arch/arm/mach-s3c24xx/simtec-audio.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (c) 2009 Simtec Electronics
   4 //      http://armlinux.simtec.co.uk/
   5 //      Ben Dooks <ben@simtec.co.uk>
   6 //
   7 // Audio setup for various Simtec S3C24XX implementations
   8
   9 #include <linux/kernel.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/init.h>
  12 #include <linux/device.h>
  13 #include <linux/io.h>
  14
  15 #include <mach/hardware.h>
  16 #include <mach/regs-gpio.h>
  17
  18 #include <linux/platform_data/asoc-s3c24xx_simtec.h>
  19 #include <plat/devs.h>
  20
  21 #include "bast.h"
  22 #include "simtec.h"
  23
  24 /* platform ops for audio */
  25
  26 static void simtec_audio_startup_lrroute(void)
  27 {
  28         unsigned int tmp;
  29         unsigned long flags;
  30
  31         local_irq_save(flags);
  32
  33         tmp = __raw_readb(BAST_VA_CTRL1);
  34         tmp &= ~BAST_CPLD_CTRL1_LRMASK;
  35         tmp |= BAST_CPLD_CTRL1_LRCDAC;
  36         __raw_writeb(tmp, BAST_VA_CTRL1);
  37
  38         local_irq_restore(flags);
  39 }
  40
  41 static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata;
  42 static char our_name[32];
  43
  44 static struct platform_device simtec_audio_dev = {
  45         .name   = our_name,
  46         .id     = -1,
  47         .dev    = {
  48                 .parent         = &s3c_device_iis.dev,
  49                 .platform_data  = &simtec_audio_platdata,
  50         },
  51 };
  52
  53 int __init simtec_audio_add(const char *name, bool has_lr_routing,
  54                             struct s3c24xx_audio_simtec_pdata *spd)
  55 {
  56         if (!name)
  57                 name = "tlv320aic23";
  58
  59         snprintf(our_name, sizeof(our_name)-1, "s3c24xx-simtec-%s", name);
  60
  61         /* copy platform data so the source can be __initdata */
  62         if (spd)
  63                 simtec_audio_platdata = *spd;
  64
  65         if (has_lr_routing)
  66                 simtec_audio_platdata.startup = simtec_audio_startup_lrroute;
  67
  68         platform_device_register(&s3c_device_iis);
  69         platform_device_register(&simtec_audio_dev);
  70         return 0;
  71 }