Commit d202ce47 authored by Stefan Popa's avatar Stefan Popa Committed by Jonathan Cameron
Browse files

iio: accel: adxl372: Fix/remove limitation for FIFO samples 



Currently, the driver sets the FIFO_SAMPLES register with the number of
sample sets (maximum of 170 for 3 axis data, 256 for 2-axis and 512 for
single axis). However, the FIFO_SAMPLES register should store the number
of samples, regardless of how the FIFO format is configured.

Signed-off-by: default avatarStefan Popa <stefan.popa@analog.com>
Fixes: f4f55ce3 ("iio:adxl372: Add FIFO and interrupts support")
Cc: <Stable@vger.kernel.org>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 4043ecfb

drivers/iio/accel/adxl372.c

+8 −3
Original line number Diff line number Diff line
@@ -474,12 +474,17 @@ static int adxl372_configure_fifo(struct adxl372_state *st) 
	if (ret < 0)

		return ret;



	fifo_samples = st->watermark & 0xFF;

	/*

	 * watermark stores the number of sets; we need to write the FIFO

	 * registers with the number of samples

	 */

	fifo_samples = (st->watermark * st->fifo_set_size);

	fifo_ctl = ADXL372_FIFO_CTL_FORMAT_MODE(st->fifo_format) |

		   ADXL372_FIFO_CTL_MODE_MODE(st->fifo_mode) |

		   ADXL372_FIFO_CTL_SAMPLES_MODE(st->watermark);

		   ADXL372_FIFO_CTL_SAMPLES_MODE(fifo_samples);



	ret = regmap_write(st->regmap, ADXL372_FIFO_SAMPLES, fifo_samples);

	ret = regmap_write(st->regmap,

			   ADXL372_FIFO_SAMPLES, fifo_samples & 0xFF);

	if (ret < 0)

		return ret;

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