[PATCH v3 6/6] iio: adc: at91-sama5d2: use IIO_DECLARE_BUFFER_WITH_TS

[David Lechner]

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.

Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx>
---
This is an alternative to [1].

[1]: https://lore.kernel.org/linux-iio/20250418-iio-prefer-aligned_s64-timestamp-v1-2-4c6080710516@xxxxxxxxxxxx/
---
 drivers/iio/adc/at91-sama5d2_adc.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 414610afcb2c4128a63cf76767803c32cb01ac5e..4ebaeb41aa4568e2461506471af0540af9d1a041 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -586,15 +586,6 @@ struct at91_adc_temp {
 	u16				saved_oversampling;
 };
 
-/*
- * Buffer size requirements:
- * No channels * bytes_per_channel(2) + timestamp bytes (8)
- * Divided by 2 because we need half words.
- * We assume 32 channels for now, has to be increased if needed.
- * Nobody minds a buffer being too big.
- */
-#define AT91_BUFFER_MAX_HWORDS ((32 * 2 + 8) / 2)
-
 struct at91_adc_state {
 	void __iomem			*base;
 	int				irq;
@@ -616,8 +607,8 @@ struct at91_adc_state {
 	struct at91_adc_temp		temp_st;
 	struct iio_dev			*indio_dev;
 	struct device			*dev;
-	/* Ensure naturally aligned timestamp */
-	u16				buffer[AT91_BUFFER_MAX_HWORDS] __aligned(8);
+	/* We assume 32 channels for now, has to be increased if needed.*/
+	IIO_DECLARE_BUFFER_WITH_TS(u16, buffer, 32);
 	/*
 	 * lock to prevent concurrent 'single conversion' requests through
 	 * sysfs.

-- 
2.43.0