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_ */