加载Linux驱动模块读寄存器值

#include <linux/module.h> #include <linux/init.h> #include <asm/io.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR("David cheng"); MODULE_DESCRIPTION("DM368 i2c register read module"); MODULE_ALIAS("a simple module"); #define I2C_BASE 0x01c71000 #define I2C_SIZE 100 static int hello_init(void) { void __iomem *pI2cBase; int i = 0; unsigned int muxval; pI2cBase = ioremap(I2C_BASE, I2C_SIZE); printk("before read \n"); for (i = 1; i < 20; i++) { muxval = __raw_readl(pI2cBase + 0x04 * i); printk("read completely value: 0x%.8x \n", muxval); } return 0; } static int hello_exit(void) { printk("Goodbye, cruel world\n"); return 0; } module_init(hello_init); module_exit(hello_exit);