Loading...
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Acorn RiscPC mouse driver for Linux/ARM
4 *
5 * Copyright (c) 2000-2002 Vojtech Pavlik
6 * Copyright (C) 1996-2002 Russell King
7 */
8
9/*
10 *
11 * This handles the Acorn RiscPCs mouse. We basically have a couple of
12 * hardware registers that track the sensor count for the X-Y movement and
13 * another register holding the button state. On every VSYNC interrupt we read
14 * the complete state and then work out if something has changed.
15 */
16
17#include <linux/module.h>
18#include <linux/ptrace.h>
19#include <linux/interrupt.h>
20#include <linux/init.h>
21#include <linux/input.h>
22#include <linux/io.h>
23
24#include <mach/hardware.h>
25#include <asm/irq.h>
26#include <asm/hardware/iomd.h>
27
28MODULE_AUTHOR("Vojtech Pavlik, Russell King");
29MODULE_DESCRIPTION("Acorn RiscPC mouse driver");
30MODULE_LICENSE("GPL");
31
32static short rpcmouse_lastx, rpcmouse_lasty;
33static struct input_dev *rpcmouse_dev;
34
35static irqreturn_t rpcmouse_irq(int irq, void *dev_id)
36{
37 struct input_dev *dev = dev_id;
38 short x, y, dx, dy, b;
39
40 x = (short) iomd_readl(IOMD_MOUSEX);
41 y = (short) iomd_readl(IOMD_MOUSEY);
42 b = (short) (__raw_readl(IOMEM(0xe0310000)) ^ 0x70);
43
44 dx = x - rpcmouse_lastx;
45 dy = y - rpcmouse_lasty;
46
47 rpcmouse_lastx = x;
48 rpcmouse_lasty = y;
49
50 input_report_rel(dev, REL_X, dx);
51 input_report_rel(dev, REL_Y, -dy);
52
53 input_report_key(dev, BTN_LEFT, b & 0x40);
54 input_report_key(dev, BTN_MIDDLE, b & 0x20);
55 input_report_key(dev, BTN_RIGHT, b & 0x10);
56
57 input_sync(dev);
58
59 return IRQ_HANDLED;
60}
61
62
63static int __init rpcmouse_init(void)
64{
65 int err;
66
67 rpcmouse_dev = input_allocate_device();
68 if (!rpcmouse_dev)
69 return -ENOMEM;
70
71 rpcmouse_dev->name = "Acorn RiscPC Mouse";
72 rpcmouse_dev->phys = "rpcmouse/input0";
73 rpcmouse_dev->id.bustype = BUS_HOST;
74 rpcmouse_dev->id.vendor = 0x0005;
75 rpcmouse_dev->id.product = 0x0001;
76 rpcmouse_dev->id.version = 0x0100;
77
78 rpcmouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
79 rpcmouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
80 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
81 rpcmouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
82
83 rpcmouse_lastx = (short) iomd_readl(IOMD_MOUSEX);
84 rpcmouse_lasty = (short) iomd_readl(IOMD_MOUSEY);
85
86 if (request_irq(IRQ_VSYNCPULSE, rpcmouse_irq, IRQF_SHARED, "rpcmouse", rpcmouse_dev)) {
87 printk(KERN_ERR "rpcmouse: unable to allocate VSYNC interrupt\n");
88 err = -EBUSY;
89 goto err_free_dev;
90 }
91
92 err = input_register_device(rpcmouse_dev);
93 if (err)
94 goto err_free_irq;
95
96 return 0;
97
98 err_free_irq:
99 free_irq(IRQ_VSYNCPULSE, rpcmouse_dev);
100 err_free_dev:
101 input_free_device(rpcmouse_dev);
102
103 return err;
104}
105
106static void __exit rpcmouse_exit(void)
107{
108 free_irq(IRQ_VSYNCPULSE, rpcmouse_dev);
109 input_unregister_device(rpcmouse_dev);
110}
111
112module_init(rpcmouse_init);
113module_exit(rpcmouse_exit);
1/*
2 * Acorn RiscPC mouse driver for Linux/ARM
3 *
4 * Copyright (c) 2000-2002 Vojtech Pavlik
5 * Copyright (C) 1996-2002 Russell King
6 *
7 */
8
9/*
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
13 *
14 * This handles the Acorn RiscPCs mouse. We basically have a couple of
15 * hardware registers that track the sensor count for the X-Y movement and
16 * another register holding the button state. On every VSYNC interrupt we read
17 * the complete state and then work out if something has changed.
18 */
19
20#include <linux/module.h>
21#include <linux/ptrace.h>
22#include <linux/interrupt.h>
23#include <linux/init.h>
24#include <linux/input.h>
25#include <linux/io.h>
26
27#include <mach/hardware.h>
28#include <asm/irq.h>
29#include <asm/hardware/iomd.h>
30
31MODULE_AUTHOR("Vojtech Pavlik, Russell King");
32MODULE_DESCRIPTION("Acorn RiscPC mouse driver");
33MODULE_LICENSE("GPL");
34
35static short rpcmouse_lastx, rpcmouse_lasty;
36static struct input_dev *rpcmouse_dev;
37
38static irqreturn_t rpcmouse_irq(int irq, void *dev_id)
39{
40 struct input_dev *dev = dev_id;
41 short x, y, dx, dy, b;
42
43 x = (short) iomd_readl(IOMD_MOUSEX);
44 y = (short) iomd_readl(IOMD_MOUSEY);
45 b = (short) (__raw_readl(IOMEM(0xe0310000)) ^ 0x70);
46
47 dx = x - rpcmouse_lastx;
48 dy = y - rpcmouse_lasty;
49
50 rpcmouse_lastx = x;
51 rpcmouse_lasty = y;
52
53 input_report_rel(dev, REL_X, dx);
54 input_report_rel(dev, REL_Y, -dy);
55
56 input_report_key(dev, BTN_LEFT, b & 0x40);
57 input_report_key(dev, BTN_MIDDLE, b & 0x20);
58 input_report_key(dev, BTN_RIGHT, b & 0x10);
59
60 input_sync(dev);
61
62 return IRQ_HANDLED;
63}
64
65
66static int __init rpcmouse_init(void)
67{
68 int err;
69
70 rpcmouse_dev = input_allocate_device();
71 if (!rpcmouse_dev)
72 return -ENOMEM;
73
74 rpcmouse_dev->name = "Acorn RiscPC Mouse";
75 rpcmouse_dev->phys = "rpcmouse/input0";
76 rpcmouse_dev->id.bustype = BUS_HOST;
77 rpcmouse_dev->id.vendor = 0x0005;
78 rpcmouse_dev->id.product = 0x0001;
79 rpcmouse_dev->id.version = 0x0100;
80
81 rpcmouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
82 rpcmouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
83 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
84 rpcmouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
85
86 rpcmouse_lastx = (short) iomd_readl(IOMD_MOUSEX);
87 rpcmouse_lasty = (short) iomd_readl(IOMD_MOUSEY);
88
89 if (request_irq(IRQ_VSYNCPULSE, rpcmouse_irq, IRQF_SHARED, "rpcmouse", rpcmouse_dev)) {
90 printk(KERN_ERR "rpcmouse: unable to allocate VSYNC interrupt\n");
91 err = -EBUSY;
92 goto err_free_dev;
93 }
94
95 err = input_register_device(rpcmouse_dev);
96 if (err)
97 goto err_free_irq;
98
99 return 0;
100
101 err_free_irq:
102 free_irq(IRQ_VSYNCPULSE, rpcmouse_dev);
103 err_free_dev:
104 input_free_device(rpcmouse_dev);
105
106 return err;
107}
108
109static void __exit rpcmouse_exit(void)
110{
111 free_irq(IRQ_VSYNCPULSE, rpcmouse_dev);
112 input_unregister_device(rpcmouse_dev);
113}
114
115module_init(rpcmouse_init);
116module_exit(rpcmouse_exit);