arch/arm/mach-omap1/mux.h

   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
  18 #ifndef __ASM_ARCH_MUX_H
  19 #define __ASM_ARCH_MUX_H
  20
  21 #include <linux/soc/ti/omap1-mux.h>
  22
  23 #define PU_PD_SEL_NA            0       /* No pu_pd reg available */
  24 #define PULL_DWN_CTRL_NA        0       /* No pull-down control needed */
  25
  26 #ifdef  CONFIG_OMAP_MUX_DEBUG
  27 #define MUX_REG(reg, mode_offset, mode) .mux_reg_name = "FUNC_MUX_CTRL_"#reg, \
  28                                         .mux_reg = FUNC_MUX_CTRL_##reg, \
  29                                         .mask_offset = mode_offset, \
  30                                         .mask = mode,
  31
  32 #define PULL_REG(reg, bit, status)      .pull_name = "PULL_DWN_CTRL_"#reg, \
  33                                         .pull_reg = PULL_DWN_CTRL_##reg, \
  34                                         .pull_bit = bit, \
  35                                         .pull_val = status,
  36
  37 #define PU_PD_REG(reg, status)          .pu_pd_name = "PU_PD_SEL_"#reg, \
  38                                         .pu_pd_reg = PU_PD_SEL_##reg, \
  39                                         .pu_pd_val = status,
  40
  41 #define MUX_REG_7XX(reg, mode_offset, mode) .mux_reg_name = "OMAP7XX_IO_CONF_"#reg, \
  42                                         .mux_reg = OMAP7XX_IO_CONF_##reg, \
  43                                         .mask_offset = mode_offset, \
  44                                         .mask = mode,
  45
  46 #define PULL_REG_7XX(reg, bit, status)  .pull_name = "OMAP7XX_IO_CONF_"#reg, \
  47                                         .pull_reg = OMAP7XX_IO_CONF_##reg, \
  48                                         .pull_bit = bit, \
  49                                         .pull_val = status,
  50
  51 #else
  52
  53 #define MUX_REG(reg, mode_offset, mode) .mux_reg = FUNC_MUX_CTRL_##reg, \
  54                                         .mask_offset = mode_offset, \
  55                                         .mask = mode,
  56
  57 #define PULL_REG(reg, bit, status)      .pull_reg = PULL_DWN_CTRL_##reg, \
  58                                         .pull_bit = bit, \
  59                                         .pull_val = status,
  60
  61 #define PU_PD_REG(reg, status)          .pu_pd_reg = PU_PD_SEL_##reg, \
  62                                         .pu_pd_val = status,
  63
  64 #define MUX_REG_7XX(reg, mode_offset, mode) \
  65                                         .mux_reg = OMAP7XX_IO_CONF_##reg, \
  66                                         .mask_offset = mode_offset, \
  67                                         .mask = mode,
  68
  69 #define PULL_REG_7XX(reg, bit, status)  .pull_reg = OMAP7XX_IO_CONF_##reg, \
  70                                         .pull_bit = bit, \
  71                                         .pull_val = status,
  72
  73 #endif /* CONFIG_OMAP_MUX_DEBUG */
  74
  75 #define MUX_CFG(desc, mux_reg, mode_offset, mode,       \
  76                 pull_reg, pull_bit, pull_status,        \
  77                 pu_pd_reg, pu_pd_status, debug_status)  \
  78 {                                                       \
  79         .name =  desc,                                  \
  80         .debug = debug_status,                          \
  81         MUX_REG(mux_reg, mode_offset, mode)             \
  82         PULL_REG(pull_reg, pull_bit, pull_status)       \
  83         PU_PD_REG(pu_pd_reg, pu_pd_status)              \
  84 },
  85
  86
  87 /*
  88  * OMAP730/850 has a slightly different config for the pin mux.
  89  * - config regs are the OMAP7XX_IO_CONF_x regs (see omap7xx.h) regs and
  90  *   not the FUNC_MUX_CTRL_x regs from hardware.h
  91  * - for pull-up/down, only has one enable bit which is in the same register
  92  *   as mux config
  93  */
  94 #define MUX_CFG_7XX(desc, mux_reg, mode_offset, mode,   \
  95                    pull_bit, pull_status, debug_status)\
  96 {                                                       \
  97         .name =  desc,                                  \
  98         .debug = debug_status,                          \
  99         MUX_REG_7XX(mux_reg, mode_offset, mode)         \
 100         PULL_REG_7XX(mux_reg, pull_bit, pull_status)    \
 101         PU_PD_REG(NA, 0)                \
 102 },
 103
 104 struct pin_config {
 105         char                    *name;
 106         const unsigned int      mux_reg;
 107         unsigned char           debug;
 108
 109         const unsigned char mask_offset;
 110         const unsigned char mask;
 111
 112         const char *pull_name;
 113         const unsigned int pull_reg;
 114         const unsigned char pull_val;
 115         const unsigned char pull_bit;
 116
 117         const char *pu_pd_name;
 118         const unsigned int pu_pd_reg;
 119         const unsigned char pu_pd_val;
 120
 121 #if     defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS)
 122         const char *mux_reg_name;
 123 #endif
 124
 125 };
 126
 127 struct omap_mux_cfg {
 128         struct pin_config       *pins;
 129         unsigned long           size;
 130         int                     (*cfg_reg)(const struct pin_config *cfg);
 131 };
 132
 133 #ifdef  CONFIG_OMAP_MUX
 134 /* setup pin muxing in Linux */
 135 extern int omap1_mux_init(void);
 136 extern int omap_mux_register(struct omap_mux_cfg *);
 137 #else
 138 /* boot loader does it all (no warnings from CONFIG_OMAP_MUX_WARNINGS) */
 139 static inline int omap1_mux_init(void) { return 0; }
 140 #endif
 141
 142 extern int omap2_mux_init(void);
 143
 144 #endif