mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 12:15:08 +07:00
62f0f079b9
Add driver that properly handles input event emitted by RAVE SP devices. Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
//
|
|
// Power Button driver for RAVE SP
|
|
//
|
|
// Copyright (C) 2017 Zodiac Inflight Innovations
|
|
//
|
|
//
|
|
|
|
#include <linux/input.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mfd/rave-sp.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#define RAVE_SP_EVNT_BUTTON_PRESS (RAVE_SP_EVNT_BASE + 0x00)
|
|
|
|
struct rave_sp_power_button {
|
|
struct input_dev *idev;
|
|
struct notifier_block nb;
|
|
};
|
|
|
|
static int rave_sp_power_button_event(struct notifier_block *nb,
|
|
unsigned long action, void *data)
|
|
{
|
|
struct rave_sp_power_button *pb =
|
|
container_of(nb, struct rave_sp_power_button, nb);
|
|
const u8 event = rave_sp_action_unpack_event(action);
|
|
const u8 value = rave_sp_action_unpack_value(action);
|
|
struct input_dev *idev = pb->idev;
|
|
|
|
if (event == RAVE_SP_EVNT_BUTTON_PRESS) {
|
|
input_report_key(idev, KEY_POWER, value);
|
|
input_sync(idev);
|
|
|
|
return NOTIFY_STOP;
|
|
}
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static int rave_sp_pwrbutton_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct rave_sp_power_button *pb;
|
|
struct input_dev *idev;
|
|
int error;
|
|
|
|
pb = devm_kzalloc(dev, sizeof(*pb), GFP_KERNEL);
|
|
if (!pb)
|
|
return -ENOMEM;
|
|
|
|
idev = devm_input_allocate_device(dev);
|
|
if (!idev)
|
|
return -ENOMEM;
|
|
|
|
idev->name = pdev->name;
|
|
|
|
input_set_capability(idev, EV_KEY, KEY_POWER);
|
|
|
|
error = input_register_device(idev);
|
|
if (error)
|
|
return error;
|
|
|
|
pb->idev = idev;
|
|
pb->nb.notifier_call = rave_sp_power_button_event;
|
|
pb->nb.priority = 128;
|
|
|
|
error = devm_rave_sp_register_event_notifier(dev, &pb->nb);
|
|
if (error)
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id rave_sp_pwrbutton_of_match[] = {
|
|
{ .compatible = "zii,rave-sp-pwrbutton" },
|
|
{}
|
|
};
|
|
|
|
static struct platform_driver rave_sp_pwrbutton_driver = {
|
|
.probe = rave_sp_pwrbutton_probe,
|
|
.driver = {
|
|
.name = KBUILD_MODNAME,
|
|
.of_match_table = rave_sp_pwrbutton_of_match,
|
|
},
|
|
};
|
|
module_platform_driver(rave_sp_pwrbutton_driver);
|
|
|
|
MODULE_DEVICE_TABLE(of, rave_sp_pwrbutton_of_match);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Andrey Vostrikov <andrey.vostrikov@cogentembedded.com>");
|
|
MODULE_AUTHOR("Nikita Yushchenko <nikita.yoush@cogentembedded.com>");
|
|
MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
|
|
MODULE_DESCRIPTION("RAVE SP Power Button driver");
|