/* SPDX-License-Identifier: GPL-2.0+ */ /* * Copyright (C) 2012 Samsung Electronics * Abhilash Kesavan */ #ifndef __ASM_ARM_ARCH_PINMUX_H #define __ASM_ARM_ARCH_PINMUX_H #include "periph.h" /* * Flags for setting specific configarations of peripherals. * List will grow with support for more devices getting added. */ enum { PINMUX_FLAG_NONE = 0x00000000, /* Flags for eMMC */ PINMUX_FLAG_8BIT_MODE = 1 << 0, /* SDMMC 8-bit mode */ /* Flags for SROM controller */ PINMUX_FLAG_BANK = 3 << 0, /* bank number (0-3) */ PINMUX_FLAG_16BIT = 1 << 2, /* 16-bit width */ }; /** * Configures the pinmux for a particular peripheral. * * Each gpio can be configured in many different ways (4 bits on exynos) * such as "input", "output", "special function", "external interrupt" * etc. This function will configure the peripheral pinmux along with * pull-up/down and drive strength. * * @param peripheral peripheral to be configured * @param flags configure flags * Return: 0 if ok, -1 on error (e.g. unsupported peripheral) */ int exynos_pinmux_config(int peripheral, int flags); /** * Decode the peripheral id using the interrpt numbers. * * @param blob Device tree blob * @param node FDT I2C node to find * Return: peripheral id if ok, PERIPH_ID_NONE on error */ int pinmux_decode_periph_id(const void *blob, int node); #endif