1 files changed, 294 insertions, 0 deletions
diff --git a/drivers/input/joystick/interact.c b/drivers/input/joystick/interact.c
new file mode 100644
index 000000000..03a9f0829
--- /dev/null
+++ b/drivers/input/joystick/interact.c
@@ -0,0 +1,294 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (c) 2001 Vojtech Pavlik
+ *
+ *  Based on the work of:
+ *	Toby Deshane
+ */
+
+/*
+ * InterAct digital gamepad/joystick driver for Linux
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/gameport.h>
+#include <linux/input.h>
+#include <linux/jiffies.h>
+
+#define DRIVER_DESC	"InterAct digital joystick driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+#define INTERACT_MAX_START	600	/* 400 us */
+#define INTERACT_MAX_STROBE	60	/* 40 us */
+#define INTERACT_MAX_LENGTH	32	/* 32 bits */
+
+#define INTERACT_TYPE_HHFX	0	/* HammerHead/FX */
+#define INTERACT_TYPE_PP8D	1	/* ProPad 8 */
+
+struct interact {
+	struct gameport *gameport;
+	struct input_dev *dev;
+	int bads;
+	int reads;
+	unsigned char type;
+	unsigned char length;
+	char phys[32];
+};
+
+static short interact_abs_hhfx[] =
+	{ ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 };
+static short interact_abs_pp8d[] =
+	{ ABS_X, ABS_Y, -1 };
+
+static short interact_btn_hhfx[] =
+	{ BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 };
+static short interact_btn_pp8d[] =
+	{ BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 };
+
+struct interact_type {
+	int id;
+	short *abs;
+	short *btn;
+	char *name;
+	unsigned char length;
+	unsigned char b8;
+};
+
+static struct interact_type interact_type[] = {
+	{ 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX",    32, 4 },
+	{ 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 },
+	{ 0 }};
+
+/*
+ * interact_read_packet() reads and InterAct joystick data.
+ */
+
+static int interact_read_packet(struct gameport *gameport, int length, u32 *data)
+{
+	unsigned long flags;
+	unsigned char u, v;
+	unsigned int t, s;
+	int i;
+
+	i = 0;
+	data[0] = data[1] = data[2] = 0;
+	t = gameport_time(gameport, INTERACT_MAX_START);
+	s = gameport_time(gameport, INTERACT_MAX_STROBE);
+
+	local_irq_save(flags);
+	gameport_trigger(gameport);
+	v = gameport_read(gameport);
+
+	while (t > 0 && i < length) {
+		t--;
+		u = v; v = gameport_read(gameport);
+		if (v & ~u & 0x40) {
+			data[0] = (data[0] << 1) | ((v >> 4) & 1);
+			data[1] = (data[1] << 1) | ((v >> 5) & 1);
+			data[2] = (data[2] << 1) | ((v >> 7) & 1);
+			i++;
+			t = s;
+		}
+	}
+
+	local_irq_restore(flags);
+
+	return i;
+}
+
+/*
+ * interact_poll() reads and analyzes InterAct joystick data.
+ */
+
+static void interact_poll(struct gameport *gameport)
+{
+	struct interact *interact = gameport_get_drvdata(gameport);
+	struct input_dev *dev = interact->dev;
+	u32 data[3];
+	int i;
+
+	interact->reads++;
+
+	if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) {
+		interact->bads++;
+	} else {
+
+		for (i = 0; i < 3; i++)
+			data[i] <<= INTERACT_MAX_LENGTH - interact->length;
+
+		switch (interact->type) {
+
+			case INTERACT_TYPE_HHFX:
+
+				for (i = 0; i < 4; i++)
+					input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff);
+
+				for (i = 0; i < 2; i++)
+					input_report_abs(dev, ABS_HAT0Y - i,
+						((data[1] >> ((i << 1) + 17)) & 1)  - ((data[1] >> ((i << 1) + 16)) & 1));
+
+				for (i = 0; i < 8; i++)
+					input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1);
+
+				for (i = 0; i < 4; i++)
+					input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1);
+
+				break;
+
+			case INTERACT_TYPE_PP8D:
+
+				for (i = 0; i < 2; i++)
+					input_report_abs(dev, interact_abs_pp8d[i],
+						((data[0] >> ((i << 1) + 20)) & 1)  - ((data[0] >> ((i << 1) + 21)) & 1));
+
+				for (i = 0; i < 8; i++)
+					input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1);
+
+				break;
+		}
+	}
+
+	input_sync(dev);
+}
+
+/*
+ * interact_open() is a callback from the input open routine.
+ */
+
+static int interact_open(struct input_dev *dev)
+{
+	struct interact *interact = input_get_drvdata(dev);
+
+	gameport_start_polling(interact->gameport);
+	return 0;
+}
+
+/*
+ * interact_close() is a callback from the input close routine.
+ */
+
+static void interact_close(struct input_dev *dev)
+{
+	struct interact *interact = input_get_drvdata(dev);
+
+	gameport_stop_polling(interact->gameport);
+}
+
+/*
+ * interact_connect() probes for InterAct joysticks.
+ */
+
+static int interact_connect(struct gameport *gameport, struct gameport_driver *drv)
+{
+	struct interact *interact;
+	struct input_dev *input_dev;
+	__u32 data[3];
+	int i, t;
+	int err;
+
+	interact = kzalloc(sizeof(struct interact), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!interact || !input_dev) {
+		err = -ENOMEM;
+		goto fail1;
+	}
+
+	interact->gameport = gameport;
+	interact->dev = input_dev;
+
+	gameport_set_drvdata(gameport, interact);
+
+	err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
+	if (err)
+		goto fail1;
+
+	i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data);
+
+	if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) {
+		err = -ENODEV;
+		goto fail2;
+	}
+
+	for (i = 0; interact_type[i].length; i++)
+		if (interact_type[i].id == (data[2] >> 16))
+			break;
+
+	if (!interact_type[i].length) {
+		printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n",
+			gameport->phys, i, data[0], data[1], data[2]);
+		err = -ENODEV;
+		goto fail2;
+	}
+
+	gameport_set_poll_handler(gameport, interact_poll);
+	gameport_set_poll_interval(gameport, 20);
+
+	snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys);
+
+	interact->type = i;
+	interact->length = interact_type[i].length;
+
+	input_dev->name = interact_type[i].name;
+	input_dev->phys = interact->phys;
+	input_dev->id.bustype = BUS_GAMEPORT;
+	input_dev->id.vendor = GAMEPORT_ID_VENDOR_INTERACT;
+	input_dev->id.product = interact_type[i].id;
+	input_dev->id.version = 0x0100;
+	input_dev->dev.parent = &gameport->dev;
+
+	input_set_drvdata(input_dev, interact);
+
+	input_dev->open = interact_open;
+	input_dev->close = interact_close;
+
+	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+
+	for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) {
+		if (i < interact_type[interact->type].b8)
+			input_set_abs_params(input_dev, t, 0, 255, 0, 0);
+		else
+			input_set_abs_params(input_dev, t, -1, 1, 0, 0);
+	}
+
+	for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++)
+		__set_bit(t, input_dev->keybit);
+
+	err = input_register_device(interact->dev);
+	if (err)
+		goto fail2;
+
+	return 0;
+
+fail2:	gameport_close(gameport);
+fail1:  gameport_set_drvdata(gameport, NULL);
+	input_free_device(input_dev);
+	kfree(interact);
+	return err;
+}
+
+static void interact_disconnect(struct gameport *gameport)
+{
+	struct interact *interact = gameport_get_drvdata(gameport);
+
+	input_unregister_device(interact->dev);
+	gameport_close(gameport);
+	gameport_set_drvdata(gameport, NULL);
+	kfree(interact);
+}
+
+static struct gameport_driver interact_drv = {
+	.driver		= {
+		.name	= "interact",
+	},
+	.description	= DRIVER_DESC,
+	.connect	= interact_connect,
+	.disconnect	= interact_disconnect,
+};
+
+module_gameport_driver(interact_drv);