Commit 66890d53 authored Sep 04, 2018 by Takashi Iwai Committed by Greg Kroah-Hartman Sep 10, 2018

staging: bcm2835-audio: Add 10ms period constraint



It seems that the resolution of vc04 callback is in 10 msec; i.e. the
minimal period size is also 10 msec.

This patch adds the corresponding hw constraint.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent d446b78c

drivers/staging/vc04_services/bcm2835-audio/bcm2835-pcm.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -145,6 +145,11 @@ static int snd_bcm2835_playback_open_generic(
		SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
		16);

		/* position update is in 10ms order */
		snd_pcm_hw_constraint_minmax(runtime,
		SNDRV_PCM_HW_PARAM_PERIOD_TIME,
		10 * 1000, UINT_MAX);

		chip->alsa_stream[idx] = alsa_stream;

		chip->opened \|= (1 << idx);