1 files changed, 0 insertions, 424 deletions

diff --git a/drivers/staging/comedi/drivers/adv_pci1760.c b/drivers/staging/comedi/drivers/adv_pci1760.c
deleted file mode 100644
index 6de8ab97d346..000000000000
--- a/drivers/staging/comedi/drivers/adv_pci1760.c
+++ /dev/null
@@ -1,424 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * COMEDI driver for the Advantech PCI-1760
- * Copyright (C) 2015 H Hartley Sweeten <hsweeten@visionengravers.com>
- *
- * Based on the pci1760 support in the adv_pci_dio driver written by:
- *	Michal Dobes <dobes@tesnet.cz>
- *
- * COMEDI - Linux Control and Measurement Device Interface
- * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
- */
-
-/*
- * Driver: adv_pci1760
- * Description: Advantech PCI-1760 Relay & Isolated Digital Input Card
- * Devices: [Advantech] PCI-1760 (adv_pci1760)
- * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
- * Updated: Fri, 13 Nov 2015 12:34:00 -0700
- * Status: untested
- *
- * Configuration Options: not applicable, uses PCI auto config
- */
-
-#include <linux/module.h>
-
-#include "../comedi_pci.h"
-
-/*
- * PCI-1760 Register Map
- *
- * Outgoing Mailbox Bytes
- * OMB3: Not used (must be 0)
- * OMB2: The command code to the PCI-1760
- * OMB1: The hi byte of the parameter for the command in OMB2
- * OMB0: The lo byte of the parameter for the command in OMB2
- *
- * Incoming Mailbox Bytes
- * IMB3: The Isolated Digital Input status (updated every 100us)
- * IMB2: The current command (matches OMB2 when command is successful)
- * IMB1: The hi byte of the feedback data for the command in OMB2
- * IMB0: The lo byte of the feedback data for the command in OMB2
- *
- * Interrupt Control/Status
- * INTCSR3: Not used (must be 0)
- * INTCSR2: The interrupt status (read only)
- * INTCSR1: Interrupt enable/disable
- * INTCSR0: Not used (must be 0)
- */
-#define PCI1760_OMB_REG(x)		(0x0c + (x))
-#define PCI1760_IMB_REG(x)		(0x1c + (x))
-#define PCI1760_INTCSR_REG(x)		(0x38 + (x))
-#define PCI1760_INTCSR1_IRQ_ENA		BIT(5)
-#define PCI1760_INTCSR2_OMB_IRQ		BIT(0)
-#define PCI1760_INTCSR2_IMB_IRQ		BIT(1)
-#define PCI1760_INTCSR2_IRQ_STATUS	BIT(6)
-#define PCI1760_INTCSR2_IRQ_ASSERTED	BIT(7)
-
-/* PCI-1760 command codes */
-#define PCI1760_CMD_CLR_IMB2		0x00	/* Clears IMB2 */
-#define PCI1760_CMD_SET_DO		0x01	/* Set output state */
-#define PCI1760_CMD_GET_DO		0x02	/* Read output status */
-#define PCI1760_CMD_GET_STATUS		0x03	/* Read current status */
-#define PCI1760_CMD_GET_FW_VER		0x0e	/* Read firmware version */
-#define PCI1760_CMD_GET_HW_VER		0x0f	/* Read hardware version */
-#define PCI1760_CMD_SET_PWM_HI(x)	(0x10 + (x) * 2) /* Set "hi" period */
-#define PCI1760_CMD_SET_PWM_LO(x)	(0x11 + (x) * 2) /* Set "lo" period */
-#define PCI1760_CMD_SET_PWM_CNT(x)	(0x14 + (x)) /* Set burst count */
-#define PCI1760_CMD_ENA_PWM		0x1f	/* Enable PWM outputs */
-#define PCI1760_CMD_ENA_FILT		0x20	/* Enable input filter */
-#define PCI1760_CMD_ENA_PAT_MATCH	0x21	/* Enable input pattern match */
-#define PCI1760_CMD_SET_PAT_MATCH	0x22	/* Set input pattern match */
-#define PCI1760_CMD_ENA_RISE_EDGE	0x23	/* Enable input rising edge */
-#define PCI1760_CMD_ENA_FALL_EDGE	0x24	/* Enable input falling edge */
-#define PCI1760_CMD_ENA_CNT		0x28	/* Enable counter */
-#define PCI1760_CMD_RST_CNT		0x29	/* Reset counter */
-#define PCI1760_CMD_ENA_CNT_OFLOW	0x2a	/* Enable counter overflow */
-#define PCI1760_CMD_ENA_CNT_MATCH	0x2b	/* Enable counter match */
-#define PCI1760_CMD_SET_CNT_EDGE	0x2c	/* Set counter edge */
-#define PCI1760_CMD_GET_CNT		0x2f	/* Reads counter value */
-#define PCI1760_CMD_SET_HI_SAMP(x)	(0x30 + (x)) /* Set "hi" sample time */
-#define PCI1760_CMD_SET_LO_SAMP(x)	(0x38 + (x)) /* Set "lo" sample time */
-#define PCI1760_CMD_SET_CNT(x)		(0x40 + (x)) /* Set counter reset val */
-#define PCI1760_CMD_SET_CNT_MATCH(x)	(0x48 + (x)) /* Set counter match val */
-#define PCI1760_CMD_GET_INT_FLAGS	0x60	/* Read interrupt flags */
-#define PCI1760_CMD_GET_INT_FLAGS_MATCH	BIT(0)
-#define PCI1760_CMD_GET_INT_FLAGS_COS	BIT(1)
-#define PCI1760_CMD_GET_INT_FLAGS_OFLOW	BIT(2)
-#define PCI1760_CMD_GET_OS		0x61	/* Read edge change flags */
-#define PCI1760_CMD_GET_CNT_STATUS	0x62	/* Read counter oflow/match */
-
-#define PCI1760_CMD_TIMEOUT		250	/* 250 usec timeout */
-#define PCI1760_CMD_RETRIES		3	/* limit number of retries */
-
-#define PCI1760_PWM_TIMEBASE		100000	/* 1 unit = 100 usec */
-
-static int pci1760_send_cmd(struct comedi_device *dev,
-			    unsigned char cmd, unsigned short val)
-{
-	unsigned long timeout;
-
-	/* send the command and parameter */
-	outb(val & 0xff, dev->iobase + PCI1760_OMB_REG(0));
-	outb((val >> 8) & 0xff, dev->iobase + PCI1760_OMB_REG(1));
-	outb(cmd, dev->iobase + PCI1760_OMB_REG(2));
-	outb(0, dev->iobase + PCI1760_OMB_REG(3));
-
-	/* datasheet says to allow up to 250 usec for the command to complete */
-	timeout = jiffies + usecs_to_jiffies(PCI1760_CMD_TIMEOUT);
-	do {
-		if (inb(dev->iobase + PCI1760_IMB_REG(2)) == cmd) {
-			/* command success; return the feedback data */
-			return inb(dev->iobase + PCI1760_IMB_REG(0)) |
-			       (inb(dev->iobase + PCI1760_IMB_REG(1)) << 8);
-		}
-		cpu_relax();
-	} while (time_before(jiffies, timeout));
-
-	return -EBUSY;
-}
-
-static int pci1760_cmd(struct comedi_device *dev,
-		       unsigned char cmd, unsigned short val)
-{
-	int repeats;
-	int ret;
-
-	/* send PCI1760_CMD_CLR_IMB2 between identical commands */
-	if (inb(dev->iobase + PCI1760_IMB_REG(2)) == cmd) {
-		ret = pci1760_send_cmd(dev, PCI1760_CMD_CLR_IMB2, 0);
-		if (ret < 0) {
-			/* timeout? try it once more */
-			ret = pci1760_send_cmd(dev, PCI1760_CMD_CLR_IMB2, 0);
-			if (ret < 0)
-				return -ETIMEDOUT;
-		}
-	}
-
-	/* datasheet says to keep retrying the command */
-	for (repeats = 0; repeats < PCI1760_CMD_RETRIES; repeats++) {
-		ret = pci1760_send_cmd(dev, cmd, val);
-		if (ret >= 0)
-			return ret;
-	}
-
-	/* command failed! */
-	return -ETIMEDOUT;
-}
-
-static int pci1760_di_insn_bits(struct comedi_device *dev,
-				struct comedi_subdevice *s,
-				struct comedi_insn *insn,
-				unsigned int *data)
-{
-	data[1] = inb(dev->iobase + PCI1760_IMB_REG(3));
-
-	return insn->n;
-}
-
-static int pci1760_do_insn_bits(struct comedi_device *dev,
-				struct comedi_subdevice *s,
-				struct comedi_insn *insn,
-				unsigned int *data)
-{
-	int ret;
-
-	if (comedi_dio_update_state(s, data)) {
-		ret = pci1760_cmd(dev, PCI1760_CMD_SET_DO, s->state);
-		if (ret < 0)
-			return ret;
-	}
-
-	data[1] = s->state;
-
-	return insn->n;
-}
-
-static int pci1760_pwm_ns_to_div(unsigned int flags, unsigned int ns)
-{
-	unsigned int divisor;
-
-	switch (flags) {
-	case CMDF_ROUND_NEAREST:
-		divisor = DIV_ROUND_CLOSEST(ns, PCI1760_PWM_TIMEBASE);
-		break;
-	case CMDF_ROUND_UP:
-		divisor = DIV_ROUND_UP(ns, PCI1760_PWM_TIMEBASE);
-		break;
-	case CMDF_ROUND_DOWN:
-		divisor = ns / PCI1760_PWM_TIMEBASE;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	if (divisor < 1)
-		divisor = 1;
-	if (divisor > 0xffff)
-		divisor = 0xffff;
-
-	return divisor;
-}
-
-static int pci1760_pwm_enable(struct comedi_device *dev,
-			      unsigned int chan, bool enable)
-{
-	int ret;
-
-	ret = pci1760_cmd(dev, PCI1760_CMD_GET_STATUS, PCI1760_CMD_ENA_PWM);
-	if (ret < 0)
-		return ret;
-
-	if (enable)
-		ret |= BIT(chan);
-	else
-		ret &= ~BIT(chan);
-
-	return pci1760_cmd(dev, PCI1760_CMD_ENA_PWM, ret);
-}
-
-static int pci1760_pwm_insn_config(struct comedi_device *dev,
-				   struct comedi_subdevice *s,
-				   struct comedi_insn *insn,
-				   unsigned int *data)
-{
-	unsigned int chan = CR_CHAN(insn->chanspec);
-	int hi_div;
-	int lo_div;
-	int ret;
-
-	switch (data[0]) {
-	case INSN_CONFIG_ARM:
-		ret = pci1760_pwm_enable(dev, chan, false);
-		if (ret < 0)
-			return ret;
-
-		if (data[1] > 0xffff)
-			return -EINVAL;
-		ret = pci1760_cmd(dev, PCI1760_CMD_SET_PWM_CNT(chan), data[1]);
-		if (ret < 0)
-			return ret;
-
-		ret = pci1760_pwm_enable(dev, chan, true);
-		if (ret < 0)
-			return ret;
-		break;
-	case INSN_CONFIG_DISARM:
-		ret = pci1760_pwm_enable(dev, chan, false);
-		if (ret < 0)
-			return ret;
-		break;
-	case INSN_CONFIG_PWM_OUTPUT:
-		ret = pci1760_pwm_enable(dev, chan, false);
-		if (ret < 0)
-			return ret;
-
-		hi_div = pci1760_pwm_ns_to_div(data[1], data[2]);
-		lo_div = pci1760_pwm_ns_to_div(data[3], data[4]);
-		if (hi_div < 0 || lo_div < 0)
-			return -EINVAL;
-		if ((hi_div * PCI1760_PWM_TIMEBASE) != data[2] ||
-		    (lo_div * PCI1760_PWM_TIMEBASE) != data[4]) {
-			data[2] = hi_div * PCI1760_PWM_TIMEBASE;
-			data[4] = lo_div * PCI1760_PWM_TIMEBASE;
-			return -EAGAIN;
-		}
-		ret = pci1760_cmd(dev, PCI1760_CMD_SET_PWM_HI(chan), hi_div);
-		if (ret < 0)
-			return ret;
-		ret = pci1760_cmd(dev, PCI1760_CMD_SET_PWM_LO(chan), lo_div);
-		if (ret < 0)
-			return ret;
-		break;
-	case INSN_CONFIG_GET_PWM_OUTPUT:
-		hi_div = pci1760_cmd(dev, PCI1760_CMD_GET_STATUS,
-				     PCI1760_CMD_SET_PWM_HI(chan));
-		lo_div = pci1760_cmd(dev, PCI1760_CMD_GET_STATUS,
-				     PCI1760_CMD_SET_PWM_LO(chan));
-		if (hi_div < 0 || lo_div < 0)
-			return -ETIMEDOUT;
-
-		data[1] = hi_div * PCI1760_PWM_TIMEBASE;
-		data[2] = lo_div * PCI1760_PWM_TIMEBASE;
-		break;
-	case INSN_CONFIG_GET_PWM_STATUS:
-		ret = pci1760_cmd(dev, PCI1760_CMD_GET_STATUS,
-				  PCI1760_CMD_ENA_PWM);
-		if (ret < 0)
-			return ret;
-
-		data[1] = (ret & BIT(chan)) ? 1 : 0;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return insn->n;
-}
-
-static void pci1760_reset(struct comedi_device *dev)
-{
-	int i;
-
-	/* disable interrupts (intcsr2 is read-only) */
-	outb(0, dev->iobase + PCI1760_INTCSR_REG(0));
-	outb(0, dev->iobase + PCI1760_INTCSR_REG(1));
-	outb(0, dev->iobase + PCI1760_INTCSR_REG(3));
-
-	/* disable counters */
-	pci1760_cmd(dev, PCI1760_CMD_ENA_CNT, 0);
-
-	/* disable overflow interrupts */
-	pci1760_cmd(dev, PCI1760_CMD_ENA_CNT_OFLOW, 0);
-
-	/* disable match */
-	pci1760_cmd(dev, PCI1760_CMD_ENA_CNT_MATCH, 0);
-
-	/* set match and counter reset values */
-	for (i = 0; i < 8; i++) {
-		pci1760_cmd(dev, PCI1760_CMD_SET_CNT_MATCH(i), 0x8000);
-		pci1760_cmd(dev, PCI1760_CMD_SET_CNT(i), 0x0000);
-	}
-
-	/* reset counters to reset values */
-	pci1760_cmd(dev, PCI1760_CMD_RST_CNT, 0xff);
-
-	/* set counter count edges */
-	pci1760_cmd(dev, PCI1760_CMD_SET_CNT_EDGE, 0);
-
-	/* disable input filters */
-	pci1760_cmd(dev, PCI1760_CMD_ENA_FILT, 0);
-
-	/* disable pattern matching */
-	pci1760_cmd(dev, PCI1760_CMD_ENA_PAT_MATCH, 0);
-
-	/* set pattern match value */
-	pci1760_cmd(dev, PCI1760_CMD_SET_PAT_MATCH, 0);
-}
-
-static int pci1760_auto_attach(struct comedi_device *dev,
-			       unsigned long context)
-{
-	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
-	struct comedi_subdevice *s;
-	int ret;
-
-	ret = comedi_pci_enable(dev);
-	if (ret)
-		return ret;
-	dev->iobase = pci_resource_start(pcidev, 0);
-
-	pci1760_reset(dev);
-
-	ret = comedi_alloc_subdevices(dev, 4);
-	if (ret)
-		return ret;
-
-	/* Digital Input subdevice */
-	s = &dev->subdevices[0];
-	s->type		= COMEDI_SUBD_DI;
-	s->subdev_flags	= SDF_READABLE;
-	s->n_chan	= 8;
-	s->maxdata	= 1;
-	s->range_table	= &range_digital;
-	s->insn_bits	= pci1760_di_insn_bits;
-
-	/* Digital Output subdevice */
-	s = &dev->subdevices[1];
-	s->type		= COMEDI_SUBD_DO;
-	s->subdev_flags	= SDF_WRITABLE;
-	s->n_chan	= 8;
-	s->maxdata	= 1;
-	s->range_table	= &range_digital;
-	s->insn_bits	= pci1760_do_insn_bits;
-
-	/* get the current state of the outputs */
-	ret = pci1760_cmd(dev, PCI1760_CMD_GET_DO, 0);
-	if (ret < 0)
-		return ret;
-	s->state	= ret;
-
-	/* PWM subdevice */
-	s = &dev->subdevices[2];
-	s->type		= COMEDI_SUBD_PWM;
-	s->subdev_flags	= SDF_PWM_COUNTER;
-	s->n_chan	= 2;
-	s->insn_config	= pci1760_pwm_insn_config;
-
-	/* Counter subdevice */
-	s = &dev->subdevices[3];
-	s->type		= COMEDI_SUBD_UNUSED;
-
-	return 0;
-}
-
-static struct comedi_driver pci1760_driver = {
-	.driver_name	= "adv_pci1760",
-	.module		= THIS_MODULE,
-	.auto_attach	= pci1760_auto_attach,
-	.detach		= comedi_pci_detach,
-};
-
-static int pci1760_pci_probe(struct pci_dev *dev,
-			     const struct pci_device_id *id)
-{
-	return comedi_pci_auto_config(dev, &pci1760_driver, id->driver_data);
-}
-
-static const struct pci_device_id pci1760_pci_table[] = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1760) },
-	{ 0 }
-};
-MODULE_DEVICE_TABLE(pci, pci1760_pci_table);
-
-static struct pci_driver pci1760_pci_driver = {
-	.name		= "adv_pci1760",
-	.id_table	= pci1760_pci_table,
-	.probe		= pci1760_pci_probe,
-	.remove		= comedi_pci_auto_unconfig,
-};
-module_comedi_pci_driver(pci1760_driver, pci1760_pci_driver);
-
-MODULE_AUTHOR("Comedi https://www.comedi.org");
-MODULE_DESCRIPTION("Comedi driver for Advantech PCI-1760");
-MODULE_LICENSE("GPL");