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  */
  30static struct 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        .owner = THIS_MODULE,
  56        .probe = NULL,
  57        .dai_link = mop500_dai_links,
  58        .num_links = ARRAY_SIZE(mop500_dai_links),
  59};
  60
  61static void mop500_of_node_put(void)
  62{
  63        int i;
  64
  65        for (i = 0; i < 2; i++) {
  66                if (mop500_dai_links[i].cpu_of_node)
  67                        of_node_put((struct device_node *)
  68                                mop500_dai_links[i].cpu_of_node);
  69                if (mop500_dai_links[i].codec_of_node)
  70                        of_node_put((struct device_node *)
  71                                mop500_dai_links[i].codec_of_node);
  72        }
  73}
  74
  75static int mop500_of_probe(struct platform_device *pdev,
  76                           struct device_node *np)
  77{
  78        struct device_node *codec_np, *msp_np[2];
  79        int i;
  80
  81        msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
  82        msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
  83        codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
  84
  85        if (!(msp_np[0] && msp_np[1] && codec_np)) {
  86                dev_err(&pdev->dev, "Phandle missing or invalid\n");
  87                mop500_of_node_put();
  88                return -EINVAL;
  89        }
  90
  91        for (i = 0; i < 2; i++) {
  92                mop500_dai_links[i].cpu_of_node = msp_np[i];
  93                mop500_dai_links[i].cpu_dai_name = NULL;
  94                mop500_dai_links[i].codec_of_node = codec_np;
  95                mop500_dai_links[i].codec_name = NULL;
  96        }
  97
  98        snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
  99
 100        return 0;
 101}
 102
 103static int mop500_probe(struct platform_device *pdev)
 104{
 105        struct device_node *np = pdev->dev.of_node;
 106        int ret;
 107
 108        dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
 109
 110        mop500_card.dev = &pdev->dev;
 111
 112        if (np) {
 113                ret = mop500_of_probe(pdev, np);
 114                if (ret)
 115                        return ret;
 116        }
 117
 118        dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
 119                __func__, mop500_card.name);
 120        platform_set_drvdata(pdev, &mop500_card);
 121
 122        snd_soc_card_set_drvdata(&mop500_card, NULL);
 123
 124        dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
 125                __func__, mop500_card.name, mop500_card.num_links);
 126        dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
 127                __func__, mop500_card.name, mop500_card.dai_link[0].name);
 128        dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
 129                __func__, mop500_card.name,
 130                mop500_card.dai_link[0].stream_name);
 131
 132        ret = snd_soc_register_card(&mop500_card);
 133        if (ret)
 134                dev_err(&pdev->dev,
 135                        "Error: snd_soc_register_card failed (%d)!\n", ret);
 136
 137        return ret;
 138}
 139
 140static int mop500_remove(struct platform_device *pdev)
 141{
 142        struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
 143
 144        pr_debug("%s: Enter.\n", __func__);
 145
 146        snd_soc_unregister_card(mop500_card);
 147        mop500_ab8500_remove(mop500_card);
 148        mop500_of_node_put();
 149
 150        return 0;
 151}
 152
 153static const struct of_device_id snd_soc_mop500_match[] = {
 154        { .compatible = "stericsson,snd-soc-mop500", },
 155        {},
 156};
 157
 158static struct platform_driver snd_soc_mop500_driver = {
 159        .driver = {
 160                .owner = THIS_MODULE,
 161                .name = "snd-soc-mop500",
 162                .of_match_table = snd_soc_mop500_match,
 163        },
 164        .probe = mop500_probe,
 165        .remove = mop500_remove,
 166};
 167
 168module_platform_driver(snd_soc_mop500_driver);
 169