1. 根目录:
2. drivers
3. staging
4. sm750fb
5. ddk750_chip.h

#ifndef DDK750_CHIP_H__
#define DDK750_CHIP_H__
#define DEFAULT_INPUT_CLOCK 14318181 /* Default reference clock */
#ifndef SM750LE_REVISION_ID
#define SM750LE_REVISION_ID ((unsigned char)0xfe)
#endif

#include <linux/io.h>

/* This is all the chips recognized by this library */
typedef enum _logical_chip_type_t
{
    SM_UNKNOWN,
    SM718,
    SM750,
    SM750LE,
}
logical_chip_type_t;


typedef enum _clock_type_t
{
	MXCLK_PLL,
	PRIMARY_PLL,
	SECONDARY_PLL,
	VGA0_PLL,
	VGA1_PLL,
}
clock_type_t;

typedef struct _pll_value_t
{
    clock_type_t clockType;
    unsigned long inputFreq; /* Input clock frequency to the PLL */

    /* Use this when clockType = PANEL_PLL */
    unsigned long M;
    unsigned long N;
    unsigned long OD;
    unsigned long POD;
}
pll_value_t;

/* input struct to initChipParam() function */
typedef struct _initchip_param_t
{
    unsigned short powerMode;    /* Use power mode 0 or 1 */
    unsigned short chipClock;    /* Speed of main chip clock in MHz unit
                                    0 = keep the current clock setting
                                    Others = the new main chip clock
                                  */
    unsigned short memClock;     /* Speed of memory clock in MHz unit
                                    0 = keep the current clock setting
                                    Others = the new memory clock
                                  */
    unsigned short masterClock;  /* Speed of master clock in MHz unit
                                    0 = keep the current clock setting
                                    Others = the new master clock
                                  */
    unsigned short setAllEngOff; /* 0 = leave all engine state untouched.
                                    1 = make sure they are off: 2D, Overlay,
                                    video alpha, alpha, hardware cursors
                                 */
    unsigned char resetMemory;   /* 0 = Do not reset the memory controller
                                    1 = Reset the memory controller
                                  */

    /* More initialization parameter can be added if needed */
}
initchip_param_t;


logical_chip_type_t getChipType(void);
unsigned int calcPllValue(unsigned int request,pll_value_t *pll);
unsigned int calcPllValue2(unsigned int,pll_value_t *);
unsigned int formatPllReg(pll_value_t *pPLL);
void ddk750_set_mmio(void __iomem *,unsigned short,char);
unsigned int ddk750_getVMSize(void);
int ddk750_initHw(initchip_param_t *);
unsigned int getPllValue(clock_type_t clockType, pll_value_t *pPLL);
unsigned int getChipClock(void);
void setChipClock(unsigned int);
void setMemoryClock(unsigned int frequency);
void setMasterClock(unsigned int frequency);


#endif