diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/usbduxsigma.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/usbduxsigma.c | 1616 |
1 files changed, 0 insertions, 1616 deletions
diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c b/drivers/staging/comedi/drivers/usbduxsigma.c deleted file mode 100644 index 54d7605e909f..000000000000 --- a/drivers/staging/comedi/drivers/usbduxsigma.c +++ /dev/null @@ -1,1616 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * usbduxsigma.c - * Copyright (C) 2011-2015 Bernd Porr, mail@berndporr.me.uk - */ - -/* - * Driver: usbduxsigma - * Description: University of Stirling USB DAQ & INCITE Technology Limited - * Devices: [ITL] USB-DUX-SIGMA (usbduxsigma) - * Author: Bernd Porr <mail@berndporr.me.uk> - * 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 <asm/unaligned.h> - -#include "../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, mail@berndporr.me.uk"); -MODULE_DESCRIPTION("Stirling/ITL USB-DUX SIGMA -- mail@berndporr.me.uk"); -MODULE_LICENSE("GPL"); -MODULE_FIRMWARE(FIRMWARE); |