351 lines
9.0 KiB
C
351 lines
9.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* comedi/drivers/pcl730.c
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* Driver for Advantech PCL-730 and clones
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* José Luis Sánchez
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*/
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/*
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* Driver: pcl730
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* Description: Advantech PCL-730 (& compatibles)
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* Devices: [Advantech] PCL-730 (pcl730), PCM-3730 (pcm3730), PCL-725 (pcl725),
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* PCL-733 (pcl733), PCL-734 (pcl734),
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* [ADLink] ACL-7130 (acl7130), ACL-7225b (acl7225b),
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* [ICP] ISO-730 (iso730), P8R8-DIO (p8r8dio), P16R16-DIO (p16r16dio),
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* [Diamond Systems] OPMM-1616-XT (opmm-1616-xt), PEARL-MM-P (pearl-mm-p),
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* IR104-PBF (ir104-pbf),
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* Author: José Luis Sánchez (jsanchezv@teleline.es)
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* Status: untested
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*
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* Configuration options:
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* [0] - I/O port base
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*
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* Interrupts are not supported.
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* The ACL-7130 card has an 8254 timer/counter not supported by this driver.
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*/
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#include <linux/module.h>
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#include <linux/comedi/comedidev.h>
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/*
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* Register map
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*
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* The register map varies slightly depending on the board type but
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* all registers are 8-bit.
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*
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* The boardinfo 'io_range' is used to allow comedi to request the
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* proper range required by the board.
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*
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* The comedi_subdevice 'private' data is used to pass the register
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* offset to the (*insn_bits) functions to read/write the correct
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* registers.
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*
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* The basic register mapping looks like this:
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*
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* BASE+0 Isolated outputs 0-7 (write) / inputs 0-7 (read)
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* BASE+1 Isolated outputs 8-15 (write) / inputs 8-15 (read)
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* BASE+2 TTL outputs 0-7 (write) / inputs 0-7 (read)
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* BASE+3 TTL outputs 8-15 (write) / inputs 8-15 (read)
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*
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* The pcm3730 board does not have register BASE+1.
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*
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* The pcl725 and p8r8dio only have registers BASE+0 and BASE+1:
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*
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* BASE+0 Isolated outputs 0-7 (write) (read back on p8r8dio)
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* BASE+1 Isolated inputs 0-7 (read)
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*
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* The acl7225b and p16r16dio boards have this register mapping:
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*
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* BASE+0 Isolated outputs 0-7 (write) (read back)
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* BASE+1 Isolated outputs 8-15 (write) (read back)
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* BASE+2 Isolated inputs 0-7 (read)
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* BASE+3 Isolated inputs 8-15 (read)
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*
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* The pcl733 and pcl733 boards have this register mapping:
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*
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* BASE+0 Isolated outputs 0-7 (write) or inputs 0-7 (read)
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* BASE+1 Isolated outputs 8-15 (write) or inputs 8-15 (read)
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* BASE+2 Isolated outputs 16-23 (write) or inputs 16-23 (read)
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* BASE+3 Isolated outputs 24-31 (write) or inputs 24-31 (read)
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*
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* The opmm-1616-xt board has this register mapping:
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*
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* BASE+0 Isolated outputs 0-7 (write) (read back)
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* BASE+1 Isolated outputs 8-15 (write) (read back)
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* BASE+2 Isolated inputs 0-7 (read)
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* BASE+3 Isolated inputs 8-15 (read)
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*
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* These registers are not currently supported:
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*
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* BASE+2 Relay select register (write)
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* BASE+3 Board reset control register (write)
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* BASE+4 Interrupt control register (write)
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* BASE+4 Change detect 7-0 status register (read)
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* BASE+5 LED control register (write)
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* BASE+5 Change detect 15-8 status register (read)
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*
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* The pearl-mm-p board has this register mapping:
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*
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* BASE+0 Isolated outputs 0-7 (write)
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* BASE+1 Isolated outputs 8-15 (write)
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*
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* The ir104-pbf board has this register mapping:
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*
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* BASE+0 Isolated outputs 0-7 (write) (read back)
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* BASE+1 Isolated outputs 8-15 (write) (read back)
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* BASE+2 Isolated outputs 16-19 (write) (read back)
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* BASE+4 Isolated inputs 0-7 (read)
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* BASE+5 Isolated inputs 8-15 (read)
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* BASE+6 Isolated inputs 16-19 (read)
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*/
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struct pcl730_board {
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const char *name;
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unsigned int io_range;
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unsigned is_pcl725:1;
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unsigned is_acl7225b:1;
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unsigned is_ir104:1;
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unsigned has_readback:1;
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unsigned has_ttl_io:1;
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int n_subdevs;
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int n_iso_out_chan;
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int n_iso_in_chan;
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int n_ttl_chan;
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};
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static const struct pcl730_board pcl730_boards[] = {
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{
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.name = "pcl730",
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.io_range = 0x04,
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.has_ttl_io = 1,
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.n_subdevs = 4,
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.n_iso_out_chan = 16,
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.n_iso_in_chan = 16,
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.n_ttl_chan = 16,
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}, {
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.name = "iso730",
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.io_range = 0x04,
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.n_subdevs = 4,
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.n_iso_out_chan = 16,
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.n_iso_in_chan = 16,
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.n_ttl_chan = 16,
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}, {
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.name = "acl7130",
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.io_range = 0x08,
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.has_ttl_io = 1,
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.n_subdevs = 4,
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.n_iso_out_chan = 16,
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.n_iso_in_chan = 16,
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.n_ttl_chan = 16,
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}, {
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.name = "pcm3730",
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.io_range = 0x04,
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.has_ttl_io = 1,
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.n_subdevs = 4,
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.n_iso_out_chan = 8,
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.n_iso_in_chan = 8,
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.n_ttl_chan = 16,
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}, {
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.name = "pcl725",
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.io_range = 0x02,
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.is_pcl725 = 1,
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.n_subdevs = 2,
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.n_iso_out_chan = 8,
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.n_iso_in_chan = 8,
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}, {
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.name = "p8r8dio",
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.io_range = 0x02,
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.is_pcl725 = 1,
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.has_readback = 1,
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.n_subdevs = 2,
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.n_iso_out_chan = 8,
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.n_iso_in_chan = 8,
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}, {
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.name = "acl7225b",
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.io_range = 0x08, /* only 4 are used */
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.is_acl7225b = 1,
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.has_readback = 1,
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.n_subdevs = 2,
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.n_iso_out_chan = 16,
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.n_iso_in_chan = 16,
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}, {
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.name = "p16r16dio",
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.io_range = 0x04,
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.is_acl7225b = 1,
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.has_readback = 1,
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.n_subdevs = 2,
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.n_iso_out_chan = 16,
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.n_iso_in_chan = 16,
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}, {
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.name = "pcl733",
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.io_range = 0x04,
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.n_subdevs = 1,
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.n_iso_in_chan = 32,
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}, {
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.name = "pcl734",
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.io_range = 0x04,
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.n_subdevs = 1,
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.n_iso_out_chan = 32,
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}, {
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.name = "opmm-1616-xt",
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.io_range = 0x10,
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.is_acl7225b = 1,
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.has_readback = 1,
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.n_subdevs = 2,
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.n_iso_out_chan = 16,
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.n_iso_in_chan = 16,
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}, {
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.name = "pearl-mm-p",
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.io_range = 0x02,
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.n_subdevs = 1,
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.n_iso_out_chan = 16,
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}, {
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.name = "ir104-pbf",
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.io_range = 0x08,
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.is_ir104 = 1,
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.has_readback = 1,
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.n_iso_out_chan = 20,
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.n_iso_in_chan = 20,
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},
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};
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static int pcl730_do_insn_bits(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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unsigned long reg = (unsigned long)s->private;
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unsigned int mask;
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mask = comedi_dio_update_state(s, data);
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if (mask) {
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if (mask & 0x00ff)
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outb(s->state & 0xff, dev->iobase + reg);
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if ((mask & 0xff00) && (s->n_chan > 8))
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outb((s->state >> 8) & 0xff, dev->iobase + reg + 1);
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if ((mask & 0xff0000) && (s->n_chan > 16))
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outb((s->state >> 16) & 0xff, dev->iobase + reg + 2);
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if ((mask & 0xff000000) && (s->n_chan > 24))
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outb((s->state >> 24) & 0xff, dev->iobase + reg + 3);
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}
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data[1] = s->state;
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return insn->n;
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}
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static unsigned int pcl730_get_bits(struct comedi_device *dev,
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struct comedi_subdevice *s)
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{
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unsigned long reg = (unsigned long)s->private;
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unsigned int val;
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val = inb(dev->iobase + reg);
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if (s->n_chan > 8)
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val |= (inb(dev->iobase + reg + 1) << 8);
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if (s->n_chan > 16)
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val |= (inb(dev->iobase + reg + 2) << 16);
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if (s->n_chan > 24)
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val |= (inb(dev->iobase + reg + 3) << 24);
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return val;
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}
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static int pcl730_di_insn_bits(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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data[1] = pcl730_get_bits(dev, s);
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return insn->n;
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}
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static int pcl730_attach(struct comedi_device *dev,
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struct comedi_devconfig *it)
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{
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const struct pcl730_board *board = dev->board_ptr;
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struct comedi_subdevice *s;
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int subdev;
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int ret;
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ret = comedi_request_region(dev, it->options[0], board->io_range);
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if (ret)
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return ret;
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ret = comedi_alloc_subdevices(dev, board->n_subdevs);
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if (ret)
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return ret;
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subdev = 0;
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if (board->n_iso_out_chan) {
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/* Isolated Digital Outputs */
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s = &dev->subdevices[subdev++];
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s->type = COMEDI_SUBD_DO;
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s->subdev_flags = SDF_WRITABLE;
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s->n_chan = board->n_iso_out_chan;
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s->maxdata = 1;
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s->range_table = &range_digital;
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s->insn_bits = pcl730_do_insn_bits;
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s->private = (void *)0;
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/* get the initial state if supported */
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if (board->has_readback)
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s->state = pcl730_get_bits(dev, s);
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}
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if (board->n_iso_in_chan) {
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/* Isolated Digital Inputs */
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s = &dev->subdevices[subdev++];
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s->type = COMEDI_SUBD_DI;
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s->subdev_flags = SDF_READABLE;
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s->n_chan = board->n_iso_in_chan;
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s->maxdata = 1;
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s->range_table = &range_digital;
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s->insn_bits = pcl730_di_insn_bits;
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s->private = board->is_ir104 ? (void *)4 :
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board->is_acl7225b ? (void *)2 :
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board->is_pcl725 ? (void *)1 : (void *)0;
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}
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if (board->has_ttl_io) {
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/* TTL Digital Outputs */
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s = &dev->subdevices[subdev++];
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s->type = COMEDI_SUBD_DO;
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s->subdev_flags = SDF_WRITABLE;
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s->n_chan = board->n_ttl_chan;
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s->maxdata = 1;
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s->range_table = &range_digital;
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s->insn_bits = pcl730_do_insn_bits;
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s->private = (void *)2;
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/* TTL Digital Inputs */
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s = &dev->subdevices[subdev++];
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s->type = COMEDI_SUBD_DI;
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s->subdev_flags = SDF_READABLE;
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s->n_chan = board->n_ttl_chan;
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s->maxdata = 1;
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s->range_table = &range_digital;
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s->insn_bits = pcl730_di_insn_bits;
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s->private = (void *)2;
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}
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return 0;
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}
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static struct comedi_driver pcl730_driver = {
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.driver_name = "pcl730",
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.module = THIS_MODULE,
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.attach = pcl730_attach,
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.detach = comedi_legacy_detach,
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.board_name = &pcl730_boards[0].name,
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.num_names = ARRAY_SIZE(pcl730_boards),
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.offset = sizeof(struct pcl730_board),
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};
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module_comedi_driver(pcl730_driver);
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MODULE_AUTHOR("Comedi https://www.comedi.org");
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MODULE_DESCRIPTION("Comedi low-level driver");
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MODULE_LICENSE("GPL");
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