> On May 23, 2014, at 3:40 PM, "Mark Brown" <broonie@xxxxxxxxxx> wrote:
>
>> On Fri, May 23, 2014 at 02:16:54PM -0500, Paul Handrigan wrote:
>> This patch adds support for the Cirrus Logic Stereo I2C CODEC
>
> This all looks pretty clean and nice, I have got a few comments below
> but they're all pretty small things.
>
>> + SOC_SINGLE("De-emp 44.1kHz", CS4265_DAC_CTL, 1,
>> + 1, 0),
>> + SOC_SINGLE("DAC INV", CS4265_DAC_CTL2, 5,
>> + 1, 0),
>> + SOC_SINGLE("DAC Zero Cross", CS4265_DAC_CTL2, 6,
>> + 1, 0),
>> + SOC_SINGLE("DAC Soft Ramp", CS4265_DAC_CTL2, 7,
>> + 1, 0),
>
> All boolean controls should have Switch at the end of the name.
>
>> + SOC_SINGLE("ADC HPF Disable", CS4265_ADC_CTL, 1,
>> + 1, 0),
>
> Invert this one and call it ADC HPF Switch (similarly for other disable
> controls).
>
>> +
>> + for (i = 0; i < ARRAY_SIZE(clk_map_table); i++) {
>> + if (clk_map_table[i].rate == rate &&
>> + clk_map_table[i].mclk == mclk)
>> + return i;
>
> Indent the second line of the if condition with the (.
>
>> +static int cs4265_set_sysclk(struct snd_soc_dai *codec_dai, int clk_id,
>> + unsigned int freq, int dir)
>> +{
>> + struct snd_soc_codec *codec = codec_dai->codec;
>> + struct cs4265_private *cs4265 = snd_soc_codec_get_drvdata(codec);
>> + int i;
>> +
>> + for (i = 0; i < ARRAY_SIZE(clk_map_table); i++) {
>> + if (clk_map_table[i].mclk == freq) {
>
> It's better to check that clk_id is 0 here, just in case you think of
> another clock to control in future (perhaps with a new device that can
> share the same driver even if it's not possible for this one).
>
>> + {
>> + .name = "cs4265-spdif",
>> + .playback = {
>> + .stream_name = "SPDIF Playback",
>> + .channels_min = 1,
>> + .channels_max = 2,
>> + .rates = CS4265_SPDIF_RATES,
>> + .formats = CS4265_FORMATS,
>> + },
>> + .ops = &cs4265_ops,
>> + },
>
> You should have separate operations for the DAC and S/PDIF DAIs and only
> mute the relevant interfaces. If you can't mute the DAC DAIs
> independently just don't provide an operation and let the user control
> it as they like. This avoids problems if more than one stream is
> running at once.
I am going to remove the S/PDIF DAI. Since it is TX only.
>
>> +static int cs4265_probe(struct snd_soc_codec *codec)
>> +{
>> + return 0;
>> +}
>
> Remove empty operations.
>
>> + } else {
>> + pdata = devm_kzalloc(&i2c_client->dev,
>> + sizeof(struct cs4265_platform_data),
>> + GFP_KERNEL);
>> + if (!pdata) {
>> + dev_err(&i2c_client->dev, "could not allocate pdata\n");
>> + return -ENOMEM;
>> + }
>> + pdata->reset_gpio = of_get_named_gpio(i2c_client->dev.of_node,
>> + "reset-gpio", 0);
>> + cs4265->pdata = *pdata;
>> + }
>
> Can you convert this to use the new gpiod_ APIs and directly request by
> name? There's also the -gpios thing I mentioned for the binding.
>
>> + ret = snd_soc_register_codec(&i2c_client->dev,
>> + &soc_codec_dev_cs4265, cs4265_dai,
>> + ARRAY_SIZE(cs4265_dai));
>> + return ret;
>
> devm_
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