From mboxrd@z Thu Jan 1 00:00:00 1970 From: Torsten Schenk Subject: TerraTec DMX 6Fire USB updates Date: Thu, 31 Mar 2011 21:25:23 +0200 Message-ID: <12f0d60921e.7616534511239462585.4849758772336073987@zoho.com> References: <12d995c1fa0.477955495632923443.5387390398635058860@zoho.com> <12da59486cd.-2882799020629445819.-7235974021966893201@zoho.com> <12da867d460.-8772675728917411279.-4777530225625691984@zoho.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_2551_538764875.1301599523353" Return-path: Received: from sender1.zohomail.com (sender1.zohomail.com [72.5.230.95]) by alsa0.perex.cz (Postfix) with ESMTP id 70BC010380D for ; Thu, 31 Mar 2011 21:25:25 +0200 (CEST) In-Reply-To: <12da867d460.-8772675728917411279.-4777530225625691984@zoho.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Takashi Iwai Cc: alsa-devel@alsa-project.org, clemens@ladisch.de List-Id: alsa-devel@alsa-project.org ------=_Part_2551_538764875.1301599523353 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Hello everyone, The driver I wrote for the 6fire usb is now in use by some people so that I got feedback. This enabled me to improve and bugfix some things. Here the patch. Greets, Torsten ------=_Part_2551_538764875.1301599523353 Content-Type: application/octet-stream; name=usb6fire.patch Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=usb6fire.patch Signed-off-by: Torsten Schenk diff -Nur a/sound/usb/6fire/chip.c b/sound/usb/6fire/chip.c --- a/sound/usb/6fire/chip.c 2011-03-31 21:14:19.576972975 +0200 +++ b/sound/usb/6fire/chip.c 2011-03-31 21:07:57.019973211 +0200 @@ -5,7 +5,7 @@ * * Author: Torsten Schenk * Created: Jan 01, 2011 - * Version: 0.3.0 + * Version: 0.3.4 * Copyright: (C) Torsten Schenk * * This program is free software; you can redistribute it and/or modify @@ -29,7 +29,7 @@ #include MODULE_AUTHOR("Torsten Schenk "); -MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver, version 0.3.0"); +MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver, version 0.3.4"); MODULE_LICENSE("GPL v2"); MODULE_SUPPORTED_DEVICE("{{TerraTec, DMX 6Fire USB}}"); diff -Nur a/sound/usb/6fire/control.c b/sound/usb/6fire/control.c --- a/sound/usb/6fire/control.c 2011-03-31 21:14:19.575972963 +0200 +++ b/sound/usb/6fire/control.c 2011-03-31 21:07:57.018973241 +0200 @@ -5,7 +5,7 @@ * * Author: Torsten Schenk * Created: Jan 01, 2011 - * Version: 0.3.0 + * Version: 0.3.4 * Copyright: (C) Torsten Schenk * * This program is free software; you can redistribute it and/or modify @@ -65,6 +65,15 @@ { 0 } /* TERMINATING ENTRY */ }; +static const int rates_altsetting[] = { 1, 1, 2, 2, 3, 3 }; +/* values to write to soundcard register for all samplerates */ +static const u16 rates_6fire_vl[] = {0x00, 0x01, 0x00, 0x01, 0x00, 0x01}; +static const u16 rates_6fire_vh[] = {0x11, 0x11, 0x10, 0x10, 0x00, 0x00}; + +enum { + DIGITAL_THRU_ONLY_SAMPLERATE = 3 +}; + static void usb6fire_control_master_vol_update(struct control_runtime *rt) { struct comm_runtime *comm_rt = rt->chip->comm; @@ -95,6 +104,67 @@ } } +static int usb6fire_control_set_rate(struct control_runtime *rt, int rate) +{ + int ret; + struct usb_device *device = rt->chip->dev; + struct comm_runtime *comm_rt = rt->chip->comm; + + if (rate < 0 || rate >= CONTROL_N_RATES) + return -EINVAL; + + ret = usb_set_interface(device, 1, rates_altsetting[rate]); + if (ret < 0) + return ret; + + /* set soundcard clock */ + ret = comm_rt->write16(comm_rt, 0x02, 0x01, rates_6fire_vl[rate], + rates_6fire_vh[rate]); + if (ret < 0) + return ret; + + return 0; +} + +static int usb6fire_control_set_channels( + struct control_runtime *rt, int n_analog_out, + int n_analog_in, bool spdif_out, bool spdif_in) +{ + int ret; + struct comm_runtime *comm_rt = rt->chip->comm; + + /* enable analog inputs and outputs + * (one bit per stereo-channel) */ + ret = comm_rt->write16(comm_rt, 0x02, 0x02, + (1 << (n_analog_out / 2)) - 1, + (1 << (n_analog_in / 2)) - 1); + if (ret < 0) + return ret; + + /* disable digital inputs and outputs */ + /* TODO: use spdif_x to enable/disable digital channels */ + ret = comm_rt->write16(comm_rt, 0x02, 0x03, 0x00, 0x00); + if (ret < 0) + return ret; + + return 0; +} + +static int usb6fire_control_streaming_update(struct control_runtime *rt) +{ + struct comm_runtime *comm_rt = rt->chip->comm; + + if (comm_rt) { + if (!rt->usb_streaming && rt->digital_thru_switch) + usb6fire_control_set_rate(rt, + DIGITAL_THRU_ONLY_SAMPLERATE); + return comm_rt->write16(comm_rt, 0x02, 0x00, 0x00, + (rt->usb_streaming ? 0x01 : 0x00) | + (rt->digital_thru_switch ? 0x08 : 0x00)); + } + return -EINVAL; +} + static int usb6fire_control_master_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { @@ -195,6 +265,38 @@ return 0; } +static int usb6fire_control_digital_thru_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int usb6fire_control_digital_thru_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct control_runtime *rt = snd_kcontrol_chip(kcontrol); + int changed = 0; + + if (rt->digital_thru_switch != ucontrol->value.integer.value[0]) { + rt->digital_thru_switch = ucontrol->value.integer.value[0]; + usb6fire_control_streaming_update(rt); + changed = 1; + } + return changed; +} + +static int usb6fire_control_digital_thru_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct control_runtime *rt = snd_kcontrol_chip(kcontrol); + ucontrol->value.integer.value[0] = rt->digital_thru_switch; + return 0; +} + static struct __devinitdata snd_kcontrol_new elements[] = { { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, @@ -223,6 +325,15 @@ .get = usb6fire_control_opt_coax_get, .put = usb6fire_control_opt_coax_put }, + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Digital Thru Playback Route", + .index = 0, + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, + .info = usb6fire_control_digital_thru_info, + .get = usb6fire_control_digital_thru_get, + .put = usb6fire_control_digital_thru_put + }, {} }; @@ -238,6 +349,9 @@ return -ENOMEM; rt->chip = chip; + rt->update_streaming = usb6fire_control_streaming_update; + rt->set_rate = usb6fire_control_set_rate; + rt->set_channels = usb6fire_control_set_channels; i = 0; while (init_data[i].type) { @@ -249,6 +363,7 @@ usb6fire_control_opt_coax_update(rt); usb6fire_control_line_phono_update(rt); usb6fire_control_master_vol_update(rt); + usb6fire_control_streaming_update(rt); i = 0; while (elements[i].name) { diff -Nur a/sound/usb/6fire/control.h b/sound/usb/6fire/control.h --- a/sound/usb/6fire/control.h 2011-03-31 21:14:19.575972963 +0200 +++ b/sound/usb/6fire/control.h 2011-03-31 21:07:57.018973241 +0200 @@ -3,7 +3,7 @@ * * Author: Torsten Schenk * Created: Jan 01, 2011 - * Version: 0.3.0 + * Version: 0.3.4 * Copyright: (C) Torsten Schenk * * This program is free software; you can redistribute it and/or modify @@ -21,12 +21,29 @@ CONTROL_MAX_ELEMENTS = 32 }; +enum { + CONTROL_RATE_44KHZ, + CONTROL_RATE_48KHZ, + CONTROL_RATE_88KHZ, + CONTROL_RATE_96KHZ, + CONTROL_RATE_176KHZ, + CONTROL_RATE_192KHZ, + CONTROL_N_RATES +}; + struct control_runtime { + int (*update_streaming)(struct control_runtime *rt); + int (*set_rate)(struct control_runtime *rt, int rate); + int (*set_channels)(struct control_runtime *rt, int n_analog_out, + int n_analog_in, bool spdif_out, bool spdif_in); + struct sfire_chip *chip; struct snd_kcontrol *element[CONTROL_MAX_ELEMENTS]; bool opt_coax_switch; bool line_phono_switch; + bool digital_thru_switch; + bool usb_streaming; u8 master_vol; }; diff -Nur a/sound/usb/6fire/firmware.c b/sound/usb/6fire/firmware.c --- a/sound/usb/6fire/firmware.c 2011-03-31 21:14:19.575972963 +0200 +++ b/sound/usb/6fire/firmware.c 2011-03-31 21:13:35.730973001 +0200 @@ -3,15 +3,9 @@ * * Firmware loader * - * Currently not working for all devices. To be able to use the device - * in linux, it is also possible to let the windows driver upload the firmware. - * For that, start the computer in windows and reboot. - * As long as the device is connected to the power supply, no firmware reload - * needs to be performed. - * * Author: Torsten Schenk * Created: Jan 01, 2011 - * Version: 0.3.0 + * Version: 0.3.4 * Copyright: (C) Torsten Schenk * * This program is free software; you can redistribute it and/or modify @@ -72,6 +66,10 @@ 0x94, 0x01, 0x5c, 0x02 /* alt 3: 404 EP2 and 604 EP6 (25 fpp) */ }; +static const u8 known_fw_versions[][4] = { + { 0x03, 0x01, 0x0b, 0x00 } +}; + struct ihex_record { u16 address; u8 len; @@ -254,6 +252,7 @@ ret = usb6fire_fw_ihex_init(fw, rec); if (ret < 0) { kfree(rec); + release_firmware(fw); snd_printk(KERN_ERR PREFIX "error validating ezusb " "firmware %s.\n", fwname); return ret; @@ -363,6 +362,25 @@ return 0; } +/* check, if the firmware version the devices has currently loaded + * is known by this driver. 'version' needs to have 4 bytes version + * info data. */ +static int usb6fire_fw_check(u8 *version) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(known_fw_versions); i++) + if (!memcmp(version, known_fw_versions, 4)) + return 0; + + snd_printk(KERN_ERR PREFIX "invalid fimware version in device: " + "%02x %02x %02x %02x. " + "please reconnect to power. if this failure " + "still happens, check your firmware installation.", + version[0], version[1], version[2], version[3]); + return -EINVAL; +} + int usb6fire_fw_init(struct usb_interface *intf) { int i; @@ -378,9 +396,12 @@ "firmware state.\n"); return ret; } - if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55 - || buffer[4] != 0x03 || buffer[5] != 0x01 || buffer[7] - != 0x00) { + snd_printk(KERN_ERR PREFIX "device firmware state" + ": "); + for (i = 0; i < 8; i++) + snd_printk("%02x ", buffer[i]); + snd_printk("\n"); + if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55) { snd_printk(KERN_ERR PREFIX "unknown device firmware state " "received from device: "); for (i = 0; i < 8; i++) @@ -389,7 +410,7 @@ return -EIO; } /* do we need fpga loader ezusb firmware? */ - if (buffer[3] == 0x01 && buffer[6] == 0x19) { + if (buffer[3] == 0x01) { ret = usb6fire_fw_ezusb_upload(intf, "6fire/dmx6firel2.ihx", 0, NULL, 0); if (ret < 0) @@ -397,7 +418,10 @@ return FW_NOT_READY; } /* do we need fpga firmware and application ezusb firmware? */ - else if (buffer[3] == 0x02 && buffer[6] == 0x0b) { + else if (buffer[3] == 0x02) { + ret = usb6fire_fw_check(buffer + 4); + if (ret < 0) + return ret; ret = usb6fire_fw_fpga_upload(intf, "6fire/dmx6firecf.bin"); if (ret < 0) return ret; @@ -410,8 +434,8 @@ return FW_NOT_READY; } /* all fw loaded? */ - else if (buffer[3] == 0x03 && buffer[6] == 0x0b) - return 0; + else if (buffer[3] == 0x03) + return usb6fire_fw_check(buffer + 4); /* unknown data? */ else { snd_printk(KERN_ERR PREFIX "unknown device firmware state " diff -Nur a/sound/usb/6fire/firmware.h b/sound/usb/6fire/firmware.h --- a/sound/usb/6fire/firmware.h 2011-03-31 21:14:19.576972975 +0200 +++ b/sound/usb/6fire/firmware.h 2011-03-31 21:13:59.276973000 +0200 @@ -1,8 +1,9 @@ /* * Linux driver for TerraTec DMX 6Fire USB * - * Author: Torsten Schenk - * Created: Jan 01, 2011 + * Author: Torsten Schenk + * Created: Jan 01, 2011 + * Version: 0.3.0 * Copyright: (C) Torsten Schenk * * This program is free software; you can redistribute it and/or modify diff -Nur a/sound/usb/6fire/pcm.c b/sound/usb/6fire/pcm.c --- a/sound/usb/6fire/pcm.c 2011-03-31 21:14:19.575972963 +0200 +++ b/sound/usb/6fire/pcm.c 2011-03-31 21:07:57.017973262 +0200 @@ -5,7 +5,7 @@ * * Author: Torsten Schenk * Created: Jan 01, 2011 - * Version: 0.3.0 + * Version: 0.3.4 * Copyright: (C) Torsten Schenk * * This program is free software; you can redistribute it and/or modify @@ -17,26 +17,23 @@ #include "pcm.h" #include "chip.h" #include "comm.h" +#include "control.h" enum { OUT_N_CHANNELS = 6, IN_N_CHANNELS = 4 }; /* keep next two synced with - * FW_EP_W_MAX_PACKET_SIZE[] and RATES_MAX_PACKET_SIZE */ + * FW_EP_W_MAX_PACKET_SIZE[] and RATES_MAX_PACKET_SIZE + * and CONTROL_RATE_XXX in control.h */ static const int rates_in_packet_size[] = { 228, 228, 420, 420, 404, 404 }; static const int rates_out_packet_size[] = { 228, 228, 420, 420, 604, 604 }; static const int rates[] = { 44100, 48000, 88200, 96000, 176400, 192000 }; -static const int rates_altsetting[] = { 1, 1, 2, 2, 3, 3 }; static const int rates_alsaid[] = { SNDRV_PCM_RATE_44100, SNDRV_PCM_RATE_48000, SNDRV_PCM_RATE_88200, SNDRV_PCM_RATE_96000, SNDRV_PCM_RATE_176400, SNDRV_PCM_RATE_192000 }; -/* values to write to soundcard register for all samplerates */ -static const u16 rates_6fire_vl[] = {0x00, 0x01, 0x00, 0x01, 0x00, 0x01}; -static const u16 rates_6fire_vh[] = {0x11, 0x11, 0x10, 0x10, 0x00, 0x00}; - enum { /* settings for pcm */ OUT_EP = 6, IN_EP = 2, MAX_BUFSIZE = 128 * 1024 }; @@ -48,15 +45,6 @@ STREAM_STOPPING }; -enum { /* pcm sample rates (also index into RATES_XXX[]) */ - RATE_44KHZ, - RATE_48KHZ, - RATE_88KHZ, - RATE_96KHZ, - RATE_176KHZ, - RATE_192KHZ -}; - static const struct snd_pcm_hardware pcm_hw = { .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | @@ -64,7 +52,7 @@ SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BATCH, - .formats = SNDRV_PCM_FMTBIT_S24_LE, + .formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE, .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | @@ -87,57 +75,34 @@ static int usb6fire_pcm_set_rate(struct pcm_runtime *rt) { int ret; - struct usb_device *device = rt->chip->dev; - struct comm_runtime *comm_rt = rt->chip->comm; + struct control_runtime *ctrl_rt = rt->chip->control; - if (rt->rate >= ARRAY_SIZE(rates)) - return -EINVAL; - /* disable streaming */ - ret = comm_rt->write16(comm_rt, 0x02, 0x00, 0x00, 0x00); + ctrl_rt->usb_streaming = false; + ret = ctrl_rt->update_streaming(ctrl_rt); if (ret < 0) { snd_printk(KERN_ERR PREFIX "error stopping streaming while " "setting samplerate %d.\n", rates[rt->rate]); return ret; } - ret = usb_set_interface(device, 1, rates_altsetting[rt->rate]); - if (ret < 0) { - snd_printk(KERN_ERR PREFIX "error setting interface " - "altsetting %d for samplerate %d.\n", - rates_altsetting[rt->rate], rates[rt->rate]); - return ret; - } - - /* set soundcard clock */ - ret = comm_rt->write16(comm_rt, 0x02, 0x01, rates_6fire_vl[rt->rate], - rates_6fire_vh[rt->rate]); + ret = ctrl_rt->set_rate(ctrl_rt, rt->rate); if (ret < 0) { snd_printk(KERN_ERR PREFIX "error setting samplerate %d.\n", rates[rt->rate]); return ret; } - /* enable analog inputs and outputs - * (one bit per stereo-channel) */ - ret = comm_rt->write16(comm_rt, 0x02, 0x02, - (1 << (OUT_N_CHANNELS / 2)) - 1, - (1 << (IN_N_CHANNELS / 2)) - 1); + ret = ctrl_rt->set_channels(ctrl_rt, OUT_N_CHANNELS, IN_N_CHANNELS, + false, false); if (ret < 0) { - snd_printk(KERN_ERR PREFIX "error initializing analog channels " + snd_printk(KERN_ERR PREFIX "error initializing channels " "while setting samplerate %d.\n", rates[rt->rate]); return ret; } - /* disable digital inputs and outputs */ - ret = comm_rt->write16(comm_rt, 0x02, 0x03, 0x00, 0x00); - if (ret < 0) { - snd_printk(KERN_ERR PREFIX "error initializing digital " - "channels while setting samplerate %d.\n", - rates[rt->rate]); - return ret; - } - ret = comm_rt->write16(comm_rt, 0x02, 0x00, 0x00, 0x01); + ctrl_rt->usb_streaming = true; + ret = ctrl_rt->update_streaming(ctrl_rt); if (ret < 0) { snd_printk(KERN_ERR PREFIX "error starting streaming while " "setting samplerate %d.\n", rates[rt->rate]); @@ -168,12 +133,15 @@ static void usb6fire_pcm_stream_stop(struct pcm_runtime *rt) { int i; + struct control_runtime *ctrl_rt = rt->chip->control; if (rt->stream_state != STREAM_DISABLED) { for (i = 0; i < PCM_N_URBS; i++) { usb_kill_urb(&rt->in_urbs[i].instance); usb_kill_urb(&rt->out_urbs[i].instance); } + ctrl_rt->usb_streaming = false; + ctrl_rt->update_streaming(ctrl_rt); rt->stream_state = STREAM_DISABLED; } } @@ -228,7 +196,7 @@ unsigned int total_length = 0; struct pcm_runtime *rt = snd_pcm_substream_chip(sub->instance); struct snd_pcm_runtime *alsa_rt = sub->instance->runtime; - u32 *src = (u32 *) urb->buffer; + u32 *src = NULL; u32 *dest = (u32 *) (alsa_rt->dma_area + sub->dma_off * (alsa_rt->frame_bits >> 3)); u32 *dest_end = (u32 *) (alsa_rt->dma_area + alsa_rt->buffer_size @@ -244,7 +212,12 @@ else frame_count = 0; - src = (u32 *) (urb->buffer + total_length); + if (alsa_rt->format == SNDRV_PCM_FORMAT_S24_LE) + src = (u32 *) (urb->buffer + total_length); + else if (alsa_rt->format == SNDRV_PCM_FORMAT_S32_LE) + src = (u32 *) (urb->buffer - 1 + total_length); + else + return; src++; /* skip leading 4 bytes of every packet */ total_length += urb->packets[i].length; for (frame = 0; frame < frame_count; frame++) { @@ -274,9 +247,18 @@ * (alsa_rt->frame_bits >> 3)); u32 *src_end = (u32 *) (alsa_rt->dma_area + alsa_rt->buffer_size * (alsa_rt->frame_bits >> 3)); - u32 *dest = (u32 *) urb->buffer; + u32 *dest; int bytes_per_frame = alsa_rt->channels << 2; + if (alsa_rt->format == SNDRV_PCM_FORMAT_S32_LE) + dest = (u32 *) (urb->buffer - 1); + else if (alsa_rt->format == SNDRV_PCM_FORMAT_S24_LE) + dest = (u32 *) (urb->buffer); + else { + snd_printk(KERN_ERR PREFIX "Unknown sample format."); + return; + } + for (i = 0; i < PCM_N_PACKETS_PER_URB; i++) { /* at least 4 header bytes for valid packet. * after that: 32 bits per sample for analog channels */ @@ -480,7 +462,6 @@ struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub); struct pcm_substream *sub = usb6fire_pcm_get_substream(alsa_sub); struct snd_pcm_runtime *alsa_rt = alsa_sub->runtime; - int i; int ret; if (rt->panic) @@ -493,12 +474,10 @@ sub->period_off = 0; if (rt->stream_state == STREAM_DISABLED) { - for (i = 0; i < ARRAY_SIZE(rates); i++) - if (alsa_rt->rate == rates[i]) { - rt->rate = i; + for (rt->rate = 0; rt->rate < ARRAY_SIZE(rates); rt->rate++) + if (alsa_rt->rate == rates[rt->rate]) break; - } - if (i == ARRAY_SIZE(rates)) { + if (rt->rate == ARRAY_SIZE(rates)) { mutex_unlock(&rt->stream_mutex); snd_printk("invalid rate %d in prepare.\n", alsa_rt->rate); diff -Nur a/sound/usb/Kconfig b/sound/usb/Kconfig --- a/sound/usb/Kconfig 2011-03-31 21:14:19.574972947 +0200 +++ b/sound/usb/Kconfig 2011-03-31 21:07:57.017973262 +0200 @@ -100,7 +100,6 @@ config SND_USB_6FIRE tristate "TerraTec DMX 6Fire USB" - depends on EXPERIMENTAL select FW_LOADER select SND_RAWMIDI select SND_PCM @@ -111,5 +111,3 @@ - after it has been coldstarted. This driver currently does not support - firmware loading for all devices. If you own such a device, - you could start windows and let the windows driver upload - the firmware. As long as you do not unplug your device from power, - it should be usable. + after it has been coldstarted. An install script for the firmware + and further help can be found at + http://sixfireusb.sourceforge.net ------=_Part_2551_538764875.1301599523353 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel ------=_Part_2551_538764875.1301599523353--