mux.h 3.9 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
  2. /*
  3. * Table of the Omap register configurations for the FUNC_MUX and
  4. * PULL_DWN combinations.
  5. *
  6. * Copyright (C) 2004 - 2008 Texas Instruments Inc.
  7. * Copyright (C) 2003 - 2008 Nokia Corporation
  8. *
  9. * Written by Tony Lindgren
  10. *
  11. * NOTE: Please use the following naming style for new pin entries.
  12. * For example, W8_1610_MMC2_DAT0, where:
  13. * - W8 = ball
  14. * - 1610 = 1510 or 1610, none if common for both 1510 and 1610
  15. * - MMC2_DAT0 = function
  16. */
  17. #ifndef __ASM_ARCH_MUX_H
  18. #define __ASM_ARCH_MUX_H
  19. #include <linux/soc/ti/omap1-mux.h>
  20. #define PU_PD_SEL_NA 0 /* No pu_pd reg available */
  21. #define PULL_DWN_CTRL_NA 0 /* No pull-down control needed */
  22. #ifdef CONFIG_OMAP_MUX_DEBUG
  23. #define MUX_REG(reg, mode_offset, mode) .mux_reg_name = "FUNC_MUX_CTRL_"#reg, \
  24. .mux_reg = FUNC_MUX_CTRL_##reg, \
  25. .mask_offset = mode_offset, \
  26. .mask = mode,
  27. #define PULL_REG(reg, bit, status) .pull_name = "PULL_DWN_CTRL_"#reg, \
  28. .pull_reg = PULL_DWN_CTRL_##reg, \
  29. .pull_bit = bit, \
  30. .pull_val = status,
  31. #define PU_PD_REG(reg, status) .pu_pd_name = "PU_PD_SEL_"#reg, \
  32. .pu_pd_reg = PU_PD_SEL_##reg, \
  33. .pu_pd_val = status,
  34. #define MUX_REG_7XX(reg, mode_offset, mode) .mux_reg_name = "OMAP7XX_IO_CONF_"#reg, \
  35. .mux_reg = OMAP7XX_IO_CONF_##reg, \
  36. .mask_offset = mode_offset, \
  37. .mask = mode,
  38. #define PULL_REG_7XX(reg, bit, status) .pull_name = "OMAP7XX_IO_CONF_"#reg, \
  39. .pull_reg = OMAP7XX_IO_CONF_##reg, \
  40. .pull_bit = bit, \
  41. .pull_val = status,
  42. #else
  43. #define MUX_REG(reg, mode_offset, mode) .mux_reg = FUNC_MUX_CTRL_##reg, \
  44. .mask_offset = mode_offset, \
  45. .mask = mode,
  46. #define PULL_REG(reg, bit, status) .pull_reg = PULL_DWN_CTRL_##reg, \
  47. .pull_bit = bit, \
  48. .pull_val = status,
  49. #define PU_PD_REG(reg, status) .pu_pd_reg = PU_PD_SEL_##reg, \
  50. .pu_pd_val = status,
  51. #define MUX_REG_7XX(reg, mode_offset, mode) \
  52. .mux_reg = OMAP7XX_IO_CONF_##reg, \
  53. .mask_offset = mode_offset, \
  54. .mask = mode,
  55. #define PULL_REG_7XX(reg, bit, status) .pull_reg = OMAP7XX_IO_CONF_##reg, \
  56. .pull_bit = bit, \
  57. .pull_val = status,
  58. #endif /* CONFIG_OMAP_MUX_DEBUG */
  59. #define MUX_CFG(desc, mux_reg, mode_offset, mode, \
  60. pull_reg, pull_bit, pull_status, \
  61. pu_pd_reg, pu_pd_status, debug_status) \
  62. { \
  63. .name = desc, \
  64. .debug = debug_status, \
  65. MUX_REG(mux_reg, mode_offset, mode) \
  66. PULL_REG(pull_reg, pull_bit, pull_status) \
  67. PU_PD_REG(pu_pd_reg, pu_pd_status) \
  68. },
  69. /*
  70. * OMAP730/850 has a slightly different config for the pin mux.
  71. * - config regs are the OMAP7XX_IO_CONF_x regs (see omap7xx.h) regs and
  72. * not the FUNC_MUX_CTRL_x regs from hardware.h
  73. * - for pull-up/down, only has one enable bit which is in the same register
  74. * as mux config
  75. */
  76. #define MUX_CFG_7XX(desc, mux_reg, mode_offset, mode, \
  77. pull_bit, pull_status, debug_status)\
  78. { \
  79. .name = desc, \
  80. .debug = debug_status, \
  81. MUX_REG_7XX(mux_reg, mode_offset, mode) \
  82. PULL_REG_7XX(mux_reg, pull_bit, pull_status) \
  83. PU_PD_REG(NA, 0) \
  84. },
  85. struct pin_config {
  86. char *name;
  87. const unsigned int mux_reg;
  88. unsigned char debug;
  89. const unsigned char mask_offset;
  90. const unsigned char mask;
  91. const char *pull_name;
  92. const unsigned int pull_reg;
  93. const unsigned char pull_val;
  94. const unsigned char pull_bit;
  95. const char *pu_pd_name;
  96. const unsigned int pu_pd_reg;
  97. const unsigned char pu_pd_val;
  98. #if defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS)
  99. const char *mux_reg_name;
  100. #endif
  101. };
  102. struct omap_mux_cfg {
  103. struct pin_config *pins;
  104. unsigned long size;
  105. int (*cfg_reg)(const struct pin_config *cfg);
  106. };
  107. #ifdef CONFIG_OMAP_MUX
  108. /* setup pin muxing in Linux */
  109. extern int omap1_mux_init(void);
  110. extern int omap_mux_register(struct omap_mux_cfg *);
  111. #else
  112. /* boot loader does it all (no warnings from CONFIG_OMAP_MUX_WARNINGS) */
  113. static inline int omap1_mux_init(void) { return 0; }
  114. #endif
  115. extern int omap2_mux_init(void);
  116. #endif