diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/pcl724.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/pcl724.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/pcl724.c b/drivers/staging/comedi/drivers/pcl724.c new file mode 100644 index 000000000000..cd1e784f25f9 --- /dev/null +++ b/drivers/staging/comedi/drivers/pcl724.c @@ -0,0 +1,222 @@ +/* + comedi/drivers/pcl724.c + + Michal Dobes <dobes@tesnet.cz> + + hardware driver for Advantech cards: + card: PCL-724, PCL-722, PCL-731 + driver: pcl724, pcl722, pcl731 + and ADLink cards: + card: ACL-7122, ACL-7124, PET-48DIO + driver: acl7122, acl7124, pet48dio + + Options for PCL-724, PCL-731, ACL-7124 and PET-48DIO: + [0] - IO Base + + Options for PCL-722 and ACL-7122: + [0] - IO Base + [1] - IRQ (0=disable IRQ) IRQ isn't supported at this time! + [2] -number of DIO: + 0, 144: 144 DIO configuration + 1, 96: 96 DIO configuration +*/ +/* +Driver: pcl724 +Description: Advantech PCL-724, PCL-722, PCL-731 ADLink ACL-7122, ACL-7124, + PET-48DIO +Author: Michal Dobes <dobes@tesnet.cz> +Devices: [Advantech] PCL-724 (pcl724), PCL-722 (pcl722), PCL-731 (pcl731), + [ADLink] ACL-7122 (acl7122), ACL-7124 (acl7124), PET-48DIO (pet48dio) +Status: untested + +This is driver for digital I/O boards PCL-722/724/731 with 144/24/48 DIO +and for digital I/O boards ACL-7122/7124/PET-48DIO with 144/24/48 DIO. +It need 8255.o for operations and only immediate mode is supported. +See the source for configuration details. +*/ +/* + * check_driver overrides: + * struct comedi_insn + */ + +#include "../comedidev.h" + +#include <linux/ioport.h> +#include <linux/delay.h> + +#include "8255.h" + +#define PCL722_SIZE 32 +#define PCL722_96_SIZE 16 +#define PCL724_SIZE 4 +#define PCL731_SIZE 8 +#define PET48_SIZE 2 + +#define SIZE_8255 4 + +// #define PCL724_IRQ 1 /* no IRQ support now */ + +static int pcl724_attach(struct comedi_device * dev, struct comedi_devconfig * it); +static int pcl724_detach(struct comedi_device * dev); + +struct pcl724_board { + + const char *name; // board name + int dio; // num of DIO + int numofports; // num of 8255 subdevices + unsigned int IRQbits; // allowed interrupts + unsigned int io_range; // len of IO space + char can_have96; + char is_pet48; +}; + + +static const struct pcl724_board boardtypes[] = { + {"pcl724", 24, 1, 0x00fc, PCL724_SIZE, 0, 0,}, + {"pcl722", 144, 6, 0x00fc, PCL722_SIZE, 1, 0,}, + {"pcl731", 48, 2, 0x9cfc, PCL731_SIZE, 0, 0,}, + {"acl7122", 144, 6, 0x9ee8, PCL722_SIZE, 1, 0,}, + {"acl7124", 24, 1, 0x00fc, PCL724_SIZE, 0, 0,}, + {"pet48dio", 48, 2, 0x9eb8, PET48_SIZE, 0, 1,}, +}; + +#define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl724_board)) +#define this_board ((const struct pcl724_board *)dev->board_ptr) + +static struct comedi_driver driver_pcl724 = { + driver_name:"pcl724", + module:THIS_MODULE, + attach:pcl724_attach, + detach:pcl724_detach, + board_name:&boardtypes[0].name, + num_names:n_boardtypes, + offset:sizeof(struct pcl724_board), +}; + +COMEDI_INITCLEANUP(driver_pcl724); + +static int subdev_8255_cb(int dir, int port, int data, unsigned long arg) +{ + unsigned long iobase = arg; + + if (dir) { + outb(data, iobase + port); + return 0; + } else { + return inb(iobase + port); + } +} + +static int subdev_8255mapped_cb(int dir, int port, int data, + unsigned long iobase) +{ + int movport = SIZE_8255 * (iobase >> 12); + + iobase &= 0x0fff; + + if (dir) { + outb(port + movport, iobase); + outb(data, iobase + 1); + return 0; + } else { + outb(port + movport, iobase); + return inb(iobase + 1); + } +} + +static int pcl724_attach(struct comedi_device * dev, struct comedi_devconfig * it) +{ + unsigned long iobase; + unsigned int iorange; + int ret, i, n_subdevices; +#ifdef PCL724_IRQ + unsigned int irq; +#endif + + iobase = it->options[0]; + iorange = this_board->io_range; + if ((this_board->can_have96) && ((it->options[1] == 1) + || (it->options[1] == 96))) + iorange = PCL722_96_SIZE; // PCL-724 in 96 DIO configuration + printk("comedi%d: pcl724: board=%s, 0x%03lx ", dev->minor, + this_board->name, iobase); + if (!request_region(iobase, iorange, "pcl724")) { + printk("I/O port conflict\n"); + return -EIO; + } + + dev->iobase = iobase; + + dev->board_name = this_board->name; + +#ifdef PCL724_IRQ + irq = 0; + if (this_board->IRQbits != 0) { /* board support IRQ */ + irq = it->options[1]; + if (irq) { /* we want to use IRQ */ + if (((1 << irq) & this_board->IRQbits) == 0) { + rt_printk + (", IRQ %u is out of allowed range, DISABLING IT", + irq); + irq = 0; /* Bad IRQ */ + } else { + if (comedi_request_irq(irq, interrupt_pcl724, 0, + "pcl724", dev)) { + rt_printk + (", unable to allocate IRQ %u, DISABLING IT", + irq); + irq = 0; /* Can't use IRQ */ + } else { + rt_printk(", irq=%u", irq); + } + } + } + } + + dev->irq = irq; +#endif + + printk("\n"); + + n_subdevices = this_board->numofports; + if ((this_board->can_have96) && ((it->options[1] == 1) + || (it->options[1] == 96))) + n_subdevices = 4; // PCL-724 in 96 DIO configuration + + if ((ret = alloc_subdevices(dev, n_subdevices)) < 0) + return ret; + + for (i = 0; i < dev->n_subdevices; i++) { + if (this_board->is_pet48) { + subdev_8255_init(dev, dev->subdevices + i, + subdev_8255mapped_cb, + (unsigned long)(dev->iobase + i * 0x1000)); + } else + subdev_8255_init(dev, dev->subdevices + i, + subdev_8255_cb, + (unsigned long)(dev->iobase + SIZE_8255 * i)); + }; + + return 0; +} + +static int pcl724_detach(struct comedi_device * dev) +{ + int i; + +// printk("comedi%d: pcl724: remove\n",dev->minor); + + for (i = 0; i < dev->n_subdevices; i++) { + subdev_8255_cleanup(dev, dev->subdevices + i); + } + +#ifdef PCL724_IRQ + if (dev->irq) { + comedi_free_irq(dev->irq, dev); + } +#endif + + release_region(dev->iobase, this_board->io_range); + + return 0; +} |