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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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9330899e0f
Misc clean-up for the mux code and remove some unnecessary ifdefs. Patch changes debug function so it can be used on both 24xx and 34xx. Changes are mostly for omap2, but patch also cleans up some omap1 and common mux code. Signed-off-by: Tony Lindgren <tony@atomide.com>
81 lines
2.1 KiB
C
81 lines
2.1 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 <asm/system.h>
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#include <asm/io.h>
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#include <linux/spinlock.h>
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#include <asm/arch/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 (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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