Unverified Commit 41bceb12 authored by Olivier Moysan's avatar Olivier Moysan Committed by Mark Brown
Browse files

ASoC: stm32: dfsdm: add actual resolution trace 



Add a trace to report actual resolution of audio samples.

Signed-off-by: default avatarOlivier Moysan <olivier.moysan@st.com>
Link: https://lore.kernel.org/r/20201007153459.22155-3-olivier.moysan@st.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 6101bf71

drivers/iio/adc/stm32-dfsdm-adc.c

+4 −0
Original line number Diff line number Diff line
@@ -293,6 +293,7 @@ static int stm32_dfsdm_compute_osrs(struct stm32_dfsdm_filter *fl, 
					max >>= flo->rshift;

				}

				flo->max = (s32)max;

				flo->bits = bits;



				pr_debug("%s: fast %d, fosr %d, iosr %d, res 0x%llx/%d bits, rshift %d, lshift %d\n",

					 __func__, fast, flo->fosr, flo->iosr,
@@ -476,6 +477,9 @@ static int stm32_dfsdm_channels_configure(struct iio_dev *indio_dev, 
	if (!flo->res)

		return -EINVAL;



	dev_dbg(&indio_dev->dev, "Samples actual resolution: %d bits",

		min(flo->bits, (u32)DFSDM_DATA_RES - 1));



	for_each_set_bit(bit, &adc->smask,

			 sizeof(adc->smask) * BITS_PER_BYTE) {

		chan = indio_dev->channels + bit;

drivers/iio/adc/stm32-dfsdm.h

+2 −0
Original line number Diff line number Diff line
@@ -249,6 +249,7 @@ enum stm32_dfsdm_sinc_order { 
 * @rshift: output sample right shift (hardware shift)

 * @lshift: output sample left shift (software shift)

 * @res: output sample resolution

 * @bits: output sample resolution in bits

 * @max: output sample maximum positive value

 */

struct stm32_dfsdm_filter_osr {
@@ -257,6 +258,7 @@ struct stm32_dfsdm_filter_osr { 
	unsigned int rshift;

	unsigned int lshift;

	u64 res;

	u32 bits;

	s32 max;

};

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