[alsa-devel] [PATCH v3] ASoC: jz4740: Convert qi_lb60 to use snd_soc_register_card()

[Lars-Peter Clausen]

On 01/06/2012 04:30 AM, Axel Lin wrote:
> Use snd_soc_register_card() instead of creating a "soc-audio" platform device.
> 
> Signed-off-by: Axel Lin <axel.lin at gmail.com>

Acked-by: Lars-Peter Clausen <lars at metafoo.de>

> ---
> v2: Fix a typo in v1.
> v3: Free the card before the GPIOs since the card uses the GPIOs
> 
>  arch/mips/jz4740/board-qi_lb60.c |    6 ++++
>  sound/soc/jz4740/qi_lb60.c       |   56 +++++++++++++++++--------------------
>  2 files changed, 32 insertions(+), 30 deletions(-)
> 
> diff --git a/arch/mips/jz4740/board-qi_lb60.c b/arch/mips/jz4740/board-qi_lb60.c
> index 639e3ce..9a91fe9 100644
> --- a/arch/mips/jz4740/board-qi_lb60.c
> +++ b/arch/mips/jz4740/board-qi_lb60.c
> @@ -418,6 +418,11 @@ static struct platform_device qi_lb60_charger_device = {
>  	},
>  };
>  
> +/* audio */
> +static struct platform_device qi_lb60_audio_device = {
> +	.name = "qi-lb60-audio",
> +	.id = -1,
> +};
>  
>  static struct platform_device *jz_platform_devices[] __initdata = {
>  	&jz4740_udc_device,
> @@ -434,6 +439,7 @@ static struct platform_device *jz_platform_devices[] __initdata = {
>  	&qi_lb60_gpio_keys,
>  	&qi_lb60_pwm_beeper,
>  	&qi_lb60_charger_device,
> +	&qi_lb60_audio_device,
>  };
>  
>  static void __init board_gpio_setup(void)
> diff --git a/sound/soc/jz4740/qi_lb60.c b/sound/soc/jz4740/qi_lb60.c
> index 0097c3b..e8aaff1 100644
> --- a/sound/soc/jz4740/qi_lb60.c
> +++ b/sound/soc/jz4740/qi_lb60.c
> @@ -91,56 +91,52 @@ static struct snd_soc_card qi_lb60 = {
>  	.num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
>  };
>  
> -static struct platform_device *qi_lb60_snd_device;
> -
>  static const struct gpio qi_lb60_gpios[] = {
>  	{ QI_LB60_SND_GPIO, GPIOF_OUT_INIT_LOW, "SND" },
>  	{ QI_LB60_AMP_GPIO, GPIOF_OUT_INIT_LOW, "AMP" },
>  };
>  
> -static int __init qi_lb60_init(void)
> +static int __devinit qi_lb60_probe(struct platform_device *pdev)
>  {
> +	struct snd_soc_card *card = &qi_lb60;
>  	int ret;
>  
> -	qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
> -
> -	if (!qi_lb60_snd_device)
> -		return -ENOMEM;
> -
>  	ret = gpio_request_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
> -	if (ret) {
> -		pr_err("qi_lb60 snd: Failed to request gpios: %d\n", ret);
> -		goto err_device_put;
> -	}
> +	if (ret)
> +		return ret;
>  
> -	platform_set_drvdata(qi_lb60_snd_device, &qi_lb60);
> +	card->dev = &pdev->dev;
>  
> -	ret = platform_device_add(qi_lb60_snd_device);
> +	ret = snd_soc_register_card(card);
>  	if (ret) {
> -		pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
> -		goto err_unset_pdata;
> +		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
> +			ret);
> +		gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
>  	}
> -
> -	 return 0;
> -
> -err_unset_pdata:
> -	platform_set_drvdata(qi_lb60_snd_device, NULL);
> -/*err_gpio_free_array:*/
> -	gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
> -err_device_put:
> -	platform_device_put(qi_lb60_snd_device);
> -
>  	return ret;
>  }
> -module_init(qi_lb60_init);
>  
> -static void __exit qi_lb60_exit(void)
> +static int __devexit qi_lb60_remove(struct platform_device *pdev)
>  {
> -	platform_device_unregister(qi_lb60_snd_device);
> +	struct snd_soc_card *card = platform_get_drvdata(pdev);
> +
> +	snd_soc_unregister_card(card);
>  	gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
> +	return 0;
>  }
> -module_exit(qi_lb60_exit);
> +
> +static struct platform_driver qi_lb60_driver = {
> +	.driver		= {
> +		.name	= "qi-lb60-audio",
> +		.owner	= THIS_MODULE,
> +	},
> +	.probe		= qi_lb60_probe,
> +	.remove		= __devexit_p(qi_lb60_remove),
> +};
> +
> +module_platform_driver(qi_lb60_driver);
>  
>  MODULE_AUTHOR("Lars-Peter Clausen <lars at metafoo.de>");
>  MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
>  MODULE_LICENSE("GPL v2");
> +MODULE_ALIAS("platform:qi-lb60-audio");