#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#define?DEVICE??????????“i3c“
#define?DATA_LEN????????6

int?major?=?233;
int?minor?=?0;
void?*R_GPECON*R_GPEUP*R_IICCON*R_IICSTAT*R_IICADD*R_IICDS;

int?IIC_open（struct?inode?*?struct?file?*）;
int?IIC_release（struct?inode?*?struct?file?*）;
ssize_t?IIC_read（struct?file?*file?char*?buf?size_t?count?loff_t?*f_pos）;
unsigned?int?IIC_poll（struct?file*?file?poll_table*?wait）;
irqreturn_t?interrupt_handle（?int?irq?void*?dev_id?struct?pt_regs*?regs?）;

static?void?address_map（void）
{
#define??IIC_base???????（0x54000000）
#define??IIC_GPECON?????（?IIC_base?+?0x40?）
#define??IIC_GPEUP??????（?IIC_base?+?0x48?）
#define??IIC_CON????????（?IIC_base?+?0x0?）
#define??IIC_STAT???????（?IIC_base?+?0x4?）
#define??IIC_ADDR???????（?IIC_base?+?0x8?）
#define??IIC_DS?????????（?IIC_base?+?0xC?）
????????R_GPECON??=?ioremap（IIC_GPECON4）;
????????R_GPEUP???=?ioremap（IIC_GPEUP?4）;
????????R_IICCON??=?ioremap（IIC_CON???4）;
????????R_IICSTAT?=?ioremap（IIC_STAT??4）;
????????R_IICADD??=?ioremap（IIC_ADDR??4）;
????????R_IICDS???=?ioremap（IIC_DS????4）;
}

static?void?address_unmap（void）
{
????????iounmap（?R_GPECON?）;
????????iounmap（?R_GPEUP?）;
????????iounmap（?R_IICCON?）;
????????iounmap（?R_IICSTAT?）;
????????iounmap（?R_IICADD?）;
????????iounmap（?R_IICDS?）;
}

static?struct?file_operations?fops?=?{
????????owner?:?????????THIS_MODULE
????????read:???????????IIC_read
????????open:???????????IIC_open
????????release:????????IIC_release
????????poll:???????????IIC_poll
};

struct?IIC_dev{
????????wait_queue_head_t?rq;???//?讀取等待隊列
????????uint8_t?*buffer;
????????uint32_t?size;
????????uint32_t?index;
????????struct?semaphore?sem;
????????struct?cdev?cdev;
};
struct?IIC_dev?*my_dev;

static?int?__init?IIC_init（void）
{
????????//?1.?分配主設備號
????????dev_t?devno?=?MKDEV（?major?minor?）;
????????int?ret?=?register_chrdev_region（?devno?1?DEVICE?）;
????????if（?ret?????????{
??????????printk（KERN_DEBUG?“register?major?number?failed?with?%d\n“?ret）;
??????????return?ret;
????????}
????????printk（KERN_DEBUG?“%s:register?major?number?OK\n“DEVICE）;

????????//?2.?注冊設備
????????my_dev?=?kmalloc（sizeof（struct?IIC_dev）?GFP_KERNEL）;
????????memset（?my_dev?0?sizeof（struct?IIC_dev）?）;
????????cdev_init（?&my_dev->cdev?&fops?）;
????????my_dev->cdev.ops?=?&fops;
????????my_dev->cdev.owner?=?THIS_MODULE;
????????ret?=?cdev_add（?&my_dev->cdev?devno?1?）;
????????if（?ret?????????{
??????????printk（KERN_DEBUG?“register?device?failed?with?%d\n“?ret）;
??????????return?ret;
????????}
????????printk（KERN_DEBUG?“%s:register?device?OK\n“DEVICE）;

????????//?3.?分配本驅動要使用的內存
????????my_dev->index?=?0;
????????my