mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-26 21:54:11 +08:00
ce535a2efb
We need the of_match table if we want to use the compatible string in the pmic's child node and get the onkey driver loaded automatically. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
//
|
|
// Copyright (C) 2018 BayLibre SAS
|
|
// Author: Bartosz Golaszewski <bgolaszewski@baylibre.com>
|
|
//
|
|
// ONKEY driver for MAXIM 77650/77651 charger/power-supply.
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/input.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/mfd/max77650.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#define MAX77650_ONKEY_MODE_MASK BIT(3)
|
|
#define MAX77650_ONKEY_MODE_PUSH 0x00
|
|
#define MAX77650_ONKEY_MODE_SLIDE BIT(3)
|
|
|
|
struct max77650_onkey {
|
|
struct input_dev *input;
|
|
unsigned int code;
|
|
};
|
|
|
|
static irqreturn_t max77650_onkey_falling(int irq, void *data)
|
|
{
|
|
struct max77650_onkey *onkey = data;
|
|
|
|
input_report_key(onkey->input, onkey->code, 0);
|
|
input_sync(onkey->input);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t max77650_onkey_rising(int irq, void *data)
|
|
{
|
|
struct max77650_onkey *onkey = data;
|
|
|
|
input_report_key(onkey->input, onkey->code, 1);
|
|
input_sync(onkey->input);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int max77650_onkey_probe(struct platform_device *pdev)
|
|
{
|
|
int irq_r, irq_f, error, mode;
|
|
struct max77650_onkey *onkey;
|
|
struct device *dev, *parent;
|
|
struct regmap *map;
|
|
unsigned int type;
|
|
|
|
dev = &pdev->dev;
|
|
parent = dev->parent;
|
|
|
|
map = dev_get_regmap(parent, NULL);
|
|
if (!map)
|
|
return -ENODEV;
|
|
|
|
onkey = devm_kzalloc(dev, sizeof(*onkey), GFP_KERNEL);
|
|
if (!onkey)
|
|
return -ENOMEM;
|
|
|
|
error = device_property_read_u32(dev, "linux,code", &onkey->code);
|
|
if (error)
|
|
onkey->code = KEY_POWER;
|
|
|
|
if (device_property_read_bool(dev, "maxim,onkey-slide")) {
|
|
mode = MAX77650_ONKEY_MODE_SLIDE;
|
|
type = EV_SW;
|
|
} else {
|
|
mode = MAX77650_ONKEY_MODE_PUSH;
|
|
type = EV_KEY;
|
|
}
|
|
|
|
error = regmap_update_bits(map, MAX77650_REG_CNFG_GLBL,
|
|
MAX77650_ONKEY_MODE_MASK, mode);
|
|
if (error)
|
|
return error;
|
|
|
|
irq_f = platform_get_irq_byname(pdev, "nEN_F");
|
|
if (irq_f < 0)
|
|
return irq_f;
|
|
|
|
irq_r = platform_get_irq_byname(pdev, "nEN_R");
|
|
if (irq_r < 0)
|
|
return irq_r;
|
|
|
|
onkey->input = devm_input_allocate_device(dev);
|
|
if (!onkey->input)
|
|
return -ENOMEM;
|
|
|
|
onkey->input->name = "max77650_onkey";
|
|
onkey->input->phys = "max77650_onkey/input0";
|
|
onkey->input->id.bustype = BUS_I2C;
|
|
input_set_capability(onkey->input, type, onkey->code);
|
|
|
|
error = devm_request_any_context_irq(dev, irq_f, max77650_onkey_falling,
|
|
IRQF_ONESHOT, "onkey-down", onkey);
|
|
if (error < 0)
|
|
return error;
|
|
|
|
error = devm_request_any_context_irq(dev, irq_r, max77650_onkey_rising,
|
|
IRQF_ONESHOT, "onkey-up", onkey);
|
|
if (error < 0)
|
|
return error;
|
|
|
|
return input_register_device(onkey->input);
|
|
}
|
|
|
|
static const struct of_device_id max77650_onkey_of_match[] = {
|
|
{ .compatible = "maxim,max77650-onkey" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, max77650_onkey_of_match);
|
|
|
|
static struct platform_driver max77650_onkey_driver = {
|
|
.driver = {
|
|
.name = "max77650-onkey",
|
|
.of_match_table = max77650_onkey_of_match,
|
|
},
|
|
.probe = max77650_onkey_probe,
|
|
};
|
|
module_platform_driver(max77650_onkey_driver);
|
|
|
|
MODULE_DESCRIPTION("MAXIM 77650/77651 ONKEY driver");
|
|
MODULE_AUTHOR("Bartosz Golaszewski <bgolaszewski@baylibre.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:max77650-onkey");
|