blob: 6f21096086fdefb5000c6d10a1e5744c0698b318 (
plain) (
tree)
|
|
/*
* Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
*
* Initial development of this code was funded by
* Phytec Messtechnik GmbH, http://www.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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <mach/audmux.h>
#include <mach/hardware.h>
static struct clk *audmux_clk;
static void __iomem *audmux_base;
#define MXC_AUDMUX_V2_PTCR(x) ((x) * 8)
#define MXC_AUDMUX_V2_PDCR(x) ((x) * 8 + 4)
int mxc_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
unsigned int pdcr)
{
if (!audmux_base)
return -ENOSYS;
if (audmux_clk)
clk_enable(audmux_clk);
writel(ptcr, audmux_base + MXC_AUDMUX_V2_PTCR(port));
writel(pdcr, audmux_base + MXC_AUDMUX_V2_PDCR(port));
if (audmux_clk)
clk_disable(audmux_clk);
return 0;
}
EXPORT_SYMBOL_GPL(mxc_audmux_v2_configure_port);
static int mxc_audmux_v2_init(void)
{
int ret;
if (cpu_is_mx35()) {
audmux_clk = clk_get(NULL, "audmux");
if (IS_ERR(audmux_clk)) {
ret = PTR_ERR(audmux_clk);
printk(KERN_ERR "%s: cannot get clock: %d\n", __func__,
ret);
return ret;
}
}
if (cpu_is_mx31() || cpu_is_mx35())
audmux_base = IO_ADDRESS(AUDMUX_BASE_ADDR);
return 0;
}
postcore_initcall(mxc_audmux_v2_init);
|
