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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/*
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* Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
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*
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* Initial development of this code was funded by
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* Phytec Messtechnik GmbH, http://www.phytec.de
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/clk.h>
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#include <mach/audmux.h>
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#include <mach/hardware.h>
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static void __iomem *audmux_base;
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static unsigned char port_mapping[] = {
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0x0, 0x4, 0x8, 0x10, 0x14, 0x1c,
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};
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int mxc_audmux_v1_configure_port(unsigned int port, unsigned int pcr)
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{
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if (!audmux_base) {
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printk("%s: not configured\n", __func__);
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return -ENOSYS;
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}
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if (port >= ARRAY_SIZE(port_mapping))
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return -EINVAL;
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writel(pcr, audmux_base + port_mapping[port]);
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return 0;
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}
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EXPORT_SYMBOL_GPL(mxc_audmux_v1_configure_port);
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static int mxc_audmux_v1_init(void)
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{
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#ifdef CONFIG_MACH_MX21
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if (cpu_is_mx21())
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audmux_base = MX21_IO_ADDRESS(MX21_AUDMUX_BASE_ADDR);
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else
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#endif
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#ifdef CONFIG_MACH_MX27
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if (cpu_is_mx27())
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audmux_base = MX27_IO_ADDRESS(MX27_AUDMUX_BASE_ADDR);
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else
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#endif
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(void)0;
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return 0;
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}
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postcore_initcall(mxc_audmux_v1_init);
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