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Staging: add frontier tranzport and alphatrack drivers

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Adds the tranzport and alphatrack drivers to the staging tree.

Cc: David Taht <d@teklibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Taht 2008-12-17 17:13:45 -08:00 committed by Greg Kroah-Hartman
parent 1242c70df5
commit 8da3dc2875
12 changed files with 2525 additions and 0 deletions
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2
drivers/staging/Kconfig
View file

@ -89,5 +89,7 @@ source "drivers/staging/rspiusb/Kconfig"
source "drivers/staging/mimio/Kconfig"
source "drivers/staging/frontier/Kconfig"
endif # !STAGING_EXCLUDE_BUILD
endif # STAGING

1
drivers/staging/Makefile
View file

@ -27,3 +27,4 @@ obj-$(CONFIG_ALTERA_PCIE_CHDMA) += altpciechdma/
obj-$(CONFIG_RTL8187SE) += rtl8187se/
obj-$(CONFIG_USB_RSPI) += rspiusb/
obj-$(CONFIG_INPUT_MIMIO) += mimio/
obj-$(CONFIG_TRANZPORT) += frontier/

6
drivers/staging/frontier/Kconfig Normal file
View file

@ -0,0 +1,6 @@
config TRANZPORT
tristate "Frontier Tranzport and Alphatrack support"
depends on USB
default N
---help---
Enable support for the Frontier Tranzport and Alphatrack devices.

2
drivers/staging/frontier/Makefile Normal file
View file

@ -0,0 +1,2 @@
obj-$(CONFIG_TRANZPORT) += tranzport.o
obj-$(CONFIG_TRANZPORT) += alphatrack.o

28
drivers/staging/frontier/README Normal file
View file

@ -0,0 +1,28 @@
This directory contains the USB Tranzport and Alphatrack Kernel drivers for Linux.
At present the tranzport does reads/writes of 8 byte cmds to /dev/tranzport0 to control
the lights and screen and wheel
At present the alphatrack accepts reads/writes of 12 byte cmds to /dev/tranzport0 to control
the lights and screen and fader.
Both drivers also have some sysfs hooks that are non-functional at the moment.
The API is currently closely tied to the ardour revision and WILL change.
A sysfs interface is PERFECT for simple userspace apps to do fun things with the
lights and screen. It's fairly lousy for handling input events and very lousy
for watching the state of the shuttle wheel.
A linux input events interface is great for the input events and shuttle wheel. It's
theoretically OK on LEDs. A Fader can be mapped to an absolute mouse device.
But there is no LCD support at all.
In the end this is going to be driven by a midi layer, which handles all those
cases via a defined API, but - among other things - is slow, doesn't do
flow control, and is a LOT of extra work. Frankly, I'd like to keep the
core driver simple because the only realtime work really required is
the bottom half interrupt handler and the output overlapping.
Exposing some sort of clean aio api to userspace would be perfect. What that
API looks like? Gah. beats me.

9
drivers/staging/frontier/TODO Normal file
View file

@ -0,0 +1,9 @@
TODO:
- checkpatch.pl clean
- sparse clean
- fix userspace interface to be sane
- possibly just port to userspace with libusb
- review by the USB developer community
Please send any patches for this driver to Greg Kroah-Hartman <greg@kroah.com>
and David Taht <d@teklibre.com>.

901
drivers/staging/frontier/alphatrack.c Normal file
View file

@ -0,0 +1,901 @@
/*
* Frontier Designs Alphatrack driver
*
* Copyright (C) 2007 Michael Taht (m@taht.net)
*
* Based on the usbled driver and ldusb drivers by
*
* Copyright (C) 2004 Greg Kroah-Hartman (greg@kroah.com)
* Copyright (C) 2005 Michael Hund <mhund@ld-didactic.de>
*
* The ldusb driver was, in turn, derived from Lego USB Tower driver
* Copyright (C) 2003 David Glance <advidgsf@sourceforge.net>
* 2001-2004 Juergen Stuber <starblue@users.sourceforge.net>
*
* 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, version 2.
*
*/
/**
* This driver uses a ring buffer for time critical reading of
* interrupt in reports and provides read and write methods for
* raw interrupt reports.
*/
/* Note: this currently uses a dumb ringbuffer for reads and writes.
* A more optimal driver would cache and kill off outstanding urbs that are
* now invalid, and ignore ones that already were in the queue but valid
* as we only have 30 commands for the alphatrack. 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/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kobject.h>
#include <linux/mutex.h>
#include <linux/version.h>
#include <asm/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
#define PRODUCT_ID 0xfad1
#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
#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 */
};
MODULE_DEVICE_TABLE(usb, usb_alphatrack_table);
MODULE_VERSION("0.40");
MODULE_AUTHOR("Mike Taht <m@taht.net>");
MODULE_DESCRIPTION("Alphatrack USB Driver");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("Frontier Designs Alphatrack Control Surface");
/* These aren't done yet */
#define ALPHATRACK_HAVE_SYSFS 0
#define SUPPRESS_EXTRA_ONLINE_EVENTS 0
#define BUFFERED_WRITES 0
#define SUPPRESS_EXTRA_OFFLINE_EVENTS 0
#define COMPRESS_FADER_EVENTS 0
#define BUFFERED_READS 1
#define RING_BUFFER_SIZE 512
#define WRITE_BUFFER_SIZE 34
#define ALPHATRACK_USB_TIMEOUT 10
#define OUTPUT_CMD_SIZE 8
#define INPUT_CMD_SIZE 12
static int debug = 0;
/* Use our own dbg macro */
#define dbg_info(dev, format, arg...) do { if (debug) dev_info(dev , format , ## arg); } while (0)
#if 0
#define alphatrack_ocmd_info(dev, cmd, format, arg...) do { if (debug) ocmd_info(dev , cmd , format, ## arg); } while (0)
#define alphatrack_icmd_info(dev, cmd, format, arg...) do { if (debug) icmd_info(dev , cmd, format, ## arg); } while (0)
#else
#define alphatrack_ocmd_info(dev, cmd, format, arg...)
#define alphatrack_icmd_info(dev, cmd, format, arg...)
#endif
/* Module parameters */
module_param(debug, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
/* All interrupt in transfers are collected in a ring buffer to
* avoid racing conditions and get better performance of the driver.
*/
static int ring_buffer_size = RING_BUFFER_SIZE;
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_PARM_DESC(write_buffer_size, "Write buffer size");
/*
* Increase the interval for debugging purposes.
* or set to 1 to use the standard interval from the endpoint descriptors.
*/
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");
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");
/* 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;
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];
};
/* prevent races between open() and disconnect() */
static DEFINE_MUTEX(disconnect_mutex);
/* forward declaration */
static struct usb_driver usb_alphatrack_driver;
static void icmd_info(struct usb_alphatrack *dev, char *cmd, char *str, char *a) {
/*
if (dev->verbose) {
} else {
}
*/
}
static void ocmd_info(struct usb_alphatrack *dev, char *cmd, char *str, char* a) {
/*
if (dev->verbose) {
} else {
}
*/
}
/**
* usb_alphatrack_abort_transfers
* aborts transfers and frees associated data structures
*/
static void usb_alphatrack_abort_transfers(struct usb_alphatrack *dev)
{
/* shutdown transfer */
if (dev->interrupt_in_running) {
dev->interrupt_in_running = 0;
if (dev->intf)
usb_kill_urb(dev->interrupt_in_urb);
}
if (dev->interrupt_out_busy)
if (dev->intf)
usb_kill_urb(dev->interrupt_out_urb);
}
#if ALPHATRACK_HAVE_SYSFS
/* lots and lots and lots of sysfs stuff */
/* Currently borked, probably useless */
#include "alphatrack_sysfs.c"
#endif
/**
* usb_alphatrack_delete
*/
static void usb_alphatrack_delete(struct usb_alphatrack *dev)
{
usb_alphatrack_abort_transfers(dev);
usb_free_urb(dev->interrupt_in_urb);
usb_free_urb(dev->interrupt_out_urb);
kfree(dev->ring_buffer);
kfree(dev->interrupt_in_buffer);
kfree(dev->interrupt_out_buffer);
kfree(dev); // fixme oldi_buffer
}
/**
* usb_alphatrack_interrupt_in_callback
*/
static void usb_alphatrack_interrupt_in_callback(struct urb *urb)
{
struct usb_alphatrack *dev = urb->context;
unsigned int next_ring_head;
int retval = -1;
int *iptr;
if (urb->status) {
if (urb->status == -ENOENT ||
urb->status == -ECONNRESET ||
urb->status == -ESHUTDOWN) {
goto exit;
} else {
dbg_info(&dev->intf->dev, "%s: nonzero status received: %d\n",
__FUNCTION__, 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);
} 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;
}
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; }
/* 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", __FUNCTION__,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->ring_head = next_ring_head;
retval = 0;
memset(dev->interrupt_in_buffer, 0, urb->actual_length);
} else {
dev_warn(&dev->intf->dev,
"Ring buffer overflow, %d bytes dropped\n",
urb->actual_length);
memset(dev->interrupt_in_buffer, 0, urb->actual_length);
}
}
resubmit:
/* 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)
dev_err(&dev->intf->dev,
"usb_submit_urb failed (%d)\n", retval);
}
exit:
dev->interrupt_in_done = 1;
wake_up_interruptible(&dev->read_wait);
}
/**
* usb_alphatrack_interrupt_out_callback
*/
static void usb_alphatrack_interrupt_out_callback(struct urb *urb)
{
struct usb_alphatrack *dev = urb->context;
/* sync/async unlink faults aren't errors */
if (urb->status && !(urb->status == -ENOENT ||
urb->status == -ECONNRESET ||
urb->status == -ESHUTDOWN))
dbg_info(&dev->intf->dev,
"%s - nonzero write interrupt status received: %d\n",
__FUNCTION__, urb->status);
atomic_dec(&dev->writes_pending);
dev->interrupt_out_busy = 0;
wake_up_interruptible(&dev->write_wait);
}
/**
* usb_alphatrack_open
*/
static int usb_alphatrack_open(struct inode *inode, struct file *file)
{
struct usb_alphatrack *dev;
int subminor;
int retval = 0;
struct usb_interface *interface;
nonseekable_open(inode, file);
subminor = iminor(inode);
mutex_lock(&disconnect_mutex);
interface = usb_find_interface(&usb_alphatrack_driver, subminor);
if (!interface) {
err("%s - error, can't find device for minor %d\n",
__FUNCTION__, subminor);
retval = -ENODEV;
goto unlock_disconnect_exit;
}
dev = usb_get_intfdata(interface);
if (!dev) {
retval = -ENODEV;
goto unlock_disconnect_exit;
}
/* lock this device */
if (down_interruptible(&dev->sem)) {
retval = -ERESTARTSYS;
goto unlock_disconnect_exit;
}
/* allow opening only once */
if (dev->open_count) {
retval = -EBUSY;
goto unlock_exit;
}
dev->open_count = 1;
/* initialize in direction */
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_alphatrack_interrupt_in_callback,
dev,
dev->interrupt_in_interval);
dev->interrupt_in_running = 1;
dev->interrupt_in_done = 0;
dev->enable = 1;
dev->offline = 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->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);
unlock_disconnect_exit:
mutex_unlock(&disconnect_mutex);
return retval;
}
/**
* usb_alphatrack_release
*/
static int usb_alphatrack_release(struct inode *inode, struct file *file)
{
struct usb_alphatrack *dev;
int retval = 0;
dev = file->private_data;
if (dev == NULL) {
retval = -ENODEV;
goto exit;
}
if (down_interruptible(&dev->sem)) {
retval = -ERESTARTSYS;
goto exit;
}
if (dev->open_count != 1) {
retval = -ENODEV;
goto unlock_exit;
}
if (dev->intf == NULL) {
/* the device was unplugged before the file was released */
up(&dev->sem);
/* unlock here as usb_alphatrack_delete frees dev */
usb_alphatrack_delete(dev);
retval = -ENODEV;
goto exit;
}
/* wait until write transfer is finished */
if (dev->interrupt_out_busy)
wait_event_interruptible_timeout(dev->write_wait, !dev->interrupt_out_busy, 2 * HZ);
usb_alphatrack_abort_transfers(dev);
dev->open_count = 0;
unlock_exit:
up(&dev->sem);
exit:
return retval;
}
/**
* usb_alphatrack_poll
*/
static unsigned int usb_alphatrack_poll(struct file *file, poll_table *wait)
{
struct usb_alphatrack *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_alphatrack_read
*/
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;
int c = 0;
dev = file->private_data;
/* verify that we actually have some data to read */
if (count == 0)
goto exit;
/* lock this object */
if (down_interruptible(&dev->sem)) {
retval = -ERESTARTSYS;
goto exit;
}
/* 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;
}
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", __FUNCTION__,dev->ring_head,dev->ring_tail);
}
retval = c;
unlock_exit:
/* unlock the device */
up(&dev->sem);
exit:
return retval;
}
/**
* usb_alphatrack_write
*/
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;
int retval = 0;
dev = file->private_data;
/* verify that we actually have some data to write */
if (count == 0)
goto exit;
/* lock this object */
if (down_interruptible(&dev->sem)) {
retval = -ERESTARTSYS;
goto exit;
}
/* 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;
}
/* wait until previous transfer is finished */
if (dev->interrupt_out_busy) {
if (file->f_flags & O_NONBLOCK) {
retval = -EAGAIN;
goto unlock_exit;
}
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);
if (bytes_to_write < count)
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", __FUNCTION__, count, bytes_to_write);
if (copy_from_user(dev->interrupt_out_buffer, buffer, bytes_to_write)) {
retval = -EFAULT;
goto unlock_exit;
}
if (dev->interrupt_out_endpoint == NULL) {
err("Endpoint should not be be null! \n");
goto unlock_exit;
}
/* 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_alphatrack_interrupt_out_callback,
dev,
dev->interrupt_out_interval);
dev->interrupt_out_busy = 1;
atomic_inc(&dev->writes_pending);
wmb();
retval = usb_submit_urb(dev->interrupt_out_urb, GFP_KERNEL);
if (retval) {
dev->interrupt_out_busy = 0;
err("Couldn't submit interrupt_out_urb %d\n", retval);
atomic_dec(&dev->writes_pending);
goto unlock_exit;
}
retval = bytes_to_write;
unlock_exit:
/* unlock the device */
up(&dev->sem);
exit:
return retval;
}
/* 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,
};
/*
* usb class driver info in order to get a minor number from the usb core,
* and to have the device registered with the driver core
*/
static struct usb_class_driver usb_alphatrack_class = {
.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)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct usb_alphatrack *dev = NULL;
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
int i;
int true_size;
int retval = -ENOMEM;
/* allocate memory for our device state and intialize it */
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
dev_err(&intf->dev, "Out of memory\n");
goto exit;
}
init_MUTEX(&dev->sem);
dev->intf = intf;
init_waitqueue_head(&dev->read_wait);
init_waitqueue_head(&dev->write_wait);
iface_desc = intf->cur_altsetting;
/* set up the endpoint information */
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
endpoint = &iface_desc->endpoint[i].desc;
if (usb_endpoint_is_int_in(endpoint))
dev->interrupt_in_endpoint = endpoint;
if (usb_endpoint_is_int_out(endpoint))
dev->interrupt_out_endpoint = endpoint;
}
if (dev->interrupt_in_endpoint == NULL) {
dev_err(&intf->dev, "Interrupt in endpoint not found\n");
goto error;
}
if (dev->interrupt_out_endpoint == NULL)
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);
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; }
true_size = min(ring_buffer_size,RING_BUFFER_SIZE);
/* FIXME - there are more usb_alloc routines for dma correctness. Needed? */
// 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);
if (!dev->ring_buffer) {
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);
if (!dev->interrupt_in_buffer) {
dev_err(&intf->dev, "Couldn't allocate interrupt_in_buffer\n");
goto error;
}
dev->oldi_buffer = kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL);
if (!dev->oldi_buffer) {
dev_err(&intf->dev, "Couldn't allocate old buffer\n");
goto error;
}
dev->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!dev->interrupt_in_urb) {
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 !=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);
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);
if (!dev->write_buffer) {
dev_err(&intf->dev, "Couldn't allocate write_buffer \n");
goto error;
}
dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!dev->interrupt_out_urb) {
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;
/* we can register the device now, as it is ready */
usb_set_intfdata(intf, dev);
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");
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);
#if ALPHATRACK_HAVE_SYSFS
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_enable))) goto error;
if((retval = device_create_file(&intf->dev, &dev_attr_offline))) goto error;
/* exercise sysfs */
set_lights("32767"); // turn on all the lights
set_fader0("1023"); // Move fader to max
set_screen("INITIALIZING ALPHATRACK...");
set_lights("0");
set_fader0("0");
set_screen(" ");
#endif
exit:
return retval;
error:
usb_alphatrack_delete(dev);
return retval;
}
/**
* usb_alphatrack_disconnect
*
* Called by the usb core when the device is removed from the system.
*/
static void usb_alphatrack_disconnect(struct usb_interface *intf)
{
struct usb_alphatrack *dev;
int minor;
mutex_lock(&disconnect_mutex);
dev = usb_get_intfdata(intf);
usb_set_intfdata(intf, NULL);
down(&dev->sem);
minor = intf->minor;
/* give back our minor */
usb_deregister_dev(intf, &usb_alphatrack_class);
/* if the device is not opened, then we clean up right now */
if (!dev->open_count) {
up(&dev->sem);
usb_alphatrack_delete(dev);
} else {
dev->intf = NULL;
up(&dev->sem);
}
atomic_set(&dev->writes_pending,0);
mutex_unlock(&disconnect_mutex);
dev_info(&intf->dev, "Alphatrack Surface #%d now disconnected\n",
(minor - USB_ALPHATRACK_MINOR_BASE));
}
/* 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,
};
/**
* usb_alphatrack_init
*/
static int __init usb_alphatrack_init(void)
{
int retval;
/* 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);
return retval;
}
/**
* usb_alphatrack_exit
*/
static void __exit usb_alphatrack_exit(void)
{
/* deregister this driver with the USB subsystem */
usb_deregister(&usb_alphatrack_driver);
}
module_init(usb_alphatrack_init);
module_exit(usb_alphatrack_exit);

117
drivers/staging/frontier/alphatrack.h Normal file
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@ -0,0 +1,117 @@
#define show_set_bit(a) show_set_mbit(alphatrack,a)
#define show_set_cmd(a) show_set_mcmd(alphatrack,a)
#define show_set_int(a) show_set_mint(alphatrack,a)
#define show_set_char(a) show_set_mchar(alphatrack,a)
#define show_set_light(a) show_set_ebit(alphatrack,LightID,lights,a)
#define show_set_button(a) show_set_ebit(alphatrack,ButtonID,button,a)
struct alphatrack_icmd {
unsigned char cmd[12];
};
struct alphatrack_ocmd {
unsigned char cmd[8];
};
enum LightID {
LIGHT_EQ = 0,
LIGHT_OUT,
LIGHT_F2,
LIGHT_SEND,
LIGHT_IN,
LIGHT_F1,
LIGHT_PAN,
LIGHT_UNDEF1,
LIGHT_UNDEF2,
LIGHT_SHIFT,
LIGHT_TRACKMUTE,
LIGHT_TRACKSOLO,
LIGHT_TRACKREC,
LIGHT_READ,
LIGHT_WRITE,
LIGHT_ANYSOLO,
LIGHT_AUTO,
LIGHT_F4,
LIGHT_RECORD,
LIGHT_WINDOW,
LIGHT_PLUGIN,
LIGHT_F3,
LIGHT_LOOP
};
static const char *Lightname[] = { "eq",
"out",
"f2",
"send",
"in",
"f1",
"pan",
"undef1",
"undef2",
"shift",
"mute",
"tracksolo",
"trackrec",
"read",
"write",
"anysolo",
"auto",
"f4",
"record",
"window",
"plugin",
"f3",
"loop",
NULL };
#define BUTTONMASK_BATTERY 0x00004000
#define BUTTONMASK_BACKLIGHT 0x00008000
#define BUTTONMASK_FASTFORWARD 0x04000000
#define BUTTONMASK_TRACKMUTE 0x00040000
#define BUTTONMASK_TRACKSOLO 0x00800000
#define BUTTONMASK_TRACKLEFT 0x80000000
#define BUTTONMASK_RECORD 0x02000000
#define BUTTONMASK_SHIFT 0x20000000
#define BUTTONMASK_PUNCH 0x00800000
#define BUTTONMASK_TRACKRIGHT 0x00020000
#define BUTTONMASK_REWIND 0x01000000
#define BUTTONMASK_STOP 0x10000000
#define BUTTONMASK_LOOP 0x00010000
#define BUTTONMASK_TRACKREC 0x00001000
#define BUTTONMASK_PLAY 0x08000000
#define BUTTONMASK_TOUCH1 0x00000008
#define BUTTONMASK_TOUCH2 0x00000010
#define BUTTONMASK_TOUCH3 0x00000020
#define BUTTONMASK_PRESS1 0x00000009
#define BUTTONMASK_PRESS2 0x00008010
#define BUTTONMASK_PRESS3 0x00002020
// last 3 bytes are the slider position
// 40 is the actual slider moving, the most sig bits, and 3 lsb
#define BUTTONMASK_FLIP 0x40000000
#define BUTTONMASK_F1 0x00100000
#define BUTTONMASK_F2 0x00400000
#define BUTTONMASK_F3 0x00200000
#define BUTTONMASK_F4 0x00080000
#define BUTTONMASK_PAN 0x00000200
#define BUTTONMASK_SEND 0x00000800
#define BUTTONMASK_EQ 0x00004000
#define BUTTONMASK_PLUGIN 0x00000400
#define BUTTONMASK_AUTO 0x00000100
// #define BUTTONMASK_FOOTSWITCH FIXME
// Lookup. name. midi out. midi in.
struct buttonmap_t {
u32 mask;
short midi_in;
short midi_out;
char *name;
// void (*function) (buttonmap_t *);
void (*function) (void);
};

279
drivers/staging/frontier/alphatrack_sysfs.c Normal file
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@ -0,0 +1,279 @@
/* This was an attempt - ultimately proved pointless - at making a full fledged sysfs interface to the alphatrack */
/* won't even compile at present */
char *alphatrack_sys_margs;
spinlock_t alphatrack_sys_margs_lock;
struct alphatrack_attr {
struct attribute attr;
ssize_t (*show)(struct device *, char *);
ssize_t (*store)(struct device *, const char *, size_t);
};
#define ALPHATRACK_ATTR(name, mode, show, store) \
static struct alphatrack_attr alphatrack_attr_##name = __ATTR(name, mode, show, store)
/* now a great deal of callback code generation */
// FOREACH_LIGHT(show_set_light)
// FOREACH_BUTTON(show_set_button)
show_set_light(LIGHT_RECORD); show_set_light(LIGHT_EQ); show_set_light(LIGHT_OUT);
show_set_light(LIGHT_F2); show_set_light(LIGHT_SEND); show_set_light(LIGHT_IN);
show_set_light(LIGHT_F1); show_set_light(LIGHT_PAN); show_set_light(LIGHT_UNDEF1);
show_set_light(LIGHT_UNDEF2); show_set_light(LIGHT_SHIFT); show_set_light(LIGHT_TRACKMUTE);
show_set_light(LIGHT_TRACKSOLO); show_set_light(LIGHT_TRACKREC); show_set_light(LIGHT_READ);
show_set_light(LIGHT_WRITE); show_set_light(LIGHT_ANYSOLO); show_set_light(LIGHT_AUTO);
show_set_light(LIGHT_F4); show_set_light(LIGHT_RECORD); show_set_light(LIGHT_WINDOW);
show_set_light(LIGHT_PLUGIN); show_set_light(LIGHT_F3); show_set_light(LIGHT_LOOP);
show_set_opt(enable); show_set_opt(offline); show_set_opt(compress_fader); show_set_opt(dump_state);
show_set_int(fader); show_set_int(event);
static ssize_t show_lights(struct device *dev, struct device_attribute *attr, char *buf)
{
struct usb_interface *intf = to_usb_interface(dev);
struct usb_alphatrack *t = usb_get_intfdata(intf);
return sprintf(buf, "%d\n", t->lights);
}
static ssize_t set_lights(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct usb_interface *intf = to_usb_interface(dev);
struct usb_alphatrack *t = usb_get_intfdata(intf);
int temp = simple_strtoul(buf, NULL, 10);
t->lights = temp;
return count;
}
static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_lights, set_lights);
ALPHATRACK_ATTR(LightRecord, 0200, NULL, LightRecord_store);
static struct attribute *alphatrack_attrs[] = {
&alphatrack_attr_LightRecord.attr,
NULL,
};
static ssize_t alphatrack_attr_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct device *sdp = container_of(kobj, struct device, kobj);
struct alphatrack_attr *a = container_of(attr, struct alphatrack_attr, attr);
return a->show ? a->show(sdp, buf) : 0;
}
static ssize_t alphatrack_attr_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t len)
{
struct device *sdp = container_of(kobj, struct device, kobj);
struct alphatrack_attr *a = container_of(attr, struct alphatrack_attr, attr);
return a->store ? a->store(sdp, buf, len) : len;
}
static struct sysfs_ops alphatrack_attr_ops = {
.show = alphatrack_attr_show,
.store = alphatrack_attr_store,
};
static struct kobj_type alphatrack_ktype = {
.default_attrs = alphatrack_attrs,
.sysfs_ops = &alphatrack_attr_ops,
};
static struct kset alphatrack_kset = {
.subsys = &fs_subsys,
.kobj = {.name = "alphatrack"},
.ktype = &alphatrack_ktype,
};
static struct attribute *lights_attrs[] = {
&tune_attr_demote_secs.attr,
NULL,
};
static struct attribute_group leds_group = {
.name = "leds",
.attrs = lights_attrs,
};
static struct attribute_group faders_group = {
.name = "faders",
.attrs = faders_attrs,
};
static struct attribute_group lcds_group = {
.name = "lcds",
.attrs = lcds_attrs,
};
static struct attribute_group wheels_group = {
.name = "wheels",
.attrs = wheels_attrs,
};
static struct attribute_group touchsurfaces_group = {
.name = "touchsurfaces",
.attrs = touchsurfaces_attrs,
};
static struct attribute_group buttons_group = {
.name = "buttons",
.attrs = buttons_attrs,
};
int alphatrack_sys_fs_add(struct device *sdp)
{
int error;
sdp->kobj.kset = &alphatrack_kset;
sdp->kobj.ktype = &alphatrack_ktype;
// error = kobject_set_name(&sdp->kobj, "%s", sdp->sd_table_name);
error = kobject_set_name(&sdp->kobj, "%s", "alphatrack");
if (error)
goto fail;
error = kobject_register(&sdp->kobj);
if (error)
goto fail;
error = sysfs_create_group(&sdp->kobj, &lcds_group);
if (error)
goto fail_reg;
error = sysfs_create_group(&sdp->kobj, &leds_group);
if (error)
goto fail_leds;
error = sysfs_create_group(&sdp->kobj, &wheels_group);
if (error)
goto fail_wheels;
error = sysfs_create_group(&sdp->kobj, &faders_group);
if (error)
goto fail_lcds;
error = sysfs_create_group(&sdp->kobj, &buttons_group);
if (error)
goto fail_faders;
error = sysfs_create_group(&sdp->kobj, &touchsurfaces_group);
if (error)
goto fail_buttons;
return 0;
fail_buttons:
sysfs_remove_group(&sdp->kobj, &buttons_group);
fail_faders:
sysfs_remove_group(&sdp->kobj, &faders_group);
fail_wheels:
sysfs_remove_group(&sdp->kobj, &wheels_group);
fail_lcds:
sysfs_remove_group(&sdp->kobj, &lcds_group);
fail_leds:
sysfs_remove_group(&sdp->kobj, &leds_group);
fail_reg:
kobject_unregister(&sdp->kobj);
fail:
fs_err(sdp, "error %d adding sysfs files", error);
return error;
}
// int sysfs_create_link(struct kobject *kobj,
// struct kobject *target,
// char *name);
void alphatrack_sys_fs_del(struct device *sdp)
{
sysfs_remove_group(&sdp->kobj, &touchsurfaces_group);
sysfs_remove_group(&sdp->kobj, &buttons_group);
sysfs_remove_group(&sdp->kobj, &faders_group);
sysfs_remove_group(&sdp->kobj, &lcds_group);
sysfs_remove_group(&sdp->kobj, &wheels_group);
sysfs_remove_group(&sdp->kobj, &leds_group)
//void sysfs_remove_link(struct kobject *kobj, char *name);
kobject_unregister(&sdp->kobj);
}
int alphatrack_sys_init(void)
{
alphatrack_sys_margs = NULL;
spin_lock_init(&alphatrack_sys_margs_lock);
return kset_register(&alphatrack_kset);
}
void alphatrack_sys_uninit(void)
{
kfree(alphatrack_sys_margs);
kset_unregister(&alphatrack_kset);
}
//decl_subsys(char *name, struct kobj_type *type,
// struct kset_hotplug_ops *hotplug_ops);
/* End of all the crazy sysfs stuff */
#define SYSEX_INQUIRE signed char *SYSEX_INQUIRE[] = { 0xf0,0x7e,0x00,0x06,0x01,0x17 };
#define COMMAND(NAME,CONT_NAME) { BUTTONMASK_##NAME, ((0x90 << 8) | CONT_NAME), ((0x90 << 8) | CONT_NAME), #NAME, NAME ## _set }
#define ROTARY(NAME,CONT_NAME) { FADER_##NAME, ((0xb0 << 8) | CONT_NAME), ((0xb0 << 8) | CONT_NAME), #NAME, NAME ## _set }
#define SPOSITION(NAME,CONT_NAME) { BUTTON_##NAME ((0xe9 << 8) | CONT_NAME), #NAME, NAME ## _set }
#define ENDCOMMAND { 0,NULL,0,NULL,NULL}
/* Now that we've generated all our callbacks */
static struct buttonmap_t buttonmap[] =
{
COMMAND (REWIND,0x5b),
COMMAND (FASTFORWARD,0x5c),
COMMAND (STOP,0x5d),
COMMAND (PLAY,0x5e),
COMMAND (RECORD,0x5f),
COMMAND (SHIFT,0x46),
COMMAND (TRACKLEFT,0x57),
COMMAND (TRACKRIGHT,0x58),
COMMAND (LOOP,0x56),
COMMAND (FLIP,0x32),
COMMAND (MUTE,0x10),
COMMAND (F1,0x36),
COMMAND (F2,0x37),
COMMAND (F3,0x38),
COMMAND (F4,0x39),
COMMAND (SOLO,0x08),
COMMAND (ANY,0x73),
COMMAND (PAN,0x2a),
COMMAND (SEND,0x29),
COMMAND (EQ,0x2c),
COMMAND (PLUGIN,0x2b),
COMMAND (AUTO,0x4a),
COMMAND (TRACKREC,0x00),
COMMAND (FOOTSWITCH1,0x67),
COMMAND (KNOBTOUCH1,0x78),
COMMAND (KNOBPUSH1,0x20),
ROTARY (KNOBTURN1,0x10),
COMMAND (KNOBTOUCH2,0x79),
COMMAND (KNOBPUSH2,0x21),
ROTARY (KNOBTURN2,0x11),
COMMAND (KNOBTOUCH3,0x7a),
COMMAND (KNOBPUSH3,0x22),
ROTARY (KNOBTURN3,0x12),
COMMAND (FADERTOUCH1,0x68),
COMMAND (STRIPTOUCH1,0x74),
COMMAND (STRIPTOUCH2,0x6b),
SPOSITION (STRIPPOS1,0x00),
ENDCOMMAND
};

63
drivers/staging/frontier/frontier_compat.h Normal file
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@ -0,0 +1,63 @@
/* USB defines for older kernels */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
/**
* usb_endpoint_dir_out - check if the endpoint has OUT direction
* @epd: endpoint to be checked
*
* Returns true if the endpoint is of type OUT, otherwise it returns false.
*/
static inline int usb_endpoint_dir_out(const struct usb_endpoint_descriptor *epd)
{
return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT);
}
static inline int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
{
return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN);
}
/**
* usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type
* @epd: endpoint to be checked
*
* Returns true if the endpoint is of type interrupt, otherwise it returns
* false.
*/
static inline int usb_endpoint_xfer_int(const struct usb_endpoint_descriptor *epd)
{
return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
USB_ENDPOINT_XFER_INT);
}
/**
* usb_endpoint_is_int_in - check if the endpoint is interrupt IN
* @epd: endpoint to be checked
*
* Returns true if the endpoint has interrupt transfer type and IN direction,
* otherwise it returns false.
*/
static inline int usb_endpoint_is_int_in(const struct usb_endpoint_descriptor *epd)
{
return (usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd));
}
/**
* usb_endpoint_is_int_out - check if the endpoint is interrupt OUT
* @epd: endpoint to be checked
*
* Returns true if the endpoint has interrupt transfer type and OUT direction,
* otherwise it returns false.
*/
static inline int usb_endpoint_is_int_out(const struct usb_endpoint_descriptor *epd)
{
return (usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd));
}
#endif /* older kernel versions */

100
drivers/staging/frontier/surface_sysfs.h Normal file
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@ -0,0 +1,100 @@
/* If you are going to abuse the preprocessor, why not ABUSE the preprocessor?
I stuck this header in a separate file so I don't have to look at it */
// FIXME Need locking or atomic ops
#define show_set_mbit(dname,value,bit) \
static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
struct usb_##dname *t = usb_get_intfdata(intf); \
int temp = (1 && (t->value & (1 << bit))); \
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_##dname *t = usb_get_intfdata(intf); \
int temp = simple_strtoul(buf, NULL, 10); \
if(temp > 0) { long b = 1 << bit; t->value |= b; } \
else { long b = ~(1 << bit); t->value &= b ; \
return count; \
} \
static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
#define show_set_ebit(dname,enumname,value,bit) \
static ssize_t show_##bit(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
struct usb_##dname *t = usb_get_intfdata(intf); \
enum enumname l = bit; \
int temp = t->value & (1 << l); \
return sprintf(buf, "%d\n", temp); \
} \
static ssize_t set_##bit(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
{ \
struct usb_interface *intf = to_usb_interface(dev); \
struct usb_##dname *t = usb_get_intfdata(intf); \
int temp = simple_strtoul(buf, NULL, 10); \
enum enumname l = bit;\
long b = 1 << l; \
if(temp > 0) { t->value |= b; } \
else { t->value &= ~b ; \
return count; \
} \
static DEVICE_ATTR(value, S_IWUGO | S_IRUGO, show_##value, set_##value);
// FIXME FOR CORRECTLY SETTING HEX from a string
#define show_set_mcmd(dname,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_##dname *t = usb_get_intfdata(intf); \
int count = 0;\
int i; \
for (i = 0,i<sizeof(dname); i++) count += snprintf(buf, "%02x",t->dname[i]); \
return(count);\
} \
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_##dname *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_mint(dname,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_##dname *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_##dname *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_mchar(dname,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_##dname *t = usb_get_intfdata(intf); \
return sprintf(buf, "%c\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_##dname *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);

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drivers/staging/frontier/tranzport.c Normal file
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