1 files changed, 396 insertions, 0 deletions
diff --git a/drivers/input/joystick/a3d.c b/drivers/input/joystick/a3d.c
new file mode 100644
index 000000000..fd1827baf
--- /dev/null
+++ b/drivers/input/joystick/a3d.c
@@ -0,0 +1,396 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Copyright (c) 1998-2001 Vojtech Pavlik
+ */
+
+/*
+ * FP-Gaming Assassin 3D joystick driver for Linux
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/gameport.h>
+#include <linux/input.h>
+#include <linux/jiffies.h>
+
+#define DRIVER_DESC	"FP-Gaming Assassin 3D joystick driver"
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+#define A3D_MAX_START		600	/* 600 us */
+#define A3D_MAX_STROBE		80	/* 80 us */
+#define A3D_MAX_LENGTH		40	/* 40*3 bits */
+
+#define A3D_MODE_A3D		1	/* Assassin 3D */
+#define A3D_MODE_PAN		2	/* Panther */
+#define A3D_MODE_OEM		3	/* Panther OEM version */
+#define A3D_MODE_PXL		4	/* Panther XL */
+
+static char *a3d_names[] = { NULL, "FP-Gaming Assassin 3D", "MadCatz Panther", "OEM Panther",
+			"MadCatz Panther XL", "MadCatz Panther XL w/ rudder" };
+
+struct a3d {
+	struct gameport *gameport;
+	struct gameport *adc;
+	struct input_dev *dev;
+	int axes[4];
+	int buttons;
+	int mode;
+	int length;
+	int reads;
+	int bads;
+	char phys[32];
+};
+
+/*
+ * a3d_read_packet() reads an Assassin 3D packet.
+ */
+
+static int a3d_read_packet(struct gameport *gameport, int length, char *data)
+{
+	unsigned long flags;
+	unsigned char u, v;
+	unsigned int t, s;
+	int i;
+
+	i = 0;
+	t = gameport_time(gameport, A3D_MAX_START);
+	s = gameport_time(gameport, A3D_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 & 0x10) {
+			data[i++] = v >> 5;
+			t = s;
+		}
+	}
+
+	local_irq_restore(flags);
+
+	return i;
+}
+
+/*
+ * a3d_csum() computes checksum of triplet packet
+ */
+
+static int a3d_csum(char *data, int count)
+{
+	int i, csum = 0;
+
+	for (i = 0; i < count - 2; i++)
+		csum += data[i];
+	return (csum & 0x3f) != ((data[count - 2] << 3) | data[count - 1]);
+}
+
+static void a3d_read(struct a3d *a3d, unsigned char *data)
+{
+	struct input_dev *dev = a3d->dev;
+
+	switch (a3d->mode) {
+
+		case A3D_MODE_A3D:
+		case A3D_MODE_OEM:
+		case A3D_MODE_PAN:
+
+			input_report_rel(dev, REL_X, ((data[5] << 6) | (data[6] << 3) | data[ 7]) - ((data[5] & 4) << 7));
+			input_report_rel(dev, REL_Y, ((data[8] << 6) | (data[9] << 3) | data[10]) - ((data[8] & 4) << 7));
+
+			input_report_key(dev, BTN_RIGHT,  data[2] & 1);
+			input_report_key(dev, BTN_LEFT,   data[3] & 2);
+			input_report_key(dev, BTN_MIDDLE, data[3] & 4);
+
+			input_sync(dev);
+
+			a3d->axes[0] = ((signed char)((data[11] << 6) | (data[12] << 3) | (data[13]))) + 128;
+			a3d->axes[1] = ((signed char)((data[14] << 6) | (data[15] << 3) | (data[16]))) + 128;
+			a3d->axes[2] = ((signed char)((data[17] << 6) | (data[18] << 3) | (data[19]))) + 128;
+			a3d->axes[3] = ((signed char)((data[20] << 6) | (data[21] << 3) | (data[22]))) + 128;
+
+			a3d->buttons = ((data[3] << 3) | data[4]) & 0xf;
+
+			break;
+
+		case A3D_MODE_PXL:
+
+			input_report_rel(dev, REL_X, ((data[ 9] << 6) | (data[10] << 3) | data[11]) - ((data[ 9] & 4) << 7));
+			input_report_rel(dev, REL_Y, ((data[12] << 6) | (data[13] << 3) | data[14]) - ((data[12] & 4) << 7));
+
+			input_report_key(dev, BTN_RIGHT,  data[2] & 1);
+			input_report_key(dev, BTN_LEFT,   data[3] & 2);
+			input_report_key(dev, BTN_MIDDLE, data[3] & 4);
+			input_report_key(dev, BTN_SIDE,   data[7] & 2);
+			input_report_key(dev, BTN_EXTRA,  data[7] & 4);
+
+			input_report_abs(dev, ABS_X,        ((signed char)((data[15] << 6) | (data[16] << 3) | (data[17]))) + 128);
+			input_report_abs(dev, ABS_Y,        ((signed char)((data[18] << 6) | (data[19] << 3) | (data[20]))) + 128);
+			input_report_abs(dev, ABS_RUDDER,   ((signed char)((data[21] << 6) | (data[22] << 3) | (data[23]))) + 128);
+			input_report_abs(dev, ABS_THROTTLE, ((signed char)((data[24] << 6) | (data[25] << 3) | (data[26]))) + 128);
+
+			input_report_abs(dev, ABS_HAT0X, ( data[5]       & 1) - ((data[5] >> 2) & 1));
+			input_report_abs(dev, ABS_HAT0Y, ((data[5] >> 1) & 1) - ((data[6] >> 2) & 1));
+			input_report_abs(dev, ABS_HAT1X, ((data[4] >> 1) & 1) - ( data[3]       & 1));
+			input_report_abs(dev, ABS_HAT1Y, ((data[4] >> 2) & 1) - ( data[4]       & 1));
+
+			input_report_key(dev, BTN_TRIGGER, data[8] & 1);
+			input_report_key(dev, BTN_THUMB,   data[8] & 2);
+			input_report_key(dev, BTN_TOP,     data[8] & 4);
+			input_report_key(dev, BTN_PINKIE,  data[7] & 1);
+
+			input_sync(dev);
+
+			break;
+	}
+}
+
+
+/*
+ * a3d_poll() reads and analyzes A3D joystick data.
+ */
+
+static void a3d_poll(struct gameport *gameport)
+{
+	struct a3d *a3d = gameport_get_drvdata(gameport);
+	unsigned char data[A3D_MAX_LENGTH];
+
+	a3d->reads++;
+	if (a3d_read_packet(a3d->gameport, a3d->length, data) != a3d->length ||
+	    data[0] != a3d->mode || a3d_csum(data, a3d->length))
+		a3d->bads++;
+	else
+		a3d_read(a3d, data);
+}
+
+/*
+ * a3d_adc_cooked_read() copies the acis and button data to the
+ * callers arrays. It could do the read itself, but the caller could
+ * call this more than 50 times a second, which would use too much CPU.
+ */
+
+static int a3d_adc_cooked_read(struct gameport *gameport, int *axes, int *buttons)
+{
+	struct a3d *a3d = gameport->port_data;
+	int i;
+
+	for (i = 0; i < 4; i++)
+		axes[i] = (a3d->axes[i] < 254) ? a3d->axes[i] : -1;
+	*buttons = a3d->buttons;
+	return 0;
+}
+
+/*
+ * a3d_adc_open() is the gameport open routine. It refuses to serve
+ * any but cooked data.
+ */
+
+static int a3d_adc_open(struct gameport *gameport, int mode)
+{
+	struct a3d *a3d = gameport->port_data;
+
+	if (mode != GAMEPORT_MODE_COOKED)
+		return -1;
+
+	gameport_start_polling(a3d->gameport);
+	return 0;
+}
+
+/*
+ * a3d_adc_close() is a callback from the input close routine.
+ */
+
+static void a3d_adc_close(struct gameport *gameport)
+{
+	struct a3d *a3d = gameport->port_data;
+
+	gameport_stop_polling(a3d->gameport);
+}
+
+/*
+ * a3d_open() is a callback from the input open routine.
+ */
+
+static int a3d_open(struct input_dev *dev)
+{
+	struct a3d *a3d = input_get_drvdata(dev);
+
+	gameport_start_polling(a3d->gameport);
+	return 0;
+}
+
+/*
+ * a3d_close() is a callback from the input close routine.
+ */
+
+static void a3d_close(struct input_dev *dev)
+{
+	struct a3d *a3d = input_get_drvdata(dev);
+
+	gameport_stop_polling(a3d->gameport);
+}
+
+/*
+ * a3d_connect() probes for A3D joysticks.
+ */
+
+static int a3d_connect(struct gameport *gameport, struct gameport_driver *drv)
+{
+	struct a3d *a3d;
+	struct input_dev *input_dev;
+	struct gameport *adc;
+	unsigned char data[A3D_MAX_LENGTH];
+	int i;
+	int err;
+
+	a3d = kzalloc(sizeof(struct a3d), GFP_KERNEL);
+	input_dev = input_allocate_device();
+	if (!a3d || !input_dev) {
+		err = -ENOMEM;
+		goto fail1;
+	}
+
+	a3d->dev = input_dev;
+	a3d->gameport = gameport;
+
+	gameport_set_drvdata(gameport, a3d);
+
+	err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
+	if (err)
+		goto fail1;
+
+	i = a3d_read_packet(gameport, A3D_MAX_LENGTH, data);
+
+	if (!i || a3d_csum(data, i)) {
+		err = -ENODEV;
+		goto fail2;
+	}
+
+	a3d->mode = data[0];
+
+	if (!a3d->mode || a3d->mode > 5) {
+		printk(KERN_WARNING "a3d.c: Unknown A3D device detected "
+			"(%s, id=%d), contact <vojtech@ucw.cz>\n", gameport->phys, a3d->mode);
+		err = -ENODEV;
+		goto fail2;
+	}
+
+	gameport_set_poll_handler(gameport, a3d_poll);
+	gameport_set_poll_interval(gameport, 20);
+
+	snprintf(a3d->phys, sizeof(a3d->phys), "%s/input0", gameport->phys);
+
+	input_dev->name = a3d_names[a3d->mode];
+	input_dev->phys = a3d->phys;
+	input_dev->id.bustype = BUS_GAMEPORT;
+	input_dev->id.vendor = GAMEPORT_ID_VENDOR_MADCATZ;
+	input_dev->id.product = a3d->mode;
+	input_dev->id.version = 0x0100;
+	input_dev->dev.parent = &gameport->dev;
+	input_dev->open = a3d_open;
+	input_dev->close = a3d_close;
+
+	input_set_drvdata(input_dev, a3d);
+
+	if (a3d->mode == A3D_MODE_PXL) {
+
+		int axes[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER };
+
+		a3d->length = 33;
+
+		input_dev->evbit[0] |= BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY) |
+			BIT_MASK(EV_REL);
+		input_dev->relbit[0] |= BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+		input_dev->absbit[0] |= BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
+			BIT_MASK(ABS_THROTTLE) | BIT_MASK(ABS_RUDDER) |
+			BIT_MASK(ABS_HAT0X) | BIT_MASK(ABS_HAT0Y) |
+			BIT_MASK(ABS_HAT1X) | BIT_MASK(ABS_HAT1Y);
+		input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_RIGHT) |
+			BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) |
+			BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);
+		input_dev->keybit[BIT_WORD(BTN_JOYSTICK)] |=
+			BIT_MASK(BTN_TRIGGER) | BIT_MASK(BTN_THUMB) |
+			BIT_MASK(BTN_TOP) | BIT_MASK(BTN_PINKIE);
+
+		a3d_read(a3d, data);
+
+		for (i = 0; i < 4; i++) {
+			if (i < 2)
+				input_set_abs_params(input_dev, axes[i],
+					48, input_abs_get_val(input_dev, axes[i]) * 2 - 48, 0, 8);
+			else
+				input_set_abs_params(input_dev, axes[i], 2, 253, 0, 0);
+			input_set_abs_params(input_dev, ABS_HAT0X + i, -1, 1, 0, 0);
+		}
+
+	} else {
+		a3d->length = 29;
+
+		input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+		input_dev->relbit[0] |= BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+		input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_RIGHT) |
+			BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE);
+
+		a3d_read(a3d, data);
+
+		if (!(a3d->adc = adc = gameport_allocate_port()))
+			printk(KERN_ERR "a3d: Not enough memory for ADC port\n");
+		else {
+			adc->port_data = a3d;
+			adc->open = a3d_adc_open;
+			adc->close = a3d_adc_close;
+			adc->cooked_read = a3d_adc_cooked_read;
+			adc->fuzz = 1;
+
+			gameport_set_name(adc, a3d_names[a3d->mode]);
+			gameport_set_phys(adc, "%s/gameport0", gameport->phys);
+			adc->dev.parent = &gameport->dev;
+
+			gameport_register_port(adc);
+		}
+	}
+
+	err = input_register_device(a3d->dev);
+	if (err)
+		goto fail3;
+
+	return 0;
+
+ fail3:	if (a3d->adc)
+		gameport_unregister_port(a3d->adc);
+ fail2:	gameport_close(gameport);
+ fail1:	gameport_set_drvdata(gameport, NULL);
+	input_free_device(input_dev);
+	kfree(a3d);
+	return err;
+}
+
+static void a3d_disconnect(struct gameport *gameport)
+{
+	struct a3d *a3d = gameport_get_drvdata(gameport);
+
+	input_unregister_device(a3d->dev);
+	if (a3d->adc)
+		gameport_unregister_port(a3d->adc);
+	gameport_close(gameport);
+	gameport_set_drvdata(gameport, NULL);
+	kfree(a3d);
+}
+
+static struct gameport_driver a3d_drv = {
+	.driver		= {
+		.name	= "adc",
+		.owner	= THIS_MODULE,
+	},
+	.description	= DRIVER_DESC,
+	.connect	= a3d_connect,
+	.disconnect	= a3d_disconnect,
+};
+
+module_gameport_driver(a3d_drv);