diff options
Diffstat (limited to 'drivers/input/joystick/amijoy.c')
| -rw-r--r-- | drivers/input/joystick/amijoy.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/input/joystick/amijoy.c b/drivers/input/joystick/amijoy.c new file mode 100644 index 000000000000..cf36ca9b92f3 --- /dev/null +++ b/drivers/input/joystick/amijoy.c @@ -0,0 +1,161 @@ +/* + * $Id: amijoy.c,v 1.13 2002/01/22 20:26:32 vojtech Exp $ + * + * Copyright (c) 1998-2001 Vojtech Pavlik + */ + +/* + * Driver for Amiga joysticks for Linux/m68k + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Should you need to contact me, the author, you can do so either by + * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: + * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic + */ + +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/interrupt.h> + +#include <asm/system.h> +#include <asm/amigahw.h> +#include <asm/amigaints.h> + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION("Driver for Amiga joysticks"); +MODULE_LICENSE("GPL"); + +static int amijoy[2] = { 0, 1 }; +module_param_array_named(map, amijoy, uint, NULL, 0); +MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)"); + +__obsolete_setup("amijoy="); + +static int amijoy_used[2] = { 0, 0 }; +static struct input_dev amijoy_dev[2]; +static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" }; + +static char *amijoy_name = "Amiga joystick"; + +static irqreturn_t amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp) +{ + int i, data = 0, button = 0; + + for (i = 0; i < 2; i++) + if (amijoy[i]) { + + switch (i) { + case 0: data = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break; + case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break; + } + + input_regs(amijoy_dev + i, fp); + + input_report_key(amijoy_dev + i, BTN_TRIGGER, button); + + input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1)); + data = ~(data ^ (data << 1)); + input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1)); + + input_sync(amijoy_dev + i); + } + return IRQ_HANDLED; +} + +static int amijoy_open(struct input_dev *dev) +{ + int *used = dev->private; + + if ((*used)++) + return 0; + + if (request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) { + (*used)--; + printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB); + return -EBUSY; + } + + return 0; +} + +static void amijoy_close(struct input_dev *dev) +{ + int *used = dev->private; + + if (!--(*used)) + free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt); +} + +static int __init amijoy_init(void) +{ + int i, j; + + for (i = 0; i < 2; i++) + if (amijoy[i]) { + if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2, + "amijoy [Denise]")) { + if (i == 1 && amijoy[0]) { + input_unregister_device(amijoy_dev); + release_mem_region(CUSTOM_PHYSADDR+10, 2); + } + return -EBUSY; + } + + amijoy_dev[i].open = amijoy_open; + amijoy_dev[i].close = amijoy_close; + amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); + amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y); + amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); + for (j = 0; j < 2; j++) { + amijoy_dev[i].absmin[ABS_X + j] = -1; + amijoy_dev[i].absmax[ABS_X + j] = 1; + } + + amijoy_dev[i].name = amijoy_name; + amijoy_dev[i].phys = amijoy_phys[i]; + amijoy_dev[i].id.bustype = BUS_AMIGA; + amijoy_dev[i].id.vendor = 0x0001; + amijoy_dev[i].id.product = 0x0003; + amijoy_dev[i].id.version = 0x0100; + + amijoy_dev[i].private = amijoy_used + i; + + input_register_device(amijoy_dev + i); + printk(KERN_INFO "input: %s at joy%ddat\n", amijoy_name, i); + } + return 0; +} + +static void __exit amijoy_exit(void) +{ + int i; + + for (i = 0; i < 2; i++) + if (amijoy[i]) { + input_unregister_device(amijoy_dev + i); + release_mem_region(CUSTOM_PHYSADDR+10+i*2, 2); + } +} + +module_init(amijoy_init); +module_exit(amijoy_exit); |