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author | Otavio Salvador <otavio@ossystems.com.br> | 2012-08-05 09:05:29 +0000 |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-01 14:58:17 +0200 |
commit | 3a0398d7b916eed6ae80427626f0434690ca0da0 (patch) | |
tree | 6df395fa52909a8977f38df93533a1a5a701df9d /arch/arm/cpu/arm926ejs/mx28/iomux.c | |
parent | d369d53d9c438a5d0df157586dcd072de48d9631 (diff) | |
download | u-boot-imx-3a0398d7b916eed6ae80427626f0434690ca0da0.zip u-boot-imx-3a0398d7b916eed6ae80427626f0434690ca0da0.tar.gz u-boot-imx-3a0398d7b916eed6ae80427626f0434690ca0da0.tar.bz2 |
mxs: reorganize source directory for easy sharing of code in i.MXS SoCs
Most code can be shared between i.MX23 and i.MX28 as both are from
i.MXS family; this source directory structure makes easy to share code
among them.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Acked-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch/arm/cpu/arm926ejs/mx28/iomux.c')
-rw-r--r-- | arch/arm/cpu/arm926ejs/mx28/iomux.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx28/iomux.c b/arch/arm/cpu/arm926ejs/mx28/iomux.c deleted file mode 100644 index 12916b6..0000000 --- a/arch/arm/cpu/arm926ejs/mx28/iomux.c +++ /dev/null @@ -1,109 +0,0 @@ -/* - * Copyright 2004-2006,2010 Freescale Semiconductor, Inc. All Rights Reserved. - * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de> - * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH, - * <armlinux@phytec.de> - * - * 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/errno.h> -#include <asm/io.h> -#include <asm/arch/clock.h> -#include <asm/arch/iomux.h> -#include <asm/arch/imx-regs.h> - -#if defined(CONFIG_MX23) -#define DRIVE_OFFSET 0x200 -#define PULL_OFFSET 0x400 -#elif defined(CONFIG_MX28) -#define DRIVE_OFFSET 0x300 -#define PULL_OFFSET 0x600 -#else -#error "Please select CONFIG_MX23 or CONFIG_MX28" -#endif - -/* - * configures a single pad in the iomuxer - */ -int mxs_iomux_setup_pad(iomux_cfg_t pad) -{ - u32 reg, ofs, bp, bm; - void *iomux_base = (void *)MXS_PINCTRL_BASE; - struct mx28_register_32 *mxs_reg; - - /* muxsel */ - ofs = 0x100; - ofs += PAD_BANK(pad) * 0x20 + PAD_PIN(pad) / 16 * 0x10; - bp = PAD_PIN(pad) % 16 * 2; - bm = 0x3 << bp; - reg = readl(iomux_base + ofs); - reg &= ~bm; - reg |= PAD_MUXSEL(pad) << bp; - writel(reg, iomux_base + ofs); - - /* drive */ - ofs = DRIVE_OFFSET; - ofs += PAD_BANK(pad) * 0x40 + PAD_PIN(pad) / 8 * 0x10; - /* mA */ - if (PAD_MA_VALID(pad)) { - bp = PAD_PIN(pad) % 8 * 4; - bm = 0x3 << bp; - reg = readl(iomux_base + ofs); - reg &= ~bm; - reg |= PAD_MA(pad) << bp; - writel(reg, iomux_base + ofs); - } - /* vol */ - if (PAD_VOL_VALID(pad)) { - bp = PAD_PIN(pad) % 8 * 4 + 2; - mxs_reg = (struct mx28_register_32 *)(iomux_base + ofs); - if (PAD_VOL(pad)) - writel(1 << bp, &mxs_reg->reg_set); - else - writel(1 << bp, &mxs_reg->reg_clr); - } - - /* pull */ - if (PAD_PULL_VALID(pad)) { - ofs = PULL_OFFSET; - ofs += PAD_BANK(pad) * 0x10; - bp = PAD_PIN(pad); - mxs_reg = (struct mx28_register_32 *)(iomux_base + ofs); - if (PAD_PULL(pad)) - writel(1 << bp, &mxs_reg->reg_set); - else - writel(1 << bp, &mxs_reg->reg_clr); - } - - return 0; -} - -int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count) -{ - const iomux_cfg_t *p = pad_list; - int i; - int ret; - - for (i = 0; i < count; i++) { - ret = mxs_iomux_setup_pad(*p); - if (ret) - return ret; - p++; - } - - return 0; -} |