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Linus Walleij0f332862011-08-22 08:33:30 +01001/*
2 * Structures and registers for GPIO access in the Nomadik SoC
3 *
4 * Copyright (C) 2008 STMicroelectronics
5 * Author: Prafulla WADASKAR <prafulla.wadaskar@st.com>
6 * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#ifndef __PLAT_NOMADIK_GPIO
14#define __PLAT_NOMADIK_GPIO
15
16/*
17 * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving
18 * the "gpio" namespace for generic and cross-machine functions
19 */
20
21/* Register in the logic block */
22#define NMK_GPIO_DAT 0x00
23#define NMK_GPIO_DATS 0x04
24#define NMK_GPIO_DATC 0x08
25#define NMK_GPIO_PDIS 0x0c
26#define NMK_GPIO_DIR 0x10
27#define NMK_GPIO_DIRS 0x14
28#define NMK_GPIO_DIRC 0x18
29#define NMK_GPIO_SLPC 0x1c
30#define NMK_GPIO_AFSLA 0x20
31#define NMK_GPIO_AFSLB 0x24
Rabin Vincentebc61782011-09-28 15:49:11 +053032#define NMK_GPIO_LOWEMI 0x28
Linus Walleij0f332862011-08-22 08:33:30 +010033
34#define NMK_GPIO_RIMSC 0x40
35#define NMK_GPIO_FIMSC 0x44
36#define NMK_GPIO_IS 0x48
37#define NMK_GPIO_IC 0x4c
38#define NMK_GPIO_RWIMSC 0x50
39#define NMK_GPIO_FWIMSC 0x54
40#define NMK_GPIO_WKS 0x58
41
42/* Alternate functions: function C is set in hw by setting both A and B */
43#define NMK_GPIO_ALT_GPIO 0
44#define NMK_GPIO_ALT_A 1
45#define NMK_GPIO_ALT_B 2
46#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)
47
Jean-Nicolas Grauxc22df082012-09-27 15:38:50 +020048#define NMK_GPIO_ALT_CX_SHIFT 2
49#define NMK_GPIO_ALT_C1 ((1<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
50#define NMK_GPIO_ALT_C2 ((2<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
51#define NMK_GPIO_ALT_C3 ((3<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
52#define NMK_GPIO_ALT_C4 ((4<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
53
Linus Walleij0f332862011-08-22 08:33:30 +010054/* Pull up/down values */
55enum nmk_gpio_pull {
56 NMK_GPIO_PULL_NONE,
57 NMK_GPIO_PULL_UP,
58 NMK_GPIO_PULL_DOWN,
59};
60
61/* Sleep mode */
62enum nmk_gpio_slpm {
63 NMK_GPIO_SLPM_INPUT,
64 NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT,
65 NMK_GPIO_SLPM_NOCHANGE,
66 NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE,
67};
68
69extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode);
70extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull);
Arnd Bergmann0fa7be42012-05-15 11:24:34 +000071#ifdef CONFIG_PINCTRL_NOMADIK
Linus Walleij0f332862011-08-22 08:33:30 +010072extern int nmk_gpio_set_mode(int gpio, int gpio_mode);
Arnd Bergmann0fa7be42012-05-15 11:24:34 +000073#else
74static inline int nmk_gpio_set_mode(int gpio, int gpio_mode)
75{
76 return -ENODEV;
77}
78#endif
Linus Walleij0f332862011-08-22 08:33:30 +010079extern int nmk_gpio_get_mode(int gpio);
80
81extern void nmk_gpio_wakeups_suspend(void);
82extern void nmk_gpio_wakeups_resume(void);
83
Linus Torvalds41684f62011-10-29 07:27:45 -070084extern void nmk_gpio_clocks_enable(void);
85extern void nmk_gpio_clocks_disable(void);
86
Linus Walleij0f332862011-08-22 08:33:30 +010087extern void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up);
88
89/*
90 * Platform data to register a block: only the initial gpio/irq number.
91 */
92struct nmk_gpio_platform_data {
93 char *name;
94 int first_gpio;
95 int first_irq;
96 int num_gpio;
97 u32 (*get_secondary_status)(unsigned int bank);
98 void (*set_ioforce)(bool enable);
99 bool supports_sleepmode;
100};
101
102#endif /* __PLAT_NOMADIK_GPIO */