm5974.c deleted file mode 100644 index f9e2758b..00000000 --- a/ANDROID_3.4.5/drivers/input/mouse/bcm5974.c +++ /dev/null @@ -1,947 +0,0 @@ -/* - * Apple USB BCM5974 (Macbook Air and Penryn Macbook Pro) multitouch driver - * - * Copyright (C) 2008 Henrik Rydberg (rydberg@euromail.se) - * - * 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/init.h> -#include <linux/slab.h> -#include <linux/module.h> -#include <linux/usb/input.h> -#include <linux/hid.h> -#include <linux/mutex.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 - -#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), - /* 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 */ -}; - -/* trackpad finger data offsets, le16-aligned */ -#define FINGER_TYPE1 (13 * sizeof(__le16)) -#define FINGER_TYPE2 (15 * sizeof(__le16)) - -/* trackpad button data offsets */ -#define BUTTON_TYPE2 15 - -/* list of device capability bits */ -#define HAS_INTEGRATED_BUTTON 1 - -/* 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 size_major; /* finger size, major axis? */ - __le16 size_minor; /* finger size, minor axis? */ - __le16 orientation; /* 16384 when point, else 15 bit angle */ - __le16 force_major; /* trackpad force, major axis? */ - __le16 force_minor; /* trackpad force, minor axis? */ - __le16 unused[3]; /* zeros */ - __le16 multi; /* one finger: varies, more fingers: constant */ -} __attribute__((packed,aligned(2))); - -/* trackpad finger data size, empirically at least ten fingers */ -#define SIZEOF_FINGER sizeof(struct tp_finger) -#define SIZEOF_ALL_FINGERS (16 * SIZEOF_FINGER) -#define MAX_FINGER_ORIENTATION 16384 - -/* device-specific parameters */ -struct bcm5974_param { - int dim; /* logical dimension */ - int fuzz; /* logical noise value */ - int devmin; /* device minimum reading */ - int devmax; /* 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_offset; /* offset to trackpad finger data */ - int tp_datalen; /* data length of the trackpad interface */ - 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 */ -}; - -/* 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 */ - int fingers; /* number of fingers on trackpad */ -}; - -/* logical dimensions */ -#define DIM_PRESSURE 256 /* maximum finger pressure */ -#define DIM_WIDTH 16 /* maximum finger width */ -#define DIM_X 1280 /* maximum trackpad x value */ -#define DIM_Y 800 /* maximum trackpad y value */ - -/* logical signal quality */ -#define SN_PRESSURE 45 /* pressure signal-to-noise ratio */ -#define SN_WIDTH 100 /* width signal-to-noise ratio */ -#define SN_COORD 250 /* coordinate signal-to-noise ratio */ - -/* pressure thresholds */ -#define PRESSURE_LOW (2 * DIM_PRESSURE / SN_PRESSURE) -#define PRESSURE_HIGH (3 * PRESSURE_LOW) - -/* 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, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4824, 5342 }, - { DIM_Y, DIM_Y / SN_COORD, -172, 5820 } - }, - { - 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, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4824, 4824 }, - { DIM_Y, DIM_Y / SN_COORD, -172, 4290 } - }, - { - 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, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4460, 5166 }, - { DIM_Y, DIM_Y / SN_COORD, -75, 6700 } - }, - { - 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, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } - }, - { - 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, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4616, 5112 }, - { DIM_Y, DIM_Y / SN_COORD, -142, 5234 } - }, - { - 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, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4415, 5050 }, - { DIM_Y, DIM_Y / SN_COORD, -55, 6680 } - }, - { - 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, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } - }, - { - 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, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4750, 5280 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6730 } - }, - { - 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, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } - }, - {} -}; - -/* 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; -} - -/* convert 16-bit little endian to signed integer */ -static inline int raw2int(__le16 x) -{ - return (signed short)le16_to_cpu(x); -} - -/* scale device data to logical dimensions (asserts devmin < devmax) */ -static inline int int2scale(const struct bcm5974_param *p, int x) -{ - return x * p->dim / (p->devmax - p->devmin); -} - -/* all logical value ranges are [0,dim). */ -static inline int int2bound(const struct bcm5974_param *p, int x) -{ - int s = int2scale(p, x); - - return clamp_val(s, 0, p->dim - 1); -} - -/* 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); - - input_set_abs_params(input_dev, ABS_PRESSURE, - 0, cfg->p.dim, cfg->p.fuzz, 0); - input_set_abs_params(input_dev, ABS_TOOL_WIDTH, - 0, cfg->w.dim, cfg->w.fuzz, 0); - input_set_abs_params(input_dev, ABS_X, - 0, cfg->x.dim, cfg->x.fuzz, 0); - input_set_abs_params(input_dev, ABS_Y, - 0, cfg->y.dim, cfg->y.fuzz, 0); - - /* finger touch area */ - input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, - cfg->w.devmin, cfg->w.devmax, 0, 0); - input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, - cfg->w.devmin, cfg->w.devmax, 0, 0); - /* finger approach area */ - input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR, - cfg->w.devmin, cfg->w.devmax, 0, 0); - input_set_abs_params(input_dev, ABS_MT_WIDTH_MINOR, - cfg->w.devmin, cfg->w.devmax, 0, 0); - /* finger orientation */ - input_set_abs_params(input_dev, ABS_MT_ORIENTATION, - -MAX_FINGER_ORIENTATION, - MAX_FINGER_ORIENTATION, 0, 0); - /* finger position */ - input_set_abs_params(input_dev, ABS_MT_POSITION_X, - cfg->x.devmin, cfg->x.devmax, 0, 0); - input_set_abs_params(input_dev, ABS_MT_POSITION_Y, - cfg->y.devmin, cfg->y.devmax, 0, 0); - - __set_bit(EV_KEY, input_dev->evbit); - __set_bit(BTN_TOUCH, input_dev->keybit); - __set_bit(BTN_TOOL_FINGER, input_dev->keybit); - __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); - __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); - __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit); - __set_bit(BTN_LEFT, input_dev->keybit); - - __set_bit(INPUT_PROP_POINTER, input_dev->propbit); - if (cfg->caps & HAS_INTEGRATED_BUTTON) - __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); - - input_set_events_per_packet(input_dev, 60); -} - -/* 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; -} - -static void report_finger_data(struct input_dev *input, - const struct bcm5974_config *cfg, - const struct tp_finger *f) -{ - input_report_abs(input, ABS_MT_TOUCH_MAJOR, - raw2int(f->force_major) << 1); - input_report_abs(input, ABS_MT_TOUCH_MINOR, - raw2int(f->force_minor) << 1); - input_report_abs(input, ABS_MT_WIDTH_MAJOR, - raw2int(f->size_major) << 1); - input_report_abs(input, ABS_MT_WIDTH_MINOR, - raw2int(f->size_minor) << 1); - input_report_abs(input, ABS_MT_ORIENTATION, - MAX_FINGER_ORIENTATION - raw2int(f->orientation)); - input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x)); - input_report_abs(input, ABS_MT_POSITION_Y, - cfg->y.devmin + cfg->y.devmax - raw2int(f->abs_y)); - input_mt_sync(input); -} - -/* 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_p, raw_w, raw_x, raw_y, raw_n, i; - int ptest, origin, ibt = 0, nmin = 0, nmax = 0; - int abs_p = 0, abs_w = 0, abs_x = 0, abs_y = 0; - - if (size < c->tp_offset || (size - c->tp_offset) % SIZEOF_FINGER != 0) - return -EIO; - - /* finger data, le16-aligned */ - f = (const struct tp_finger *)(dev->tp_data + c->tp_offset); - raw_n = (size - c->tp_offset) / SIZEOF_FINGER; - - /* always track the first finger; when detached, start over */ - if (raw_n) { - - /* report raw trackpad data */ - for (i = 0; i < raw_n; i++) - report_finger_data(input, c, &f[i]); - - raw_p = raw2int(f->force_major); - raw_w = raw2int(f->size_major); - raw_x = raw2int(f->abs_x); - raw_y = raw2int(f->abs_y); - - dprintk(9, - "bcm5974: " - "raw: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n", - raw_p, raw_w, raw_x, raw_y, raw_n); - - ptest = int2bound(&c->p, raw_p); - origin = raw2int(f->origin); - - /* while tracking finger still valid, count all fingers */ - if (ptest > PRESSURE_LOW && origin) { - abs_p = ptest; - abs_w = int2bound(&c->w, raw_w); - abs_x = int2bound(&c->x, raw_x - c->x.devmin); - abs_y = int2bound(&c->y, c->y.devmax - raw_y); - while (raw_n--) { - ptest = int2bound(&c->p, - raw2int(f->force_major)); - if (ptest > PRESSURE_LOW) - nmax++; - if (ptest > PRESSURE_HIGH) - nmin++; - f++; - } - } - } - - /* set the integrated button if applicable */ - if (c->tp_type == TYPE2) - ibt = raw2int(dev->tp_data[BUTTON_TYPE2]); - - if (dev->fingers < nmin) - dev->fingers = nmin; - if (dev->fingers > nmax) - dev->fingers = nmax; - - input_report_key(input, BTN_TOUCH, dev->fingers > 0); - input_report_key(input, BTN_TOOL_FINGER, dev->fingers == 1); - input_report_key(input, BTN_TOOL_DOUBLETAP, dev->fingers == 2); - input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers == 3); - input_report_key(input, BTN_TOOL_QUADTAP, dev->fingers > 3); - - input_report_abs(input, ABS_PRESSURE, abs_p); - input_report_abs(input, ABS_TOOL_WIDTH, abs_w); - - if (abs_p) { - input_report_abs(input, ABS_X, abs_x); - input_report_abs(input, ABS_Y, abs_y); - - dprintk(8, - "bcm5974: abs: p: %+05d w: %+05d x: %+05d y: %+05d " - "nmin: %d nmax: %d n: %d ibt: %d\n", abs_p, abs_w, - abs_x, abs_y, nmin, nmax, dev->fingers, ibt); - - } - - /* type 2 reports button events via ibt only */ - if (c->tp_type == TYPE2) - input_report_key(input, BTN_LEFT, ibt); - - input_sync(input); - - return 0; -} - -/* Wellspring initialization constants */ -#define BCM5974_WELLSPRING_MODE_READ_REQUEST_ID 1 -#define BCM5974_WELLSPRING_MODE_WRITE_REQUEST_ID 9 -#define BCM5974_WELLSPRING_MODE_REQUEST_VALUE 0x300 -#define BCM5974_WELLSPRING_MODE_REQUEST_INDEX 0 -#define BCM5974_WELLSPRING_MODE_VENDOR_VALUE 0x01 -#define BCM5974_WELLSPRING_MODE_NORMAL_VALUE 0x08 - -static int bcm5974_wellspring_mode(struct bcm5974 *dev, bool on) -{ - char *data = kmalloc(8, GFP_KERNEL); - int retval = 0, size; - - if (!data) { - err("bcm5974: out of memory"); - retval = -ENOMEM; - goto out; - } - - /* read configuration */ - size = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0), - BCM5974_WELLSPRING_MODE_READ_REQUEST_ID, - USB_DIR_IN | 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 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 - * receive 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) -{ - int error; - - error = bcm5974_wellspring_mode(dev, true); - if (error) { - dprintk(1, "bcm5974: mode switch failed\n"); - goto err_out; - } - - error = usb_submit_urb(dev->bt_urb, GFP_KERNEL); - if (error) - goto err_reset_mode; - - error = usb_submit_urb(dev->tp_urb, GFP_KERNEL); - if (error) - goto err_kill_bt; - - return 0; - -err_kill_bt: - usb_kill_urb(dev->bt_urb); -err_reset_mode: - bcm5974_wellspring_mode(dev, false); -err_out: - return error; -} - -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_alloc_coherent(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_alloc_coherent(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_free_coherent(dev->udev, dev->cfg.tp_datalen, - dev->tp_data, dev->tp_urb->transfer_dma); -err_free_bt_buffer: - usb_free_coherent(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_free_coherent(dev->udev, dev->cfg.tp_datalen, - dev->tp_data, dev->tp_urb->transfer_dma); - usb_free_coherent(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, - .id_table = bcm5974_table, - .supports_autosuspend = 1, -}; - -module_usb_driver(bcm5974_driver); |