LXR linux/sound/soc/ux500/mop500.c

   1/*
   2 * Copyright (C) ST-Ericsson SA 2012
   3 *
   4 * Author: Ola Lilja (ola.o.lilja@stericsson.com)
   5 *         for ST-Ericsson.
   6 *
   7 * License terms:
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License version 2 as published
  11 * by the Free Software Foundation.
  12 */
  13
  14#include <asm/mach-types.h>
  15
  16#include <linux/module.h>
  17#include <linux/io.h>
  18#include <linux/spi/spi.h>
  19#include <linux/of.h>
  20
  21#include <sound/soc.h>
  22#include <sound/initval.h>
  23
  24#include "ux500_pcm.h"
  25#include "ux500_msp_dai.h"
  26
  27#include "mop500_ab8500.h"
  28
  29/* Define the whole MOP500 soundcard, linking platform to the codec-drivers  */
  30struct snd_soc_dai_link mop500_dai_links[] = {
  31        {
  32                .name = "ab8500_0",
  33                .stream_name = "ab8500_0",
  34                .cpu_dai_name = "ux500-msp-i2s.1",
  35                .codec_dai_name = "ab8500-codec-dai.0",
  36                .platform_name = "ux500-msp-i2s.1",
  37                .codec_name = "ab8500-codec.0",
  38                .init = mop500_ab8500_machine_init,
  39                .ops = mop500_ab8500_ops,
  40        },
  41        {
  42                .name = "ab8500_1",
  43                .stream_name = "ab8500_1",
  44                .cpu_dai_name = "ux500-msp-i2s.3",
  45                .codec_dai_name = "ab8500-codec-dai.1",
  46                .platform_name = "ux500-msp-i2s.3",
  47                .codec_name = "ab8500-codec.0",
  48                .init = NULL,
  49                .ops = mop500_ab8500_ops,
  50        },
  51};
  52
  53static struct snd_soc_card mop500_card = {
  54        .name = "MOP500-card",
  55        .probe = NULL,
  56        .dai_link = mop500_dai_links,
  57        .num_links = ARRAY_SIZE(mop500_dai_links),
  58};
  59
  60static void mop500_of_node_put(void)
  61{
  62        int i;
  63
  64        for (i = 0; i < 2; i++) {
  65                if (mop500_dai_links[i].cpu_of_node)
  66                        of_node_put((struct device_node *)
  67                                mop500_dai_links[i].cpu_of_node);
  68                if (mop500_dai_links[i].codec_of_node)
  69                        of_node_put((struct device_node *)
  70                                mop500_dai_links[i].codec_of_node);
  71        }
  72}
  73
  74static int mop500_of_probe(struct platform_device *pdev,
  75                           struct device_node *np)
  76{
  77        struct device_node *codec_np, *msp_np[2];
  78        int i;
  79
  80        msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
  81        msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
  82        codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
  83
  84        if (!(msp_np[0] && msp_np[1] && codec_np)) {
  85                dev_err(&pdev->dev, "Phandle missing or invalid\n");
  86                mop500_of_node_put();
  87                return -EINVAL;
  88        }
  89
  90        for (i = 0; i < 2; i++) {
  91                mop500_dai_links[i].cpu_of_node = msp_np[i];
  92                mop500_dai_links[i].cpu_dai_name = NULL;
  93                mop500_dai_links[i].codec_of_node = codec_np;
  94                mop500_dai_links[i].codec_name = NULL;
  95        }
  96
  97        snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
  98
  99        return 0;
 100}
 101
 102static int mop500_probe(struct platform_device *pdev)
 103{
 104        struct device_node *np = pdev->dev.of_node;
 105        int ret;
 106
 107        dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
 108
 109        mop500_card.dev = &pdev->dev;
 110
 111        if (np) {
 112                ret = mop500_of_probe(pdev, np);
 113                if (ret)
 114                        return ret;
 115        }
 116
 117        dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
 118                __func__, mop500_card.name);
 119        platform_set_drvdata(pdev, &mop500_card);
 120
 121        snd_soc_card_set_drvdata(&mop500_card, NULL);
 122
 123        dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
 124                __func__, mop500_card.name, mop500_card.num_links);
 125        dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
 126                __func__, mop500_card.name, mop500_card.dai_link[0].name);
 127        dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
 128                __func__, mop500_card.name,
 129                mop500_card.dai_link[0].stream_name);
 130
 131        ret = snd_soc_register_card(&mop500_card);
 132        if (ret)
 133                dev_err(&pdev->dev,
 134                        "Error: snd_soc_register_card failed (%d)!\n", ret);
 135
 136        return ret;
 137}
 138
 139static int mop500_remove(struct platform_device *pdev)
 140{
 141        struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
 142
 143        pr_debug("%s: Enter.\n", __func__);
 144
 145        snd_soc_unregister_card(mop500_card);
 146        mop500_ab8500_remove(mop500_card);
 147        mop500_of_node_put();
 148
 149        return 0;
 150}
 151
 152static const struct of_device_id snd_soc_mop500_match[] = {
 153        { .compatible = "stericsson,snd-soc-mop500", },
 154        {},
 155};
 156
 157static struct platform_driver snd_soc_mop500_driver = {
 158        .driver = {
 159                .owner = THIS_MODULE,
 160                .name = "snd-soc-mop500",
 161                .of_match_table = snd_soc_mop500_match,
 162        },
 163        .probe = mop500_probe,
 164        .remove = mop500_remove,
 165};
 166
 167module_platform_driver(snd_soc_mop500_driver);
 168