From: Oldřich Jedlička Date: Tue, 18 Aug 2009 19:24:54 +0000 (-0300) Subject: V4L/DVB (12490): Report only 32kHz for ALSA X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7b54360293c9d72b54e462d146c9376287d2f71b;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git V4L/DVB (12490): Report only 32kHz for ALSA There are several reasons: - SAA7133/35 uses DDEP (DemDec Easy Programming mode), which works in 32kHz only - SAA7134 for TV mode uses DemDec mode (32kHz) - Radio works in 32kHz only - When recording 48kHz from Line1/Line2, switching of capture source to TV means switching to 32kHz without any frequency translation Signed-off-by: Oldřich Jedlička Acked-by: hermann pitton Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/saa7134/saa7134-alsa.c b/drivers/media/video/saa7134/saa7134-alsa.c index 8b0b64a89874..7c0a3a3d61a6 100644 --- a/drivers/media/video/saa7134/saa7134-alsa.c +++ b/drivers/media/video/saa7134/saa7134-alsa.c @@ -435,6 +435,16 @@ snd_card_saa7134_capture_pointer(struct snd_pcm_substream * substream) /* * ALSA hardware capabilities definition + * + * Report only 32kHz for ALSA: + * + * - SAA7133/35 uses DDEP (DemDec Easy Programming mode), which works in 32kHz + * only + * - SAA7134 for TV mode uses DemDec mode (32kHz) + * - Radio works in 32kHz only + * - When recording 48kHz from Line1/Line2, switching of capture source to TV + * means + * switching to 32kHz without any frequency translation */ static struct snd_pcm_hardware snd_card_saa7134_capture = @@ -448,9 +458,9 @@ static struct snd_pcm_hardware snd_card_saa7134_capture = SNDRV_PCM_FMTBIT_U8 | \ SNDRV_PCM_FMTBIT_U16_LE | \ SNDRV_PCM_FMTBIT_U16_BE, - .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000, + .rates = SNDRV_PCM_RATE_32000, .rate_min = 32000, - .rate_max = 48000, + .rate_max = 32000, .channels_min = 1, .channels_max = 2, .buffer_bytes_max = (256*1024),