linux-kernel - Re: [PATCH 4/4] ASoC: tpa6130a2: Add DAPM support

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Date:	Mon, 20 Jun 2016 11:34:48 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Helen Koike <helen.koike@...labora.co.uk>, <lgirdwood@...il.com>,
	<broonie@...nel.org>, <perex@...ex.cz>, <tiwai@...e.com>,
	<jarkko.nikula@...mer.com>, <lars@...afoo.de>,
	<k.kozlowski@...sung.com>, <alsa-devel@...a-project.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>
Subject: Re: [PATCH 4/4] ASoC: tpa6130a2: Add DAPM support

On 06/18/2016 07:42 AM, Helen Koike wrote:
> Add DAPM support and updated rx51 accordingly.
> As a consequence:
> - the exported function tpa6130a2_stereo_enable is not needed anymore
> - the mutex is dealt in the DAPM
> - the power state is tracked by the DAPM
> 
> Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
> [koike: port for upstream]
> Signed-off-by: Helen Koike <helen.koike@...labora.co.uk>
> ---
>  sound/soc/codecs/tpa6130a2.c | 184 +++++++++++++++++--------------------------
>  sound/soc/codecs/tpa6130a2.h |  11 +--
>  sound/soc/omap/rx51.c        |  22 ++----
>  3 files changed, 86 insertions(+), 131 deletions(-)
> 
> diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
> index dc7bfc9..7cb5066 100644
> --- a/sound/soc/codecs/tpa6130a2.c
> +++ b/sound/soc/codecs/tpa6130a2.c
> @@ -41,79 +41,71 @@ enum tpa_model {
>  	TPA6140A2,
>  };
>  
> -static struct i2c_client *tpa6130a2_client;
> -
>  /* This struct is used to save the context */
>  struct tpa6130a2_data {
> -	struct mutex mutex;
>  	struct regmap *regmap;
>  	struct regulator *supply;
>  	int power_gpio;
> -	u8 power_state:1;
>  	enum tpa_model id;
>  };
>  
> -static int tpa6130a2_power(u8 power)
> +static int tpa6130a2_power(struct device *dev, bool enable)

I would rather add 'struct device *dev' to tpa6130a2_data and pass the pointer
to the private struct instead to the device.

>  {
> -	struct	tpa6130a2_data *data;
> -	int	ret = 0;
> -
> -	if (WARN_ON(!tpa6130a2_client))
> -		return -EINVAL;
> -	data = i2c_get_clientdata(tpa6130a2_client);
> -
> -	mutex_lock(&data->mutex);
> -	if (power == data->power_state)
> -		goto exit;
> +	struct tpa6130a2_data *data = dev_get_drvdata(dev);
> +	int ret;
>  
> -	if (power) {
> +	if (enable) {

-- 
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