mfp.h

linux 内核源代码

#define MFPR_ALT_OFFSET		0
#define MFPR_ERE_OFFSET		4
#define MFPR_EFE_OFFSET		5
#define MFPR_EC_OFFSET		6
#define MFPR_SON_OFFSET		7
#define MFPR_SD_OFFSET		8
#define MFPR_SS_OFFSET		9
#define MFPR_DRV_OFFSET		10
#define MFPR_PD_OFFSET		13
#define MFPR_PU_OFFSET		14
#define MFPR_PS_OFFSET		15

#define MFPR(af, drv, rdh, lpm, edge) \
	(((af) & 0x7) | (((drv) & 0x7) << 10) |\
	 (((rdh) & 0x1) << 9) |\
	 (((lpm) & 0x3) << 7) |\
	 (((lpm) & 0x4) << 12)|\
	 (((lpm) & 0x8) << 10)|\
	 ((!(edge)) << 6) |\
	 (((edge) & 0x1) << 5) |\
	 (((edge) & 0x2) << 3))

/*
 * a possible MFP configuration is represented by a 32-bit integer
 * bit  0..15 - MFPR value (16-bit)
 * bit 16..31 - mfp pin index (used to obtain the MFPR offset)
 *
 * to facilitate the definition, the following macros are provided
 *
 * MFPR_DEFAULT - default MFPR value, with
 * 		  alternate function = 0,
 * 		  drive strength = fast 1mA (MFP_DS01X)
 * 		  low power mode = default
 * 		  release dalay hold = false (RDH bit)
 * 		  edge detection = none
 *
 * MFP_CFG	- default MFPR value with alternate function
 * MFP_CFG_DRV	- default MFPR value with alternate function and
 * 		  pin drive strength
 * MFP_CFG_LPM	- default MFPR value with alternate function and
 * 		  low power mode
 * MFP_CFG_X	- default MFPR value with alternate function,
 * 		  pin drive strength and low power mode
 *
 * use
 *
 * MFP_CFG_PIN	- to get the MFP pin index
 * MFP_CFG_VAL	- to get the corresponding MFPR value
 */

typedef uint32_t mfp_cfg_t;

#define MFP_CFG_PIN(mfp_cfg)	(((mfp_cfg) >> 16) & 0xffff)
#define MFP_CFG_VAL(mfp_cfg)	((mfp_cfg) & 0xffff)

/*
 * MFP register defaults to
 *   drive strength fast 3mA (010'b)
 *   edge detection logic disabled
 *   alternate function 0
 */
#define MFPR_DEFAULT	(0x0840)

#define MFP_CFG(pin, af)		\
	((MFP_PIN_##pin << 16) | MFPR_DEFAULT | (MFP_##af))

#define MFP_CFG_DRV(pin, af, drv)	\
	((MFP_PIN_##pin << 16) | (MFPR_DEFAULT & ~MFPR_DRV_MASK) |\
	 ((MFP_##drv) << 10) | (MFP_##af))

#define MFP_CFG_LPM(pin, af, lpm)	\
	((MFP_PIN_##pin << 16) | (MFPR_DEFAULT & ~MFPR_LPM_MASK) |\
	 (((MFP_LPM_##lpm) & 0x3) << 7)  |\
	 (((MFP_LPM_##lpm) & 0x4) << 12) |\
	 (((MFP_LPM_##lpm) & 0x8) << 10) |\
	 (MFP_##af))

#define MFP_CFG_X(pin, af, drv, lpm)	\
	((MFP_PIN_##pin << 16) |\
	 (MFPR_DEFAULT & ~(MFPR_DRV_MASK | MFPR_LPM_MASK)) |\
	 ((MFP_##drv) << 10) | (MFP_##af) |\
	 (((MFP_LPM_##lpm) & 0x3) << 7)  |\
	 (((MFP_LPM_##lpm) & 0x4) << 12) |\
	 (((MFP_LPM_##lpm) & 0x8) << 10))

/* common MFP configurations - processor specific ones defined
 * in mfp-pxa3xx.h
 */
#define GPIO0_GPIO		MFP_CFG(GPIO0, AF0)
#define GPIO1_GPIO		MFP_CFG(GPIO1, AF0)
#define GPIO2_GPIO		MFP_CFG(GPIO2, AF0)
#define GPIO3_GPIO		MFP_CFG(GPIO3, AF0)
#define GPIO4_GPIO		MFP_CFG(GPIO4, AF0)
#define GPIO5_GPIO		MFP_CFG(GPIO5, AF0)
#define GPIO6_GPIO		MFP_CFG(GPIO6, AF0)
#define GPIO7_GPIO		MFP_CFG(GPIO7, AF0)
#define GPIO8_GPIO		MFP_CFG(GPIO8, AF0)
#define GPIO9_GPIO		MFP_CFG(GPIO9, AF0)
#define GPIO10_GPIO		MFP_CFG(GPIO10, AF0)
#define GPIO11_GPIO		MFP_CFG(GPIO11, AF0)
#define GPIO12_GPIO		MFP_CFG(GPIO12, AF0)
#define GPIO13_GPIO		MFP_CFG(GPIO13, AF0)
#define GPIO14_GPIO		MFP_CFG(GPIO14, AF0)
#define GPIO15_GPIO		MFP_CFG(GPIO15, AF0)
#define GPIO16_GPIO		MFP_CFG(GPIO16, AF0)
#define GPIO17_GPIO		MFP_CFG(GPIO17, AF0)
#define GPIO18_GPIO		MFP_CFG(GPIO18, AF0)
#define GPIO19_GPIO		MFP_CFG(GPIO19, AF0)
#define GPIO20_GPIO		MFP_CFG(GPIO20, AF0)
#define GPIO21_GPIO		MFP_CFG(GPIO21, AF0)
#define GPIO22_GPIO		MFP_CFG(GPIO22, AF0)
#define GPIO23_GPIO		MFP_CFG(GPIO23, AF0)
#define GPIO24_GPIO		MFP_CFG(GPIO24, AF0)
#define GPIO25_GPIO		MFP_CFG(GPIO25, AF0)
#define GPIO26_GPIO		MFP_CFG(GPIO26, AF0)
#define GPIO27_GPIO		MFP_CFG(GPIO27, AF0)
#define GPIO28_GPIO		MFP_CFG(GPIO28, AF0)
#define GPIO29_GPIO		MFP_CFG(GPIO29, AF0)
#define GPIO30_GPIO		MFP_CFG(GPIO30, AF0)
#define GPIO31_GPIO		MFP_CFG(GPIO31, AF0)
#define GPIO32_GPIO		MFP_CFG(GPIO32, AF0)
#define GPIO33_GPIO		MFP_CFG(GPIO33, AF0)
#define GPIO34_GPIO		MFP_CFG(GPIO34, AF0)
#define GPIO35_GPIO		MFP_CFG(GPIO35, AF0)
#define GPIO36_GPIO		MFP_CFG(GPIO36, AF0)
#define GPIO37_GPIO		MFP_CFG(GPIO37, AF0)
#define GPIO38_GPIO		MFP_CFG(GPIO38, AF0)
#define GPIO39_GPIO		MFP_CFG(GPIO39, AF0)
#define GPIO40_GPIO		MFP_CFG(GPIO40, AF0)
#define GPIO41_GPIO		MFP_CFG(GPIO41, AF0)
#define GPIO42_GPIO		MFP_CFG(GPIO42, AF0)
#define GPIO43_GPIO		MFP_CFG(GPIO43, AF0)
#define GPIO44_GPIO		MFP_CFG(GPIO44, AF0)
#define GPIO45_GPIO		MFP_CFG(GPIO45, AF0)

#define GPIO47_GPIO		MFP_CFG(GPIO47, AF0)
#define GPIO48_GPIO		MFP_CFG(GPIO48, AF0)

#define GPIO53_GPIO		MFP_CFG(GPIO53, AF0)
#define GPIO54_GPIO		MFP_CFG(GPIO54, AF0)
#define GPIO55_GPIO		MFP_CFG(GPIO55, AF0)

#define GPIO57_GPIO		MFP_CFG(GPIO57, AF0)

#define GPIO63_GPIO		MFP_CFG(GPIO63, AF0)
#define GPIO64_GPIO		MFP_CFG(GPIO64, AF0)
#define GPIO65_GPIO		MFP_CFG(GPIO65, AF0)
#define GPIO66_GPIO		MFP_CFG(GPIO66, AF0)
#define GPIO67_GPIO		MFP_CFG(GPIO67, AF0)
#define GPIO68_GPIO		MFP_CFG(GPIO68, AF0)
#define GPIO69_GPIO		MFP_CFG(GPIO69, AF0)
#define GPIO70_GPIO		MFP_CFG(GPIO70, AF0)
#define GPIO71_GPIO		MFP_CFG(GPIO71, AF0)
#define GPIO72_GPIO		MFP_CFG(GPIO72, AF0)
#define GPIO73_GPIO		MFP_CFG(GPIO73, AF0)
#define GPIO74_GPIO		MFP_CFG(GPIO74, AF0)
#define GPIO75_GPIO		MFP_CFG(GPIO75, AF0)
#define GPIO76_GPIO		MFP_CFG(GPIO76, AF0)
#define GPIO77_GPIO		MFP_CFG(GPIO77, AF0)
#define GPIO78_GPIO		MFP_CFG(GPIO78, AF0)
#define GPIO79_GPIO		MFP_CFG(GPIO79, AF0)
#define GPIO80_GPIO		MFP_CFG(GPIO80, AF0)
#define GPIO81_GPIO		MFP_CFG(GPIO81, AF0)
#define GPIO82_GPIO		MFP_CFG(GPIO82, AF0)
#define GPIO83_GPIO		MFP_CFG(GPIO83, AF0)
#define GPIO84_GPIO		MFP_CFG(GPIO84, AF0)
#define GPIO85_GPIO		MFP_CFG(GPIO85, AF0)
#define GPIO86_GPIO		MFP_CFG(GPIO86, AF0)
#define GPIO87_GPIO		MFP_CFG(GPIO87, AF0)
#define GPIO88_GPIO		MFP_CFG(GPIO88, AF0)
#define GPIO89_GPIO		MFP_CFG(GPIO89, AF0)
#define GPIO90_GPIO		MFP_CFG(GPIO90, AF0)
#define GPIO91_GPIO		MFP_CFG(GPIO91, AF0)
#define GPIO92_GPIO		MFP_CFG(GPIO92, AF0)
#define GPIO93_GPIO		MFP_CFG(GPIO93, AF0)
#define GPIO94_GPIO		MFP_CFG(GPIO94, AF0)
#define GPIO95_GPIO		MFP_CFG(GPIO95, AF0)
#define GPIO96_GPIO		MFP_CFG(GPIO96, AF0)
#define GPIO97_GPIO		MFP_CFG(GPIO97, AF0)
#define GPIO98_GPIO		MFP_CFG(GPIO98, AF0)
#define GPIO99_GPIO		MFP_CFG(GPIO99, AF0)
#define GPIO100_GPIO		MFP_CFG(GPIO100, AF0)
#define GPIO101_GPIO		MFP_CFG(GPIO101, AF0)
#define GPIO102_GPIO		MFP_CFG(GPIO102, AF0)
#define GPIO103_GPIO		MFP_CFG(GPIO103, AF0)
#define GPIO104_GPIO		MFP_CFG(GPIO104, AF0)
#define GPIO105_GPIO		MFP_CFG(GPIO105, AF0)
#define GPIO106_GPIO		MFP_CFG(GPIO106, AF0)
#define GPIO107_GPIO		MFP_CFG(GPIO107, AF0)
#define GPIO108_GPIO		MFP_CFG(GPIO108, AF0)
#define GPIO109_GPIO		MFP_CFG(GPIO109, AF0)
#define GPIO110_GPIO		MFP_CFG(GPIO110, AF0)
#define GPIO111_GPIO		MFP_CFG(GPIO111, AF0)
#define GPIO112_GPIO		MFP_CFG(GPIO112, AF0)
#define GPIO113_GPIO		MFP_CFG(GPIO113, AF0)
#define GPIO114_GPIO		MFP_CFG(GPIO114, AF0)
#define GPIO115_GPIO		MFP_CFG(GPIO115, AF0)
#define GPIO116_GPIO		MFP_CFG(GPIO116, AF0)
#define GPIO117_GPIO		MFP_CFG(GPIO117, AF0)
#define GPIO118_GPIO		MFP_CFG(GPIO118, AF0)
#define GPIO119_GPIO		MFP_CFG(GPIO119, AF0)
#define GPIO120_GPIO		MFP_CFG(GPIO120, AF0)
#define GPIO121_GPIO		MFP_CFG(GPIO121, AF0)
#define GPIO122_GPIO		MFP_CFG(GPIO122, AF0)
#define GPIO123_GPIO		MFP_CFG(GPIO123, AF0)
#define GPIO124_GPIO		MFP_CFG(GPIO124, AF0)
#define GPIO125_GPIO		MFP_CFG(GPIO125, AF0)
#define GPIO126_GPIO		MFP_CFG(GPIO126, AF0)
#define GPIO127_GPIO		MFP_CFG(GPIO127, AF0)

#define GPIO0_2_GPIO		MFP_CFG(GPIO0_2, AF0)
#define GPIO1_2_GPIO		MFP_CFG(GPIO1_2, AF0)
#define GPIO2_2_GPIO		MFP_CFG(GPIO2_2, AF0)
#define GPIO3_2_GPIO		MFP_CFG(GPIO3_2, AF0)
#define GPIO4_2_GPIO		MFP_CFG(GPIO4_2, AF0)
#define GPIO5_2_GPIO		MFP_CFG(GPIO5_2, AF0)
#define GPIO6_2_GPIO		MFP_CFG(GPIO6_2, AF0)

/*
 * each MFP pin will have a MFPR register, since the offset of the
 * register varies between processors, the processor specific code
 * should initialize the pin offsets by pxa3xx_mfp_init_addr()
 *
 * pxa3xx_mfp_init_addr - accepts a table of "pxa3xx_mfp_addr_map"
 * structure, which represents a range of MFP pins from "start" to
 * "end", with the offset begining at "offset", to define a single
 * pin, let "end" = -1
 *
 * use
 *
 * MFP_ADDR_X() to define a range of pins
 * MFP_ADDR()   to define a single pin
 * MFP_ADDR_END to signal the end of pin offset definitions
 */
struct pxa3xx_mfp_addr_map {
	unsigned int	start;
	unsigned int	end;
	unsigned long	offset;
};

#define MFP_ADDR_X(start, end, offset) \
	{ MFP_PIN_##start, MFP_PIN_##end, offset }

#define MFP_ADDR(pin, offset) \
	{ MFP_PIN_##pin, -1, offset }

#define MFP_ADDR_END	{ MFP_PIN_INVALID, 0 }

struct pxa3xx_mfp_pin {
	unsigned long	mfpr_off;	/* MFPRxx register offset */
	unsigned long	mfpr_val;	/* MFPRxx register value */
};

/*
 * pxa3xx_mfp_read()/pxa3xx_mfp_write() - for direct read/write access
 * to the MFPR register
 */
unsigned long pxa3xx_mfp_read(int mfp);
void pxa3xx_mfp_write(int mfp, unsigned long mfpr_val);

/*
 * pxa3xx_mfp_set_afds - set MFP alternate function and drive strength
 * pxa3xx_mfp_set_rdh  - set MFP release delay hold on/off
 * pxa3xx_mfp_set_lpm  - set MFP low power mode state
 * pxa3xx_mfp_set_edge - set MFP edge detection in low power mode
 *
 * use these functions to override/change the default configuration
 * done by pxa3xx_mfp_set_config(s)
 */
void pxa3xx_mfp_set_afds(int mfp, int af, int ds);
void pxa3xx_mfp_set_rdh(int mfp, int rdh);
void pxa3xx_mfp_set_lpm(int mfp, int lpm);
void pxa3xx_mfp_set_edge(int mfp, int edge);

/*
 * pxa3xx_mfp_config - configure the MFPR registers
 *
 * used by board specific initialization code
 */
void pxa3xx_mfp_config(mfp_cfg_t *mfp_cfgs, int num);

/*
 * pxa3xx_mfp_init_addr() - initialize the mapping between mfp pin
 * index and MFPR register offset
 *
 * used by processor specific code
 */
void __init pxa3xx_mfp_init_addr(struct pxa3xx_mfp_addr_map *);
void __init pxa3xx_init_mfp(void);

#endif /* __ASM_ARCH_MFP_H */