diff options
Diffstat (limited to 'drivers/comedi/drivers/adv_pci1723.c')
| -rw-r--r-- | drivers/comedi/drivers/adv_pci1723.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/adv_pci1723.c b/drivers/comedi/drivers/adv_pci1723.c new file mode 100644 index 000000000000..23660a9fdb9c --- /dev/null +++ b/drivers/comedi/drivers/adv_pci1723.c @@ -0,0 +1,227 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * adv_pci1723.c + * Comedi driver for the Advantech PCI-1723 card. + * + * COMEDI - Linux Control and Measurement Device Interface + * Copyright (C) 2000 David A. Schleef <ds@schleef.org> + */ + +/* + * Driver: adv_pci1723 + * Description: Advantech PCI-1723 + * Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk> + * Devices: [Advantech] PCI-1723 (adv_pci1723) + * Updated: Mon, 14 Apr 2008 15:12:56 +0100 + * Status: works + * + * Configuration Options: not applicable, uses comedi PCI auto config + * + * Subdevice 0 is 8-channel AO, 16-bit, range +/- 10 V. + * + * Subdevice 1 is 16-channel DIO. The channels are configurable as + * input or output in 2 groups (0 to 7, 8 to 15). Configuring any + * channel implicitly configures all channels in the same group. + * + * TODO: + * 1. Add the two milliamp ranges to the AO subdevice (0 to 20 mA, + * 4 to 20 mA). + * 2. Read the initial ranges and values of the AO subdevice at + * start-up instead of reinitializing them. + * 3. Implement calibration. + */ + +#include <linux/module.h> + +#include "../comedi_pci.h" + +/* + * PCI Bar 2 I/O Register map (dev->iobase) + */ +#define PCI1723_AO_REG(x) (0x00 + ((x) * 2)) +#define PCI1723_BOARD_ID_REG 0x10 +#define PCI1723_BOARD_ID_MASK (0xf << 0) +#define PCI1723_SYNC_CTRL_REG 0x12 +#define PCI1723_SYNC_CTRL(x) (((x) & 0x1) << 0) +#define PCI1723_SYNC_CTRL_ASYNC PCI1723_SYNC_CTRL(0) +#define PCI1723_SYNC_CTRL_SYNC PCI1723_SYNC_CTRL(1) +#define PCI1723_CTRL_REG 0x14 +#define PCI1723_CTRL_BUSY BIT(15) +#define PCI1723_CTRL_INIT BIT(14) +#define PCI1723_CTRL_SELF BIT(8) +#define PCI1723_CTRL_IDX(x) (((x) & 0x3) << 6) +#define PCI1723_CTRL_RANGE(x) (((x) & 0x3) << 4) +#define PCI1723_CTRL_SEL(x) (((x) & 0x1) << 3) +#define PCI1723_CTRL_GAIN PCI1723_CTRL_SEL(0) +#define PCI1723_CTRL_OFFSET PCI1723_CTRL_SEL(1) +#define PCI1723_CTRL_CHAN(x) (((x) & 0x7) << 0) +#define PCI1723_CALIB_CTRL_REG 0x16 +#define PCI1723_CALIB_CTRL_CS BIT(2) +#define PCI1723_CALIB_CTRL_DAT BIT(1) +#define PCI1723_CALIB_CTRL_CLK BIT(0) +#define PCI1723_CALIB_STROBE_REG 0x18 +#define PCI1723_DIO_CTRL_REG 0x1a +#define PCI1723_DIO_CTRL_HDIO BIT(1) +#define PCI1723_DIO_CTRL_LDIO BIT(0) +#define PCI1723_DIO_DATA_REG 0x1c +#define PCI1723_CALIB_DATA_REG 0x1e +#define PCI1723_SYNC_STROBE_REG 0x20 +#define PCI1723_RESET_AO_STROBE_REG 0x22 +#define PCI1723_RESET_CALIB_STROBE_REG 0x24 +#define PCI1723_RANGE_STROBE_REG 0x26 +#define PCI1723_VREF_REG 0x28 +#define PCI1723_VREF(x) (((x) & 0x3) << 0) +#define PCI1723_VREF_NEG10V PCI1723_VREF(0) +#define PCI1723_VREF_0V PCI1723_VREF(1) +#define PCI1723_VREF_POS10V PCI1723_VREF(3) + +static int pci1723_ao_insn_write(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + unsigned int chan = CR_CHAN(insn->chanspec); + int i; + + for (i = 0; i < insn->n; i++) { + unsigned int val = data[i]; + + outw(val, dev->iobase + PCI1723_AO_REG(chan)); + s->readback[chan] = val; + } + + return insn->n; +} + +static int pci1723_dio_insn_config(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + unsigned int chan = CR_CHAN(insn->chanspec); + unsigned int mask = (chan < 8) ? 0x00ff : 0xff00; + unsigned short mode = 0x0000; /* assume output */ + int ret; + + ret = comedi_dio_insn_config(dev, s, insn, data, mask); + if (ret) + return ret; + + if (!(s->io_bits & 0x00ff)) + mode |= PCI1723_DIO_CTRL_LDIO; /* low byte input */ + if (!(s->io_bits & 0xff00)) + mode |= PCI1723_DIO_CTRL_HDIO; /* high byte input */ + outw(mode, dev->iobase + PCI1723_DIO_CTRL_REG); + + return insn->n; +} + +static int pci1723_dio_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + if (comedi_dio_update_state(s, data)) + outw(s->state, dev->iobase + PCI1723_DIO_DATA_REG); + + data[1] = inw(dev->iobase + PCI1723_DIO_DATA_REG); + + return insn->n; +} + +static int pci1723_auto_attach(struct comedi_device *dev, + unsigned long context_unused) +{ + struct pci_dev *pcidev = comedi_to_pci_dev(dev); + struct comedi_subdevice *s; + unsigned int val; + int ret; + int i; + + ret = comedi_pci_enable(dev); + if (ret) + return ret; + dev->iobase = pci_resource_start(pcidev, 2); + + ret = comedi_alloc_subdevices(dev, 2); + if (ret) + return ret; + + s = &dev->subdevices[0]; + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON; + s->n_chan = 8; + s->maxdata = 0xffff; + s->range_table = &range_bipolar10; + s->insn_write = pci1723_ao_insn_write; + + ret = comedi_alloc_subdev_readback(s); + if (ret) + return ret; + + /* synchronously reset all analog outputs to 0V, +/-10V range */ + outw(PCI1723_SYNC_CTRL_SYNC, dev->iobase + PCI1723_SYNC_CTRL_REG); + for (i = 0; i < s->n_chan; i++) { + outw(PCI1723_CTRL_RANGE(0) | PCI1723_CTRL_CHAN(i), + PCI1723_CTRL_REG); + outw(0, dev->iobase + PCI1723_RANGE_STROBE_REG); + + outw(0x8000, dev->iobase + PCI1723_AO_REG(i)); + s->readback[i] = 0x8000; + } + outw(0, dev->iobase + PCI1723_SYNC_STROBE_REG); + + /* disable syncronous control */ + outw(PCI1723_SYNC_CTRL_ASYNC, dev->iobase + PCI1723_SYNC_CTRL_REG); + + s = &dev->subdevices[1]; + s->type = COMEDI_SUBD_DIO; + s->subdev_flags = SDF_READABLE | SDF_WRITABLE; + s->n_chan = 16; + s->maxdata = 1; + s->range_table = &range_digital; + s->insn_config = pci1723_dio_insn_config; + s->insn_bits = pci1723_dio_insn_bits; + + /* get initial DIO direction and state */ + val = inw(dev->iobase + PCI1723_DIO_CTRL_REG); + if (!(val & PCI1723_DIO_CTRL_LDIO)) + s->io_bits |= 0x00ff; /* low byte output */ + if (!(val & PCI1723_DIO_CTRL_HDIO)) + s->io_bits |= 0xff00; /* high byte output */ + s->state = inw(dev->iobase + PCI1723_DIO_DATA_REG); + + return 0; +} + +static struct comedi_driver adv_pci1723_driver = { + .driver_name = "adv_pci1723", + .module = THIS_MODULE, + .auto_attach = pci1723_auto_attach, + .detach = comedi_pci_detach, +}; + +static int adv_pci1723_pci_probe(struct pci_dev *dev, + const struct pci_device_id *id) +{ + return comedi_pci_auto_config(dev, &adv_pci1723_driver, + id->driver_data); +} + +static const struct pci_device_id adv_pci1723_pci_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1723) }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, adv_pci1723_pci_table); + +static struct pci_driver adv_pci1723_pci_driver = { + .name = "adv_pci1723", + .id_table = adv_pci1723_pci_table, + .probe = adv_pci1723_pci_probe, + .remove = comedi_pci_auto_unconfig, +}; +module_comedi_pci_driver(adv_pci1723_driver, adv_pci1723_pci_driver); + +MODULE_AUTHOR("Comedi https://www.comedi.org"); +MODULE_DESCRIPTION("Advantech PCI-1723 Comedi driver"); +MODULE_LICENSE("GPL"); |