forked from Minki/linux
2c799cef4d
This is needed to minimize io.h so the SoC specific io.h for ARMs can removed. Note that minimal driver changes for DSS and RNG are needed to include cpu.h for SoC detection macros. Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Matt Mackall <mpm@selenic.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Tony Lindgren <tony@atomide.com>
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/*
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* linux/arch/arm/plat-omap/mux.c
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*
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* Utility to set the Omap MUX and PULL_DWN registers from a table in mux.h
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*
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* Copyright (C) 2003 - 2008 Nokia Corporation
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*
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* Written by Tony Lindgren
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include <linux/spinlock.h>
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#include <asm/system.h>
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#include <plat/cpu.h>
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#include <plat/mux.h>
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#ifdef CONFIG_OMAP_MUX
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static struct omap_mux_cfg *mux_cfg;
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int __init omap_mux_register(struct omap_mux_cfg *arch_mux_cfg)
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{
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if (!arch_mux_cfg || !arch_mux_cfg->pins || arch_mux_cfg->size == 0
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|| !arch_mux_cfg->cfg_reg) {
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printk(KERN_ERR "Invalid pin table\n");
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return -EINVAL;
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}
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mux_cfg = arch_mux_cfg;
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return 0;
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}
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/*
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* Sets the Omap MUX and PULL_DWN registers based on the table
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*/
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int __init_or_module omap_cfg_reg(const unsigned long index)
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{
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struct pin_config *reg;
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if (!cpu_class_is_omap1()) {
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printk(KERN_ERR "mux: Broken omap_cfg_reg(%lu) entry\n",
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index);
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WARN_ON(1);
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return -EINVAL;
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}
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if (mux_cfg == NULL) {
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printk(KERN_ERR "Pin mux table not initialized\n");
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return -ENODEV;
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}
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if (index >= mux_cfg->size) {
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printk(KERN_ERR "Invalid pin mux index: %lu (%lu)\n",
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index, mux_cfg->size);
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dump_stack();
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return -ENODEV;
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}
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reg = (struct pin_config *)&mux_cfg->pins[index];
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if (!mux_cfg->cfg_reg)
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return -ENODEV;
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return mux_cfg->cfg_reg(reg);
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}
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EXPORT_SYMBOL(omap_cfg_reg);
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#else
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#define omap_mux_init() do {} while(0)
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#define omap_cfg_reg(x) do {} while(0)
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#endif /* CONFIG_OMAP_MUX */
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