From c5e3710a185d821c3c68ae92f932a7a9956522bd Mon Sep 17 00:00:00 2001 From: Rajeshwari Shinde Date: Wed, 6 Jun 2012 19:54:29 +0000 Subject: EXYNOS5: PINMUX: Added default pinumx settings This patch performs the pinmux configuration in a common file. As of now only EXYNOS5 pinmux for SDMMC, UART and Ethernet is supported. Signed-off-by: Abhilash Kesavan Signed-off-by: Che-Liang Chiou Signed-off-by: Rajeshwari Shinde Acked-by: Chander Kashyap Acked-by: Simon Glass Signed-off-by: Minkyu Kang --- arch/arm/include/asm/arch-exynos/periph.h | 47 +++++++++++++++++++++++++ arch/arm/include/asm/arch-exynos/pinmux.h | 58 +++++++++++++++++++++++++++++++ 2 files changed, 105 insertions(+) create mode 100644 arch/arm/include/asm/arch-exynos/periph.h create mode 100644 arch/arm/include/asm/arch-exynos/pinmux.h (limited to 'arch/arm/include/asm') diff --git a/arch/arm/include/asm/arch-exynos/periph.h b/arch/arm/include/asm/arch-exynos/periph.h new file mode 100644 index 000000000..5db25aa88 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/periph.h @@ -0,0 +1,47 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * Rajeshwari Shinde + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __ASM_ARM_ARCH_PERIPH_H +#define __ASM_ARM_ARCH_PERIPH_H + +/* + * Peripherals requiring clock/pinmux configuration. List will + * grow with support for more devices getting added. + * + */ +enum periph_id { + PERIPH_ID_SDMMC0, + PERIPH_ID_SDMMC1, + PERIPH_ID_SDMMC2, + PERIPH_ID_SDMMC3, + PERIPH_ID_SROMC, + PERIPH_ID_UART0, + PERIPH_ID_UART1, + PERIPH_ID_UART2, + PERIPH_ID_UART3, + + PERIPH_ID_COUNT, + PERIPH_ID_NONE = -1, +}; + +#endif /* __ASM_ARM_ARCH_PERIPH_H */ diff --git a/arch/arm/include/asm/arch-exynos/pinmux.h b/arch/arm/include/asm/arch-exynos/pinmux.h new file mode 100644 index 000000000..10ea736c7 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/pinmux.h @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * Abhilash Kesavan + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#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); + +#endif -- cgit v1.2.3