soc/pxa/mfp.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  *   Common Multi-Function Pin Definitions
7  * 2007-8-21: eric miao <eric.miao@marvell.com>
18 	MFP_PIN_INVALID = -1,
325  * a possible MFP configuration is represented by a 32-bit integer
327  * bit  0.. 9 - MFP Pin Number (1024 Pins Maximum)
328  * bit 10..12 - Alternate Function Selection
329  * bit 13..15 - Drive Strength
330  * bit 16..18 - Low Power Mode State
331  * bit 19..20 - Low Power Mode Edge Detection
332  * bit 21..22 - Run Mode Pull State
336  * MFP_CFG_DEFAULT - default MFP configuration value, with
339  * 		  low power mode = default
342  * MFP_CFG	- default MFPR value with alternate function
343  * MFP_CFG_DRV	- default MFPR value with alternate function and
344  * 		  pin drive strength
345  * MFP_CFG_LPM	- default MFPR value with alternate function and
346  * 		  low power mode
347  * MFP_CFG_X	- default MFPR value with alternate function,
348  * 		  pin drive strength and low power mode
405 #define MFP_CFG(pin, af)		\  argument
407 	 (MFP_PIN(MFP_PIN_##pin) | MFP_##af))
409 #define MFP_CFG_DRV(pin, af, drv)	\  argument
411 	 (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_##drv))
413 #define MFP_CFG_LPM(pin, af, lpm)	\  argument
415 	 (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_LPM_##lpm))
417 #define MFP_CFG_X(pin, af, drv, lpm)	\  argument
419 	 (MFP_PIN(MFP_PIN_##pin) | MFP_##af | MFP_##drv | MFP_LPM_##lpm))
423  * each MFP pin will have a MFPR register, since the offset of the
425  * should initialize the pin offsets by mfp_init()
427  * mfp_init_base() - accepts a virtual base for all MFPR registers and
430  * mfp_init_addr() - accepts a table of "mfp_addr_map" structure, which
432  * beginning at "offset", to define a single pin, let "end" = -1.
437  * MFP_ADDR()   to define a single pin
438  * MFP_ADDR_END to signal the end of pin offset definitions
449 #define MFP_ADDR(pin, offset) \  argument
450 	{ MFP_PIN_##pin, -1, offset }
458  * mfp_{read, write}()	- for direct read/write access to the MFPR register
459  * mfp_config()		- for configuring a group of MFPR registers
460  * mfp_config_lpm()	- configuring all low power MFPR registers for suspend
461  * mfp_config_run()	- configuring all run time  MFPR registers after resume