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/*
* (C) Copyright 2010-2014
* NVIDIA Corporation <www.nvidia.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _TEGRA_PINMUX_H_
#define _TEGRA_PINMUX_H_
#include <asm/arch/tegra.h>
/* The pullup/pulldown state of a pin group */
enum pmux_pull {
PMUX_PULL_NORMAL = 0,
PMUX_PULL_DOWN,
PMUX_PULL_UP,
};
/* Defines whether a pin group is tristated or in normal operation */
enum pmux_tristate {
PMUX_TRI_NORMAL = 0,
PMUX_TRI_TRISTATE = 1,
};
#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
enum pmux_pin_io {
PMUX_PIN_OUTPUT = 0,
PMUX_PIN_INPUT = 1,
PMUX_PIN_NONE,
};
enum pmux_pin_lock {
PMUX_PIN_LOCK_DEFAULT = 0,
PMUX_PIN_LOCK_DISABLE,
PMUX_PIN_LOCK_ENABLE,
};
enum pmux_pin_od {
PMUX_PIN_OD_DEFAULT = 0,
PMUX_PIN_OD_DISABLE,
PMUX_PIN_OD_ENABLE,
};
enum pmux_pin_ioreset {
PMUX_PIN_IO_RESET_DEFAULT = 0,
PMUX_PIN_IO_RESET_DISABLE,
PMUX_PIN_IO_RESET_ENABLE,
};
#ifdef TEGRA_PMX_HAS_RCV_SEL
enum pmux_pin_rcv_sel {
PMUX_PIN_RCV_SEL_DEFAULT = 0,
PMUX_PIN_RCV_SEL_NORMAL,
PMUX_PIN_RCV_SEL_HIGH,
};
#endif /* TEGRA_PMX_HAS_RCV_SEL */
#endif /* TEGRA_PMX_HAS_PIN_IO_BIT_ETC */
/*
* This defines the configuration for a pin, including the function assigned,
* pull up/down settings and tristate settings. Having set up one of these
* you can call pinmux_config_pingroup() to configure a pin in one step. Also
* available is pinmux_config_table() to configure a list of pins.
*/
struct pmux_pingrp_config {
u32 pingrp:16; /* pin group PMUX_PINGRP_... */
u32 func:8; /* function to assign PMUX_FUNC_... */
u32 pull:2; /* pull up/down/normal PMUX_PULL_...*/
u32 tristate:2; /* tristate or normal PMUX_TRI_... */
#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
u32 io:2; /* input or output PMUX_PIN_... */
u32 lock:2; /* lock enable/disable PMUX_PIN... */
u32 od:2; /* open-drain or push-pull driver */
u32 ioreset:2; /* input/output reset PMUX_PIN... */
#ifdef TEGRA_PMX_HAS_RCV_SEL
u32 rcv_sel:2; /* select between High and Normal */
/* VIL/VIH receivers */
#endif
#endif
};
#if !defined(CONFIG_TEGRA20) && !defined(CONFIG_TEGRA30)
/* Set the pinmux CLAMP_INPUTS_WHEN_TRISTATED bit */
void pinmux_set_tristate_input_clamping(void);
#endif
/* Set the mux function for a pin group */
void pinmux_set_func(enum pmux_pingrp pin, enum pmux_func func);
/* Set the pull up/down feature for a pin group */
void pinmux_set_pullupdown(enum pmux_pingrp pin, enum pmux_pull pupd);
/* Set a pin group to tristate */
void pinmux_tristate_enable(enum pmux_pingrp pin);
/* Set a pin group to normal (non tristate) */
void pinmux_tristate_disable(enum pmux_pingrp pin);
#ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
/* Set a pin group as input or output */
void pinmux_set_io(enum pmux_pingrp pin, enum pmux_pin_io io);
#endif
/**
* Configure a list of pin groups
*
* @param config List of config items
* @param len Number of config items in list
*/
void pinmux_config_pingrp_table(const struct pmux_pingrp_config *config,
int len);
#ifdef TEGRA_PMX_HAS_DRVGRPS
#define PMUX_SLWF_MIN 0
#define PMUX_SLWF_MAX 3
#define PMUX_SLWF_NONE -1
#define PMUX_SLWR_MIN 0
#define PMUX_SLWR_MAX 3
#define PMUX_SLWR_NONE -1
#define PMUX_DRVUP_MIN 0
#define PMUX_DRVUP_MAX 127
#define PMUX_DRVUP_NONE -1
#define PMUX_DRVDN_MIN 0
#define PMUX_DRVDN_MAX 127
#define PMUX_DRVDN_NONE -1
/* Defines a pin group cfg's low-power mode select */
enum pmux_lpmd {
PMUX_LPMD_X8 = 0,
PMUX_LPMD_X4,
PMUX_LPMD_X2,
PMUX_LPMD_X,
PMUX_LPMD_NONE = -1,
};
/* Defines whether a pin group cfg's schmidt is enabled or not */
enum pmux_schmt {
PMUX_SCHMT_DISABLE = 0,
PMUX_SCHMT_ENABLE = 1,
PMUX_SCHMT_NONE = -1,
};
/* Defines whether a pin group cfg's high-speed mode is enabled or not */
enum pmux_hsm {
PMUX_HSM_DISABLE = 0,
PMUX_HSM_ENABLE = 1,
PMUX_HSM_NONE = -1,
};
/*
* This defines the configuration for a pin group's pad control config
*/
struct pmux_drvgrp_config {
u32 drvgrp:16; /* pin group PMUX_DRVGRP_x */
u32 slwf:3; /* falling edge slew */
u32 slwr:3; /* rising edge slew */
u32 drvup:8; /* pull-up drive strength */
u32 drvdn:8; /* pull-down drive strength */
u32 lpmd:3; /* low-power mode selection */
u32 schmt:2; /* schmidt enable */
u32 hsm:2; /* high-speed mode enable */
};
/**
* Set the GP pad configs
*
* @param config List of config items
* @param len Number of config items in list
*/
void pinmux_config_drvgrp_table(const struct pmux_drvgrp_config *config,
int len);
#endif /* TEGRA_PMX_HAS_DRVGRPS */
struct pmux_pingrp_desc {
u8 funcs[4];
#if defined(CONFIG_TEGRA20)
u8 ctl_id;
u8 pull_id;
#endif /* CONFIG_TEGRA20 */
};
extern const struct pmux_pingrp_desc *tegra_soc_pingroups;
#endif /* _TEGRA_PINMUX_H_ */
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