[mirror_ubuntu-zesty-kernel.git] / include / asm-avr32 / arch-at32ap / smc.h

/*
 * Static Memory Controller for AT32 chips
 *
 * Copyright (C) 2006 Atmel Corporation
 *
 * Inspired by the OMAP2 General-Purpose Memory Controller interface
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef __ARCH_AT32AP_SMC_H
#define __ARCH_AT32AP_SMC_H

/*
 * All timing parameters are in nanoseconds.
 */
struct smc_config {
	/* Delay from address valid to assertion of given strobe */
	u16		ncs_read_setup;
	u16		nrd_setup;
	u16		ncs_write_setup;
	u16		nwe_setup;

	/* Pulse length of given strobe */
	u16		ncs_read_pulse;
	u16		nrd_pulse;
	u16		ncs_write_pulse;
	u16		nwe_pulse;

	/* Total cycle length of given operation */
	u16		read_cycle;
	u16		write_cycle;

	/* Bus width in bytes */
	u8		bus_width;

	/*
	 * 0: Data is sampled on rising edge of NCS
	 * 1: Data is sampled on rising edge of NRD
	 */
	unsigned int	nrd_controlled:1;

	/*
	 * 0: Data is driven on falling edge of NCS
	 * 1: Data is driven on falling edge of NWR
	 */
	unsigned int	nwe_controlled:1;

	/*
	 * 0: Byte select access type
	 * 1: Byte write access type
	 */
	unsigned int	byte_write:1;
};

extern int smc_set_configuration(int cs, const struct smc_config *config);
extern struct smc_config *smc_get_configuration(int cs);

#endif /* __ARCH_AT32AP_SMC_H */
Commit	Line	Data
bc157b75 HS	1	/*
	2	* Static Memory Controller for AT32 chips
	3	*
	4	* Copyright (C) 2006 Atmel Corporation
	5	*
	6	* Inspired by the OMAP2 General-Purpose Memory Controller interface
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*/
	12	#ifndef __ARCH_AT32AP_SMC_H
	13	#define __ARCH_AT32AP_SMC_H
	14
	15	/*
	16	* All timing parameters are in nanoseconds.
	17	*/
	18	struct smc_config {
	19	/* Delay from address valid to assertion of given strobe */
	20	u16 ncs_read_setup;
	21	u16 nrd_setup;
	22	u16 ncs_write_setup;
	23	u16 nwe_setup;
	24
	25	/* Pulse length of given strobe */
	26	u16 ncs_read_pulse;
	27	u16 nrd_pulse;
	28	u16 ncs_write_pulse;
	29	u16 nwe_pulse;
	30
	31	/* Total cycle length of given operation */
	32	u16 read_cycle;
	33	u16 write_cycle;
	34
	35	/* Bus width in bytes */
	36	u8 bus_width;
	37
	38	/*
	39	* 0: Data is sampled on rising edge of NCS
	40	* 1: Data is sampled on rising edge of NRD
	41	*/
	42	unsigned int nrd_controlled:1;
	43
	44	/*
	45	* 0: Data is driven on falling edge of NCS
	46	* 1: Data is driven on falling edge of NWR
	47	*/
	48	unsigned int nwe_controlled:1;
	49
	50	/*
	51	* 0: Byte select access type
	52	* 1: Byte write access type
	53	*/
	54	unsigned int byte_write:1;
	55	};
	56
	57	extern int smc_set_configuration(int cs, const struct smc_config *config);
	58	extern struct smc_config *smc_get_configuration(int cs);
	59
	60	#endif /* __ARCH_AT32AP_SMC_H */