linux/arch/arm/mach-at91/include/mach/at91_pio.h
Nicolas Ferre 582d5fbd4e ARM: at91/pio: add new PIO3 features
This patch adds the support for new PIO controller found on some
at91sam SOCs.
- more peripheral multiplexing
- more features to configure on a PIO (pull-down, Schmitt trigger, debouncer)
- support for several IRQ triggering features (type and polarity)

Support for those new features are retrieved from the device tree
compatibility string.

Debugfs at91_gpio file is updated to monitor configuration.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-03-01 13:38:50 +01:00

75 lines
3.4 KiB
C

/*
* arch/arm/mach-at91/include/mach/at91_pio.h
*
* Copyright (C) 2005 Ivan Kokshaysky
* Copyright (C) SAN People
*
* Parallel I/O Controller (PIO) - System peripherals registers.
* Based on AT91RM9200 datasheet revision E.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef AT91_PIO_H
#define AT91_PIO_H
#define PIO_PER 0x00 /* Enable Register */
#define PIO_PDR 0x04 /* Disable Register */
#define PIO_PSR 0x08 /* Status Register */
#define PIO_OER 0x10 /* Output Enable Register */
#define PIO_ODR 0x14 /* Output Disable Register */
#define PIO_OSR 0x18 /* Output Status Register */
#define PIO_IFER 0x20 /* Glitch Input Filter Enable */
#define PIO_IFDR 0x24 /* Glitch Input Filter Disable */
#define PIO_IFSR 0x28 /* Glitch Input Filter Status */
#define PIO_SODR 0x30 /* Set Output Data Register */
#define PIO_CODR 0x34 /* Clear Output Data Register */
#define PIO_ODSR 0x38 /* Output Data Status Register */
#define PIO_PDSR 0x3c /* Pin Data Status Register */
#define PIO_IER 0x40 /* Interrupt Enable Register */
#define PIO_IDR 0x44 /* Interrupt Disable Register */
#define PIO_IMR 0x48 /* Interrupt Mask Register */
#define PIO_ISR 0x4c /* Interrupt Status Register */
#define PIO_MDER 0x50 /* Multi-driver Enable Register */
#define PIO_MDDR 0x54 /* Multi-driver Disable Register */
#define PIO_MDSR 0x58 /* Multi-driver Status Register */
#define PIO_PUDR 0x60 /* Pull-up Disable Register */
#define PIO_PUER 0x64 /* Pull-up Enable Register */
#define PIO_PUSR 0x68 /* Pull-up Status Register */
#define PIO_ASR 0x70 /* Peripheral A Select Register */
#define PIO_ABCDSR1 0x70 /* Peripheral ABCD Select Register 1 [some sam9 only] */
#define PIO_BSR 0x74 /* Peripheral B Select Register */
#define PIO_ABCDSR2 0x74 /* Peripheral ABCD Select Register 2 [some sam9 only] */
#define PIO_ABSR 0x78 /* AB Status Register */
#define PIO_IFSCDR 0x80 /* Input Filter Slow Clock Disable Register */
#define PIO_IFSCER 0x84 /* Input Filter Slow Clock Enable Register */
#define PIO_IFSCSR 0x88 /* Input Filter Slow Clock Status Register */
#define PIO_SCDR 0x8c /* Slow Clock Divider Debouncing Register */
#define PIO_SCDR_DIV (0x3fff << 0) /* Slow Clock Divider Mask */
#define PIO_PPDDR 0x90 /* Pad Pull-down Disable Register */
#define PIO_PPDER 0x94 /* Pad Pull-down Enable Register */
#define PIO_PPDSR 0x98 /* Pad Pull-down Status Register */
#define PIO_OWER 0xa0 /* Output Write Enable Register */
#define PIO_OWDR 0xa4 /* Output Write Disable Register */
#define PIO_OWSR 0xa8 /* Output Write Status Register */
#define PIO_AIMER 0xb0 /* Additional Interrupt Modes Enable Register */
#define PIO_AIMDR 0xb4 /* Additional Interrupt Modes Disable Register */
#define PIO_AIMMR 0xb8 /* Additional Interrupt Modes Mask Register */
#define PIO_ESR 0xc0 /* Edge Select Register */
#define PIO_LSR 0xc4 /* Level Select Register */
#define PIO_ELSR 0xc8 /* Edge/Level Status Register */
#define PIO_FELLSR 0xd0 /* Falling Edge/Low Level Select Register */
#define PIO_REHLSR 0xd4 /* Rising Edge/ High Level Select Register */
#define PIO_FRLHSR 0xd8 /* Fall/Rise - Low/High Status Register */
#define PIO_SCHMITT 0x100 /* Schmitt Trigger Register */
#define ABCDSR_PERIPH_A 0x0
#define ABCDSR_PERIPH_B 0x1
#define ABCDSR_PERIPH_C 0x2
#define ABCDSR_PERIPH_D 0x3
#endif