* About HDMI audio driver @ 2009-12-29 7:56 Wei Ni 2009-12-29 8:31 ` Takashi Iwai 0 siblings, 1 reply; 5+ messages in thread From: Wei Ni @ 2009-12-29 7:56 UTC (permalink / raw) To: 'Takashi Iwai'; +Cc: Peer Chen, alsa-devel@alsa-project.org Hi, Takashi I'm a nvidia engineer. We plan to develop the new hdmi audio driver for the new chipset. It support the latest HD Audio Specification. I download the latest kernel source, it has patch_intelhdmi.c. And this file have many defines and routines for HDMI operations. If I develop hdmi driver, it also need to define the same functions in patch_nvhdmi.c, it seems not very well. Do you have plan to change these codes to common code? I think these codes are common for HDMI audio. BTW I have a another question. Because the standard ALSA channel mapping is different with the Windows setting. So we could use channel-slot assignment (verb 0x734) to fix. How can I know the audio is using ALSA setting or Windows setting? Does there have any mechanism to support this operation? Thanks Wei. ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. ----------------------------------------------------------------------------------- ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: About HDMI audio driver 2009-12-29 7:56 About HDMI audio driver Wei Ni @ 2009-12-29 8:31 ` Takashi Iwai 2009-12-29 8:43 ` Wei Ni 0 siblings, 1 reply; 5+ messages in thread From: Takashi Iwai @ 2009-12-29 8:31 UTC (permalink / raw) To: Wei Ni; +Cc: Peer Chen, alsa-devel@alsa-project.org At Tue, 29 Dec 2009 15:56:32 +0800, Wei Ni wrote: > > Hi, Takashi > I'm a nvidia engineer. We plan to develop the new hdmi audio driver for the new chipset. It support the latest HD Audio Specification. > I download the latest kernel source, it has patch_intelhdmi.c. And this file have many defines and routines for HDMI operations. > If I develop hdmi driver, it also need to define the same functions in patch_nvhdmi.c, it seems not very well. > Do you have plan to change these codes to common code? I think these codes are common for HDMI audio. Well, ideally, we merge all three patch_*hdmi.c into one, say, patch_hdmi.c. The merging of patch_atihdmi.c would be trivial, but nvidia one would need a bit more changes to add codec-specific setups. So, it'd be nice if you implement the newer code in that direction. > BTW I have a another question. > Because the standard ALSA channel mapping is different with the Windows setting. So we could use channel-slot assignment (verb 0x734) to fix. > How can I know the audio is using ALSA setting or Windows setting? Does there have any mechanism to support this operation? Right now there is no "Windows" setting on ALSA. The channel map is fixed as FL/FR/RL/RR/C/LFE/SL/SR. I have a plan to add an API for querying / changing the channel map, but it's still a vaporware. BTW, I'm on vacation from tomorrow until Jan. 10. So the reply may be delayed. thanks, Takashi ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: About HDMI audio driver 2009-12-29 8:31 ` Takashi Iwai @ 2009-12-29 8:43 ` Wei Ni 2010-01-12 10:54 ` Douglas Pearless 0 siblings, 1 reply; 5+ messages in thread From: Wei Ni @ 2009-12-29 8:43 UTC (permalink / raw) To: 'Takashi Iwai'; +Cc: Peer Chen, alsa-devel@alsa-project.org Ok, thanks for your reply. Happy holidays! Thanks Wei. -----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Tuesday, December 29, 2009 4:32 PM To: Wei Ni Cc: alsa-devel@alsa-project.org; Peer Chen Subject: Re: About HDMI audio driver At Tue, 29 Dec 2009 15:56:32 +0800, Wei Ni wrote: > > Hi, Takashi > I'm a nvidia engineer. We plan to develop the new hdmi audio driver for the new chipset. It support the latest HD Audio Specification. > I download the latest kernel source, it has patch_intelhdmi.c. And this file have many defines and routines for HDMI operations. > If I develop hdmi driver, it also need to define the same functions in patch_nvhdmi.c, it seems not very well. > Do you have plan to change these codes to common code? I think these codes are common for HDMI audio. Well, ideally, we merge all three patch_*hdmi.c into one, say, patch_hdmi.c. The merging of patch_atihdmi.c would be trivial, but nvidia one would need a bit more changes to add codec-specific setups. So, it'd be nice if you implement the newer code in that direction. > BTW I have a another question. > Because the standard ALSA channel mapping is different with the Windows setting. So we could use channel-slot assignment (verb 0x734) to fix. > How can I know the audio is using ALSA setting or Windows setting? Does there have any mechanism to support this operation? Right now there is no "Windows" setting on ALSA. The channel map is fixed as FL/FR/RL/RR/C/LFE/SL/SR. I have a plan to add an API for querying / changing the channel map, but it's still a vaporware. BTW, I'm on vacation from tomorrow until Jan. 10. So the reply may be delayed. thanks, Takashi ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. ----------------------------------------------------------------------------------- ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: About HDMI audio driver 2009-12-29 8:43 ` Wei Ni @ 2010-01-12 10:54 ` Douglas Pearless 2010-02-03 6:54 ` VDR User 0 siblings, 1 reply; 5+ messages in thread From: Douglas Pearless @ 2010-01-12 10:54 UTC (permalink / raw) To: alsa-devel Is there any progress here as I'd like to use the audio over HDMI on my GT220 ... Cheers Douglas. On 29/12/2009 9:43 p.m., Wei Ni wrote: > Ok, thanks for your reply. > Happy holidays! > > Thanks > Wei. > > -----Original Message----- > From: Takashi Iwai [mailto:tiwai@suse.de] > Sent: Tuesday, December 29, 2009 4:32 PM > To: Wei Ni > Cc: alsa-devel@alsa-project.org; Peer Chen > Subject: Re: About HDMI audio driver > > At Tue, 29 Dec 2009 15:56:32 +0800, > Wei Ni wrote: > >> Hi, Takashi >> I'm a nvidia engineer. We plan to develop the new hdmi audio driver for the new chipset. It support the latest HD Audio Specification. >> I download the latest kernel source, it has patch_intelhdmi.c. And this file have many defines and routines for HDMI operations. >> If I develop hdmi driver, it also need to define the same functions in patch_nvhdmi.c, it seems not very well. >> Do you have plan to change these codes to common code? I think these codes are common for HDMI audio. >> > Well, ideally, we merge all three patch_*hdmi.c into one, say, > patch_hdmi.c. The merging of patch_atihdmi.c would be trivial, but > nvidia one would need a bit more changes to add codec-specific > setups. > > So, it'd be nice if you implement the newer code in that direction. > > >> BTW I have a another question. >> Because the standard ALSA channel mapping is different with the Windows setting. So we could use channel-slot assignment (verb 0x734) to fix. >> How can I know the audio is using ALSA setting or Windows setting? Does there have any mechanism to support this operation? >> > Right now there is no "Windows" setting on ALSA. > The channel map is fixed as FL/FR/RL/RR/C/LFE/SL/SR. > > I have a plan to add an API for querying / changing the channel map, but > it's still a vaporware. > > BTW, I'm on vacation from tomorrow until Jan. 10. So the reply may be > delayed. > > > thanks, > > Takashi > ----------------------------------------------------------------------------------- > This email message is for the sole use of the intended recipient(s) and may contain > confidential information. Any unauthorized review, use, disclosure or distribution > is prohibited. If you are not the intended recipient, please contact the sender by > reply email and destroy all copies of the original message. > ----------------------------------------------------------------------------------- > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@alsa-project.org > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: About HDMI audio driver 2010-01-12 10:54 ` Douglas Pearless @ 2010-02-03 6:54 ` VDR User 0 siblings, 0 replies; 5+ messages in thread From: VDR User @ 2010-02-03 6:54 UTC (permalink / raw) To: Douglas Pearless; +Cc: alsa-devel On Tue, Jan 12, 2010 at 2:54 AM, Douglas Pearless <Douglas.Pearless@pearless.co.nz> wrote: > Is there any progress here as I'd like to use the audio over HDMI on my > GT220 ... > Cheers > Douglas. I'm interested as well as a few friends who really would love to see this work! Hopefully someone will respond with an update soon. Regards, Derek ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2010-02-03 6:54 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2009-12-29 7:56 About HDMI audio driver Wei Ni 2009-12-29 8:31 ` Takashi Iwai 2009-12-29 8:43 ` Wei Ni 2010-01-12 10:54 ` Douglas Pearless 2010-02-03 6:54 ` VDR User
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).