diff options
Diffstat (limited to 'drivers/input/mouse/inport.c')
| -rw-r--r-- | drivers/input/mouse/inport.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/drivers/input/mouse/inport.c b/drivers/input/mouse/inport.c new file mode 100644 index 00000000000..ca4e9688662 --- /dev/null +++ b/drivers/input/mouse/inport.c @@ -0,0 +1,196 @@ +/* + * $Id: inport.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $ + * + * Copyright (c) 1999-2001 Vojtech Pavlik + * + * Based on the work of: + * Teemu Rantanen Derrick Cole + * Peter Cervasio Christoph Niemann + * Philip Blundell Russell King + * Bob Harris + */ + +/* + * Inport (ATI XL and Microsoft) busmouse driver for Linux + */ + +/* + * 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/module.h> +#include <linux/moduleparam.h> +#include <linux/config.h> +#include <linux/ioport.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/input.h> + +#include <asm/io.h> +#include <asm/irq.h> + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION("Inport (ATI XL and Microsoft) busmouse driver"); +MODULE_LICENSE("GPL"); + +#define INPORT_BASE 0x23c +#define INPORT_EXTENT 4 + +#define INPORT_CONTROL_PORT INPORT_BASE + 0 +#define INPORT_DATA_PORT INPORT_BASE + 1 +#define INPORT_SIGNATURE_PORT INPORT_BASE + 2 + +#define INPORT_REG_BTNS 0x00 +#define INPORT_REG_X 0x01 +#define INPORT_REG_Y 0x02 +#define INPORT_REG_MODE 0x07 +#define INPORT_RESET 0x80 + +#ifdef CONFIG_INPUT_ATIXL +#define INPORT_NAME "ATI XL Mouse" +#define INPORT_VENDOR 0x0002 +#define INPORT_SPEED_30HZ 0x01 +#define INPORT_SPEED_50HZ 0x02 +#define INPORT_SPEED_100HZ 0x03 +#define INPORT_SPEED_200HZ 0x04 +#define INPORT_MODE_BASE INPORT_SPEED_100HZ +#define INPORT_MODE_IRQ 0x08 +#else +#define INPORT_NAME "Microsoft InPort Mouse" +#define INPORT_VENDOR 0x0001 +#define INPORT_MODE_BASE 0x10 +#define INPORT_MODE_IRQ 0x01 +#endif +#define INPORT_MODE_HOLD 0x20 + +#define INPORT_IRQ 5 + +static int inport_irq = INPORT_IRQ; +module_param_named(irq, inport_irq, uint, 0); +MODULE_PARM_DESC(irq, "IRQ number (5=default)"); + +__obsolete_setup("inport_irq="); + +static int inport_used; + +static irqreturn_t inport_interrupt(int irq, void *dev_id, struct pt_regs *regs); + +static int inport_open(struct input_dev *dev) +{ + if (!inport_used++) { + if (request_irq(inport_irq, inport_interrupt, 0, "inport", NULL)) + return -EBUSY; + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); + } + + return 0; +} + +static void inport_close(struct input_dev *dev) +{ + if (!--inport_used) { + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_BASE, INPORT_DATA_PORT); + free_irq(inport_irq, NULL); + } +} + +static struct input_dev inport_dev = { + .evbit = { BIT(EV_KEY) | BIT(EV_REL) }, + .keybit = { [LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT) }, + .relbit = { BIT(REL_X) | BIT(REL_Y) }, + .open = inport_open, + .close = inport_close, + .name = INPORT_NAME, + .phys = "isa023c/input0", + .id = { + .bustype = BUS_ISA, + .vendor = INPORT_VENDOR, + .product = 0x0001, + .version = 0x0100, + }, +}; + +static irqreturn_t inport_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + unsigned char buttons; + + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_HOLD | INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); + + input_regs(&inport_dev, regs); + + outb(INPORT_REG_X, INPORT_CONTROL_PORT); + input_report_rel(&inport_dev, REL_X, inb(INPORT_DATA_PORT)); + + outb(INPORT_REG_Y, INPORT_CONTROL_PORT); + input_report_rel(&inport_dev, REL_Y, inb(INPORT_DATA_PORT)); + + outb(INPORT_REG_BTNS, INPORT_CONTROL_PORT); + buttons = inb(INPORT_DATA_PORT); + + input_report_key(&inport_dev, BTN_MIDDLE, buttons & 1); + input_report_key(&inport_dev, BTN_LEFT, buttons & 2); + input_report_key(&inport_dev, BTN_RIGHT, buttons & 4); + + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_IRQ | INPORT_MODE_BASE, INPORT_DATA_PORT); + + input_sync(&inport_dev); + return IRQ_HANDLED; +} + +static int __init inport_init(void) +{ + unsigned char a,b,c; + + if (!request_region(INPORT_BASE, INPORT_EXTENT, "inport")) { + printk(KERN_ERR "inport.c: Can't allocate ports at %#x\n", INPORT_BASE); + return -EBUSY; + } + + a = inb(INPORT_SIGNATURE_PORT); + b = inb(INPORT_SIGNATURE_PORT); + c = inb(INPORT_SIGNATURE_PORT); + if (( a == b ) || ( a != c )) { + release_region(INPORT_BASE, INPORT_EXTENT); + printk(KERN_ERR "inport.c: Didn't find InPort mouse at %#x\n", INPORT_BASE); + return -ENODEV; + } + + outb(INPORT_RESET, INPORT_CONTROL_PORT); + outb(INPORT_REG_MODE, INPORT_CONTROL_PORT); + outb(INPORT_MODE_BASE, INPORT_DATA_PORT); + + input_register_device(&inport_dev); + + printk(KERN_INFO "input: " INPORT_NAME " at %#x irq %d\n", INPORT_BASE, inport_irq); + + return 0; +} + +static void __exit inport_exit(void) +{ + input_unregister_device(&inport_dev); + release_region(INPORT_BASE, INPORT_EXTENT); +} + +module_init(inport_init); +module_exit(inport_exit); |