projects / linux-2.6-block.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 | ||
| 28 | #include <mach/hardware.h> | |
| 29 | #include <asm/mach/map.h> | |
| 30 | #include <mach/iomux-v3.h> | |
| 31 | ||
| 6134b2cb | 32 | static void __iomem *base; |
| bca6ef1e | 33 | |
| bca6ef1e | 34 | /* |
| 8f5260c8 | 35 | * configures a single pad in the iomuxer |
| bca6ef1e | 36 | */ |
| 96f3e256 | 37 | int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad) |
| bca6ef1e | 38 | { |
| 96f3e256 LW |
39 | u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT; |
| 40 | u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT; | |
| 41 | u32 sel_input_ofs = (pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT; | |
| 42 | u32 sel_input = (pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT; | |
| 43 | u32 pad_ctrl_ofs = (pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT; | |
| 44 | u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT; | |
| bca6ef1e | 45 | |
| 96f3e256 LW |
46 | if (mux_ctrl_ofs) |
| 47 | __raw_writel(mux_mode, base + mux_ctrl_ofs); | |
| 48 | ||
| 49 | if (sel_input_ofs) | |
| 50 | __raw_writel(sel_input, base + sel_input_ofs); | |
| 51 | ||
| 52 | if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs) | |
| 53 | __raw_writel(pad_ctrl, base + pad_ctrl_ofs); | |
| bca6ef1e | 54 | |
| bca6ef1e SH |
55 | return 0; |
| 56 | } | |
| 57 | EXPORT_SYMBOL(mxc_iomux_v3_setup_pad); | |
| 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 SH |
72 | } |
| 73 | EXPORT_SYMBOL(mxc_iomux_v3_setup_multiple_pads); | |
| 74 | ||
| 6134b2cb SH |
75 | void mxc_iomux_v3_init(void __iomem *iomux_v3_base) |
| 76 | { | |
| 77 | base = iomux_v3_base; | |
| 78 | } |