1. 根目录:
2. arch
3. arm
4. mach-mxs
5. include
6. mach
7. clkdev.h

#ifndef __MACH_MXS_CLKDEV_H__
#define __MACH_MXS_CLKDEV_H__

#define __clk_get(clk) ({ 1; })
#define __clk_put(clk) do { } while (0)

#endif