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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// 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);