Messages in this thread | | | Date | Thu, 6 Nov 2014 13:37:20 +0000 | From | Mark Brown <> | Subject | Re: [PATCH 1/2] ASoC: tfa9879: New driver for NXP Semiconductors TFA9879 amplifier. |
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On Thu, Nov 06, 2014 at 01:54:00PM +0100, Peter Rosin wrote:
> +#define TFA9879_REG(codec, reg, field, value) \ > + snd_soc_update_bits(codec, TFA9879_ ## reg, \ > + TFA9879_ ## field ## _MASK, \ > + (value) << TFA9879_ ## field ## _SHIFT)
Please don't do stuff like this, it just makes the code look more obscure than it should be for people who work with multiple devices - just use update_bits() directly.
> +static int tfa9879_prepare(struct snd_pcm_substream *substream, > + struct snd_soc_dai *dai) > +{ > + struct snd_soc_codec *codec = dai->codec; > + > + TFA9879_REG(codec, DEVICE_CONTROL, POWERUP, 1);
Use DAPM to manage power, you're probably looking for a supply widget.
> + switch (params_format(params)) { > + case SNDRV_PCM_FORMAT_S16_LE:
Use params_width() rather than a specific memory layout.
> + if (tfa9879->lsb_justified) > + TFA9879_REG(codec, SERIAL_INTERFACE_1, I2S_SET, i2s_set);
Why does this need to be reset every time, shouldn't we just be setting the register in set_fmt().?
> +static int tfa9879_probe(struct snd_soc_codec *codec) > +{ > + struct tfa9879_priv *tfa9879 = snd_soc_codec_get_drvdata(codec); > + > + codec->control_data = tfa9879->regmap;
This is redundant, just remove the entire function - ASoC will get the regmap automatically.
> + { TFA9879_MISC_STATUS, 0x0000 }, /* 0x15, read-only */ > +}; > + > +static bool tfa9879_volatile_register(struct device *dev, unsigned int reg) > +{ > + return reg == TFA9879_MISC_STATUS;
If the register is volatile it shouldn't have a default value provided. [unhandled content-type:application/pgp-signature] | |