diff options
Diffstat (limited to 'drivers/input/mouse/logibm.c')
| -rw-r--r-- | drivers/input/mouse/logibm.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/drivers/input/mouse/logibm.c b/drivers/input/mouse/logibm.c new file mode 100644 index 000000000000..77eb83e87f61 --- /dev/null +++ b/drivers/input/mouse/logibm.c @@ -0,0 +1,183 @@ +/* + * $Id: logibm.c,v 1.11 2001/09/25 10:12:07 vojtech Exp $ + * + * Copyright (c) 1999-2001 Vojtech Pavlik + * + * Based on the work of: + * James Banks Matthew Dillon + * David Giller Nathan Laredo + * Linus Torvalds Johan Myreen + * Cliff Matthews Philip Blundell + * Russell King + */ + +/* + * Logitech Bus Mouse 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/delay.h> +#include <linux/ioport.h> +#include <linux/init.h> +#include <linux/input.h> +#include <linux/interrupt.h> + +#include <asm/io.h> +#include <asm/irq.h> + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION("Logitech busmouse driver"); +MODULE_LICENSE("GPL"); + +#define LOGIBM_BASE 0x23c +#define LOGIBM_EXTENT 4 + +#define LOGIBM_DATA_PORT LOGIBM_BASE + 0 +#define LOGIBM_SIGNATURE_PORT LOGIBM_BASE + 1 +#define LOGIBM_CONTROL_PORT LOGIBM_BASE + 2 +#define LOGIBM_CONFIG_PORT LOGIBM_BASE + 3 + +#define LOGIBM_ENABLE_IRQ 0x00 +#define LOGIBM_DISABLE_IRQ 0x10 +#define LOGIBM_READ_X_LOW 0x80 +#define LOGIBM_READ_X_HIGH 0xa0 +#define LOGIBM_READ_Y_LOW 0xc0 +#define LOGIBM_READ_Y_HIGH 0xe0 + +#define LOGIBM_DEFAULT_MODE 0x90 +#define LOGIBM_CONFIG_BYTE 0x91 +#define LOGIBM_SIGNATURE_BYTE 0xa5 + +#define LOGIBM_IRQ 5 + +static int logibm_irq = LOGIBM_IRQ; +module_param_named(irq, logibm_irq, uint, 0); +MODULE_PARM_DESC(irq, "IRQ number (5=default)"); + +__obsolete_setup("logibm_irq="); + +static int logibm_used = 0; + +static irqreturn_t logibm_interrupt(int irq, void *dev_id, struct pt_regs *regs); + +static int logibm_open(struct input_dev *dev) +{ + if (logibm_used++) + return 0; + if (request_irq(logibm_irq, logibm_interrupt, 0, "logibm", NULL)) { + logibm_used--; + printk(KERN_ERR "logibm.c: Can't allocate irq %d\n", logibm_irq); + return -EBUSY; + } + outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT); + return 0; +} + +static void logibm_close(struct input_dev *dev) +{ + if (--logibm_used) + return; + outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT); + free_irq(logibm_irq, NULL); +} + +static struct input_dev logibm_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 = logibm_open, + .close = logibm_close, + .name = "Logitech bus mouse", + .phys = "isa023c/input0", + .id = { + .bustype = BUS_ISA, + .vendor = 0x0003, + .product = 0x0001, + .version = 0x0100, + }, +}; + +static irqreturn_t logibm_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + char dx, dy; + unsigned char buttons; + + outb(LOGIBM_READ_X_LOW, LOGIBM_CONTROL_PORT); + dx = (inb(LOGIBM_DATA_PORT) & 0xf); + outb(LOGIBM_READ_X_HIGH, LOGIBM_CONTROL_PORT); + dx |= (inb(LOGIBM_DATA_PORT) & 0xf) << 4; + outb(LOGIBM_READ_Y_LOW, LOGIBM_CONTROL_PORT); + dy = (inb(LOGIBM_DATA_PORT) & 0xf); + outb(LOGIBM_READ_Y_HIGH, LOGIBM_CONTROL_PORT); + buttons = inb(LOGIBM_DATA_PORT); + dy |= (buttons & 0xf) << 4; + buttons = ~buttons >> 5; + + input_regs(&logibm_dev, regs); + input_report_rel(&logibm_dev, REL_X, dx); + input_report_rel(&logibm_dev, REL_Y, dy); + input_report_key(&logibm_dev, BTN_RIGHT, buttons & 1); + input_report_key(&logibm_dev, BTN_MIDDLE, buttons & 2); + input_report_key(&logibm_dev, BTN_LEFT, buttons & 4); + input_sync(&logibm_dev); + + outb(LOGIBM_ENABLE_IRQ, LOGIBM_CONTROL_PORT); + return IRQ_HANDLED; +} + +static int __init logibm_init(void) +{ + if (!request_region(LOGIBM_BASE, LOGIBM_EXTENT, "logibm")) { + printk(KERN_ERR "logibm.c: Can't allocate ports at %#x\n", LOGIBM_BASE); + return -EBUSY; + } + + outb(LOGIBM_CONFIG_BYTE, LOGIBM_CONFIG_PORT); + outb(LOGIBM_SIGNATURE_BYTE, LOGIBM_SIGNATURE_PORT); + udelay(100); + + if (inb(LOGIBM_SIGNATURE_PORT) != LOGIBM_SIGNATURE_BYTE) { + release_region(LOGIBM_BASE, LOGIBM_EXTENT); + printk(KERN_ERR "logibm.c: Didn't find Logitech busmouse at %#x\n", LOGIBM_BASE); + return -ENODEV; + } + + outb(LOGIBM_DEFAULT_MODE, LOGIBM_CONFIG_PORT); + outb(LOGIBM_DISABLE_IRQ, LOGIBM_CONTROL_PORT); + + input_register_device(&logibm_dev); + + printk(KERN_INFO "input: Logitech bus mouse at %#x irq %d\n", LOGIBM_BASE, logibm_irq); + + return 0; +} + +static void __exit logibm_exit(void) +{ + input_unregister_device(&logibm_dev); + release_region(LOGIBM_BASE, LOGIBM_EXTENT); +} + +module_init(logibm_init); +module_exit(logibm_exit); |