LXR linux/arch/arm/mach-s3c/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 "regs-gpio.h"
  16#include "gpio-samsung.h"
  17#include "gpio-cfg.h"
  18
  19#include <linux/platform_data/asoc-s3c24xx_simtec.h>
  20#include "devs.h"
  21
  22#include "bast.h"
  23#include "simtec.h"
  24
  25/* platform ops for audio */
  26
  27static void simtec_audio_startup_lrroute(void)
  28{
  29        unsigned int tmp;
  30        unsigned long flags;
  31
  32        local_irq_save(flags);
  33
  34        tmp = __raw_readb(BAST_VA_CTRL1);
  35        tmp &= ~BAST_CPLD_CTRL1_LRMASK;
  36        tmp |= BAST_CPLD_CTRL1_LRCDAC;
  37        __raw_writeb(tmp, BAST_VA_CTRL1);
  38
  39        local_irq_restore(flags);
  40}
  41
  42static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata;
  43static char our_name[32];
  44
  45static struct platform_device simtec_audio_dev = {
  46        .name   = our_name,
  47        .id     = -1,
  48        .dev    = {
  49                .parent         = &s3c_device_iis.dev,
  50                .platform_data  = &simtec_audio_platdata,
  51        },
  52};
  53
  54int __init simtec_audio_add(const char *name, bool has_lr_routing,
  55                            struct s3c24xx_audio_simtec_pdata *spd)
  56{
  57        if (!name)
  58                name = "tlv320aic23";
  59
  60        snprintf(our_name, sizeof(our_name)-1, "s3c24xx-simtec-%s", name);
  61
  62        /* copy platform data so the source can be __initdata */
  63        if (spd)
  64                simtec_audio_platdata = *spd;
  65
  66        if (has_lr_routing)
  67                simtec_audio_platdata.startup = simtec_audio_startup_lrroute;
  68
  69        /* Configure the I2S pins (GPE0...GPE4) in correct mode */
  70        s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
  71                              S3C_GPIO_PULL_NONE);
  72
  73        platform_device_register(&s3c_device_iis);
  74        platform_device_register(&simtec_audio_dev);
  75        return 0;
  76}
  77