lfs/kernel_drivers_examples
1
0
Fork 0
mirror of https://github.com/54shady/kernel_drivers_examples.git synced 2025-08-11 23:32:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

act8846 pmic i2c driver

Browse Source
This commit is contained in:
zeroway
2016-11-02 13:54:21 +00:00
parent 59fe8d3cd3
commit 516b50d2a6
2 changed files with 72 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
debug/regulator/Makefile
View File

@ -15,6 +15,7 @@ DEBFLAGS = -O2
endif
obj-m := regulator.o
obj-m += act8846.o
KERNELDIR ?= /lib/modules/$(shell uname -r)/build
CC ?= gcc
PWD := $(shell pwd)

71
debug/regulator/act8846.c Normal file
View File

@ -0,0 +1,71 @@
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/of_device.h>
static struct of_device_id act8846_of_match[] = {
{ .compatible = "act,act8846"},
{ },
};
MODULE_DEVICE_TABLE(of, act8846_of_match);
static const struct i2c_device_id act8846_i2c_id[] = {
{ "act8846", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, act8846_i2c_id);
static int act8846_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
const struct of_device_id *match;
/* 检查DT */
if (client->dev.of_node) {
match = of_match_device(act8846_of_match, &client->dev);
if (!match) {
printk("Failed to find matching dt id\n");
return -EINVAL;
}
}
printk("%s, %d\n", __FUNCTION__, __LINE__);
return 0;
}
static int act8846_i2c_remove(struct i2c_client *client)
{
printk("%s, %d\n", __FUNCTION__, __LINE__);
return 0;
}
static struct i2c_driver act8846_i2c_driver = {
.driver = {
.name = "act8846",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(act8846_of_match),
},
.probe = act8846_i2c_probe,
.remove = act8846_i2c_remove,
.id_table = act8846_i2c_id,
};
static int act8846_module_init(void)
{
int ret;
ret = i2c_add_driver(&act8846_i2c_driver);
if (ret != 0)
pr_err("Failed to register I2C driver: %d\n", ret);
return ret;
}
module_init(act8846_module_init);
static void act8846_module_exit(void)
{
i2c_del_driver(&act8846_i2c_driver);
}
module_exit(act8846_module_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("zeroway");
MODULE_DESCRIPTION("act8846 PMIC driver");