1*83d290c5STom Rini /* SPDX-License-Identifier: GPL-2.0+ */ 277b55e8cSThomas Abraham /* 377b55e8cSThomas Abraham * Copyright (C) 2012 Samsung Electronics 477b55e8cSThomas Abraham * Abhilash Kesavan <a.kesavan@samsung.com> 577b55e8cSThomas Abraham */ 677b55e8cSThomas Abraham 777b55e8cSThomas Abraham #ifndef __ASM_ARM_ARCH_PINMUX_H 877b55e8cSThomas Abraham #define __ASM_ARM_ARCH_PINMUX_H 977b55e8cSThomas Abraham 1077b55e8cSThomas Abraham #include "periph.h" 1177b55e8cSThomas Abraham 1277b55e8cSThomas Abraham /* 1377b55e8cSThomas Abraham * Flags for setting specific configarations of peripherals. 1477b55e8cSThomas Abraham * List will grow with support for more devices getting added. 1577b55e8cSThomas Abraham */ 1677b55e8cSThomas Abraham enum { 1777b55e8cSThomas Abraham PINMUX_FLAG_NONE = 0x00000000, 1877b55e8cSThomas Abraham 1977b55e8cSThomas Abraham /* Flags for eMMC */ 2077b55e8cSThomas Abraham PINMUX_FLAG_8BIT_MODE = 1 << 0, /* SDMMC 8-bit mode */ 2177b55e8cSThomas Abraham 2277b55e8cSThomas Abraham /* Flags for SROM controller */ 2377b55e8cSThomas Abraham PINMUX_FLAG_BANK = 3 << 0, /* bank number (0-3) */ 2477b55e8cSThomas Abraham PINMUX_FLAG_16BIT = 1 << 2, /* 16-bit width */ 2577b55e8cSThomas Abraham 2677b55e8cSThomas Abraham /* Flags for I2C */ 2777b55e8cSThomas Abraham PINMUX_FLAG_HS_MODE = 1 << 1, /* I2C High Speed Mode */ 2877b55e8cSThomas Abraham }; 2977b55e8cSThomas Abraham 3077b55e8cSThomas Abraham /** 3177b55e8cSThomas Abraham * Configures the pinmux for a particular peripheral. 3277b55e8cSThomas Abraham * 3377b55e8cSThomas Abraham * Each gpio can be configured in many different ways (4 bits on exynos) 3477b55e8cSThomas Abraham * such as "input", "output", "special function", "external interrupt" 3577b55e8cSThomas Abraham * etc. This function will configure the peripheral pinmux along with 3677b55e8cSThomas Abraham * pull-up/down and drive strength. 3777b55e8cSThomas Abraham * 3877b55e8cSThomas Abraham * @param peripheral peripheral to be configured 3977b55e8cSThomas Abraham * @param flags configure flags 4077b55e8cSThomas Abraham * @return 0 if ok, -1 on error (e.g. unsupported peripheral) 4177b55e8cSThomas Abraham */ 4277b55e8cSThomas Abraham int exynos_pinmux_config(int peripheral, int flags); 4377b55e8cSThomas Abraham 4477b55e8cSThomas Abraham /** 4577b55e8cSThomas Abraham * Decode the peripheral id using the interrpt numbers. 4677b55e8cSThomas Abraham * 4777b55e8cSThomas Abraham * @param blob Device tree blob 4877b55e8cSThomas Abraham * @param node FDT I2C node to find 4977b55e8cSThomas Abraham * @return peripheral id if ok, PERIPH_ID_NONE on error 5077b55e8cSThomas Abraham */ 5177b55e8cSThomas Abraham int pinmux_decode_periph_id(const void *blob, int node); 5277b55e8cSThomas Abraham #endif 53