diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/adv_pci1723.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/adv_pci1723.c | 465 |
1 files changed, 465 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/adv_pci1723.c b/drivers/staging/comedi/drivers/adv_pci1723.c new file mode 100644 index 000000000000..81f7ee18c150 --- /dev/null +++ b/drivers/staging/comedi/drivers/adv_pci1723.c @@ -0,0 +1,465 @@ +/******************************************************************************* + comedi/drivers/pci1723.c + + 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. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*******************************************************************************/ +/* +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: + [0] - PCI bus of device (optional) + [1] - PCI slot of device (optional) + + If bus/slot is not specified, the first supported + PCI device found will be used. + +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 "../comedidev.h" + +#include "comedi_pci.h" + +#define ADVANTECH_VENDOR 0x13fe /* Advantech PCI vendor ID */ + +// hardware types of the cards +#define TYPE_PCI1723 0 + +#define IORANGE_1723 0x2A + +/* all the registers for the pci1723 board */ +#define PCI1723_DA(N) ((N)<<1) /* W: D/A register N (0 to 7) */ + +#define PCI1723_SYN_SET 0x12 /*synchronized set register */ +#define PCI1723_ALL_CHNNELE_SYN_STROBE 0x12 /*synchronized status register */ + +#define PCI1723_RANGE_CALIBRATION_MODE 0x14 /* range and calibration mode */ +#define PCI1723_RANGE_CALIBRATION_STATUS 0x14 /* range and calibration status */ + +#define PCI1723_CONTROL_CMD_CALIBRATION_FUN 0x16 /* SADC control command for calibration function */ +#define PCI1723_STATUS_CMD_CALIBRATION_FUN 0x16 /* SADC control status for calibration function */ + +#define PCI1723_CALIBRATION_PARA_STROBE 0x18 /* Calibration parameter strobe */ + +#define PCI1723_DIGITAL_IO_PORT_SET 0x1A /* Digital I/O port setting */ +#define PCI1723_DIGITAL_IO_PORT_MODE 0x1A /* Digital I/O port mode */ + +#define PCI1723_WRITE_DIGITAL_OUTPUT_CMD 0x1C /* Write digital output command */ +#define PCI1723_READ_DIGITAL_INPUT_DATA 0x1C /* Read digital input data */ + +#define PCI1723_WRITE_CAL_CMD 0x1E /* Write calibration command */ +#define PCI1723_READ_CAL_STATUS 0x1E /* Read calibration status */ + +#define PCI1723_SYN_STROBE 0x20 /* Synchronized strobe */ + +#define PCI1723_RESET_ALL_CHN_STROBE 0x22 /* Reset all D/A channels strobe */ + +#define PCI1723_RESET_CAL_CONTROL_STROBE 0x24 /* Reset the calibration controller strobe */ + +#define PCI1723_CHANGE_CHA_OUTPUT_TYPE_STROBE 0x26 /* Change D/A channels output type strobe */ + +#define PCI1723_SELECT_CALIBRATION 0x28 /* Select the calibration Ref_V */ + +//static unsigned short pci_list_builded=0; /*=1 list of card is know */ + +static const struct comedi_lrange range_pci1723 = { 1, { + BIP_RANGE(10) + } +}; + +/* + * Board descriptions for pci1723 boards. + */ +struct pci1723_board { + const char *name; + int vendor_id; // PCI vendor a device ID of card + int device_id; + int iorange; + char cardtype; + int n_aochan; // num of D/A chans + int n_diochan; // num of DIO chans + int ao_maxdata; // resolution of D/A + const struct comedi_lrange *rangelist_ao; // rangelist for D/A +}; + +static const struct pci1723_board boardtypes[] = { + { + name: "pci1723", + vendor_id:ADVANTECH_VENDOR, + device_id:0x1723, + iorange: IORANGE_1723, + cardtype:TYPE_PCI1723, + n_aochan:8, + n_diochan:16, + ao_maxdata:0xffff, + rangelist_ao:&range_pci1723, + }, +}; + +/* This is used by modprobe to translate PCI IDs to drivers. Should + * only be used for PCI and ISA-PnP devices */ +static DEFINE_PCI_DEVICE_TABLE(pci1723_pci_table) = { + {PCI_VENDOR_ID_ADVANTECH, 0x1723, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + {0} +}; + +MODULE_DEVICE_TABLE(pci, pci1723_pci_table); + +/* + * The struct comedi_driver structure tells the Comedi core module + * which functions to call to configure/deconfigure (attach/detach) + * the board, and also about the kernel module that contains + * the device code. + */ +static int pci1723_attach(struct comedi_device * dev, struct comedi_devconfig * it); +static int pci1723_detach(struct comedi_device * dev); + +#define n_boardtypes (sizeof(boardtypes)/sizeof(struct pci1723_board)) + +static struct comedi_driver driver_pci1723 = { + driver_name:"adv_pci1723", + module:THIS_MODULE, + attach:pci1723_attach, + detach:pci1723_detach, +}; + +/* this structure is for data unique to this hardware driver. */ +struct pci1723_private { + int valid; //card is usable; + + struct pci_dev *pcidev; + unsigned char da_range[8]; // D/A output range for each channel + + short ao_data[8]; // data output buffer +}; + +/*the following macro to make it easy to +* access the private structure. +*/ +#define devpriv ((struct pci1723_private *)dev->private) + +#define this_board boardtypes + +/* + * the pci1723 card reset; + */ +static int pci1723_reset(struct comedi_device * dev) +{ + int i; + DPRINTK("adv_pci1723 EDBG: BGN: pci1723_reset(...)\n"); + + outw(0x01, dev->iobase + PCI1723_SYN_SET); // set synchronous output mode + + for (i = 0; i < 8; i++) { + // set all outputs to 0V + devpriv->ao_data[i] = 0x8000; + outw(devpriv->ao_data[i], dev->iobase + PCI1723_DA(i)); + // set all ranges to +/- 10V + devpriv->da_range[i] = 0; + outw(((devpriv->da_range[i] << 4) | i), + PCI1723_RANGE_CALIBRATION_MODE); + } + + outw(0, dev->iobase + PCI1723_CHANGE_CHA_OUTPUT_TYPE_STROBE); // update ranges + outw(0, dev->iobase + PCI1723_SYN_STROBE); // update outputs + + // set asynchronous output mode + outw(0, dev->iobase + PCI1723_SYN_SET); + + DPRINTK("adv_pci1723 EDBG: END: pci1723_reset(...)\n"); + return 0; +} + +static int pci1723_insn_read_ao(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int n, chan; + + chan = CR_CHAN(insn->chanspec); + DPRINTK(" adv_PCI1723 DEBUG: pci1723_insn_read_ao() ----- \n"); + for (n = 0; n < insn->n; n++) + data[n] = devpriv->ao_data[chan]; + + return n; +} + +/* + analog data output; +*/ +static int pci1723_ao_write_winsn(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int n, chan; + chan = CR_CHAN(insn->chanspec); + + DPRINTK("PCI1723: the pci1723_ao_write_winsn() ------\n"); + + for (n = 0; n < insn->n; n++) { + + devpriv->ao_data[chan] = data[n]; + outw(data[n], dev->iobase + PCI1723_DA(chan)); + } + + return n; +} + +/* + digital i/o config/query +*/ +static int pci1723_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + unsigned int mask; + unsigned int bits; + unsigned short dio_mode; + + mask = 1 << CR_CHAN(insn->chanspec); + if (mask & 0x00FF) { + bits = 0x00FF; + } else { + bits = 0xFF00; + } + switch (data[0]) { + case INSN_CONFIG_DIO_INPUT: + s->io_bits &= ~bits; + break; + case INSN_CONFIG_DIO_OUTPUT: + s->io_bits |= bits; + break; + case INSN_CONFIG_DIO_QUERY: + data[1] = (s->io_bits & bits) ? COMEDI_OUTPUT : COMEDI_INPUT; + return insn->n; + default: + return -EINVAL; + } + + // update hardware DIO mode + dio_mode = 0x0000; // low byte output, high byte output + if ((s->io_bits & 0x00FF) == 0) + dio_mode |= 0x0001; // low byte input + if ((s->io_bits & 0xFF00) == 0) + dio_mode |= 0x0002; // high byte input + outw(dio_mode, dev->iobase + PCI1723_DIGITAL_IO_PORT_SET); + return 1; +} + +/* + digital i/o bits read/write +*/ +static int pci1723_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + if (data[0]) { + s->state &= ~data[0]; + s->state |= (data[0] & data[1]); + outw(s->state, dev->iobase + PCI1723_WRITE_DIGITAL_OUTPUT_CMD); + } + data[1] = inw(dev->iobase + PCI1723_READ_DIGITAL_INPUT_DATA); + return 2; +} + +/* + * Attach is called by the Comedi core to configure the driver + * for a pci1723 board. + */ +static int pci1723_attach(struct comedi_device * dev, struct comedi_devconfig * it) +{ + struct comedi_subdevice *s; + int ret, subdev, n_subdevices; + struct pci_dev *pcidev; + unsigned int iobase; + unsigned char pci_bus, pci_slot, pci_func; + int opt_bus, opt_slot; + const char *errstr; + + rt_printk("comedi%d: adv_pci1723: board=%s", dev->minor, + this_board->name); + + opt_bus = it->options[0]; + opt_slot = it->options[1]; + + if ((ret = alloc_private(dev, sizeof(struct pci1723_private))) < 0) { + rt_printk(" - Allocation failed!\n"); + return -ENOMEM; + } + + /* Look for matching PCI device */ + errstr = "not found!"; + pcidev = NULL; + while (NULL != (pcidev = + pci_get_device(PCI_VENDOR_ID_ADVANTECH, + this_board->device_id, pcidev))) { + /* Found matching vendor/device. */ + if (opt_bus || opt_slot) { + /* Check bus/slot. */ + if (opt_bus != pcidev->bus->number + || opt_slot != PCI_SLOT(pcidev->devfn)) + continue; /* no match */ + } + /* + * Look for device that isn't in use. + * Enable PCI device and request regions. + */ + if (comedi_pci_enable(pcidev, "adv_pci1723")) { + errstr = "failed to enable PCI device and request regions!"; + continue; + } + break; + } + + if (!pcidev) { + if (opt_bus || opt_slot) { + rt_printk(" - Card at b:s %d:%d %s\n", + opt_bus, opt_slot, errstr); + } else { + rt_printk(" - Card %s\n", errstr); + } + return -EIO; + } + + pci_bus = pcidev->bus->number; + pci_slot = PCI_SLOT(pcidev->devfn); + pci_func = PCI_FUNC(pcidev->devfn); + iobase = pci_resource_start(pcidev, 2); + + rt_printk(", b:s:f=%d:%d:%d, io=0x%4x", pci_bus, pci_slot, pci_func, + iobase); + + dev->iobase = iobase; + + dev->board_name = this_board->name; + devpriv->pcidev = pcidev; + + n_subdevices = 0; + + if (this_board->n_aochan) + n_subdevices++; + if (this_board->n_diochan) + n_subdevices++; + + if ((ret = alloc_subdevices(dev, n_subdevices)) < 0) { + rt_printk(" - Allocation failed!\n"); + return ret; + } + + pci1723_reset(dev); + subdev = 0; + if (this_board->n_aochan) { + s = dev->subdevices + subdev; + dev->write_subdev = s; + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON; + s->n_chan = this_board->n_aochan; + s->maxdata = this_board->ao_maxdata; + s->len_chanlist = this_board->n_aochan; + s->range_table = this_board->rangelist_ao; + + s->insn_write = pci1723_ao_write_winsn; + s->insn_read = pci1723_insn_read_ao; + + // read DIO config + switch (inw(dev->iobase + PCI1723_DIGITAL_IO_PORT_MODE) & 0x03) { + case 0x00: // low byte output, high byte output + s->io_bits = 0xFFFF; + break; + case 0x01: // low byte input, high byte output + s->io_bits = 0xFF00; + break; + case 0x02: // low byte output, high byte input + s->io_bits = 0x00FF; + break; + case 0x03: // low byte input, high byte input + s->io_bits = 0x0000; + break; + } + // read DIO port state + s->state = inw(dev->iobase + PCI1723_READ_DIGITAL_INPUT_DATA); + + subdev++; + } + + if (this_board->n_diochan) { + s = dev->subdevices + subdev; + s->type = COMEDI_SUBD_DIO; + s->subdev_flags = + SDF_READABLE | SDF_WRITABLE | SDF_GROUND | SDF_COMMON; + s->n_chan = this_board->n_diochan; + s->maxdata = 1; + s->len_chanlist = this_board->n_diochan; + s->range_table = &range_digital; + s->insn_config = pci1723_dio_insn_config; + s->insn_bits = pci1723_dio_insn_bits; + subdev++; + } + + devpriv->valid = 1; + + pci1723_reset(dev); + + return 0; +} + +/* + * _detach is called to deconfigure a device. It should deallocate + * resources. + * This function is also called when _attach() fails, so it should be + * careful not to release resources that were not necessarily + * allocated by _attach(). dev->private and dev->subdevices are + * deallocated automatically by the core. + */ +static int pci1723_detach(struct comedi_device * dev) +{ + printk("comedi%d: pci1723: remove\n", dev->minor); + + if (dev->private) { + if (devpriv->valid) + pci1723_reset(dev); + + if (devpriv->pcidev) { + if (dev->iobase) { + comedi_pci_disable(devpriv->pcidev); + } + pci_dev_put(devpriv->pcidev); + } + } + + return 0; +} + +/* + * A convenient macro that defines init_module() and cleanup_module(), + * as necessary. + */ +COMEDI_PCI_INITCLEANUP(driver_pci1723, pci1723_pci_table); |