/************************************************************************************
* dm320/dm320_gio.h
*
* Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
************************************************************************************/
#ifndef __DM320_DM320GIO_H
#define __DM320_DM320GIO_H
/************************************************************************************
* Included Files
************************************************************************************/
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* General I/O Registers */
#define DM320_GIO_DIR0 (DM320_PERIPHERALS_VADDR + 0x0580) /* GIO Direction Register 0 */
#define DM320_GIO_DIR1 (DM320_PERIPHERALS_VADDR + 0x0582) /* GIO Direction Register 1 */
#define DM320_GIO_DIR2 (DM320_PERIPHERALS_VADDR + 0x0584) /* GIO Direction Register 2 */
#define DM320_GIO_INV0 (DM320_PERIPHERALS_VADDR + 0x0586) /* GIO Inversion Register 0 */
#define DM320_GIO_INV1 (DM320_PERIPHERALS_VADDR + 0x0588) /* GIO Inversion Register 1 */
#define DM320_GIO_INV2 (DM320_PERIPHERALS_VADDR + 0x058A) /* GIO Inversion Register 2 */
#define DM320_GIO_BITSET0 (DM320_PERIPHERALS_VADDR + 0x058C) /* GIO Bit Set Register 0 */
#define DM320_GIO_BITSET1 (DM320_PERIPHERALS_VADDR + 0x058E) /* GIO Bit Set Register 1 */
#define DM320_GIO_BITSET2 (DM320_PERIPHERALS_VADDR + 0x0590) /* GIO Bit Set Register 2 */
#define DM320_GIO_BITCLR0 (DM320_PERIPHERALS_VADDR + 0x0592) /* GIO Bit Clear Register 0 */
#define DM320_GIO_BITCLR1 (DM320_PERIPHERALS_VADDR + 0x0594) /* GIO Bit Clear Register 1 */
#define DM320_GIO_BITCLR2 (DM320_PERIPHERALS_VADDR + 0x0596) /* GIO Bit Clear Register 2 */
#define DM320_GIO_IRQPORT (DM320_PERIPHERALS_VADDR + 0x0598) /* GIO IRQ Port Setting Register */
#define DM320_GIO_IRQEDGE (DM320_PERIPHERALS_VADDR + 0x059A) /* GIO IRQ Edge Setting Register */
#define DM320_GIO_CHAT0 (DM320_PERIPHERALS_VADDR + 0x059C) /* GIO Chatter Setting Register 0 */
#define DM320_GIO_CHAT1 (DM320_PERIPHERALS_VADDR + 0x059E) /* GIO Chatter Setting Register 1 */
#define DM320_GIO_CHAT2 (DM320_PERIPHERALS_VADDR + 0x05A0) /* GIO Chatter Setting Register 2 */
#define DM320_GIO_NCHAT (DM320_PERIPHERALS_VADDR + 0x05A2) /* GIO Chatter Value Register */
#define DM320_GIO_FSEL0 (DM320_PERIPHERALS_VADDR + 0x05A4) /* GIO Function Select Register 0 */
#define DM320_GIO_FSEL1 (DM320_PERIPHERALS_VADDR + 0x05A6) /* GIO Function Select Register 1 */
#define DM320_GIO_FSEL2 (DM320_PERIPHERALS_VADDR + 0x05A8) /* GIO Function Select Register 2 */
#define DM320_GIO_FSEL3 (DM320_PERIPHERALS_VADDR + 0x05AA) /* GIO Function Select Register 3 */
/* Macros for GIO access */
#define _GIO_READ_REG(pin, reg0, reg1, reg2, bval) \
do { \
register uint32_t _reg; register int _pin; \
if ((pin) < 16) { _reg = (reg0); _pin = (pin); } \
else if ((pin) < 32) { _reg = (reg1); _pin = ((pin) - 16); } \
else { _reg = (reg2); _pin = ((pin) - 32); } \
bval = ((getreg16(_reg) & (1<<_pin)) != 0); \
}
#define _GIO_SET_REG(pin, reg0, reg1, reg2) \
do { \
register uint32_t _reg; register int _pin; \
if ((pin) < 16) { _reg = (reg0); _pin = (pin); } \
else if ((pin) < 32) { _reg = (reg1); _pin = ((pin) - 16); } \
else { _reg = (reg2); _pin = ((pin) - 32); } \
putreg16((getreg16(_reg) | (1 << _pin)), _reg); \
} while (0)
#define _GIO_CLEAR_REG(pin, reg0, reg1, reg2) \
do { \
register uint32_t _reg; register int _pin; \
if ((pin) < 16) { _reg = (reg0); _pin = (pin); } \
else if ((pin) < 32) { _reg = (reg1); _pin = ((pin) - 16); } \
else { _reg = (reg2); _pin = ((pin) - 32); } \
putreg16((getreg16(_reg) & ~(1 << _pin)), _reg); \
} while (0)
/* Select GIO input or output */
#define GIO_INPUT(pin) \
_GIO_SET_REG((pin), DM320_GIO_DIR0, DM320_GIO_DIR1, DM320_GIO_DIR2)
#define GIO_OUTPUT(pin) \
_GIO_CLEAR_REG((pin), DM320_GIO_DIR0, DM320_GIO_DIR1, DM320_GIO_DIR2)
/* Select inverted or non-inverted GIO */
#define GIO_INVERTED(pin) \
_GIO_SET_REG((pin), DM320_GIO_INV0, DM320_GIO_INV1, DM320_GIO_INV2)
#define GIO_NONINVERTED(pin) \
_GIO_CLEAR_REG((pin), DM320_GIO_INV0, DM320_GIO_INV1, DM320_GIO_INV2)
/* Set and clear outputs */
#define GIO_SET_OUTPUT(pin) \
_GIO_SET_REG((pin), DM320_GIO_BITSET0, DM320_GIO_BITSET1, DM320_GIO_BITSET2)
#define GIO_CLEAR_OUTPUT(pin) \
_GIO_SET_REG((pin), DM320_GIO_BITCLR0, DM320_GIO_BITCLR1, DM320_GIO_BITCLR2)
/* Read input */
#define GIO_READ_INPUT(pin, bval) \
_GIO_READ_REG((pin), DM320_GIO_BITSET0, DM320_GIO_BITSET1, DM320_GIO_BITSET2, (bval))
/* Configure GIO pins */
#define _GIO_SET_CONFIG(reg, sh, val) \
putreg16(((getreg16(reg) & ~(3 << sh)) | (val << sh)), (reg))
#define GIO_CONFIGURE(pin, val) \
do {\
if ((pin) < 10) _GIO_SET_CONFIG(DM320_GIO_FSEL0, 0, (val)); \
else if ((pin) < 17) _GIO_SET_CONFIG(DM320_GIO_FSEL0, 2*((pin)-9), (val)); \
else if ((pin) < 25) _GIO_SET_CONFIG(DM320_GIO_FSEL1, 2*((pin)-17), (val)); \
else if ((pin) < 33) _GIO_SET_CONFIG(DM320_GIO_FSEL2, 2*((pin)-25), (val)); \
else _GIO_SET_CONFIG(DM320_GIO_FSEL3, 2*((pin)-33), (val)); \
}
/* Configure GIO interrupts (pins 1-15) */
#define GIO_INTERRUPT(pin) \
if (pin < 16) putreg16((getreg16(DM320_GIO_IRQPORT) | (1<<(pin))), DM320_GIO_IRQPORT)
#define GIO_NONINTERRUPT(pin) \
if (pin < 16) putreg16((getreg16(DM320_GIO_IRQPORT) & ~(1<<(pin))), DM320_GIO_IRQPORT)
#define GIO_FALLINGEDGE(pin) \
if (pin < 16) { \
putreg16((getreg16(DM320_GIO_IRQEDGE) & ~(1<<(pin))), DM320_GIO_IRQEDGE) \
putreg16((getreg16(DM320_GIO_INV0) & ~(1<<(pin))), DM320_GIO_INV0); \
}
#define GIO_RISINGEDGE(pin) \
if (pin < 16) { \
putreg16((getreg16(DM320_GIO_IRQEDGE) & ~(1<<(pin))), DM320_GIO_IRQEDGE); \
putreg16((getreg16(DM320_GIO_INV0) | (1<<(pin))), DM320_GIO_INV0); \
}
#define GIO_BOTHEDGES(pin) \
if (pin < 16) { \
putreg16((getreg16(DM320_GIO_IRQEDGE) | (1<<(pin))), DM320_GIO_IRQEDGE); \
putreg16((getreg16(DM320_GIO_INV0) & ~(1<<(pin))), DM320_GIO_INV0); \
}
/************************************************************************************
* Inline Functions
************************************************************************************/
#ifndef __ASSEMBLY__
#endif
#endif /* __DM320_DM320_GIO_H */
