1/* 2 * Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved. 3 * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de> 4 * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH, 5 * <armlinux@phytec.de> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 19 * MA 02110-1301, USA. 20 */ 21#include <linux/errno.h> 22#include <linux/init.h> 23#include <linux/kernel.h> 24#include <linux/module.h> 25#include <linux/string.h> 26#include <linux/gpio.h> 27 28#include <mach/hardware.h> 29#include <asm/mach/map.h> 30#include <mach/iomux-v3.h> 31 32static void __iomem *base; 33 34/* 35 * setups a single pad in the iomuxer 36 */ 37int mxc_iomux_v3_setup_pad(struct pad_desc *pad) 38{ 39 if (pad->mux_ctrl_ofs) 40 __raw_writel(pad->mux_mode, base + pad->mux_ctrl_ofs); 41 42 if (pad->select_input_ofs) 43 __raw_writel(pad->select_input, 44 base + pad->select_input_ofs); 45 46 if (!(pad->pad_ctrl & NO_PAD_CTRL) && pad->pad_ctrl_ofs) 47 __raw_writel(pad->pad_ctrl, base + pad->pad_ctrl_ofs); 48 return 0; 49} 50EXPORT_SYMBOL(mxc_iomux_v3_setup_pad); 51 52int mxc_iomux_v3_setup_multiple_pads(struct pad_desc *pad_list, unsigned count) 53{ 54 struct pad_desc *p = pad_list; 55 int i; 56 int ret; 57 58 for (i = 0; i < count; i++) { 59 ret = mxc_iomux_v3_setup_pad(p); 60 if (ret) 61 return ret; 62 p++; 63 } 64 return 0; 65} 66EXPORT_SYMBOL(mxc_iomux_v3_setup_multiple_pads); 67 68void mxc_iomux_v3_init(void __iomem *iomux_v3_base) 69{ 70 base = iomux_v3_base; 71} 72