Loading...
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Rockchip RK805 PMIC Power Key driver
4 *
5 * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
6 *
7 * Author: Joseph Chen <chenjh@rock-chips.com>
8 */
9
10#include <linux/errno.h>
11#include <linux/init.h>
12#include <linux/input.h>
13#include <linux/interrupt.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/platform_device.h>
17
18static irqreturn_t pwrkey_fall_irq(int irq, void *_pwr)
19{
20 struct input_dev *pwr = _pwr;
21
22 input_report_key(pwr, KEY_POWER, 1);
23 input_sync(pwr);
24
25 return IRQ_HANDLED;
26}
27
28static irqreturn_t pwrkey_rise_irq(int irq, void *_pwr)
29{
30 struct input_dev *pwr = _pwr;
31
32 input_report_key(pwr, KEY_POWER, 0);
33 input_sync(pwr);
34
35 return IRQ_HANDLED;
36}
37
38static int rk805_pwrkey_probe(struct platform_device *pdev)
39{
40 struct input_dev *pwr;
41 int fall_irq, rise_irq;
42 int err;
43
44 pwr = devm_input_allocate_device(&pdev->dev);
45 if (!pwr) {
46 dev_err(&pdev->dev, "Can't allocate power button\n");
47 return -ENOMEM;
48 }
49
50 pwr->name = "rk805 pwrkey";
51 pwr->phys = "rk805_pwrkey/input0";
52 pwr->id.bustype = BUS_HOST;
53 input_set_capability(pwr, EV_KEY, KEY_POWER);
54
55 fall_irq = platform_get_irq(pdev, 0);
56 if (fall_irq < 0)
57 return fall_irq;
58
59 rise_irq = platform_get_irq(pdev, 1);
60 if (rise_irq < 0)
61 return rise_irq;
62
63 err = devm_request_any_context_irq(&pwr->dev, fall_irq,
64 pwrkey_fall_irq,
65 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
66 "rk805_pwrkey_fall", pwr);
67 if (err < 0) {
68 dev_err(&pdev->dev, "Can't register fall irq: %d\n", err);
69 return err;
70 }
71
72 err = devm_request_any_context_irq(&pwr->dev, rise_irq,
73 pwrkey_rise_irq,
74 IRQF_TRIGGER_RISING | IRQF_ONESHOT,
75 "rk805_pwrkey_rise", pwr);
76 if (err < 0) {
77 dev_err(&pdev->dev, "Can't register rise irq: %d\n", err);
78 return err;
79 }
80
81 err = input_register_device(pwr);
82 if (err) {
83 dev_err(&pdev->dev, "Can't register power button: %d\n", err);
84 return err;
85 }
86
87 platform_set_drvdata(pdev, pwr);
88 device_init_wakeup(&pdev->dev, true);
89
90 return 0;
91}
92
93static struct platform_driver rk805_pwrkey_driver = {
94 .probe = rk805_pwrkey_probe,
95 .driver = {
96 .name = "rk805-pwrkey",
97 },
98};
99module_platform_driver(rk805_pwrkey_driver);
100
101MODULE_ALIAS("platform:rk805-pwrkey");
102MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>");
103MODULE_DESCRIPTION("RK805 PMIC Power Key driver");
104MODULE_LICENSE("GPL");
1/*
2 * Rockchip RK805 PMIC Power Key driver
3 *
4 * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
5 *
6 * Author: Joseph Chen <chenjh@rock-chips.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14#include <linux/errno.h>
15#include <linux/init.h>
16#include <linux/input.h>
17#include <linux/interrupt.h>
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/platform_device.h>
21
22static irqreturn_t pwrkey_fall_irq(int irq, void *_pwr)
23{
24 struct input_dev *pwr = _pwr;
25
26 input_report_key(pwr, KEY_POWER, 1);
27 input_sync(pwr);
28
29 return IRQ_HANDLED;
30}
31
32static irqreturn_t pwrkey_rise_irq(int irq, void *_pwr)
33{
34 struct input_dev *pwr = _pwr;
35
36 input_report_key(pwr, KEY_POWER, 0);
37 input_sync(pwr);
38
39 return IRQ_HANDLED;
40}
41
42static int rk805_pwrkey_probe(struct platform_device *pdev)
43{
44 struct input_dev *pwr;
45 int fall_irq, rise_irq;
46 int err;
47
48 pwr = devm_input_allocate_device(&pdev->dev);
49 if (!pwr) {
50 dev_err(&pdev->dev, "Can't allocate power button\n");
51 return -ENOMEM;
52 }
53
54 pwr->name = "rk805 pwrkey";
55 pwr->phys = "rk805_pwrkey/input0";
56 pwr->id.bustype = BUS_HOST;
57 input_set_capability(pwr, EV_KEY, KEY_POWER);
58
59 fall_irq = platform_get_irq(pdev, 0);
60 if (fall_irq < 0) {
61 dev_err(&pdev->dev, "Can't get fall irq: %d\n", fall_irq);
62 return fall_irq;
63 }
64
65 rise_irq = platform_get_irq(pdev, 1);
66 if (rise_irq < 0) {
67 dev_err(&pdev->dev, "Can't get rise irq: %d\n", rise_irq);
68 return rise_irq;
69 }
70
71 err = devm_request_any_context_irq(&pwr->dev, fall_irq,
72 pwrkey_fall_irq,
73 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
74 "rk805_pwrkey_fall", pwr);
75 if (err < 0) {
76 dev_err(&pdev->dev, "Can't register fall irq: %d\n", err);
77 return err;
78 }
79
80 err = devm_request_any_context_irq(&pwr->dev, rise_irq,
81 pwrkey_rise_irq,
82 IRQF_TRIGGER_RISING | IRQF_ONESHOT,
83 "rk805_pwrkey_rise", pwr);
84 if (err < 0) {
85 dev_err(&pdev->dev, "Can't register rise irq: %d\n", err);
86 return err;
87 }
88
89 err = input_register_device(pwr);
90 if (err) {
91 dev_err(&pdev->dev, "Can't register power button: %d\n", err);
92 return err;
93 }
94
95 platform_set_drvdata(pdev, pwr);
96 device_init_wakeup(&pdev->dev, true);
97
98 return 0;
99}
100
101static struct platform_driver rk805_pwrkey_driver = {
102 .probe = rk805_pwrkey_probe,
103 .driver = {
104 .name = "rk805-pwrkey",
105 },
106};
107module_platform_driver(rk805_pwrkey_driver);
108
109MODULE_AUTHOR("Joseph Chen <chenjh@rock-chips.com>");
110MODULE_DESCRIPTION("RK805 PMIC Power Key driver");
111MODULE_LICENSE("GPL");