pinctrl-nomadik.h 3.0 KB

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  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. #ifndef __PLAT_NOMADIK_GPIO
  13. #define __PLAT_NOMADIK_GPIO
  14. /*
  15. * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving
  16. * the "gpio" namespace for generic and cross-machine functions
  17. */
  18. #define GPIO_BLOCK_SHIFT 5
  19. #define NMK_GPIO_PER_CHIP (1 << GPIO_BLOCK_SHIFT)
  20. /* Register in the logic block */
  21. #define NMK_GPIO_DAT 0x00
  22. #define NMK_GPIO_DATS 0x04
  23. #define NMK_GPIO_DATC 0x08
  24. #define NMK_GPIO_PDIS 0x0c
  25. #define NMK_GPIO_DIR 0x10
  26. #define NMK_GPIO_DIRS 0x14
  27. #define NMK_GPIO_DIRC 0x18
  28. #define NMK_GPIO_SLPC 0x1c
  29. #define NMK_GPIO_AFSLA 0x20
  30. #define NMK_GPIO_AFSLB 0x24
  31. #define NMK_GPIO_LOWEMI 0x28
  32. #define NMK_GPIO_RIMSC 0x40
  33. #define NMK_GPIO_FIMSC 0x44
  34. #define NMK_GPIO_IS 0x48
  35. #define NMK_GPIO_IC 0x4c
  36. #define NMK_GPIO_RWIMSC 0x50
  37. #define NMK_GPIO_FWIMSC 0x54
  38. #define NMK_GPIO_WKS 0x58
  39. /* These appear in DB8540 and later ASICs */
  40. #define NMK_GPIO_EDGELEVEL 0x5C
  41. #define NMK_GPIO_LEVEL 0x60
  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. #define NMK_GPIO_ALT_CX_SHIFT 2
  48. #define NMK_GPIO_ALT_C1 ((1<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
  49. #define NMK_GPIO_ALT_C2 ((2<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
  50. #define NMK_GPIO_ALT_C3 ((3<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
  51. #define NMK_GPIO_ALT_C4 ((4<<NMK_GPIO_ALT_CX_SHIFT) | NMK_GPIO_ALT_C)
  52. /* Pull up/down values */
  53. enum nmk_gpio_pull {
  54. NMK_GPIO_PULL_NONE,
  55. NMK_GPIO_PULL_UP,
  56. NMK_GPIO_PULL_DOWN,
  57. };
  58. /* Sleep mode */
  59. enum nmk_gpio_slpm {
  60. NMK_GPIO_SLPM_INPUT,
  61. NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT,
  62. NMK_GPIO_SLPM_NOCHANGE,
  63. NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE,
  64. };
  65. extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode);
  66. extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull);
  67. #ifdef CONFIG_PINCTRL_NOMADIK
  68. extern int nmk_gpio_set_mode(int gpio, int gpio_mode);
  69. #else
  70. static inline int nmk_gpio_set_mode(int gpio, int gpio_mode)
  71. {
  72. return -ENODEV;
  73. }
  74. #endif
  75. extern int nmk_gpio_get_mode(int gpio);
  76. extern void nmk_gpio_wakeups_suspend(void);
  77. extern void nmk_gpio_wakeups_resume(void);
  78. extern void nmk_gpio_clocks_enable(void);
  79. extern void nmk_gpio_clocks_disable(void);
  80. extern void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up);
  81. /*
  82. * Platform data to register a block: only the initial gpio/irq number.
  83. */
  84. struct nmk_gpio_platform_data {
  85. char *name;
  86. int first_gpio;
  87. int first_irq;
  88. int num_gpio;
  89. u32 (*get_secondary_status)(unsigned int bank);
  90. void (*set_ioforce)(bool enable);
  91. bool supports_sleepmode;
  92. };
  93. #endif /* __PLAT_NOMADIK_GPIO */