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bca6ef1e SH |
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 | ||
bca6ef1e | 28 | #include <asm/mach/map.h> |
267dd34c | 29 | |
50f2de61 | 30 | #include "hardware.h" |
267dd34c | 31 | #include "iomux-v3.h" |
bca6ef1e | 32 | |
6134b2cb | 33 | static void __iomem *base; |
bca6ef1e | 34 | |
bca6ef1e | 35 | /* |
8f5260c8 | 36 | * configures a single pad in the iomuxer |
bca6ef1e | 37 | */ |
96f3e256 | 38 | int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad) |
bca6ef1e | 39 | { |
96f3e256 LW |
40 | u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT; |
41 | u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT; | |
42 | u32 sel_input_ofs = (pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT; | |
43 | u32 sel_input = (pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT; | |
44 | u32 pad_ctrl_ofs = (pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT; | |
45 | u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT; | |
bca6ef1e | 46 | |
96f3e256 LW |
47 | if (mux_ctrl_ofs) |
48 | __raw_writel(mux_mode, base + mux_ctrl_ofs); | |
49 | ||
50 | if (sel_input_ofs) | |
51 | __raw_writel(sel_input, base + sel_input_ofs); | |
52 | ||
53 | if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs) | |
54 | __raw_writel(pad_ctrl, base + pad_ctrl_ofs); | |
bca6ef1e | 55 | |
bca6ef1e SH |
56 | return 0; |
57 | } | |
bca6ef1e | 58 | |
8f5260c8 | 59 | int mxc_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t *pad_list, unsigned count) |
bca6ef1e | 60 | { |
8f5260c8 | 61 | iomux_v3_cfg_t *p = pad_list; |
bca6ef1e SH |
62 | int i; |
63 | int ret; | |
64 | ||
65 | for (i = 0; i < count; i++) { | |
96f3e256 | 66 | ret = mxc_iomux_v3_setup_pad(*p); |
bca6ef1e | 67 | if (ret) |
654166d6 | 68 | return ret; |
bca6ef1e SH |
69 | p++; |
70 | } | |
71 | return 0; | |
bca6ef1e | 72 | } |
bca6ef1e | 73 | |
6134b2cb SH |
74 | void mxc_iomux_v3_init(void __iomem *iomux_v3_base) |
75 | { | |
76 | base = iomux_v3_base; | |
77 | } |