mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-28 07:31:15 +00:00
5ae28d2db2
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com> Signed-off-by: Stefano Babic <sbabic@denx.de>
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
|
|
* Based on the iomux-v3.c from Linux kernel:
|
|
* Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
|
|
* Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
|
|
* <armlinux@phytec.de>
|
|
*
|
|
* Copyright (C) 2004-2011 Freescale Semiconductor, Inc.
|
|
*
|
|
* 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 <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/imx-regs.h>
|
|
#include <asm/imx-common/iomux-v3.h>
|
|
|
|
static void *base = (void *)IOMUXC_BASE_ADDR;
|
|
|
|
/*
|
|
* configures a single pad in the iomuxer
|
|
*/
|
|
int imx_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)
|
|
__raw_writel(mux_mode, base + mux_ctrl_ofs);
|
|
|
|
if (sel_input_ofs)
|
|
__raw_writel(sel_input, base + sel_input_ofs);
|
|
|
|
if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
|
|
__raw_writel(pad_ctrl, base + pad_ctrl_ofs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t const *pad_list,
|
|
unsigned count)
|
|
{
|
|
iomux_v3_cfg_t const *p = pad_list;
|
|
int i;
|
|
int ret;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
ret = imx_iomux_v3_setup_pad(*p);
|
|
if (ret)
|
|
return ret;
|
|
p++;
|
|
}
|
|
return 0;
|
|
}
|