Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 267 insertions, 0 deletions

diff --git a/drivers/input/gameport/ns558.c b/drivers/input/gameport/ns558.c
new file mode 100644
index 0000000000..91a8cd346e
--- /dev/null
+++ b/drivers/input/gameport/ns558.c
@@ -0,0 +1,267 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (c) 1999-2001 Vojtech Pavlik
+ *  Copyright (c) 1999 Brian Gerst
+ */
+
+/*
+ * NS558 based standard IBM game port driver for Linux
+ */
+
+#include <asm/io.h>
+
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/gameport.h>
+#include <linux/slab.h>
+#include <linux/pnp.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION("Classic gameport (ISA/PnP) driver");
+MODULE_LICENSE("GPL");
+
+static int ns558_isa_portlist[] = { 0x201, 0x200, 0x202, 0x203, 0x204, 0x205, 0x207, 0x209,
+				    0x20b, 0x20c, 0x20e, 0x20f, 0x211, 0x219, 0x101, 0 };
+
+struct ns558 {
+	int type;
+	int io;
+	int size;
+	struct pnp_dev *dev;
+	struct gameport *gameport;
+	struct list_head node;
+};
+
+static LIST_HEAD(ns558_list);
+
+/*
+ * ns558_isa_probe() tries to find an isa gameport at the
+ * specified address, and also checks for mirrors.
+ * A joystick must be attached for this to work.
+ */
+
+static int ns558_isa_probe(int io)
+{
+	int i, j, b;
+	unsigned char c, u, v;
+	struct ns558 *ns558;
+	struct gameport *port;
+
+/*
+ * No one should be using this address.
+ */
+
+	if (!request_region(io, 1, "ns558-isa"))
+		return -EBUSY;
+
+/*
+ * We must not be able to write arbitrary values to the port.
+ * The lower two axis bits must be 1 after a write.
+ */
+
+	c = inb(io);
+	outb(~c & ~3, io);
+	if (~(u = v = inb(io)) & 3) {
+		outb(c, io);
+		release_region(io, 1);
+		return -ENODEV;
+	}
+/*
+ * After a trigger, there must be at least some bits changing.
+ */
+
+	for (i = 0; i < 1000; i++) v &= inb(io);
+
+	if (u == v) {
+		outb(c, io);
+		release_region(io, 1);
+		return -ENODEV;
+	}
+	msleep(3);
+/*
+ * After some time (4ms) the axes shouldn't change anymore.
+ */
+
+	u = inb(io);
+	for (i = 0; i < 1000; i++)
+		if ((u ^ inb(io)) & 0xf) {
+			outb(c, io);
+			release_region(io, 1);
+			return -ENODEV;
+		}
+/*
+ * And now find the number of mirrors of the port.
+ */
+
+	for (i = 1; i < 5; i++) {
+
+		release_region(io & (-1 << (i - 1)), (1 << (i - 1)));
+
+		if (!request_region(io & (-1 << i), (1 << i), "ns558-isa"))
+			break;				/* Don't disturb anyone */
+
+		outb(0xff, io & (-1 << i));
+		for (j = b = 0; j < 1000; j++)
+			if (inb(io & (-1 << i)) != inb((io & (-1 << i)) + (1 << i) - 1)) b++;
+		msleep(3);
+
+		if (b > 300) {				/* We allow 30% difference */
+			release_region(io & (-1 << i), (1 << i));
+			break;
+		}
+	}
+
+	i--;
+
+	if (i != 4) {
+		if (!request_region(io & (-1 << i), (1 << i), "ns558-isa"))
+			return -EBUSY;
+	}
+
+	ns558 = kzalloc(sizeof(struct ns558), GFP_KERNEL);
+	port = gameport_allocate_port();
+	if (!ns558 || !port) {
+		printk(KERN_ERR "ns558: Memory allocation failed.\n");
+		release_region(io & (-1 << i), (1 << i));
+		kfree(ns558);
+		gameport_free_port(port);
+		return -ENOMEM;
+	}
+
+	ns558->io = io;
+	ns558->size = 1 << i;
+	ns558->gameport = port;
+
+	port->io = io;
+	gameport_set_name(port, "NS558 ISA Gameport");
+	gameport_set_phys(port, "isa%04x/gameport0", io & (-1 << i));
+
+	gameport_register_port(port);
+
+	list_add(&ns558->node, &ns558_list);
+
+	return 0;
+}
+
+#ifdef CONFIG_PNP
+
+static const struct pnp_device_id pnp_devids[] = {
+	{ .id = "@P@0001", .driver_data = 0 }, /* ALS 100 */
+	{ .id = "@P@0020", .driver_data = 0 }, /* ALS 200 */
+	{ .id = "@P@1001", .driver_data = 0 }, /* ALS 100+ */
+	{ .id = "@P@2001", .driver_data = 0 }, /* ALS 120 */
+	{ .id = "ASB16fd", .driver_data = 0 }, /* AdLib NSC16 */
+	{ .id = "AZT3001", .driver_data = 0 }, /* AZT1008 */
+	{ .id = "CDC0001", .driver_data = 0 }, /* Opl3-SAx */
+	{ .id = "CSC0001", .driver_data = 0 }, /* CS4232 */
+	{ .id = "CSC000f", .driver_data = 0 }, /* CS4236 */
+	{ .id = "CSC0101", .driver_data = 0 }, /* CS4327 */
+	{ .id = "CTL7001", .driver_data = 0 }, /* SB16 */
+	{ .id = "CTL7002", .driver_data = 0 }, /* AWE64 */
+	{ .id = "CTL7005", .driver_data = 0 }, /* Vibra16 */
+	{ .id = "ENS2020", .driver_data = 0 }, /* SoundscapeVIVO */
+	{ .id = "ESS0001", .driver_data = 0 }, /* ES1869 */
+	{ .id = "ESS0005", .driver_data = 0 }, /* ES1878 */
+	{ .id = "ESS6880", .driver_data = 0 }, /* ES688 */
+	{ .id = "IBM0012", .driver_data = 0 }, /* CS4232 */
+	{ .id = "OPT0001", .driver_data = 0 }, /* OPTi Audio16 */
+	{ .id = "YMH0006", .driver_data = 0 }, /* Opl3-SA */
+	{ .id = "YMH0022", .driver_data = 0 }, /* Opl3-SAx */
+	{ .id = "PNPb02f", .driver_data = 0 }, /* Generic */
+	{ .id = "", },
+};
+
+MODULE_DEVICE_TABLE(pnp, pnp_devids);
+
+static int ns558_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
+{
+	int ioport, iolen;
+	struct ns558 *ns558;
+	struct gameport *port;
+
+	if (!pnp_port_valid(dev, 0)) {
+		printk(KERN_WARNING "ns558: No i/o ports on a gameport? Weird\n");
+		return -ENODEV;
+	}
+
+	ioport = pnp_port_start(dev, 0);
+	iolen = pnp_port_len(dev, 0);
+
+	if (!request_region(ioport, iolen, "ns558-pnp"))
+		return -EBUSY;
+
+	ns558 = kzalloc(sizeof(struct ns558), GFP_KERNEL);
+	port = gameport_allocate_port();
+	if (!ns558 || !port) {
+		printk(KERN_ERR "ns558: Memory allocation failed\n");
+		kfree(ns558);
+		gameport_free_port(port);
+		return -ENOMEM;
+	}
+
+	ns558->io = ioport;
+	ns558->size = iolen;
+	ns558->dev = dev;
+	ns558->gameport = port;
+
+	gameport_set_name(port, "NS558 PnP Gameport");
+	gameport_set_phys(port, "pnp%s/gameport0", dev_name(&dev->dev));
+	port->dev.parent = &dev->dev;
+	port->io = ioport;
+
+	gameport_register_port(port);
+
+	list_add_tail(&ns558->node, &ns558_list);
+	return 0;
+}
+
+static struct pnp_driver ns558_pnp_driver = {
+	.name		= "ns558",
+	.id_table	= pnp_devids,
+	.probe		= ns558_pnp_probe,
+};
+
+#else
+
+static struct pnp_driver ns558_pnp_driver;
+
+#endif
+
+static int __init ns558_init(void)
+{
+	int i = 0;
+	int error;
+
+	error = pnp_register_driver(&ns558_pnp_driver);
+	if (error && error != -ENODEV)	/* should be ENOSYS really */
+		return error;
+
+/*
+ * Probe ISA ports after PnP, so that PnP ports that are already
+ * enabled get detected as PnP. This may be suboptimal in multi-device
+ * configurations, but saves hassle with simple setups.
+ */
+
+	while (ns558_isa_portlist[i])
+		ns558_isa_probe(ns558_isa_portlist[i++]);
+
+	return list_empty(&ns558_list) && error ? -ENODEV : 0;
+}
+
+static void __exit ns558_exit(void)
+{
+	struct ns558 *ns558, *safe;
+
+	list_for_each_entry_safe(ns558, safe, &ns558_list, node) {
+		gameport_unregister_port(ns558->gameport);
+		release_region(ns558->io & ~(ns558->size - 1), ns558->size);
+		kfree(ns558);
+	}
+
+	pnp_unregister_driver(&ns558_pnp_driver);
+}
+
+module_init(ns558_init);
+module_exit(ns558_exit);