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Commit 9eedbdf1 authored by Sascha Hauer's avatar Sascha Hauer
Browse files

MXC: Add a digital audio multiplexer driver 



Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent d8d982b1

arch/arm/mach-mx2/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -6,11 +6,13 @@ choice 


config MACH_MX21

	bool "i.MX21 support"

	select ARCH_MXC_AUDMUX_V1

	help

	  This enables support for Freescale's MX2 based i.MX21 processor.



config MACH_MX27

	bool "i.MX27 support"

	select ARCH_MXC_AUDMUX_V1

	help

	  This enables support for Freescale's MX2 based i.MX27 processor.

arch/arm/mach-mx3/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -2,11 +2,13 @@ if ARCH_MX3 


config ARCH_MX31

	select ARCH_HAS_RNGA

	select ARCH_MXC_AUDMUX_V2

	bool



config ARCH_MX35

	bool

	select ARCH_MXC_IOMUX_V3

	select ARCH_MXC_AUDMUX_V2



comment "MX3 platforms:"

arch/arm/plat-mxc/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -78,4 +78,11 @@ config ARCH_HAS_RNGA 


config ARCH_MXC_IOMUX_V3

	bool



config ARCH_MXC_AUDMUX_V1

	bool



config ARCH_MXC_AUDMUX_V2

	bool



endif

arch/arm/plat-mxc/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -10,3 +10,5 @@ obj-$(CONFIG_ARCH_MX2) += iomux-mx1-mx2.o dma-mx1-mx2.o 
obj-$(CONFIG_ARCH_MXC_IOMUX_V3) += iomux-v3.o

obj-$(CONFIG_MXC_PWM)  += pwm.o

obj-$(CONFIG_MXC_ULPI) += ulpi.o

obj-$(CONFIG_ARCH_MXC_AUDMUX_V1) += audmux-v1.o

obj-$(CONFIG_ARCH_MXC_AUDMUX_V2) += audmux-v2.o

arch/arm/plat-mxc/audmux-v1.c

0 → 100644
+53 −0
Original line number Diff line number Diff line 
/*

 * 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 void __iomem *audmux_base;



#define MXC_AUDMUX_V1_PCR(x)	((x) * 4)



int mxc_audmux_v1_configure_port(unsigned int port, unsigned int pcr)

{

	if (!audmux_base) {

		printk("%s: not configured\n", __func__);

		return -ENOSYS;

	}



	writel(pcr, audmux_base + MXC_AUDMUX_V1_PCR(port));



	return 0;

}

EXPORT_SYMBOL_GPL(mxc_audmux_v1_configure_port);



static int mxc_audmux_v1_init(void)

{

	if (cpu_is_mx27() || cpu_is_mx21())

		audmux_base = IO_ADDRESS(AUDMUX_BASE_ADDR);

	return 0;

}



postcore_initcall(mxc_audmux_v1_init);