Received-SPF: pass (google.com: domain of linux-kernel+bounces-194220-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223;
Message-ID: <917bc1d9-fbdc-4ca2-a156-813b57c8201e@gmail.com>
Date: Wed, 29 May 2024 17:03:27 +0300
Precedence: bulk
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: [PATCH v3 5/6] iio: adc: ad7173: Add support for AD411x devices
To: =?UTF-8?Q?Nuno_S=C3=A1?= <noname.nuno@gmail.com>,
 dumitru.ceclan@analog.com
Cc: Lars-Peter Clausen <lars@metafoo.de>,
 Michael Hennerich <Michael.Hennerich@analog.com>,
 Jonathan Cameron <jic23@kernel.org>, Rob Herring <robh@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, David Lechner <dlechner@baylibre.com>,
 linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org
References: <20240527-ad4111-v3-0-7e9eddbbd3eb@analog.com>
 <20240527-ad4111-v3-5-7e9eddbbd3eb@analog.com>
 <6f18184de4a37993baedc15b44ecf0a6834a24d1.camel@gmail.com>
Content-Language: en-US
From: "Ceclan, Dumitru" <mitrutzceclan@gmail.com>
In-Reply-To: <6f18184de4a37993baedc15b44ecf0a6834a24d1.camel@gmail.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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@analog.com>

..

>>  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
>