Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
input: Add onkey driver for Marvell 88PM886 PMIC
Marvell 88PM886 PMIC provides onkey among other things. Add client
driver to handle it. The driver currently only provides a basic support
omitting additional functions found in the vendor version, such as long
onkey and GPIO integration.
Signed-off-by: Karel Balej <balejk@matfyz.cz>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20240531175109.15599-5-balejk@matfyz.cz
Signed-off-by: Lee Jones <lee@kernel.org>
authored by
Karel Balej
and committed by
Lee Jones
914089db
5d1a5144
+106
+98
drivers/input/misc/88pm886-onkey.c
+98
drivers/input/misc/88pm886-onkey.c
···
1
+
// SPDX-License-Identifier: GPL-2.0-only
2
+
#include <linux/input.h>
3
+
#include <linux/interrupt.h>
4
+
#include <linux/irq.h>
5
+
#include <linux/platform_device.h>
6
+
#include <linux/regmap.h>
7
+
8
+
#include <linux/mfd/88pm886.h>
9
+
10
+
struct pm886_onkey {
11
+
struct input_dev *idev;
12
+
struct pm886_chip *chip;
13
+
};
14
+
15
+
static irqreturn_t pm886_onkey_irq_handler(int irq, void *data)
16
+
{
17
+
struct pm886_onkey *onkey = data;
18
+
struct regmap *regmap = onkey->chip->regmap;
19
+
struct input_dev *idev = onkey->idev;
20
+
struct device *parent = idev->dev.parent;
21
+
unsigned int val;
22
+
int err;
23
+
24
+
err = regmap_read(regmap, PM886_REG_STATUS1, &val);
25
+
if (err) {
26
+
dev_err(parent, "Failed to read status: %d\n", err);
27
+
return IRQ_NONE;
28
+
}
29
+
val &= PM886_ONKEY_STS1;
30
+
31
+
input_report_key(idev, KEY_POWER, val);
32
+
input_sync(idev);
33
+
34
+
return IRQ_HANDLED;
35
+
}
36
+
37
+
static int pm886_onkey_probe(struct platform_device *pdev)
38
+
{
39
+
struct pm886_chip *chip = dev_get_drvdata(pdev->dev.parent);
40
+
struct device *dev = &pdev->dev;
41
+
struct pm886_onkey *onkey;
42
+
struct input_dev *idev;
43
+
int irq, err;
44
+
45
+
onkey = devm_kzalloc(dev, sizeof(*onkey), GFP_KERNEL);
46
+
if (!onkey)
47
+
return -ENOMEM;
48
+
49
+
onkey->chip = chip;
50
+
51
+
irq = platform_get_irq(pdev, 0);
52
+
if (irq < 0)
53
+
return dev_err_probe(dev, irq, "Failed to get IRQ\n");
54
+
55
+
idev = devm_input_allocate_device(dev);
56
+
if (!idev) {
57
+
dev_err(dev, "Failed to allocate input device\n");
58
+
return -ENOMEM;
59
+
}
60
+
onkey->idev = idev;
61
+
62
+
idev->name = "88pm886-onkey";
63
+
idev->phys = "88pm886-onkey/input0";
64
+
idev->id.bustype = BUS_I2C;
65
+
66
+
input_set_capability(idev, EV_KEY, KEY_POWER);
67
+
68
+
err = devm_request_threaded_irq(dev, irq, NULL, pm886_onkey_irq_handler,
69
+
IRQF_ONESHOT | IRQF_NO_SUSPEND, "onkey",
70
+
onkey);
71
+
if (err)
72
+
return dev_err_probe(dev, err, "Failed to request IRQ\n");
73
+
74
+
err = input_register_device(idev);
75
+
if (err)
76
+
return dev_err_probe(dev, err, "Failed to register input device\n");
77
+
78
+
return 0;
79
+
}
80
+
81
+
static const struct platform_device_id pm886_onkey_id_table[] = {
82
+
{ "88pm886-onkey", },
83
+
{ }
84
+
};
85
+
MODULE_DEVICE_TABLE(platform, pm886_onkey_id_table);
86
+
87
+
static struct platform_driver pm886_onkey_driver = {
88
+
.driver = {
89
+
.name = "88pm886-onkey",
90
+
},
91
+
.probe = pm886_onkey_probe,
92
+
.id_table = pm886_onkey_id_table,
93
+
};
94
+
module_platform_driver(pm886_onkey_driver);
95
+
96
+
MODULE_DESCRIPTION("Marvell 88PM886 onkey driver");
97
+
MODULE_AUTHOR("Karel Balej <balejk@matfyz.cz>");
98
+
MODULE_LICENSE("GPL");
+7
drivers/input/misc/Kconfig
+7
drivers/input/misc/Kconfig
···
33
33
To compile this driver as a module, choose M here: the module
34
34
will be called 88pm80x_onkey.
35
35
36
+
config INPUT_88PM886_ONKEY
37
+
tristate "Marvell 88PM886 onkey support"
38
+
depends on MFD_88PM886_PMIC
39
+
help
40
+
Support the onkey of Marvell 88PM886 PMIC as an input device
41
+
reporting power button status.
42
+
36
43
config INPUT_AB8500_PONKEY
37
44
tristate "AB8500 Pon (PowerOn) Key"
38
45
depends on AB8500_CORE
+1
drivers/input/misc/Makefile
+1
drivers/input/misc/Makefile
···
7
7
8
8
obj-$(CONFIG_INPUT_88PM860X_ONKEY) += 88pm860x_onkey.o
9
9
obj-$(CONFIG_INPUT_88PM80X_ONKEY) += 88pm80x_onkey.o
10
+
obj-$(CONFIG_INPUT_88PM886_ONKEY) += 88pm886-onkey.o
10
11
obj-$(CONFIG_INPUT_AB8500_PONKEY) += ab8500-ponkey.o
11
12
obj-$(CONFIG_INPUT_AD714X) += ad714x.o
12
13
obj-$(CONFIG_INPUT_AD714X_I2C) += ad714x-i2c.o