Re: [PATCH v3 5/6] iio: adc: ad7173: Add support for AD411x devices

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On 29/05/2024 15:46, Nuno Sá wrote:
> On Mon, 2024-05-27 at 20:02 +0300, Dumitru Ceclan via B4 Relay wrote:
>> From: Dumitru Ceclan <dumitru.ceclan@xxxxxxxxxx>

...

>>  static const struct ad7173_device_info ad7173_device_info[] = {
>> +	[ID_AD4111] = {
>> +		.name = "ad4111",
>> +		.id = AD7173_AD4111_AD4112_AD4114_ID,
>> +		.num_voltage_inputs_with_divider = 8,
>> +		.num_channels = 16,
>> +		.num_configs = 8,
>> +		.num_voltage_inputs = 8,
>> +		.num_gpios = 2,
>> +		.higher_gpio_bits = true,
>> +		.has_temp = true,
>> +		.has_vcom_input = true,
>> +		.has_input_buf = true,
>> +		.has_current_inputs = true,
>> +		.has_int_ref = true,
>> +		.clock = 2 * HZ_PER_MHZ,
>> +		.sinc5_data_rates = ad7173_sinc5_data_rates,
>> +		.num_sinc5_data_rates = ARRAY_SIZE(ad7173_sinc5_data_rates),
>> +	},
> 
> At some point it would be nice to drop the ad7173_device_info array...
> 
What are good alternatives to this?
...

>> +		ret = fwnode_property_match_property_string(child,
>> +							    "adi,channel-type",
>> +							    ad7173_channel_types,
>> +							   
>> ARRAY_SIZE(ad7173_channel_types));
>> +		chan->differential = (ret < 0 || ret == AD7173_CHAN_DIFFERENTIAL)
>> +					? 1 : 0;
> 
> I don't think we should treat 'ret < 0' has a differential channel. Any reason for
> it? For me, it's just an invalid property value given by the user...
> 
Yes, as that would be the default value if it's missing or invalid

> - Nuno Sá
> 





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