linux-kernel - Re: [PATCH 3/4] iio: adc: ad7380: use IIO_DECLARE_BUFFER_WITH

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Message-ID: <71282f99-ae6c-463f-bd62-1e0664a549e1@baylibre.com>
Date: Sat, 19 Apr 2025 12:59:23 -0500
From: David Lechner <dlechner@...libre.com>
To: Andy Shevchenko <andy@...nel.org>
Cc: Jonathan Cameron <jic23@...nel.org>, Nuno Sá
 <nuno.sa@...log.com>, Lars-Peter Clausen <lars@...afoo.de>,
 Michael Hennerich <Michael.Hennerich@...log.com>, linux-iio@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] iio: adc: ad7380: use IIO_DECLARE_BUFFER_WITH_TS

On 4/19/25 11:38 AM, Andy Shevchenko wrote:
> On Fri, Apr 18, 2025 at 05:58:34PM -0500, David Lechner wrote:
>> Use IIO_DECLARE_BUFFER_WITH_TS to declare the buffer that gets used with
>> iio_push_to_buffers_with_ts(). This makes the code a bit easier to read
>> and understand.
> 
> ...
> 
>> -	u8 scan_data[ALIGN(MAX_NUM_CHANNELS * sizeof(u32), sizeof(s64))
>> -			   + sizeof(s64)] __aligned(IIO_DMA_MINALIGN);
>> +	IIO_DECLARE_BUFFER_WITH_TS(u8, scan_data, MAX_NUM_CHANNELS * sizeof(u32))
>> +		__aligned(IIO_DMA_MINALIGN);
> 
> Why u8 and not u32?
> 

Because this driver supports many chips, some need u16 and some u32.