*
*/
-/**
+/*
* This driver uses a ring buffer for time critical reading of
* interrupt in reports and provides read and write methods for
* raw interrupt reports.
* as we only have 17 commands for the tranzport. In particular this is
* key for getting lights to flash in time as otherwise many commands
* can be buffered up before the light change makes it to the interface.
-*/
+ */
#include <linux/kernel.h>
#include <linux/errno.h>
#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>
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
-#include frontier_compat.h
-#endif
-
/* Define these values to match your devices */
#define VENDOR_ID 0x165b
-#define PRODUCT_ID 0x8101
+#define PRODUCT_ID 0x8101
#ifdef CONFIG_USB_DYNAMIC_MINORS
#define USB_TRANZPORT_MINOR_BASE 0
-#else
-// FIXME 176 - is the ldusb driver's minor - apply for a minor soon
+#else /* FIXME 176 - is the ldusb driver's minor - apply for a minor soon */
#define USB_TRANZPORT_MINOR_BASE 177
#endif
/* table of devices that work with this driver */
-static struct usb_device_id usb_tranzport_table [] = {
- { USB_DEVICE(VENDOR_ID, PRODUCT_ID) },
- { } /* Terminating entry */
+static struct usb_device_id usb_tranzport_table[] = {
+ {USB_DEVICE(VENDOR_ID, PRODUCT_ID)},
+ {} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, usb_tranzport_table);
-MODULE_VERSION("0.33");
+MODULE_VERSION("0.34");
MODULE_AUTHOR("Mike Taht <m@taht.net>");
MODULE_DESCRIPTION("Tranzport USB Driver");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("Frontier Designs Tranzport Control Surface");
-/* These two aren't done yet */
-
-#define SUPPRESS_EXTRA_ONLINE_EVENTS 0
-#define BUFFERED_WRITES 0
-
#define SUPPRESS_EXTRA_OFFLINE_EVENTS 1
#define COMPRESS_WHEEL_EVENTS 1
#define BUFFERED_READS 1
#define RING_BUFFER_SIZE 1000
#define WRITE_BUFFER_SIZE 34
#define TRANZPORT_USB_TIMEOUT 10
+#define TRANZPORT_DEBUG 0
-
-static int debug = 0;
+static int debug = TRANZPORT_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)
/* Module parameters */
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 in reports");
/* 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");
/*
static int min_interrupt_in_interval = TRANZPORT_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 = TRANZPORT_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");
struct tranzport_cmd {
- unsigned char cmd[8];
+ unsigned char cmd[8];
};
enum LightID {
LightAnysolo,
LightLoop,
LightPunch
- };
+};
/* Structure to hold all of our device specific stuff */
struct usb_tranzport {
- 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 tranzport_cmd (*ring_buffer)[RING_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;
- 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 opened */
+ struct tranzport_cmd (*ring_buffer)[RING_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;
+ 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;
/* Sysfs and translation support */
- int event; /* alternate interface to events */
- int wheel; /* - for negative, 0 for none, + for positive */
- 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 compress_wheel; /* flag to compress wheel events */
- unsigned char light; /* 7 bits used */
+ int event; /* alternate interface to events */
+ int wheel; /* - for negative, 0 for none, + for positive */
+ 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 compress_wheel; /* flag to compress wheel events */
+ unsigned char light; /* 7 bits used */
unsigned char last_cmd[8];
unsigned char last_input[8];
- unsigned char screen[40]; // We'll also have cells
+ unsigned char screen[40]; /* We'll also have cells */
};
usb_kill_urb(dev->interrupt_out_urb);
}
-// FIXME ~light not good enough or correct - need atomic set_bit
-
-#define show_set_light(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct usb_interface *intf = to_usb_interface(dev); \
- struct usb_tranzport *t = usb_get_intfdata(intf); \
- enum LightID light = value; \
- int temp = (1 && (t->light & (1 << light))); \
- return sprintf(buf, "%d\n", temp ); \
-} \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
-{ \
- struct usb_interface *intf = to_usb_interface(dev); \
- struct usb_tranzport *t = usb_get_intfdata(intf); \
- int temp = simple_strtoul(buf, NULL, 10); \
- enum LightID light = (temp << value) & (t->light << value); \
- t->light = (t->light & ~light) ; \
- return count; \
-} \
-static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
+/* FIXME ~light not good enough or correct - need atomic set_bit */
+
+#define show_set_light(value) \
+ static ssize_t show_##value( \
+ struct device *dev, struct device_attribute *attr, char *buf) \
+ { \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct usb_tranzport *t = usb_get_intfdata(intf); \
+ enum LightID light = value; \
+ int temp = (1 && (t->light & (1 << light))); \
+ return sprintf(buf, "%d\n", temp); \
+ } \
+ static ssize_t set_##value( \
+ struct device *dev, struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct usb_tranzport *t = usb_get_intfdata(intf); \
+ int temp = simple_strtoul(buf, NULL, 10); \
+ enum LightID light = (temp << value) & (t->light << value); \
+ t->light = (t->light & ~light) ; \
+ return count; \
+ } \
+ static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
show_set_light(LightRecord);
show_set_light(LightTrackrec);
show_set_light(LightLoop);
show_set_light(LightPunch);
-
-#define show_set_int(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct usb_interface *intf = to_usb_interface(dev); \
- struct usb_tranzport *t = usb_get_intfdata(intf); \
- \
- return sprintf(buf, "%d\n", t->value); \
-} \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
-{ \
- struct usb_interface *intf = to_usb_interface(dev); \
- struct usb_tranzport *t = usb_get_intfdata(intf); \
- int temp = simple_strtoul(buf, NULL, 10); \
- \
- t->value = temp; \
- return count; \
-} \
-static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
+#define show_set_int(value) \
+ static ssize_t show_##value(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+ { \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct usb_tranzport *t = usb_get_intfdata(intf); \
+ return sprintf(buf, "%d\n", t->value); \
+ } \
+ static ssize_t set_##value(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct usb_tranzport *t = usb_get_intfdata(intf); \
+ int temp = simple_strtoul(buf, NULL, 10); \
+ t->value = temp; \
+ return count; \
+ } \
+ static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
show_set_int(enable);
show_set_int(offline);
show_set_int(wheel);
show_set_int(event);
-#define show_set_cmd(value) \
-static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
-{ \
- struct usb_interface *intf = to_usb_interface(dev); \
- struct usb_tranzport *t = usb_get_intfdata(intf); \
+#define show_set_cmd(value) \
+ static ssize_t show_##value(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+ { \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct usb_tranzport *t = usb_get_intfdata(intf); \
\
- return sprintf(buf, "%d\n", t->value); \
-} \
-static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
-{ \
- struct usb_interface *intf = to_usb_interface(dev); \
- struct usb_tranzport *t = usb_get_intfdata(intf); \
- int temp = simple_strtoul(buf, NULL, 10); \
+ return sprintf(buf, "%d\n", t->value); \
+ } \
+ static ssize_t set_##value(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ struct usb_interface *intf = to_usb_interface(dev); \
+ struct usb_tranzport *t = usb_get_intfdata(intf); \
+ int temp = simple_strtoul(buf, NULL, 10); \
\
- t->value = temp; \
- return count; \
-} \
-static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
-
-
-
+ t->value = temp; \
+ return count; \
+ } \
+ static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
/**
* usb_tranzport_delete
{
usb_tranzport_abort_transfers(dev);
/* This is just too twisted to be correct */
- if(dev->intf != NULL) {
- device_remove_file(&dev->intf->dev, &dev_attr_LightRecord);
- device_remove_file(&dev->intf->dev, &dev_attr_LightTrackrec);
- device_remove_file(&dev->intf->dev, &dev_attr_LightTrackmute);
- device_remove_file(&dev->intf->dev, &dev_attr_LightTracksolo);
- device_remove_file(&dev->intf->dev, &dev_attr_LightTrackmute);
- device_remove_file(&dev->intf->dev, &dev_attr_LightAnysolo);
- device_remove_file(&dev->intf->dev, &dev_attr_LightLoop);
- device_remove_file(&dev->intf->dev, &dev_attr_LightPunch);
- device_remove_file(&dev->intf->dev, &dev_attr_wheel);
- device_remove_file(&dev->intf->dev, &dev_attr_enable);
- device_remove_file(&dev->intf->dev, &dev_attr_event);
- device_remove_file(&dev->intf->dev, &dev_attr_offline);
- device_remove_file(&dev->intf->dev, &dev_attr_compress_wheel);
-
- device_remove_file(&dev->intf->dev, &dev_attr_dump_state);
+ if (dev->intf != NULL) {
+ device_remove_file(&dev->intf->dev, &dev_attr_LightRecord);
+ device_remove_file(&dev->intf->dev, &dev_attr_LightTrackrec);
+ device_remove_file(&dev->intf->dev, &dev_attr_LightTrackmute);
+ device_remove_file(&dev->intf->dev, &dev_attr_LightTracksolo);
+ device_remove_file(&dev->intf->dev, &dev_attr_LightTrackmute);
+ device_remove_file(&dev->intf->dev, &dev_attr_LightAnysolo);
+ device_remove_file(&dev->intf->dev, &dev_attr_LightLoop);
+ device_remove_file(&dev->intf->dev, &dev_attr_LightPunch);
+ device_remove_file(&dev->intf->dev, &dev_attr_wheel);
+ device_remove_file(&dev->intf->dev, &dev_attr_enable);
+ device_remove_file(&dev->intf->dev, &dev_attr_event);
+ device_remove_file(&dev->intf->dev, &dev_attr_offline);
+ device_remove_file(&dev->intf->dev, &dev_attr_compress_wheel);
+ device_remove_file(&dev->intf->dev, &dev_attr_dump_state);
}
/* free data structures */
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",
+ dbg_info(&dev->intf->dev,
+ "%s: nonzero status received: %d\n",
__func__, urb->status);
- goto resubmit; /* maybe we can recover */
+ goto resubmit; /* maybe we can recover */
}
}
if (urb->actual_length != 8) {
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 {
- dbg_info(&dev->intf->dev, "%s: received: %02x%02x%02x%02x%02x%02x%02x%02x\n",
- __func__, dev->interrupt_in_buffer[0],dev->interrupt_in_buffer[1],dev->interrupt_in_buffer[2],dev->interrupt_in_buffer[3],dev->interrupt_in_buffer[4],dev->interrupt_in_buffer[5],dev->interrupt_in_buffer[6],dev->interrupt_in_buffer[7]);
+ dbg_info(&dev->intf->dev,
+ "%s: received: %02x%02x%02x%02x%02x%02x%02x%02x\n",
+ __func__, dev->interrupt_in_buffer[0],
+ dev->interrupt_in_buffer[1],
+ dev->interrupt_in_buffer[2],
+ dev->interrupt_in_buffer[3],
+ dev->interrupt_in_buffer[4],
+ dev->interrupt_in_buffer[5],
+ dev->interrupt_in_buffer[6],
+ dev->interrupt_in_buffer[7]);
#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; }
+ /* 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;
-#endif
- dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n", __func__,dev->ring_head,dev->ring_tail);
+#endif /* SUPPRESS_EXTRA_OFFLINE_EVENTS */
+ 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;
+ 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);
+ memcpy(&((*dev->ring_buffer)[dev->ring_head]),
+ dev->interrupt_in_buffer, urb->actual_length);
dev->ring_head = next_ring_head;
retval = 0;
memset(dev->interrupt_in_buffer, 0, urb->actual_length);
}
resubmit:
- /* resubmit if we're still running */
+/* resubmit if we're still running */
if (dev->interrupt_in_running && dev->intf) {
retval = usb_submit_urb(dev->interrupt_in_urb, GFP_ATOMIC);
if (retval)
static void usb_tranzport_interrupt_out_callback(struct urb *urb)
{
struct usb_tranzport *dev = urb->context;
-
/* sync/async unlink faults aren't errors */
if (urb->status && !(urb->status == -ENOENT ||
- urb->status == -ECONNRESET ||
- urb->status == -ESHUTDOWN))
+ urb->status == -ECONNRESET ||
+ urb->status == -ESHUTDOWN))
dbg_info(&dev->intf->dev,
- "%s - nonzero write interrupt status received: %d\n",
- __func__, urb->status);
+ "%s - nonzero write interrupt status received: %d\n",
+ __func__, urb->status);
dev->interrupt_out_busy = 0;
wake_up_interruptible(&dev->write_wait);
}
-
/**
* usb_tranzport_open
*/
if (!interface) {
err("%s - error, can't find device for minor %d\n",
- __func__, subminor);
+ __func__, subminor);
retval = -ENODEV;
goto unlock_disconnect_exit;
}
dev->ring_head = 0;
dev->ring_tail = 0;
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_buffer,
- dev->interrupt_in_endpoint_size,
- usb_tranzport_interrupt_in_callback,
- dev,
- dev->interrupt_in_interval);
+ interface_to_usbdev(interface),
+ usb_rcvintpipe(interface_to_usbdev(interface),
+ dev->interrupt_in_endpoint->
+ bEndpointAddress),
+ dev->interrupt_in_buffer,
+ dev->interrupt_in_endpoint_size,
+ usb_tranzport_interrupt_in_callback, dev,
+ dev->interrupt_in_interval);
dev->interrupt_in_running = 1;
dev->interrupt_in_done = 0;
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;
/* save device in the file's private structure */
file->private_data = dev;
-
unlock_exit:
up(&dev->sem);
/* 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_tranzport_abort_transfers(dev);
dev->open_count = 0;
/**
* usb_tranzport_poll
*/
-static unsigned int usb_tranzport_poll(struct file *file, poll_table *wait)
+static unsigned int usb_tranzport_poll(struct file *file, poll_table * wait)
{
struct usb_tranzport *dev;
unsigned int mask = 0;
-
dev = file->private_data;
-
poll_wait(file, &dev->read_wait, wait);
poll_wait(file, &dev->write_wait, wait);
-
if (dev->ring_head != dev->ring_tail)
mask |= POLLIN | POLLRDNORM;
if (!dev->interrupt_out_busy)
mask |= POLLOUT | POLLWRNORM;
-
return mask;
}
-
/**
* usb_tranzport_read
*/
-static ssize_t usb_tranzport_read(struct file *file, char __user *buffer, size_t count,
- loff_t *ppos)
+
+static ssize_t usb_tranzport_read(struct file *file, char __user *buffer,
+ size_t count, loff_t *ppos)
{
struct usb_tranzport *dev;
int retval = 0;
-
#if BUFFERED_READS
int c = 0;
#endif
-
#if COMPRESS_WHEEL_EVENTS
signed char oldwheel;
signed char newwheel;
int next_tail;
#endif
-/* do I have such a thing as a null event? */
+ /* do I have such a thing as a null event? */
dev = file->private_data;
goto exit;
}
- /* verify that the device wasn't unplugged */
- if (dev->intf == NULL) {
+ /* verify that the device wasn't unplugged */ if (dev->intf == NULL) {
retval = -ENODEV;
err("No device or device unplugged %d\n", retval);
goto unlock_exit;
retval = -EAGAIN;
goto unlock_exit;
}
- // atomic_cmp_exchange(&dev->interrupt_in_done,0,0);
- dev->interrupt_in_done = 0 ; /* tiny race - FIXME: make atomic? */
- retval = wait_event_interruptible(dev->read_wait, dev->interrupt_in_done);
- if (retval < 0) {
+ /* tiny race - FIXME: make atomic? */
+ /* atomic_cmp_exchange(&dev->interrupt_in_done,0,0); */
+ dev->interrupt_in_done = 0;
+ retval = wait_event_interruptible(dev->read_wait,
+ dev->interrupt_in_done);
+ if (retval < 0)
goto unlock_exit;
- }
}
- dbg_info(&dev->intf->dev, "%s: copying to userspace: %02x%02x%02x%02x%02x%02x%02x%02x\n",
- __func__, (*dev->ring_buffer)[dev->ring_tail].cmd[0],(*dev->ring_buffer)[dev->ring_tail].cmd[1],(*dev->ring_buffer)[dev->ring_tail].cmd[2],(*dev->ring_buffer)[dev->ring_tail].cmd[3],(*dev->ring_buffer)[dev->ring_tail].cmd[4],(*dev->ring_buffer)[dev->ring_tail].cmd[5],(*dev->ring_buffer)[dev->ring_tail].cmd[6],(*dev->ring_buffer)[dev->ring_tail].cmd[7]);
+ dbg_info(&dev->intf->dev,
+ "%s: copying to userspace: "
+ "%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ __func__,
+ (*dev->ring_buffer)[dev->ring_tail].cmd[0],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[1],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[2],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[3],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[4],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[5],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[6],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[7]);
#if BUFFERED_READS
- c = 0;
- while((c < count) && (dev->ring_tail != dev->ring_head)) {
+ c = 0;
+ while ((c < count) && (dev->ring_tail != dev->ring_head)) {
-/* This started off in the lower level service routine, and I moved it here. Then my brain died. Not done yet. */
#if COMPRESS_WHEEL_EVENTS
next_tail = (dev->ring_tail+1) % ring_buffer_size;
- if(dev->compress_wheel) cancompress = 1;
- while(dev->ring_head != next_tail && cancompress == 1 ) {
+ if (dev->compress_wheel)
+ cancompress = 1;
+ while (dev->ring_head != next_tail && cancompress == 1) {
newwheel = (*dev->ring_buffer)[next_tail].cmd[6];
oldwheel = (*dev->ring_buffer)[dev->ring_tail].cmd[6];
- // if both are wheel events, and no buttons have changes (FIXME, do I have to check?),
- // and we are the same sign, we can compress +- 7F
- // FIXME: saner check for overflow! - max of +- 7F
- // FIXME the math is wrong for going in reverse, actually, as the midi spec doesn't allow signed chars
-
- dbg_info(&dev->intf->dev, "%s: trying to compress: %02x%02x%02x%02x%02x %02x %02x %02x\n",
- __func__, (*dev->ring_buffer)[dev->ring_tail].cmd[0],(*dev->ring_buffer)[dev->ring_tail].cmd[1],(*dev->ring_buffer)[dev->ring_tail].cmd[2],(*dev->ring_buffer)[dev->ring_tail].cmd[3],(*dev->ring_buffer)[dev->ring_tail].cmd[4],(*dev->ring_buffer)[dev->ring_tail].cmd[5],(*dev->ring_buffer)[dev->ring_tail].cmd[6],(*dev->ring_buffer)[dev->ring_tail].cmd[7]);
-
-
- if(((*dev->ring_buffer)[dev->ring_tail].cmd[6] != 0 &&
- (*dev->ring_buffer)[next_tail].cmd[6] != 0 ) &&
+ /* if both are wheel events, and
+ no buttons have changes (FIXME, do I have to check?),
+ and we are the same sign, we can compress +- 7F
+ */
+ dbg_info(&dev->intf->dev,
+ "%s: trying to compress: "
+ "%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ __func__,
+ (*dev->ring_buffer)[dev->ring_tail].cmd[0],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[1],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[2],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[3],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[4],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[5],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[6],
+ (*dev->ring_buffer)[dev->ring_tail].cmd[7]);
+
+ if (((*dev->ring_buffer)[dev->ring_tail].cmd[6] != 0 &&
+ (*dev->ring_buffer)[next_tail].cmd[6] != 0) &&
((newwheel > 0 && oldwheel > 0) ||
- (newwheel < 0 && oldwheel < 0)) &&
- ((*dev->ring_buffer)[dev->ring_tail].cmd[2] == (*dev->ring_buffer)[next_tail].cmd[2]) &&
- ((*dev->ring_buffer)[dev->ring_tail].cmd[3] == (*dev->ring_buffer)[next_tail].cmd[3]) &&
- ((*dev->ring_buffer)[dev->ring_tail].cmd[4] == (*dev->ring_buffer)[next_tail].cmd[4]) &&
- ((*dev->ring_buffer)[dev->ring_tail].cmd[5] == (*dev->ring_buffer)[next_tail].cmd[5]))
- {
- dbg_info(&dev->intf->dev, "%s: should compress: %02x%02x%02x%02x%02x%02x%02x%02x\n",
- __func__, (*dev->ring_buffer)[dev->ring_tail].cmd[0],(*dev->ring_buffer)[dev->ring_tail].cmd[1],(*dev->ring_buffer)[dev->ring_tail].cmd[2],(*dev->ring_buffer)[dev->ring_tail].cmd[3],(*dev->ring_buffer)[dev->ring_tail].cmd[4],(*dev->ring_buffer)[dev->ring_tail].cmd[5],(*dev->ring_buffer)[dev->ring_tail].cmd[6],(*dev->ring_buffer)[dev->ring_tail].cmd[7]);
-
+ (newwheel < 0 && oldwheel < 0)) &&
+ ((*dev->ring_buffer)[dev->ring_tail].cmd[2] ==
+ (*dev->ring_buffer)[next_tail].cmd[2]) &&
+ ((*dev->ring_buffer)[dev->ring_tail].cmd[3] ==
+ (*dev->ring_buffer)[next_tail].cmd[3]) &&
+ ((*dev->ring_buffer)[dev->ring_tail].cmd[4] ==
+ (*dev->ring_buffer)[next_tail].cmd[4]) &&
+ ((*dev->ring_buffer)[dev->ring_tail].cmd[5] ==
+ (*dev->ring_buffer)[next_tail].cmd[5])) {
+ dbg_info(&dev->intf->dev,
+ "%s: should compress: "
+ "%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ __func__,
+ (*dev->ring_buffer)[dev->ring_tail].
+ cmd[0],
+ (*dev->ring_buffer)[dev->ring_tail].
+ cmd[1],
+ (*dev->ring_buffer)[dev->ring_tail].
+ cmd[2],
+ (*dev->ring_buffer)[dev->ring_tail].
+ cmd[3],
+ (*dev->ring_buffer)[dev->ring_tail].
+ cmd[4],
+ (*dev->ring_buffer)[dev->ring_tail].
+ cmd[5],
+ (*dev->ring_buffer)[dev->ring_tail].
+ cmd[6],
+ (*dev->ring_buffer)[dev->ring_tail].
+ cmd[7]);
newwheel += oldwheel;
- if(oldwheel > 0 && !(newwheel > 0)) {
+ if (oldwheel > 0 && !(newwheel > 0)) {
newwheel = 0x7f;
cancompress = 0;
}
- if(oldwheel < 0 && !(newwheel < 0)) {
+ if (oldwheel < 0 && !(newwheel < 0)) {
newwheel = 0x80;
cancompress = 0;
}
- (*dev->ring_buffer)[next_tail].cmd[6] = newwheel;
+ (*dev->ring_buffer)[next_tail].cmd[6] =
+ newwheel;
dev->ring_tail = next_tail;
- next_tail = (dev->ring_tail+1) % ring_buffer_size;
+ next_tail =
+ (dev->ring_tail + 1) % ring_buffer_size;
} else {
cancompress = 0;
}
}
#endif /* COMPRESS_WHEEL_EVENTS */
-
- if (copy_to_user(&buffer[c], &(*dev->ring_buffer)[dev->ring_tail], 8)) {
+ if (copy_to_user(
+ &buffer[c],
+ &(*dev->ring_buffer)[dev->ring_tail], 8)) {
retval = -EFAULT;
goto unlock_exit;
}
-
- dev->ring_tail = (dev->ring_tail+1) % ring_buffer_size;
- c+=8;
- dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n", __func__,dev->ring_head,dev->ring_tail);
- }
- retval = c;
+ dev->ring_tail = (dev->ring_tail + 1) % ring_buffer_size;
+ c += 8;
+ dbg_info(&dev->intf->dev,
+ "%s: head, tail are %x, %x\n",
+ __func__, dev->ring_head, dev->ring_tail);
+ }
+ retval = c;
#else
- if (copy_to_user(buffer, &(*dev->ring_buffer)[dev->ring_tail], 8)) {
- retval = -EFAULT;
- goto unlock_exit;
- }
+/* if (copy_to_user(buffer, &(*dev->ring_buffer)[dev->ring_tail], 8)) { */
+ retval = -EFAULT;
+ goto unlock_exit;
+}
- dev->ring_tail = (dev->ring_tail+1) % ring_buffer_size;
- dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n", __func__,dev->ring_head,dev->ring_tail);
+dev->ring_tail = (dev->ring_tail + 1) % ring_buffer_size;
+dbg_info(&dev->intf->dev, "%s: head, tail are %x, %x\n",
+ __func__, dev->ring_head, dev->ring_tail);
- retval = 8;
+retval = 8;
#endif /* BUFFERED_READS */
unlock_exit:
- /* unlock the device */
- up(&dev->sem);
+/* unlock the device */
+up(&dev->sem);
exit:
- return retval;
+return retval;
}
/**
* usb_tranzport_write
*/
-static ssize_t usb_tranzport_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
+static ssize_t usb_tranzport_write(struct file *file,
+ const char __user *buffer, size_t count,
+ loff_t *ppos)
{
struct usb_tranzport *dev;
size_t bytes_to_write;
retval = -ERESTARTSYS;
goto exit;
}
-
/* verify that the device wasn't unplugged */
if (dev->intf == NULL) {
retval = -ENODEV;
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 */
- bytes_to_write = min(count, write_buffer_size*dev->interrupt_out_endpoint_size);
+ 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;
/* send off the urb */
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_tranzport_interrupt_out_callback,
- dev,
- dev->interrupt_out_interval);
+ 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_tranzport_interrupt_out_callback, dev,
+ dev->interrupt_out_interval);
dev->interrupt_out_busy = 1;
wmb();
/* file operations needed when we register this driver */
static const struct file_operations usb_tranzport_fops = {
- .owner = THIS_MODULE,
- .read = usb_tranzport_read,
- .write = usb_tranzport_write,
- .open = usb_tranzport_open,
- .release = usb_tranzport_release,
- .poll = usb_tranzport_poll,
+ .owner = THIS_MODULE,
+ .read = usb_tranzport_read,
+ .write = usb_tranzport_write,
+ .open = usb_tranzport_open,
+ .release = usb_tranzport_release,
+ .poll = usb_tranzport_poll,
};
/*
* and to have the device registered with the driver core
*/
static struct usb_class_driver usb_tranzport_class = {
- .name = "tranzport%d",
- .fops = &usb_tranzport_fops,
- .minor_base = USB_TRANZPORT_MINOR_BASE,
+ .name = "tranzport%d",
+ .fops = &usb_tranzport_fops,
+ .minor_base = USB_TRANZPORT_MINOR_BASE,
};
-
/**
* usb_tranzport_probe
*
* Called by the usb core when a new device is connected that it thinks
* this driver might be interested in.
*/
-static int usb_tranzport_probe(struct usb_interface *intf, const struct usb_device_id *id)
-{
+static int usb_tranzport_probe(struct usb_interface *intf,
+ const struct usb_device_id *id) {
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_tranzport *dev = NULL;
struct usb_host_interface *iface_desc;
/* allocate memory for our device state and intialize it */
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
dev_err(&intf->dev, "Out of memory\n");
goto exit;
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 != 8)
- dev_warn(&intf->dev, "Interrupt in endpoint size is not 8!\n");
+ dev_warn(&intf->dev, "Interrupt in endpoint size is not 8!\n");
- if(ring_buffer_size == 0) { ring_buffer_size = RING_BUFFER_SIZE; }
- true_size = min(ring_buffer_size,RING_BUFFER_SIZE);
- /* FIXME - there are more usb_alloc routines for dma correctness. Needed? */
+ if (ring_buffer_size == 0)
+ ring_buffer_size = RING_BUFFER_SIZE;
+ true_size = min(ring_buffer_size, RING_BUFFER_SIZE);
- dev->ring_buffer = kmalloc((true_size*sizeof(struct tranzport_cmd))+8, GFP_KERNEL);
+ /* FIXME - there are more usb_alloc routines for dma correctness.
+ Needed? */
+
+ dev->ring_buffer =
+ kmalloc((true_size * sizeof(struct tranzport_cmd)) + 8, GFP_KERNEL);
if (!dev->ring_buffer) {
- dev_err(&intf->dev, "Couldn't allocate ring_buffer of size %d\n",true_size);
+ dev_err(&intf->dev,
+ "Couldn't allocate ring_buffer 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");
goto error;
dev_err(&intf->dev, "Couldn't allocate interrupt_in_urb\n");
goto error;
}
- 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 !=8)
- dev_warn(&intf->dev, "Interrupt out endpoint size is not 8!)\n");
-
- dev->interrupt_out_buffer = kmalloc(write_buffer_size*dev->interrupt_out_endpoint_size, GFP_KERNEL);
+ 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 != 8)
+ dev_warn(&intf->dev,
+ "Interrupt out endpoint size is not 8!)\n");
+
+ dev->interrupt_out_buffer =
+ kmalloc(write_buffer_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_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;
- 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_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;
+ }
/* we can register the device now, as it is ready */
usb_set_intfdata(intf, dev);
retval = usb_register_dev(intf, &usb_tranzport_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;
}
- if((retval = device_create_file(&intf->dev, &dev_attr_LightRecord))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_LightTrackrec))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_LightTrackmute))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_LightTracksolo))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_LightAnysolo))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_LightLoop))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_LightPunch))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_wheel))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_event))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_dump_state))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_compress_wheel))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_enable))) goto error;
- if((retval = device_create_file(&intf->dev, &dev_attr_offline))) goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_LightRecord);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_LightTrackrec);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_LightTrackmute);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_LightTracksolo);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_LightAnysolo);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_LightLoop);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_LightPunch);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_wheel);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_event);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_dump_state);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_compress_wheel);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_enable);
+ if (retval)
+ goto error;
+ retval = device_create_file(&intf->dev, &dev_attr_offline);
+ if (retval)
+ goto error;
/* let the user know what node this device is now attached to */
- dev_info(&intf->dev, "Tranzport Device #%d now attached to major %d minor %d\n",
- (intf->minor - USB_TRANZPORT_MINOR_BASE), USB_MAJOR, intf->minor);
+ dev_info(&intf->dev,
+ "Tranzport Device #%d now attached to major %d minor %d\n",
+ (intf->minor - USB_TRANZPORT_MINOR_BASE), USB_MAJOR,
+ intf->minor);
exit:
return retval;
error:
usb_tranzport_delete(dev);
-
return retval;
}
mutex_unlock(&disconnect_mutex);
dev_info(&intf->dev, "Tranzport Surface #%d now disconnected\n",
- (minor - USB_TRANZPORT_MINOR_BASE));
+ (minor - USB_TRANZPORT_MINOR_BASE));
}
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver usb_tranzport_driver = {
- .name = "tranzport",
- .probe = usb_tranzport_probe,
- .disconnect = usb_tranzport_disconnect,
- .id_table = usb_tranzport_table,
+ .name = "tranzport",
+ .probe = usb_tranzport_probe,
+ .disconnect = usb_tranzport_disconnect,
+ .id_table = usb_tranzport_table,
};
/**
/* register this driver with the USB subsystem */
retval = usb_register(&usb_tranzport_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;
}
-
/**
* usb_tranzport_exit
*/
+
static void __exit usb_tranzport_exit(void)
{
/* deregister this driver with the USB subsystem */
module_init(usb_tranzport_init);
module_exit(usb_tranzport_exit);
-
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff