// SPDX-License-Identifier: GPL-2.0+
/*
* usbduxsigma.c
* Copyright (C) 2011-2015 Bernd Porr, [email protected]
*/
/*
* Driver: usbduxsigma
* Description: University of Stirling USB DAQ & INCITE Technology Limited
* Devices: [ITL] USB-DUX-SIGMA (usbduxsigma)
* Author: Bernd Porr <[email protected]>
* Updated: 20 July 2015
* Status: stable
*/
/*
* I must give credit here to Chris Baugher who
* wrote the driver for AT-MIO-16d. I used some parts of this
* driver. I also must give credits to David Brownell
* who supported me with the USB development.
*
* Note: the raw data from the A/D converter is 24 bit big endian
* anything else is little endian to/from the dux board
*
*
* Revision history:
* 0.1: initial version
* 0.2: all basic functions implemented, digital I/O only for one port
* 0.3: proper vendor ID and driver name
* 0.4: fixed D/A voltage range
* 0.5: various bug fixes, health check at startup
* 0.6: corrected wrong input range
* 0.7: rewrite code that urb->interval is always 1
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/fcntl.h>
#include <linux/compiler.h>
#include <linux/unaligned.h>
#include <linux/comedi/comedi_usb.h>
/* timeout for the USB-transfer in ms*/
#define BULK_TIMEOUT 1000
/* constants for "firmware" upload and download */
#define FIRMWARE "usbduxsigma_firmware.bin"
#define FIRMWARE_MAX_LEN 0x4000
#define USBDUXSUB_FIRMWARE 0xa0
#define VENDOR_DIR_IN 0xc0
#define VENDOR_DIR_OUT 0x40
/* internal addresses of the 8051 processor */
#define USBDUXSUB_CPUCS 0xE600
/* 300Hz max frequ under PWM */
#define MIN_PWM_PERIOD ((long)(1E9 / 300))
/* Default PWM frequency */
#define PWM_DEFAULT_PERIOD ((long)(1E9 / 100))
/* Number of channels (16 AD and offset)*/
#define NUMCHANNELS 16
/* Size of one A/D value */
#define SIZEADIN ((sizeof(u32)))
/*
* Size of the async input-buffer IN BYTES, the DIO state is transmitted
* as the first byte.
*/
#define SIZEINBUF (((NUMCHANNELS + 1) * SIZEADIN))
/* 16 bytes. */
#define SIZEINSNBUF 16
/* Number of DA channels */
#define NUMOUTCHANNELS 8
/* size of one value for the D/A converter: channel and value */
#define SIZEDAOUT ((sizeof(u8) + sizeof(uint16_t)))
/*
* Size of the output-buffer in bytes
* Actually only the first 4 triplets are used but for the
* high speed mode we need to pad it to 8 (microframes).
*/
#define SIZEOUTBUF ((8 * SIZEDAOUT))
/*
* Size of the buffer for the dux commands: just now max size is determined
* by the analogue out + command byte + panic bytes...
*/
#define SIZEOFDUXBUFFER ((8 * SIZEDAOUT + 2))
/* Number of in-URBs which receive the data: min=2 */
#define NUMOFINBUFFERSFULL 5
/* Number of out-URBs which send the data: min=2 */
#define NUMOFOUTBUFFERSFULL 5
/* Number of in-URBs which receive the data: min=5 */
/* must have more buffers due to buggy USB ctr */
#define NUMOFINBUFFERSHIGH 10
/* Number of out-URBs which send the data: min=5 */
/* must have more buffers due to buggy USB ctr */
#define NUMOFOUTBUFFERSHIGH 10
/* number of retries to get the right dux command */
#define RETRIES 10
/* bulk transfer commands to usbduxsigma */
#define USBBUXSIGMA_AD_CMD 9
#define USBDUXSIGMA_DA_CMD 1
#define USBDUXSIGMA_DIO_CFG_CMD 2
#define USBDUXSIGMA_DIO_BITS_CMD 3
#define USBDUXSIGMA_SINGLE_AD_CMD 4
#define USBDUXSIGMA_PWM_ON_CMD 7
#define USBDUXSIGMA_PWM_OFF_CMD 8
static const struct comedi_lrange usbduxsigma_ai_range = {
1, {
BIP_RANGE(2.5 * 0x800000 / 0x780000 / 2.0)
}
};
struct usbduxsigma_private {
/* actual number of in-buffers */
int n_ai_urbs;
/* actual number of out-buffers */
int n_ao_urbs;
/* ISO-transfer handling: buffers */
struct urb **ai_urbs;
struct urb **ao_urbs;
/* pwm-transfer handling */
struct urb *pwm_urb;
/* PWM period */
unsigned int pwm_period;
/* PWM internal delay for the GPIF in the FX2 */
u8 pwm_delay;
/* size of the PWM buffer which holds the bit pattern */
int pwm_buf_sz;
/* input buffer for the ISO-transfer */
__be32 *in_buf;
/* input buffer for single insn */
u8 *insn_buf;
unsigned high_speed:1;
unsigned ai_cmd_running:1;
unsigned ao_cmd_running:1;
unsigned pwm_cmd_running:1;
/* time between samples in units of the timer */
unsigned int ai_timer;
unsigned int ao_timer;
/* counter between acquisitions */
unsigned int ai_counter;
unsigned int ao_counter;
/* interval in frames/uframes */
unsigned int ai_interval;
/* commands */
u8 *dux_commands;
struct mutex mut;
};
static void usbduxsigma_unlink_urbs(struct urb **urbs, int num_urbs)
{
int i;
for (i = 0; i < num_urbs; i++)
usb_kill_urb(urbs[i]);
}
static void usbduxsigma_ai_stop(struct comedi_device *dev, int do_unlink)
{
struct usbduxsigma_private *devpriv = dev->private;
if (do_unlink && devpriv->ai_urbs)
usbduxsigma_unlink_urbs(devpriv->ai_urbs, devpriv->n_ai_urbs);
devpriv->ai_cmd_running = 0;
}
static int usbduxsigma_ai_cancel(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct usbduxsigma_private *devpriv = dev->private;
mutex_lock(&devpriv->mut);
/* unlink only if it is really running */
usbduxsigma_ai_stop(dev, devpriv->ai_cmd_running);
mutex_unlock(&devpriv->mut);
return 0;
}
static void usbduxsigma_ai_handle_urb(struct comedi_device *dev,
struct comedi_subdevice *s,
struct urb *urb)
{
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_async *async = s->async;
struct comedi_cmd *cmd = &async->cmd;
u32 val;
int ret;
int i;
if ((urb->actual_length > 0) && (urb->status != -EXDEV)) {
devpriv->ai_counter--;
if (devpriv->ai_counter == 0) {
devpriv->ai_counter = devpriv->ai_timer;
/*
* Get the data from the USB bus and hand it over
* to comedi. Note, first byte is the DIO state.
*/
for (i = 0; i < cmd->chanlist_len; i++) {
val = be32_to_cpu(devpriv->in_buf[i + 1]);
val &= 0x00ffffff; /* strip status byte */
val = comedi_offset_munge(s, val);
if (!comedi_buf_write_samples(s, &val, 1))
return;
}
if (cmd->stop_src == TRIG_COUNT &&
async->scans_done >= cmd->stop_arg)
async->events |= COMEDI_CB_EOA;
}
}
/* if command is still running, resubmit urb */
if (!(async->events & COMEDI_CB_CANCEL_MASK)) {
urb->dev = comedi_to_usb_dev(dev);
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret < 0) {
dev_err(dev->class_dev, "urb resubmit failed (%d)\n",
ret);
if (ret == -EL2NSYNC)
dev_err(dev->class_dev,
"buggy USB host controller or bug in IRQ handler\n");
async->events |= COMEDI_CB_ERROR;
}
}
}
static void usbduxsigma_ai_urb_complete(struct urb *urb)
{
struct comedi_device *dev = urb->context;
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_subdevice *s = dev->read_subdev;
struct comedi_async *async = s->async;
/* exit if not running a command, do not resubmit urb */
if (!devpriv->ai_cmd_running)
return;
switch (urb->status) {
case 0:
/* copy the result in the transfer buffer */
memcpy(devpriv->in_buf, urb->transfer_buffer, SIZEINBUF);
usbduxsigma_ai_handle_urb(dev, s, urb);
break;
case -EILSEQ:
/*
* error in the ISOchronous data
* we don't copy the data into the transfer buffer
* and recycle the last data byte
*/
dev_dbg(dev->class_dev, "CRC error in ISO IN stream\n");
usbduxsigma_ai_handle_urb(dev, s, urb);
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
case -ECONNABORTED:
/* happens after an unlink command */
async->events |= COMEDI_CB_ERROR;
break;
default:
/* a real error */
dev_err(dev->class_dev, "non-zero urb status (%d)\n",
urb->status);
async->events |= COMEDI_CB_ERROR;
break;
}
/*
* comedi_handle_events() cannot be used in this driver. The (*cancel)
* operation would unlink the urb.
*/
if (async->events & COMEDI_CB_CANCEL_MASK)
usbduxsigma_ai_stop(dev, 0);
comedi_event(dev, s);
}
static void usbduxsigma_ao_stop(struct comedi_device *dev, int do_unlink)
{
struct usbduxsigma_private *devpriv = dev->private;
if (do_unlink && devpriv->ao_urbs)
usbduxsigma_unlink_urbs(devpriv->ao_urbs, devpriv->n_ao_urbs);
devpriv->ao_cmd_running = 0;
}
static int usbduxsigma_ao_cancel(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct usbduxsigma_private *devpriv = dev->private;
mutex_lock(&devpriv->mut);
/* unlink only if it is really running */
usbduxsigma_ao_stop(dev, devpriv->ao_cmd_running);
mutex_unlock(&devpriv->mut);
return 0;
}
static void usbduxsigma_ao_handle_urb(struct comedi_device *dev,
struct comedi_subdevice *s,
struct urb *urb)
{
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_async *async = s->async;
struct comedi_cmd *cmd = &async->cmd;
u8 *datap;
int ret;
int i;
devpriv->ao_counter--;
if (devpriv->ao_counter == 0) {
devpriv->ao_counter = devpriv->ao_timer;
if (cmd->stop_src == TRIG_COUNT &&
async->scans_done >= cmd->stop_arg) {
async->events |= COMEDI_CB_EOA;
return;
}
/* transmit data to the USB bus */
datap = urb->transfer_buffer;
*datap++ = cmd->chanlist_len;
for (i = 0; i < cmd->chanlist_len; i++) {
unsigned int chan = CR_CHAN(cmd->chanlist[i]);
unsigned short val;
if (!comedi_buf_read_samples(s, &val, 1)) {
dev_err(dev->class_dev, "buffer underflow\n");
async->events |= COMEDI_CB_OVERFLOW;
return;
}
*datap++ = val;
*datap++ = chan;
s->readback[chan] = val;
}
}
/* if command is still running, resubmit urb */
if (!(async->events & COMEDI_CB_CANCEL_MASK)) {
urb->transfer_buffer_length = SIZEOUTBUF;
urb->dev = comedi_to_usb_dev(dev);
urb->status = 0;
urb->interval = 1; /* (u)frames */
urb->number_of_packets = 1;
urb->iso_frame_desc[0].offset = 0;
urb->iso_frame_desc[0].length = SIZEOUTBUF;
urb->iso_frame_desc[0].status = 0;
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret < 0) {
dev_err(dev->class_dev, "urb resubmit failed (%d)\n",
ret);
if (ret == -EL2NSYNC)
dev_err(dev->class_dev,
"buggy USB host controller or bug in IRQ handler\n");
async->events |= COMEDI_CB_ERROR;
}
}
}
static void usbduxsigma_ao_urb_complete(struct urb *urb)
{
struct comedi_device *dev = urb->context;
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_subdevice *s = dev->write_subdev;
struct comedi_async *async = s->async;
/* exit if not running a command, do not resubmit urb */
if (!devpriv->ao_cmd_running)
return;
switch (urb->status) {
case 0:
usbduxsigma_ao_handle_urb(dev, s, urb);
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
case -ECONNABORTED:
/* happens after an unlink command */
async->events |= COMEDI_CB_ERROR;
break;
default:
/* a real error */
dev_err(dev->class_dev, "non-zero urb status (%d)\n",
urb->status);
async->events |= COMEDI_CB_ERROR;
break;
}
/*
* comedi_handle_events() cannot be used in this driver. The (*cancel)
* operation would unlink the urb.
*/
if (async->events & COMEDI_CB_CANCEL_MASK)
usbduxsigma_ao_stop(dev, 0);
comedi_event(dev, s);
}
static int usbduxsigma_submit_urbs(struct comedi_device *dev,
struct urb **urbs, int num_urbs,
int input_urb)
{
struct usb_device *usb = comedi_to_usb_dev(dev);
struct urb *urb;
int ret;
int i;
/* Submit all URBs and start the transfer on the bus */
for (i = 0; i < num_urbs; i++) {
urb = urbs[i];
/* in case of a resubmission after an unlink... */
if (input_urb)
urb->interval = 1;
urb->context = dev;
urb->dev = usb;
urb->status = 0;
urb->transfer_flags = URB_ISO_ASAP;
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret)
return ret;
}
return 0;
}
static int usbduxsigma_chans_to_interval(int num_chan)
{
if (num_chan <= 2)
return 2; /* 4kHz */
if (num_chan <= 8)
return 4; /* 2kHz */
return 8; /* 1kHz */
}
static int usbduxsigma_ai_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_cmd *cmd)
{
struct usbduxsigma_private *devpriv = dev->private;
int high_speed = devpriv->high_speed;
int interval = usbduxsigma_chans_to_interval(cmd->chanlist_len);
unsigned int tmp;
int err = 0;
/* Step 1 : check if triggers are trivially valid */
err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_TIMER);
err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_NOW);
err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
if (err)
return 1;
/* Step 2a : make sure trigger sources are unique */
err |= comedi_check_trigger_is_unique(cmd->start_src);
err |= comedi_check_trigger_is_unique(cmd->stop_src);
/* Step 2b : and mutually compatible */
if (err)
return 2;
/* Step 3: check if arguments are trivially valid */
err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
if (high_speed) {
/*
* In high speed mode microframes are possible.
* However, during one microframe we can roughly
* sample two channels. Thus, the more channels
* are in the channel list the more time we need.
*/
err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg,
(125000 * interval));
} else {
/* full speed */
/* 1kHz scans every USB frame */
err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg,
1000000);
}
err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
cmd->chanlist_len);
if (cmd->stop_src == TRIG_COUNT)
err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
else /* TRIG_NONE */
err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
if (err)
return 3;
/* Step 4: fix up any arguments */
tmp = rounddown(cmd->scan_begin_arg, high_speed ? 125000 : 1000000);
err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, tmp);
if (err)
return 4;
return 0;
}
/*
* creates the ADC command for the MAX1271
* range is the range value from comedi
*/
static void create_adc_command(unsigned int chan,
u8 *muxsg0, u8 *muxsg1)
{
if (chan < 8)
(*muxsg0) = (*muxsg0) | (1 << chan);
else if (chan < 16)
(*muxsg1) = (*muxsg1) | (1 << (chan - 8));
}
static int usbbuxsigma_send_cmd(struct comedi_device *dev, int cmd_type)
{
struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbduxsigma_private *devpriv = dev->private;
int nsent;
devpriv->dux_commands[0] = cmd_type;
return usb_bulk_msg(usb, usb_sndbulkpipe(usb, 1),
devpriv->dux_commands, SIZEOFDUXBUFFER,
&nsent, BULK_TIMEOUT);
}
static int usbduxsigma_receive_cmd(struct comedi_device *dev, int command)
{
struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbduxsigma_private *devpriv = dev->private;
int nrec;
int ret;
int i;
for (i = 0; i < RETRIES; i++) {
ret = usb_bulk_msg(usb, usb_rcvbulkpipe(usb, 8),
devpriv->insn_buf, SIZEINSNBUF,
&nrec, BULK_TIMEOUT);
if (ret < 0)
return ret;
if (devpriv->insn_buf[0] == command)
return 0;
}
/*
* This is only reached if the data has been requested a
* couple of times and the command was not received.
*/
return -EFAULT;
}
static int usbduxsigma_ai_inttrig(struct comedi_device *dev,
struct comedi_subdevice *s,
unsigned int trig_num)
{
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
int ret;
if (trig_num != cmd->start_arg)
return -EINVAL;
mutex_lock(&devpriv->mut);
if (!devpriv->ai_cmd_running) {
devpriv->ai_cmd_running = 1;
ret = usbduxsigma_submit_urbs(dev, devpriv->ai_urbs,
devpriv->n_ai_urbs, 1);
if (ret < 0) {
devpriv->ai_cmd_running = 0;
mutex_unlock(&devpriv->mut);
return ret;
}
s->async->inttrig = NULL;
}
mutex_unlock(&devpriv->mut);
return 1;
}
static int usbduxsigma_ai_cmd(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
unsigned int len = cmd->chanlist_len;
u8 muxsg0 = 0;
u8 muxsg1 = 0;
u8 sysred = 0;
int ret;
int i;
mutex_lock(&devpriv->mut);
if (devpriv->high_speed) {
/*
* every 2 channels get a time window of 125us. Thus, if we
* sample all 16 channels we need 1ms. If we sample only one
* channel we need only 125us
*/
unsigned int interval = usbduxsigma_chans_to_interval(len);
devpriv->ai_interval = interval;
devpriv->ai_timer = cmd->scan_begin_arg / (125000 * interval);
} else {
/* interval always 1ms */
devpriv->ai_interval = 1;
devpriv->ai_timer = cmd->scan_begin_arg / 1000000;
}
for (i = 0; i < len; i++) {
unsigned int chan = CR_CHAN(cmd->chanlist[i]);
create_adc_command(chan, &muxsg0, &muxsg1);
}
devpriv->dux_commands[1] = devpriv->ai_interval;
devpriv->dux_commands[2] = len; /* num channels per time step */
devpriv->dux_commands[3] = 0x12; /* CONFIG0 */
devpriv->dux_commands[4] = 0x03; /* CONFIG1: 23kHz sample, delay 0us */
devpriv->dux_commands[5] = 0x00; /* CONFIG3: diff. channels off */
devpriv->dux_commands[6] = muxsg0;
devpriv->dux_commands[7] = muxsg1;
devpriv->dux_commands[8] = sysred;
ret = usbbuxsigma_send_cmd(dev, USBBUXSIGMA_AD_CMD);
if (ret < 0) {
mutex_unlock(&devpriv->mut);
return ret;
}
devpriv->ai_counter = devpriv->ai_timer;
if (cmd->start_src == TRIG_NOW) {
/* enable this acquisition operation */
devpriv->ai_cmd_running = 1;
ret = usbduxsigma_submit_urbs(dev, devpriv->ai_urbs,
devpriv->n_ai_urbs, 1);
if (ret < 0) {
devpriv->ai_cmd_running = 0;
mutex_unlock(&devpriv->mut);
return ret;
}
s->async->inttrig = NULL;
} else { /* TRIG_INT */
s->async->inttrig = usbduxsigma_ai_inttrig;
}
mutex_unlock(&devpriv->mut);
return 0;
}
static int usbduxsigma_ai_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct usbduxsigma_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
u8 muxsg0 = 0;
u8 muxsg1 = 0;
u8 sysred = 0;
int ret;
int i;
mutex_lock(&devpriv->mut);
if (devpriv->ai_cmd_running) {
mutex_unlock(&devpriv->mut);
return -EBUSY;
}
create_adc_command(chan, &muxsg0, &muxsg1);
/* Mode 0 is used to get a single conversion on demand */
devpriv->dux_commands[1] = 0x16; /* CONFIG0: chopper on */
devpriv->dux_commands[2] = 0x80; /* CONFIG1: 2kHz sampling rate */
devpriv->dux_commands[3] = 0x00; /* CONFIG3: diff. channels off */
devpriv->dux_commands[4] = muxsg0;
devpriv->dux_commands[5] = muxsg1;
devpriv->dux_commands[6] = sysred;
/* adc commands */
ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_SINGLE_AD_CMD);
if (ret < 0) {
mutex_unlock(&devpriv->mut);
return ret;
}
for (i = 0; i < insn->n; i++) {
u32 val;
ret = usbduxsigma_receive_cmd(dev, USBDUXSIGMA_SINGLE_AD_CMD);
if (ret < 0) {
mutex_unlock(&devpriv->mut);
return ret;
}
/* 32 bits big endian from the A/D converter */
val = be32_to_cpu(get_unaligned((__be32
*)(devpriv->insn_buf + 1)));
val &= 0x00ffffff; /* strip status byte */
data[i] = comedi_offset_munge(s, val);
}
mutex_unlock(&devpriv->mut);
return insn->n;
}
static int usbduxsigma_ao_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct usbduxsigma_private *devpriv = dev->private;
int ret;
mutex_lock(&devpriv->mut);
ret = comedi_readback_insn_read(dev, s, insn, data);
mutex_unlock(&devpriv->mut);
return ret;
}
static int usbduxsigma_ao_insn_write(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct usbduxsigma_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
int ret;
int i;
mutex_lock(&devpriv->mut);
if (devpriv->ao_cmd_running) {
mutex_unlock(&devpriv->mut);
return -EBUSY;
}
for (i = 0; i < insn->n; i++) {
devpriv->dux_commands[1] = 1; /* num channels */
devpriv->dux_commands[2] = data[i]; /* value */
devpriv->dux_commands[3] = chan; /* channel number */
ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_DA_CMD);
if (ret < 0) {
mutex_unlock(&devpriv->mut);
return ret;
}
s->readback[chan] = data[i];
}
mutex_unlock(&devpriv->mut);
return insn->n;
}
static int usbduxsigma_ao_inttrig(struct comedi_device *dev,
struct comedi_subdevice *s,
unsigned int trig_num)
{
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
int ret;
if (trig_num != cmd->start_arg)
return -EINVAL;
mutex_lock(&devpriv->mut);
if (!devpriv->ao_cmd_running) {
devpriv->ao_cmd_running = 1;
ret = usbduxsigma_submit_urbs(dev, devpriv->ao_urbs,
devpriv->n_ao_urbs, 0);
if (ret < 0) {
devpriv->ao_cmd_running = 0;
mutex_unlock(&devpriv->mut);
return ret;
}
s->async->inttrig = NULL;
}
mutex_unlock(&devpriv->mut);
return 1;
}
static int usbduxsigma_ao_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_cmd *cmd)
{
struct usbduxsigma_private *devpriv = dev->private;
unsigned int tmp;
int err = 0;
/* Step 1 : check if triggers are trivially valid */
err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
/*
* For now, always use "scan" timing with all channels updated at once
* (cmd->scan_begin_src == TRIG_TIMER, cmd->convert_src == TRIG_NOW).
*
* In a future version, "convert" timing with channels updated
* indivually may be supported in high speed mode
* (cmd->scan_begin_src == TRIG_FOLLOW, cmd->convert_src == TRIG_TIMER).
*/
err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_TIMER);
err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_NOW);
err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
if (err) {
mutex_unlock(&devpriv->mut);
return 1;
}
/* Step 2a : make sure trigger sources are unique */
err |= comedi_check_trigger_is_unique(cmd->start_src);
err |= comedi_check_trigger_is_unique(cmd->stop_src);
/* Step 2b : and mutually compatible */
if (err)
return 2;
/* Step 3: check if arguments are trivially valid */
err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg, 1000000);
err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
cmd->chanlist_len);
if (cmd->stop_src == TRIG_COUNT)
err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
else /* TRIG_NONE */
err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
if (err)
return 3;
/* Step 4: fix up any arguments */
tmp = rounddown(cmd->scan_begin_arg, 1000000);
err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, tmp);
if (err)
return 4;
return 0;
}
static int usbduxsigma_ao_cmd(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct usbduxsigma_private *devpriv = dev->private;
struct comedi_cmd *cmd = &s->async->cmd;
int ret;
mutex_lock(&devpriv->mut);
/*
* For now, only "scan" timing is supported. A future version may
* support "convert" timing in high speed mode.
*
* Timing of the scan: every 1ms all channels updated at once.
*/
devpriv->ao_timer = cmd->scan_begin_arg / 1000000;
devpriv->ao_counter = devpriv->ao_timer;
if (cmd->start_src == TRIG_NOW) {
/* enable this acquisition operation */
devpriv->ao_cmd_running = 1;
ret = usbduxsigma_submit_urbs(dev, devpriv->ao_urbs,
devpriv->n_ao_urbs, 0);
if (ret < 0) {
devpriv->ao_cmd_running = 0;
mutex_unlock(&devpriv->mut);
return ret;
}
s->async->inttrig = NULL;
} else { /* TRIG_INT */
s->async->inttrig = usbduxsigma_ao_inttrig;
}
mutex_unlock(&devpriv->mut);
return 0;
}
static int usbduxsigma_dio_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
int ret;
ret = comedi_dio_insn_config(dev, s, insn, data, 0);
if (ret)
return ret;
/*
* We don't tell the firmware here as it would take 8 frames
* to submit the information. We do it in the (*insn_bits).
*/
return insn->n;
}
static int usbduxsigma_dio_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct usbduxsigma_private *devpriv = dev->private;
int ret;
mutex_lock(&devpriv->mut);
comedi_dio_update_state(s, data);
/* Always update the hardware. See the (*insn_config). */
devpriv->dux_commands[1] = s->io_bits & 0xff;
devpriv->dux_commands[4] = s->state & 0xff;
devpriv->dux_commands[2] = (s->io_bits >> 8) & 0xff;
devpriv->dux_commands[5] = (s->state >> 8) & 0xff;
devpriv->dux_commands[3] = (s->io_bits >> 16) & 0xff;
devpriv->dux_commands[6] = (s->state >> 16) & 0xff;
ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_DIO_BITS_CMD);
if (ret < 0)
goto done;
ret = usbduxsigma_receive_cmd(dev, USBDUXSIGMA_DIO_BITS_CMD);
if (ret < 0)
goto done;
s->state = devpriv->insn_buf[1] |
(devpriv->insn_buf[2] << 8) |
(devpriv->insn_buf[3] << 16);
data[1] = s->state;
ret = insn->n;
done:
mutex_unlock(&devpriv->mut);
return ret;
}
static void usbduxsigma_pwm_stop(struct comedi_device *dev, int do_unlink)
{
struct usbduxsigma_private *devpriv = dev->private;
if (do_unlink) {
if (devpriv->pwm_urb)
usb_kill_urb(devpriv->pwm_urb);
}
devpriv->pwm_cmd_running = 0;
}
static int usbduxsigma_pwm_cancel(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct usbduxsigma_private *devpriv = dev->private;
/* unlink only if it is really running */
usbduxsigma_pwm_stop(dev, devpriv->pwm_cmd_running);
return usbbuxsigma_send_cmd(dev, USBDUXSIGMA_PWM_OFF_CMD);
}
static void usbduxsigma_pwm_urb_complete(struct urb *urb)
{
struct comedi_device *dev = urb->context;
struct usbduxsigma_private *devpriv = dev->private;
int ret;
switch (urb->status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
case -ECONNABORTED:
/* happens after an unlink command */
if (devpriv->pwm_cmd_running)
usbduxsigma_pwm_stop(dev, 0); /* w/o unlink */
return;
default:
/* a real error */
if (devpriv->pwm_cmd_running) {
dev_err(dev->class_dev, "non-zero urb status (%d)\n",
urb->status);
usbduxsigma_pwm_stop(dev, 0); /* w/o unlink */
}
return;
}
if (!devpriv->pwm_cmd_running)
return;
urb->transfer_buffer_length = devpriv->pwm_buf_sz;
urb->dev = comedi_to_usb_dev(dev);
urb->status = 0;
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret < 0) {
dev_err(dev->class_dev, "urb resubmit failed (%d)\n", ret);
if (ret == -EL2NSYNC)
dev_err(dev->class_dev,
"buggy USB host controller or bug in IRQ handler\n");
usbduxsigma_pwm_stop(dev, 0); /* w/o unlink */
}
}
static int usbduxsigma_submit_pwm_urb(struct comedi_device *dev)
{
struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbduxsigma_private *devpriv = dev->private;
struct urb *urb = devpriv->pwm_urb;
/* in case of a resubmission after an unlink... */
usb_fill_bulk_urb(urb, usb, usb_sndbulkpipe(usb, 4),
urb->transfer_buffer, devpriv->pwm_buf_sz,
usbduxsigma_pwm_urb_complete, dev);
return usb_submit_urb(urb, GFP_ATOMIC);
}
static int usbduxsigma_pwm_period(struct comedi_device *dev,
struct comedi_subdevice *s,
unsigned int period)
{
struct usbduxsigma_private *devpriv = dev->private;
int fx2delay;
if (period < MIN_PWM_PERIOD)
return -EAGAIN;
fx2delay = (period / (6 * 512 * 1000 / 33)) - 6;
if (fx2delay > 255)
return -EAGAIN;
devpriv->pwm_delay = fx2delay;
devpriv->pwm_period = period;
return 0;
}
static int usbduxsigma_pwm_start(struct comedi_device *dev,
struct comedi_subdevice *s)
{
struct usbduxsigma_private *devpriv = dev->private;
int ret;
if (devpriv->pwm_cmd_running)
return 0;
devpriv->dux_commands[1] = devpriv->pwm_delay;
ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_PWM_ON_CMD);
if (ret < 0)
return ret;
memset(devpriv->pwm_urb->transfer_buffer, 0, devpriv->pwm_buf_sz);
devpriv->pwm_cmd_running = 1;
ret = usbduxsigma_submit_pwm_urb(dev);
if (ret < 0) {
devpriv->pwm_cmd_running = 0;
return ret;
}
return 0;
}
static void usbduxsigma_pwm_pattern(struct comedi_device *dev,
struct comedi_subdevice *s,
unsigned int chan,
unsigned int value,
unsigned int sign)
{
struct usbduxsigma_private *devpriv = dev->private;
char pwm_mask = (1 << chan); /* DIO bit for the PWM data */
char sgn_mask = (16 << chan); /* DIO bit for the sign */
char *buf = (char *)(devpriv->pwm_urb->transfer_buffer);
int szbuf = devpriv->pwm_buf_sz;
int i;
for (i = 0; i < szbuf; i++) {
char c = *buf;
c &= ~pwm_mask;
if (i < value)
c |= pwm_mask;
if (!sign)
c &= ~sgn_mask;
else
c |= sgn_mask;
*buf++ = c;
}
}
static int usbduxsigma_pwm_write(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
unsigned int chan = CR_CHAN(insn->chanspec);
/*
* It doesn't make sense to support more than one value here
* because it would just overwrite the PWM buffer.
*/
if (insn->n != 1)
return -EINVAL;
/*
* The sign is set via a special INSN only, this gives us 8 bits
* for normal operation, sign is 0 by default.
*/
usbduxsigma_pwm_pattern(dev, s, chan, data[0], 0);
return insn->n;
}
static int usbduxsigma_pwm_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct usbduxsigma_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
switch (data[0]) {
case INSN_CONFIG_ARM:
/*
* if not zero the PWM is limited to a certain time which is
* not supported here
*/
if (data[1] != 0)
return -EINVAL;
return usbduxsigma_pwm_start(dev, s);
case INSN_CONFIG_DISARM:
return usbduxsigma_pwm_cancel(dev, s);
case INSN_CONFIG_GET_PWM_STATUS:
data[1] = devpriv->pwm_cmd_running;
return 0;
case INSN_CONFIG_PWM_SET_PERIOD:
return usbduxsigma_pwm_period(dev, s, data[1]);
case INSN_CONFIG_PWM_GET_PERIOD:
data[1] = devpriv->pwm_period;
return 0;
case INSN_CONFIG_PWM_SET_H_BRIDGE:
/*
* data[1] = value
* data[2] = sign (for a relay)
*/
usbduxsigma_pwm_pattern(dev, s, chan, data[1], (data[2] != 0));
return 0;
case INSN_CONFIG_PWM_GET_H_BRIDGE:
/* values are not kept in this driver, nothing to return */
return -EINVAL;
}
return -EINVAL;
}
static int usbduxsigma_getstatusinfo(struct comedi_device *dev, int chan)
{
struct comedi_subdevice *s = dev->read_subdev;
struct usbduxsigma_private *devpriv = dev->private;
u8 sysred;
u32 val;
int ret;
switch (chan) {
default:
case 0:
sysred = 0; /* ADC zero */
break;
case 1:
sysred = 1; /* ADC offset */
break;
case 2:
sysred = 4; /* VCC */
break;
case 3:
sysred = 8; /* temperature */
break;
case 4:
sysred = 16; /* gain */
break;
case 5:
sysred = 32; /* ref */
break;
}
devpriv->dux_commands[1] = 0x12; /* CONFIG0 */
devpriv->dux_commands[2] = 0x80; /* CONFIG1: 2kHz sampling rate */
devpriv->dux_commands[3] = 0x00; /* CONFIG3: diff. channels off */
devpriv->dux_commands[4] = 0;
devpriv->dux_commands[5] = 0;
devpriv->dux_commands[6] = sysred;
ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_SINGLE_AD_CMD);
if (ret < 0)
return ret;
ret = usbduxsigma_receive_cmd(dev, USBDUXSIGMA_SINGLE_AD_CMD);
if (ret < 0)
return ret;
/* 32 bits big endian from the A/D converter */
val = be32_to_cpu(get_unaligned((__be32 *)(devpriv->insn_buf + 1)));
val &= 0x00ffffff; /* strip status byte */
return (int)comedi_offset_munge(s, val);
}
static int usbduxsigma_firmware_upload(struct comedi_device *dev,
const u8 *data, size_t size,
unsigned long context)
{
struct usb_device *usb = comedi_to_usb_dev(dev);
u8 *buf;
u8 *tmp;
int ret;
if (!data)
return 0;
if (size > FIRMWARE_MAX_LEN) {
dev_err(dev->class_dev, "firmware binary too large for FX2\n");
return -ENOMEM;
}
/* we generate a local buffer for the firmware */
buf = kmemdup(data, size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
/* we need a malloc'ed buffer for usb_control_msg() */
tmp = kmalloc(1, GFP_KERNEL);
if (!tmp) {
kfree(buf);
return -ENOMEM;
}
/* stop the current firmware on the device */
*tmp = 1; /* 7f92 to one */
ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
USBDUXSUB_FIRMWARE,
VENDOR_DIR_OUT,
USBDUXSUB_CPUCS, 0x0000,
tmp, 1,
BULK_TIMEOUT);
if (ret < 0) {
dev_err(dev->class_dev, "can not stop firmware\n");
goto done;
}
/* upload the new firmware to the device */
ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
USBDUXSUB_FIRMWARE,
VENDOR_DIR_OUT,
0, 0x0000,
buf, size,
BULK_TIMEOUT);
if (ret < 0) {
dev_err(dev->class_dev, "firmware upload failed\n");
goto done;
}
/* start the new firmware on the device */
*tmp = 0; /* 7f92 to zero */
ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
USBDUXSUB_FIRMWARE,
VENDOR_DIR_OUT,
USBDUXSUB_CPUCS, 0x0000,
tmp, 1,
BULK_TIMEOUT);
if (ret < 0)
dev_err(dev->class_dev, "can not start firmware\n");
done:
kfree(tmp);
kfree(buf);
return ret;
}
static int usbduxsigma_alloc_usb_buffers(struct comedi_device *dev)
{
struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbduxsigma_private *devpriv = dev->private;
struct urb *urb;
int i;
devpriv->dux_commands = kzalloc(SIZEOFDUXBUFFER, GFP_KERNEL);
devpriv->in_buf = kzalloc(SIZEINBUF, GFP_KERNEL);
devpriv->insn_buf = kzalloc(SIZEINSNBUF, GFP_KERNEL);
devpriv->ai_urbs = kcalloc(devpriv->n_ai_urbs, sizeof(urb), GFP_KERNEL);
devpriv->ao_urbs = kcalloc(devpriv->n_ao_urbs, sizeof(urb), GFP_KERNEL);
if (!devpriv->dux_commands || !devpriv->in_buf || !devpriv->insn_buf ||
!devpriv->ai_urbs || !devpriv->ao_urbs)
return -ENOMEM;
for (i = 0; i < devpriv->n_ai_urbs; i++) {
/* one frame: 1ms */
urb = usb_alloc_urb(1, GFP_KERNEL);
if (!urb)
return -ENOMEM;
devpriv->ai_urbs[i] = urb;
urb->dev = usb;
/* will be filled later with a pointer to the comedi-device */
/* and ONLY then the urb should be submitted */
urb->context = NULL;
urb->pipe = usb_rcvisocpipe(usb, 6);
urb->transfer_flags = URB_ISO_ASAP;
urb->transfer_buffer = kzalloc(SIZEINBUF, GFP_KERNEL);
if (!urb->transfer_buffer)
return -ENOMEM;
urb->complete = usbduxsigma_ai_urb_complete;
urb->number_of_packets = 1;
urb->transfer_buffer_length = SIZEINBUF;
urb->iso_frame_desc[0].offset = 0;
urb->iso_frame_desc[0].length = SIZEINBUF;
}
for (i = 0; i < devpriv->n_ao_urbs; i++) {
/* one frame: 1ms */
urb = usb_alloc_urb(1, GFP_KERNEL);
if (!urb)
return -ENOMEM;
devpriv->ao_urbs[i] = urb;
urb->dev = usb;
/* will be filled later with a pointer to the comedi-device */
/* and ONLY then the urb should be submitted */
urb->context = NULL;
urb->pipe = usb_sndisocpipe(usb, 2);
urb->transfer_flags = URB_ISO_ASAP;
urb->transfer_buffer = kzalloc(SIZEOUTBUF, GFP_KERNEL);
if (!urb->transfer_buffer)
return -ENOMEM;
urb->complete = usbduxsigma_ao_urb_complete;
urb->number_of_packets = 1;
urb->transfer_buffer_length = SIZEOUTBUF;
urb->iso_frame_desc[0].offset = 0;
urb->iso_frame_desc[0].length = SIZEOUTBUF;
urb->interval = 1; /* (u)frames */
}
if (devpriv->pwm_buf_sz) {
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return -ENOMEM;
devpriv->pwm_urb = urb;
urb->transfer_buffer = kzalloc(devpriv->pwm_buf_sz,
GFP_KERNEL);
if (!urb->transfer_buffer)
return -ENOMEM;
}
return 0;
}
static void usbduxsigma_free_usb_buffers(struct comedi_device *dev)
{
struct usbduxsigma_private *devpriv = dev->private;
struct urb *urb;
int i;
urb = devpriv->pwm_urb;
if (urb) {
kfree(urb->transfer_buffer);
usb_free_urb(urb);
}
if (devpriv->ao_urbs) {
for (i = 0; i < devpriv->n_ao_urbs; i++) {
urb = devpriv->ao_urbs[i];
if (urb) {
kfree(urb->transfer_buffer);
usb_free_urb(urb);
}
}
kfree(devpriv->ao_urbs);
}
if (devpriv->ai_urbs) {
for (i = 0; i < devpriv->n_ai_urbs; i++) {
urb = devpriv->ai_urbs[i];
if (urb) {
kfree(urb->transfer_buffer);
usb_free_urb(urb);
}
}
kfree(devpriv->ai_urbs);
}
kfree(devpriv->insn_buf);
kfree(devpriv->in_buf);
kfree(devpriv->dux_commands);
}
static int usbduxsigma_auto_attach(struct comedi_device *dev,
unsigned long context_unused)
{
struct usb_interface *intf = comedi_to_usb_interface(dev);
struct usb_device *usb = comedi_to_usb_dev(dev);
struct usbduxsigma_private *devpriv;
struct comedi_subdevice *s;
int offset;
int ret;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
mutex_init(&devpriv->mut);
usb_set_intfdata(intf, devpriv);
devpriv->high_speed = (usb->speed == USB_SPEED_HIGH);
if (devpriv->high_speed) {
devpriv->n_ai_urbs = NUMOFINBUFFERSHIGH;
devpriv->n_ao_urbs = NUMOFOUTBUFFERSHIGH;
devpriv->pwm_buf_sz = 512;
} else {
devpriv->n_ai_urbs = NUMOFINBUFFERSFULL;
devpriv->n_ao_urbs = NUMOFOUTBUFFERSFULL;
}
ret = usbduxsigma_alloc_usb_buffers(dev);
if (ret)
return ret;
/* setting to alternate setting 3: enabling iso ep and bulk ep. */
ret = usb_set_interface(usb, intf->altsetting->desc.bInterfaceNumber,
3);
if (ret < 0) {
dev_err(dev->class_dev,
"could not set alternate setting 3 in high speed\n");
return ret;
}
ret = comedi_load_firmware(dev, &usb->dev, FIRMWARE,
usbduxsigma_firmware_upload, 0);
if (ret)
return ret;
ret = comedi_alloc_subdevices(dev, (devpriv->high_speed) ? 4 : 3);
if (ret)
return ret;
/* Analog Input subdevice */
s = &dev->subdevices[0];
dev->read_subdev = s;
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_CMD_READ | SDF_LSAMPL;
s->n_chan = NUMCHANNELS;
s->len_chanlist = NUMCHANNELS;
s->maxdata = 0x00ffffff;
s->range_table = &usbduxsigma_ai_range;
s->insn_read = usbduxsigma_ai_insn_read;
s->do_cmdtest = usbduxsigma_ai_cmdtest;
s->do_cmd = usbduxsigma_ai_cmd;
s->cancel = usbduxsigma_ai_cancel;
/* Analog Output subdevice */
s = &dev->subdevices[1];
dev->write_subdev = s;
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE;
s->n_chan = 4;
s->len_chanlist = s->n_chan;
s->maxdata = 0x00ff;
s->range_table = &range_unipolar2_5;
s->insn_write = usbduxsigma_ao_insn_write;
s->insn_read = usbduxsigma_ao_insn_read;
s->do_cmdtest = usbduxsigma_ao_cmdtest;
s->do_cmd = usbduxsigma_ao_cmd;
s->cancel = usbduxsigma_ao_cancel;
ret = comedi_alloc_subdev_readback(s);
if (ret)
return ret;
/* Digital I/O subdevice */
s = &dev->subdevices[2];
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 24;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = usbduxsigma_dio_insn_bits;
s->insn_config = usbduxsigma_dio_insn_config;
if (devpriv->high_speed) {
/* Timer / pwm subdevice */
s = &dev->subdevices[3];
s->type = COMEDI_SUBD_PWM;
s->subdev_flags = SDF_WRITABLE | SDF_PWM_HBRIDGE;
s->n_chan = 8;
s->maxdata = devpriv->pwm_buf_sz;
s->insn_write = usbduxsigma_pwm_write;
s->insn_config = usbduxsigma_pwm_config;
usbduxsigma_pwm_period(dev, s, PWM_DEFAULT_PERIOD);
}
offset = usbduxsigma_getstatusinfo(dev, 0);
if (offset < 0) {
dev_err(dev->class_dev,
"Communication to USBDUXSIGMA failed! Check firmware and cabling.\n");
return offset;
}
dev_info(dev->class_dev, "ADC_zero = %x\n", offset);
return 0;
}
static void usbduxsigma_detach(struct comedi_device *dev)
{
struct usb_interface *intf = comedi_to_usb_interface(dev);
struct usbduxsigma_private *devpriv = dev->private;
usb_set_intfdata(intf, NULL);
if (!devpriv)
return;
mutex_lock(&devpriv->mut);
/* force unlink all urbs */
usbduxsigma_ai_stop(dev, 1);
usbduxsigma_ao_stop(dev, 1);
usbduxsigma_pwm_stop(dev, 1);
usbduxsigma_free_usb_buffers(dev);
mutex_unlock(&devpriv->mut);
mutex_destroy(&devpriv->mut);
}
static struct comedi_driver usbduxsigma_driver = {
.driver_name = "usbduxsigma",
.module = THIS_MODULE,
.auto_attach = usbduxsigma_auto_attach,
.detach = usbduxsigma_detach,
};
static int usbduxsigma_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
return comedi_usb_auto_config(intf, &usbduxsigma_driver, 0);
}
static const struct usb_device_id usbduxsigma_usb_table[] = {
{ USB_DEVICE(0x13d8, 0x0020) },
{ USB_DEVICE(0x13d8, 0x0021) },
{ USB_DEVICE(0x13d8, 0x0022) },
{ }
};
MODULE_DEVICE_TABLE(usb, usbduxsigma_usb_table);
static struct usb_driver usbduxsigma_usb_driver = {
.name = "usbduxsigma",
.probe = usbduxsigma_usb_probe,
.disconnect = comedi_usb_auto_unconfig,
.id_table = usbduxsigma_usb_table,
};
module_comedi_usb_driver(usbduxsigma_driver, usbduxsigma_usb_driver);
MODULE_AUTHOR("Bernd Porr, [email protected]");
MODULE_DESCRIPTION("Stirling/ITL USB-DUX SIGMA -- [email protected]");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(FIRMWARE);
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