projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | 47 | if (mux_ctrl_ofs) |
| c553138f | 48 | imx_writel(mux_mode, base + mux_ctrl_ofs); |
| 96f3e256 LW |
49 | |
| 50 | if (sel_input_ofs) | |
| c553138f | 51 | imx_writel(sel_input, base + sel_input_ofs); |
| 96f3e256 LW |
52 | |
| 53 | if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs) | |
| c553138f | 54 | imx_writel(pad_ctrl, base + pad_ctrl_ofs); |
| bca6ef1e | 55 | |
| bca6ef1e SH |
56 | return 0; |
| 57 | } | |
| bca6ef1e | 58 | |
| 9fece9bd UKK |
59 | int mxc_iomux_v3_setup_multiple_pads(const iomux_v3_cfg_t *pad_list, |
| 60 | unsigned count) | |
| bca6ef1e | 61 | { |
| 9fece9bd | 62 | const iomux_v3_cfg_t *p = pad_list; |
| bca6ef1e SH |
63 | int i; |
| 64 | int ret; | |
| 65 | ||
| 66 | for (i = 0; i < count; i++) { | |
| 96f3e256 | 67 | ret = mxc_iomux_v3_setup_pad(*p); |
| bca6ef1e | 68 | if (ret) |
| 654166d6 | 69 | return ret; |
| bca6ef1e SH |
70 | p++; |
| 71 | } | |
| 72 | return 0; | |
| bca6ef1e | 73 | } |
| bca6ef1e | 74 | |
| 6134b2cb SH |
75 | void mxc_iomux_v3_init(void __iomem *iomux_v3_base) |
| 76 | { | |
| 77 | base = iomux_v3_base; | |
| 78 | } |