Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Input: mk712 - remove driver
This touchscreen controller was used om Gateway AOL Connected Touchpad
released in 2000 and, according to Wikipedia, removed from the market
in October 2001 due to slow sales.
It looks like it can still be bought on eBay for $1000 but I really
doubt anyone will actually use it.
Remove the driver.
Link: https://patch.msgid.link/20240808172733.1194442-5-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
-220
-12
drivers/input/touchscreen/Kconfig
-12
drivers/input/touchscreen/Kconfig
···
723
723
To compile this driver as a module, choose M here: the
724
724
module will be called inexio.
725
725
726
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config TOUCHSCREEN_MK712
727
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tristate "ICS MicroClock MK712 touchscreen"
728
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depends on ISA
729
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help
730
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Say Y here if you have the ICS MicroClock MK712 touchscreen
731
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controller chip in your system.
732
-
733
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If unsure, say N.
734
-
735
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To compile this driver as a module, choose M here: the
736
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module will be called mk712.
737
-
738
726
config TOUCHSCREEN_HP600
739
727
tristate "HP Jornada 6xx touchscreen"
740
728
depends on SH_HP6XX && SH_ADC
-1
drivers/input/touchscreen/Makefile
-1
drivers/input/touchscreen/Makefile
···
68
68
obj-$(CONFIG_TOUCHSCREEN_MMS114) += mms114.o
69
69
obj-$(CONFIG_TOUCHSCREEN_MSG2638) += msg2638.o
70
70
obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o
71
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obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o
72
71
obj-$(CONFIG_TOUCHSCREEN_NOVATEK_NVT_TS) += novatek-nvt-ts.o
73
72
obj-$(CONFIG_TOUCHSCREEN_HP600) += hp680_ts_input.o
74
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obj-$(CONFIG_TOUCHSCREEN_HP7XX) += jornada720_ts.o
-207
drivers/input/touchscreen/mk712.c
-207
drivers/input/touchscreen/mk712.c
···
1
-
// SPDX-License-Identifier: GPL-2.0-only
2
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/*
3
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* ICS MK712 touchscreen controller driver
4
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*
5
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* Copyright (c) 1999-2002 Transmeta Corporation
6
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* Copyright (c) 2005 Rick Koch <n1gp@hotmail.com>
7
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* Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
8
-
*/
9
-
10
-
11
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/*
12
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* This driver supports the ICS MicroClock MK712 TouchScreen controller,
13
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* found in Gateway AOL Connected Touchpad computers.
14
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*
15
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* Documentation for ICS MK712 can be found at:
16
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* https://www.idt.com/general-parts/mk712-touch-screen-controller
17
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*/
18
-
19
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/*
20
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* 1999-12-18: original version, Daniel Quinlan
21
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* 1999-12-19: added anti-jitter code, report pen-up events, fixed mk712_poll
22
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* to use queue_empty, Nathan Laredo
23
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* 1999-12-20: improved random point rejection, Nathan Laredo
24
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* 2000-01-05: checked in new anti-jitter code, changed mouse protocol, fixed
25
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* queue code, added module options, other fixes, Daniel Quinlan
26
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* 2002-03-15: Clean up for kernel merge <alan@redhat.com>
27
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* Fixed multi open race, fixed memory checks, fixed resource
28
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* allocation, fixed close/powerdown bug, switched to new init
29
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* 2005-01-18: Ported to 2.6 from 2.4.28, Rick Koch
30
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* 2005-02-05: Rewritten for the input layer, Vojtech Pavlik
31
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*
32
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*/
33
-
34
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#include <linux/module.h>
35
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#include <linux/kernel.h>
36
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#include <linux/init.h>
37
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#include <linux/errno.h>
38
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#include <linux/delay.h>
39
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#include <linux/ioport.h>
40
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#include <linux/interrupt.h>
41
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#include <linux/input.h>
42
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#include <asm/io.h>
43
-
44
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MODULE_AUTHOR("Daniel Quinlan <quinlan@pathname.com>, Vojtech Pavlik <vojtech@suse.cz>");
45
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MODULE_DESCRIPTION("ICS MicroClock MK712 TouchScreen driver");
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MODULE_LICENSE("GPL");
47
-
48
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static unsigned int mk712_io = 0x260; /* Also 0x200, 0x208, 0x300 */
49
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module_param_hw_named(io, mk712_io, uint, ioport, 0);
50
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MODULE_PARM_DESC(io, "I/O base address of MK712 touchscreen controller");
51
-
52
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static unsigned int mk712_irq = 10; /* Also 12, 14, 15 */
53
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module_param_hw_named(irq, mk712_irq, uint, irq, 0);
54
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MODULE_PARM_DESC(irq, "IRQ of MK712 touchscreen controller");
55
-
56
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/* eight 8-bit registers */
57
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#define MK712_STATUS 0
58
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#define MK712_X 2
59
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#define MK712_Y 4
60
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#define MK712_CONTROL 6
61
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#define MK712_RATE 7
62
-
63
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/* status */
64
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#define MK712_STATUS_TOUCH 0x10
65
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#define MK712_CONVERSION_COMPLETE 0x80
66
-
67
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/* control */
68
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#define MK712_ENABLE_INT 0x01
69
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#define MK712_INT_ON_CONVERSION_COMPLETE 0x02
70
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#define MK712_INT_ON_CHANGE_IN_TOUCH_STATUS 0x04
71
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#define MK712_ENABLE_PERIODIC_CONVERSIONS 0x10
72
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#define MK712_READ_ONE_POINT 0x20
73
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#define MK712_POWERUP 0x40
74
-
75
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static struct input_dev *mk712_dev;
76
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static DEFINE_SPINLOCK(mk712_lock);
77
-
78
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static irqreturn_t mk712_interrupt(int irq, void *dev_id)
79
-
{
80
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unsigned char status;
81
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static int debounce = 1;
82
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static unsigned short last_x;
83
-
static unsigned short last_y;
84
-
85
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guard(spinlock)(&mk712_lock);
86
-
87
-
status = inb(mk712_io + MK712_STATUS);
88
-
89
-
if (~status & MK712_CONVERSION_COMPLETE) {
90
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debounce = 1;
91
-
goto end;
92
-
}
93
-
94
-
if (~status & MK712_STATUS_TOUCH) {
95
-
debounce = 1;
96
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input_report_key(mk712_dev, BTN_TOUCH, 0);
97
-
goto end;
98
-
}
99
-
100
-
if (debounce) {
101
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debounce = 0;
102
-
goto end;
103
-
}
104
-
105
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input_report_key(mk712_dev, BTN_TOUCH, 1);
106
-
input_report_abs(mk712_dev, ABS_X, last_x);
107
-
input_report_abs(mk712_dev, ABS_Y, last_y);
108
-
109
-
end:
110
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last_x = inw(mk712_io + MK712_X) & 0x0fff;
111
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last_y = inw(mk712_io + MK712_Y) & 0x0fff;
112
-
input_sync(mk712_dev);
113
-
114
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return IRQ_HANDLED;
115
-
}
116
-
117
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static int mk712_open(struct input_dev *dev)
118
-
{
119
-
guard(spinlock_irqsave)(&mk712_lock);
120
-
121
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outb(0, mk712_io + MK712_CONTROL); /* Reset */
122
-
123
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outb(MK712_ENABLE_INT | MK712_INT_ON_CONVERSION_COMPLETE |
124
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MK712_INT_ON_CHANGE_IN_TOUCH_STATUS |
125
-
MK712_ENABLE_PERIODIC_CONVERSIONS |
126
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MK712_POWERUP, mk712_io + MK712_CONTROL);
127
-
128
-
outb(10, mk712_io + MK712_RATE); /* 187 points per second */
129
-
130
-
return 0;
131
-
}
132
-
133
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static void mk712_close(struct input_dev *dev)
134
-
{
135
-
guard(spinlock_irqsave)(&mk712_lock);
136
-
137
-
outb(0, mk712_io + MK712_CONTROL);
138
-
}
139
-
140
-
static int __init mk712_init(void)
141
-
{
142
-
int err;
143
-
144
-
if (!request_region(mk712_io, 8, "mk712")) {
145
-
printk(KERN_WARNING "mk712: unable to get IO region\n");
146
-
return -ENODEV;
147
-
}
148
-
149
-
outb(0, mk712_io + MK712_CONTROL);
150
-
151
-
if ((inw(mk712_io + MK712_X) & 0xf000) || /* Sanity check */
152
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(inw(mk712_io + MK712_Y) & 0xf000) ||
153
-
(inw(mk712_io + MK712_STATUS) & 0xf333)) {
154
-
printk(KERN_WARNING "mk712: device not present\n");
155
-
err = -ENODEV;
156
-
goto fail1;
157
-
}
158
-
159
-
mk712_dev = input_allocate_device();
160
-
if (!mk712_dev) {
161
-
printk(KERN_ERR "mk712: not enough memory\n");
162
-
err = -ENOMEM;
163
-
goto fail1;
164
-
}
165
-
166
-
mk712_dev->name = "ICS MicroClock MK712 TouchScreen";
167
-
mk712_dev->phys = "isa0260/input0";
168
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mk712_dev->id.bustype = BUS_ISA;
169
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mk712_dev->id.vendor = 0x0005;
170
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mk712_dev->id.product = 0x0001;
171
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mk712_dev->id.version = 0x0100;
172
-
173
-
mk712_dev->open = mk712_open;
174
-
mk712_dev->close = mk712_close;
175
-
176
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mk712_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
177
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mk712_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
178
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input_set_abs_params(mk712_dev, ABS_X, 0, 0xfff, 88, 0);
179
-
input_set_abs_params(mk712_dev, ABS_Y, 0, 0xfff, 88, 0);
180
-
181
-
if (request_irq(mk712_irq, mk712_interrupt, 0, "mk712", mk712_dev)) {
182
-
printk(KERN_WARNING "mk712: unable to get IRQ\n");
183
-
err = -EBUSY;
184
-
goto fail1;
185
-
}
186
-
187
-
err = input_register_device(mk712_dev);
188
-
if (err)
189
-
goto fail2;
190
-
191
-
return 0;
192
-
193
-
fail2: free_irq(mk712_irq, mk712_dev);
194
-
fail1: input_free_device(mk712_dev);
195
-
release_region(mk712_io, 8);
196
-
return err;
197
-
}
198
-
199
-
static void __exit mk712_exit(void)
200
-
{
201
-
input_unregister_device(mk712_dev);
202
-
free_irq(mk712_irq, mk712_dev);
203
-
release_region(mk712_io, 8);
204
-
}
205
-
206
-
module_init(mk712_init);
207
-
module_exit(mk712_exit);