arch/arm/plat-nomadik/include/plat/gpio-nomadik.h

   1 /*
   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
  32
  33 #define NMK_GPIO_RIMSC  0x40
  34 #define NMK_GPIO_FIMSC  0x44
  35 #define NMK_GPIO_IS     0x48
  36 #define NMK_GPIO_IC     0x4c
  37 #define NMK_GPIO_RWIMSC 0x50
  38 #define NMK_GPIO_FWIMSC 0x54
  39 #define NMK_GPIO_WKS    0x58
  40
  41 /* Alternate functions: function C is set in hw by setting both A and B */
  42 #define NMK_GPIO_ALT_GPIO       0
  43 #define NMK_GPIO_ALT_A  1
  44 #define NMK_GPIO_ALT_B  2
  45 #define NMK_GPIO_ALT_C  (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B)
  46
  47 /* Pull up/down values */
  48 enum nmk_gpio_pull {
  49         NMK_GPIO_PULL_NONE,
  50         NMK_GPIO_PULL_UP,
  51         NMK_GPIO_PULL_DOWN,
  52 };
  53
  54 /* Sleep mode */
  55 enum nmk_gpio_slpm {
  56         NMK_GPIO_SLPM_INPUT,
  57         NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT,
  58         NMK_GPIO_SLPM_NOCHANGE,
  59         NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE,
  60 };
  61
  62 extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode);
  63 extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull);
  64 extern int nmk_gpio_set_mode(int gpio, int gpio_mode);
  65 extern int nmk_gpio_get_mode(int gpio);
  66
  67 extern void nmk_gpio_wakeups_suspend(void);
  68 extern void nmk_gpio_wakeups_resume(void);
  69
  70 extern void nmk_gpio_clocks_enable(void);
  71 extern void nmk_gpio_clocks_disable(void);
  72
  73 extern void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up);
  74
  75 /*
  76  * Platform data to register a block: only the initial gpio/irq number.
  77  */
  78 struct nmk_gpio_platform_data {
  79         char *name;
  80         int first_gpio;
  81         int first_irq;
  82         int num_gpio;
  83         u32 (*get_secondary_status)(unsigned int bank);
  84         void (*set_ioforce)(bool enable);
  85         bool supports_sleepmode;
  86 };
  87
  88 #endif /* __PLAT_NOMADIK_GPIO */