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path: root/drivers/staging/frontier/alphatrack.c
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Diffstat (limited to 'drivers/staging/frontier/alphatrack.c')
-rw-r--r--drivers/staging/frontier/alphatrack.c383
1 files changed, 213 insertions, 170 deletions
diff --git a/drivers/staging/frontier/alphatrack.c b/drivers/staging/frontier/alphatrack.c
index 6136e3f8762d..bcba17eae926 100644
--- a/drivers/staging/frontier/alphatrack.c
+++ b/drivers/staging/frontier/alphatrack.c
@@ -41,19 +41,11 @@
#include <linux/mutex.h>
#include <linux/version.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/input.h>
#include <linux/usb.h>
#include <linux/poll.h>
-#include "surface_sysfs.h"
-
-/* make this work on older kernel versions */
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
-#include "frontier_compat.h"
-#endif /* older kernel versions */
-
#include "alphatrack.h"
#define VENDOR_ID 0x165b
@@ -62,19 +54,18 @@
#ifdef CONFIG_USB_DYNAMIC_MINORS
#define USB_ALPHATRACK_MINOR_BASE 0
#else
-// FIXME 176 - is another driver's minor - apply for that
-// #define USB_ALPHATRACK_MINOR_BASE 177
+/* FIXME 176 - is another driver's minor - apply for that */
#define USB_ALPHATRACK_MINOR_BASE 176
#endif
/* table of devices that work with this driver */
-static struct usb_device_id usb_alphatrack_table [] = {
- { USB_DEVICE(VENDOR_ID, PRODUCT_ID) },
- { } /* Terminating entry */
+static struct usb_device_id usb_alphatrack_table[] = {
+ {USB_DEVICE(VENDOR_ID, PRODUCT_ID)},
+ {} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, usb_alphatrack_table);
-MODULE_VERSION("0.40");
+MODULE_VERSION("0.41");
MODULE_AUTHOR("Mike Taht <m@taht.net>");
MODULE_DESCRIPTION("Alphatrack USB Driver");
MODULE_LICENSE("GPL");
@@ -93,18 +84,18 @@ MODULE_SUPPORTED_DEVICE("Frontier Designs Alphatrack Control Surface");
#define ALPHATRACK_USB_TIMEOUT 10
#define OUTPUT_CMD_SIZE 8
#define INPUT_CMD_SIZE 12
+#define ALPHATRACK_DEBUG 0
-
-static int debug = 0;
+static int debug = ALPHATRACK_DEBUG;
/* Use our own dbg macro */
-#define dbg_info(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0)
+#define dbg_info(dev, format, arg...) do \
+ { if (debug) dev_info(dev , format , ## arg); } while (0)
#define alphatrack_ocmd_info(dev, cmd, format, arg...)
#define alphatrack_icmd_info(dev, cmd, format, arg...)
-
/* Module parameters */
module_param(debug, int, S_IRUGO | S_IWUSR);
@@ -116,14 +107,14 @@ MODULE_PARM_DESC(debug, "Debug enabled or not");
static int ring_buffer_size = RING_BUFFER_SIZE;
-module_param(ring_buffer_size, int, S_IRUGO);
+module_param(ring_buffer_size, int, S_IRUGO);
MODULE_PARM_DESC(ring_buffer_size, "Read ring buffer size");
/* The write_buffer can one day contain more than one interrupt out transfer.
*/
static int write_buffer_size = WRITE_BUFFER_SIZE;
-module_param(write_buffer_size, int, S_IRUGO);
+module_param(write_buffer_size, int, S_IRUGO);
MODULE_PARM_DESC(write_buffer_size, "Write buffer size");
/*
@@ -133,55 +124,56 @@ MODULE_PARM_DESC(write_buffer_size, "Write buffer size");
static int min_interrupt_in_interval = ALPHATRACK_USB_TIMEOUT;
module_param(min_interrupt_in_interval, int, 0);
-MODULE_PARM_DESC(min_interrupt_in_interval, "Minimum interrupt in interval in ms");
+MODULE_PARM_DESC(min_interrupt_in_interval,
+ "Minimum interrupt in interval in ms");
static int min_interrupt_out_interval = ALPHATRACK_USB_TIMEOUT;
module_param(min_interrupt_out_interval, int, 0);
-MODULE_PARM_DESC(min_interrupt_out_interval, "Minimum interrupt out interval in ms");
-
-
+MODULE_PARM_DESC(min_interrupt_out_interval,
+ "Minimum interrupt out interval in ms");
/* Structure to hold all of our device specific stuff */
struct usb_alphatrack {
- struct semaphore sem; /* locks this structure */
- struct usb_interface* intf; /* save off the usb interface pointer */
- int open_count; /* number of times this port has been opened */
-
- struct alphatrack_icmd (*ring_buffer)[RING_BUFFER_SIZE]; /* just make c happy */
- struct alphatrack_ocmd (*write_buffer)[WRITE_BUFFER_SIZE]; /* just make c happy */
- unsigned int ring_head;
- unsigned int ring_tail;
-
- wait_queue_head_t read_wait;
- wait_queue_head_t write_wait;
-
- unsigned char* interrupt_in_buffer;
- unsigned char* oldi_buffer;
- struct usb_endpoint_descriptor* interrupt_in_endpoint;
- struct urb* interrupt_in_urb;
- int interrupt_in_interval;
- size_t interrupt_in_endpoint_size;
- int interrupt_in_running;
- int interrupt_in_done;
-
- char* interrupt_out_buffer;
- struct usb_endpoint_descriptor* interrupt_out_endpoint;
- struct urb* interrupt_out_urb;
- int interrupt_out_interval;
- size_t interrupt_out_endpoint_size;
- int interrupt_out_busy;
+ struct semaphore sem; /* locks this structure */
+ struct usb_interface *intf; /* save off the usb interface pointer */
+ int open_count; /* number of times this port has been opened */
+
+ /* make gcc happy */
+ struct alphatrack_icmd (*ring_buffer)[RING_BUFFER_SIZE];
+ struct alphatrack_ocmd (*write_buffer)[WRITE_BUFFER_SIZE];
+ unsigned int ring_head;
+ unsigned int ring_tail;
+
+ wait_queue_head_t read_wait;
+ wait_queue_head_t write_wait;
+
+ unsigned char *interrupt_in_buffer;
+ unsigned char *oldi_buffer;
+ struct usb_endpoint_descriptor *interrupt_in_endpoint;
+ struct urb *interrupt_in_urb;
+ int interrupt_in_interval;
+ size_t interrupt_in_endpoint_size;
+ int interrupt_in_running;
+ int interrupt_in_done;
+
+ char *interrupt_out_buffer;
+ struct usb_endpoint_descriptor *interrupt_out_endpoint;
+ struct urb *interrupt_out_urb;
+ int interrupt_out_interval;
+ size_t interrupt_out_endpoint_size;
+ int interrupt_out_busy;
atomic_t writes_pending;
- int event; /* alternate interface to events */
- int fader; /* 10 bits */
- int lights; /* 23 bits */
- unsigned char dump_state; /* 0 if disabled 1 if enabled */
- unsigned char enable; /* 0 if disabled 1 if enabled */
- unsigned char offline; /* if the device is out of range or asleep */
- unsigned char verbose; /* be verbose in error reporting */
- unsigned char last_cmd[OUTPUT_CMD_SIZE];
- unsigned char screen[32];
+ int event; /* alternate interface to events */
+ int fader; /* 10 bits */
+ int lights; /* 23 bits */
+ unsigned char dump_state; /* 0 if disabled 1 if enabled */
+ unsigned char enable; /* 0 if disabled 1 if enabled */
+ unsigned char offline; /* if the device is out of range or asleep */
+ unsigned char verbose; /* be verbose in error reporting */
+ unsigned char last_cmd[OUTPUT_CMD_SIZE];
+ unsigned char screen[32];
};
/* prevent races between open() and disconnect() */
@@ -219,7 +211,7 @@ static void usb_alphatrack_delete(struct usb_alphatrack *dev)
kfree(dev->ring_buffer);
kfree(dev->interrupt_in_buffer);
kfree(dev->interrupt_out_buffer);
- kfree(dev); // fixme oldi_buffer
+ kfree(dev); /* fixme oldi_buffer */
}
/**
@@ -234,39 +226,52 @@ static void usb_alphatrack_interrupt_in_callback(struct urb *urb)
if (urb->status) {
if (urb->status == -ENOENT ||
- urb->status == -ECONNRESET ||
- urb->status == -ESHUTDOWN) {
+ urb->status == -ECONNRESET || urb->status == -ESHUTDOWN) {
goto exit;
} else {
- dbg_info(&dev->intf->dev, "%s: nonzero status received: %d\n",
- __func__, urb->status);
- goto resubmit; /* maybe we can recover */
+ dbg_info(&dev->intf->dev,
+ "%s: nonzero status received: %d\n", __func__,
+ urb->status);
+ goto resubmit; /* maybe we can recover */
}
}
if (urb->actual_length != INPUT_CMD_SIZE) {
dev_warn(&dev->intf->dev,
- "Urb length was %d bytes!! Do something intelligent \n", urb->actual_length);
+ "Urb length was %d bytes!!"
+ "Do something intelligent \n", urb->actual_length);
} else {
- alphatrack_ocmd_info(&dev->intf->dev,&(*dev->ring_buffer)[dev->ring_tail].cmd,"%s", "bla");
- if(memcmp(dev->interrupt_in_buffer,dev->oldi_buffer,INPUT_CMD_SIZE)==0) {
- goto resubmit;
+ alphatrack_ocmd_info(&dev->intf->dev,
+ &(*dev->ring_buffer)[dev->ring_tail].cmd,
+ "%s", "bla");
+ if (memcmp
+ (dev->interrupt_in_buffer, dev->oldi_buffer,
+ INPUT_CMD_SIZE) == 0) {
+ goto resubmit;
}
- memcpy(dev->oldi_buffer,dev->interrupt_in_buffer,INPUT_CMD_SIZE);
+ memcpy(dev->oldi_buffer, dev->interrupt_in_buffer,
+ INPUT_CMD_SIZE);
#if SUPPRESS_EXTRA_OFFLINE_EVENTS
- if(dev->offline == 2 && dev->interrupt_in_buffer[1] == 0xff) { goto resubmit; }
- if(dev->offline == 1 && dev->interrupt_in_buffer[1] == 0xff) { dev->offline = 2; goto resubmit; }
+ if (dev->offline == 2 && dev->interrupt_in_buffer[1] == 0xff)
+ goto resubmit;
+ if (dev->offline == 1 && dev->interrupt_in_buffer[1] == 0xff) {
+ dev->offline = 2;
+ goto resubmit;
+ }
/* Always pass one offline event up the stack */
- if(dev->offline > 0 && dev->interrupt_in_buffer[1] != 0xff) { dev->offline = 0; }
- if(dev->offline == 0 && dev->interrupt_in_buffer[1] == 0xff) { dev->offline = 1; }
+ if (dev->offline > 0 && dev->interrupt_in_buffer[1] != 0xff)
+ dev->offline = 0;
+ if (dev->offline == 0 && dev->interrupt_in_buffer[1] == 0xff)
+ dev->offline = 1;
#endif
- dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n", __func__,dev->ring_head,dev->ring_tail);
- next_ring_head = (dev->ring_head+1) % ring_buffer_size;
+ dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n",
+ __func__, dev->ring_head, dev->ring_tail);
+ next_ring_head = (dev->ring_head + 1) % ring_buffer_size;
if (next_ring_head != dev->ring_tail) {
memcpy(&((*dev->ring_buffer)[dev->ring_head]),
- dev->interrupt_in_buffer, urb->actual_length);
+ dev->interrupt_in_buffer, urb->actual_length);
dev->ring_head = next_ring_head;
retval = 0;
memset(dev->interrupt_in_buffer, 0, urb->actual_length);
@@ -330,7 +335,7 @@ static int usb_alphatrack_open(struct inode *inode, struct file *file)
if (!interface) {
err("%s - error, can't find device for minor %d\n",
- __func__, subminor);
+ __func__, subminor);
retval = -ENODEV;
goto unlock_disconnect_exit;
}
@@ -361,11 +366,11 @@ static int usb_alphatrack_open(struct inode *inode, struct file *file)
usb_fill_int_urb(dev->interrupt_in_urb,
interface_to_usbdev(interface),
usb_rcvintpipe(interface_to_usbdev(interface),
- dev->interrupt_in_endpoint->bEndpointAddress),
+ dev->interrupt_in_endpoint->
+ bEndpointAddress),
dev->interrupt_in_buffer,
dev->interrupt_in_endpoint_size,
- usb_alphatrack_interrupt_in_callback,
- dev,
+ usb_alphatrack_interrupt_in_callback, dev,
dev->interrupt_in_interval);
dev->interrupt_in_running = 1;
@@ -375,7 +380,8 @@ static int usb_alphatrack_open(struct inode *inode, struct file *file)
retval = usb_submit_urb(dev->interrupt_in_urb, GFP_KERNEL);
if (retval) {
- dev_err(&interface->dev, "Couldn't submit interrupt_in_urb %d\n", retval);
+ dev_err(&interface->dev,
+ "Couldn't submit interrupt_in_urb %d\n", retval);
dev->interrupt_in_running = 0;
dev->open_count = 0;
goto unlock_exit;
@@ -384,7 +390,6 @@ static int usb_alphatrack_open(struct inode *inode, struct file *file)
/* save device in the file's private structure */
file->private_data = dev;
-
unlock_exit:
up(&dev->sem);
@@ -430,7 +435,9 @@ static int usb_alphatrack_release(struct inode *inode, struct file *file)
/* wait until write transfer is finished */
if (dev->interrupt_out_busy)
- wait_event_interruptible_timeout(dev->write_wait, !dev->interrupt_out_busy, 2 * HZ);
+ wait_event_interruptible_timeout(dev->write_wait,
+ !dev->interrupt_out_busy,
+ 2 * HZ);
usb_alphatrack_abort_transfers(dev);
dev->open_count = 0;
@@ -444,7 +451,7 @@ exit:
/**
* usb_alphatrack_poll
*/
-static unsigned int usb_alphatrack_poll(struct file *file, poll_table *wait)
+static unsigned int usb_alphatrack_poll(struct file *file, poll_table * wait)
{
struct usb_alphatrack *dev;
unsigned int mask = 0;
@@ -465,8 +472,8 @@ static unsigned int usb_alphatrack_poll(struct file *file, poll_table *wait)
/**
* usb_alphatrack_read
*/
-static ssize_t usb_alphatrack_read(struct file *file, char __user *buffer, size_t count,
- loff_t *ppos)
+static ssize_t usb_alphatrack_read(struct file *file, char __user *buffer,
+ size_t count, loff_t *ppos)
{
struct usb_alphatrack *dev;
int retval = 0;
@@ -493,30 +500,36 @@ static ssize_t usb_alphatrack_read(struct file *file, char __user *buffer, size_
}
while (dev->ring_head == dev->ring_tail) {
- if (file->f_flags & O_NONBLOCK) {
- retval = -EAGAIN;
- goto unlock_exit;
- }
- dev->interrupt_in_done = 0 ;
- retval = wait_event_interruptible(dev->read_wait, dev->interrupt_in_done);
- if (retval < 0) {
- goto unlock_exit;
- }
- }
-
- alphatrack_ocmd_info(&dev->intf->dev, &(*dev->ring_buffer)[dev->ring_tail].cmd, "%s", ": copying to userspace");
-
- c = 0;
- while((c < count) && (dev->ring_tail != dev->ring_head)) {
- if (copy_to_user(&buffer[c], &(*dev->ring_buffer)[dev->ring_tail], INPUT_CMD_SIZE)) {
- retval = -EFAULT;
- goto unlock_exit;
- }
- dev->ring_tail = (dev->ring_tail+1) % ring_buffer_size;
- c+=INPUT_CMD_SIZE;
- dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n", __func__,dev->ring_head,dev->ring_tail);
- }
- retval = c;
+ if (file->f_flags & O_NONBLOCK) {
+ retval = -EAGAIN;
+ goto unlock_exit;
+ }
+ dev->interrupt_in_done = 0;
+ retval =
+ wait_event_interruptible(dev->read_wait,
+ dev->interrupt_in_done);
+ if (retval < 0)
+ goto unlock_exit;
+ }
+
+ alphatrack_ocmd_info(&dev->intf->dev,
+ &(*dev->ring_buffer)[dev->ring_tail].cmd, "%s",
+ ": copying to userspace");
+
+ c = 0;
+ while ((c < count) && (dev->ring_tail != dev->ring_head)) {
+ if (copy_to_user
+ (&buffer[c], &(*dev->ring_buffer)[dev->ring_tail],
+ INPUT_CMD_SIZE)) {
+ retval = -EFAULT;
+ goto unlock_exit;
+ }
+ dev->ring_tail = (dev->ring_tail + 1) % ring_buffer_size;
+ c += INPUT_CMD_SIZE;
+ dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n",
+ __func__, dev->ring_head, dev->ring_tail);
+ }
+ retval = c;
unlock_exit:
/* unlock the device */
@@ -529,8 +542,9 @@ exit:
/**
* usb_alphatrack_write
*/
-static ssize_t usb_alphatrack_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
+static ssize_t usb_alphatrack_write(struct file *file,
+ const char __user *buffer, size_t count,
+ loff_t *ppos)
{
struct usb_alphatrack *dev;
size_t bytes_to_write;
@@ -561,19 +575,24 @@ static ssize_t usb_alphatrack_write(struct file *file, const char __user *buffer
retval = -EAGAIN;
goto unlock_exit;
}
- retval = wait_event_interruptible(dev->write_wait, !dev->interrupt_out_busy);
- if (retval < 0) {
+ retval =
+ wait_event_interruptible(dev->write_wait,
+ !dev->interrupt_out_busy);
+ if (retval < 0)
goto unlock_exit;
- }
}
/* write the data into interrupt_out_buffer from userspace */
- /* FIXME - if you write more than 12 bytes this breaks */
- bytes_to_write = min(count, write_buffer_size*dev->interrupt_out_endpoint_size);
+ /* FIXME - if you write more than 12 bytes this breaks */
+ bytes_to_write =
+ min(count, write_buffer_size * dev->interrupt_out_endpoint_size);
if (bytes_to_write < count)
- dev_warn(&dev->intf->dev, "Write buffer overflow, %zd bytes dropped\n",count-bytes_to_write);
+ dev_warn(&dev->intf->dev,
+ "Write buffer overflow, %zd bytes dropped\n",
+ count - bytes_to_write);
- dbg_info(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n", __func__, count, bytes_to_write);
+ dbg_info(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n",
+ __func__, count, bytes_to_write);
if (copy_from_user(dev->interrupt_out_buffer, buffer, bytes_to_write)) {
retval = -EFAULT;
@@ -589,11 +608,10 @@ static ssize_t usb_alphatrack_write(struct file *file, const char __user *buffer
usb_fill_int_urb(dev->interrupt_out_urb,
interface_to_usbdev(dev->intf),
usb_sndintpipe(interface_to_usbdev(dev->intf),
- dev->interrupt_out_endpoint->bEndpointAddress),
- dev->interrupt_out_buffer,
- bytes_to_write,
- usb_alphatrack_interrupt_out_callback,
- dev,
+ dev->interrupt_out_endpoint->
+ bEndpointAddress),
+ dev->interrupt_out_buffer, bytes_to_write,
+ usb_alphatrack_interrupt_out_callback, dev,
dev->interrupt_out_interval);
dev->interrupt_out_busy = 1;
atomic_inc(&dev->writes_pending);
@@ -618,12 +636,12 @@ exit:
/* file operations needed when we register this driver */
static const struct file_operations usb_alphatrack_fops = {
- .owner = THIS_MODULE,
- .read = usb_alphatrack_read,
- .write = usb_alphatrack_write,
- .open = usb_alphatrack_open,
- .release = usb_alphatrack_release,
- .poll = usb_alphatrack_poll,
+ .owner = THIS_MODULE,
+ .read = usb_alphatrack_read,
+ .write = usb_alphatrack_write,
+ .open = usb_alphatrack_open,
+ .release = usb_alphatrack_release,
+ .poll = usb_alphatrack_poll,
};
/*
@@ -632,19 +650,19 @@ static const struct file_operations usb_alphatrack_fops = {
*/
static struct usb_class_driver usb_alphatrack_class = {
- .name = "alphatrack%d",
- .fops = &usb_alphatrack_fops,
- .minor_base = USB_ALPHATRACK_MINOR_BASE,
+ .name = "alphatrack%d",
+ .fops = &usb_alphatrack_fops,
+ .minor_base = USB_ALPHATRACK_MINOR_BASE,
};
-
/**
* usb_alphatrack_probe
*
* Called by the usb core when a new device is connected that it thinks
* this driver might be interested in.
*/
-static int usb_alphatrack_probe(struct usb_interface *intf, const struct usb_device_id *id)
+static int usb_alphatrack_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_alphatrack *dev = NULL;
@@ -683,28 +701,35 @@ static int usb_alphatrack_probe(struct usb_interface *intf, const struct usb_dev
goto error;
}
if (dev->interrupt_out_endpoint == NULL)
- dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n");
+ dev_warn(&intf->dev,
+ "Interrupt out endpoint not found"
+ "(using control endpoint instead)\n");
- dev->interrupt_in_endpoint_size = le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize);
+ dev->interrupt_in_endpoint_size =
+ le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize);
if (dev->interrupt_in_endpoint_size != 64)
- dev_warn(&intf->dev, "Interrupt in endpoint size is not 64!\n");
-
- if(ring_buffer_size == 0) { ring_buffer_size = RING_BUFFER_SIZE; }
+ dev_warn(&intf->dev, "Interrupt in endpoint size is not 64!\n");
- true_size = min(ring_buffer_size,RING_BUFFER_SIZE);
+ if (ring_buffer_size == 0)
+ ring_buffer_size = RING_BUFFER_SIZE;
- /* FIXME - there are more usb_alloc routines for dma correctness. Needed? */
+ true_size = min(ring_buffer_size, RING_BUFFER_SIZE);
-// dev->ring_buffer = kmalloc((true_size*sizeof(struct alphatrack_icmd))+12, GFP_KERNEL);
- dev->ring_buffer = kmalloc((true_size*sizeof(struct alphatrack_icmd)), GFP_KERNEL);
+ /* FIXME - there are more usb_alloc routines for dma correctness.
+ Needed? */
+ dev->ring_buffer =
+ kmalloc((true_size * sizeof(struct alphatrack_icmd)), GFP_KERNEL);
if (!dev->ring_buffer) {
- dev_err(&intf->dev, "Couldn't allocate input ring_buffer of size %d\n",true_size);
+ dev_err(&intf->dev,
+ "Couldn't allocate input ring_buffer of size %d\n",
+ true_size);
goto error;
}
- dev->interrupt_in_buffer = kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL);
+ dev->interrupt_in_buffer =
+ kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL);
if (!dev->interrupt_in_buffer) {
dev_err(&intf->dev, "Couldn't allocate interrupt_in_buffer\n");
@@ -721,23 +746,30 @@ static int usb_alphatrack_probe(struct usb_interface *intf, const struct usb_dev
goto error;
}
- dev->interrupt_out_endpoint_size = dev->interrupt_out_endpoint ? le16_to_cpu(dev->interrupt_out_endpoint->wMaxPacketSize) :
- udev->descriptor.bMaxPacketSize0;
+ dev->interrupt_out_endpoint_size =
+ dev->interrupt_out_endpoint ? le16_to_cpu(dev->
+ interrupt_out_endpoint->
+ wMaxPacketSize) : udev->
+ descriptor.bMaxPacketSize0;
- if (dev->interrupt_out_endpoint_size !=64)
- dev_warn(&intf->dev, "Interrupt out endpoint size is not 64!)\n");
+ if (dev->interrupt_out_endpoint_size != 64)
+ dev_warn(&intf->dev,
+ "Interrupt out endpoint size is not 64!)\n");
- if(write_buffer_size == 0) { write_buffer_size = WRITE_BUFFER_SIZE; }
- true_size = min(write_buffer_size,WRITE_BUFFER_SIZE);
+ if (write_buffer_size == 0)
+ write_buffer_size = WRITE_BUFFER_SIZE;
+ true_size = min(write_buffer_size, WRITE_BUFFER_SIZE);
- dev->interrupt_out_buffer = kmalloc(true_size*dev->interrupt_out_endpoint_size, GFP_KERNEL);
+ dev->interrupt_out_buffer =
+ kmalloc(true_size * dev->interrupt_out_endpoint_size, GFP_KERNEL);
if (!dev->interrupt_out_buffer) {
dev_err(&intf->dev, "Couldn't allocate interrupt_out_buffer\n");
goto error;
}
- dev->write_buffer = kmalloc(sizeof(struct alphatrack_ocmd)*true_size, GFP_KERNEL);
+ dev->write_buffer =
+ kmalloc(sizeof(struct alphatrack_ocmd) * true_size, GFP_KERNEL);
if (!dev->write_buffer) {
dev_err(&intf->dev, "Couldn't allocate write_buffer \n");
@@ -749,25 +781,36 @@ static int usb_alphatrack_probe(struct usb_interface *intf, const struct usb_dev
dev_err(&intf->dev, "Couldn't allocate interrupt_out_urb\n");
goto error;
}
- dev->interrupt_in_interval = min_interrupt_in_interval > dev->interrupt_in_endpoint->bInterval ? min_interrupt_in_interval : dev->interrupt_in_endpoint->bInterval;
+ dev->interrupt_in_interval =
+ min_interrupt_in_interval >
+ dev->interrupt_in_endpoint->
+ bInterval ? min_interrupt_in_interval : dev->interrupt_in_endpoint->
+ bInterval;
if (dev->interrupt_out_endpoint)
- dev->interrupt_out_interval = min_interrupt_out_interval > dev->interrupt_out_endpoint->bInterval ? min_interrupt_out_interval : dev->interrupt_out_endpoint->bInterval;
+ dev->interrupt_out_interval =
+ min_interrupt_out_interval >
+ dev->interrupt_out_endpoint->
+ bInterval ? min_interrupt_out_interval : dev->
+ interrupt_out_endpoint->bInterval;
/* we can register the device now, as it is ready */
usb_set_intfdata(intf, dev);
- atomic_set(&dev->writes_pending,0);
+ atomic_set(&dev->writes_pending, 0);
retval = usb_register_dev(intf, &usb_alphatrack_class);
if (retval) {
/* something prevented us from registering this driver */
- dev_err(&intf->dev, "Not able to get a minor for this device.\n");
+ dev_err(&intf->dev,
+ "Not able to get a minor for this device.\n");
usb_set_intfdata(intf, NULL);
goto error;
}
/* let the user know what node this device is now attached to */
- dev_info(&intf->dev, "Alphatrack Device #%d now attached to major %d minor %d\n",
- (intf->minor - USB_ALPHATRACK_MINOR_BASE), USB_MAJOR, intf->minor);
+ dev_info(&intf->dev,
+ "Alphatrack Device #%d now attached to major %d minor %d\n",
+ (intf->minor - USB_ALPHATRACK_MINOR_BASE), USB_MAJOR,
+ intf->minor);
exit:
return retval;
@@ -809,7 +852,7 @@ static void usb_alphatrack_disconnect(struct usb_interface *intf)
up(&dev->sem);
}
- atomic_set(&dev->writes_pending,0);
+ atomic_set(&dev->writes_pending, 0);
mutex_unlock(&disconnect_mutex);
dev_info(&intf->dev, "Alphatrack Surface #%d now disconnected\n",
@@ -818,10 +861,10 @@ static void usb_alphatrack_disconnect(struct usb_interface *intf)
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver usb_alphatrack_driver = {
- .name = "alphatrack",
- .probe = usb_alphatrack_probe,
- .disconnect = usb_alphatrack_disconnect,
- .id_table = usb_alphatrack_table,
+ .name = "alphatrack",
+ .probe = usb_alphatrack_probe,
+ .disconnect = usb_alphatrack_disconnect,
+ .id_table = usb_alphatrack_table,
};
/**
@@ -834,7 +877,8 @@ static int __init usb_alphatrack_init(void)
/* register this driver with the USB subsystem */
retval = usb_register(&usb_alphatrack_driver);
if (retval)
- err("usb_register failed for the "__FILE__" driver. Error number %d\n", retval);
+ err("usb_register failed for the " __FILE__
+ " driver. Error number %d\n", retval);
return retval;
}
@@ -850,4 +894,3 @@ static void __exit usb_alphatrack_exit(void)
module_init(usb_alphatrack_init);
module_exit(usb_alphatrack_exit);
-
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