diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/adl_pci6208.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/adl_pci6208.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/adl_pci6208.c b/drivers/staging/comedi/drivers/adl_pci6208.c new file mode 100644 index 000000000..7ed3fd6fb --- /dev/null +++ b/drivers/staging/comedi/drivers/adl_pci6208.c @@ -0,0 +1,211 @@ +/* + * adl_pci6208.c + * Comedi driver for ADLink 6208 series cards + * + * COMEDI - Linux Control and Measurement Device Interface + * Copyright (C) 2000 David A. Schleef <ds@schleef.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * Driver: adl_pci6208 + * Description: ADLink PCI-6208/6216 Series Multi-channel Analog Output Cards + * Devices: [ADLink] PCI-6208 (adl_pci6208), PCI-6216 + * Author: nsyeow <nsyeow@pd.jaring.my> + * Updated: Wed, 11 Feb 2015 11:37:18 +0000 + * Status: untested + * + * Configuration Options: not applicable, uses PCI auto config + * + * All supported devices share the same PCI device ID and are treated as a + * PCI-6216 with 16 analog output channels. On a PCI-6208, the upper 8 + * channels exist in registers, but don't go to DAC chips. + */ + +#include <linux/module.h> +#include <linux/delay.h> + +#include "../comedi_pci.h" + +/* + * PCI-6208/6216-GL register map + */ +#define PCI6208_AO_CONTROL(x) (0x00 + (2 * (x))) +#define PCI6208_AO_STATUS 0x00 +#define PCI6208_AO_STATUS_DATA_SEND (1 << 0) +#define PCI6208_DIO 0x40 +#define PCI6208_DIO_DO_MASK (0x0f) +#define PCI6208_DIO_DO_SHIFT (0) +#define PCI6208_DIO_DI_MASK (0xf0) +#define PCI6208_DIO_DI_SHIFT (4) + +static int pci6208_ao_eoc(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned long context) +{ + unsigned int status; + + status = inw(dev->iobase + PCI6208_AO_STATUS); + if ((status & PCI6208_AO_STATUS_DATA_SEND) == 0) + return 0; + return -EBUSY; +} + +static int pci6208_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); + unsigned int val = s->readback[chan]; + int ret; + int i; + + for (i = 0; i < insn->n; i++) { + val = data[i]; + + /* D/A transfer rate is 2.2us */ + ret = comedi_timeout(dev, s, insn, pci6208_ao_eoc, 0); + if (ret) + return ret; + + /* the hardware expects two's complement values */ + outw(comedi_offset_munge(s, val), + dev->iobase + PCI6208_AO_CONTROL(chan)); + + s->readback[chan] = val; + } + + return insn->n; +} + +static int pci6208_di_insn_bits(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) +{ + unsigned int val; + + val = inw(dev->iobase + PCI6208_DIO); + val = (val & PCI6208_DIO_DI_MASK) >> PCI6208_DIO_DI_SHIFT; + + data[1] = val; + + return insn->n; +} + +static int pci6208_do_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 + PCI6208_DIO); + + data[1] = s->state; + + return insn->n; +} + +static int pci6208_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; + + ret = comedi_pci_enable(dev); + if (ret) + return ret; + dev->iobase = pci_resource_start(pcidev, 2); + + ret = comedi_alloc_subdevices(dev, 3); + if (ret) + return ret; + + s = &dev->subdevices[0]; + /* analog output subdevice */ + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE; + s->n_chan = 16; /* Only 8 usable on PCI-6208 */ + s->maxdata = 0xffff; + s->range_table = &range_bipolar10; + s->insn_write = pci6208_ao_insn_write; + + ret = comedi_alloc_subdev_readback(s); + if (ret) + return ret; + + s = &dev->subdevices[1]; + /* digital input subdevice */ + s->type = COMEDI_SUBD_DI; + s->subdev_flags = SDF_READABLE; + s->n_chan = 4; + s->maxdata = 1; + s->range_table = &range_digital; + s->insn_bits = pci6208_di_insn_bits; + + s = &dev->subdevices[2]; + /* digital output subdevice */ + s->type = COMEDI_SUBD_DO; + s->subdev_flags = SDF_WRITABLE; + s->n_chan = 4; + s->maxdata = 1; + s->range_table = &range_digital; + s->insn_bits = pci6208_do_insn_bits; + + /* + * Get the read back signals from the digital outputs + * and save it as the initial state for the subdevice. + */ + val = inw(dev->iobase + PCI6208_DIO); + val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT; + s->state = val; + + return 0; +} + +static struct comedi_driver adl_pci6208_driver = { + .driver_name = "adl_pci6208", + .module = THIS_MODULE, + .auto_attach = pci6208_auto_attach, + .detach = comedi_pci_detach, +}; + +static int adl_pci6208_pci_probe(struct pci_dev *dev, + const struct pci_device_id *id) +{ + return comedi_pci_auto_config(dev, &adl_pci6208_driver, + id->driver_data); +} + +static const struct pci_device_id adl_pci6208_pci_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) }, + { PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, + 0x9999, 0x6208) }, + { 0 } +}; +MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table); + +static struct pci_driver adl_pci6208_pci_driver = { + .name = "adl_pci6208", + .id_table = adl_pci6208_pci_table, + .probe = adl_pci6208_pci_probe, + .remove = comedi_pci_auto_unconfig, +}; +module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver); + +MODULE_AUTHOR("Comedi http://www.comedi.org"); +MODULE_DESCRIPTION("Comedi driver for ADLink 6208 series cards"); +MODULE_LICENSE("GPL"); |