xref: /linux/arch/mips/include/asm/mach-rc32434/gpio.h (revision 498495dba268b20e8eadd7fe93c140c68b6cc9d2)
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