diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/adl_pci6208.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/adl_pci6208.c | 391 |
1 files changed, 391 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 000000000000..f710f551820d --- /dev/null +++ b/drivers/staging/comedi/drivers/adl_pci6208.c @@ -0,0 +1,391 @@ +/* + comedi/drivers/adl_pci6208.c + + Hardware driver for ADLink 6208 series cards: + card | voltage output | current output + -------------+-------------------+--------------- + PCI-6208V | 8 channels | - + PCI-6216V | 16 channels | - + PCI-6208A | 8 channels | 8 channels + + 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: adl_pci6208 +Description: ADLink PCI-6208A +Devices: [ADLink] PCI-6208A (adl_pci6208) +Author: nsyeow <nsyeow@pd.jaring.my> +Updated: Fri, 30 Jan 2004 14:44:27 +0800 +Status: untested + +Configuration Options: + none + +References: + - ni_660x.c + - adl_pci9111.c copied the entire pci setup section + - adl_pci9118.c +*/ +/* + * These headers should be followed by a blank line, and any comments + * you wish to say about the driver. The comment area is the place + * to put any known bugs, limitations, unsupported features, supported + * command triggers, whether or not commands are supported on particular + * subdevices, etc. + * + * Somewhere in the comment should be information about configuration + * options that are used with comedi_config. + */ +#include "../comedidev.h" +#include "comedi_pci.h" + +#define PCI6208_DRIVER_NAME "adl_pci6208" + +/* Board descriptions */ +struct pci6208_board { + const char *name; + unsigned short dev_id; /* `lspci` will show you this */ + int ao_chans; + //int ao_bits; +}; + +static const struct pci6208_board pci6208_boards[] = { + /*{ + name : "pci6208v", + dev_id : 0x6208, //not sure + ao_chans: 8 + //, ao_bits : 16 + }, + { + name : "pci6216v", + dev_id : 0x6208, //not sure + ao_chans: 16 + //, ao_bits : 16 + }, */ + { + name: "pci6208a", + dev_id: 0x6208, + ao_chans:8 + //, ao_bits : 16 + } +}; + +/* 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(pci6208_pci_table) = { + //{ PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, + //{ PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, + {PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + {0} +}; + +MODULE_DEVICE_TABLE(pci, pci6208_pci_table); + +/* Will be initialized in pci6208_find device(). */ +#define thisboard ((const struct pci6208_board *)dev->board_ptr) + +struct pci6208_private { + int data; + struct pci_dev *pci_dev; /* for a PCI device */ + unsigned int ao_readback[2]; /* Used for AO readback */ +}; + +#define devpriv ((struct pci6208_private *)dev->private) + +static int pci6208_attach(struct comedi_device * dev, struct comedi_devconfig * it); +static int pci6208_detach(struct comedi_device * dev); + +#define pci6208_board_nbr \ + (sizeof(pci6208_boards) / sizeof(struct pci6208_board)) + +static struct comedi_driver driver_pci6208 = { + driver_name:PCI6208_DRIVER_NAME, + module:THIS_MODULE, + attach:pci6208_attach, + detach:pci6208_detach, +}; + +COMEDI_PCI_INITCLEANUP(driver_pci6208, pci6208_pci_table); + +static int pci6208_find_device(struct comedi_device * dev, int bus, int slot); +static int +pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, + int dev_minor); + +/*read/write functions*/ +static int pci6208_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +static int pci6208_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data); +//static int pci6208_dio_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, +// struct comedi_insn *insn,unsigned int *data); +//static int pci6208_dio_insn_config(struct comedi_device *dev,struct comedi_subdevice *s, +// struct comedi_insn *insn,unsigned int *data); + +/* + * Attach is called by the Comedi core to configure the driver + * for a particular board. If you specified a board_name array + * in the driver structure, dev->board_ptr contains that + * address. + */ +static int pci6208_attach(struct comedi_device * dev, struct comedi_devconfig * it) +{ + struct comedi_subdevice *s; + int retval; + unsigned long io_base; + + printk("comedi%d: pci6208: ", dev->minor); + + retval = alloc_private(dev, sizeof(struct pci6208_private)); + if (retval < 0) + return retval; + + retval = pci6208_find_device(dev, it->options[0], it->options[1]); + if (retval < 0) + return retval; + + retval = pci6208_pci_setup(devpriv->pci_dev, &io_base, dev->minor); + if (retval < 0) + return retval; + + dev->iobase = io_base; + dev->board_name = thisboard->name; + +/* + * Allocate the subdevice structures. alloc_subdevice() is a + * convenient macro defined in comedidev.h. + */ + if (alloc_subdevices(dev, 2) < 0) + return -ENOMEM; + + s = dev->subdevices + 0; + /* analog output subdevice */ + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE; //anything else to add here?? + s->n_chan = thisboard->ao_chans; + s->maxdata = 0xffff; //16-bit DAC + s->range_table = &range_bipolar10; //this needs to be checked. + s->insn_write = pci6208_ao_winsn; + s->insn_read = pci6208_ao_rinsn; + + //s=dev->subdevices+1; + /* digital i/o subdevice */ + //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_bits = pci6208_dio_insn_bits; + //s->insn_config = pci6208_dio_insn_config; + + printk("attached\n"); + + return 1; +} + +/* + * _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 pci6208_detach(struct comedi_device * dev) +{ + printk("comedi%d: pci6208: remove\n", dev->minor); + + if (devpriv && devpriv->pci_dev) { + if (dev->iobase) { + comedi_pci_disable(devpriv->pci_dev); + } + pci_dev_put(devpriv->pci_dev); + } + + return 0; +} + +static int pci6208_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int i = 0, Data_Read; + unsigned short chan = CR_CHAN(insn->chanspec); + unsigned long invert = 1 << (16 - 1); + unsigned long out_value; + /* Writing a list of values to an AO channel is probably not + * very useful, but that's how the interface is defined. */ + for (i = 0; i < insn->n; i++) { + out_value = data[i] ^ invert; + /* a typical programming sequence */ + do { + Data_Read = (inw(dev->iobase) & 1); + } while (Data_Read); + outw(out_value, dev->iobase + (0x02 * chan)); + devpriv->ao_readback[chan] = out_value; + } + + /* return the number of samples read/written */ + return i; +} + +/* AO subdevices should have a read insn as well as a write insn. + * Usually this means copying a value stored in devpriv. */ +static int pci6208_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int i; + int chan = CR_CHAN(insn->chanspec); + + for (i = 0; i < insn->n; i++) + data[i] = devpriv->ao_readback[chan]; + + return i; +} + +/* DIO devices are slightly special. Although it is possible to + * implement the insn_read/insn_write interface, it is much more + * useful to applications if you implement the insn_bits interface. + * This allows packed reading/writing of the DIO channels. The + * comedi core can convert between insn_bits and insn_read/write */ +//static int pci6208_dio_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, +// struct comedi_insn *insn,unsigned int *data) +//{ +// if(insn->n!=2)return -EINVAL; + + /* The insn data is a mask in data[0] and the new data + * in data[1], each channel cooresponding to a bit. */ +// if(data[0]){ +// s->state &= ~data[0]; +// s->state |= data[0]&data[1]; + /* Write out the new digital output lines */ + //outw(s->state,dev->iobase + SKEL_DIO); +// } + + /* on return, data[1] contains the value of the digital + * input and output lines. */ + //data[1]=inw(dev->iobase + SKEL_DIO); + /* or we could just return the software copy of the output values if + * it was a purely digital output subdevice */ + //data[1]=s->state; + +// return 2; +//} + +//static int pci6208_dio_insn_config(struct comedi_device *dev,struct comedi_subdevice *s, +// struct comedi_insn *insn,unsigned int *data) +//{ +// int chan=CR_CHAN(insn->chanspec); + + /* The input or output configuration of each digital line is + * configured by a special insn_config instruction. chanspec + * contains the channel to be changed, and data[0] contains the + * value COMEDI_INPUT or COMEDI_OUTPUT. */ + +// if(data[0]==COMEDI_OUTPUT){ +// s->io_bits |= 1<<chan; +// }else{ +// s->io_bits &= ~(1<<chan); +// } + //outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG); + +// return 1; +//} + +static int pci6208_find_device(struct comedi_device * dev, int bus, int slot) +{ + struct pci_dev *pci_dev; + int i; + + for (pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); + pci_dev != NULL; + pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) { + if (pci_dev->vendor == PCI_VENDOR_ID_ADLINK) { + for (i = 0; i < pci6208_board_nbr; i++) { + if (pci6208_boards[i].dev_id == pci_dev->device) { + // was a particular bus/slot requested? + if ((bus != 0) || (slot != 0)) { + // are we on the wrong bus/slot? + if (pci_dev->bus->number + != bus || + PCI_SLOT(pci_dev->devfn) + != slot) { + continue; + } + } + dev->board_ptr = pci6208_boards + i; + goto found; + } + } + } + } + + printk("comedi%d: no supported board found! (req. bus/slot : %d/%d)\n", + dev->minor, bus, slot); + return -EIO; + + found: + printk("comedi%d: found %s (b:s:f=%d:%d:%d) , irq=%d\n", + dev->minor, + pci6208_boards[i].name, + pci_dev->bus->number, + PCI_SLOT(pci_dev->devfn), + PCI_FUNC(pci_dev->devfn), pci_dev->irq); + + // TODO: Warn about non-tested boards. + //switch(board->device_id) + //{ + //}; + + devpriv->pci_dev = pci_dev; + + return 0; +} + +static int +pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, + int dev_minor) +{ + unsigned long io_base, io_range, lcr_io_base, lcr_io_range; + + // Enable PCI device and request regions + if (comedi_pci_enable(pci_dev, PCI6208_DRIVER_NAME) < 0) { + printk("comedi%d: Failed to enable PCI device and request regions\n", dev_minor); + return -EIO; + } + // Read local configuration register base address [PCI_BASE_ADDRESS #1]. + lcr_io_base = pci_resource_start(pci_dev, 1); + lcr_io_range = pci_resource_len(pci_dev, 1); + + printk("comedi%d: local config registers at address 0x%4lx [0x%4lx]\n", + dev_minor, lcr_io_base, lcr_io_range); + + // Read PCI6208 register base address [PCI_BASE_ADDRESS #2]. + io_base = pci_resource_start(pci_dev, 2); + io_range = pci_resource_end(pci_dev, 2) - io_base + 1; + + printk("comedi%d: 6208 registers at address 0x%4lx [0x%4lx]\n", + dev_minor, io_base, io_range); + + *io_base_ptr = io_base; + //devpriv->io_range = io_range; + //devpriv->is_valid=0; + //devpriv->lcr_io_base=lcr_io_base; + //devpriv->lcr_io_range=lcr_io_range; + + return 0; +} |