/*
|
* Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved.
|
* Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
|
* Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
|
* <armlinux@phytec.de>
|
*
|
* 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., 51 Franklin Street, Fifth Floor, Boston,
|
* MA 02110-1301, USA.
|
*/
|
#include <linux/errno.h>
|
#include <linux/init.h>
|
#include <linux/kernel.h>
|
#include <linux/module.h>
|
#include <linux/string.h>
|
#include <linux/gpio.h>
|
|
#include <asm/mach/map.h>
|
|
#include "hardware.h"
|
#include "iomux-v3.h"
|
|
static void __iomem *base;
|
|
/*
|
* configures a single pad in the iomuxer
|
*/
|
int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad)
|
{
|
u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
|
u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
|
u32 sel_input_ofs = (pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
|
u32 sel_input = (pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
|
u32 pad_ctrl_ofs = (pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT;
|
u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
|
|
if (mux_ctrl_ofs)
|
imx_writel(mux_mode, base + mux_ctrl_ofs);
|
|
if (sel_input_ofs)
|
imx_writel(sel_input, base + sel_input_ofs);
|
|
if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
|
imx_writel(pad_ctrl, base + pad_ctrl_ofs);
|
|
return 0;
|
}
|
|
int mxc_iomux_v3_setup_multiple_pads(const iomux_v3_cfg_t *pad_list,
|
unsigned count)
|
{
|
const iomux_v3_cfg_t *p = pad_list;
|
int i;
|
int ret;
|
|
for (i = 0; i < count; i++) {
|
ret = mxc_iomux_v3_setup_pad(*p);
|
if (ret)
|
return ret;
|
p++;
|
}
|
return 0;
|
}
|
|
void mxc_iomux_v3_init(void __iomem *iomux_v3_base)
|
{
|
base = iomux_v3_base;
|
}
|
