22 Oct
2014
22 Oct
'14
9:39 p.m.
Hi,
I developed an aSoC driver for MOD-Duos Sound Card and i can aplay and
arecord, but when calling jackd (jackd -dalsa -r48000 -p256 -P hw:0 -C hw:0
&) i get an alsa format error.
I get this message:
--
Rafael Guayer
www.portalmod.com <http://www.portalmod.com.br>
22 Oct
22 Oct
9:40 p.m.
Sorry,
[root@alarm ~]# jackd -dalsa -r48000 -p256 -P hw:0 -C hw:0 &
[1] 361
[root@alarm ~]# jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
creating alsa driver ... hw:0|hw:0|256|2|48000|0|0|nomon|swmeter|-|32bit
<4>sunxi-i2s sunxi-i2s.0: Not enforcing symmetric_rates due to race
[ 176.991020] sunxi-i2s sunxi-i2s.0: Not enforcing symmetric_rates due to
race
<4>cs4245-codec 1-004c: Not enforcing symmetric_rates due to race
[ 177.003886] cs4245-codec 1-004c: Not enforcing symmetric_rates due to
race
configuring for 48000Hz, period = 256 frames (5.3 ms), buffer = 2 periods
Sorry. The audio interface "hw:0" doesn't support any of the hardware
sample formats that JACK's alsa-driver can use.
ALSA: cannot configure capture channel
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
I am working with S24_LE on CODEC Cirrus Logic CS4245. Does S24_LE works
with jack?
Thanks in advance.
2014-10-22 17:39 GMT-02:00 Rafael Guayer <rafael(a)portalmod.com.br>br>:
Hi,
I developed an aSoC driver for MOD-Duos Sound Card and i can aplay and
arecord, but when calling jackd (jackd -dalsa -r48000 -p256 -P hw:0 -C hw:0
&) i get an alsa format error.
I get this message:
--
Rafael Guayer
www.portalmod.com <http://www.portalmod.com.br>
--
Rafael Guayer
www.portalmod.com <http://www.portalmod.com.br>
23 Oct
23 Oct
3:22 a.m.
On Wed, 22 Oct 2014, Rafael Guayer wrote:
I am working with S24_LE on CODEC Cirrus Logic CS4245.
Does S24_LE works with jack?
Just a quick guess on my part... may need to be presented as 32 bit. I
have also seen S24_3LE in some places, but any jack startups I have seen
are either 16 or 32 bit. 24bit samples are stored as 32 bits in any case
with the lowest 8 as zero. See:
http://www.alsa-project.org/alsa-doc/alsa-lib/group___p_c_m.html#gaa14b7f26…
I am not much of a developer, just starting myself so others may be able
to give better answers.
--
Len Ovens
www.ovenwerks.net
4:21 a.m.
On Wed, Oct 22, 2014 at 9:21 PM, Len Ovens <len(a)ovenwerks.net> wrote:
On Wed, 22 Oct 2014, Rafael Guayer wrote:
I am working with S24_LE on CODEC Cirrus Logic CS4245. Does S24_LE works
JACK tries 32, 24 and 16 bit in that order, with endianess determined by
the platform, unless told on the command line to use only 16 bit.
with jack?
Just a quick guess on my part... may need to be presented as 32 bit. I
have also seen S24_3LE in some places, but any jack startups I have seen
are either 16 or 32 bit. 24bit samples are stored as 32 bits in any case
with the lowest 8 as zero. See:
1:51 p.m.
I solved this by adding the format S24_3LE to:
aSoC Codec Driver snd_soc_dai_driver->formats
aSoC Plataform Driver (DMA) snd_pcm_hardware->formats
aSoC Plataform Driver (I2S) snd_soc_dai_driver->capture->formats and
snd_soc_dai_driver->playback->formats
The codec CS4245 only works with 32 bit word size, so i am converting from
S24_3LE in the I2S plataform driver by setting the word size 32bits.
Thanks!
2014-10-23 0:20 GMT-02:00 Paul Davis <paul(a)linuxaudiosystems.com>om>:
On Wed, Oct 22, 2014 at 9:21 PM, Len Ovens <len(a)ovenwerks.net> wrote:
--
Rafael Guayer
www.portalmod.com <http://www.portalmod.com.br>
On Wed, 22 Oct 2014, Rafael Guayer wrote:
I am working with S24_LE on CODEC Cirrus Logic CS4245. Does S24_LE works
JACK tries 32, 24 and 16 bit in that order, with endianess determined by
the platform, unless told on the command line to use only 16 bit.
_______________________________________________
Linux-audio-dev mailing list
Linux-audio-dev(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-dev
with jack?
Just a quick guess on my part... may need to be presented as 32 bit. I
have also seen S24_3LE in some places, but any jack startups I have seen
are either 16 or 32 bit. 24bit samples are stored as 32 bits in any case
with the lowest 8 as zero. See:
2:37 p.m.
Rafael Guayer wrote:
I solved this by adding the format S24_3LE to:
aSoC Codec Driver snd_soc_dai_driver->formats
aSoC Plataform Driver (DMA) snd_pcm_hardware->formats
aSoC Plataform Driver (I2S) snd_soc_dai_driver->capture->formats and
snd_soc_dai_driver->playback->formats
The codec CS4245 only works with 32 bit word size
This does not matter.
Please specify the exact format that is supported by the platform driver.
(ALSA has three different 24-bit formats, and the most widely used one
does not have "24" in its name. So please specify how many sample bits
are stored into how many memory bits, and how those are aligned.)
Regards,
Clemens
6 p.m.
Hi Clemens,
The plataform driver and the I2S hardware on the ARM SoC supports sample
resolutions of 16, 20 and 24 bits, and word sizes of 16, 20, 24 and 32
bits. Signed, little or big endian.
The i2s-DMA plataform driver and hardware, only 8, 16 and 32 bits transfers
are possible.
The problem is the CODEC (CS4245 Cirrus Logic), that, for I2S format,
supports only 24 bit resolution in 32 bit words, signed, litle endian (
SNDRV_PCM_FMTBIT_S24_LE).
In the i2s plataform driver, in *_hw_params, when params_format(params) ==
SNDRV_PCM_FMTBIT_S24_3LE, it configured the I2S word size to 24 bits, and
that didn't work on the CODEC.
I did some printk on the 3 drivers *_hw_param and jack is passing S24_3LE,
so I had to change on the i2s driver to configure 32bit word size for
S24_3LE to make it work. But I am patching this plataform drivers anyway,
it was lacking the capture dma *_pcm_prepare.
What is this widely used format for 24bits on ALSA?
SNDRV_PCM_FMTBIT_FLOAT_LE?
Jack only starts when I put SNDRV_PCM_FMTBIT_S24_LE on the plataform
drivers and in the codec driver.
The sound only works when i change the i2s plataform driver to set 32bit
word size for SNDRV_PCM_FMTBIT_S24_3LE.
This is a pastebin of jack output with and without SNDRV_PCM_FMTBIT_S24_LE
on the codec driver.
http://pastebin.com/qhtaPEtW
What is the format i should put on the drivers so Jack works with 24bit
sample resolution and 32 bit word size?
The drivers (work in progress full of comments and printks) are available
at:
Machine:
https://github.com/portalmod/linux-sunxi/tree/sunxi-3.4.61-r1-rt77-i2s-cs42…
(mod-duo.c)
Plataform:
https://github.com/portalmod/linux-sunxi/tree/sunxi-3.4.61-r1-rt77-i2s-cs42…
(sunxi-i2s.c and sunxi-i2sdma.c)
Codec:
https://github.com/portalmod/linux-sunxi/tree/sunxi-3.4.61-r1-rt77-i2s-cs42…
(cs4245.c)
Thanks in advance.
Best regards,
2014-10-23 10:37 GMT-02:00 Clemens Ladisch <clemens(a)ladisch.de>de>:
Rafael Guayer wrote:
--
Rafael Guayer
www.portalmod.com <http://www.portalmod.com.br>
I solved this by adding the format S24_3LE to:
aSoC Codec Driver snd_soc_dai_driver->formats
aSoC Plataform Driver (DMA) snd_pcm_hardware->formats
aSoC Plataform Driver (I2S) snd_soc_dai_driver->capture->formats and
snd_soc_dai_driver->playback->formats
The codec CS4245 only works with 32 bit word size
This does not matter.
Please specify the exact format that is supported by the platform driver.
(ALSA has three different 24-bit formats, and the most widely used one
does not have "24" in its name. So please specify how many sample bits
are stored into how many memory bits, and how those are aligned.)
Regards,
Clemens
8:26 p.m.
Rafael Guayer wrote:
The plataform driver and the I2S hardware on the ARM
SoC supports sample
resolutions of 16, 20 and 24 bits, and word sizes of 16, 20, 24 and 32
bits. Signed, little or big endian.
The i2s-DMA plataform driver and hardware, only 8, 16 and 32 bits transfers
are possible.
The problem is the CODEC (CS4245 Cirrus Logic), that, for I2S format,
supports only 24 bit resolution in 32 bit words, signed, litle endian
The format on the I²S bus is pretty much independent from the format that
the DMA controller reads from/writes to memory.
In the i2s plataform driver, in *_hw_params, when
params_format(params) ==
SNDRV_PCM_FMTBIT_S24_3LE,
24-bit words not supported by the DMA platform driver.
What is this widely used format for 24bits on ALSA?
SNDRV_PCM_FORMAT_S32_LE. Apparently, it's the only one that your DMA
hardware supports for 24-bit samples.
Regards,
Clemens
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7 comments
4 participants
participants (4)
-
Clemens Ladisch -
Len Ovens -
Paul Davis -
Rafael Guayer