C++ snd_soc_register_component函数代码示例

static int msm_dai_stub_dev_probe(struct platform_device *pdev)
{
	int rc, id = -1;
	const char *stub_dev_id = "qcom,msm-dai-stub-dev-id";

	rc = of_property_read_u32(pdev->dev.of_node, stub_dev_id, &id);
	if (rc) {
		dev_err(&pdev->dev,
			"%s: missing %s in dt node\n", __func__, stub_dev_id);
		return rc;
	}

	pdev->id = id;
	dev_set_name(&pdev->dev, "%s.%d", "msm-dai-stub-dev", id);

	pr_debug("%s: dev name %s, id:%d\n", __func__,
		 dev_name(&pdev->dev), pdev->id);

	switch (id) {
	case STUB_RX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component, &msm_dai_stub_dai_rx, 1);
		break;
	case STUB_TX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component, &msm_dai_stub_dai_tx[0], 1);
		break;
	case STUB_1_TX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component, &msm_dai_stub_dai_tx[1], 1);
		break;
	case STUB_DTMF_TX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component,
			&msm_dai_stub_dtmf_tx_dai, 1);
		break;
	case STUB_HOST_RX_CAPTURE_TX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component,
			&msm_dai_stub_host_capture_tx_dai[0], 1);
		break;
	case STUB_HOST_TX_CAPTURE_TX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component,
			&msm_dai_stub_host_capture_tx_dai[1], 1);
		break;
	case STUB_HOST_RX_PLAYBACK_RX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component,
			&msm_dai_stub_host_playback_rx_dai[0], 1);
		break;
	case STUB_HOST_TX_PLAYBACK_RX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component,
			&msm_dai_stub_host_playback_rx_dai[1], 1);
		break;
	}

	return rc;
}

static int sst_byt_pcm_dev_probe(struct platform_device *pdev)
{
    struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
    int ret;

    ret = sst_byt_dsp_init(&pdev->dev, sst_pdata);
    if (ret < 0)
        return -ENODEV;

    ret = snd_soc_register_platform(&pdev->dev, &byt_soc_platform);
    if (ret < 0)
        goto err_plat;

    ret = snd_soc_register_component(&pdev->dev, &byt_dai_component,
                                     byt_dais, ARRAY_SIZE(byt_dais));
    if (ret < 0)
        goto err_comp;

    return 0;

err_comp:
    snd_soc_unregister_platform(&pdev->dev);
err_plat:
    sst_byt_dsp_free(&pdev->dev, sst_pdata);
    return ret;
}

static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
{
	int ret;

	if (pdev->id != -1) {
		dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
		return -ENXIO;
	}

	ret = pxa2xx_ac97_hw_probe(pdev);
	if (ret) {
		dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret);
		return ret;
	}

	ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops);
	if (ret != 0)
		return ret;

	/* Punt most of the init to the SoC probe; we may need the machine
	 * driver to do interesting things with the clocking to get us up
	 * and running.
	 */
	return snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
					  pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
}

static int sst_platform_probe(struct platform_device *pdev)
{
	struct sst_data *sst;
	int ret;
	struct sst_platform_data *pdata = pdev->dev.platform_data;

	pr_debug("sst_platform_probe called\n");
	sst = devm_kzalloc(&pdev->dev, sizeof(*sst), GFP_KERNEL);
	if (sst == NULL) {
		pr_err("kzalloc failed\n");
		return -ENOMEM;
	}

	sst_pdev = &pdev->dev;
	sst->pdata = pdata;
	mutex_init(&sst->lock);
	dev_set_drvdata(&pdev->dev, sst);

	ret = snd_soc_register_platform(&pdev->dev,
					 &sst_soc_platform_drv);
	if (ret) {
		pr_err("registering soc platform failed\n");
		return ret;
	}
	ret = snd_soc_register_component(&pdev->dev, &pcm_component,
				sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
	if (ret) {
		pr_err("registering cpu dais failed\n");
		snd_soc_unregister_platform(&pdev->dev);
	}

	return ret;
}

static int asoc_ssc_init(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct ssc_device *ssc = platform_get_drvdata(pdev);
	int ret;

	ret = snd_soc_register_component(dev, &atmel_ssc_component,
					 &atmel_ssc_dai, 1);
	if (ret) {
		dev_err(dev, "Could not register DAI: %d\n", ret);
		goto err;
	}

	if (ssc->pdata->use_dma)
		ret = atmel_pcm_dma_platform_register(dev);
	else
		ret = atmel_pcm_pdc_platform_register(dev);

	if (ret) {
		dev_err(dev, "Could not register PCM: %d\n", ret);
		goto err_unregister_dai;
	}

	return 0;

err_unregister_dai:
	snd_soc_unregister_component(dev);
err:
	return ret;
}

/* To do: change to register DAIs as batch */
static int msm_dai_q6_hdmi_dev_probe(struct platform_device *pdev)
{
	int rc, id;
	const char *q6_dev_id = "qcom,msm-dai-q6-dev-id";

	rc = of_property_read_u32(pdev->dev.of_node, q6_dev_id, &id);
	if (rc) {
		dev_err(&pdev->dev,
			"%s: missing %s in dt node\n", __func__, q6_dev_id);
		return rc;
	}

	pdev->id = id;
	dev_set_name(&pdev->dev, "%s.%d", "msm-dai-q6-hdmi", id);

	pr_debug("%s: dev name %s, id:%d\n", __func__,
			dev_name(&pdev->dev), pdev->id);

	switch (pdev->id) {
	case HDMI_RX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_hdmi_q6_component,
			&msm_dai_q6_hdmi_hdmi_rx_dai, 1);
		break;
	default:
		dev_err(&pdev->dev, "invalid device ID %d\n", pdev->id);
		rc = -ENODEV;
		break;
	}
	return rc;
}

static int ath79_i2s_drv_probe(struct platform_device *pdev)
{
	printk("%s\n", __FUNCTION__);
	spin_lock_init(&ath79_stereo_lock);

	ath79_stereo_reset();
	return snd_soc_register_component(&pdev->dev, &ath79_i2s_component, &ath79_i2s_dai, 1);
}

static int msm_fe_dai_dev_probe(struct platform_device *pdev)
{

	dev_dbg(&pdev->dev, "%s: dev name %s\n", __func__,
		dev_name(&pdev->dev));
	return snd_soc_register_component(&pdev->dev, &msm_fe_dai_component,
		msm_fe_dais, ARRAY_SIZE(msm_fe_dais));
}

static int au1xac97c_drvprobe(struct platform_device *pdev)
{
	int ret;
	struct resource *iores, *dmares;
	struct au1xpsc_audio_data *ctx;

	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
	if (!ctx)
		return -ENOMEM;

	mutex_init(&ctx->lock);

	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!iores)
		return -ENODEV;

	if (!devm_request_mem_region(&pdev->dev, iores->start,
				     resource_size(iores),
				     pdev->name))
		return -EBUSY;

	ctx->mmio = devm_ioremap_nocache(&pdev->dev, iores->start,
					 resource_size(iores));
	if (!ctx->mmio)
		return -EBUSY;

	dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
	if (!dmares)
		return -EBUSY;
	ctx->dmaids[SNDRV_PCM_STREAM_PLAYBACK] = dmares->start;

	dmares = platform_get_resource(pdev, IORESOURCE_DMA, 1);
	if (!dmares)
		return -EBUSY;
	ctx->dmaids[SNDRV_PCM_STREAM_CAPTURE] = dmares->start;

	/* switch it on */
	WR(ctx, AC97_ENABLE, EN_D | EN_CE);
	WR(ctx, AC97_ENABLE, EN_CE);

	ctx->cfg = CFG_RC(3) | CFG_XS(3);
	WR(ctx, AC97_CONFIG, ctx->cfg);

	platform_set_drvdata(pdev, ctx);

	ret = snd_soc_set_ac97_ops(&ac97c_bus_ops);
	if (ret)
		return ret;

	ret = snd_soc_register_component(&pdev->dev, &au1xac97c_component,
					 &au1xac97c_dai_driver, 1);
	if (ret)
		return ret;

	ac97c_workdata = ctx;
	return 0;
}

static int msm_dai_stub_dev_probe(struct platform_device *pdev)
{
	int rc, id = -1;
	const char *stub_dev_id = "qcom,msm-dai-stub-dev-id";

	rc = of_property_read_u32(pdev->dev.of_node, stub_dev_id, &id);
	if (rc) {
		dev_err(&pdev->dev,
			"%s: missing %s in dt node\n", __func__, stub_dev_id);
		return rc;
	}

	pdev->id = id;
	dev_set_name(&pdev->dev, "%s.%d", "msm-dai-stub-dev", id);

	pr_debug("%s: dev name %s, id:%d\n", __func__,
		 dev_name(&pdev->dev), pdev->id);

	switch (id) {
	case STUB_RX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component, &msm_dai_stub_dai_rx, 1);
		break;
	case STUB_TX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component, &msm_dai_stub_dai_tx[0], 1);
		break;
	case STUB_1_TX:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component, &msm_dai_stub_dai_tx[1], 1);
	case TFA9890_LEFT_STUB:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component, &msm_dai_tfa9890_stub_dai_rx[0], 1);
		break;
	case TFA9890_RIGHT_STUB:
		rc = snd_soc_register_component(&pdev->dev,
			&msm_dai_stub_component, &msm_dai_tfa9890_stub_dai_rx[1], 1);
		break;
	}

	return rc;
}

/* To do: change to register DAIs as batch */
static  int msm_dai_q6_hdmi_dev_probe(struct platform_device *pdev)
{
    int rc = 0;

    dev_info(&pdev->dev, "dev name %s dev-id %d\n",
             dev_name(&pdev->dev), pdev->id);

    rc = snd_soc_register_component(&pdev->dev, &msm_hdmi_q6_component,
                                    &msm_dai_q6_hdmi_hdmi_rx_dai, 1);
    return rc;
}

static int au1xpsc_i2s_drvprobe(struct platform_device *pdev)
{
	struct resource *iores, *dmares;
	unsigned long sel;
	struct au1xpsc_audio_data *wd;

	wd = devm_kzalloc(&pdev->dev, sizeof(struct au1xpsc_audio_data),
			  GFP_KERNEL);
	if (!wd)
		return -ENOMEM;

	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	wd->mmio = devm_ioremap_resource(&pdev->dev, iores);
	if (IS_ERR(wd->mmio))
		return PTR_ERR(wd->mmio);

	dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
	if (!dmares)
		return -EBUSY;
	wd->dmaids[SNDRV_PCM_STREAM_PLAYBACK] = dmares->start;

	dmares = platform_get_resource(pdev, IORESOURCE_DMA, 1);
	if (!dmares)
		return -EBUSY;
	wd->dmaids[SNDRV_PCM_STREAM_CAPTURE] = dmares->start;

	/* preserve PSC clock source set up by platform (dev.platform_data
	 * is already occupied by soc layer)
	 */
	sel = __raw_readl(PSC_SEL(wd)) & PSC_SEL_CLK_MASK;
	__raw_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
	wmb(); /* drain writebuffer */
	__raw_writel(PSC_SEL_PS_I2SMODE | sel, PSC_SEL(wd));
	__raw_writel(0, I2S_CFG(wd));
	wmb(); /* drain writebuffer */

	/* preconfigure: set max rx/tx fifo depths */
	wd->cfg |= PSC_I2SCFG_RT_FIFO8 | PSC_I2SCFG_TT_FIFO8;

	/* don't wait for I2S core to become ready now; clocks may not
	 * be running yet; depending on clock input for PSC a wait might
	 * time out.
	 */

	/* name the DAI like this device instance ("au1xpsc-i2s.PSCINDEX") */
	memcpy(&wd->dai_drv, &au1xpsc_i2s_dai_template,
	       sizeof(struct snd_soc_dai_driver));
	wd->dai_drv.name = dev_name(&pdev->dev);

	platform_set_drvdata(pdev, wd);

	return snd_soc_register_component(&pdev->dev, &au1xpsc_i2s_component,
					  &wd->dai_drv, 1);
}

static int spdif_out_probe(struct platform_device *pdev)
{
	struct spdif_out_dev *host;
	struct spear_spdif_platform_data *pdata;
	struct resource *res;
	int ret;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res)
		return -EINVAL;

	if (!devm_request_mem_region(&pdev->dev, res->start,
				resource_size(res), pdev->name)) {
		dev_warn(&pdev->dev, "Failed to get memory resourse\n");
		return -ENOENT;
	}

	host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL);
	if (!host) {
		dev_warn(&pdev->dev, "kzalloc fail\n");
		return -ENOMEM;
	}

	host->io_base = devm_ioremap(&pdev->dev, res->start,
				resource_size(res));
	if (!host->io_base) {
		dev_warn(&pdev->dev, "ioremap failed\n");
		return -ENOMEM;
	}

	host->clk = clk_get(&pdev->dev, NULL);
	if (IS_ERR(host->clk))
		return PTR_ERR(host->clk);

	pdata = dev_get_platdata(&pdev->dev);

	host->dma_params.data = pdata->dma_params;
	host->dma_params.addr = res->start + SPDIF_OUT_FIFO_DATA;
	host->dma_params.max_burst = 16;
	host->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
	host->dma_params.filter = pdata->filter;

	dev_set_drvdata(&pdev->dev, host);

	ret = snd_soc_register_component(&pdev->dev, &spdif_out_component,
					 &spdif_out_dai, 1);
	if (ret != 0) {
		clk_put(host->clk);
		return ret;
	}

	return 0;
}

static int rt5350_pcm_dev_probe(struct platform_device *pdev)
{
	struct rt5350_pcm *pcm;
	int ret;

	snd_dmaengine_pcm_register(&pdev->dev,
		&rt5350_dmaengine_pcm_config,
		SND_DMAENGINE_PCM_FLAG_COMPAT);

	pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
	if (!pcm)
		return -ENOMEM;

	pcm->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!pcm->mem) {
		ret = -ENOENT;
		goto err_free;
	}

	pcm->mem = request_mem_region(pcm->mem->start, resource_size(pcm->mem),
				pdev->name);
	if (!pcm->mem) {
		ret = -EBUSY;
		goto err_free;
	}

	pcm->base = ioremap_nocache(pcm->mem->start, resource_size(pcm->mem));
	if (!pcm->base) {
		ret = -EBUSY;
		goto err_release_mem_region;
	}

	pcm->phys_base = pcm->mem->start;

	platform_set_drvdata(pdev, pcm);
	ret = snd_soc_register_component(&pdev->dev, &rt5350_pcm_component,
					 &rt5350_pcm_dai, 1);

	if (!ret) {
		dev_err(&pdev->dev, "loaded\n");
		return ret;
	}

	dev_err(&pdev->dev, "Failed to register DAI\n");
	iounmap(pcm->base);

err_release_mem_region:
	release_mem_region(pcm->mem->start, resource_size(pcm->mem));
err_free:
	kfree(pcm);

	return ret;
}

/* ---------------------------------------------------------------------
 * OF platform bus binding code:
 * - Probe/remove operations
 * - OF device match table
 */
static int psc_i2s_of_probe(struct platform_device *op)
{
	int rc;
	struct psc_dma *psc_dma;
	struct mpc52xx_psc __iomem *regs;

	rc = mpc5200_audio_dma_create(op);
	if (rc != 0)
		return rc;

	rc = snd_soc_register_component(&op->dev, &psc_i2s_component,
					psc_i2s_dai, ARRAY_SIZE(psc_i2s_dai));
	if (rc != 0) {
		pr_err("Failed to register DAI\n");
		return rc;
	}

	psc_dma = dev_get_drvdata(&op->dev);
	regs = psc_dma->psc_regs;

	/* Configure the serial interface mode; defaulting to CODEC8 mode */
	psc_dma->sicr = MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_I2S |
			MPC52xx_PSC_SICR_CLKPOL;
	out_be32(&psc_dma->psc_regs->sicr,
		 psc_dma->sicr | MPC52xx_PSC_SICR_SIM_CODEC_8);

	/* Check for the codec handle.  If it is not present then we
	 * are done */
	if (!of_get_property(op->dev.of_node, "codec-handle", NULL))
		return 0;

	/* Due to errata in the dma mode; need to line up enabling
	 * the transmitter with a transition on the frame sync
	 * line */

	/* first make sure it is low */
	while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) != 0)
		;
	/* then wait for the transition to high */
	while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) == 0)
		;
	/* Finally, enable the PSC.
	 * Receiver must always be enabled; even when we only want
	 * transmit.  (see 15.3.2.3 of MPC5200B User's Guide) */

	/* Go */
	out_8(&psc_dma->psc_regs->command,
			MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE);

	return 0;

}