June 2008 - Alsa-devel - mailman.alsa-project.org

[alsa-devel] Audigy bay protocol
by Tony "Chainsaw" Vroon 01 Jul '08

01 Jul '08

Good afternoon, Having spent some time looking at the MIDI that the internal/external Audigy bays emit, I noticed that they report more then is currently used by the LIRC driver. There is one thing missing in here, which is how to control the bay power LED (which is supposed to blink when the card is muted) and the CMSS LED. I am not sure whether this is controlled through MIDI SysEx sequences or through other means. Due to an annoying hardware failure in my Audigy 4 Pro I can not continue this endeavour, but I want to share what I have. Based on this, perhaps one can extend the EMU10K1/2 driver a bit with headphone muting and volume control through the bay. With thanks to the libdouze author, Arnaud de Bossoreille de Ribou. Midi System Exclusive ( extended manufacturer id == 0x2021 ) Payload for 61 bay message: 61 00 01 00 XX YY XX 00 = button push event 01 = volume knob event 02 = jack sense event For XX=00 button push: Bit 1: CMSS Bit 2: Mute For XX=01 volume knob: Bit 1: Always set Bit 7: Set for downward adjustment, unset for upward adjustment For XX=02 jack sense: YY contains jacks Bit 1: headphone Bit 2: digital out (back of bay) Response to initialization: Midi System Exclusive ( extended manufacturer id == 0x2021, payload == | 60 00 02 03 | ) <-- Unknown, bay version? Midi System Exclusive ( extended manufacturer id == 0x2021, payload == | 61 00 01 00 02 01 | ) <-- Jack sense update I hope it is of use to someone. Regards, Tony V.

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Re: [alsa-devel] looping S/PDIF data
by Rene Herman 01 Jul '08

01 Jul '08

On 17-06-08 21:55, Pierre Ossman wrote: > Ping > > On Sat, 31 May 2008 11:26:06 +0200 > Pierre Ossman <drzeus-list(a)drzeus.cx> wrote: > >> I have a minor annoyance with the snd_trident driver that I was hoping >> you might have a fix for: >> >> Pausing the output does not seem to take on the S/PDIF output. Analog >> outputs properly stop in their tracks, but the S/PDIF port keeps >> looping the current data buffer, which gives a rather unpleasant end >> result. :) Try the alsa-devel list... Rene.

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[alsa-devel] [PATCH] [alsa-utils] Fix build with library options disabled
by Sean McNamara 01 Jul '08

01 Jul '08

Hello, It's been a perennial problem with alsa-utils that there is no configure option to disable the seq and amidi apps. These apps depend on how you configured alsa-lib: If you pass --disable-seq --disable-instr to the alsa-lib configure, there does not currently exist a configure-time option to allow alsa-utils to build against this particular alsa-lib. Of course, you could hack makefiles and stuff so it doesn't build seq and amidi, but I thought it would be nice to commit changes to the configure.in and Makefile.am to upstream, so that we can disable seq and amidi the "right" way. The attached patches are diffed against the latest revision of alsa-utils. With this change, you can: 1. Disable building amidi by passing --disable-midi to the configure in alsa-utils. 2. Disable building seq by passing --disable-seq to the configure in alsa-utils. With this change, we can get a "good" build of alsa-utils (albeit, missing two of the utilities, which is intended) in the following circumstances: 1. seq and instr are DISABLED in alsa-lib; seq and midi are DISABLED in alsa-utils 2. seq and instr are ENABLED in alsa-lib; seq and midi are ENABLED in alsa-utils (the default). 3. seq and instr are ENABLED in alsa-lib; seq and midi are DISABLED in alsa-utils. Of course, it does not build cleanly if seq and instr are DISABLED in alsa-lib, but seq and midi are ENABLED in alsa-utils. Patches are attached -- please let me know if there any issues, and if not, could one of the committers please commit them. Thanks, Sean

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[alsa-devel] [PATCH] Add some system information to alsa-info.sh output
by Travis Place 01 Jul '08

01 Jul '08

First some information about this.. I was planning on using dmidecode to fetch this information, but that required 1) the script be run as root, and 2) requires the user to have dmidecode installed (most people wouldnt). So we fetch from /sys/ (if available). Patch attached. Changelog: Fetch the board_vendor, product_version and product_name from DMI in /sys/ (if available). Increased alsa-info.sh version to 0.4.49. Signed-off-by: Travis Place <wishie(a)wishie.net>

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[alsa-devel] [PATCH/RFC 1/2] Add jack reporting API for ALSA
by Mark Brown 01 Jul '08

01 Jul '08

Currently very few systems provide information about jack status to user space, even though many have hardware facilities to do detection. Those systems that do use an input device with the existing SW_HEADPHONE_INSERT switch type to do so, often independently of ALSA. This patch introduces a standard method for representing jacks to user space into ALSA. It allows drivers to register jacks for a sound card with the input subsystem, binding the input device to the card to help user space associate the input devices with their sound cards. The created input devices are named in the form "card longname jack" where jack is provided by the driver when allocating a jack. The existing user space API with SW_HEADPHONE_INSERT is preserved. Signed-off-by: Mark Brown <broonie(a)opensource.wolfsonmicro.com> --- include/sound/core.h | 1 + include/sound/jack.h | 51 +++++++++++++++++++ sound/core/Kconfig | 5 ++ sound/core/Makefile | 2 + sound/core/jack.c | 136 ++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 195 insertions(+), 0 deletions(-) create mode 100644 include/sound/jack.h create mode 100644 sound/core/jack.c diff --git a/include/sound/core.h b/include/sound/core.h index ee2d7e1..8c87713 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -53,6 +53,7 @@ typedef int __bitwise snd_device_type_t; #define SNDRV_DEV_INFO ((__force snd_device_type_t) 0x1006) #define SNDRV_DEV_BUS ((__force snd_device_type_t) 0x1007) #define SNDRV_DEV_CODEC ((__force snd_device_type_t) 0x1008) +#define SNDRV_DEV_JACK ((__force snd_device_type_t) 0x1009) #define SNDRV_DEV_LOWLEVEL ((__force snd_device_type_t) 0x2000) typedef int __bitwise snd_device_state_t; diff --git a/include/sound/jack.h b/include/sound/jack.h new file mode 100644 index 0000000..e5ac26c --- /dev/null +++ b/include/sound/jack.h @@ -0,0 +1,51 @@ +#ifndef __SOUND_JACK_H +#define __SOUND_JACK_H + +/* + * Jack abstraction layer + * + * Copyright 2008 Wolfson Microelectronics plc + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <sound/core.h> + +struct input_dev; + +/** + * Jack types which can be reported. These values are used as a + * bitmask. + */ +enum snd_jack_types { + SND_JACK_HEADPHONE = 0x0001, +}; + +struct snd_jack { + struct input_dev *input_dev; + int registered; + int type; + const char *id; + char name[100]; +}; + +int snd_jack_new(struct snd_card *card, const char *id, int type, + struct snd_jack **jack); + +void snd_jack_report(struct snd_jack *jack, int status); + +#endif diff --git a/sound/core/Kconfig b/sound/core/Kconfig index 829ca38..4e8e52d 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -16,6 +16,11 @@ config SND_RAWMIDI tristate depends on SND +config SND_JACK + tristate + depends on SND + depends on INPUT + config SND_SEQUENCER tristate "Sequencer support" depends on SND diff --git a/sound/core/Makefile b/sound/core/Makefile index 5a01c76..e1cb6d6 100644 --- a/sound/core/Makefile +++ b/sound/core/Makefile @@ -20,9 +20,11 @@ snd-rawmidi-objs := rawmidi.o snd-timer-objs := timer.o snd-rtctimer-objs := rtctimer.o snd-hwdep-objs := hwdep.o +snd-jack-objs := jack.o obj-$(CONFIG_SND) += snd.o obj-$(CONFIG_SND_HWDEP) += snd-hwdep.o +obj-$(CONFIG_SND_JACK) += snd-jack.o obj-$(CONFIG_SND_TIMER) += snd-timer.o obj-$(CONFIG_SND_RTCTIMER) += snd-rtctimer.o obj-$(CONFIG_SND_PCM) += snd-pcm.o snd-page-alloc.o diff --git a/sound/core/jack.c b/sound/core/jack.c new file mode 100644 index 0000000..1a52997 --- /dev/null +++ b/sound/core/jack.c @@ -0,0 +1,136 @@ +/* + * Jack abstraction layer + * + * Copyright 2008 Wolfson Microelectronics + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/input.h> +#include <sound/jack.h> +#include <sound/core.h> + +static int snd_jack_dev_free(struct snd_device *device) +{ + struct snd_jack *jack = device->device_data; + + /* If the input device is registered with the input subsystem + * then we need to use a different deallocator. */ + if (jack->registered) + input_unregister_device(jack->input_dev); + else + input_free_device(jack->input_dev); + + kfree(jack); + + return 0; +} + +static int snd_jack_dev_register(struct snd_device *device) +{ + struct snd_jack *jack = device->device_data; + struct snd_card *card = device->card; + int err; + + snprintf(jack->name, sizeof(jack->name), "%s %s", + card->longname, jack->id); + jack->input_dev->name = jack->name; + + err = input_register_device(jack->input_dev); + if (err == 0) + jack->registered = 1; + + return err; +} + +/** + * snd_jack_new - Create a new jack + * @card: the card instance + * @id: an identifying string for this jack + * @type: a bitmask of enum snd_jack_type values that can be detected by + * this jack + * @jjack: Used to provide the allocated jack object to the caller. + * + * Creates a new jack object. + * + * Returns zero if successful, or a negative error code on failure. + * On success jjack will be initialised. + */ +int snd_jack_new(struct snd_card *card, const char *id, int type, + struct snd_jack **jjack) +{ + struct snd_jack *jack; + int err; + static struct snd_device_ops ops = { + .dev_free = snd_jack_dev_free, + .dev_register = snd_jack_dev_register, + }; + + jack = kzalloc(sizeof(struct snd_jack), GFP_KERNEL); + if (jack == NULL) + return -ENOMEM; + + jack->id = id; + + jack->input_dev = input_allocate_device(); + if (jack->input_dev == NULL) { + err = -ENOMEM; + goto fail_input; + } + + jack->input_dev->phys = "ALSA"; + jack->input_dev->dev.parent = card->dev; + + jack->type = type; + + if (type & SND_JACK_HEADPHONE) + input_set_capability(jack->input_dev, EV_SW, + SW_HEADPHONE_INSERT); + + err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops); + if (err < 0) + goto fail_input; + + *jjack = jack; + + return 0; + +fail_input: + input_free_device(jack->input_dev); + kfree(jack); + return err; +} +EXPORT_SYMBOL(snd_jack_new); + +/** + * snd_jack_report - Report the current status of a jack + * + * @jack: The jack to report status for + * @status: The current status of the jack + */ +void snd_jack_report(struct snd_jack *jack, int status) +{ + if (jack->type & SND_JACK_HEADPHONE) + input_report_switch(jack->input_dev, SW_HEADPHONE_INSERT, + status & SND_JACK_HEADPHONE); + + input_sync(jack->input_dev); +} +EXPORT_SYMBOL(snd_jack_report); + +MODULE_AUTHOR("Mark Brown <broonie(a)opensource.wolfsonmicro.com>"); +MODULE_DESCRIPTION("Jack detection support for ALSA"); +MODULE_LICENSE("GPL"); -- 1.5.5.1

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[alsa-devel] ALSA with Ubuntu 8.04
by Eliot Blennerhassett 28 Jun '08

28 Jun '08

This just an FYI In Ubuntu 8.04, ubuntu has packaged alsa-drivers including some out of tree drivers in a separate package: linux-ubuntu-modules-$kernelver This gets installed in /lib/modules/$kernelver/ubuntu/sound The only things installed in /lib/modules/$kernelver/sound are soundcore.ko and ac97_bus.ko However, when you do a default "make install" from alsa-driver source, the modules get installed in /lib/modules/$kernelver/kernel/sound So, now there are 2 copies of the drivers in different places. I have taken to removing (moving away to say /root) /lib/modules/$kernelver/ubuntu/sound to avoid any confusion and some odd module versioning problems that I was having. regards Eliot.

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[alsa-devel] softvol chokes on snd_pcm_rewind
by Lennart Poettering 28 Jun '08

28 Jun '08

Hey! On 1.0.16 softvol sometimes chokes on snd_pcm_rewind(): the command suceeds but the sound is heavily distorted from then on. Takashi, Jaroslav, is this known? Any short-term workaround? Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net ICQ# 11060553 http://0pointer.net/lennart/ GnuPG 0x1A015CC4

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[alsa-devel] emu20k1 in 1.0.17?
by daedra 28 Jun '08

28 Jun '08

I was just wondering if there is a chance of the emu20k1 driver making it's way into 1.0.17?

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[alsa-devel] seg fault with 1.0.17rc2
by Jerry Geis 27 Jun '08

27 Jun '08

#0 0xb7e892ff in memcpy () from /lib/tls/libc.so.6 #1 0xb74e40a9 in snd_pcm_area_copy (dst_area=0xb7125b70, dst_offset=0, src_area=0x81dc1c0, src_offset=170, samples=0, format=SND_PCM_FORMAT_S16_LE) at pcm.c:2589 #2 0xb74e438d in snd_pcm_areas_copy (dst_areas=0xb7125b7c, dst_offset=0, src_areas=0x81dc1cc, src_offset=170, channels=1, frames=122, format=SND_PCM_FORMAT_S16_LE) at pcm.c:2736 #3 0xb74ee0a1 in snd_pcm_mmap_read_areas (pcm=0x81de3b8, areas=0xb7125b70, offset=0, size=122) at pcm_mmap.c:151 #4 0xb74e350d in snd1_pcm_read_areas (pcm=0x81de3b8, areas=0xb7125b70, offset=0, size=122, func=0xb74edfd0 <snd_pcm_mmap_read_areas>) at pcm.c:6501 #5 0xb74ed2df in snd_pcm_mmap_readi (pcm=0x81de3b8, buffer=0xb6352a04, size=122) at pcm_mmap.c:236 #6 0xb74dbb14 in snd_pcm_readi (pcm=0x81de110, buffer=0xb6352a04, size=61) at pcm_local.h:526 #7 0xb756279b in alsa_read (chan=0x821c928) at chan_alsa.c:683 #8 0x080855b1 in __ast_read (chan=0x821c928, dropaudio=0) at channel.c:2100 I am using a usb-audio device. Bus 003 Device 001: ID 0000:0000 Bus 003 Device 002: ID 0d8c:000c C-Media Electronics, Inc. Audio Adapter Bus 002 Device 002: ID 13fe:1f00 Bus 002 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 001 Device 001: ID 0000:0000 I am using this as my asound.conf file pcm.usb-audio { type hw card 0 } ctl.usb-audio { type hw card 0 } I am using debian etch 2.6.18-6-486 #1 Fri Jun 6 21:47:01 UTC 2008 i486 GNU/Linux It works for a couple times then I get the seg fault. I am using the Console output from asterisk. help? Thanks, Jerry

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[alsa-devel] ALSA 1.0.17rc3 release (driver only)
by Jaroslav Kysela 27 Jun '08

27 Jun '08

Hello all, ALSA driver package v1.0.17rc3 is released. I hope that all remaining bugs for compilation with 2.4 kernels are fixed. Changes are available here: http://www.alsa-project.org/main/index.php/Changes_v1.0.17rc2_v1.0.17rc3 Jaroslav ----- Jaroslav Kysela <perex(a)perex.cz> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc.

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