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 */ 98