| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Florian Echtler | 1357 | 85.51% | 2 | 6.06% |
| Oliver Neukum | 118 | 7.44% | 3 | 9.09% |
| Greg Kroah-Hartman | 34 | 2.14% | 8 | 24.24% |
| Johan Hovold | 31 | 1.95% | 5 | 15.15% |
| Alan Stern | 17 | 1.07% | 1 | 3.03% |
| Al Viro | 6 | 0.38% | 2 | 6.06% |
| Arnd Bergmann | 5 | 0.32% | 1 | 3.03% |
| Tobias Klauser | 4 | 0.25% | 1 | 3.03% |
| Luiz Fernando N. Capitulino | 3 | 0.19% | 2 | 6.06% |
| Ingo Molnar | 3 | 0.19% | 1 | 3.03% |
| Arjan van de Ven | 3 | 0.19% | 1 | 3.03% |
| Márton Németh | 1 | 0.06% | 1 | 3.03% |
| Nishanth Aravamudan | 1 | 0.06% | 1 | 3.03% |
| Rahul Bedarkar | 1 | 0.06% | 1 | 3.03% |
| Kuninori Morimoto | 1 | 0.06% | 1 | 3.03% |
| Mariusz Kozlowski | 1 | 0.06% | 1 | 3.03% |
| Linus Torvalds | 1 | 0.06% | 1 | 3.03% |
| Total | 1587 | 33 |
// SPDX-License-Identifier: GPL-2.0+ /* Siemens ID Mouse driver v0.6 Copyright (C) 2004-5 by Florian 'Floe' Echtler <echtler@fs.tum.de> and Andreas 'ad' Deresch <aderesch@fs.tum.de> Derived from the USB Skeleton driver 1.1, Copyright (C) 2003 Greg Kroah-Hartman (greg@kroah.com) Additional information provided by Martin Reising <Martin.Reising@natural-computing.de> */ #include <linux/kernel.h> #include <linux/sched/signal.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/completion.h> #include <linux/mutex.h> #include <linux/uaccess.h> #include <linux/usb.h> /* image constants */ #define WIDTH 225 #define HEIGHT 289 #define HEADER "P5 225 289 255 " #define IMGSIZE ((WIDTH * HEIGHT) + sizeof(HEADER)-1) #define DRIVER_SHORT "idmouse" #define DRIVER_AUTHOR "Florian 'Floe' Echtler <echtler@fs.tum.de>" #define DRIVER_DESC "Siemens ID Mouse FingerTIP Sensor Driver" /* minor number for misc USB devices */ #define USB_IDMOUSE_MINOR_BASE 132 /* vendor and device IDs */ #define ID_SIEMENS 0x0681 #define ID_IDMOUSE 0x0005 #define ID_CHERRY 0x0010 /* device ID table */ static const struct usb_device_id idmouse_table[] = { {USB_DEVICE(ID_SIEMENS, ID_IDMOUSE)}, /* Siemens ID Mouse (Professional) */ {USB_DEVICE(ID_SIEMENS, ID_CHERRY )}, /* Cherry FingerTIP ID Board */ {} /* terminating null entry */ }; /* sensor commands */ #define FTIP_RESET 0x20 #define FTIP_ACQUIRE 0x21 #define FTIP_RELEASE 0x22 #define FTIP_BLINK 0x23 /* LSB of value = blink pulse width */ #define FTIP_SCROLL 0x24 #define ftip_command(dev, command, value, index) \ usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), command, \ USB_TYPE_VENDOR | USB_RECIP_ENDPOINT | USB_DIR_OUT, value, index, NULL, 0, 1000) MODULE_DEVICE_TABLE(usb, idmouse_table); /* structure to hold all of our device specific stuff */ struct usb_idmouse { struct usb_device *udev; /* save off the usb device pointer */ struct usb_interface *interface; /* the interface for this device */ unsigned char *bulk_in_buffer; /* the buffer to receive data */ size_t bulk_in_size; /* the maximum bulk packet size */ size_t orig_bi_size; /* same as above, but reported by the device */ __u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */ int open; /* if the port is open or not */ int present; /* if the device is not disconnected */ struct mutex lock; /* locks this structure */ }; /* local function prototypes */ static ssize_t idmouse_read(struct file *file, char __user *buffer, size_t count, loff_t * ppos); static int idmouse_open(struct inode *inode, struct file *file); static int idmouse_release(struct inode *inode, struct file *file); static int idmouse_probe(struct usb_interface *interface, const struct usb_device_id *id); static void idmouse_disconnect(struct usb_interface *interface); static int idmouse_suspend(struct usb_interface *intf, pm_message_t message); static int idmouse_resume(struct usb_interface *intf); /* file operation pointers */ static const struct file_operations idmouse_fops = { .owner = THIS_MODULE, .read = idmouse_read, .open = idmouse_open, .release = idmouse_release, .llseek = default_llseek, }; /* class driver information */ static struct usb_class_driver idmouse_class = { .name = "idmouse%d", .fops = &idmouse_fops, .minor_base = USB_IDMOUSE_MINOR_BASE, }; /* usb specific object needed to register this driver with the usb subsystem */ static struct usb_driver idmouse_driver = { .name = DRIVER_SHORT, .probe = idmouse_probe, .disconnect = idmouse_disconnect, .suspend = idmouse_suspend, .resume = idmouse_resume, .reset_resume = idmouse_resume, .id_table = idmouse_table, .supports_autosuspend = 1, }; static int idmouse_create_image(struct usb_idmouse *dev) { int bytes_read; int bulk_read; int result; memcpy(dev->bulk_in_buffer, HEADER, sizeof(HEADER)-1); bytes_read = sizeof(HEADER)-1; /* reset the device and set a fast blink rate */ result = ftip_command(dev, FTIP_RELEASE, 0, 0); if (result < 0) goto reset; result = ftip_command(dev, FTIP_BLINK, 1, 0); if (result < 0) goto reset; /* initialize the sensor - sending this command twice */ /* significantly reduces the rate of failed reads */ result = ftip_command(dev, FTIP_ACQUIRE, 0, 0); if (result < 0) goto reset; result = ftip_command(dev, FTIP_ACQUIRE, 0, 0); if (result < 0) goto reset; /* start the readout - sending this command twice */ /* presumably enables the high dynamic range mode */ result = ftip_command(dev, FTIP_RESET, 0, 0); if (result < 0) goto reset; result = ftip_command(dev, FTIP_RESET, 0, 0); if (result < 0) goto reset; /* loop over a blocking bulk read to get data from the device */ while (bytes_read < IMGSIZE) { result = usb_bulk_msg(dev->udev, usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr), dev->bulk_in_buffer + bytes_read, dev->bulk_in_size, &bulk_read, 5000); if (result < 0) { /* Maybe this error was caused by the increased packet size? */ /* Reset to the original value and tell userspace to retry. */ if (dev->bulk_in_size != dev->orig_bi_size) { dev->bulk_in_size = dev->orig_bi_size; result = -EAGAIN; } break; } if (signal_pending(current)) { result = -EINTR; break; } bytes_read += bulk_read; } /* check for valid image */ /* right border should be black (0x00) */ for (bytes_read = sizeof(HEADER)-1 + WIDTH-1; bytes_read < IMGSIZE; bytes_read += WIDTH) if (dev->bulk_in_buffer[bytes_read] != 0x00) return -EAGAIN; /* lower border should be white (0xFF) */ for (bytes_read = IMGSIZE-WIDTH; bytes_read < IMGSIZE-1; bytes_read++) if (dev->bulk_in_buffer[bytes_read] != 0xFF) return -EAGAIN; /* reset the device */ reset: ftip_command(dev, FTIP_RELEASE, 0, 0); /* should be IMGSIZE == 65040 */ dev_dbg(&dev->interface->dev, "read %d bytes fingerprint data\n", bytes_read); return result; } /* PM operations are nops as this driver does IO only during open() */ static int idmouse_suspend(struct usb_interface *intf, pm_message_t message) { return 0; } static int idmouse_resume(struct usb_interface *intf) { return 0; } static inline void idmouse_delete(struct usb_idmouse *dev) { kfree(dev->bulk_in_buffer); kfree(dev); } static int idmouse_open(struct inode *inode, struct file *file) { struct usb_idmouse *dev; struct usb_interface *interface; int result; /* get the interface from minor number and driver information */ interface = usb_find_interface(&idmouse_driver, iminor(inode)); if (!interface) return -ENODEV; /* get the device information block from the interface */ dev = usb_get_intfdata(interface); if (!dev) return -ENODEV; /* lock this device */ mutex_lock(&dev->lock); /* check if already open */ if (dev->open) { /* already open, so fail */ result = -EBUSY; } else { /* create a new image and check for success */ result = usb_autopm_get_interface(interface); if (result) goto error; result = idmouse_create_image(dev); usb_autopm_put_interface(interface); if (result) goto error; /* increment our usage count for the driver */ ++dev->open; /* save our object in the file's private structure */ file->private_data = dev; } error: /* unlock this device */ mutex_unlock(&dev->lock); return result; } static int idmouse_release(struct inode *inode, struct file *file) { struct usb_idmouse *dev; dev = file->private_data; if (dev == NULL) return -ENODEV; /* lock our device */ mutex_lock(&dev->lock); --dev->open; if (!dev->present) { /* the device was unplugged before the file was released */ mutex_unlock(&dev->lock); idmouse_delete(dev); } else { mutex_unlock(&dev->lock); } return 0; } static ssize_t idmouse_read(struct file *file, char __user *buffer, size_t count, loff_t * ppos) { struct usb_idmouse *dev = file->private_data; int result; /* lock this object */ mutex_lock(&dev->lock); /* verify that the device wasn't unplugged */ if (!dev->present) { mutex_unlock(&dev->lock); return -ENODEV; } result = simple_read_from_buffer(buffer, count, ppos, dev->bulk_in_buffer, IMGSIZE); /* unlock the device */ mutex_unlock(&dev->lock); return result; } static int idmouse_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_device *udev = interface_to_usbdev(interface); struct usb_idmouse *dev; struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; int result; /* check if we have gotten the data or the hid interface */ iface_desc = interface->cur_altsetting; if (iface_desc->desc.bInterfaceClass != 0x0A) return -ENODEV; if (iface_desc->desc.bNumEndpoints < 1) return -ENODEV; /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (dev == NULL) return -ENOMEM; mutex_init(&dev->lock); dev->udev = udev; dev->interface = interface; /* set up the endpoint information - use only the first bulk-in endpoint */ result = usb_find_bulk_in_endpoint(iface_desc, &endpoint); if (result) { dev_err(&interface->dev, "Unable to find bulk-in endpoint.\n"); idmouse_delete(dev); return result; } dev->orig_bi_size = usb_endpoint_maxp(endpoint); dev->bulk_in_size = 0x200; /* works _much_ faster */ dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; dev->bulk_in_buffer = kmalloc(IMGSIZE + dev->bulk_in_size, GFP_KERNEL); if (!dev->bulk_in_buffer) { idmouse_delete(dev); return -ENOMEM; } /* allow device read, write and ioctl */ dev->present = 1; /* we can register the device now, as it is ready */ usb_set_intfdata(interface, dev); result = usb_register_dev(interface, &idmouse_class); if (result) { /* something prevented us from registering this device */ dev_err(&interface->dev, "Unable to allocate minor number.\n"); idmouse_delete(dev); return result; } /* be noisy */ dev_info(&interface->dev,"%s now attached\n",DRIVER_DESC); return 0; } static void idmouse_disconnect(struct usb_interface *interface) { struct usb_idmouse *dev = usb_get_intfdata(interface); /* give back our minor */ usb_deregister_dev(interface, &idmouse_class); /* lock the device */ mutex_lock(&dev->lock); /* prevent device read, write and ioctl */ dev->present = 0; /* if the device is opened, idmouse_release will clean this up */ if (!dev->open) { mutex_unlock(&dev->lock); idmouse_delete(dev); } else { /* unlock */ mutex_unlock(&dev->lock); } dev_info(&interface->dev, "disconnected\n"); } module_usb_driver(idmouse_driver); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");
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