release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-omap2/mux.h

   1 /*
   2  * Copyright (C) 2009 Nokia
   3  * Copyright (C) 2009 Texas Instruments
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9
  10 #include "mux2420.h"
  11 #include "mux2430.h"
  12 #include "mux34xx.h"
  13
  14 #define OMAP_MUX_TERMINATOR     0xffff
  15
  16 /* 34xx mux mode options for each pin. See TRM for options */
  17 #define OMAP_MUX_MODE0      0
  18 #define OMAP_MUX_MODE1      1
  19 #define OMAP_MUX_MODE2      2
  20 #define OMAP_MUX_MODE3      3
  21 #define OMAP_MUX_MODE4      4
  22 #define OMAP_MUX_MODE5      5
  23 #define OMAP_MUX_MODE6      6
  24 #define OMAP_MUX_MODE7      7
  25
  26 /* 24xx/34xx mux bit defines */
  27 #define OMAP_PULL_ENA                   (1 << 3)
  28 #define OMAP_PULL_UP                    (1 << 4)
  29 #define OMAP_ALTELECTRICALSEL           (1 << 5)
  30
  31 /* 34xx specific mux bit defines */
  32 #define OMAP_INPUT_EN                   (1 << 8)
  33 #define OMAP_OFF_EN                     (1 << 9)
  34 #define OMAP_OFFOUT_EN                  (1 << 10)
  35 #define OMAP_OFFOUT_VAL                 (1 << 11)
  36 #define OMAP_OFF_PULL_EN                (1 << 12)
  37 #define OMAP_OFF_PULL_UP                (1 << 13)
  38 #define OMAP_WAKEUP_EN                  (1 << 14)
  39
  40 /* Active pin states */
  41 #define OMAP_PIN_OUTPUT                 0
  42 #define OMAP_PIN_INPUT                  OMAP_INPUT_EN
  43 #define OMAP_PIN_INPUT_PULLUP           (OMAP_PULL_ENA | OMAP_INPUT_EN \
  44                                                 | OMAP_PULL_UP)
  45 #define OMAP_PIN_INPUT_PULLDOWN         (OMAP_PULL_ENA | OMAP_INPUT_EN)
  46
  47 /* Off mode states */
  48 #define OMAP_PIN_OFF_NONE               0
  49 #define OMAP_PIN_OFF_OUTPUT_HIGH        (OMAP_OFF_EN | OMAP_OFFOUT_EN \
  50                                                 | OMAP_OFFOUT_VAL)
  51 #define OMAP_PIN_OFF_OUTPUT_LOW         (OMAP_OFF_EN | OMAP_OFFOUT_EN)
  52 #define OMAP_PIN_OFF_INPUT_PULLUP       (OMAP_OFF_EN | OMAP_OFF_PULL_EN \
  53                                                 | OMAP_OFF_PULL_UP)
  54 #define OMAP_PIN_OFF_INPUT_PULLDOWN     (OMAP_OFF_EN | OMAP_OFF_PULL_EN)
  55 #define OMAP_PIN_OFF_WAKEUPENABLE       OMAP_WAKEUP_EN
  56
  57 #define OMAP_MODE_GPIO(x)       (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE4)
  58
  59 /* Flags for omap_mux_init */
  60 #define OMAP_PACKAGE_MASK               0xffff
  61 #define OMAP_PACKAGE_CBP                6               /* 515-pin 0.40 0.50 */
  62 #define OMAP_PACKAGE_CUS                5               /* 423-pin 0.65 */
  63 #define OMAP_PACKAGE_CBB                4               /* 515-pin 0.40 0.50 */
  64 #define OMAP_PACKAGE_CBC                3               /* 515-pin 0.50 0.65 */
  65 #define OMAP_PACKAGE_ZAC                2               /* 24xx 447-pin POP */
  66 #define OMAP_PACKAGE_ZAF                1               /* 2420 447-pin SIP */
  67
  68
  69 #define OMAP_MUX_NR_MODES       8                       /* Available modes */
  70 #define OMAP_MUX_NR_SIDES       2                       /* Bottom & top */
  71
  72 /**
  73  * struct omap_mux - data for omap mux register offset and it's value
  74  * @reg_offset: mux register offset from the mux base
  75  * @gpio:       GPIO number
  76  * @muxnames:   available signal modes for a ball
  77  */
  78 struct omap_mux {
  79         u16     reg_offset;
  80         u16     gpio;
  81 #ifdef CONFIG_OMAP_MUX
  82         char    *muxnames[OMAP_MUX_NR_MODES];
  83 #ifdef CONFIG_DEBUG_FS
  84         char    *balls[OMAP_MUX_NR_SIDES];
  85 #endif
  86 #endif
  87 };
  88
  89 /**
  90  * struct omap_ball - data for balls on omap package
  91  * @reg_offset: mux register offset from the mux base
  92  * @balls:      available balls on the package
  93  */
  94 struct omap_ball {
  95         u16     reg_offset;
  96         char    *balls[OMAP_MUX_NR_SIDES];
  97 };
  98
  99 /**
 100  * struct omap_board_mux - data for initializing mux registers
 101  * @reg_offset: mux register offset from the mux base
 102  * @mux_value:  desired mux value to set
 103  */
 104 struct omap_board_mux {
 105         u16     reg_offset;
 106         u16     value;
 107 };
 108
 109 #if defined(CONFIG_OMAP_MUX)
 110
 111 /**
 112  * omap_mux_init_gpio - initialize a signal based on the GPIO number
 113  * @gpio:               GPIO number
 114  * @val:                Options for the mux register value
 115  */
 116 int omap_mux_init_gpio(int gpio, int val);
 117
 118 /**
 119  * omap_mux_init_signal - initialize a signal based on the signal name
 120  * @muxname:            Mux name in mode0_name.signal_name format
 121  * @val:                Options for the mux register value
 122  */
 123 int omap_mux_init_signal(char *muxname, int val);
 124
 125 #else
 126
 127 static inline int omap_mux_init_gpio(int gpio, int val)
 128 {
 129         return 0;
 130 }
 131 static inline int omap_mux_init_signal(char *muxname, int val)
 132 {
 133         return 0;
 134 }
 135
 136 #endif
 137
 138 /**
 139  * omap_mux_get_gpio() - get mux register value based on GPIO number
 140  * @gpio:               GPIO number
 141  *
 142  */
 143 u16 omap_mux_get_gpio(int gpio);
 144
 145 /**
 146  * omap_mux_set_gpio() - set mux register value based on GPIO number
 147  * @val:                New mux register value
 148  * @gpio:               GPIO number
 149  *
 150  */
 151 void omap_mux_set_gpio(u16 val, int gpio);
 152
 153 /**
 154  * omap_mux_read() - read mux register
 155  * @mux_offset:         Offset of the mux register
 156  *
 157  */
 158 u16 omap_mux_read(u16 mux_offset);
 159
 160 /**
 161  * omap_mux_write() - write mux register
 162  * @val:                New mux register value
 163  * @mux_offset:         Offset of the mux register
 164  *
 165  * This should be only needed for dynamic remuxing of non-gpio signals.
 166  */
 167 void omap_mux_write(u16 val, u16 mux_offset);
 168
 169 /**
 170  * omap_mux_write_array() - write an array of mux registers
 171  * @board_mux:          Array of mux registers terminated by MAP_MUX_TERMINATOR
 172  *
 173  * This should be only needed for dynamic remuxing of non-gpio signals.
 174  */
 175 void omap_mux_write_array(struct omap_board_mux *board_mux);
 176
 177 /**
 178  * omap2420_mux_init() - initialize mux system with board specific set
 179  * @board_mux:          Board specific mux table
 180  * @flags:              OMAP package type used for the board
 181  */
 182 int omap2420_mux_init(struct omap_board_mux *board_mux, int flags);
 183
 184 /**
 185  * omap2430_mux_init() - initialize mux system with board specific set
 186  * @board_mux:          Board specific mux table
 187  * @flags:              OMAP package type used for the board
 188  */
 189 int omap2430_mux_init(struct omap_board_mux *board_mux, int flags);
 190
 191 /**
 192  * omap3_mux_init() - initialize mux system with board specific set
 193  * @board_mux:          Board specific mux table
 194  * @flags:              OMAP package type used for the board
 195  */
 196 int omap3_mux_init(struct omap_board_mux *board_mux, int flags);
 197
 198 /**
 199  * omap_mux_init - private mux init function, do not call
 200  */
 201 int omap_mux_init(u32 mux_pbase, u32 mux_size,
 202                                 struct omap_mux *superset,
 203                                 struct omap_mux *package_subset,
 204                                 struct omap_board_mux *board_mux,
 205                                 struct omap_ball *package_balls);