2 * linux/include/asm-arm/arch-at91rm9200/pio.h
4 * Copyright (c) 2003 SAN People
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
13 #ifndef __ASM_ARCH_PIO_H
14 #define __ASM_ARCH_PIO_H
16 #include <asm/arch/hardware.h>
18 static inline void AT91_CfgPIO_USART0(void) {
19 AT91_SYS->PIOA_PDR = AT91C_PA17_TXD0 | AT91C_PA18_RXD0
20 | AT91C_PA20_CTS0 | AT91C_PA21_RTS0;
23 static inline void AT91_CfgPIO_USART1(void) {
24 AT91_SYS->PIOB_PDR = AT91C_PB18_RI1 | AT91C_PB19_DTR1
25 | AT91C_PB20_TXD1 | AT91C_PB21_RXD1 | AT91C_PB23_DCD1
26 | AT91C_PB24_CTS1 | AT91C_PB25_DSR1 | AT91C_PB26_RTS1;
29 static inline void AT91_CfgPIO_USART2(void) {
30 AT91_SYS->PIOA_PDR = AT91C_PA22_RXD2 | AT91C_PA23_TXD2;
33 static inline void AT91_CfgPIO_USART3(void) {
34 AT91_SYS->PIOA_PDR = AT91C_PA5_TXD3 | AT91C_PA6_RXD3;
35 AT91_SYS->PIOA_BSR = AT91C_PA5_TXD3 | AT91C_PA6_RXD3;
38 static inline void AT91_CfgPIO_DBGU(void) {
39 AT91_SYS->PIOA_PDR = AT91C_PA31_DTXD | AT91C_PA30_DRXD;
43 * Configure Ethernet for RMII mode.
45 static inline void AT91_CfgPIO_EMAC_RMII(void) {
46 AT91_SYS->PIOA_PDR = AT91C_PA16_EMDIO | AT91C_PA15_EMDC | AT91C_PA14_ERXER | AT91C_PA13_ERX1
47 | AT91C_PA12_ERX0 | AT91C_PA11_ECRS_ECRSDV | AT91C_PA10_ETX1
48 | AT91C_PA9_ETX0 | AT91C_PA8_ETXEN | AT91C_PA7_ETXCK_EREFCK;
49 AT91_SYS->PIOB_PDR = AT91C_PB25_EF100 | AT91C_PB19_ERXCK;
50 AT91_SYS->PIOB_BSR = AT91C_PB25_EF100 | AT91C_PB19_ERXCK;
54 * Configure Ethernet for MII mode.
56 static inline void AT91_CfgPIO_EMAC_MII(void) {
57 AT91_SYS->PIOA_PDR = AT91C_PA16_EMDIO | AT91C_PA15_EMDC | AT91C_PA14_ERXER | AT91C_PA13_ERX1
58 | AT91C_PA12_ERX0 | AT91C_PA11_ECRS_ECRSDV | AT91C_PA10_ETX1
59 | AT91C_PA9_ETX0 | AT91C_PA8_ETXEN | AT91C_PA7_ETXCK_EREFCK;
60 AT91_SYS->PIOB_PDR = AT91C_PB25_EF100 | AT91C_PB19_ERXCK | AT91C_PB18_ECOL | AT91C_PB17_ERXDV
61 | AT91C_PB16_ERX3 | AT91C_PB15_ERX2 | AT91C_PB14_ETXER | AT91C_PB13_ETX3
63 AT91_SYS->PIOB_BSR = AT91C_PB25_EF100 | AT91C_PB19_ERXCK | AT91C_PB18_ECOL | AT91C_PB17_ERXDV
64 | AT91C_PB16_ERX3 | AT91C_PB15_ERX2 | AT91C_PB14_ETXER | AT91C_PB13_ETX3
69 * Enable the Two-Wire interface.
71 static inline void AT91_CfgPIO_TWI(void) {
72 AT91_SYS->PIOA_PDR = AT91C_PA25_TWD | AT91C_PA26_TWCK;
73 AT91_SYS->PIOA_ASR = AT91C_PA25_TWD | AT91C_PA26_TWCK;
77 * Enable the Serial Peripheral Interface.
79 static inline void AT91_CfgPIO_SPI(void) {
80 AT91_SYS->PIOA_PDR = AT91C_PA0_MISO | AT91C_PA1_MOSI | AT91C_PA2_SPCK;
83 static inline void AT91_CfgPIO_SPI_CS0(void) {
84 AT91_SYS->PIOA_PDR = AT91C_PA3_NPCS0;
87 static inline void AT91_CfgPIO_SPI_CS1(void) {
88 AT91_SYS->PIOA_PDR = AT91C_PA4_NPCS1;
91 static inline void AT91_CfgPIO_SPI_CS2(void) {
92 AT91_SYS->PIOA_PDR = AT91C_PA5_NPCS2;
95 static inline void AT91_CfgPIO_SPI_CS3(void) {
96 AT91_SYS->PIOA_PDR = AT91C_PA6_NPCS3;
100 * Select the DataFlash card.
102 static inline void AT91_CfgPIO_DataFlashCard(void) {
103 AT91_SYS->PIOB_PER = AT91C_PIO_PB7;
104 AT91_SYS->PIOB_OER = AT91C_PIO_PB7;
105 AT91_SYS->PIOB_CODR = AT91C_PIO_PB7;
109 * Enable NAND Flash (SmartMedia) interface.
111 static inline void AT91_CfgPIO_SmartMedia(void) {
112 /* enable PC0=SMCE, PC1=SMOE, PC3=SMWE, A21=CLE, A22=ALE */
113 AT91_SYS->PIOC_ASR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE;
114 AT91_SYS->PIOC_PDR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE;
116 /* Configure PC2 as input (signal READY of the SmartMedia) */
117 AT91_SYS->PIOC_PER = AT91C_PC2_BFAVD; /* enable direct output enable */
118 AT91_SYS->PIOC_ODR = AT91C_PC2_BFAVD; /* disable output */
120 /* Configure PB1 as input (signal Card Detect of the SmartMedia) */
121 AT91_SYS->PIOB_PER = AT91C_PIO_PB1; /* enable direct output enable */
122 AT91_SYS->PIOB_ODR = AT91C_PIO_PB1; /* disable output */
125 static inline int AT91_PIO_SmartMedia_RDY(void) {
126 return (AT91_SYS->PIOC_PDSR & AT91C_PIO_PC2) ? 1 : 0;
129 static inline int AT91_PIO_SmartMedia_CardDetect(void) {
130 return (AT91_SYS->PIOB_PDSR & AT91C_PIO_PB1) ? 1 : 0;