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#include <linux/module.h>
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/cdev.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/processor.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/file.h>
#include <linux/kernel.h>
#include <linux/kmod.h>
#include <linux/ioctl.h>
/**********************************************************************************/
#define SRT_IOCTL_MAGIC 'e'
#define SRT_OPEN _IO(SRT_IOCTL_MAGIC, 1)
#define SRT_RELEASE _IO(SRT_IOCTL_MAGIC, 2)
#define SRT_ENABLE _IO(SRT_IOCTL_MAGIC, 3)
#define SRT_READ1 _IOR(SRT_IOCTL_MAGIC, 4, struct srtinfo_struct)
#define SRT_READ2 _IOR(SRT_IOCTL_MAGIC, 5, struct srtinfo_struct)
#define SRT_WRITE1 _IOW(SRT_IOCTL_MAGIC, 6, struct srtinfo_struct)
#define SRT_WRITE2 _IOW(SRT_IOCTL_MAGIC, 7, struct srtinfo_struct)
#include "sprd_srt.h"
/**********************************************************************************/
static struct srt_dev *g_srt_dev=0;
static int srt_open(struct inode *inode, struct file *filp)
{
return 0;
}
static int srt_release(struct inode *inode, struct file *filp)
{
return 0;
}
static ssize_t srt_read(struct file *filp, char __user *buf, size_t size, loff_t *ppos)
{
return 0;
}
static ssize_t srt_write(struct file *filp, const char __user *buf, size_t size, loff_t *ppos)
{
return 0;
}
static loff_t srt_llseek(struct file *filp, loff_t offset, int orig)
{
return 0;
}
static long srt_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
int i,ret=-1;
switch (cmd)
{
case SRT_READ1:
break;
case SRT_READ2:
break;
case SRT_WRITE1:
break;
case SRT_WRITE2:
break;
default:
return - EINVAL;
}
return 0;
}
static const struct file_operations srt_fops = {
.owner = THIS_MODULE,
.open = srt_open,
.release = srt_release,
.read = srt_read,
.write = srt_write,
.llseek = srt_llseek,
.unlocked_ioctl = srt_ioctl,
};
/**********************************************************************************/
int srt_init(void)
{
int err;
dev_t devno;
DEBUG_PRINT(LOG_TAG "%s Start\n", __func__);
g_srt_dev = kmalloc(sizeof(struct srt_dev), GFP_KERNEL);
if (!g_srt_dev)
{
DEBUG_PRINT(LOG_TAG "mem alloc fail");
return -1;
}
memset(g_srt_dev, 0, sizeof(struct srt_dev));
err = alloc_chrdev_region(&devno, 0, 1, "srt");
g_srt_dev->dev_major = MAJOR(devno);
if (err < 0)
{
DEBUG_PRINT(LOG_TAG "alloc error=%d", err);
return -1;
}
cdev_init(&g_srt_dev->cdev, &srt_fops);
g_srt_dev->cdev.owner = THIS_MODULE;
err = cdev_add(&g_srt_dev->cdev, devno, 1);
if (err)
{
DEBUG_PRINT(LOG_TAG "cdev add=%d, error=%d", devno, err);
return -1;
}
g_srt_dev->pClass = class_create(THIS_MODULE, "srt_class");
if (IS_ERR(g_srt_dev->pClass))
{
DEBUG_PRINT(LOG_TAG "create class error\n");
return -1;
}
g_srt_dev->pClassDev = device_create(g_srt_dev->pClass, NULL, devno, NULL, "srt_dev");
if (IS_ERR(g_srt_dev->pClassDev))
{
DEBUG_PRINT(LOG_TAG "create class dev error\n");
return -1;
}
DEBUG_PRINT(LOG_TAG "%s End\n", __func__);
return 0;
}
void srt_exit(void)
{
DEBUG_PRINT(LOG_TAG "%s\n", __func__);
cdev_del(&g_srt_dev->cdev);
device_destroy(g_srt_dev->pClass, MKDEV(g_srt_dev->dev_major, 0));
class_destroy(g_srt_dev->pClass);
unregister_chrdev_region(MKDEV(g_srt_dev->dev_major, 0), 1);
kfree(g_srt_dev);
g_srt_dev=0;
}
module_init(srt_init);
module_exit(srt_exit);
MODULE_AUTHOR("jie.yang <jie.yang@spreadtrum.com>");
MODULE_DESCRIPTION("SRT");
MODULE_LICENSE("GPL");
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