Re: [PATCH 2/4] Add Wolfson Microelectronics WM8766 codec ALSAdriver

From: Mark Brown
Date: Tue Apr 17 2012 - 10:59:28 EST

On Mon, Apr 16, 2012 at 11:18:36PM +0200, Ondrej Zary wrote:
> Needed by Philips PSC724 subdriver. The code does not contain any
> card-specific bits so it can be used by any other ALSA driver.
> Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>

Please CC me (and ideally all of patches@xxxxxxxxxxxxxxxxxxxxxxxxxxx)
on any drivers for Wolfson devices. It's not like we're secretive!

> ---
> include/sound/wm8766.h | 160 ++++++++++++++++++++
> sound/i2c/other/Makefile | 3 +-
> sound/i2c/other/wm8766.c | 374 ++++++++++++++++++++++++++++++++++++++++++++++

No, this should be supported in ASoC - anything adding new code in
sound/i2c is *deeply* suspicious.

> +struct snd_wm8766_ops {
> + void (*write)(struct snd_wm8766 *wm, u16 addr, u16 data);
> +};

You should in general use regmap rather than open coding register I/O
for I2C devices.

> +void snd_wm8766_init(struct snd_wm8766 *wm);
> +void snd_wm8766_set_if(struct snd_wm8766 *wm, u16 dac);
> +void snd_wm8766_set_master_mode(struct snd_wm8766 *wm, u16 mode);
> +void snd_wm8766_set_power(struct snd_wm8766 *wm, u16 power);
> +void snd_wm8766_volume_restore(struct snd_wm8766 *wm);
> +int snd_wm8766_build_controls(struct snd_wm8766 *wm);

I've not yet looked at the rest of the code but this looks awfully like
you've just invented a minimal version of the ASoC interfaces...
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