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-rw-r--r--drivers/input/misc/Kconfig11
-rw-r--r--drivers/input/misc/Makefile1
-rw-r--r--drivers/input/misc/cobalt_btns.c209
3 files changed, 220 insertions, 1 deletions
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 41b42587f5e9..56941155ec87 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -40,6 +40,15 @@ config INPUT_M68K_BEEP
40 tristate "M68k Beeper support" 40 tristate "M68k Beeper support"
41 depends on M68K 41 depends on M68K
42 42
43config INPUT_COBALT_BTNS
44 tristate "Cobalt button interface"
45 depends on MIPS_COBALT
46 help
47 Say Y here if you want to support MIPS Cobalt button interface.
48
49 To compile this driver as a module, choose M here: the
50 module will be called cobalt_btns.
51
43config INPUT_WISTRON_BTNS 52config INPUT_WISTRON_BTNS
44 tristate "x86 Wistron laptop button interface" 53 tristate "x86 Wistron laptop button interface"
45 depends on X86 && !X86_64 54 depends on X86 && !X86_64
@@ -82,7 +91,7 @@ config INPUT_UINPUT
82 module will be called uinput. 91 module will be called uinput.
83 92
84config HP_SDC_RTC 93config HP_SDC_RTC
85 tristate "HP SDC Real Time Clock" 94 tristate "HP SDC Real Time Clock"
86 depends on GSC || HP300 95 depends on GSC || HP300
87 select HP_SDC 96 select HP_SDC
88 help 97 help
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index e0a8d58c9e9b..9f08f27b06de 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o
8obj-$(CONFIG_INPUT_PCSPKR) += pcspkr.o 8obj-$(CONFIG_INPUT_PCSPKR) += pcspkr.o
9obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o 9obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o
10obj-$(CONFIG_INPUT_UINPUT) += uinput.o 10obj-$(CONFIG_INPUT_UINPUT) += uinput.o
11obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o
11obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o 12obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o
12obj-$(CONFIG_INPUT_ATLAS_BTNS) += atlas_btns.o 13obj-$(CONFIG_INPUT_ATLAS_BTNS) += atlas_btns.o
13obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o 14obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
diff --git a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c
new file mode 100644
index 000000000000..b14f49e768cc
--- /dev/null
+++ b/drivers/input/misc/cobalt_btns.c
@@ -0,0 +1,209 @@
1/*
2 * Cobalt button interface driver.
3 *
4 * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20#include <linux/init.h>
21#include <linux/input.h>
22#include <linux/ioport.h>
23#include <linux/module.h>
24#include <linux/platform_device.h>
25#include <linux/jiffies.h>
26#include <linux/timer.h>
27
28#define BUTTONS_POLL_INTERVAL 30 /* msec */
29#define BUTTONS_COUNT_THRESHOLD 3
30#define BUTTONS_STATUS_MASK 0xfe000000
31
32struct buttons_dev {
33 struct input_dev *input;
34 void __iomem *reg;
35};
36
37struct buttons_map {
38 uint32_t mask;
39 int keycode;
40 int count;
41};
42
43static struct buttons_map buttons_map[] = {
44 { 0x02000000, KEY_RESTART, },
45 { 0x04000000, KEY_LEFT, },
46 { 0x08000000, KEY_UP, },
47 { 0x10000000, KEY_DOWN, },
48 { 0x20000000, KEY_RIGHT, },
49 { 0x40000000, KEY_ENTER, },
50 { 0x80000000, KEY_SELECT, },
51};
52
53static struct resource cobalt_buttons_resource __initdata = {
54 .start = 0x1d000000,
55 .end = 0x1d000003,
56 .flags = IORESOURCE_MEM,
57};
58
59static struct platform_device *cobalt_buttons_device;
60
61static struct timer_list buttons_timer;
62
63static void handle_buttons(unsigned long data)
64{
65 struct buttons_map *button = buttons_map;
66 struct buttons_dev *bdev;
67 uint32_t status;
68 int i;
69
70 bdev = (struct buttons_dev *)data;
71 status = readl(bdev->reg);
72 status = ~status & BUTTONS_STATUS_MASK;
73
74 for (i = 0; i < ARRAY_SIZE(buttons_map); i++) {
75 if (status & button->mask) {
76 button->count++;
77 } else {
78 if (button->count >= BUTTONS_COUNT_THRESHOLD) {
79 input_report_key(bdev->input, button->keycode, 0);
80 input_sync(bdev->input);
81 }
82 button->count = 0;
83 }
84
85 if (button->count == BUTTONS_COUNT_THRESHOLD) {
86 input_report_key(bdev->input, button->keycode, 1);
87 input_sync(bdev->input);
88 }
89
90 button++;
91 }
92
93 mod_timer(&buttons_timer, jiffies + msecs_to_jiffies(BUTTONS_POLL_INTERVAL));
94}
95
96static int cobalt_buttons_open(struct input_dev *dev)
97{
98 mod_timer(&buttons_timer, jiffies + msecs_to_jiffies(BUTTONS_POLL_INTERVAL));
99
100 return 0;
101}
102
103static void cobalt_buttons_close(struct input_dev *dev)
104{
105 del_timer_sync(&buttons_timer);
106}
107
108static int __devinit cobalt_buttons_probe(struct platform_device *pdev)
109{
110 struct buttons_dev *bdev;
111 struct input_dev *input;
112 struct resource *res;
113 int error, i;
114
115 bdev = kzalloc(sizeof(struct buttons_dev), GFP_KERNEL);
116 input = input_allocate_device();
117 if (!bdev || !input) {
118 error = -ENOMEM;
119 goto err_free_mem;
120 }
121
122 input->name = "Cobalt buttons";
123 input->phys = "cobalt/input0";
124 input->id.bustype = BUS_HOST;
125 input->cdev.dev = &pdev->dev;
126 input->open = cobalt_buttons_open;
127 input->close = cobalt_buttons_close;
128
129 input->evbit[0] = BIT(EV_KEY);
130 for (i = 0; i < ARRAY_SIZE(buttons_map); i++) {
131 set_bit(buttons_map[i].keycode, input->keybit);
132 buttons_map[i].count = 0;
133 }
134
135 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
136 if (!res) {
137 error = -EBUSY;
138 goto err_free_mem;
139 }
140
141 bdev->input = input;
142 bdev->reg = ioremap(res->start, res->end - res->start + 1);
143 dev_set_drvdata(&pdev->dev, bdev);
144
145 setup_timer(&buttons_timer, handle_buttons, (unsigned long)bdev);
146
147 error = input_register_device(input);
148 if (error)
149 goto err_iounmap;
150
151 return 0;
152
153 err_iounmap:
154 iounmap(bdev->reg);
155 err_free_mem:
156 input_free_device(input);
157 kfree(bdev);
158 dev_set_drvdata(&pdev->dev, NULL);
159 return error;
160}
161
162static int __devexit cobalt_buttons_remove(struct platform_device *pdev)
163{
164 struct device *dev = &pdev->dev;
165 struct buttons_dev *bdev = dev_get_drvdata(dev);
166
167 input_unregister_device(bdev->input);
168 iounmap(bdev->reg);
169 kfree(bdev);
170 dev_set_drvdata(dev, NULL);
171
172 return 0;
173}
174
175static struct platform_driver cobalt_buttons_driver = {
176 .probe = cobalt_buttons_probe,
177 .remove = __devexit_p(cobalt_buttons_remove),
178 .driver = {
179 .name = "Cobalt buttons",
180 .owner = THIS_MODULE,
181 },
182};
183
184static int __init cobalt_buttons_init(void)
185{
186 int retval;
187
188 cobalt_buttons_device = platform_device_register_simple("Cobalt buttons", -1,
189 &cobalt_buttons_resource, 1);
190 if (IS_ERR(cobalt_buttons_device)) {
191 retval = PTR_ERR(cobalt_buttons_device);
192 return retval;
193 }
194
195 retval = platform_driver_register(&cobalt_buttons_driver);
196 if (retval < 0)
197 platform_device_unregister(cobalt_buttons_device);
198
199 return retval;
200}
201
202static void __exit cobalt_buttons_exit(void)
203{
204 platform_driver_unregister(&cobalt_buttons_driver);
205 platform_device_unregister(cobalt_buttons_device);
206}
207
208module_init(cobalt_buttons_init);
209module_exit(cobalt_buttons_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 09:09:09 -0500