samsung: Enable device tree for s5p_goni

Change this board to add a device tree.

This also adds a pinmux header file although it is not used as yet.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

2 files changed, 111 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-s5pc1xx/periph.h b/arch/arm/include/asm/arch-s5pc1xx/periph.h
new file mode 100644
index 0000000000..5c1c3d4a93
--- /dev/null
+++ b/arch/arm/include/asm/arch-s5pc1xx/periph.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ * Rajeshwari Shinde <rajeshwari.s@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_ARM_ARCH_PERIPH_H
+#define __ASM_ARM_ARCH_PERIPH_H
+
+/*
+ * Peripherals required for pinmux configuration. List will
+ * grow with support for more devices getting added.
+ * Numbering based on interrupt table.
+ *
+ */
+enum periph_id {
+	PERIPH_ID_UART0 = 51,
+	PERIPH_ID_UART1,
+	PERIPH_ID_UART2,
+	PERIPH_ID_UART3,
+	PERIPH_ID_I2C0 = 56,
+	PERIPH_ID_I2C1,
+	PERIPH_ID_I2C2,
+	PERIPH_ID_I2C3,
+	PERIPH_ID_I2C4,
+	PERIPH_ID_I2C5,
+	PERIPH_ID_I2C6,
+	PERIPH_ID_I2C7,
+	PERIPH_ID_SPI0 = 68,
+	PERIPH_ID_SPI1,
+	PERIPH_ID_SPI2,
+	PERIPH_ID_SDMMC0 = 75,
+	PERIPH_ID_SDMMC1,
+	PERIPH_ID_SDMMC2,
+	PERIPH_ID_SDMMC3,
+	PERIPH_ID_I2C8 = 87,
+	PERIPH_ID_I2C9,
+	PERIPH_ID_I2S0 = 98,
+	PERIPH_ID_I2S1 = 99,
+
+	/* Since following peripherals do
+	 * not have shared peripheral interrupts (SPIs)
+	 * they are numbered arbitiraly after the maximum
+	 * SPIs Exynos has (128)
+	 */
+	PERIPH_ID_SROMC = 128,
+	PERIPH_ID_SPI3,
+	PERIPH_ID_SPI4,
+	PERIPH_ID_SDMMC4,
+	PERIPH_ID_PWM0,
+	PERIPH_ID_PWM1,
+	PERIPH_ID_PWM2,
+	PERIPH_ID_PWM3,
+	PERIPH_ID_PWM4,
+	PERIPH_ID_I2C10 = 203,
+
+	PERIPH_ID_NONE = -1,
+};
+
+#endif /* __ASM_ARM_ARCH_PERIPH_H */
diff --git a/arch/arm/include/asm/arch-s5pc1xx/pinmux.h b/arch/arm/include/asm/arch-s5pc1xx/pinmux.h
new file mode 100644
index 0000000000..0b91ef658c
--- /dev/null
+++ b/arch/arm/include/asm/arch-s5pc1xx/pinmux.h
@@ -0,0 +1,50 @@
+/*
+ * 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