diff options
Diffstat (limited to 'arch/arm/include/asm/arch-tegra/pinmux.h')
| -rw-r--r-- | arch/arm/include/asm/arch-tegra/pinmux.h | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-tegra/pinmux.h b/arch/arm/include/asm/arch-tegra/pinmux.h new file mode 100644 index 0000000..4b6e841 --- /dev/null +++ b/arch/arm/include/asm/arch-tegra/pinmux.h @@ -0,0 +1,249 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2010-2014 + * NVIDIA Corporation <www.nvidia.com> + */ + +#ifndef _TEGRA_PINMUX_H_ +#define _TEGRA_PINMUX_H_ + +#include <linux/types.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_PINS_HAVE_E_INPUT +enum pmux_pin_io { + PMUX_PIN_OUTPUT = 0, + PMUX_PIN_INPUT = 1, + PMUX_PIN_NONE, +}; +#endif + +#ifdef TEGRA_PMX_PINS_HAVE_LOCK +enum pmux_pin_lock { + PMUX_PIN_LOCK_DEFAULT = 0, + PMUX_PIN_LOCK_DISABLE, + PMUX_PIN_LOCK_ENABLE, +}; +#endif + +#ifdef TEGRA_PMX_PINS_HAVE_OD +enum pmux_pin_od { + PMUX_PIN_OD_DEFAULT = 0, + PMUX_PIN_OD_DISABLE, + PMUX_PIN_OD_ENABLE, +}; +#endif + +#ifdef TEGRA_PMX_PINS_HAVE_IO_RESET +enum pmux_pin_ioreset { + PMUX_PIN_IO_RESET_DEFAULT = 0, + PMUX_PIN_IO_RESET_DISABLE, + PMUX_PIN_IO_RESET_ENABLE, +}; +#endif + +#ifdef TEGRA_PMX_PINS_HAVE_RCV_SEL +enum pmux_pin_rcv_sel { + PMUX_PIN_RCV_SEL_DEFAULT = 0, + PMUX_PIN_RCV_SEL_NORMAL, + PMUX_PIN_RCV_SEL_HIGH, +}; +#endif + +#ifdef TEGRA_PMX_PINS_HAVE_E_IO_HV +enum pmux_pin_e_io_hv { + PMUX_PIN_E_IO_HV_DEFAULT = 0, + PMUX_PIN_E_IO_HV_NORMAL, + PMUX_PIN_E_IO_HV_HIGH, +}; +#endif + +#ifdef TEGRA_PMX_GRPS_HAVE_LPMD +/* 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, +}; +#endif + +#if defined(TEGRA_PMX_PINS_HAVE_SCHMT) || defined(TEGRA_PMX_GRPS_HAVE_SCHMT) +/* 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, +}; +#endif + +#if defined(TEGRA_PMX_PINS_HAVE_HSM) || defined(TEGRA_PMX_GRPS_HAVE_HSM) +/* 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, +}; +#endif + +/* + * 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_PINS_HAVE_E_INPUT + u32 io:2; /* input or output PMUX_PIN_... */ +#endif +#ifdef TEGRA_PMX_PINS_HAVE_LOCK + u32 lock:2; /* lock enable/disable PMUX_PIN... */ +#endif +#ifdef TEGRA_PMX_PINS_HAVE_OD + u32 od:2; /* open-drain or push-pull driver */ +#endif +#ifdef TEGRA_PMX_PINS_HAVE_IO_RESET + u32 ioreset:2; /* input/output reset PMUX_PIN... */ +#endif +#ifdef TEGRA_PMX_PINS_HAVE_RCV_SEL + u32 rcv_sel:2; /* select between High and Normal */ + /* VIL/VIH receivers */ +#endif +#ifdef TEGRA_PMX_PINS_HAVE_E_IO_HV + u32 e_io_hv:2; /* select 3.3v tolerant receivers */ +#endif +#ifdef TEGRA_PMX_PINS_HAVE_SCHMT + u32 schmt:2; /* schmitt enable */ +#endif +#ifdef TEGRA_PMX_PINS_HAVE_HSM + u32 hsm:2; /* high-speed mode enable */ +#endif +}; + +#ifdef TEGRA_PMX_SOC_HAS_IO_CLAMPING +/* Set/clear the pinmux CLAMP_INPUTS_WHEN_TRISTATED bit */ +void pinmux_set_tristate_input_clamping(void); +void pinmux_clear_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_PINS_HAVE_E_INPUT +/* 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); + +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; + +#ifdef TEGRA_PMX_SOC_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 + +/* + * 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 */ +#ifdef TEGRA_PMX_GRPS_HAVE_LPMD + u32 lpmd:3; /* low-power mode selection */ +#endif +#ifdef TEGRA_PMX_GRPS_HAVE_SCHMT + u32 schmt:2; /* schmidt enable */ +#endif +#ifdef TEGRA_PMX_GRPS_HAVE_HSM + u32 hsm:2; /* high-speed mode enable */ +#endif +}; + +/** + * 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_SOC_HAS_DRVGRPS */ + +#ifdef TEGRA_PMX_SOC_HAS_MIPI_PAD_CTRL_GRPS +struct pmux_mipipadctrlgrp_config { + u32 grp:16; /* pin group PMUX_MIPIPADCTRLGRP_x */ + u32 func:8; /* function to assign PMUX_FUNC_... */ +}; + +void pinmux_config_mipipadctrlgrp_table( + const struct pmux_mipipadctrlgrp_config *config, int len); + +struct pmux_mipipadctrlgrp_desc { + u8 funcs[2]; +}; + +extern const struct pmux_mipipadctrlgrp_desc *tegra_soc_mipipadctrl_groups; +#endif /* TEGRA_PMX_SOC_HAS_MIPI_PAD_CTRL_GRPS */ + +#endif /* _TEGRA_PINMUX_H_ */ |