diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/ssv_dnp.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/ssv_dnp.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/drivers/staging/comedi/drivers/ssv_dnp.c b/drivers/staging/comedi/drivers/ssv_dnp.c deleted file mode 100644 index 016d315aa584..000000000000 --- a/drivers/staging/comedi/drivers/ssv_dnp.c +++ /dev/null @@ -1,180 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * ssv_dnp.c - * generic comedi driver for SSV Embedded Systems' DIL/Net-PCs - * Copyright (C) 2001 Robert Schwebel <robert@schwebel.de> - * - * COMEDI - Linux Control and Measurement Device Interface - * Copyright (C) 2000 David A. Schleef <ds@schleef.org> - */ - -/* - * Driver: ssv_dnp - * Description: SSV Embedded Systems DIL/Net-PC - * Author: Robert Schwebel <robert@schwebel.de> - * Devices: [SSV Embedded Systems] DIL/Net-PC 1486 (dnp-1486) - * Status: unknown - */ - -/* include files ----------------------------------------------------------- */ - -#include <linux/module.h> -#include "../comedidev.h" - -/* Some global definitions: the registers of the DNP ----------------------- */ -/* */ -/* For port A and B the mode register has bits corresponding to the output */ -/* pins, where Bit-N = 0 -> input, Bit-N = 1 -> output. Note that bits */ -/* 4 to 7 correspond to pin 0..3 for port C data register. Ensure that bits */ -/* 0..3 remain unchanged! For details about Port C Mode Register see */ -/* the remarks in dnp_insn_config() below. */ - -#define CSCIR 0x22 /* Chip Setup and Control Index Register */ -#define CSCDR 0x23 /* Chip Setup and Control Data Register */ -#define PAMR 0xa5 /* Port A Mode Register */ -#define PADR 0xa9 /* Port A Data Register */ -#define PBMR 0xa4 /* Port B Mode Register */ -#define PBDR 0xa8 /* Port B Data Register */ -#define PCMR 0xa3 /* Port C Mode Register */ -#define PCDR 0xa7 /* Port C Data Register */ - -static int dnp_dio_insn_bits(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - unsigned int mask; - unsigned int val; - - /* - * Ports A and B are straight forward: each bit corresponds to an - * output pin with the same order. Port C is different: bits 0...3 - * correspond to bits 4...7 of the output register (PCDR). - */ - - mask = comedi_dio_update_state(s, data); - if (mask) { - outb(PADR, CSCIR); - outb(s->state & 0xff, CSCDR); - - outb(PBDR, CSCIR); - outb((s->state >> 8) & 0xff, CSCDR); - - outb(PCDR, CSCIR); - val = inb(CSCDR) & 0x0f; - outb(((s->state >> 12) & 0xf0) | val, CSCDR); - } - - outb(PADR, CSCIR); - val = inb(CSCDR); - outb(PBDR, CSCIR); - val |= (inb(CSCDR) << 8); - outb(PCDR, CSCIR); - val |= ((inb(CSCDR) & 0xf0) << 12); - - data[1] = val; - - return insn->n; -} - -static int dnp_dio_insn_config(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - unsigned int chan = CR_CHAN(insn->chanspec); - unsigned int mask; - unsigned int val; - int ret; - - ret = comedi_dio_insn_config(dev, s, insn, data, 0); - if (ret) - return ret; - - if (chan < 8) { /* Port A */ - mask = 1 << chan; - outb(PAMR, CSCIR); - } else if (chan < 16) { /* Port B */ - mask = 1 << (chan - 8); - outb(PBMR, CSCIR); - } else { /* Port C */ - /* - * We have to pay attention with port C. - * This is the meaning of PCMR: - * Bit in PCMR: 7 6 5 4 3 2 1 0 - * Corresponding port C pin: d 3 d 2 d 1 d 0 d= don't touch - * - * Multiplication by 2 brings bits into correct position - * for PCMR! - */ - mask = 1 << ((chan - 16) * 2); - outb(PCMR, CSCIR); - } - - val = inb(CSCDR); - if (data[0] == COMEDI_OUTPUT) - val |= mask; - else - val &= ~mask; - outb(val, CSCDR); - - return insn->n; -} - -static int dnp_attach(struct comedi_device *dev, struct comedi_devconfig *it) -{ - struct comedi_subdevice *s; - int ret; - - /* - * We use I/O ports 0x22, 0x23 and 0xa3-0xa9, which are always - * allocated for the primary 8259, so we don't need to allocate - * them ourselves. - */ - - ret = comedi_alloc_subdevices(dev, 1); - if (ret) - return ret; - - s = &dev->subdevices[0]; - /* digital i/o subdevice */ - s->type = COMEDI_SUBD_DIO; - s->subdev_flags = SDF_READABLE | SDF_WRITABLE; - s->n_chan = 20; - s->maxdata = 1; - s->range_table = &range_digital; - s->insn_bits = dnp_dio_insn_bits; - s->insn_config = dnp_dio_insn_config; - - /* configure all ports as input (default) */ - outb(PAMR, CSCIR); - outb(0x00, CSCDR); - outb(PBMR, CSCIR); - outb(0x00, CSCDR); - outb(PCMR, CSCIR); - outb((inb(CSCDR) & 0xAA), CSCDR); - - return 0; -} - -static void dnp_detach(struct comedi_device *dev) -{ - outb(PAMR, CSCIR); - outb(0x00, CSCDR); - outb(PBMR, CSCIR); - outb(0x00, CSCDR); - outb(PCMR, CSCIR); - outb((inb(CSCDR) & 0xAA), CSCDR); -} - -static struct comedi_driver dnp_driver = { - .driver_name = "dnp-1486", - .module = THIS_MODULE, - .attach = dnp_attach, - .detach = dnp_detach, -}; -module_comedi_driver(dnp_driver); - -MODULE_AUTHOR("Comedi https://www.comedi.org"); -MODULE_DESCRIPTION("Comedi low-level driver"); -MODULE_LICENSE("GPL"); |