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authorBalaji Rao <balajirrao@openmoko.org>2009-01-08 19:50:58 -0500
committerSamuel Ortiz <samuel@sortiz.org>2009-01-10 19:34:25 -0500
commit1851b06ac40c57fe4efe7ddefc3c04dab4f99e67 (patch)
tree78e05cbde92b7469eccf13d073495a1f7921e329 /drivers/input/misc
parentf5714dc97d63cc0dd1219bd0eb2e1f8df1e4347a (diff)
input: PCF50633 input driver
Signed-off-by: Balaji Rao <balajirrao@openmoko.org> Cc: Andy Green <andy@openmoko.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
Diffstat (limited to 'drivers/input/misc')
-rw-r--r--drivers/input/misc/Kconfig7
-rw-r--r--drivers/input/misc/Makefile1
-rw-r--r--drivers/input/misc/pcf50633-input.c132
3 files changed, 140 insertions, 0 deletions
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 199055db5082..67e5553f699a 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -220,4 +220,11 @@ config HP_SDC_RTC
220 Say Y here if you want to support the built-in real time clock 220 Say Y here if you want to support the built-in real time clock
221 of the HP SDC controller. 221 of the HP SDC controller.
222 222
223config INPUT_PCF50633_PMU
224 tristate "PCF50633 PMU events"
225 depends on MFD_PCF50633
226 help
227 Say Y to include support for delivering PMU events via input
228 layer on NXP PCF50633.
229
223endif 230endif
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index d7db2aeb8a98..bb62e6efacf3 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -21,3 +21,4 @@ obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
21obj-$(CONFIG_INPUT_UINPUT) += uinput.o 21obj-$(CONFIG_INPUT_UINPUT) += uinput.o
22obj-$(CONFIG_INPUT_APANEL) += apanel.o 22obj-$(CONFIG_INPUT_APANEL) += apanel.o
23obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o 23obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o
24obj-$(CONFIG_INPUT_PCF50633_PMU) += pcf50633-input.o
diff --git a/drivers/input/misc/pcf50633-input.c b/drivers/input/misc/pcf50633-input.c
new file mode 100644
index 000000000000..039dcb00ebd9
--- /dev/null
+++ b/drivers/input/misc/pcf50633-input.c
@@ -0,0 +1,132 @@
1/* NXP PCF50633 Input Driver
2 *
3 * (C) 2006-2008 by Openmoko, Inc.
4 * Author: Balaji Rao <balajirrao@openmoko.org>
5 * All rights reserved.
6 *
7 * Broken down from monstrous PCF50633 driver mainly by
8 * Harald Welte, Andy Green and Werner Almesberger
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 as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16
17#include <linux/kernel.h>
18#include <linux/module.h>
19#include <linux/init.h>
20#include <linux/device.h>
21#include <linux/platform_device.h>
22#include <linux/input.h>
23
24#include <linux/mfd/pcf50633/core.h>
25
26#define PCF50633_OOCSTAT_ONKEY 0x01
27#define PCF50633_REG_OOCSTAT 0x12
28#define PCF50633_REG_OOCMODE 0x10
29
30struct pcf50633_input {
31 struct pcf50633 *pcf;
32 struct input_dev *input_dev;
33};
34
35static void
36pcf50633_input_irq(int irq, void *data)
37{
38 struct pcf50633_input *input;
39 int onkey_released;
40
41 input = data;
42
43 /* We report only one event depending on the key press status */
44 onkey_released = pcf50633_reg_read(input->pcf, PCF50633_REG_OOCSTAT)
45 & PCF50633_OOCSTAT_ONKEY;
46
47 if (irq == PCF50633_IRQ_ONKEYF && !onkey_released)
48 input_report_key(input->input_dev, KEY_POWER, 1);
49 else if (irq == PCF50633_IRQ_ONKEYR && onkey_released)
50 input_report_key(input->input_dev, KEY_POWER, 0);
51
52 input_sync(input->input_dev);
53}
54
55static int __devinit pcf50633_input_probe(struct platform_device *pdev)
56{
57 struct pcf50633_input *input;
58 struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data;
59 struct input_dev *input_dev;
60 int ret;
61
62
63 input = kzalloc(sizeof(*input), GFP_KERNEL);
64 if (!input)
65 return -ENOMEM;
66
67 input_dev = input_allocate_device();
68 if (!input_dev) {
69 kfree(input);
70 return -ENOMEM;
71 }
72
73 platform_set_drvdata(pdev, input);
74 input->pcf = pdata->pcf;
75 input->input_dev = input_dev;
76
77 input_dev->name = "PCF50633 PMU events";
78 input_dev->id.bustype = BUS_I2C;
79 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_PWR);
80 set_bit(KEY_POWER, input_dev->keybit);
81
82 ret = input_register_device(input_dev);
83 if (ret) {
84 input_free_device(input_dev);
85 kfree(input);
86 return ret;
87 }
88 pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ONKEYR,
89 pcf50633_input_irq, input);
90 pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ONKEYF,
91 pcf50633_input_irq, input);
92
93 return 0;
94}
95
96static int __devexit pcf50633_input_remove(struct platform_device *pdev)
97{
98 struct pcf50633_input *input = platform_get_drvdata(pdev);
99
100 pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYR);
101 pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYF);
102
103 input_unregister_device(input->input_dev);
104 kfree(input);
105
106 return 0;
107}
108
109static struct platform_driver pcf50633_input_driver = {
110 .driver = {
111 .name = "pcf50633-input",
112 },
113 .probe = pcf50633_input_probe,
114 .remove = __devexit_p(pcf50633_input_remove),
115};
116
117static int __init pcf50633_input_init(void)
118{
119 return platform_driver_register(&pcf50633_input_driver);
120}
121module_init(pcf50633_input_init);
122
123static void __exit pcf50633_input_exit(void)
124{
125 platform_driver_unregister(&pcf50633_input_driver);
126}
127module_exit(pcf50633_input_exit);
128
129MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
130MODULE_DESCRIPTION("PCF50633 input driver");
131MODULE_LICENSE("GPL");
132MODULE_ALIAS("platform:pcf50633-input");