/arch/mips/include/asm/mach-rc32434/gpio.h

 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
17struct 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
75extern void rb532_gpio_set_ilevel(int bit, unsigned gpio);
76extern void rb532_gpio_set_istat(int bit, unsigned gpio);
77extern void rb532_gpio_set_func(unsigned gpio);
78
79#endif /* _RC32434_GPIO_H_ */