diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/dt2801.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/dt2801.c | 283 |
1 files changed, 125 insertions, 158 deletions
diff --git a/drivers/staging/comedi/drivers/dt2801.c b/drivers/staging/comedi/drivers/dt2801.c index b85c8366a396..625bd617a8e9 100644 --- a/drivers/staging/comedi/drivers/dt2801.c +++ b/drivers/staging/comedi/drivers/dt2801.c @@ -88,29 +88,6 @@ Configuration options: #define DT2801_STATUS 1 #define DT2801_CMD 1 -static int dt2801_attach(struct comedi_device *dev, - struct comedi_devconfig *it); -static int dt2801_detach(struct comedi_device *dev); -static struct comedi_driver driver_dt2801 = { - .driver_name = "dt2801", - .module = THIS_MODULE, - .attach = dt2801_attach, - .detach = dt2801_detach, -}; - -static int __init driver_dt2801_init_module(void) -{ - return comedi_driver_register(&driver_dt2801); -} - -static void __exit driver_dt2801_cleanup_module(void) -{ - comedi_driver_unregister(&driver_dt2801); -} - -module_init(driver_dt2801_init_module); -module_exit(driver_dt2801_cleanup_module); - #if 0 /* ignore 'defined but not used' warning */ static const struct comedi_lrange range_dt2801_ai_pgh_bipolar = { 4, { @@ -258,22 +235,6 @@ struct dt2801_private { #define devpriv ((struct dt2801_private *)dev->private) -static int dt2801_ai_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data); -static int dt2801_ao_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data); -static int dt2801_ao_insn_write(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data); -static int dt2801_dio_insn_bits(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data); -static int dt2801_dio_insn_config(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data); - /* These are the low-level routines: writecommand: write a command to the board writedata: write data byte @@ -503,6 +464,123 @@ static const struct comedi_lrange *ai_range_lkup(int type, int opt) return &range_unknown; } +static int dt2801_error(struct comedi_device *dev, int stat) +{ + if (stat < 0) { + if (stat == -ETIME) + printk("dt2801: timeout\n"); + else + printk("dt2801: error %d\n", stat); + return stat; + } + printk("dt2801: error status 0x%02x, resetting...\n", stat); + + dt2801_reset(dev); + dt2801_reset(dev); + + return -EIO; +} + +static int dt2801_ai_insn_read(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, unsigned int *data) +{ + int d; + int stat; + int i; + + for (i = 0; i < insn->n; i++) { + stat = dt2801_writecmd(dev, DT_C_READ_ADIM); + dt2801_writedata(dev, CR_RANGE(insn->chanspec)); + dt2801_writedata(dev, CR_CHAN(insn->chanspec)); + stat = dt2801_readdata2(dev, &d); + + if (stat != 0) + return dt2801_error(dev, stat); + + data[i] = d; + } + + return i; +} + +static int dt2801_ao_insn_read(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, unsigned int *data) +{ + data[0] = devpriv->ao_readback[CR_CHAN(insn->chanspec)]; + + return 1; +} + +static int dt2801_ao_insn_write(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, unsigned int *data) +{ + dt2801_writecmd(dev, DT_C_WRITE_DAIM); + dt2801_writedata(dev, CR_CHAN(insn->chanspec)); + dt2801_writedata2(dev, data[0]); + + devpriv->ao_readback[CR_CHAN(insn->chanspec)] = data[0]; + + return 1; +} + +static int dt2801_dio_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, unsigned int *data) +{ + int which = 0; + + if (s == dev->subdevices + 4) + which = 1; + + if (insn->n != 2) + return -EINVAL; + if (data[0]) { + s->state &= ~data[0]; + s->state |= (data[0] & data[1]); + dt2801_writecmd(dev, DT_C_WRITE_DIG); + dt2801_writedata(dev, which); + dt2801_writedata(dev, s->state); + } + dt2801_writecmd(dev, DT_C_READ_DIG); + dt2801_writedata(dev, which); + dt2801_readdata(dev, data + 1); + + return 2; +} + +static int dt2801_dio_insn_config(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, unsigned int *data) +{ + int which = 0; + + if (s == dev->subdevices + 4) + which = 1; + + /* configure */ + switch (data[0]) { + case INSN_CONFIG_DIO_OUTPUT: + s->io_bits = 0xff; + dt2801_writecmd(dev, DT_C_SET_DIGOUT); + break; + case INSN_CONFIG_DIO_INPUT: + s->io_bits = 0; + dt2801_writecmd(dev, DT_C_SET_DIGIN); + break; + case INSN_CONFIG_DIO_QUERY: + data[1] = s->io_bits ? COMEDI_OUTPUT : COMEDI_INPUT; + return insn->n; + default: + return -EINVAL; + } + dt2801_writedata(dev, which); + + return 1; +} + /* options: [0] - i/o base @@ -615,130 +693,19 @@ out: return ret; } -static int dt2801_detach(struct comedi_device *dev) +static void dt2801_detach(struct comedi_device *dev) { if (dev->iobase) release_region(dev->iobase, DT2801_IOSIZE); - - return 0; -} - -static int dt2801_error(struct comedi_device *dev, int stat) -{ - if (stat < 0) { - if (stat == -ETIME) - printk("dt2801: timeout\n"); - else - printk("dt2801: error %d\n", stat); - return stat; - } - printk("dt2801: error status 0x%02x, resetting...\n", stat); - - dt2801_reset(dev); - dt2801_reset(dev); - - return -EIO; -} - -static int dt2801_ai_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) -{ - int d; - int stat; - int i; - - for (i = 0; i < insn->n; i++) { - stat = dt2801_writecmd(dev, DT_C_READ_ADIM); - dt2801_writedata(dev, CR_RANGE(insn->chanspec)); - dt2801_writedata(dev, CR_CHAN(insn->chanspec)); - stat = dt2801_readdata2(dev, &d); - - if (stat != 0) - return dt2801_error(dev, stat); - - data[i] = d; - } - - return i; -} - -static int dt2801_ao_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) -{ - data[0] = devpriv->ao_readback[CR_CHAN(insn->chanspec)]; - - return 1; -} - -static int dt2801_ao_insn_write(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) -{ - dt2801_writecmd(dev, DT_C_WRITE_DAIM); - dt2801_writedata(dev, CR_CHAN(insn->chanspec)); - dt2801_writedata2(dev, data[0]); - - devpriv->ao_readback[CR_CHAN(insn->chanspec)] = data[0]; - - return 1; -} - -static int dt2801_dio_insn_bits(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) -{ - int which = 0; - - if (s == dev->subdevices + 4) - which = 1; - - if (insn->n != 2) - return -EINVAL; - if (data[0]) { - s->state &= ~data[0]; - s->state |= (data[0] & data[1]); - dt2801_writecmd(dev, DT_C_WRITE_DIG); - dt2801_writedata(dev, which); - dt2801_writedata(dev, s->state); - } - dt2801_writecmd(dev, DT_C_READ_DIG); - dt2801_writedata(dev, which); - dt2801_readdata(dev, data + 1); - - return 2; } -static int dt2801_dio_insn_config(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) -{ - int which = 0; - - if (s == dev->subdevices + 4) - which = 1; - - /* configure */ - switch (data[0]) { - case INSN_CONFIG_DIO_OUTPUT: - s->io_bits = 0xff; - dt2801_writecmd(dev, DT_C_SET_DIGOUT); - break; - case INSN_CONFIG_DIO_INPUT: - s->io_bits = 0; - dt2801_writecmd(dev, DT_C_SET_DIGIN); - break; - case INSN_CONFIG_DIO_QUERY: - data[1] = s->io_bits ? COMEDI_OUTPUT : COMEDI_INPUT; - return insn->n; - default: - return -EINVAL; - } - dt2801_writedata(dev, which); - - return 1; -} +static struct comedi_driver dt2801_driver = { + .driver_name = "dt2801", + .module = THIS_MODULE, + .attach = dt2801_attach, + .detach = dt2801_detach, +}; +module_comedi_driver(dt2801_driver); MODULE_AUTHOR("Comedi http://www.comedi.org"); MODULE_DESCRIPTION("Comedi low-level driver"); |