include/linux/sh_pfc.h

   1 /*
   2  * SuperH Pin Function Controller Support
   3  *
   4  * Copyright (c) 2008 Magnus Damm
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10
  11 #ifndef __SH_PFC_H
  12 #define __SH_PFC_H
  13
  14 #include <asm-generic/gpio.h>
  15
  16 typedef unsigned short pinmux_enum_t;
  17 typedef unsigned short pinmux_flag_t;
  18
  19 #define PINMUX_TYPE_NONE            0
  20 #define PINMUX_TYPE_FUNCTION        1
  21 #define PINMUX_TYPE_GPIO            2
  22 #define PINMUX_TYPE_OUTPUT          3
  23 #define PINMUX_TYPE_INPUT           4
  24 #define PINMUX_TYPE_INPUT_PULLUP    5
  25 #define PINMUX_TYPE_INPUT_PULLDOWN  6
  26
  27 #define PINMUX_FLAG_TYPE            (0x7)
  28 #define PINMUX_FLAG_WANT_PULLUP     (1 << 3)
  29 #define PINMUX_FLAG_WANT_PULLDOWN   (1 << 4)
  30
  31 #define PINMUX_FLAG_DBIT_SHIFT      5
  32 #define PINMUX_FLAG_DBIT            (0x1f << PINMUX_FLAG_DBIT_SHIFT)
  33 #define PINMUX_FLAG_DREG_SHIFT      10
  34 #define PINMUX_FLAG_DREG            (0x3f << PINMUX_FLAG_DREG_SHIFT)
  35
  36 struct pinmux_gpio {
  37         pinmux_enum_t enum_id;
  38         pinmux_flag_t flags;
  39 };
  40
  41 #define PINMUX_GPIO(gpio, data_or_mark) [gpio] = { data_or_mark }
  42 #define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
  43
  44 struct pinmux_cfg_reg {
  45         unsigned long reg, reg_width, field_width;
  46         unsigned long *cnt;
  47         pinmux_enum_t *enum_ids;
  48 };
  49
  50 #define PINMUX_CFG_REG(name, r, r_width, f_width) \
  51         .reg = r, .reg_width = r_width, .field_width = f_width,         \
  52         .cnt = (unsigned long [r_width / f_width]) {}, \
  53         .enum_ids = (pinmux_enum_t [(r_width / f_width) * (1 << f_width)]) \
  54
  55 struct pinmux_data_reg {
  56         unsigned long reg, reg_width, reg_shadow;
  57         pinmux_enum_t *enum_ids;
  58 };
  59
  60 #define PINMUX_DATA_REG(name, r, r_width) \
  61         .reg = r, .reg_width = r_width, \
  62         .enum_ids = (pinmux_enum_t [r_width]) \
  63
  64 struct pinmux_range {
  65         pinmux_enum_t begin;
  66         pinmux_enum_t end;
  67         pinmux_enum_t force;
  68 };
  69
  70 struct pinmux_info {
  71         char *name;
  72         pinmux_enum_t reserved_id;
  73         struct pinmux_range data;
  74         struct pinmux_range input;
  75         struct pinmux_range input_pd;
  76         struct pinmux_range input_pu;
  77         struct pinmux_range output;
  78         struct pinmux_range mark;
  79         struct pinmux_range function;
  80
  81         unsigned first_gpio, last_gpio;
  82
  83         struct pinmux_gpio *gpios;
  84         struct pinmux_cfg_reg *cfg_regs;
  85         struct pinmux_data_reg *data_regs;
  86
  87         pinmux_enum_t *gpio_data;
  88         unsigned int gpio_data_size;
  89
  90         unsigned long *gpio_in_use;
  91         struct gpio_chip chip;
  92 };
  93
  94 int register_pinmux(struct pinmux_info *pip);
  95 int unregister_pinmux(struct pinmux_info *pip);
  96
  97 #endif /* __SH_PFC_H */