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[alsa-devel] maximum tolerable sampling frequency difference for a driver
by chri 12 Nov '08

12 Nov '08

Let's say that the driver cannot set the exact sampling frequency asked via hwparms but something near (because of the granularity of the result of the clock division). What is the maximum difference that should be accepted (in Hz or in %)? I guess that there are 2 factors playing a role: 1) if the frequency is too different then the upper layers report a undeflow/overflow 2) the sound just doesn't sound good (just a bit too presto or too adagio) So what difference should be accepted instead of returning -EINVAL? Thanks, -- Christian Pellegrin, see http://www.evolware.org/chri/ "Real Programmers don't play tennis, or any other sport which requires you to change clothes. Mountain climbing is OK, and Real Programmers wear their climbing boots to work in case a mountain should suddenly spring up in the middle of the computer room."

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[alsa-devel] [PATCH 0/4] ASoC updates
by Mark Brown 12 Nov '08

12 Nov '08

The following changes since commit e18c94d20224f3df584531a48d944d8cccfda46d: Grazvydas Ignotas (1): ALSA: ASoC: TWL4030 codec - fix 256*Fs clock are available in the git repository at: git://opensource.wolfsonmicro.com/linux-2.6-asoc for-tiwai Christian Pellegrin (1): ASoC: s3c24xx 8 bit sound fix Hugo Villeneuve (1): ASoC: Add Right-Justified mode and Codec clock master to davinci-i2s Naresh Medisetty (1): ASoC: DaVinci: Audio: Fix swapping of channels at start of stereo playback Troy Kisky (1): ASoC: TLV320AIC23B Support more sample rates sound/soc/codecs/tlv320aic23.c | 222 +++++++++++++++++++++++++++++++-------- sound/soc/davinci/davinci-i2s.c | 89 ++++++++++++++-- sound/soc/s3c24xx/s3c24xx-i2s.c | 7 ++ 3 files changed, 263 insertions(+), 55 deletions(-)

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[alsa-devel] [topic/asoc][PATCH] ASoC: Fix supported sample rates of TWL4030 audio codec
by Jarkko Nikula 12 Nov '08

12 Nov '08

TWL4030 currently supports rates between 8 kHz and 48 kHz and sets the codec mode register accordingly in twl4030_hw_params. Expose this info so that ASoC can match other rates than 44.1 kHz or 48 kHz as well. Signed-off-by: Jarkko Nikula <jarkko.nikula(a)nokia.com> Cc: Steve Sakoman <steve(a)sakoman.com> --- sound/soc/codecs/twl4030.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c index 90f3b4d..c1893d2 100644 --- a/sound/soc/codecs/twl4030.c +++ b/sound/soc/codecs/twl4030.c @@ -504,7 +504,7 @@ static int twl4030_set_dai_fmt(struct snd_soc_dai *codec_dai, return 0; } -#define TWL4030_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) +#define TWL4030_RATES (SNDRV_PCM_RATE_8000_48000) #define TWL4030_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FORMAT_S24_LE) struct snd_soc_dai twl4030_dai = { -- 1.5.6.5

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[alsa-devel] RFC: add possibility to change text identification string
by Jaroslav Kysela 12 Nov '08

12 Nov '08

Hi all, based on discussion today, I prepared a patch to handle udev-style card renaming. Comments are welcome. Jaroslav

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Re: [alsa-devel] Regression on alsa-driver-1.0.18a on HDA for Dell Inspiron 1521
by Takashi Iwai 12 Nov '08

12 Nov '08

At Wed, 12 Nov 2008 12:14:45 -0200, Manuel Naranjo wrote: > > > > I guess this has been fixed on my tree. > > Try the snapshot tarball below > > ftp://ftp.kernel.org/pub/kernel/linux/people/tiwai/snapshot/alsa-driver-sna… > > > > > > Takashi > > > Ok thanks, I give it a try, the url was wrong it should be: > ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-sna… Oh yes, thanks for correction. BTW, .gz is the original tarball, and .bz2 is the one created automatically on kernel.org. Thus .bz2 might be missing sometimes. That's why I showed .gz in the above. Takashi

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[alsa-devel] amixer error
by Arun KS 12 Nov '08

12 Nov '08

Hi, I am getting an error for amixer, but my amixer controls works fine. Here is the log: [root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# amixer amixer: Mixer default load error: Operation not permitted [root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# [root@OMAP2530EVM ~]# amixer controls numid=2,iface=MIXER,name='PCM Playback Volume' numid=22,iface=MIXER,name='Line Input Function' numid=20,iface=MIXER,name='Line Out Function' numid=9,iface=MIXER,name='Mic Bias Level' numid=23,iface=MIXER,name='Mic Function' numid=5,iface=MIXER,name='HP DAC Playback Switch' numid=3,iface=MIXER,name='HP Driver Gain' numid=1,iface=MIXER,name='ICE1724 EEPROM' numid=21,iface=MIXER,name='Jack Function' numid=6,iface=MIXER,name='LO DAC Playback Switch' numid=4,iface=MIXER,name='LO Driver Gain' numid=18,iface=MIXER,name='Left DAC_L Mixer HP Switch' numid=19,iface=MIXER,name='Left DAC_L Mixer LO Switch' numid=13,iface=MIXER,name='Left PGA Mixer Line1L Switch' numid=14,iface=MIXER,name='Left PGA Mixer Line2L Switch' numid=15,iface=MIXER,name='Left PGA Mixer Line3L Switch' numid=7,iface=MIXER,name='PGA Capture Volume' numid=8,iface=MIXER,name='Program Registers' numid=16,iface=MIXER,name='Right DAC_R Mixer HP Switch' numid=17,iface=MIXER,name='Right DAC_R Mixer LO Switch' numid=10,iface=MIXER,name='Right PGA Mixer Line1R Switch' numid=11,iface=MIXER,name='Right PGA Mixer Line2R Switch' numid=12,iface=MIXER,name='Right PGA Mixer Line3R Switch' [root@OMAP2530EVM ~]# Can somebody tell me what all can be the reasons for this? Should I need to enable some option in the kernel? Regards, Arun

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[alsa-devel] alsa-driver 1.0.18a is out
by Jaroslav Kysela 12 Nov '08

12 Nov '08

Hi all, I released alsa-driver package 1.0.18a. The changelog is here: http://www.alsa-project.org/main/index.php/Changes_v1.0.18_v1.0.18a Jaroslav ----- Jaroslav Kysela <perex(a)perex.cz> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc.

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Re: [alsa-devel] [PATCH 1/3] introduce i830_hdmi_priv.has_hdmi_sink
by Wu Fengguang 12 Nov '08

12 Nov '08

On Wed, Nov 12, 2008 at 03:27:47PM +0800, Wang, Zhenyu Z wrote: > On 2008.11.07 14:23:39 +0800, Wu Fengguang wrote: > > HDMI is compatible with DVI, and we've seen many boards that > > use HDMI port for DVI output. > > > > So Zhenyu proposed this flag: i830_hdmi_priv.has_hdmi_sink > > to indicate the presence of HDMI capable monitors. > > > > Signed-off-by: Wu Fengguang <wfg(a)linux.intel.com> > We should check if the symbol is available for xserver compatiblity. > So below is updated patch for check this. > + > + if (xf86LoaderCheckSymbol("xf86MonitorIsHDMI") && > + xf86MonitorIsHDMI(edid_mon)) > + dev_priv->has_hdmi_sink = TRUE; I'm OK with the backward compatibility check. The side effect is that audio output won't be enabled for old xservers. Thanks, Fengguang

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[alsa-devel] to get the detail information of a codec
by Wayne 12 Nov '08

12 Nov '08

Hi all, Now I'm writing a program which can list some capabilities of my codec, such as what rates and formats my codec supports. By typing 'cat /proc/asound/card0/codec#0', you can see the detail of your card. I want to write a program which can show these information by alsa-lib. However, I couldn't find a function in alsa-lib which can tell me the formats and rates. Is there a way to get this detail? By the way, my card is intel-hda and the codec is alc268. Another question is I've seen the word "element" in many function, such as snd_ctl_event_elem_get_device. What "element" means in alsa world? I couldn't find any artile mentioning it!!! Thanks all!!! Wayne _________________________________________________________________ Discover the new Windows Vista http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE

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[alsa-devel] Dell Vostro 1710 laptop
by Tim Uckun 12 Nov '08

12 Nov '08

Hey all. I have a dell vostro 1710 laptop running hardy. The sound has never worked perfectly on this model. The built in mic doesn't work but a mic plugged into the jack works. The speakers sound terrible and they are not loud enough. The sound also dies frequently especially I am on youtube a lot (could be due to a flash/firefox problem too). I have to restart the alsa service in order to get it going again. Until recently I was running the option model=dell-m42 but a recent kernel upgrade broke that. I fiddled with some more options and settled on model=dell. I don't know if any of these problems will be solved by upgrading ubuntu but I wanted to report the problems anyway. I have been googling around I can't see anybody else using a vostro 1710 with linux. The alsa information is here. http://www.alsa-project.org/db/?f=a27b1377d3d2f472364ead7a04a1db7360affecd

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