| Rajeshwari Shinde | c5e3710 | 2012-06-06 19:54:29 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Samsung Electronics |
| 3 | * Abhilash Kesavan <a.kesavan@samsung.com> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #ifndef __ASM_ARM_ARCH_PINMUX_H |
| 25 | #define __ASM_ARM_ARCH_PINMUX_H |
| 26 | |
| 27 | #include "periph.h" |
| 28 | |
| 29 | /* |
| 30 | * Flags for setting specific configarations of peripherals. |
| 31 | * List will grow with support for more devices getting added. |
| 32 | */ |
| 33 | enum { |
| 34 | PINMUX_FLAG_NONE = 0x00000000, |
| 35 | |
| 36 | /* Flags for eMMC */ |
| 37 | PINMUX_FLAG_8BIT_MODE = 1 << 0, /* SDMMC 8-bit mode */ |
| 38 | |
| 39 | /* Flags for SROM controller */ |
| 40 | PINMUX_FLAG_BANK = 3 << 0, /* bank number (0-3) */ |
| 41 | PINMUX_FLAG_16BIT = 1 << 2, /* 16-bit width */ |
| 42 | }; |
| 43 | |
| 44 | /** |
| 45 | * Configures the pinmux for a particular peripheral. |
| 46 | * |
| 47 | * Each gpio can be configured in many different ways (4 bits on exynos) |
| 48 | * such as "input", "output", "special function", "external interrupt" |
| 49 | * etc. This function will configure the peripheral pinmux along with |
| 50 | * pull-up/down and drive strength. |
| 51 | * |
| 52 | * @param peripheral peripheral to be configured |
| 53 | * @param flags configure flags |
| 54 | * @return 0 if ok, -1 on error (e.g. unsupported peripheral) |
| 55 | */ |
| 56 | int exynos_pinmux_config(int peripheral, int flags); |
| 57 | |
| 58 | #endif |