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Diffstat (limited to 'arch/arm/mach-s5pc1xx/include/mach/pinmux.h')
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diff --git a/arch/arm/mach-s5pc1xx/include/mach/pinmux.h b/arch/arm/mach-s5pc1xx/include/mach/pinmux.h
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+++ b/arch/arm/mach-s5pc1xx/include/mach/pinmux.h
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+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Abhilash Kesavan <a.kesavan@samsung.com>
+ *
+ * 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