1 files changed, 0 insertions, 298 deletions
diff --git a/drivers/staging/comedi/drivers/c6xdigio.c b/drivers/staging/comedi/drivers/c6xdigio.c
deleted file mode 100644
index 786fd15698df..000000000000
--- a/drivers/staging/comedi/drivers/c6xdigio.c
+++ /dev/null
@@ -1,298 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * c6xdigio.c
- * Hardware driver for Mechatronic Systems Inc. C6x_DIGIO DSP daughter card.
- * http://web.archive.org/web/%2A/http://robot0.ge.uiuc.edu/~spong/mecha/
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 1999 Dan Block
- */
-
-/*
- * Driver: c6xdigio
- * Description: Mechatronic Systems Inc. C6x_DIGIO DSP daughter card
- * Author: Dan Block
- * Status: unknown
- * Devices: [Mechatronic Systems Inc.] C6x_DIGIO DSP daughter card (c6xdigio)
- * Updated: Sun Nov 20 20:18:34 EST 2005
- *
- * Configuration Options:
- *	[0] - base address
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/timex.h>
-#include <linux/timer.h>
-#include <linux/io.h>
-#include <linux/pnp.h>
-
-#include "../comedidev.h"
-
-/*
- * Register I/O map
- */
-#define C6XDIGIO_DATA_REG	0x00
-#define C6XDIGIO_DATA_CHAN(x)	(((x) + 1) << 4)
-#define C6XDIGIO_DATA_PWM	BIT(5)
-#define C6XDIGIO_DATA_ENCODER	BIT(6)
-#define C6XDIGIO_STATUS_REG	0x01
-#define C6XDIGIO_CTRL_REG	0x02
-
-#define C6XDIGIO_TIME_OUT 20
-
-static int c6xdigio_chk_status(struct comedi_device *dev, unsigned long context)
-{
-	unsigned int status;
-	int timeout = 0;
-
-	do {
-		status = inb(dev->iobase + C6XDIGIO_STATUS_REG);
-		if ((status & 0x80) != context)
-			return 0;
-		timeout++;
-	} while  (timeout < C6XDIGIO_TIME_OUT);
-
-	return -EBUSY;
-}
-
-static int c6xdigio_write_data(struct comedi_device *dev,
-			       unsigned int val, unsigned int status)
-{
-	outb_p(val, dev->iobase + C6XDIGIO_DATA_REG);
-	return c6xdigio_chk_status(dev, status);
-}
-
-static int c6xdigio_get_encoder_bits(struct comedi_device *dev,
-				     unsigned int *bits,
-				     unsigned int cmd,
-				     unsigned int status)
-{
-	unsigned int val;
-
-	val = inb(dev->iobase + C6XDIGIO_STATUS_REG);
-	val >>= 3;
-	val &= 0x07;
-
-	*bits = val;
-
-	return c6xdigio_write_data(dev, cmd, status);
-}
-
-static void c6xdigio_pwm_write(struct comedi_device *dev,
-			       unsigned int chan, unsigned int val)
-{
-	unsigned int cmd = C6XDIGIO_DATA_PWM | C6XDIGIO_DATA_CHAN(chan);
-	unsigned int bits;
-
-	if (val > 498)
-		val = 498;
-	if (val < 2)
-		val = 2;
-
-	bits = (val >> 0) & 0x03;
-	c6xdigio_write_data(dev, cmd | bits | (0 << 2), 0x00);
-	bits = (val >> 2) & 0x03;
-	c6xdigio_write_data(dev, cmd | bits | (1 << 2), 0x80);
-	bits = (val >> 4) & 0x03;
-	c6xdigio_write_data(dev, cmd | bits | (0 << 2), 0x00);
-	bits = (val >> 6) & 0x03;
-	c6xdigio_write_data(dev, cmd | bits | (1 << 2), 0x80);
-	bits = (val >> 8) & 0x03;
-	c6xdigio_write_data(dev, cmd | bits | (0 << 2), 0x00);
-
-	c6xdigio_write_data(dev, 0x00, 0x80);
-}
-
-static int c6xdigio_encoder_read(struct comedi_device *dev,
-				 unsigned int chan)
-{
-	unsigned int cmd = C6XDIGIO_DATA_ENCODER | C6XDIGIO_DATA_CHAN(chan);
-	unsigned int val = 0;
-	unsigned int bits;
-
-	c6xdigio_write_data(dev, cmd, 0x00);
-
-	c6xdigio_get_encoder_bits(dev, &bits, cmd | (1 << 2), 0x80);
-	val |= (bits << 0);
-
-	c6xdigio_get_encoder_bits(dev, &bits, cmd | (0 << 2), 0x00);
-	val |= (bits << 3);
-
-	c6xdigio_get_encoder_bits(dev, &bits, cmd | (1 << 2), 0x80);
-	val |= (bits << 6);
-
-	c6xdigio_get_encoder_bits(dev, &bits, cmd | (0 << 2), 0x00);
-	val |= (bits << 9);
-
-	c6xdigio_get_encoder_bits(dev, &bits, cmd | (1 << 2), 0x80);
-	val |= (bits << 12);
-
-	c6xdigio_get_encoder_bits(dev, &bits, cmd | (0 << 2), 0x00);
-	val |= (bits << 15);
-
-	c6xdigio_get_encoder_bits(dev, &bits, cmd | (1 << 2), 0x80);
-	val |= (bits << 18);
-
-	c6xdigio_get_encoder_bits(dev, &bits, cmd | (0 << 2), 0x00);
-	val |= (bits << 21);
-
-	c6xdigio_write_data(dev, 0x00, 0x80);
-
-	return val;
-}
-
-static int c6xdigio_pwm_insn_write(struct comedi_device *dev,
-				   struct comedi_subdevice *s,
-				   struct comedi_insn *insn,
-				   unsigned int *data)
-{
-	unsigned int chan = CR_CHAN(insn->chanspec);
-	unsigned int val = (s->state >> (16 * chan)) & 0xffff;
-	int i;
-
-	for (i = 0; i < insn->n; i++) {
-		val = data[i];
-		c6xdigio_pwm_write(dev, chan, val);
-	}
-
-	/*
-	 * There are only 2 PWM channels and they have a maxdata of 500.
-	 * Instead of allocating private data to save the values in for
-	 * readback this driver just packs the values for the two channels
-	 * in the s->state.
-	 */
-	s->state &= (0xffff << (16 * chan));
-	s->state |= (val << (16 * chan));
-
-	return insn->n;
-}
-
-static int c6xdigio_pwm_insn_read(struct comedi_device *dev,
-				  struct comedi_subdevice *s,
-				  struct comedi_insn *insn,
-				  unsigned int *data)
-{
-	unsigned int chan = CR_CHAN(insn->chanspec);
-	unsigned int val;
-	int i;
-
-	val = (s->state >> (16 * chan)) & 0xffff;
-
-	for (i = 0; i < insn->n; i++)
-		data[i] = val;
-
-	return insn->n;
-}
-
-static int c6xdigio_encoder_insn_read(struct comedi_device *dev,
-				      struct comedi_subdevice *s,
-				      struct comedi_insn *insn,
-				      unsigned int *data)
-{
-	unsigned int chan = CR_CHAN(insn->chanspec);
-	unsigned int val;
-	int i;
-
-	for (i = 0; i < insn->n; i++) {
-		val = c6xdigio_encoder_read(dev, chan);
-
-		/* munge two's complement value to offset binary */
-		data[i] = comedi_offset_munge(s, val);
-	}
-
-	return insn->n;
-}
-
-static void c6xdigio_init(struct comedi_device *dev)
-{
-	/* Initialize the PWM */
-	c6xdigio_write_data(dev, 0x70, 0x00);
-	c6xdigio_write_data(dev, 0x74, 0x80);
-	c6xdigio_write_data(dev, 0x70, 0x00);
-	c6xdigio_write_data(dev, 0x00, 0x80);
-
-	/* Reset the encoders */
-	c6xdigio_write_data(dev, 0x68, 0x00);
-	c6xdigio_write_data(dev, 0x6c, 0x80);
-	c6xdigio_write_data(dev, 0x68, 0x00);
-	c6xdigio_write_data(dev, 0x00, 0x80);
-}
-
-static const struct pnp_device_id c6xdigio_pnp_tbl[] = {
-	/* Standard LPT Printer Port */
-	{.id = "PNP0400", .driver_data = 0},
-	/* ECP Printer Port */
-	{.id = "PNP0401", .driver_data = 0},
-	{}
-};
-
-static struct pnp_driver c6xdigio_pnp_driver = {
-	.name = "c6xdigio",
-	.id_table = c6xdigio_pnp_tbl,
-};
-
-static int c6xdigio_attach(struct comedi_device *dev,
-			   struct comedi_devconfig *it)
-{
-	struct comedi_subdevice *s;
-	int ret;
-
-	ret = comedi_request_region(dev, it->options[0], 0x03);
-	if (ret)
-		return ret;
-
-	ret = comedi_alloc_subdevices(dev, 2);
-	if (ret)
-		return ret;
-
-	/*  Make sure that PnP ports get activated */
-	pnp_register_driver(&c6xdigio_pnp_driver);
-
-	s = &dev->subdevices[0];
-	/* pwm output subdevice */
-	s->type		= COMEDI_SUBD_PWM;
-	s->subdev_flags	= SDF_WRITABLE;
-	s->n_chan	= 2;
-	s->maxdata	= 500;
-	s->range_table	= &range_unknown;
-	s->insn_write	= c6xdigio_pwm_insn_write;
-	s->insn_read	= c6xdigio_pwm_insn_read;
-
-	s = &dev->subdevices[1];
-	/* encoder (counter) subdevice */
-	s->type		= COMEDI_SUBD_COUNTER;
-	s->subdev_flags	= SDF_READABLE | SDF_LSAMPL;
-	s->n_chan	= 2;
-	s->maxdata	= 0xffffff;
-	s->range_table	= &range_unknown;
-	s->insn_read	= c6xdigio_encoder_insn_read;
-
-	/*  I will call this init anyway but more than likely the DSP board */
-	/*  will not be connected when device driver is loaded. */
-	c6xdigio_init(dev);
-
-	return 0;
-}
-
-static void c6xdigio_detach(struct comedi_device *dev)
-{
-	comedi_legacy_detach(dev);
-	pnp_unregister_driver(&c6xdigio_pnp_driver);
-}
-
-static struct comedi_driver c6xdigio_driver = {
-	.driver_name	= "c6xdigio",
-	.module		= THIS_MODULE,
-	.attach		= c6xdigio_attach,
-	.detach		= c6xdigio_detach,
-};
-module_comedi_driver(c6xdigio_driver);
-
-MODULE_AUTHOR("Comedi https://www.comedi.org");
-MODULE_DESCRIPTION("Comedi driver for the C6x_DIGIO DSP daughter card");
-MODULE_LICENSE("GPL");