Re: [alsa-devel] [PATCH 3/3] ASoC: ux500: Dynamically fill DAI driverdata on probe

From: Lars-Peter Clausen
Date: Mon Dec 02 2013 - 13:10:27 EST


On 12/02/2013 07:00 PM, Lee Jones wrote:
[...]
> +void ux500_msp_populate_dai_drv(struct snd_soc_dai_driver *ux500_msp_dai_drv)
> +{
> + ux500_msp_dai_drv->probe = ux500_msp_dai_probe;
> + ux500_msp_dai_drv->suspend = NULL;
> + ux500_msp_dai_drv->resume = NULL;
> + ux500_msp_dai_drv->playback.channels_min = UX500_MSP_MIN_CHANNELS;
> + ux500_msp_dai_drv->playback.channels_max = UX500_MSP_MAX_CHANNELS;
> + ux500_msp_dai_drv->playback.rates = UX500_I2S_RATES;
> + ux500_msp_dai_drv->playback.formats = UX500_I2S_FORMATS;
> + ux500_msp_dai_drv->capture.channels_min = UX500_MSP_MIN_CHANNELS;
> + ux500_msp_dai_drv->capture.channels_max = UX500_MSP_MAX_CHANNELS;
> + ux500_msp_dai_drv->capture.rates = UX500_I2S_RATES;
> + ux500_msp_dai_drv->capture.formats = UX500_I2S_FORMATS;
> + ux500_msp_dai_drv->ops = ux500_msp_dai_ops;
> };

You can just use the same static driver for all devices. No need to
dynamically allocate it.

>
> static const struct snd_soc_component_driver ux500_msp_component = {
> @@ -809,6 +742,7 @@ static const struct snd_soc_component_driver ux500_msp_component = {
> static int ux500_msp_drv_probe(struct platform_device *pdev)
> {
> struct ux500_msp_i2s_drvdata *drvdata;
> + struct snd_soc_dai_driver *ux500_msp_dai_drv;
> int ret = 0;
>
> dev_dbg(&pdev->dev, "%s: Enter (pdev->name = %s).\n", __func__,
> @@ -863,8 +797,18 @@ static int ux500_msp_drv_probe(struct platform_device *pdev)
> }
> dev_set_drvdata(&pdev->dev, drvdata);
>
> + ux500_msp_dai_drv = devm_kzalloc(&pdev->dev,
> + sizeof(*ux500_msp_dai_drv),
> + GFP_KERNEL);
> + if (!ux500_msp_dai_drv) {
> + ret = -ENOMEM;
> + goto err_init_msp;
> + }
> +
> + ux500_msp_populate_dai_drv(ux500_msp_dai_drv);
> +
> ret = snd_soc_register_component(&pdev->dev, &ux500_msp_component,
> - &ux500_msp_dai_drv[drvdata->msp->id], 1);
> + ux500_msp_dai_drv, 1);
> if (ret < 0) {
> dev_err(&pdev->dev, "Error: %s: Failed to register MSP%d!\n",
> __func__, drvdata->msp->id);
>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/