diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/usbdux.c')
-rw-r--r-- | drivers/staging/comedi/drivers/usbdux.c | 164 |
1 files changed, 75 insertions, 89 deletions
diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c index ced05e581620..f4f05d29d30d 100644 --- a/drivers/staging/comedi/drivers/usbdux.c +++ b/drivers/staging/comedi/drivers/usbdux.c @@ -108,55 +108,55 @@ #define BULK_TIMEOUT 1000 /* 300Hz max frequ under PWM */ -#define MIN_PWM_PERIOD ((long)(1E9/300)) +#define MIN_PWM_PERIOD ((long)(1E9 / 300)) /* Default PWM frequency */ -#define PWM_DEFAULT_PERIOD ((long)(1E9/100)) +#define PWM_DEFAULT_PERIOD ((long)(1E9 / 100)) /* Size of one A/D value */ -#define SIZEADIN ((sizeof(uint16_t))) +#define SIZEADIN ((sizeof(u16))) /* * Size of the input-buffer IN BYTES * Always multiple of 8 for 8 microframes which is needed in the highspeed mode */ -#define SIZEINBUF ((8*SIZEADIN)) +#define SIZEINBUF (8 * SIZEADIN) /* 16 bytes. */ -#define SIZEINSNBUF 16 +#define SIZEINSNBUF 16 /* size of one value for the D/A converter: channel and value */ -#define SIZEDAOUT ((sizeof(uint8_t)+sizeof(uint16_t))) +#define SIZEDAOUT ((sizeof(u8) + sizeof(u16))) /* * 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)) +#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)) +#define SIZEOFDUXBUFFER (8 * SIZEDAOUT + 2) /* Number of in-URBs which receive the data: min=2 */ -#define NUMOFINBUFFERSFULL 5 +#define NUMOFINBUFFERSFULL 5 /* Number of out-URBs which send the data: min=2 */ -#define NUMOFOUTBUFFERSFULL 5 +#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 +#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 +#define NUMOFOUTBUFFERSHIGH 10 /* number of retries to get the right dux command */ -#define RETRIES 10 +#define RETRIES 10 static const struct comedi_lrange range_usbdux_ai_range = { 4, { @@ -187,7 +187,7 @@ struct usbdux_private { /* PWM period */ unsigned int pwm_period; /* PWM internal delay for the GPIF in the FX2 */ - uint8_t pwm_delay; + u8 pwm_delay; /* size of the PWM buffer which holds the bit pattern */ int pwm_buf_sz; /* input buffer for the ISO-transfer */ @@ -209,8 +209,8 @@ struct usbdux_private { /* interval in frames/uframes */ unsigned int ai_interval; /* commands */ - uint8_t *dux_commands; - struct semaphore sem; + u8 *dux_commands; + struct mutex mut; }; static void usbdux_unlink_urbs(struct urb **urbs, int num_urbs) @@ -237,10 +237,10 @@ static int usbdux_ai_cancel(struct comedi_device *dev, struct usbdux_private *devpriv = dev->private; /* prevent other CPUs from submitting new commands just now */ - down(&devpriv->sem); + mutex_lock(&devpriv->mut); /* unlink only if the urb really has been submitted */ usbdux_ai_stop(dev, devpriv->ai_cmd_running); - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return 0; } @@ -262,11 +262,11 @@ static void usbduxsub_ai_handle_urb(struct comedi_device *dev, /* get the data from the USB bus and hand it over to comedi */ for (i = 0; i < cmd->chanlist_len; i++) { unsigned int range = CR_RANGE(cmd->chanlist[i]); - uint16_t val = le16_to_cpu(devpriv->in_buf[i]); + u16 val = le16_to_cpu(devpriv->in_buf[i]); /* bipolar data is two's-complement */ if (comedi_range_is_bipolar(s, range)) - val ^= ((s->maxdata + 1) >> 1); + val = comedi_offset_munge(s, val); /* transfer data */ if (!comedi_buf_write_samples(s, &val, 1)) @@ -365,10 +365,10 @@ static int usbdux_ao_cancel(struct comedi_device *dev, struct usbdux_private *devpriv = dev->private; /* prevent other CPUs from submitting a command just now */ - down(&devpriv->sem); + mutex_lock(&devpriv->mut); /* unlink only if it is really running */ usbdux_ao_stop(dev, devpriv->ao_cmd_running); - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return 0; } @@ -380,7 +380,7 @@ static void usbduxsub_ao_handle_urb(struct comedi_device *dev, struct usbdux_private *devpriv = dev->private; struct comedi_async *async = s->async; struct comedi_cmd *cmd = &async->cmd; - uint8_t *datap; + u8 *datap; int ret; int i; @@ -516,9 +516,8 @@ static int usbdux_submit_urbs(struct comedi_device *dev, static int usbdux_ai_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { - struct usbdux_private *this_usbduxsub = dev->private; - int err = 0, i; - unsigned int tmp_timer; + struct usbdux_private *devpriv = dev->private; + int err = 0; /* Step 1 : check if triggers are trivially valid */ @@ -549,40 +548,31 @@ static int usbdux_ai_cmdtest(struct comedi_device *dev, err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0); if (cmd->scan_begin_src == TRIG_TIMER) { - if (this_usbduxsub->high_speed) { + /* full speed does 1kHz scans every USB frame */ + unsigned int arg = 1000000; + unsigned int min_arg = arg; + + if (devpriv->high_speed) { /* * In high speed mode microframes are possible. * However, during one microframe we can roughly * sample one channel. Thus, the more channels * are in the channel list the more time we need. */ - i = 1; + int i = 1; + /* find a power of 2 for the number of channels */ - while (i < (cmd->chanlist_len)) + while (i < cmd->chanlist_len) i = i * 2; - err |= comedi_check_trigger_arg_min(&cmd-> - scan_begin_arg, - 1000000 / 8 * i); - /* now calc the real sampling rate with all the - * rounding errors */ - tmp_timer = - ((unsigned int)(cmd->scan_begin_arg / 125000)) * - 125000; - } else { - /* full speed */ - /* 1kHz scans every USB frame */ - err |= comedi_check_trigger_arg_min(&cmd-> - scan_begin_arg, - 1000000); - /* - * calc the real sampling rate with the rounding errors - */ - tmp_timer = ((unsigned int)(cmd->scan_begin_arg / - 1000000)) * 1000000; + arg /= 8; + min_arg = arg * i; } - err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, - tmp_timer); + err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg, + min_arg); + /* calc the real sampling rate with the rounding errors */ + arg = (cmd->scan_begin_arg / arg) * arg; + err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, arg); } err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg, @@ -603,10 +593,10 @@ static int usbdux_ai_cmdtest(struct comedi_device *dev, * creates the ADC command for the MAX1271 * range is the range value from comedi */ -static uint8_t create_adc_command(unsigned int chan, unsigned int range) +static u8 create_adc_command(unsigned int chan, unsigned int range) { - uint8_t p = (range <= 1); - uint8_t r = ((range % 2) == 0); + u8 p = (range <= 1); + u8 r = ((range % 2) == 0); return (chan << 4) | ((p == 1) << 2) | ((r == 1) << 3); } @@ -656,7 +646,7 @@ static int usbdux_ai_inttrig(struct comedi_device *dev, if (trig_num != cmd->start_arg) return -EINVAL; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); if (!devpriv->ai_cmd_running) { devpriv->ai_cmd_running = 1; @@ -672,7 +662,7 @@ static int usbdux_ai_inttrig(struct comedi_device *dev, } ai_trig_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret; } @@ -685,7 +675,7 @@ static int usbdux_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) int i; /* block other CPUs from starting an ai_cmd */ - down(&devpriv->sem); + mutex_lock(&devpriv->mut); if (devpriv->ai_cmd_running) goto ai_cmd_exit; @@ -746,7 +736,7 @@ static int usbdux_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) } ai_cmd_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret; } @@ -764,7 +754,7 @@ static int usbdux_ai_insn_read(struct comedi_device *dev, int ret = -EBUSY; int i; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); if (devpriv->ai_cmd_running) goto ai_read_exit; @@ -786,13 +776,13 @@ static int usbdux_ai_insn_read(struct comedi_device *dev, /* bipolar data is two's-complement */ if (comedi_range_is_bipolar(s, range)) - val ^= ((s->maxdata + 1) >> 1); + val = comedi_offset_munge(s, val); data[i] = val; } ai_read_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret ? ret : insn->n; } @@ -805,9 +795,9 @@ static int usbdux_ao_insn_read(struct comedi_device *dev, struct usbdux_private *devpriv = dev->private; int ret; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); ret = comedi_readback_insn_read(dev, s, insn, data); - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret; } @@ -824,7 +814,7 @@ static int usbdux_ao_insn_write(struct comedi_device *dev, int ret = -EBUSY; int i; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); if (devpriv->ao_cmd_running) goto ao_write_exit; @@ -848,7 +838,7 @@ static int usbdux_ao_insn_write(struct comedi_device *dev, } ao_write_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret ? ret : insn->n; } @@ -864,7 +854,7 @@ static int usbdux_ao_inttrig(struct comedi_device *dev, if (trig_num != cmd->start_arg) return -EINVAL; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); if (!devpriv->ao_cmd_running) { devpriv->ao_cmd_running = 1; @@ -880,25 +870,21 @@ static int usbdux_ao_inttrig(struct comedi_device *dev, } ao_trig_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret; } static int usbdux_ao_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_cmd *cmd) { - struct usbdux_private *this_usbduxsub = dev->private; int err = 0; unsigned int flags; - if (!this_usbduxsub) - return -EFAULT; - /* Step 1 : check if triggers are trivially valid */ err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT); - if (0) { /* (this_usbduxsub->high_speed) */ + if (0) { /* (devpriv->high_speed) */ /* the sampling rate is set by the coversion rate */ flags = TRIG_FOLLOW; } else { @@ -907,7 +893,7 @@ static int usbdux_ao_cmdtest(struct comedi_device *dev, } err |= comedi_check_trigger_src(&cmd->scan_begin_src, flags); - if (0) { /* (this_usbduxsub->high_speed) */ + if (0) { /* (devpriv->high_speed) */ /* * in usb-2.0 only one conversion it transmitted * but with 8kHz/n @@ -974,7 +960,7 @@ static int usbdux_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s) struct comedi_cmd *cmd = &s->async->cmd; int ret = -EBUSY; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); if (devpriv->ao_cmd_running) goto ao_cmd_exit; @@ -1016,7 +1002,7 @@ static int usbdux_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s) } ao_cmd_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret; } @@ -1047,7 +1033,7 @@ static int usbdux_dio_insn_bits(struct comedi_device *dev, struct usbdux_private *devpriv = dev->private; int ret; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); comedi_dio_update_state(s, data); @@ -1069,7 +1055,7 @@ static int usbdux_dio_insn_bits(struct comedi_device *dev, data[1] = le16_to_cpu(devpriv->insn_buf[1]); dio_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret ? ret : insn->n; } @@ -1084,7 +1070,7 @@ static int usbdux_counter_read(struct comedi_device *dev, int ret = 0; int i; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); for (i = 0; i < insn->n; i++) { ret = send_dux_commands(dev, USBDUX_CMD_TIMER_RD); @@ -1098,7 +1084,7 @@ static int usbdux_counter_read(struct comedi_device *dev, } counter_read_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret ? ret : insn->n; } @@ -1114,7 +1100,7 @@ static int usbdux_counter_write(struct comedi_device *dev, int ret = 0; int i; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); devpriv->dux_commands[1] = chan; @@ -1126,7 +1112,7 @@ static int usbdux_counter_write(struct comedi_device *dev, break; } - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret ? ret : insn->n; } @@ -1162,11 +1148,11 @@ static int usbdux_pwm_cancel(struct comedi_device *dev, struct usbdux_private *devpriv = dev->private; int ret; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); /* unlink only if it is really running */ usbdux_pwm_stop(dev, devpriv->pwm_cmd_running); ret = send_dux_commands(dev, USBDUX_CMD_PWM_OFF); - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret; } @@ -1271,7 +1257,7 @@ static int usbdux_pwm_start(struct comedi_device *dev, struct usbdux_private *devpriv = dev->private; int ret = 0; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); if (devpriv->pwm_cmd_running) goto pwm_start_exit; @@ -1290,7 +1276,7 @@ static int usbdux_pwm_start(struct comedi_device *dev, devpriv->pwm_cmd_running = 0; pwm_start_exit: - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); return ret; } @@ -1391,8 +1377,8 @@ static int usbdux_firmware_upload(struct comedi_device *dev, unsigned long context) { struct usb_device *usb = comedi_to_usb_dev(dev); - uint8_t *buf; - uint8_t *tmp; + u8 *buf; + u8 *tmp; int ret; if (!data) @@ -1590,7 +1576,7 @@ static int usbdux_auto_attach(struct comedi_device *dev, if (!devpriv) return -ENOMEM; - sema_init(&devpriv->sem, 1); + mutex_init(&devpriv->mut); usb_set_intfdata(intf, devpriv); @@ -1705,7 +1691,7 @@ static void usbdux_detach(struct comedi_device *dev) if (!devpriv) return; - down(&devpriv->sem); + mutex_lock(&devpriv->mut); /* force unlink all urbs */ usbdux_pwm_stop(dev, 1); @@ -1714,7 +1700,7 @@ static void usbdux_detach(struct comedi_device *dev) usbdux_free_usb_buffers(dev); - up(&devpriv->sem); + mutex_unlock(&devpriv->mut); } static struct comedi_driver usbdux_driver = { |