diff options
Diffstat (limited to 'drivers/input/joystick/warrior.c')
| -rw-r--r-- | drivers/input/joystick/warrior.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/drivers/input/joystick/warrior.c b/drivers/input/joystick/warrior.c new file mode 100644 index 000000000..f66bddf14 --- /dev/null +++ b/drivers/input/joystick/warrior.c @@ -0,0 +1,200 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 1999-2001 Vojtech Pavlik + */ + +/* + * Logitech WingMan Warrior joystick driver for Linux + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/input.h> +#include <linux/serio.h> + +#define DRIVER_DESC "Logitech WingMan Warrior joystick driver" + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Constants. + */ + +#define WARRIOR_MAX_LENGTH 16 +static char warrior_lengths[] = { 0, 4, 12, 3, 4, 4, 0, 0 }; + +/* + * Per-Warrior data. + */ + +struct warrior { + struct input_dev *dev; + int idx, len; + unsigned char data[WARRIOR_MAX_LENGTH]; + char phys[32]; +}; + +/* + * warrior_process_packet() decodes packets the driver receives from the + * Warrior. It updates the data accordingly. + */ + +static void warrior_process_packet(struct warrior *warrior) +{ + struct input_dev *dev = warrior->dev; + unsigned char *data = warrior->data; + + if (!warrior->idx) return; + + switch ((data[0] >> 4) & 7) { + case 1: /* Button data */ + input_report_key(dev, BTN_TRIGGER, data[3] & 1); + input_report_key(dev, BTN_THUMB, (data[3] >> 1) & 1); + input_report_key(dev, BTN_TOP, (data[3] >> 2) & 1); + input_report_key(dev, BTN_TOP2, (data[3] >> 3) & 1); + break; + case 3: /* XY-axis info->data */ + input_report_abs(dev, ABS_X, ((data[0] & 8) << 5) - (data[2] | ((data[0] & 4) << 5))); + input_report_abs(dev, ABS_Y, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7)); + break; + case 5: /* Throttle, spinner, hat info->data */ + input_report_abs(dev, ABS_THROTTLE, (data[1] | ((data[0] & 1) << 7)) - ((data[0] & 2) << 7)); + input_report_abs(dev, ABS_HAT0X, (data[3] & 2 ? 1 : 0) - (data[3] & 1 ? 1 : 0)); + input_report_abs(dev, ABS_HAT0Y, (data[3] & 8 ? 1 : 0) - (data[3] & 4 ? 1 : 0)); + input_report_rel(dev, REL_DIAL, (data[2] | ((data[0] & 4) << 5)) - ((data[0] & 8) << 5)); + break; + } + input_sync(dev); +} + +/* + * warrior_interrupt() is called by the low level driver when characters + * are ready for us. We then buffer them for further processing, or call the + * packet processing routine. + */ + +static irqreturn_t warrior_interrupt(struct serio *serio, + unsigned char data, unsigned int flags) +{ + struct warrior *warrior = serio_get_drvdata(serio); + + if (data & 0x80) { + if (warrior->idx) warrior_process_packet(warrior); + warrior->idx = 0; + warrior->len = warrior_lengths[(data >> 4) & 7]; + } + + if (warrior->idx < warrior->len) + warrior->data[warrior->idx++] = data; + + if (warrior->idx == warrior->len) { + if (warrior->idx) warrior_process_packet(warrior); + warrior->idx = 0; + warrior->len = 0; + } + return IRQ_HANDLED; +} + +/* + * warrior_disconnect() is the opposite of warrior_connect() + */ + +static void warrior_disconnect(struct serio *serio) +{ + struct warrior *warrior = serio_get_drvdata(serio); + + serio_close(serio); + serio_set_drvdata(serio, NULL); + input_unregister_device(warrior->dev); + kfree(warrior); +} + +/* + * warrior_connect() is the routine that is called when someone adds a + * new serio device. It looks for the Warrior, and if found, registers + * it as an input device. + */ + +static int warrior_connect(struct serio *serio, struct serio_driver *drv) +{ + struct warrior *warrior; + struct input_dev *input_dev; + int err = -ENOMEM; + + warrior = kzalloc(sizeof(struct warrior), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!warrior || !input_dev) + goto fail1; + + warrior->dev = input_dev; + snprintf(warrior->phys, sizeof(warrior->phys), "%s/input0", serio->phys); + + input_dev->name = "Logitech WingMan Warrior"; + input_dev->phys = warrior->phys; + input_dev->id.bustype = BUS_RS232; + input_dev->id.vendor = SERIO_WARRIOR; + input_dev->id.product = 0x0001; + input_dev->id.version = 0x0100; + input_dev->dev.parent = &serio->dev; + + input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) | + BIT_MASK(EV_ABS); + input_dev->keybit[BIT_WORD(BTN_TRIGGER)] = BIT_MASK(BTN_TRIGGER) | + BIT_MASK(BTN_THUMB) | BIT_MASK(BTN_TOP) | BIT_MASK(BTN_TOP2); + input_dev->relbit[0] = BIT_MASK(REL_DIAL); + input_set_abs_params(input_dev, ABS_X, -64, 64, 0, 8); + input_set_abs_params(input_dev, ABS_Y, -64, 64, 0, 8); + input_set_abs_params(input_dev, ABS_THROTTLE, -112, 112, 0, 0); + input_set_abs_params(input_dev, ABS_HAT0X, -1, 1, 0, 0); + input_set_abs_params(input_dev, ABS_HAT0Y, -1, 1, 0, 0); + + serio_set_drvdata(serio, warrior); + + err = serio_open(serio, drv); + if (err) + goto fail2; + + err = input_register_device(warrior->dev); + if (err) + goto fail3; + + return 0; + + fail3: serio_close(serio); + fail2: serio_set_drvdata(serio, NULL); + fail1: input_free_device(input_dev); + kfree(warrior); + return err; +} + +/* + * The serio driver structure. + */ + +static const struct serio_device_id warrior_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_WARRIOR, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, warrior_serio_ids); + +static struct serio_driver warrior_drv = { + .driver = { + .name = "warrior", + }, + .description = DRIVER_DESC, + .id_table = warrior_serio_ids, + .interrupt = warrior_interrupt, + .connect = warrior_connect, + .disconnect = warrior_disconnect, +}; + +module_serio_driver(warrior_drv); |