1 files changed, 0 insertions, 359 deletions
diff --git a/drivers/char/pcmcia/scr24x_cs.c b/drivers/char/pcmcia/scr24x_cs.c
deleted file mode 100644
index 870781f5a08c..000000000000
--- a/drivers/char/pcmcia/scr24x_cs.c
+++ /dev/null
@@ -1,359 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * SCR24x PCMCIA Smart Card Reader Driver
- *
- * Copyright (C) 2005-2006 TL Sudheendran
- * Copyright (C) 2016 Lubomir Rintel
- *
- * Derived from "scr24x_v4.2.6_Release.tar.gz" driver by TL Sudheendran.
- */
-
-#include <linux/device.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/cdev.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/io.h>
-#include <linux/uaccess.h>
-
-#include <pcmcia/cistpl.h>
-#include <pcmcia/ds.h>
-
-#define CCID_HEADER_SIZE	10
-#define CCID_LENGTH_OFFSET	1
-#define CCID_MAX_LEN		271
-
-#define SCR24X_DATA(n)		(1 + n)
-#define SCR24X_CMD_STATUS	7
-#define CMD_START		0x40
-#define CMD_WRITE_BYTE		0x41
-#define CMD_READ_BYTE		0x42
-#define STATUS_BUSY		0x80
-
-struct scr24x_dev {
-	struct device *dev;
-	struct cdev c_dev;
-	unsigned char buf[CCID_MAX_LEN];
-	int devno;
-	struct mutex lock;
-	struct kref refcnt;
-	u8 __iomem *regs;
-};
-
-#define SCR24X_DEVS 8
-static DECLARE_BITMAP(scr24x_minors, SCR24X_DEVS);
-
-static struct class *scr24x_class;
-static dev_t scr24x_devt;
-
-static void scr24x_delete(struct kref *kref)
-{
-	struct scr24x_dev *dev = container_of(kref, struct scr24x_dev,
-								refcnt);
-
-	kfree(dev);
-}
-
-static int scr24x_wait_ready(struct scr24x_dev *dev)
-{
-	u_char status;
-	int timeout = 100;
-
-	do {
-		status = ioread8(dev->regs + SCR24X_CMD_STATUS);
-		if (!(status & STATUS_BUSY))
-			return 0;
-
-		msleep(20);
-	} while (--timeout);
-
-	return -EIO;
-}
-
-static int scr24x_open(struct inode *inode, struct file *filp)
-{
-	struct scr24x_dev *dev = container_of(inode->i_cdev,
-				struct scr24x_dev, c_dev);
-
-	kref_get(&dev->refcnt);
-	filp->private_data = dev;
-
-	return stream_open(inode, filp);
-}
-
-static int scr24x_release(struct inode *inode, struct file *filp)
-{
-	struct scr24x_dev *dev = filp->private_data;
-
-	/* We must not take the dev->lock here as scr24x_delete()
-	 * might be called to remove the dev structure altogether.
-	 * We don't need the lock anyway, since after the reference
-	 * acquired in probe() is released in remove() the chrdev
-	 * is already unregistered and noone can possibly acquire
-	 * a reference via open() anymore. */
-	kref_put(&dev->refcnt, scr24x_delete);
-	return 0;
-}
-
-static int read_chunk(struct scr24x_dev *dev, size_t offset, size_t limit)
-{
-	size_t i, y;
-	int ret;
-
-	for (i = offset; i < limit; i += 5) {
-		iowrite8(CMD_READ_BYTE, dev->regs + SCR24X_CMD_STATUS);
-		ret = scr24x_wait_ready(dev);
-		if (ret < 0)
-			return ret;
-
-		for (y = 0; y < 5 && i + y < limit; y++)
-			dev->buf[i + y] = ioread8(dev->regs + SCR24X_DATA(y));
-	}
-
-	return 0;
-}
-
-static ssize_t scr24x_read(struct file *filp, char __user *buf, size_t count,
-								loff_t *ppos)
-{
-	struct scr24x_dev *dev = filp->private_data;
-	int ret;
-	int len;
-
-	if (count < CCID_HEADER_SIZE)
-		return -EINVAL;
-
-	if (mutex_lock_interruptible(&dev->lock))
-		return -ERESTARTSYS;
-
-	if (!dev->dev) {
-		ret = -ENODEV;
-		goto out;
-	}
-
-	ret = scr24x_wait_ready(dev);
-	if (ret < 0)
-		goto out;
-	len = CCID_HEADER_SIZE;
-	ret = read_chunk(dev, 0, len);
-	if (ret < 0)
-		goto out;
-
-	len += le32_to_cpu(*(__le32 *)(&dev->buf[CCID_LENGTH_OFFSET]));
-	if (len > sizeof(dev->buf)) {
-		ret = -EIO;
-		goto out;
-	}
-	ret = read_chunk(dev, CCID_HEADER_SIZE, len);
-	if (ret < 0)
-		goto out;
-
-	if (len < count)
-		count = len;
-
-	if (copy_to_user(buf, dev->buf, count)) {
-		ret = -EFAULT;
-		goto out;
-	}
-
-	ret = count;
-out:
-	mutex_unlock(&dev->lock);
-	return ret;
-}
-
-static ssize_t scr24x_write(struct file *filp, const char __user *buf,
-					size_t count, loff_t *ppos)
-{
-	struct scr24x_dev *dev = filp->private_data;
-	size_t i, y;
-	int ret;
-
-	if (mutex_lock_interruptible(&dev->lock))
-		return -ERESTARTSYS;
-
-	if (!dev->dev) {
-		ret = -ENODEV;
-		goto out;
-	}
-
-	if (count > sizeof(dev->buf)) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	if (copy_from_user(dev->buf, buf, count)) {
-		ret = -EFAULT;
-		goto out;
-	}
-
-	ret = scr24x_wait_ready(dev);
-	if (ret < 0)
-		goto out;
-
-	iowrite8(CMD_START, dev->regs + SCR24X_CMD_STATUS);
-	ret = scr24x_wait_ready(dev);
-	if (ret < 0)
-		goto out;
-
-	for (i = 0; i < count; i += 5) {
-		for (y = 0; y < 5 && i + y < count; y++)
-			iowrite8(dev->buf[i + y], dev->regs + SCR24X_DATA(y));
-
-		iowrite8(CMD_WRITE_BYTE, dev->regs + SCR24X_CMD_STATUS);
-		ret = scr24x_wait_ready(dev);
-		if (ret < 0)
-			goto out;
-	}
-
-	ret = count;
-out:
-	mutex_unlock(&dev->lock);
-	return ret;
-}
-
-static const struct file_operations scr24x_fops = {
-	.owner		= THIS_MODULE,
-	.read		= scr24x_read,
-	.write		= scr24x_write,
-	.open		= scr24x_open,
-	.release	= scr24x_release,
-	.llseek		= no_llseek,
-};
-
-static int scr24x_config_check(struct pcmcia_device *link, void *priv_data)
-{
-	if (resource_size(link->resource[PCMCIA_IOPORT_0]) != 0x11)
-		return -ENODEV;
-	return pcmcia_request_io(link);
-}
-
-static int scr24x_probe(struct pcmcia_device *link)
-{
-	struct scr24x_dev *dev;
-	int ret;
-
-	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-	if (!dev)
-		return -ENOMEM;
-
-	dev->devno = find_first_zero_bit(scr24x_minors, SCR24X_DEVS);
-	if (dev->devno >= SCR24X_DEVS) {
-		ret = -EBUSY;
-		goto err;
-	}
-
-	mutex_init(&dev->lock);
-	kref_init(&dev->refcnt);
-
-	link->priv = dev;
-	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
-
-	ret = pcmcia_loop_config(link, scr24x_config_check, NULL);
-	if (ret < 0)
-		goto err;
-
-	dev->dev = &link->dev;
-	dev->regs = devm_ioport_map(&link->dev,
-				link->resource[PCMCIA_IOPORT_0]->start,
-				resource_size(link->resource[PCMCIA_IOPORT_0]));
-	if (!dev->regs) {
-		ret = -EIO;
-		goto err;
-	}
-
-	cdev_init(&dev->c_dev, &scr24x_fops);
-	dev->c_dev.owner = THIS_MODULE;
-	ret = cdev_add(&dev->c_dev, MKDEV(MAJOR(scr24x_devt), dev->devno), 1);
-	if (ret < 0)
-		goto err;
-
-	ret = pcmcia_enable_device(link);
-	if (ret < 0) {
-		pcmcia_disable_device(link);
-		goto err;
-	}
-
-	device_create(scr24x_class, NULL, MKDEV(MAJOR(scr24x_devt), dev->devno),
-		      NULL, "scr24x%d", dev->devno);
-
-	dev_info(&link->dev, "SCR24x Chip Card Interface\n");
-	return 0;
-
-err:
-	if (dev->devno < SCR24X_DEVS)
-		clear_bit(dev->devno, scr24x_minors);
-	kfree (dev);
-	return ret;
-}
-
-static void scr24x_remove(struct pcmcia_device *link)
-{
-	struct scr24x_dev *dev = (struct scr24x_dev *)link->priv;
-
-	device_destroy(scr24x_class, MKDEV(MAJOR(scr24x_devt), dev->devno));
-	mutex_lock(&dev->lock);
-	pcmcia_disable_device(link);
-	cdev_del(&dev->c_dev);
-	clear_bit(dev->devno, scr24x_minors);
-	dev->dev = NULL;
-	mutex_unlock(&dev->lock);
-
-	kref_put(&dev->refcnt, scr24x_delete);
-}
-
-static const struct pcmcia_device_id scr24x_ids[] = {
-	PCMCIA_DEVICE_PROD_ID12("HP", "PC Card Smart Card Reader",
-					0x53cb94f9, 0xbfdf89a5),
-	PCMCIA_DEVICE_PROD_ID1("SCR241 PCMCIA", 0x6271efa3),
-	PCMCIA_DEVICE_PROD_ID1("SCR243 PCMCIA", 0x2054e8de),
-	PCMCIA_DEVICE_PROD_ID1("SCR24x PCMCIA", 0x54a33665),
-	PCMCIA_DEVICE_NULL
-};
-MODULE_DEVICE_TABLE(pcmcia, scr24x_ids);
-
-static struct pcmcia_driver scr24x_driver = {
-	.owner		= THIS_MODULE,
-	.name		= "scr24x_cs",
-	.probe		= scr24x_probe,
-	.remove		= scr24x_remove,
-	.id_table	= scr24x_ids,
-};
-
-static int __init scr24x_init(void)
-{
-	int ret;
-
-	scr24x_class = class_create("scr24x");
-	if (IS_ERR(scr24x_class))
-		return PTR_ERR(scr24x_class);
-
-	ret = alloc_chrdev_region(&scr24x_devt, 0, SCR24X_DEVS, "scr24x");
-	if (ret < 0)  {
-		class_destroy(scr24x_class);
-		return ret;
-	}
-
-	ret = pcmcia_register_driver(&scr24x_driver);
-	if (ret < 0) {
-		unregister_chrdev_region(scr24x_devt, SCR24X_DEVS);
-		class_destroy(scr24x_class);
-	}
-
-	return ret;
-}
-
-static void __exit scr24x_exit(void)
-{
-	pcmcia_unregister_driver(&scr24x_driver);
-	unregister_chrdev_region(scr24x_devt, SCR24X_DEVS);
-	class_destroy(scr24x_class);
-}
-
-module_init(scr24x_init);
-module_exit(scr24x_exit);
-
-MODULE_AUTHOR("Lubomir Rintel");
-MODULE_DESCRIPTION("SCR24x PCMCIA Smart Card Reader Driver");
-MODULE_LICENSE("GPL");