diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/dt2815.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/dt2815.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/drivers/staging/comedi/drivers/dt2815.c b/drivers/staging/comedi/drivers/dt2815.c deleted file mode 100644 index 5906f32aa01f..000000000000 --- a/drivers/staging/comedi/drivers/dt2815.c +++ /dev/null @@ -1,217 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * comedi/drivers/dt2815.c - * Hardware driver for Data Translation DT2815 - * - * COMEDI - Linux Control and Measurement Device Interface - * Copyright (C) 1999 Anders Blomdell <anders.blomdell@control.lth.se> - */ -/* - * Driver: dt2815 - * Description: Data Translation DT2815 - * Author: ds - * Status: mostly complete, untested - * Devices: [Data Translation] DT2815 (dt2815) - * - * I'm not sure anyone has ever tested this board. If you have information - * contrary, please update. - * - * Configuration options: - * [0] - I/O port base base address - * [1] - IRQ (unused) - * [2] - Voltage unipolar/bipolar configuration - * 0 == unipolar 5V (0V -- +5V) - * 1 == bipolar 5V (-5V -- +5V) - * [3] - Current offset configuration - * 0 == disabled (0mA -- +32mAV) - * 1 == enabled (+4mA -- +20mAV) - * [4] - Firmware program configuration - * 0 == program 1 (see manual table 5-4) - * 1 == program 2 (see manual table 5-4) - * 2 == program 3 (see manual table 5-4) - * 3 == program 4 (see manual table 5-4) - * [5] - Analog output 0 range configuration - * 0 == voltage - * 1 == current - * [6] - Analog output 1 range configuration (same options) - * [7] - Analog output 2 range configuration (same options) - * [8] - Analog output 3 range configuration (same options) - * [9] - Analog output 4 range configuration (same options) - * [10] - Analog output 5 range configuration (same options) - * [11] - Analog output 6 range configuration (same options) - * [12] - Analog output 7 range configuration (same options) - */ - -#include <linux/module.h> -#include "../comedidev.h" - -#include <linux/delay.h> - -#define DT2815_DATA 0 -#define DT2815_STATUS 1 - -struct dt2815_private { - const struct comedi_lrange *range_type_list[8]; - unsigned int ao_readback[8]; -}; - -static int dt2815_ao_status(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned long context) -{ - unsigned int status; - - status = inb(dev->iobase + DT2815_STATUS); - if (status == context) - return 0; - return -EBUSY; -} - -static int dt2815_ao_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) -{ - struct dt2815_private *devpriv = dev->private; - int i; - int chan = CR_CHAN(insn->chanspec); - - for (i = 0; i < insn->n; i++) - data[i] = devpriv->ao_readback[chan]; - - return i; -} - -static int dt2815_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) -{ - struct dt2815_private *devpriv = dev->private; - int i; - int chan = CR_CHAN(insn->chanspec); - unsigned int lo, hi; - int ret; - - for (i = 0; i < insn->n; i++) { - /* FIXME: lo bit 0 chooses voltage output or current output */ - lo = ((data[i] & 0x0f) << 4) | (chan << 1) | 0x01; - hi = (data[i] & 0xff0) >> 4; - - ret = comedi_timeout(dev, s, insn, dt2815_ao_status, 0x00); - if (ret) - return ret; - - outb(lo, dev->iobase + DT2815_DATA); - - ret = comedi_timeout(dev, s, insn, dt2815_ao_status, 0x10); - if (ret) - return ret; - - outb(hi, dev->iobase + DT2815_DATA); - - devpriv->ao_readback[chan] = data[i]; - } - return i; -} - -/* - * options[0] Board base address - * options[1] IRQ (not applicable) - * options[2] Voltage unipolar/bipolar configuration - * 0 == unipolar 5V (0V -- +5V) - * 1 == bipolar 5V (-5V -- +5V) - * options[3] Current offset configuration - * 0 == disabled (0mA -- +32mAV) - * 1 == enabled (+4mA -- +20mAV) - * options[4] Firmware program configuration - * 0 == program 1 (see manual table 5-4) - * 1 == program 2 (see manual table 5-4) - * 2 == program 3 (see manual table 5-4) - * 3 == program 4 (see manual table 5-4) - * options[5] Analog output 0 range configuration - * 0 == voltage - * 1 == current - * options[6] Analog output 1 range configuration - * ... - * options[12] Analog output 7 range configuration - * 0 == voltage - * 1 == current - */ - -static int dt2815_attach(struct comedi_device *dev, struct comedi_devconfig *it) -{ - struct dt2815_private *devpriv; - struct comedi_subdevice *s; - int i; - const struct comedi_lrange *current_range_type, *voltage_range_type; - int ret; - - ret = comedi_request_region(dev, it->options[0], 0x2); - if (ret) - return ret; - - ret = comedi_alloc_subdevices(dev, 1); - if (ret) - return ret; - - devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); - if (!devpriv) - return -ENOMEM; - - s = &dev->subdevices[0]; - /* ao subdevice */ - s->type = COMEDI_SUBD_AO; - s->subdev_flags = SDF_WRITABLE; - s->maxdata = 0xfff; - s->n_chan = 8; - s->insn_write = dt2815_ao_insn; - s->insn_read = dt2815_ao_insn_read; - s->range_table_list = devpriv->range_type_list; - - current_range_type = (it->options[3]) - ? &range_4_20mA : &range_0_32mA; - voltage_range_type = (it->options[2]) - ? &range_bipolar5 : &range_unipolar5; - for (i = 0; i < 8; i++) { - devpriv->range_type_list[i] = (it->options[5 + i]) - ? current_range_type : voltage_range_type; - } - - /* Init the 2815 */ - outb(0x00, dev->iobase + DT2815_STATUS); - for (i = 0; i < 100; i++) { - /* This is incredibly slow (approx 20 ms) */ - unsigned int status; - - usleep_range(1000, 3000); - status = inb(dev->iobase + DT2815_STATUS); - if (status == 4) { - unsigned int program; - - program = (it->options[4] & 0x3) << 3 | 0x7; - outb(program, dev->iobase + DT2815_DATA); - dev_dbg(dev->class_dev, "program: 0x%x (@t=%d)\n", - program, i); - break; - } else if (status != 0x00) { - dev_dbg(dev->class_dev, - "unexpected status 0x%x (@t=%d)\n", - status, i); - if (status & 0x60) - outb(0x00, dev->iobase + DT2815_STATUS); - } - } - - return 0; -} - -static struct comedi_driver dt2815_driver = { - .driver_name = "dt2815", - .module = THIS_MODULE, - .attach = dt2815_attach, - .detach = comedi_legacy_detach, -}; -module_comedi_driver(dt2815_driver); - -MODULE_AUTHOR("Comedi https://www.comedi.org"); -MODULE_DESCRIPTION("Comedi low-level driver"); -MODULE_LICENSE("GPL"); |