freebsd-skq/sys/dev/nand/nfc_at91.h
Warner Losh 90a9a51875 Generalize AT91 NAND support a bit. Be more flexible about ALE and CLE
address line assignment. Provide convenince function to set these things.
2014-01-19 17:53:51 +00:00

51 lines
2.0 KiB
C

/*-
* Copyright (C) 2014 Warner Losh.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* Atmel at91-family integrated NAND controller driver.
*
* Interface to board setup code to set parameters.
*/
#ifndef DEV_NAND_NFC_AT91_H
#define DEV_NAND_NFC_AT91_H 1
struct at91_nand_params
{
uint32_t ale; /* Address for ALE (address) NAND cycles */
uint32_t cle; /* Address for CLE (command) NAND cycles */
uint32_t width; /* 8 or 16 bits (specify in bits) */
uint32_t cs; /* Chip Select NAND is connected to */
uint32_t rnb_pin; /* GPIO pin # for Read/notBusy */
uint32_t nce_pin; /* GPIO pin # for CE (active low) */
};
void at91_enable_nand(const struct at91_nand_params *);
#endif /* DEV_NAND_NFC_AT91_H */