1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved.
4 * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
5 * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
8 #include <linux/errno.h>
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/string.h>
13 #include <linux/gpio.h>
15 #include <asm/mach/map.h>
20 static void __iomem *base;
23 * configures a single pad in the iomuxer
25 int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad)
27 u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
28 u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
29 u32 sel_input_ofs = (pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
30 u32 sel_input = (pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
31 u32 pad_ctrl_ofs = (pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT;
32 u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
35 imx_writel(mux_mode, base + mux_ctrl_ofs);
38 imx_writel(sel_input, base + sel_input_ofs);
40 if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
41 imx_writel(pad_ctrl, base + pad_ctrl_ofs);
46 int mxc_iomux_v3_setup_multiple_pads(const iomux_v3_cfg_t *pad_list,
49 const iomux_v3_cfg_t *p = pad_list;
53 for (i = 0; i < count; i++) {
54 ret = mxc_iomux_v3_setup_pad(*p);
62 void mxc_iomux_v3_init(void __iomem *iomux_v3_base)