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simtec-audio.c

/* linux/arch/arm/plat-s3c24xx/simtec-audio.c
 *
 * Copyright (c) 2009 Simtec Electronics
 *    http://armlinux.simtec.co.uk/
 *    Ben Dooks <ben@simtec.co.uk>
 *
 * Audio setup for various Simtec S3C24XX implementations
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/io.h>

#include <mach/bast-map.h>
#include <mach/bast-irq.h>
#include <mach/bast-cpld.h>

#include <mach/hardware.h>
#include <mach/regs-gpio.h>

#include <plat/audio-simtec.h>
#include <plat/devs.h>

/* platform ops for audio */

static void simtec_audio_startup_lrroute(void)
{
      unsigned int tmp;
      unsigned long flags;

      local_irq_save(flags);

      tmp = __raw_readb(BAST_VA_CTRL1);
      tmp &= ~BAST_CPLD_CTRL1_LRMASK;
      tmp |= BAST_CPLD_CTRL1_LRCDAC;
      __raw_writeb(tmp, BAST_VA_CTRL1);

      local_irq_restore(flags);
}

static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata;
static char our_name[32];

static struct platform_device simtec_audio_dev = {
      .name = our_name,
      .id   = -1,
      .dev  = {
            .parent           = &s3c_device_iis.dev,
            .platform_data    = &simtec_audio_platdata,
      },
};

int __init simtec_audio_add(const char *name, bool has_lr_routing,
                      struct s3c24xx_audio_simtec_pdata *spd)
{
      if (!name)
            name = "tlv320aic23";

      snprintf(our_name, sizeof(our_name)-1, "s3c24xx-simtec-%s", name);

      /* copy platform data so the source can be __initdata */
      if (spd)
            simtec_audio_platdata = *spd;

      if (has_lr_routing)
            simtec_audio_platdata.startup = simtec_audio_startup_lrroute;

      platform_device_register(&s3c_device_iis);
      platform_device_register(&simtec_audio_dev);
      return 0;
}

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