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/*
* Copyright (C) 2009 Nokia
* Copyright (C) 2009 Texas Instruments
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include "mux34xx.h"
#define OMAP_MUX_TERMINATOR 0xffff
/* 34xx mux mode options for each pin. See TRM for options */
#define OMAP_MUX_MODE0 0
#define OMAP_MUX_MODE1 1
#define OMAP_MUX_MODE2 2
#define OMAP_MUX_MODE3 3
#define OMAP_MUX_MODE4 4
#define OMAP_MUX_MODE5 5
#define OMAP_MUX_MODE6 6
#define OMAP_MUX_MODE7 7
/* 24xx/34xx mux bit defines */
#define OMAP_PULL_ENA (1 << 3)
#define OMAP_PULL_UP (1 << 4)
#define OMAP_ALTELECTRICALSEL (1 << 5)
/* 34xx specific mux bit defines */
#define OMAP_INPUT_EN (1 << 8)
#define OMAP_OFF_EN (1 << 9)
#define OMAP_OFFOUT_EN (1 << 10)
#define OMAP_OFFOUT_VAL (1 << 11)
#define OMAP_OFF_PULL_EN (1 << 12)
#define OMAP_OFF_PULL_UP (1 << 13)
#define OMAP_WAKEUP_EN (1 << 14)
/* Active pin states */
#define OMAP_PIN_OUTPUT 0
#define OMAP_PIN_INPUT OMAP_INPUT_EN
#define OMAP_PIN_INPUT_PULLUP (OMAP_PULL_ENA | OMAP_INPUT_EN \
| OMAP_PULL_UP)
#define OMAP_PIN_INPUT_PULLDOWN (OMAP_PULL_ENA | OMAP_INPUT_EN)
/* Off mode states */
#define OMAP_PIN_OFF_NONE 0
#define OMAP_PIN_OFF_OUTPUT_HIGH (OMAP_OFF_EN | OMAP_OFFOUT_EN \
| OMAP_OFFOUT_VAL)
#define OMAP_PIN_OFF_OUTPUT_LOW (OMAP_OFF_EN | OMAP_OFFOUT_EN)
#define OMAP_PIN_OFF_INPUT_PULLUP (OMAP_OFF_EN | OMAP_OFF_PULL_EN \
| OMAP_OFF_PULL_UP)
#define OMAP_PIN_OFF_INPUT_PULLDOWN (OMAP_OFF_EN | OMAP_OFF_PULL_EN)
#define OMAP_PIN_OFF_WAKEUPENABLE OMAP_WAKEUP_EN
#define OMAP_MODE_GPIO(x) (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE4)
/* Flags for omap_mux_init */
#define OMAP_PACKAGE_MASK 0xffff
#define OMAP_PACKAGE_CBP 4 /* 515-pin 0.40 0.50 */
#define OMAP_PACKAGE_CUS 3 /* 423-pin 0.65 */
#define OMAP_PACKAGE_CBB 2 /* 515-pin 0.40 0.50 */
#define OMAP_PACKAGE_CBC 1 /* 515-pin 0.50 0.65 */
#define OMAP_MUX_NR_MODES 8 /* Available modes */
#define OMAP_MUX_NR_SIDES 2 /* Bottom & top */
/**
* struct omap_mux - data for omap mux register offset and it's value
* @reg_offset: mux register offset from the mux base
* @gpio: GPIO number
* @muxnames: available signal modes for a ball
*/
struct omap_mux {
u16 reg_offset;
u16 gpio;
#ifdef CONFIG_OMAP_MUX
char *muxnames[OMAP_MUX_NR_MODES];
#ifdef CONFIG_DEBUG_FS
char *balls[OMAP_MUX_NR_SIDES];
#endif
#endif
};
/**
* struct omap_ball - data for balls on omap package
* @reg_offset: mux register offset from the mux base
* @balls: available balls on the package
*/
struct omap_ball {
u16 reg_offset;
char *balls[OMAP_MUX_NR_SIDES];
};
/**
* struct omap_board_mux - data for initializing mux registers
* @reg_offset: mux register offset from the mux base
* @mux_value: desired mux value to set
*/
struct omap_board_mux {
u16 reg_offset;
u16 value;
};
#if defined(CONFIG_OMAP_MUX) && defined(CONFIG_ARCH_OMAP3)
/**
* omap_mux_init_gpio - initialize a signal based on the GPIO number
* @gpio: GPIO number
* @val: Options for the mux register value
*/
int omap_mux_init_gpio(int gpio, int val);
/**
* omap_mux_init_signal - initialize a signal based on the signal name
* @muxname: Mux name in mode0_name.signal_name format
* @val: Options for the mux register value
*/
int omap_mux_init_signal(char *muxname, int val);
#else
static inline int omap_mux_init_gpio(int gpio, int val)
{
return 0;
}
static inline int omap_mux_init_signal(char *muxname, int val)
{
return 0;
}
#endif
/**
* omap_mux_get_gpio() - get mux register value based on GPIO number
* @gpio: GPIO number
*
*/
u16 omap_mux_get_gpio(int gpio);
/**
* omap_mux_set_gpio() - set mux register value based on GPIO number
* @val: New mux register value
* @gpio: GPIO number
*
*/
void omap_mux_set_gpio(u16 val, int gpio);
/**
* omap_mux_read() - read mux register
* @mux_offset: Offset of the mux register
*
*/
u16 omap_mux_read(u16 mux_offset);
/**
* omap_mux_write() - write mux register
* @val: New mux register value
* @mux_offset: Offset of the mux register
*
* This should be only needed for dynamic remuxing of non-gpio signals.
*/
void omap_mux_write(u16 val, u16 mux_offset);
/**
* omap_mux_write_array() - write an array of mux registers
* @board_mux: Array of mux registers terminated by MAP_MUX_TERMINATOR
*
* This should be only needed for dynamic remuxing of non-gpio signals.
*/
void omap_mux_write_array(struct omap_board_mux *board_mux);
/**
* omap3_mux_init() - initialize mux system with board specific set
* @board_mux: Board specific mux table
* @flags: OMAP package type used for the board
*/
int omap3_mux_init(struct omap_board_mux *board_mux, int flags);
/**
* omap_mux_init - private mux init function, do not call
*/
int omap_mux_init(u32 mux_pbase, u32 mux_size,
struct omap_mux *superset,
struct omap_mux *package_subset,
struct omap_board_mux *board_mux,
struct omap_ball *package_balls);
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