1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright 2002 Integrated Device Technology, Inc. 4 * All rights reserved. 5 * 6 * GPIO register definition. 7 * 8 * Author : ryan.holmQVist@idt.com 9 * Date : 20011005 10 * Copyright (C) 2001, 2002 Ryan Holm <ryan.holmQVist@idt.com> 11 * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org> 12 */ 13 14 #ifndef _RC32434_GPIO_H_ 15 #define _RC32434_GPIO_H_ 16 17 struct rb532_gpio_reg { 18 u32 gpiofunc; /* GPIO Function Register 19 * gpiofunc[x]==0 bit = gpio 20 * func[x]==1 bit = altfunc 21 */ 22 u32 gpiocfg; /* GPIO Configuration Register 23 * gpiocfg[x]==0 bit = input 24 * gpiocfg[x]==1 bit = output 25 */ 26 u32 gpiod; /* GPIO Data Register 27 * gpiod[x] read/write gpio pinX status 28 */ 29 u32 gpioilevel; /* GPIO Interrupt Status Register 30 * interrupt level (see gpioistat) 31 */ 32 u32 gpioistat; /* Gpio Interrupt Status Register 33 * istat[x] = (gpiod[x] == level[x]) 34 * cleared in ISR (STICKY bits) 35 */ 36 u32 gpionmien; /* GPIO Non-maskable Interrupt Enable Register */ 37 }; 38 39 /* UART GPIO signals */ 40 #define RC32434_UART0_SOUT (1 << 0) 41 #define RC32434_UART0_SIN (1 << 1) 42 #define RC32434_UART0_RTS (1 << 2) 43 #define RC32434_UART0_CTS (1 << 3) 44 45 /* M & P bus GPIO signals */ 46 #define RC32434_MP_BIT_22 (1 << 4) 47 #define RC32434_MP_BIT_23 (1 << 5) 48 #define RC32434_MP_BIT_24 (1 << 6) 49 #define RC32434_MP_BIT_25 (1 << 7) 50 51 /* CPU GPIO signals */ 52 #define RC32434_CPU_GPIO (1 << 8) 53 54 /* Reserved GPIO signals */ 55 #define RC32434_AF_SPARE_6 (1 << 9) 56 #define RC32434_AF_SPARE_4 (1 << 10) 57 #define RC32434_AF_SPARE_3 (1 << 11) 58 #define RC32434_AF_SPARE_2 (1 << 12) 59 60 /* PCI messaging unit */ 61 #define RC32434_PCI_MSU_GPIO (1 << 13) 62 63 /* NAND GPIO signals */ 64 #define GPIO_RDY 8 65 #define GPIO_WPX 9 66 #define GPIO_ALE 10 67 #define GPIO_CLE 11 68 69 /* Compact Flash GPIO pin */ 70 #define CF_GPIO_NUM 13 71 72 /* S1 button GPIO (shared with UART0_SIN) */ 73 #define GPIO_BTN_S1 1 74 75 extern void rb532_gpio_set_ilevel(int bit, unsigned gpio); 76 extern void rb532_gpio_set_istat(int bit, unsigned gpio); 77 extern void rb532_gpio_set_func(unsigned gpio); 78 79 #endif /* _RC32434_GPIO_H_ */ 80