diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/mouse/appletouch.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/mouse/appletouch.c | 941 |
1 files changed, 0 insertions, 941 deletions
diff --git a/ANDROID_3.4.5/drivers/input/mouse/appletouch.c b/ANDROID_3.4.5/drivers/input/mouse/appletouch.c deleted file mode 100644 index 0acbc7d5..00000000 --- a/ANDROID_3.4.5/drivers/input/mouse/appletouch.c +++ /dev/null @@ -1,941 +0,0 @@ -/* - * Apple USB Touchpad (for post-February 2005 PowerBooks and MacBooks) driver - * - * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) - * Copyright (C) 2005-2008 Johannes Berg (johannes@sipsolutions.net) - * Copyright (C) 2005-2008 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) - * Copyright (C) 2007-2008 Sven Anders (anders@anduras.de) - * - * Thanks to Alex Harper <basilisk@foobox.net> for his inputs. - * - * 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> - -/* - * Note: We try to keep the touchpad aspect ratio while still doing only - * simple arithmetics: - * 0 <= x <= (xsensors - 1) * xfact - * 0 <= y <= (ysensors - 1) * yfact - */ -struct atp_info { - int xsensors; /* number of X sensors */ - int xsensors_17; /* 17" models have more sensors */ - int ysensors; /* number of Y sensors */ - int xfact; /* X multiplication factor */ - int yfact; /* Y multiplication factor */ - int datalen; /* size of USB transfers */ - void (*callback)(struct urb *); /* callback function */ -}; - -static void atp_complete_geyser_1_2(struct urb *urb); -static void atp_complete_geyser_3_4(struct urb *urb); - -static const struct atp_info fountain_info = { - .xsensors = 16, - .xsensors_17 = 26, - .ysensors = 16, - .xfact = 64, - .yfact = 43, - .datalen = 81, - .callback = atp_complete_geyser_1_2, -}; - -static const struct atp_info geyser1_info = { - .xsensors = 16, - .xsensors_17 = 26, - .ysensors = 16, - .xfact = 64, - .yfact = 43, - .datalen = 81, - .callback = atp_complete_geyser_1_2, -}; - -static const struct atp_info geyser2_info = { - .xsensors = 15, - .xsensors_17 = 20, - .ysensors = 9, - .xfact = 64, - .yfact = 43, - .datalen = 64, - .callback = atp_complete_geyser_1_2, -}; - -static const struct atp_info geyser3_info = { - .xsensors = 20, - .ysensors = 10, - .xfact = 64, - .yfact = 64, - .datalen = 64, - .callback = atp_complete_geyser_3_4, -}; - -static const struct atp_info geyser4_info = { - .xsensors = 20, - .ysensors = 10, - .xfact = 64, - .yfact = 64, - .datalen = 64, - .callback = atp_complete_geyser_3_4, -}; - -#define ATP_DEVICE(prod, info) \ -{ \ - .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \ - USB_DEVICE_ID_MATCH_INT_CLASS | \ - USB_DEVICE_ID_MATCH_INT_PROTOCOL, \ - .idVendor = 0x05ac, /* Apple */ \ - .idProduct = (prod), \ - .bInterfaceClass = 0x03, \ - .bInterfaceProtocol = 0x02, \ - .driver_info = (unsigned long) &info, \ -} - -/* - * Table of devices (Product IDs) that work with this driver. - * (The names come from Info.plist in AppleUSBTrackpad.kext, - * According to Info.plist Geyser IV is the same as Geyser III.) - */ - -static struct usb_device_id atp_table[] = { - /* PowerBooks Feb 2005, iBooks G4 */ - ATP_DEVICE(0x020e, fountain_info), /* FOUNTAIN ANSI */ - ATP_DEVICE(0x020f, fountain_info), /* FOUNTAIN ISO */ - ATP_DEVICE(0x030a, fountain_info), /* FOUNTAIN TP ONLY */ - ATP_DEVICE(0x030b, geyser1_info), /* GEYSER 1 TP ONLY */ - - /* PowerBooks Oct 2005 */ - ATP_DEVICE(0x0214, geyser2_info), /* GEYSER 2 ANSI */ - ATP_DEVICE(0x0215, geyser2_info), /* GEYSER 2 ISO */ - ATP_DEVICE(0x0216, geyser2_info), /* GEYSER 2 JIS */ - - /* Core Duo MacBook & MacBook Pro */ - ATP_DEVICE(0x0217, geyser3_info), /* GEYSER 3 ANSI */ - ATP_DEVICE(0x0218, geyser3_info), /* GEYSER 3 ISO */ - ATP_DEVICE(0x0219, geyser3_info), /* GEYSER 3 JIS */ - - /* Core2 Duo MacBook & MacBook Pro */ - ATP_DEVICE(0x021a, geyser4_info), /* GEYSER 4 ANSI */ - ATP_DEVICE(0x021b, geyser4_info), /* GEYSER 4 ISO */ - ATP_DEVICE(0x021c, geyser4_info), /* GEYSER 4 JIS */ - - /* Core2 Duo MacBook3,1 */ - ATP_DEVICE(0x0229, geyser4_info), /* GEYSER 4 HF ANSI */ - ATP_DEVICE(0x022a, geyser4_info), /* GEYSER 4 HF ISO */ - ATP_DEVICE(0x022b, geyser4_info), /* GEYSER 4 HF JIS */ - - /* Terminating entry */ - { } -}; -MODULE_DEVICE_TABLE(usb, atp_table); - -/* maximum number of sensors */ -#define ATP_XSENSORS 26 -#define ATP_YSENSORS 16 - -/* amount of fuzz this touchpad generates */ -#define ATP_FUZZ 16 - -/* maximum pressure this driver will report */ -#define ATP_PRESSURE 300 - -/* - * Threshold for the touchpad sensors. Any change less than ATP_THRESHOLD is - * ignored. - */ -#define ATP_THRESHOLD 5 - -/* Geyser initialization constants */ -#define ATP_GEYSER_MODE_READ_REQUEST_ID 1 -#define ATP_GEYSER_MODE_WRITE_REQUEST_ID 9 -#define ATP_GEYSER_MODE_REQUEST_VALUE 0x300 -#define ATP_GEYSER_MODE_REQUEST_INDEX 0 -#define ATP_GEYSER_MODE_VENDOR_VALUE 0x04 - -/** - * enum atp_status_bits - status bit meanings - * - * These constants represent the meaning of the status bits. - * (only Geyser 3/4) - * - * @ATP_STATUS_BUTTON: The button was pressed - * @ATP_STATUS_BASE_UPDATE: Update of the base values (untouched pad) - * @ATP_STATUS_FROM_RESET: Reset previously performed - */ -enum atp_status_bits { - ATP_STATUS_BUTTON = BIT(0), - ATP_STATUS_BASE_UPDATE = BIT(2), - ATP_STATUS_FROM_RESET = BIT(4), -}; - -/* Structure to hold all of our device specific stuff */ -struct atp { - char phys[64]; - struct usb_device *udev; /* usb device */ - struct urb *urb; /* usb request block */ - u8 *data; /* transferred data */ - struct input_dev *input; /* input dev */ - const struct atp_info *info; /* touchpad model */ - bool open; - bool valid; /* are the samples valid? */ - bool size_detect_done; - bool overflow_warned; - int x_old; /* last reported x/y, */ - int y_old; /* used for smoothing */ - signed char xy_cur[ATP_XSENSORS + ATP_YSENSORS]; - signed char xy_old[ATP_XSENSORS + ATP_YSENSORS]; - int xy_acc[ATP_XSENSORS + ATP_YSENSORS]; - int idlecount; /* number of empty packets */ - struct work_struct work; -}; - -#define dbg_dump(msg, tab) \ - if (debug > 1) { \ - int __i; \ - printk(KERN_DEBUG "appletouch: %s", msg); \ - for (__i = 0; __i < ATP_XSENSORS + ATP_YSENSORS; __i++) \ - printk(" %02x", tab[__i]); \ - printk("\n"); \ - } - -#define dprintk(format, a...) \ - do { \ - if (debug) \ - printk(KERN_DEBUG format, ##a); \ - } while (0) - -MODULE_AUTHOR("Johannes Berg"); -MODULE_AUTHOR("Stelian Pop"); -MODULE_AUTHOR("Frank Arnold"); -MODULE_AUTHOR("Michael Hanselmann"); -MODULE_AUTHOR("Sven Anders"); -MODULE_DESCRIPTION("Apple PowerBook and MacBook USB touchpad driver"); -MODULE_LICENSE("GPL"); - -/* - * Make the threshold a module parameter - */ -static int threshold = ATP_THRESHOLD; -module_param(threshold, int, 0644); -MODULE_PARM_DESC(threshold, "Discard any change in data from a sensor" - " (the trackpad has many of these sensors)" - " less than this value."); - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Activate debugging output"); - -/* - * By default newer Geyser devices send standard USB HID mouse - * packets (Report ID 2). This code changes device mode, so it - * sends raw sensor reports (Report ID 5). - */ -static int atp_geyser_init(struct usb_device *udev) -{ - char *data; - int size; - int i; - int ret; - - data = kmalloc(8, GFP_KERNEL); - if (!data) { - err("Out of memory"); - return -ENOMEM; - } - - size = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), - ATP_GEYSER_MODE_READ_REQUEST_ID, - USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, - ATP_GEYSER_MODE_REQUEST_VALUE, - ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000); - - if (size != 8) { - dprintk("atp_geyser_init: read error\n"); - for (i = 0; i < 8; i++) - dprintk("appletouch[%d]: %d\n", i, data[i]); - - err("Failed to read mode from device."); - ret = -EIO; - goto out_free; - } - - /* Apply the mode switch */ - data[0] = ATP_GEYSER_MODE_VENDOR_VALUE; - - size = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), - ATP_GEYSER_MODE_WRITE_REQUEST_ID, - USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, - ATP_GEYSER_MODE_REQUEST_VALUE, - ATP_GEYSER_MODE_REQUEST_INDEX, data, 8, 5000); - - if (size != 8) { - dprintk("atp_geyser_init: write error\n"); - for (i = 0; i < 8; i++) - dprintk("appletouch[%d]: %d\n", i, data[i]); - - err("Failed to request geyser raw mode"); - ret = -EIO; - goto out_free; - } - ret = 0; -out_free: - kfree(data); - return ret; -} - -/* - * Reinitialise the device. This usually stops stream of empty packets - * coming from it. - */ -static void atp_reinit(struct work_struct *work) -{ - struct atp *dev = container_of(work, struct atp, work); - struct usb_device *udev = dev->udev; - int retval; - - dprintk("appletouch: putting appletouch to sleep (reinit)\n"); - atp_geyser_init(udev); - - retval = usb_submit_urb(dev->urb, GFP_ATOMIC); - if (retval) - err("atp_reinit: usb_submit_urb failed with error %d", - retval); -} - -static int atp_calculate_abs(int *xy_sensors, int nb_sensors, int fact, - int *z, int *fingers) -{ - int i; - /* values to calculate mean */ - int pcum = 0, psum = 0; - int is_increasing = 0; - - *fingers = 0; - - for (i = 0; i < nb_sensors; i++) { - if (xy_sensors[i] < threshold) { - if (is_increasing) - is_increasing = 0; - - continue; - } - - /* - * Makes the finger detection more versatile. For example, - * two fingers with no gap will be detected. Also, my - * tests show it less likely to have intermittent loss - * of multiple finger readings while moving around (scrolling). - * - * Changes the multiple finger detection to counting humps on - * sensors (transitions from nonincreasing to increasing) - * instead of counting transitions from low sensors (no - * finger reading) to high sensors (finger above - * sensor) - * - * - Jason Parekh <jasonparekh@gmail.com> - */ - if (i < 1 || - (!is_increasing && xy_sensors[i - 1] < xy_sensors[i])) { - (*fingers)++; - is_increasing = 1; - } else if (i > 0 && (xy_sensors[i - 1] - xy_sensors[i] > threshold)) { - is_increasing = 0; - } - - /* - * Subtracts threshold so a high sensor that just passes the - * threshold won't skew the calculated absolute coordinate. - * Fixes an issue where slowly moving the mouse would - * occasionally jump a number of pixels (slowly moving the - * finger makes this issue most apparent.) - */ - pcum += (xy_sensors[i] - threshold) * i; - psum += (xy_sensors[i] - threshold); - } - - if (psum > 0) { - *z = psum; - return pcum * fact / psum; - } - - return 0; -} - -static inline void atp_report_fingers(struct input_dev *input, int fingers) -{ - input_report_key(input, BTN_TOOL_FINGER, fingers == 1); - input_report_key(input, BTN_TOOL_DOUBLETAP, fingers == 2); - input_report_key(input, BTN_TOOL_TRIPLETAP, fingers > 2); -} - -/* Check URB status and for correct length of data package */ - -#define ATP_URB_STATUS_SUCCESS 0 -#define ATP_URB_STATUS_ERROR 1 -#define ATP_URB_STATUS_ERROR_FATAL 2 - -static int atp_status_check(struct urb *urb) -{ - struct atp *dev = urb->context; - - switch (urb->status) { - case 0: - /* success */ - break; - case -EOVERFLOW: - if (!dev->overflow_warned) { - printk(KERN_WARNING "appletouch: OVERFLOW with data " - "length %d, actual length is %d\n", - dev->info->datalen, dev->urb->actual_length); - dev->overflow_warned = true; - } - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* This urb is terminated, clean up */ - dbg("atp_complete: urb shutting down with status: %d", - urb->status); - return ATP_URB_STATUS_ERROR_FATAL; - - default: - dbg("atp_complete: nonzero urb status received: %d", - urb->status); - return ATP_URB_STATUS_ERROR; - } - - /* drop incomplete datasets */ - if (dev->urb->actual_length != dev->info->datalen) { - dprintk("appletouch: incomplete data package" - " (first byte: %d, length: %d).\n", - dev->data[0], dev->urb->actual_length); - return ATP_URB_STATUS_ERROR; - } - - return ATP_URB_STATUS_SUCCESS; -} - -static void atp_detect_size(struct atp *dev) -{ - int i; - - /* 17" Powerbooks have extra X sensors */ - for (i = dev->info->xsensors; i < ATP_XSENSORS; i++) { - if (dev->xy_cur[i]) { - - printk(KERN_INFO "appletouch: 17\" model detected.\n"); - - input_set_abs_params(dev->input, ABS_X, 0, - (dev->info->xsensors_17 - 1) * - dev->info->xfact - 1, - ATP_FUZZ, 0); - break; - } - } -} - -/* - * USB interrupt callback functions - */ - -/* Interrupt function for older touchpads: FOUNTAIN/GEYSER1/GEYSER2 */ - -static void atp_complete_geyser_1_2(struct urb *urb) -{ - int x, y, x_z, y_z, x_f, y_f; - int retval, i, j; - int key; - struct atp *dev = urb->context; - int status = atp_status_check(urb); - - if (status == ATP_URB_STATUS_ERROR_FATAL) - return; - else if (status == ATP_URB_STATUS_ERROR) - goto exit; - - /* reorder the sensors values */ - if (dev->info == &geyser2_info) { - memset(dev->xy_cur, 0, sizeof(dev->xy_cur)); - - /* - * The values are laid out like this: - * Y1, Y2, -, Y3, Y4, -, ..., X1, X2, -, X3, X4, -, ... - * '-' is an unused value. - */ - - /* read X values */ - for (i = 0, j = 19; i < 20; i += 2, j += 3) { - dev->xy_cur[i] = dev->data[j]; - dev->xy_cur[i + 1] = dev->data[j + 1]; - } - - /* read Y values */ - for (i = 0, j = 1; i < 9; i += 2, j += 3) { - dev->xy_cur[ATP_XSENSORS + i] = dev->data[j]; - dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 1]; - } - } else { - for (i = 0; i < 8; i++) { - /* X values */ - dev->xy_cur[i + 0] = dev->data[5 * i + 2]; - dev->xy_cur[i + 8] = dev->data[5 * i + 4]; - dev->xy_cur[i + 16] = dev->data[5 * i + 42]; - if (i < 2) - dev->xy_cur[i + 24] = dev->data[5 * i + 44]; - - /* Y values */ - dev->xy_cur[ATP_XSENSORS + i] = dev->data[5 * i + 1]; - dev->xy_cur[ATP_XSENSORS + i + 8] = dev->data[5 * i + 3]; - } - } - - dbg_dump("sample", dev->xy_cur); - - if (!dev->valid) { - /* first sample */ - dev->valid = true; - dev->x_old = dev->y_old = -1; - - /* Store first sample */ - memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); - - /* Perform size detection, if not done already */ - if (unlikely(!dev->size_detect_done)) { - atp_detect_size(dev); - dev->size_detect_done = 1; - goto exit; - } - } - - for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { - /* accumulate the change */ - signed char change = dev->xy_old[i] - dev->xy_cur[i]; - dev->xy_acc[i] -= change; - - /* prevent down drifting */ - if (dev->xy_acc[i] < 0) - dev->xy_acc[i] = 0; - } - - memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); - - dbg_dump("accumulator", dev->xy_acc); - - x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, - dev->info->xfact, &x_z, &x_f); - y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, - dev->info->yfact, &y_z, &y_f); - key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON; - - if (x && y) { - if (dev->x_old != -1) { - x = (dev->x_old * 3 + x) >> 2; - y = (dev->y_old * 3 + y) >> 2; - dev->x_old = x; - dev->y_old = y; - - if (debug > 1) - printk(KERN_DEBUG "appletouch: " - "X: %3d Y: %3d Xz: %3d Yz: %3d\n", - x, y, x_z, y_z); - - input_report_key(dev->input, BTN_TOUCH, 1); - input_report_abs(dev->input, ABS_X, x); - input_report_abs(dev->input, ABS_Y, y); - input_report_abs(dev->input, ABS_PRESSURE, - min(ATP_PRESSURE, x_z + y_z)); - atp_report_fingers(dev->input, max(x_f, y_f)); - } - dev->x_old = x; - dev->y_old = y; - - } else if (!x && !y) { - - dev->x_old = dev->y_old = -1; - input_report_key(dev->input, BTN_TOUCH, 0); - input_report_abs(dev->input, ABS_PRESSURE, 0); - atp_report_fingers(dev->input, 0); - - /* reset the accumulator on release */ - memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); - } - - input_report_key(dev->input, BTN_LEFT, key); - input_sync(dev->input); - - exit: - retval = usb_submit_urb(dev->urb, GFP_ATOMIC); - if (retval) - err("atp_complete: usb_submit_urb failed with result %d", - retval); -} - -/* Interrupt function for older touchpads: GEYSER3/GEYSER4 */ - -static void atp_complete_geyser_3_4(struct urb *urb) -{ - int x, y, x_z, y_z, x_f, y_f; - int retval, i, j; - int key; - struct atp *dev = urb->context; - int status = atp_status_check(urb); - - if (status == ATP_URB_STATUS_ERROR_FATAL) - return; - else if (status == ATP_URB_STATUS_ERROR) - goto exit; - - /* Reorder the sensors values: - * - * The values are laid out like this: - * -, Y1, Y2, -, Y3, Y4, -, ..., -, X1, X2, -, X3, X4, ... - * '-' is an unused value. - */ - - /* read X values */ - for (i = 0, j = 19; i < 20; i += 2, j += 3) { - dev->xy_cur[i] = dev->data[j + 1]; - dev->xy_cur[i + 1] = dev->data[j + 2]; - } - /* read Y values */ - for (i = 0, j = 1; i < 9; i += 2, j += 3) { - dev->xy_cur[ATP_XSENSORS + i] = dev->data[j + 1]; - dev->xy_cur[ATP_XSENSORS + i + 1] = dev->data[j + 2]; - } - - dbg_dump("sample", dev->xy_cur); - - /* Just update the base values (i.e. touchpad in untouched state) */ - if (dev->data[dev->info->datalen - 1] & ATP_STATUS_BASE_UPDATE) { - - dprintk("appletouch: updated base values\n"); - - memcpy(dev->xy_old, dev->xy_cur, sizeof(dev->xy_old)); - goto exit; - } - - for (i = 0; i < ATP_XSENSORS + ATP_YSENSORS; i++) { - /* calculate the change */ - dev->xy_acc[i] = dev->xy_cur[i] - dev->xy_old[i]; - - /* this is a round-robin value, so couple with that */ - if (dev->xy_acc[i] > 127) - dev->xy_acc[i] -= 256; - - if (dev->xy_acc[i] < -127) - dev->xy_acc[i] += 256; - - /* prevent down drifting */ - if (dev->xy_acc[i] < 0) - dev->xy_acc[i] = 0; - } - - dbg_dump("accumulator", dev->xy_acc); - - x = atp_calculate_abs(dev->xy_acc, ATP_XSENSORS, - dev->info->xfact, &x_z, &x_f); - y = atp_calculate_abs(dev->xy_acc + ATP_XSENSORS, ATP_YSENSORS, - dev->info->yfact, &y_z, &y_f); - key = dev->data[dev->info->datalen - 1] & ATP_STATUS_BUTTON; - - if (x && y) { - if (dev->x_old != -1) { - x = (dev->x_old * 3 + x) >> 2; - y = (dev->y_old * 3 + y) >> 2; - dev->x_old = x; - dev->y_old = y; - - if (debug > 1) - printk(KERN_DEBUG "appletouch: X: %3d Y: %3d " - "Xz: %3d Yz: %3d\n", - x, y, x_z, y_z); - - input_report_key(dev->input, BTN_TOUCH, 1); - input_report_abs(dev->input, ABS_X, x); - input_report_abs(dev->input, ABS_Y, y); - input_report_abs(dev->input, ABS_PRESSURE, - min(ATP_PRESSURE, x_z + y_z)); - atp_report_fingers(dev->input, max(x_f, y_f)); - } - dev->x_old = x; - dev->y_old = y; - - } else if (!x && !y) { - - dev->x_old = dev->y_old = -1; - input_report_key(dev->input, BTN_TOUCH, 0); - input_report_abs(dev->input, ABS_PRESSURE, 0); - atp_report_fingers(dev->input, 0); - - /* reset the accumulator on release */ - memset(dev->xy_acc, 0, sizeof(dev->xy_acc)); - } - - input_report_key(dev->input, BTN_LEFT, key); - input_sync(dev->input); - - /* - * Geysers 3/4 will continue to send packets continually after - * the first touch unless reinitialised. Do so if it's been - * idle for a while in order to avoid waking the kernel up - * several hundred times a second. - */ - - /* - * Button must not be pressed when entering suspend, - * otherwise we will never release the button. - */ - if (!x && !y && !key) { - dev->idlecount++; - if (dev->idlecount == 10) { - dev->x_old = dev->y_old = -1; - dev->idlecount = 0; - schedule_work(&dev->work); - /* Don't resubmit urb here, wait for reinit */ - return; - } - } else - dev->idlecount = 0; - - exit: - retval = usb_submit_urb(dev->urb, GFP_ATOMIC); - if (retval) - err("atp_complete: usb_submit_urb failed with result %d", - retval); -} - -static int atp_open(struct input_dev *input) -{ - struct atp *dev = input_get_drvdata(input); - - if (usb_submit_urb(dev->urb, GFP_ATOMIC)) - return -EIO; - - dev->open = 1; - return 0; -} - -static void atp_close(struct input_dev *input) -{ - struct atp *dev = input_get_drvdata(input); - - usb_kill_urb(dev->urb); - cancel_work_sync(&dev->work); - dev->open = 0; -} - -static int atp_handle_geyser(struct atp *dev) -{ - struct usb_device *udev = dev->udev; - - if (dev->info != &fountain_info) { - /* switch to raw sensor mode */ - if (atp_geyser_init(udev)) - return -EIO; - - printk(KERN_INFO "appletouch: Geyser mode initialized.\n"); - } - - return 0; -} - -static int atp_probe(struct usb_interface *iface, - const struct usb_device_id *id) -{ - struct atp *dev; - struct input_dev *input_dev; - struct usb_device *udev = interface_to_usbdev(iface); - struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - int int_in_endpointAddr = 0; - int i, error = -ENOMEM; - const struct atp_info *info = (const struct atp_info *)id->driver_info; - - /* set up the endpoint information */ - /* use only the first interrupt-in endpoint */ - iface_desc = iface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { - endpoint = &iface_desc->endpoint[i].desc; - if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { - /* we found an interrupt in endpoint */ - int_in_endpointAddr = endpoint->bEndpointAddress; - break; - } - } - if (!int_in_endpointAddr) { - err("Could not find int-in endpoint"); - return -EIO; - } - - /* allocate memory for our device state and initialize it */ - dev = kzalloc(sizeof(struct atp), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!dev || !input_dev) { - err("Out of memory"); - goto err_free_devs; - } - - dev->udev = udev; - dev->input = input_dev; - dev->info = info; - dev->overflow_warned = false; - - dev->urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->urb) - goto err_free_devs; - - dev->data = usb_alloc_coherent(dev->udev, dev->info->datalen, GFP_KERNEL, - &dev->urb->transfer_dma); - if (!dev->data) - goto err_free_urb; - - usb_fill_int_urb(dev->urb, udev, - usb_rcvintpipe(udev, int_in_endpointAddr), - dev->data, dev->info->datalen, - dev->info->callback, dev, 1); - - error = atp_handle_geyser(dev); - if (error) - goto err_free_buffer; - - usb_make_path(udev, dev->phys, sizeof(dev->phys)); - strlcat(dev->phys, "/input0", sizeof(dev->phys)); - - input_dev->name = "appletouch"; - input_dev->phys = dev->phys; - usb_to_input_id(dev->udev, &input_dev->id); - input_dev->dev.parent = &iface->dev; - - input_set_drvdata(input_dev, dev); - - input_dev->open = atp_open; - input_dev->close = atp_close; - - set_bit(EV_ABS, input_dev->evbit); - - input_set_abs_params(input_dev, ABS_X, 0, - (dev->info->xsensors - 1) * dev->info->xfact - 1, - ATP_FUZZ, 0); - input_set_abs_params(input_dev, ABS_Y, 0, - (dev->info->ysensors - 1) * dev->info->yfact - 1, - ATP_FUZZ, 0); - input_set_abs_params(input_dev, ABS_PRESSURE, 0, ATP_PRESSURE, 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_LEFT, input_dev->keybit); - - 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); - - INIT_WORK(&dev->work, atp_reinit); - - return 0; - - err_free_buffer: - usb_free_coherent(dev->udev, dev->info->datalen, - dev->data, dev->urb->transfer_dma); - err_free_urb: - usb_free_urb(dev->urb); - err_free_devs: - usb_set_intfdata(iface, NULL); - kfree(dev); - input_free_device(input_dev); - return error; -} - -static void atp_disconnect(struct usb_interface *iface) -{ - struct atp *dev = usb_get_intfdata(iface); - - usb_set_intfdata(iface, NULL); - if (dev) { - usb_kill_urb(dev->urb); - input_unregister_device(dev->input); - usb_free_coherent(dev->udev, dev->info->datalen, - dev->data, dev->urb->transfer_dma); - usb_free_urb(dev->urb); - kfree(dev); - } - printk(KERN_INFO "input: appletouch disconnected\n"); -} - -static int atp_recover(struct atp *dev) -{ - int error; - - error = atp_handle_geyser(dev); - if (error) - return error; - - if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) - return -EIO; - - return 0; -} - -static int atp_suspend(struct usb_interface *iface, pm_message_t message) -{ - struct atp *dev = usb_get_intfdata(iface); - - usb_kill_urb(dev->urb); - return 0; -} - -static int atp_resume(struct usb_interface *iface) -{ - struct atp *dev = usb_get_intfdata(iface); - - if (dev->open && usb_submit_urb(dev->urb, GFP_ATOMIC)) - return -EIO; - - return 0; -} - -static int atp_reset_resume(struct usb_interface *iface) -{ - struct atp *dev = usb_get_intfdata(iface); - - return atp_recover(dev); -} - -static struct usb_driver atp_driver = { - .name = "appletouch", - .probe = atp_probe, - .disconnect = atp_disconnect, - .suspend = atp_suspend, - .resume = atp_resume, - .reset_resume = atp_reset_resume, - .id_table = atp_table, -}; - -module_usb_driver(atp_driver); |