X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Farch%2Farm%2Finclude%2Fasm%2Farch-exynos%2Fpinmux.h;fp=qemu%2Froms%2Fu-boot%2Farch%2Farm%2Finclude%2Fasm%2Farch-exynos%2Fpinmux.h;h=0b91ef658ca96a0b259f661c7f3cd10bd5520eb5;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git diff --git a/qemu/roms/u-boot/arch/arm/include/asm/arch-exynos/pinmux.h b/qemu/roms/u-boot/arch/arm/include/asm/arch-exynos/pinmux.h new file mode 100644 index 000000000..0b91ef658 --- /dev/null +++ b/qemu/roms/u-boot/arch/arm/include/asm/arch-exynos/pinmux.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * Abhilash Kesavan + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#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