From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/input/mouse/rpcmouse.c | 107 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 drivers/input/mouse/rpcmouse.c (limited to 'drivers/input/mouse/rpcmouse.c') diff --git a/drivers/input/mouse/rpcmouse.c b/drivers/input/mouse/rpcmouse.c new file mode 100644 index 00000000000..7280f68afce --- /dev/null +++ b/drivers/input/mouse/rpcmouse.c @@ -0,0 +1,107 @@ +/* + * Acorn RiscPC mouse driver for Linux/ARM + * + * Copyright (c) 2000-2002 Vojtech Pavlik + * Copyright (C) 1996-2002 Russell King + * + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This handles the Acorn RiscPCs mouse. We basically have a couple of + * hardware registers that track the sensor count for the X-Y movement and + * another register holding the button state. On every VSYNC interrupt we read + * the complete state and then work out if something has changed. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +MODULE_AUTHOR("Vojtech Pavlik, Russell King"); +MODULE_DESCRIPTION("Acorn RiscPC mouse driver"); +MODULE_LICENSE("GPL"); + +static short rpcmouse_lastx, rpcmouse_lasty; + +static struct input_dev rpcmouse_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) }, + .name = "Acorn RiscPC Mouse", + .phys = "rpcmouse/input0", + .id = { + .bustype = BUS_HOST, + .vendor = 0x0005, + .product = 0x0001, + .version = 0x0100, + }, +}; + +static irqreturn_t rpcmouse_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + struct input_dev *dev = dev_id; + short x, y, dx, dy, b; + + x = (short) iomd_readl(IOMD_MOUSEX); + y = (short) iomd_readl(IOMD_MOUSEY); + b = (short) (__raw_readl(0xe0310000) ^ 0x70); + + dx = x - rpcmouse_lastx; + dy = y - rpcmouse_lasty; + + rpcmouse_lastx = x; + rpcmouse_lasty = y; + + input_regs(dev, regs); + + input_report_rel(dev, REL_X, dx); + input_report_rel(dev, REL_Y, -dy); + + input_report_key(dev, BTN_LEFT, b & 0x40); + input_report_key(dev, BTN_MIDDLE, b & 0x20); + input_report_key(dev, BTN_RIGHT, b & 0x10); + + input_sync(dev); + + return IRQ_HANDLED; +} + +static int __init rpcmouse_init(void) +{ + init_input_dev(&rpcmouse_dev); + + rpcmouse_lastx = (short) iomd_readl(IOMD_MOUSEX); + rpcmouse_lasty = (short) iomd_readl(IOMD_MOUSEY); + + if (request_irq(IRQ_VSYNCPULSE, rpcmouse_irq, SA_SHIRQ, "rpcmouse", &rpcmouse_dev)) { + printk(KERN_ERR "rpcmouse: unable to allocate VSYNC interrupt\n"); + return -1; + } + + input_register_device(&rpcmouse_dev); + + printk(KERN_INFO "input: Acorn RiscPC mouse\n"); + + return 0; +} + +static void __exit rpcmouse_exit(void) +{ + input_unregister_device(&rpcmouse_dev); + free_irq(IRQ_VSYNCPULSE, &rpcmouse_dev); +} + +module_init(rpcmouse_init); +module_exit(rpcmouse_exit); -- cgit v1.2.3