Commit Graph

7 Commits

Author SHA1 Message Date
Shengjiu Wang
29dbfeecab
ASoC: fsl_micfil: Add Hardware Voice Activity Detector support
The Hardware Voice Activity Detector (HWVAD) is a block
responsible for detect voice activity in a channel selected
by the user. It can be configured in Envelope-based or
Energy-based mode.

There are additional two interrupts for HWVAD, one is event
interrupt, another is error interrupt.

Enable hwvad in parallel with recording.
when voice activity detected, HWVAD will be disabled and
alsa control notification is triggerred.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1663925494-9941-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-10-17 12:48:25 +01:00
Shengjiu Wang
3b13b1437d
ASoC: fsl_micfil: change micfil default settings
Previous default settings resulted in loose dynamic
range and low sound level.
New default configuration changes:
- outgain = 2
- quality mode = VLOW0
- dc remover = bypass

Signed-off-by: Irina Patru <ioana-irina.patru@nxp.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1656405589-29850-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-06-29 11:58:45 +01:00
Shengjiu Wang
101b096bc2
ASoC: fsl_micfil: fix the naming style for mask definition
Remove the _SHIFT for the mask definition.

Fixes: 17f2142bae ("ASoC: fsl_micfil: use GENMASK to define register bit fields")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/r/1651736047-28809-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-05-05 13:24:48 +01:00
Sascha Hauer
fb855b8d46
ASoC: fsl_micfil: use define for OSR default value
The OSR (OverSampling Rate) setting is set once to the default value
and never changed throughout the driver. Nevertheless the value is
read back from the register for further calculations. Just use the
default value because we know what we have written.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20220414162249.3934543-14-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19 12:06:22 +01:00
Sascha Hauer
17f2142bae
ASoC: fsl_micfil: use GENMASK to define register bit fields
Use GENMASK along with FIELD_PREP and FIELD_GET to access bitfields in
registers to straighten register access and to drop a lot of defines.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20220414162249.3934543-6-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19 12:06:13 +01:00
Sascha Hauer
bd2cffd10d
ASoC: fsl_micfil: do not define SHIFT/MASK for single bits
No need to have defines for the mask of single bits. Also shift is
unused. Drop all these unnecessary defines.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20220414162249.3934543-5-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-19 12:06:12 +01:00
Cosmin Samoila
47a70e6fc9
ASoC: Add MICFIL SoC Digital Audio Interface driver.
Add Digital Audio Interface driver that convers PDM bitstream to PCM
format.

Features:
- Fixed filtering characteristics for audio application.
- Full or partial set of channels operation with individual enable control.
- Programmable PDM clock generator.
- Programmable decimation rate.
- 16-bit signed output result.
- Overall stopband attenuation more than 80dB.
- Overall passband ripple less than 0.2dB.

Signed-off-by: Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-01-07 17:00:55 +00:00