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[alsa-devel] Remove dynamic configuration from alsa-lib
by Fausto Carvalho Marques SIlva 08 Jul '07

08 Jul '07

I have a hard job...to remove dynamic configuration from alsa-lib (conf.c,confmisc.c). I found it difficult because snd_conf_* functions are spread all over *.c files. Is there am easy way of doing it ? Does anyone have some "guidelines" of doing it? Any help is wellcome... Fausto Carvalho Marques Silva

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[alsa-devel] hda-intel on macbook: unknown model for ACL882
by Steffen Schulz 07 Jul '07

07 Jul '07

Hi all, Since I didn't get much feedback on alsa-users, I figured I'd place a pointer here, too. The revision 3 macbook pro(santa-rosa) ships with a ALC882. Loading hda_intel with auto-detection results in very VERY quiet sound out of the headphones if 'front' is set to 100%, mic input seems to work too, but also very quiet. Providing an option 'model=w2jc' to modprobe however results in working(loud) front and mic. But this model does not seem to provide headphones output, so they don't work. This sounds to me like it may be easy to fix, so I hope you find this information useful. Would be great to have the sound working. Regards, Steffen (subscribed for the moment..) > The snd-hda-module loads with the following message: > | kernel: hda_codec: Unknown model for ALC882, trying auto-probe from BIOS... > | kernel: ALSA /usr/src/alsa/alsa-driver/pci/hda/hda_codec.c:2339: autoconfig: line_outs=1 (0x14/0x0/0x0/0x0/0x0) > | kernel: ALSA /usr/src/alsa/alsa-driver/pci/hda/hda_codec.c:2343: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) > | kernel: ALSA /usr/src/alsa/alsa-driver/pci/hda/hda_codec.c:2347: hp_outs=1 (0x15/0x0/0x0/0x0/0x0) > | kernel: ALSA /usr/src/alsa/alsa-driver/pci/hda/hda_codec.c:2355: inputs: mic=0x18, fmic=0x0, line=0x1a, fline=0x0, cd=0x0, aux=0x0 > > aplay -l says: > > | **** List of PLAYBACK Hardware Devices **** > | card 0: Intel [HDA Intel], device 0: ALC882 Analog [ALC882 Analog] > | Subdevices: 1/1 > | Subdevice #0: subdevice #0 > | card 0: Intel [HDA Intel], device 1: ALC882 Digital [ALC882 Digital] > | Subdevices: 1/1 > | Subdevice #0: subdevice #0 > > lspci -vv -nn says: > > | 00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio Controller [8086:284b] (rev 03) > | Subsystem: Apple Computer Inc. Unknown device [106b:00a0] > | Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- > | Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- > | Latency: 0, Cache Line Size: 256 bytes > | Interrupt: pin A routed to IRQ 20 > | Region 0: Memory at 9b500000 (64-bit, non-prefetchable) [size=16K] > | Capabilities: [50] Power Management version 2 > | Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+) > | Status: D0 PME-Enable- DSel=0 DScale=0 PME- > | Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- > | Address: 0000000000000000 Data: 0000 > | Capabilities: [70] Express Unknown type IRQ 0 > | Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag- > | Device: Latency L0s <64ns, L1 <1us > | Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported- > | Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ > | Device: MaxPayload 128 bytes, MaxReadReq 128 bytes > | Link: Supported Speed unknown, Width x0, ASPM unknown, Port 0 > | Link: Latency L0s <64ns, L1 <1us > | Link: ASPM Disabled CommClk- ExtSynch- > | Link: Speed unknown, Width x0 > | Capabilities: [100] Virtual Channel > | Capabilities: [130] Unknown (5)

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[alsa-devel] [HDA Intel/AD1984] Alsa 1.0.14 not working on ThinkPad T61
by joe+alsa＠nahmias.net 06 Jul '07

06 Jul '07

Hello, I'm having trouble getting sound on my ThinkPad T61 working. According to the changelog for alsa-driver 1.0.14, support was added in that version; however, no sound is coming out. I'm running Debian unstable and I'd be happy to test any patches, provide more info, etc... Any help would be appreciated. Thanks, --Joe PS - Here's some debugging info that may be of use: $ uname -srvmo Linux 2.6.21-2-686 #1 SMP Mon Jun 25 20:53:36 UTC 2007 i686 GNU/Linux $ dpkg -l alsa* | grep ^i ii alsa-base 1.0.14-1 ALSA driver configuration files ii alsa-modules-2.6.21-2-686 1.0.14-1+2.6.21-5 ALSA modules for kernel 2.6.21-2-686 ii alsa-source 1.0.14-1 ALSA driver sources ii alsa-utils 1.0.14-1 ALSA utilities $ aumix -q pcm 90, 90 mic 0, 0 pcm2 100, 100 igain 56, 56 $ lsmod | grep snd snd_hda_intel 244952 0 snd_pcm_oss 39680 0 snd_mixer_oss 15840 1 snd_pcm_oss snd_pcm 72292 2 snd_hda_intel,snd_pcm_oss snd_timer 20964 1 snd_pcm snd 49316 5 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer snd_page_alloc 9544 2 snd_hda_intel,snd_pcm soundcore 7424 1 snd $ sudo lspci -vv -s 00:1b.0 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) Subsystem: Lenovo Unknown device 20ac Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin B routed to IRQ 21 Region 0: Memory at fe020000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Address: 0000000000000000 Data: 0000 Capabilities: [70] Express Unknown type IRQ 0 Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag- Device: Latency L0s <64ns, L1 <1us Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported- Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ Device: MaxPayload 128 bytes, MaxReadReq 128 bytes Link: Supported Speed unknown, Width x0, ASPM unknown, Port 0 Link: Latency L0s <64ns, L1 <1us Link: ASPM Disabled CommClk- ExtSynch- Link: Speed unknown, Width x0 Capabilities: [100] Virtual Channel Capabilities: [130] Unknown (5) $ cat /proc/asound/card0/codec#0 Codec: Analog Devices AD1984 Address: 0 Vendor Id: 0x11d41984 Subsystem Id: 0x17aa20d7 Revision Id: 0x100400 Default PCM: rates [0x7ff]: 8000 11025 16000 22050 32000 44100 48000 88200 96000 176400 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Default Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Default Amp-Out caps: ofs=0x27, nsteps=0x27, stepsize=0x05, mute=0 Node 0x02 [Audio Output] wcaps 0x30311: Stereo Digital PCM: rates [0x7e0]: 44100 48000 88200 96000 176400 192000 bits [0xe]: 16 20 24 formats [0x5]: PCM AC3 Connection: 3 0x01* 0x08 0x09 Node 0x03 [Audio Output] wcaps 0x405: Stereo Amp-Out Amp-Out caps: ofs=0x27, nsteps=0x27, stepsize=0x05, mute=0 Amp-Out vals: [0x80 0x80] Power: 0x0 Node 0x04 [Audio Output] wcaps 0x405: Stereo Amp-Out Amp-Out caps: ofs=0x27, nsteps=0x27, stepsize=0x05, mute=0 Amp-Out vals: [0xa3 0xa3] Power: 0x0 Node 0x05 [Audio Input] wcaps 0x10050b: Stereo Amp-In Amp-In caps: ofs=0x27, nsteps=0x36, stepsize=0x05, mute=1 Amp-In vals: [0xa7 0xa7] Power: 0x0 Connection: 1 0x17 Node 0x06 [Audio Input] wcaps 0x10050b: Stereo Amp-In Amp-In caps: ofs=0x27, nsteps=0x36, stepsize=0x05, mute=1 Amp-In vals: [0xa7 0xa7] Power: 0x0 Connection: 1 0x18 Node 0x07 [Audio Mixer] wcaps 0x200103: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x00 0x00] Connection: 2 0x22 0x21 Node 0x08 [Audio Input] wcaps 0x100501: Stereo Power: 0x0 Connection: 1 0x0c Node 0x09 [Audio Input] wcaps 0x100501: Stereo Power: 0x0 Connection: 1 0x0d Node 0x0a [Audio Mixer] wcaps 0x200103: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x00 0x00] Connection: 2 0x04 0x21 Node 0x0b [Audio Mixer] wcaps 0x200103: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] Connection: 2 0x0f 0x21 Node 0x0c [Audio Selector] wcaps 0x30010d: Stereo Amp-Out Amp-Out caps: ofs=0x27, nsteps=0x36, stepsize=0x05, mute=1 Amp-Out vals: [0x1e 0x1e] Connection: 5 0x14* 0x15 0x16 0x20 0x25 Node 0x0d [Audio Selector] wcaps 0x30010d: Stereo Amp-Out Amp-Out caps: ofs=0x27, nsteps=0x36, stepsize=0x05, mute=1 Amp-Out vals: [0xa7 0xa7] Connection: 5 0x14* 0x15 0x16 0x20 0x25 Node 0x0e [Audio Selector] wcaps 0x300101: Stereo Connection: 2 0x03 0x04* Node 0x0f [Audio Selector] wcaps 0x300101: Stereo Connection: 2 0x03* 0x04 Node 0x10 [Beep Generator Widget] wcaps 0x70000c: Mono Amp-Out Amp-Out caps: ofs=0x0f, nsteps=0x0f, stepsize=0x0b, mute=1 Amp-Out vals: [0x00] Node 0x11 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x00 0x00] Pincap 0x081f: OUT HP Detect Pin Default 0x0221401f: [Jack] HP Out at Ext Front Conn = 1/8, Color = Green Pin-ctls: 0xc0: OUT HP Connection: 1 0x07 Node 0x12 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x00 0x00] Pincap 0x081001f: OUT HP EAPD Detect Pin Default 0x90170110: [Fixed] Speaker at Int N/A Conn = Analog, Color = Unknown Pin-ctls: 0xc0: OUT HP Power: 0x0 Connection: 1 0x0a Node 0x13 [Pin Complex] wcaps 0x40050c: Mono Amp-Out Amp-Out caps: ofs=0x1f, nsteps=0x1f, stepsize=0x05, mute=1 Amp-Out vals: [0x00] Pincap 0x0810010: OUT EAPD Pin Default 0x511301f0: [N/A] Speaker at Int Rear Conn = ATAPI, Color = Unknown Pin-ctls: 0x40: OUT Power: 0x0 Connection: 1 0x1f Node 0x14 [Pin Complex] wcaps 0x40008b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: Pincap 0x083727: IN Detect Pin Default 0x02a15021: [Jack] Mic at Ext Front Conn = 1/8, Color = Red Pin-ctls: 0x24: IN Node 0x15 [Pin Complex] wcaps 0x40008b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: Pincap 0x083727: IN Detect Pin Default 0x90a7012e: [Fixed] Mic at Int N/A Conn = Analog, Color = Unknown Pin-ctls: 0x24: IN Node 0x16 [Pin Complex] wcaps 0x40018d: Stereo Amp-Out Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x0837: IN OUT Detect Pin Default 0x593301f0: [N/A] CD at Int ATAPI Conn = ATAPI, Color = Unknown Pin-ctls: 0x00: Connection: 1 0x0b Node 0x17 [Pin Complex] wcaps 0x400001: Stereo Pincap 0x0820: IN Pin Default 0x55a601f0: [N/A] Mic at Int Top Conn = Digital, Color = Unknown Pin-ctls: 0x24: IN Node 0x18 [Pin Complex] wcaps 0x400001: Stereo Pincap 0x0820: IN Pin Default 0x55a601f0: [N/A] Mic at Int Top Conn = Digital, Color = Unknown Pin-ctls: 0x00: Node 0x19 [Power Widget] wcaps 0x500500: Mono Power: 0x0 Connection: 2 0x20* 0x21 Node 0x1a [Pin Complex] wcaps 0x400000: Mono Pincap 0x0820: IN Pin Default 0x91f311f0: [Fixed] Other at Int Rear Conn = ATAPI, Color = Black Pin-ctls: 0x20: IN Node 0x1b [Pin Complex] wcaps 0x40030d: Stereo Digital Amp-Out Amp-Out caps: ofs=0x27, nsteps=0x27, stepsize=0x05, mute=1 Amp-Out vals: [0x27 0x27] Pincap 0x0810: OUT Pin Default 0x214411a0: [Jack] SPDIF Out at Sep Rear Conn = RCA, Color = Black Pin-ctls: 0x40: OUT Connection: 1 0x02 Node 0x1c [Pin Complex] wcaps 0x40018d: Stereo Amp-Out Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x083737: IN OUT Detect Pin Default 0x21a15020: [Jack] Mic at Sep Rear Conn = 1/8, Color = Red Pin-ctls: 0x24: IN Connection: 1 0x24 Node 0x1d [Vendor Defined Widget] wcaps 0xf00100: Mono Connection: 25 0x07* 0x19 0x0a 0x0b 0x0c 0x0d 0x0e 0x0f 0x1a 0x1c 0x11 0x12 0x13 0x14 0x15 0x16 0x1e 0x1f 0x20 0x21 0x22 0x23 0x24 0x25 0x26 Node 0x1e [Audio Mixer] wcaps 0x200103: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x00 0x00] Connection: 2 0x0e 0x21 Node 0x1f [Audio Mixer] wcaps 0x200100: Mono Connection: 1 0x1e Node 0x20 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1 Amp-In vals: [0x80 0x80] [0x9c 0x9c] [0x80 0x80] [0x80 0x80] [0x80 0x80] Connection: 5 0x14 0x15 0x16 0x1a 0x25 Node 0x21 [Audio Selector] wcaps 0x30010d: Stereo Amp-Out Amp-Out caps: ofs=0x1f, nsteps=0x1f, stepsize=0x05, mute=1 Amp-Out vals: [0x1f 0x1f] Connection: 1 0x20 Node 0x22 [Audio Selector] wcaps 0x300101: Stereo Connection: 2 0x03 0x04* Node 0x23 [Audio Selector] wcaps 0x300101: Stereo Connection: 2 0x03* 0x04 Node 0x24 [Audio Mixer] wcaps 0x200103: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] Connection: 2 0x23 0x21 Node 0x25 [Audio Selector] wcaps 0x30010d: Stereo Amp-Out Amp-Out caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-Out vals: [0x00 0x00] Connection: 1 0x1c Node 0x26 [Vendor Defined Widget] wcaps 0xf00100: Mono Connection: 3 0x14* 0x15 0x1c

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Re: [alsa-devel] [Fixed-Mostly] ALC268
by Steven Zakulec 06 Jul '07

06 Jul '07

I've found another issue: I've lost some mixer options now. I've lost 1 capture source at least. I've attached the result of alsactl -f somefile store from before sound worked and after. --------------------------------------- Original E-mail From: Steven Zakulec [spzakulec(a)mail.widener.edu] Date: 07/06/2007 10:04 AM To: alsa-devel(a)alsa-project.org Subject: [alsa-devel] [Fixed-Mostly] ALC268 I was finally able to get sound working, thanks to the bugreport here: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3104 What I did was get the patch_realtek.c from the bugreport, put it in alsa-kernel/pci/hda, and then re-build the driver (plus I re-built the lib, but probably not necessary). I wasn't able to rmmod snd-hda-intel after the build finished, so I restarted the computer, and then it just worked. Unfortunately, the headphone jack is not working. The sound is only slightly, if at all, muted from the speakers when the headphones are plugged in. _______________________________________________ Alsa-devel mailing list Alsa-devel(a)alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

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[alsa-devel] [Fixed-Mostly] ALC268
by Steven Zakulec 06 Jul '07

06 Jul '07

I was finally able to get sound working, thanks to the bugreport here: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3104 What I did was get the patch_realtek.c from the bugreport, put it in alsa-kernel/pci/hda, and then re-build the driver (plus I re-built the lib, but probably not necessary). I wasn't able to rmmod snd-hda-intel after the build finished, so I restarted the computer, and then it just worked. Unfortunately, the headphone jack is not working. The sound is only slightly, if at all, muted from the speakers when the headphones are plugged in.

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[alsa-devel] PS3 - Surround sound on SPDIF set-up
by gt bradley 06 Jul '07

06 Jul '07

Crud :( I had asked them and they said that the hypervisor should allow for AC3 pass-through. In my inital review of the snd_ps3.c code, it looked like it was basically a data-pump, handling the DMA & interupts to move data from the passed in stream to the h/w (via the hypervisor). I also assumed that the iec bits (in headers in the SPDIF frames) were being set by higher levels in the software stack. If the bits are being set by the hardware and/or hypervisor then I'll have to fall back to plan "B". I've been programming for 20+ years, and have put kernel mods into production, but the last kernel hacking/device driver I did was in SYSV. I can forward changes/fixes to Geoff, for inclusion rolling things "upstream". I don't have direct access to inside information other than the source-code, but can forward the requests for more detailed info. let me know if I can help GT p.s. thanks for your time and patience. On 7/5/07, Takashi Iwai <tiwai(a)suse.de> wrote: > > At Wed, 04 Jul 2007 18:23:09 -0700, > GT Bradley wrote: > > > > right, > > For my Fedora install, these files are at /etc/alsa/cards, (although > > the iec958.conf) is in /etc/alsa/pcm). > > > > The iec958.conf seems resonable, although I don't fully understand the > > syntax of the file, nor understand how the asoundrc file wires to > > /etc/alsa/... to the actual linux driver. It seems to pass through to > > > the default device (which is what I want) > > > > using the system-config-soundcard utility, I do get surround sound, and > > is displays the card as PS3 whcih matches the output of aplay -l I've > > > tryed createing a /etc/alsa/cards/PS3.conf file as follows: > > It seems that the current PS3 driver doesn't support the passthru > properly yet. For AC3, you'd have to set up the IEC958 status bits, > but the driver doesn't support it. Some receivers are robust that > work even without non-audio bit, but many receivers require the proper > status bits. I'll contact with SCE guys for fixing this issue. > > > Takashi >

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[alsa-devel] linked streams question
by Eliot Blennerhassett 06 Jul '07

06 Jul '07

Greetings, I'm adding linked stream support to my driver (asihpi), and having some trouble with the end of playback. What happens is that the slave streams never transition to SETUP state at the end of playback. (Eg playing 4 channel wav file to 2 linked stereo streams with aplay). The master stream reaches snd_pcm_drain_done() which then causes trigger(stop), resulting in all linked streams being stopped. But only the master state is set to SETUP However, now the slave streams are stopped, period_elapsed() is not called for a final time to (I assme) cause them to transition to the SETUP state. Eventually I get "playback drain error (DMA or IRQ trouble?)\n" My workaround is to set the state of each substream to SETUP in the trigger-stop operator, but no other driver needs to do this so I think it is probably the wrong solution - maybe misses some other cleanup code? Any suggestions on the proper way to handle this? regards Eliot

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[alsa-devel] [Fwd: Re: default setting not fully working with new ALSA device]
by Tobin Davis 05 Jul '07

05 Jul '07

-------- Forwarded Message -------- From: Peter Matthias <PeterMatthias(a)web.de> To: Tobin Davis <tdavis(a)dsl-only.net> Subject: Re: [alsa-devel] default setting not fully working with new ALSA device Date: Thu, 5 Jul 2007 18:34:08 +0200 The Board is a MSI K9AGM2-FIH, Sockel AM2, ATI RS690G, mATX, PCIe The script gave following output: "Your ALSA information is located at http://pastebin.ca/604529" Other drivers are statically linked in my kernel. Thank you for your work! In case of any questions, contact me. Peter Am Mittwoch, 4. Juli 2007 schrieben Sie: > Could you post the output from > http://bulletproof.servebeer.com/alsa/scripts/alsa-info.sh ? This > script will give us more detailed information on what sound chip it is. > We will also need to know the brand of board, for the driver file. > > Thanks, > > Tobin > > On Wed, 2007-07-04 at 16:48 +0200, Peter Matthias wrote: > > Hello, > > > > I have got a 690G board with following lspic -nv output: > > > > 01:05.2 0403: 1002:7919 > > Subsystem: 1002:7919 > > Flags: bus master, fast devsel, latency 64, IRQ 19 > > Memory at fe9e8000 (64-bit, non-prefetchable) [size=16K] > > Capabilities: [50] Power Management version 2 > > Capabilities: [60] Message Signalled Interrupts: 64bit+ Queue=0/0 > > Enable- > > > > With the default setting, microphone does not work. With module > > parameter "modprobe -i snd-hda-intel model=6stack-dig" microphone works > > well. Please add to default setting. It was written in Linux Kernel > > documentation to report this issue here. > > > > Thank you, > > Peter > > _______________________________________________ > > Alsa-devel mailing list > > Alsa-devel(a)alsa-project.org > > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel -- Tobin Davis <tdavis(a)dsl-only.net>

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[PATCH 1/1] ALSA sound driver for the AT73C213 DAC using Atmel SSC driver
by Hans-Christian Egtvedt 05 Jul '07

05 Jul '07

This patch adds support for the AT73C213 DAC using the misc Atmel SSC driver in I2S mode. The driver also requires a SPI to setup the registers and control volume. It has been tested with an AT32AP7000 on the ATSTK1000 development board. The driver should also work with any Atmel device with an SSC module supported by the Atmel SSC driver (atmel-ssc). The atmel-ssc driver is just submitted to the Linux kernel. Please see mail thread http://lkml.org/lkml/2007/7/16/32 Signed-off-by: Hans-Christian Egtvedt <hcegtvedt(a)atmel.com> --- include/linux/spi/at73c213.h | 25 + sound/spi/Kconfig | 25 + sound/spi/Makefile | 3 + sound/spi/at73c213.c | 1121 ++++++++++++++++++++++++++++++++++++++++++ sound/spi/at73c213.h | 119 +++++ 5 files changed, 1293 insertions(+), 0 deletions(-) create mode 100644 include/linux/spi/at73c213.h create mode 100644 sound/spi/at73c213.c create mode 100644 sound/spi/at73c213.h diff --git a/include/linux/spi/at73c213.h b/include/linux/spi/at73c213.h new file mode 100644 index 0000000..0f20a70 --- /dev/null +++ b/include/linux/spi/at73c213.h @@ -0,0 +1,25 @@ +/* + * Board-specific data used to set up AT73c213 audio DAC driver. + */ + +#ifndef __LINUX_SPI_AT73C213_H +#define __LINUX_SPI_AT73C213_H + +/** + * at73c213_board_info - how the external DAC is wired to the device. + * + * @ssc_id: SSC platform_driver id the DAC shall use to stream the audio. + * @dac_clk: the external clock used to provide master clock to the DAC. + * @shortname: a short discription for the DAC, seen by userspace tools. + * + * This struct contains the configuration of the hardware connection to the + * external DAC. The DAC needs a master clock and a I2S audio stream. It also + * provides a name which is used to identify it in userspace tools. + */ +struct at73c213_board_info { + int ssc_id; + struct clk *dac_clk; + char shortname[32]; +}; + +#endif /* __LINUX_SPI_AT73C213_H */ diff --git a/sound/spi/Kconfig b/sound/spi/Kconfig index 60fbb2a..0d08c29 100644 --- a/sound/spi/Kconfig +++ b/sound/spi/Kconfig @@ -3,4 +3,29 @@ menu "SPI devices" depends on SND != n +config SND_AT73C213 + tristate "Atmel AT73C213 DAC driver" + depends on ATMEL_SSC + select SND_PCM + help + Say Y here if you want to use the Atmel AT73C213 external DAC. This + DAC can be found on Atmel development boards. + + This driver requires the Atmel SSC driver for sound sink, a + peripheral found on most AT91 and AVR32 microprocessors. + + To compile this driver as a module, choose M here: the module will be + called snd-at73c213. + +config SND_AT73C213_TARGET_BITRATE + int "Target bitrate for AT73C213" + depends on SND_AT73C213 + default "48000" + range 8000 50000 + help + Sets the target bitrate for the bitrate calculator in the driver. + Limited by hardware to be between 8000 Hz and 50000 Hz. + + Set to 48000 Hz by default. + endmenu diff --git a/sound/spi/Makefile b/sound/spi/Makefile index 30d8ec9..026fb73 100644 --- a/sound/spi/Makefile +++ b/sound/spi/Makefile @@ -1,2 +1,5 @@ # Makefile for SPI drivers +snd-at73c213-objs := at73c213.o + +obj-$(CONFIG_SND_AT73C213) += snd-at73c213.o diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c new file mode 100644 index 0000000..a466929 --- /dev/null +++ b/sound/spi/at73c213.c @@ -0,0 +1,1121 @@ +/* + * Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC + * + * Copyright (C) 2006-2007 Atmel Norway + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +/*#define DEBUG*/ + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/io.h> + +#include <sound/driver.h> +#include <sound/initval.h> +#include <sound/control.h> +#include <sound/core.h> +#include <sound/pcm.h> + +#include <linux/atmel-ssc.h> + +#include <linux/spi/spi.h> +#include <linux/spi/at73c213.h> + +#include "at73c213.h" + +#define BITRATE_MIN 8000 /* Hardware limit? */ +#define BITRATE_TARGET CONFIG_SND_AT73C213_TARGET_BITRATE +#define BITRATE_MAX 50000 /* Hardware limit. */ + +/* Initial (hardware reset) AT73C213 register values. */ +static u8 snd_at73c213_original_image[18] = +{ + 0x00, /* 00 - CTRL */ + 0x05, /* 01 - LLIG */ + 0x05, /* 02 - RLIG */ + 0x08, /* 03 - LPMG */ + 0x08, /* 04 - RPMG */ + 0x00, /* 05 - LLOG */ + 0x00, /* 06 - RLOG */ + 0x22, /* 07 - OLC */ + 0x09, /* 08 - MC */ + 0x00, /* 09 - CSFC */ + 0x00, /* 0A - MISC */ + 0x00, /* 0B - */ + 0x00, /* 0C - PRECH */ + 0x05, /* 0D - AUXG */ + 0x00, /* 0E - */ + 0x00, /* 0F - */ + 0x00, /* 10 - RST */ + 0x00, /* 11 - PA_CTRL */ +}; + +struct snd_at73c213 { + struct snd_card *card; + struct snd_pcm *pcm; + struct snd_pcm_substream *substream; + struct at73c213_board_info *board; + int irq; + int period; + unsigned long bitrate; + struct clk *bitclk; + struct ssc_device *ssc; + struct spi_device *spi; + u8 spi_wbuffer[2]; + u8 spi_rbuffer[2]; + /* Image of the SPI registers in AT73C213. */ + u8 reg_image[18]; + /* Protect registers against concurrent access. */ + spinlock_t lock; +}; + +#define get_chip(card) ((struct snd_at73c213 *)card->private_data) + +static int +snd_at73c213_write_reg(struct snd_at73c213 *chip, u8 reg, u8 val) +{ + struct spi_message msg; + struct spi_transfer msg_xfer = { + .len = 2, + .cs_change = 0, + }; + int retval; + + spi_message_init(&msg); + + chip->spi_wbuffer[0] = reg; + chip->spi_wbuffer[1] = val; + + msg_xfer.tx_buf = chip->spi_wbuffer; + msg_xfer.rx_buf = chip->spi_rbuffer; + spi_message_add_tail(&msg_xfer, &msg); + + retval = spi_sync(chip->spi, &msg); + + if (!retval) + chip->reg_image[reg] = val; + + return retval; +} + +static struct snd_pcm_hardware snd_at73c213_playback_hw = { + .info = SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER, + .formats = SNDRV_PCM_FMTBIT_S16_BE, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = 8000, /* Replaced by chip->bitrate later. */ + .rate_max = 50000, /* Replaced by chip->bitrate later. */ + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = 64 * 1024 - 1, + .period_bytes_min = 512, + .period_bytes_max = 64 * 1024 - 1, + .periods_min = 4, + .periods_max = 1024, +}; + +/* + * Calculate and set bitrate and divisions. + */ +static int snd_at73c213_set_bitrate(struct snd_at73c213 *chip) +{ + unsigned long ssc_rate = clk_get_rate(chip->ssc->clk); + unsigned long dac_rate_new, ssc_div, status; + unsigned long ssc_div_max, ssc_div_min; + int max_tries; + + /* + * We connect two clocks here, picking divisors so the I2S clocks + * out data at the same rate the DAC clocks it in ... and as close + * as practical to the desired target rate. + * + * The DAC master clock (MCLK) is programmable, and is either 256 + * or (not here) 384 times the I2S output clock (BCLK). + */ + + /* SSC clock / (bitrate * stereo * 16-bit). */ + ssc_div = ssc_rate / (BITRATE_TARGET * 2 * 16); + ssc_div_min = ssc_rate / (BITRATE_MAX * 2 * 16); + ssc_div_max = ssc_rate / (BITRATE_MIN * 2 * 16); + max_tries = (ssc_div_max - ssc_div_min) / 2; + + if (max_tries < 1) + max_tries = 1; + + /* ssc_div must be a power of 2. */ + ssc_div = (ssc_div + 1) & ~1UL; + + if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN) { + ssc_div -= 2; + if ((ssc_rate / (ssc_div * 2 * 16)) > BITRATE_MAX) + return -ENXIO; + } + + /* Search for a possible bitrate. */ + do { + /* SSC clock / (ssc divider * 16-bit * stereo). */ + if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN) + return -ENXIO; + + /* 256 / (2 * 16) = 8 */ + dac_rate_new = 8 * (ssc_rate / ssc_div); + + status = clk_round_rate(chip->board->dac_clk, dac_rate_new); + if (status < 0) + return status; + + /* Ignore difference smaller than 256 Hz. */ + if ((status/256) == (dac_rate_new/256)) + goto set_rate; + + ssc_div += 2; + } while (--max_tries); + + /* Not able to find a valid bitrate. */ + return -ENXIO; + +set_rate: + status = clk_set_rate(chip->board->dac_clk, status); + if (status < 0) + return status; + + /* Set divider in SSC device. */ + ssc_writel(chip->ssc->regs, CMR, ssc_div/2); + + /* SSC clock / (ssc divider * 16-bit * stereo). */ + chip->bitrate = ssc_rate / (ssc_div * 16 * 2); + + dev_info(&chip->spi->dev, + "at73c213: supported bitrate is %lu (%lu divider)\n", + chip->bitrate, ssc_div); + + return 0; +} + +static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + snd_at73c213_playback_hw.rate_min = chip->bitrate; + snd_at73c213_playback_hw.rate_max = chip->bitrate; + runtime->hw = snd_at73c213_playback_hw; + chip->substream = substream; + + return 0; +} + +static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + chip->substream = NULL; + return 0; +} + +static int snd_at73c213_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + return snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); +} + +static int snd_at73c213_pcm_hw_free(struct snd_pcm_substream *substream) +{ + return snd_pcm_lib_free_pages(substream); +} + +static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + int block_size; + + block_size = frames_to_bytes(runtime, runtime->period_size); + + chip->period = 0; + + ssc_writel(chip->ssc->regs, PDC_TPR, + (long)runtime->dma_addr); + ssc_writel(chip->ssc->regs, PDC_TCR, runtime->period_size * 2); + ssc_writel(chip->ssc->regs, PDC_TNPR, + (long)runtime->dma_addr + block_size); + ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2); + + return 0; +} + +static int snd_at73c213_pcm_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + int retval = 0; + + spin_lock(&chip->lock); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + ssc_writel(chip->ssc->regs, IER, SSC_BIT(IER_ENDTX)); + ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTEN)); + break; + case SNDRV_PCM_TRIGGER_STOP: + ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTDIS)); + ssc_writel(chip->ssc->regs, IDR, SSC_BIT(IDR_ENDTX)); + break; + default: + dev_dbg(&chip->spi->dev, "spurious command %x\n", cmd); + retval = -EINVAL; + break; + } + + spin_unlock(&chip->lock); + + return retval; +} + +static snd_pcm_uframes_t +snd_at73c213_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_uframes_t pos; + unsigned long bytes; + + bytes = ssc_readl(chip->ssc->regs, PDC_TPR) + - (unsigned long)runtime->dma_addr; + + pos = bytes_to_frames(runtime, bytes); + if (pos >= runtime->buffer_size) + pos -= runtime->buffer_size; + + return pos; +} + +static struct snd_pcm_ops at73c213_playback_ops = { + .open = snd_at73c213_pcm_open, + .close = snd_at73c213_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_at73c213_pcm_hw_params, + .hw_free = snd_at73c213_pcm_hw_free, + .prepare = snd_at73c213_pcm_prepare, + .trigger = snd_at73c213_pcm_trigger, + .pointer = snd_at73c213_pcm_pointer, +}; + +static void snd_at73c213_pcm_free(struct snd_pcm *pcm) +{ + struct snd_at73c213 *chip = snd_pcm_chip(pcm); + if (chip->pcm) { + snd_pcm_lib_preallocate_free_for_all(chip->pcm); + chip->pcm = NULL; + } +} + +static int __devinit snd_at73c213_pcm_new(struct snd_at73c213 *chip, int device) +{ + struct snd_pcm *pcm; + int retval; + + retval = snd_pcm_new(chip->card, chip->card->shortname, + device, 1, 0, &pcm); + if (retval < 0) + goto out; + + pcm->private_data = chip; + pcm->private_free = snd_at73c213_pcm_free; + pcm->info_flags = SNDRV_PCM_INFO_BLOCK_TRANSFER; + strcpy(pcm->name, "at73c213"); + chip->pcm = pcm; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &at73c213_playback_ops); + + retval = snd_pcm_lib_preallocate_pages_for_all(chip->pcm, + SNDRV_DMA_TYPE_DEV, &chip->spi->dev, + 64 * 1024, 64 * 1024); +out: + return retval; +} + +static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id) +{ + struct snd_at73c213 *chip = dev_id; + struct snd_pcm_runtime *runtime = chip->substream->runtime; + u32 status; + int offset; + int block_size; + int next_period; + int retval = IRQ_NONE; + + spin_lock(&chip->lock); + + block_size = frames_to_bytes(runtime, runtime->period_size); + status = ssc_readl(chip->ssc->regs, IMR); + + if (status & SSC_BIT(IMR_ENDTX)) { + chip->period++; + if (chip->period == runtime->periods) + chip->period = 0; + next_period = chip->period + 1; + if (next_period == runtime->periods) + next_period = 0; + + offset = block_size * next_period; + + ssc_writel(chip->ssc->regs, PDC_TNPR, + (long)runtime->dma_addr + offset); + ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2); + retval = IRQ_HANDLED; + } + + ssc_readl(chip->ssc->regs, IMR); + spin_unlock(&chip->lock); + + if (status & SSC_BIT(IMR_ENDTX)) + snd_pcm_period_elapsed(chip->substream); + + return retval; +} + +/* + * Mixer functions. + */ +static int snd_at73c213_mono_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 8) & 0xff; + int mask = (kcontrol->private_value >> 16) & 0xff; + int invert = (kcontrol->private_value >> 24) & 0xff; + + spin_lock_irq(&chip->lock); + + ucontrol->value.integer.value[0] = (chip->reg_image[reg] >> shift) & mask; + + if (invert) + ucontrol->value.integer.value[0] = + (mask - ucontrol->value.integer.value[0]); + + spin_unlock_irq(&chip->lock); + + return 0; +} + +static int snd_at73c213_mono_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 8) & 0xff; + int mask = (kcontrol->private_value >> 16) & 0xff; + int invert = (kcontrol->private_value >> 24) & 0xff; + int change, retval; + unsigned short val; + + val = (ucontrol->value.integer.value[0] & mask); + if (invert) + val = mask - val; + val <<= shift; + + spin_lock_irq(&chip->lock); + + val = (chip->reg_image[reg] & ~(mask << shift)) | val; + change = val != chip->reg_image[reg]; + retval = snd_at73c213_write_reg(chip, reg, val); + + spin_unlock_irq(&chip->lock); + + if (retval) + return retval; + + return change; +} + +static int snd_at73c213_stereo_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + int mask = (kcontrol->private_value >> 24) & 0xff; + + if (mask == 1) + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + else + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + + uinfo->count = 2; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = mask; + + return 0; +} + +static int snd_at73c213_stereo_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int left_reg = kcontrol->private_value & 0xff; + int right_reg = (kcontrol->private_value >> 8) & 0xff; + int shift_left = (kcontrol->private_value >> 16) & 0x07; + int shift_right = (kcontrol->private_value >> 19) & 0x07; + int mask = (kcontrol->private_value >> 24) & 0xff; + int invert = (kcontrol->private_value >> 22) & 1; + + spin_lock_irq(&chip->lock); + + ucontrol->value.integer.value[0] = + (chip->reg_image[left_reg] >> shift_left) & mask; + ucontrol->value.integer.value[1] = + (chip->reg_image[right_reg] >> shift_right) & mask; + + if (invert) { + ucontrol->value.integer.value[0] = + (mask - ucontrol->value.integer.value[0]); + ucontrol->value.integer.value[1] = + (mask - ucontrol->value.integer.value[1]); + } + + spin_unlock_irq(&chip->lock); + + return 0; +} + +static int snd_at73c213_stereo_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int left_reg = kcontrol->private_value & 0xff; + int right_reg = (kcontrol->private_value >> 8) & 0xff; + int shift_left = (kcontrol->private_value >> 16) & 0x07; + int shift_right = (kcontrol->private_value >> 19) & 0x07; + int mask = (kcontrol->private_value >> 24) & 0xff; + int invert = (kcontrol->private_value >> 22) & 1; + int change, retval; + unsigned short val1, val2; + + val1 = ucontrol->value.integer.value[0] & mask; + val2 = ucontrol->value.integer.value[1] & mask; + if (invert) { + val1 = mask - val1; + val2 = mask - val2; + } + val1 <<= shift_left; + val2 <<= shift_right; + + spin_lock_irq(&chip->lock); + + val1 = (chip->reg_image[left_reg] & ~(mask << shift_left)) | val1; + val2 = (chip->reg_image[right_reg] & ~(mask << shift_right)) | val2; + change = val1 != chip->reg_image[left_reg] + || val2 != chip->reg_image[right_reg]; + retval = snd_at73c213_write_reg(chip, left_reg, val1); + if (retval) { + spin_unlock_irq(&chip->lock); + goto out; + } + retval = snd_at73c213_write_reg(chip, right_reg, val2); + if (retval) { + spin_unlock_irq(&chip->lock); + goto out; + } + + spin_unlock_irq(&chip->lock); + + return change; + +out: + return retval; +} + +static int snd_at73c213_mono_switch_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 snd_at73c213_mono_switch_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 8) & 0xff; + int invert = (kcontrol->private_value >> 24) & 0xff; + + spin_lock_irq(&chip->lock); + + ucontrol->value.integer.value[0] = (chip->reg_image[reg] >> shift) & 0x01; + + if (invert) + ucontrol->value.integer.value[0] = + (0x01 - ucontrol->value.integer.value[0]); + + spin_unlock_irq(&chip->lock); + + return 0; +} + +static int snd_at73c213_mono_switch_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 8) & 0xff; + int mask = (kcontrol->private_value >> 16) & 0xff; + int invert = (kcontrol->private_value >> 24) & 0xff; + int change, retval; + unsigned short val; + + if (ucontrol->value.integer.value[0]) + val = mask; + else + val = 0; + + if (invert) + val = mask - val; + val <<= shift; + + spin_lock_irq(&chip->lock); + + val |= (chip->reg_image[reg] & ~(mask << shift)); + change = val != chip->reg_image[reg]; + + retval = snd_at73c213_write_reg(chip, reg, val); + + spin_unlock_irq(&chip->lock); + + if (retval) + return retval; + + return change; +} + +static int snd_at73c213_pa_volume_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = ((kcontrol->private_value >> 16) & 0xff) - 1; + + return 0; +} + +static int snd_at73c213_line_capture_volume_info( + struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 2; + /* When inverted will give values 0x10001 => 0. */ + uinfo->value.integer.min = 14; + uinfo->value.integer.max = 31; + + return 0; +} + +static int snd_at73c213_aux_capture_volume_info( + struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + /* When inverted will give values 0x10001 => 0. */ + uinfo->value.integer.min = 14; + uinfo->value.integer.max = 31; + + return 0; +} + +#define AT73C213_MONO_SWITCH(xname, xindex, reg, shift, mask, invert) \ +{ \ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = xname, \ + .index = xindex, \ + .info = snd_at73c213_mono_switch_info, \ + .get = snd_at73c213_mono_switch_get, \ + .put = snd_at73c213_mono_switch_put, \ + .private_value = (reg | (shift << 8) | (mask << 16) | (invert << 24)) \ +} + +#define AT73C213_STEREO(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \ +{ \ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = xname, \ + .index = xindex, \ + .info = snd_at73c213_stereo_info, \ + .get = snd_at73c213_stereo_get, \ + .put = snd_at73c213_stereo_put, \ + .private_value = (left_reg | (right_reg << 8) \ + | (shift_left << 16) | (shift_right << 19) \ + | (mask << 24) | (invert << 22)) \ +} + +static struct snd_kcontrol_new snd_at73c213_controls[] __devinitdata = { +AT73C213_STEREO("Master Playback Volume", 0, DAC_LMPG, DAC_RMPG, 0, 0, 0x1f, 1), +AT73C213_STEREO("Master Playback Switch", 0, DAC_LMPG, DAC_RMPG, 5, 5, 1, 1), +AT73C213_STEREO("PCM Playback Volume", 0, DAC_LLOG, DAC_RLOG, 0, 0, 0x1f, 1), +AT73C213_STEREO("PCM Playback Switch", 0, DAC_LLOG, DAC_RLOG, 5, 5, 1, 1), +AT73C213_MONO_SWITCH("Mono PA Playback Switch", 0, DAC_CTRL, DAC_CTRL_ONPADRV, 0x01, 0), +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "PA Playback Volume", + .index = 0, + .info = snd_at73c213_pa_volume_info, + .get = snd_at73c213_mono_get, + .put = snd_at73c213_mono_put, + .private_value = PA_CTRL | (PA_CTRL_APAGAIN << 8) | (0x0f << 16) | (1 << 24), +}, +AT73C213_MONO_SWITCH("PA High Gain Playback Switch", 0, PA_CTRL, PA_CTRL_APALP, 0x01, 1), +AT73C213_MONO_SWITCH("PA Playback Switch", 0, PA_CTRL, PA_CTRL_APAON, 0x01, 0), +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Aux Capture Volume", + .index = 0, + .info = snd_at73c213_aux_capture_volume_info, + .get = snd_at73c213_mono_get, + .put = snd_at73c213_mono_put, + .private_value = DAC_AUXG | (0 << 8) | (0x1f << 16) | (1 << 24), +}, +AT73C213_MONO_SWITCH("Aux Capture Switch", 0, DAC_CTRL, DAC_CTRL_ONAUXIN, 0x01, 0), +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Line Capture Volume", + .index = 0, + .info = snd_at73c213_line_capture_volume_info, + .get = snd_at73c213_stereo_get, + .put = snd_at73c213_stereo_put, + .private_value = DAC_LLIG | (DAC_RLIG << 8) | (0 << 16) | (0 << 19) + | (0x1f << 24) | (1 << 22), +}, +AT73C213_MONO_SWITCH("Line Capture Switch", 0, DAC_CTRL, 0, 0x03, 0), +}; + +static int __devinit snd_at73c213_mixer(struct snd_at73c213 *chip) +{ + struct snd_card *card; + int errval, idx; + + if (chip == NULL || chip->pcm == NULL) + return -EINVAL; + + card = chip->card; + + strcpy(card->mixername, chip->pcm->name); + + for (idx = 0; idx < ARRAY_SIZE(snd_at73c213_controls); idx++) { + errval = snd_ctl_add(card, + snd_ctl_new1(&snd_at73c213_controls[idx], + chip)); + if (errval < 0) + goto cleanup; + } + + return 0; + +cleanup: + for (idx = 1; idx < ARRAY_SIZE(snd_at73c213_controls) + 1; idx++) { + struct snd_kcontrol *kctl; + kctl = snd_ctl_find_numid(card, idx); + if (kctl) + snd_ctl_remove(card, kctl); + } + return errval; +} + +/* + * Device functions + */ +static int snd_at73c213_ssc_init(struct snd_at73c213 *chip) +{ + /* + * Continuous clock output. + * Starts on falling TF. + * Delay 1 cycle (1 bit). + * Periode is 16 bit (16 - 1). + */ + ssc_writel(chip->ssc->regs, TCMR, + SSC_BF(TCMR_CKO, 1) + | SSC_BF(TCMR_START, 4) + | SSC_BF(TCMR_STTDLY, 1) + | SSC_BF(TCMR_PERIOD, 16 - 1)); + /* + * Data length is 16 bit (16 - 1). + * Transmit MSB first. + * Transmit 2 words each transfer. + * Frame sync length is 16 bit (16 - 1). + * Frame starts on negative pulse. + */ + ssc_writel(chip->ssc->regs, TFMR, + SSC_BF(TFMR_DATLEN, 16 - 1) + | SSC_BIT(TFMR_MSBF) + | SSC_BF(TFMR_DATNB, 1) + | SSC_BF(TFMR_FSLEN, 16 - 1) + | SSC_BF(TFMR_FSOS, 1)); + + return 0; +} + +static int snd_at73c213_chip_init(struct snd_at73c213 *chip) +{ + int retval; + unsigned char dac_ctrl = 0; + + retval = snd_at73c213_set_bitrate(chip); + if (retval) + goto out; + + /* Enable DAC master clock. */ + clk_enable(chip->board->dac_clk); + + /* Initialize at73c213 on SPI bus. */ + retval = snd_at73c213_write_reg(chip, DAC_RST, 0x04); + if (retval) + goto out_clk; + msleep(1); + retval = snd_at73c213_write_reg(chip, DAC_RST, 0x03); + if (retval) + goto out_clk; + + /* Precharge everything. */ + retval = snd_at73c213_write_reg(chip, DAC_PRECH, 0xff); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, PA_CTRL, (1<<PA_CTRL_APAPRECH)); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_CTRL, + (1<<DAC_CTRL_ONLNOL) | (1<<DAC_CTRL_ONLNOR)); + if (retval) + goto out_clk; + + msleep(50); + + /* Stop precharging PA. */ + retval = snd_at73c213_write_reg(chip, PA_CTRL, + (1<<PA_CTRL_APALP) | 0x0f); + if (retval) + goto out_clk; + + msleep(450); + + /* Stop precharging DAC, turn on master power. */ + retval = snd_at73c213_write_reg(chip, DAC_PRECH, (1<<DAC_PRECH_ONMSTR)); + if (retval) + goto out_clk; + + msleep(1); + + /* Turn on DAC. */ + dac_ctrl = (1<<DAC_CTRL_ONDACL) | (1<<DAC_CTRL_ONDACR) + | (1<<DAC_CTRL_ONLNOL) | (1<<DAC_CTRL_ONLNOR); + + retval = snd_at73c213_write_reg(chip, DAC_CTRL, dac_ctrl); + if (retval) + goto out_clk; + + /* Mute sound. */ + retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_RMPG, 0x3f); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_LLOG, 0x3f); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_RLOG, 0x3f); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_LLIG, 0x11); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_RLIG, 0x11); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_AUXG, 0x11); + if (retval) + goto out_clk; + + /* Enable I2S device, i.e. clock output. */ + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN)); + + goto out; + +out_clk: + clk_disable(chip->board->dac_clk); +out: + return retval; +} + +static int snd_at73c213_dev_free(struct snd_device *device) +{ + struct snd_at73c213 *chip = device->device_data; + + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + if (chip->irq >= 0) { + free_irq(chip->irq, chip); + chip->irq = -1; + } + + return 0; +} + +static int __devinit snd_at73c213_dev_init(struct snd_card *card, + struct spi_device *spi) +{ + static struct snd_device_ops ops = { + .dev_free = snd_at73c213_dev_free, + }; + struct snd_at73c213 *chip = get_chip(card); + int irq, retval; + + irq = chip->ssc->irq; + if (irq < 0) + return irq; + + spin_lock_init(&chip->lock); + chip->card = card; + chip->irq = -1; + + retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip); + if (retval) { + dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq); + goto out; + } + chip->irq = irq; + + memcpy(&chip->reg_image, &snd_at73c213_original_image, + sizeof(snd_at73c213_original_image)); + + retval = snd_at73c213_ssc_init(chip); + if (retval) + goto out_irq; + + retval = snd_at73c213_chip_init(chip); + if (retval) + goto out_irq; + + retval = snd_at73c213_pcm_new(chip, 0); + if (retval) + goto out_irq; + + retval = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); + if (retval) + goto out_irq; + + retval = snd_at73c213_mixer(chip); + if (retval) + goto out_snd_dev; + + snd_card_set_dev(card, &spi->dev); + + goto out; + +out_snd_dev: + snd_device_free(card, chip); +out_irq: + free_irq(chip->irq, chip); + chip->irq = -1; +out: + return retval; +} + +static int snd_at73c213_probe(struct spi_device *spi) +{ + struct snd_card *card; + struct snd_at73c213 *chip; + struct at73c213_board_info *board; + int retval; + char id[16]; + + board = spi->dev.platform_data; + if (!board) { + dev_dbg(&spi->dev, "no platform_data\n"); + return -ENXIO; + } + + if (!board->dac_clk) { + dev_dbg(&spi->dev, "no DAC clk\n"); + return -ENXIO; + } + + if (IS_ERR(board->dac_clk)) { + dev_dbg(&spi->dev, "no DAC clk\n"); + return PTR_ERR(board->dac_clk); + } + + retval = -ENOMEM; + + /* Allocate "card" using some unused identifiers. */ + snprintf(id, sizeof id, "at73c213_%d", board->ssc_id); + card = snd_card_new(-1, id, THIS_MODULE, sizeof(struct snd_at73c213)); + if (!card) + goto out; + + chip = card->private_data; + chip->spi = spi; + chip->board = board; + + chip->ssc = ssc_request(board->ssc_id); + if (IS_ERR(chip->ssc)) { + dev_dbg(&spi->dev, "could not get ssc%d device\n", + board->ssc_id); + retval = PTR_ERR(chip->ssc); + goto out_card; + } + + retval = snd_at73c213_dev_init(card, spi); + if (retval) + goto out_ssc; + + strcpy(card->driver, "at73c213"); + strcpy(card->shortname, board->shortname); + sprintf(card->longname, "%s on irq %d", card->shortname, chip->irq); + + retval = snd_card_register(card); + if (retval) + goto out_ssc; + + dev_set_drvdata(&spi->dev, card); + + goto out; + +out_ssc: + ssc_free(chip->ssc); +out_card: + snd_card_free(card); +out: + return retval; +} + +static int __devexit snd_at73c213_remove(struct spi_device *spi) +{ + struct snd_card *card = dev_get_drvdata(&spi->dev); + struct snd_at73c213 *chip = card->private_data; + int retval; + + /* Stop playback. */ + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + + /* Mute sound. */ + retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_RMPG, 0x3f); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_LLOG, 0x3f); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_RLOG, 0x3f); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_LLIG, 0x11); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_RLIG, 0x11); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_AUXG, 0x11); + if (retval) + goto out; + + /* Turn off PA. */ + retval = snd_at73c213_write_reg(chip, PA_CTRL, (chip->reg_image[PA_CTRL]|0x0f)); + if (retval) + goto out; + msleep(10); + retval = snd_at73c213_write_reg(chip, PA_CTRL, (1<<PA_CTRL_APALP)|0x0f); + if (retval) + goto out; + + /* Turn off external DAC. */ + retval = snd_at73c213_write_reg(chip, DAC_CTRL, 0x0c); + if (retval) + goto out; + msleep(2); + retval = snd_at73c213_write_reg(chip, DAC_CTRL, 0x00); + if (retval) + goto out; + + /* Turn off master power. */ + retval = snd_at73c213_write_reg(chip, DAC_PRECH, 0x00); + if (retval) + goto out; + +out: + /* Stop DAC master clock. */ + clk_disable(chip->board->dac_clk); + + ssc_free(chip->ssc); + snd_card_free(card); + dev_set_drvdata(&spi->dev, NULL); + + return 0; +} + +#ifdef CONFIG_PM +static int snd_at73c213_suspend(struct spi_device *spi, pm_message_t msg) +{ + struct snd_card *card = dev_get_drvdata(&spi->dev); + struct snd_at73c213 *chip = card->private_data; + + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + clk_disable(chip->board->dac_clk); + + return 0; +} + +static int snd_at73c213_resume(struct spi_device *spi) +{ + struct snd_card *card = dev_get_drvdata(&spi->dev); + struct snd_at73c213 *chip = card->private_data; + + clk_enable(chip->board->dac_clk); + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN)); + + return 0; +} +#else +#define snd_at73c213_suspend NULL +#define snd_at73c213_resume NULL +#endif + +static struct spi_driver at73c213_driver = { + .driver = { + .name = "at73c213", + }, + .probe = snd_at73c213_probe, + .suspend = snd_at73c213_suspend, + .resume = snd_at73c213_resume, + .remove = __devexit_p(snd_at73c213_remove), +}; + +static int __init at73c213_init(void) +{ + return spi_register_driver(&at73c213_driver); +} +module_init(at73c213_init); + +static void __exit at73c213_exit(void) +{ + spi_unregister_driver(&at73c213_driver); +} +module_exit(at73c213_exit); + +MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt(a)atmel.com>"); +MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC"); +MODULE_LICENSE("GPL"); diff --git a/sound/spi/at73c213.h b/sound/spi/at73c213.h new file mode 100644 index 0000000..fd8b372 --- /dev/null +++ b/sound/spi/at73c213.h @@ -0,0 +1,119 @@ +/* + * Driver for the AT73C213 16-bit stereo DAC on Atmel ATSTK1000 + * + * Copyright (C) 2006 - 2007 Atmel Corporation + * + * 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. + * + * The full GNU General Public License is included in this + * distribution in the file called COPYING. + */ + +#ifndef _SND_AT73C213_H +#define _SND_AT73C213_H + +/* DAC control register */ +#define DAC_CTRL 0x00 +#define DAC_CTRL_ONPADRV 7 +#define DAC_CTRL_ONAUXIN 6 +#define DAC_CTRL_ONDACR 5 +#define DAC_CTRL_ONDACL 4 +#define DAC_CTRL_ONLNOR 3 +#define DAC_CTRL_ONLNOL 2 +#define DAC_CTRL_ONLNIR 1 +#define DAC_CTRL_ONLNIL 0 + +/* DAC left line in gain register */ +#define DAC_LLIG 0x01 +#define DAC_LLIG_LLIG 0 + +/* DAC right line in gain register */ +#define DAC_RLIG 0x02 +#define DAC_RLIG_RLIG 0 + +/* DAC Left Master Playback Gain Register */ +#define DAC_LMPG 0x03 +#define DAC_LMPG_LMPG 0 + +/* DAC Right Master Playback Gain Register */ +#define DAC_RMPG 0x04 +#define DAC_RMPG_RMPG 0 + +/* DAC Left Line Out Gain Register */ +#define DAC_LLOG 0x05 +#define DAC_LLOG_LLOG 0 + +/* DAC Right Line Out Gain Register */ +#define DAC_RLOG 0x06 +#define DAC_RLOG_RLOG 0 + +/* DAC Output Level Control Register */ +#define DAC_OLC 0x07 +#define DAC_OLC_RSHORT 7 +#define DAC_OLC_ROLC 4 +#define DAC_OLC_LSHORT 3 +#define DAC_OLC_LOLC 0 + +/* DAC Mixer Control Register */ +#define DAC_MC 0x08 +#define DAC_MC_INVR 5 +#define DAC_MC_INVL 4 +#define DAC_MC_RMSMIN2 3 +#define DAC_MC_RMSMIN1 2 +#define DAC_MC_LMSMIN2 1 +#define DAC_MC_LMSMIN1 0 + +/* DAC Clock and Sampling Frequency Control Register */ +#define DAC_CSFC 0x09 +#define DAC_CSFC_OVRSEL 4 + +/* DAC Miscellaneous Register */ +#define DAC_MISC 0x0A +#define DAC_MISC_VCMCAPSEL 7 +#define DAC_MISC_DINTSEL 4 +#define DAC_MISC_DITHEN 3 +#define DAC_MISC_DEEMPEN 2 +#define DAC_MISC_NBITS 0 + +/* DAC Precharge Control Register */ +#define DAC_PRECH 0x0C +#define DAC_PRECH_PRCHGPDRV 7 +#define DAC_PRECH_PRCHGAUX1 6 +#define DAC_PRECH_PRCHGLNOR 5 +#define DAC_PRECH_PRCHGLNOL 4 +#define DAC_PRECH_PRCHGLNIR 3 +#define DAC_PRECH_PRCHGLNIL 2 +#define DAC_PRECH_PRCHG 1 +#define DAC_PRECH_ONMSTR 0 + +/* DAC Auxiliary Input Gain Control Register */ +#define DAC_AUXG 0x0D +#define DAC_AUXG_AUXG 0 + +/* DAC Reset Register */ +#define DAC_RST 0x10 +#define DAC_RST_RESMASK 2 +#define DAC_RST_RESFILZ 1 +#define DAC_RST_RSTZ 0 + +/* Power Amplifier Control Register */ +#define PA_CTRL 0x11 +#define PA_CTRL_APAON 6 +#define PA_CTRL_APAPRECH 5 +#define PA_CTRL_APALP 4 +#define PA_CTRL_APAGAIN 0 + +#endif /* _SND_AT73C213_H */ -- 1.5.2.3 --=-AUyv9PDBqTOzFdJ/BnKL--

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[PATCH 1/1] ALSA sound driver for the AT73C213 DAC using Atmel SSC driver
by Hans-Christian Egtvedt 05 Jul '07

05 Jul '07

This patch adds support for the AT73C213 DAC using the misc Atmel SSC driver in I2S mode. The driver also requires a SPI to setup the registers and control volume. It has been tested with an AT32AP7000 on the ATSTK1000 development board. The driver should also work with any Atmel device with an SSC module supported by the Atmel SSC driver (atmel-ssc). The atmel-ssc driver is just submitted to the Linux kernel. Please see mail thread http://lkml.org/lkml/2007/7/16/32 Signed-off-by: Hans-Christian Egtvedt <hcegtvedt(a)atmel.com> --- include/linux/spi/at73c213.h | 25 + sound/spi/Kconfig | 25 + sound/spi/Makefile | 3 + sound/spi/at73c213.c | 1121 ++++++++++++++++++++++++++++++++++++++++++ sound/spi/at73c213.h | 119 +++++ 5 files changed, 1293 insertions(+), 0 deletions(-) create mode 100644 include/linux/spi/at73c213.h create mode 100644 sound/spi/at73c213.c create mode 100644 sound/spi/at73c213.h diff --git a/include/linux/spi/at73c213.h b/include/linux/spi/at73c213.h new file mode 100644 index 0000000..0f20a70 --- /dev/null +++ b/include/linux/spi/at73c213.h @@ -0,0 +1,25 @@ +/* + * Board-specific data used to set up AT73c213 audio DAC driver. + */ + +#ifndef __LINUX_SPI_AT73C213_H +#define __LINUX_SPI_AT73C213_H + +/** + * at73c213_board_info - how the external DAC is wired to the device. + * + * @ssc_id: SSC platform_driver id the DAC shall use to stream the audio. + * @dac_clk: the external clock used to provide master clock to the DAC. + * @shortname: a short discription for the DAC, seen by userspace tools. + * + * This struct contains the configuration of the hardware connection to the + * external DAC. The DAC needs a master clock and a I2S audio stream. It also + * provides a name which is used to identify it in userspace tools. + */ +struct at73c213_board_info { + int ssc_id; + struct clk *dac_clk; + char shortname[32]; +}; + +#endif /* __LINUX_SPI_AT73C213_H */ diff --git a/sound/spi/Kconfig b/sound/spi/Kconfig index 60fbb2a..0d08c29 100644 --- a/sound/spi/Kconfig +++ b/sound/spi/Kconfig @@ -3,4 +3,29 @@ menu "SPI devices" depends on SND != n +config SND_AT73C213 + tristate "Atmel AT73C213 DAC driver" + depends on ATMEL_SSC + select SND_PCM + help + Say Y here if you want to use the Atmel AT73C213 external DAC. This + DAC can be found on Atmel development boards. + + This driver requires the Atmel SSC driver for sound sink, a + peripheral found on most AT91 and AVR32 microprocessors. + + To compile this driver as a module, choose M here: the module will be + called snd-at73c213. + +config SND_AT73C213_TARGET_BITRATE + int "Target bitrate for AT73C213" + depends on SND_AT73C213 + default "48000" + range 8000 50000 + help + Sets the target bitrate for the bitrate calculator in the driver. + Limited by hardware to be between 8000 Hz and 50000 Hz. + + Set to 48000 Hz by default. + endmenu diff --git a/sound/spi/Makefile b/sound/spi/Makefile index 30d8ec9..026fb73 100644 --- a/sound/spi/Makefile +++ b/sound/spi/Makefile @@ -1,2 +1,5 @@ # Makefile for SPI drivers +snd-at73c213-objs := at73c213.o + +obj-$(CONFIG_SND_AT73C213) += snd-at73c213.o diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c new file mode 100644 index 0000000..f514f47 --- /dev/null +++ b/sound/spi/at73c213.c @@ -0,0 +1,1121 @@ +/* + * Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC + * + * Copyright (C) 2006-2007 Atmel Norway + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +/*#define DEBUG*/ + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/io.h> + +#include <sound/driver.h> +#include <sound/initval.h> +#include <sound/control.h> +#include <sound/core.h> +#include <sound/pcm.h> + +#include <linux/atmel-ssc.h> + +#include <linux/spi/spi.h> +#include <linux/spi/at73c213.h> + +#include "at73c213.h" + +#define BITRATE_MIN 8000 /* Hardware limit? */ +#define BITRATE_TARGET CONFIG_SND_AT73C213_TARGET_BITRATE +#define BITRATE_MAX 50000 /* Hardware limit. */ + +/* Initial (hardware reset) AT73C213 register values. */ +static u8 snd_at73c213_original_image[18] = +{ + 0x00, /* 00 - CTRL */ + 0x05, /* 01 - LLIG */ + 0x05, /* 02 - RLIG */ + 0x08, /* 03 - LPMG */ + 0x08, /* 04 - RPMG */ + 0x00, /* 05 - LLOG */ + 0x00, /* 06 - RLOG */ + 0x22, /* 07 - OLC */ + 0x09, /* 08 - MC */ + 0x00, /* 09 - CSFC */ + 0x00, /* 0A - MISC */ + 0x00, /* 0B - */ + 0x00, /* 0C - PRECH */ + 0x05, /* 0D - AUXG */ + 0x00, /* 0E - */ + 0x00, /* 0F - */ + 0x00, /* 10 - RST */ + 0x00, /* 11 - PA_CTRL */ +}; + +struct snd_at73c213 { + struct snd_card *card; + struct snd_pcm *pcm; + struct snd_pcm_substream *substream; + struct at73c213_board_info *board; + int irq; + int period; + unsigned long bitrate; + struct clk *bitclk; + struct ssc_device *ssc; + struct spi_device *spi; + u8 spi_wbuffer[2]; + u8 spi_rbuffer[2]; + /* Image of the SPI registers in AT73C213. */ + u8 reg_image[18]; + /* Protect registers against concurrent access. */ + spinlock_t lock; +}; + +#define get_chip(card) ((struct snd_at73c213 *)card->private_data) + +static int +snd_at73c213_write_reg(struct snd_at73c213 *chip, u8 reg, u8 val) +{ + struct spi_message msg; + struct spi_transfer msg_xfer = { + .len = 2, + .cs_change = 0, + }; + int retval; + + spi_message_init(&msg); + + chip->spi_wbuffer[0] = reg; + chip->spi_wbuffer[1] = val; + + msg_xfer.tx_buf = chip->spi_wbuffer; + msg_xfer.rx_buf = chip->spi_rbuffer; + spi_message_add_tail(&msg_xfer, &msg); + + retval = spi_sync(chip->spi, &msg); + + if (!retval) + chip->reg_image[reg] = val; + + return retval; +} + +static struct snd_pcm_hardware snd_at73c213_playback_hw = { + .info = SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER, + .formats = SNDRV_PCM_FMTBIT_S16_BE, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = 8000, /* Replaced by chip->bitrate later. */ + .rate_max = 50000, /* Replaced by chip->bitrate later. */ + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = 64 * 1024 - 1, + .period_bytes_min = 512, + .period_bytes_max = 64 * 1024 - 1, + .periods_min = 4, + .periods_max = 1024, +}; + +/* + * Calculate and set bitrate and divisions. + */ +static int snd_at73c213_set_bitrate(struct snd_at73c213 *chip) +{ + unsigned long ssc_rate = clk_get_rate(chip->ssc->clk); + unsigned long dac_rate_new, ssc_div, status; + unsigned long ssc_div_max, ssc_div_min; + int max_tries; + + /* + * We connect two clocks here, picking divisors so the I2S clocks + * out data at the same rate the DAC clocks it in ... and as close + * as practical to the desired target rate. + * + * The DAC master clock (MCLK) is programmable, and is either 256 + * or (not here) 384 times the I2S output clock (BCLK). + */ + + /* SSC clock / (bitrate * stereo * 16-bit). */ + ssc_div = ssc_rate / (BITRATE_TARGET * 2 * 16); + ssc_div_min = ssc_rate / (BITRATE_MAX * 2 * 16); + ssc_div_max = ssc_rate / (BITRATE_MIN * 2 * 16); + max_tries = (ssc_div_max - ssc_div_min) / 2; + + if (max_tries < 1) + max_tries = 1; + + /* ssc_div must be a power of 2. */ + ssc_div = (ssc_div + 1) & ~1UL; + + if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN) { + ssc_div -= 2; + if ((ssc_rate / (ssc_div * 2 * 16)) > BITRATE_MAX) + return -ENXIO; + } + + /* Search for a possible bitrate. */ + do { + /* SSC clock / (ssc divider * 16-bit * stereo). */ + if ((ssc_rate / (ssc_div * 2 * 16)) < BITRATE_MIN) + return -ENXIO; + + /* 256 / (2 * 16) = 8 */ + dac_rate_new = 8 * (ssc_rate / ssc_div); + + status = clk_round_rate(chip->board->dac_clk, dac_rate_new); + if (status < 0) + return status; + + /* Ignore difference smaller than 256 Hz. */ + if ((status/256) == (dac_rate_new/256)) + goto set_rate; + + ssc_div += 2; + } while (--max_tries); + + /* Not able to find a valid bitrate. */ + return -ENXIO; + +set_rate: + status = clk_set_rate(chip->board->dac_clk, status); + if (status < 0) + return status; + + /* Set divider in SSC device. */ + ssc_writel(chip->ssc->regs, CMR, ssc_div/2); + + /* SSC clock / (ssc divider * 16-bit * stereo). */ + chip->bitrate = ssc_rate / (ssc_div * 16 * 2); + + dev_info(&chip->spi->dev, + "at73c213: supported bitrate is %lu (%lu divider)\n", + chip->bitrate, ssc_div); + + return 0; +} + +static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + snd_at73c213_playback_hw.rate_min = chip->bitrate; + snd_at73c213_playback_hw.rate_max = chip->bitrate; + runtime->hw = snd_at73c213_playback_hw; + chip->substream = substream; + + return 0; +} + +static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + chip->substream = NULL; + return 0; +} + +static int snd_at73c213_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + return snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); +} + +static int snd_at73c213_pcm_hw_free(struct snd_pcm_substream *substream) +{ + return snd_pcm_lib_free_pages(substream); +} + +static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + int block_size; + + block_size = frames_to_bytes(runtime, runtime->period_size); + + chip->period = 0; + + ssc_writel(chip->ssc->regs, PDC_TPR, + (long)runtime->dma_addr); + ssc_writel(chip->ssc->regs, PDC_TCR, runtime->period_size * 2); + ssc_writel(chip->ssc->regs, PDC_TNPR, + (long)runtime->dma_addr + block_size); + ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2); + + return 0; +} + +static int snd_at73c213_pcm_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + int retval = 0; + + spin_lock(&chip->lock); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + ssc_writel(chip->ssc->regs, IER, SSC_BIT(IER_ENDTX)); + ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTEN)); + break; + case SNDRV_PCM_TRIGGER_STOP: + ssc_writel(chip->ssc->regs, PDC_PTCR, SSC_BIT(PDC_PTCR_TXTDIS)); + ssc_writel(chip->ssc->regs, IDR, SSC_BIT(IDR_ENDTX)); + break; + default: + dev_dbg(&chip->spi->dev, "spurious command %x\n", cmd); + retval = -EINVAL; + break; + } + + spin_unlock(&chip->lock); + + return retval; +} + +static snd_pcm_uframes_t +snd_at73c213_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_uframes_t pos; + unsigned long bytes; + + bytes = ssc_readl(chip->ssc->regs, PDC_TPR) + - (unsigned long)runtime->dma_addr; + + pos = bytes_to_frames(runtime, bytes); + if (pos >= runtime->buffer_size) + pos -= runtime->buffer_size; + + return pos; +} + +static struct snd_pcm_ops at73c213_playback_ops = { + .open = snd_at73c213_pcm_open, + .close = snd_at73c213_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_at73c213_pcm_hw_params, + .hw_free = snd_at73c213_pcm_hw_free, + .prepare = snd_at73c213_pcm_prepare, + .trigger = snd_at73c213_pcm_trigger, + .pointer = snd_at73c213_pcm_pointer, +}; + +static void snd_at73c213_pcm_free(struct snd_pcm *pcm) +{ + struct snd_at73c213 *chip = snd_pcm_chip(pcm); + if (chip->pcm) { + snd_pcm_lib_preallocate_free_for_all(chip->pcm); + chip->pcm = NULL; + } +} + +static int __devinit snd_at73c213_pcm_new(struct snd_at73c213 *chip, int device) +{ + struct snd_pcm *pcm; + int retval; + + retval = snd_pcm_new(chip->card, chip->card->shortname, + device, 1, 0, &pcm); + if (retval < 0) + goto out; + + pcm->private_data = chip; + pcm->private_free = snd_at73c213_pcm_free; + pcm->info_flags = SNDRV_PCM_INFO_BLOCK_TRANSFER; + strcpy(pcm->name, "at73c213"); + chip->pcm = pcm; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &at73c213_playback_ops); + + retval = snd_pcm_lib_preallocate_pages_for_all(chip->pcm, + SNDRV_DMA_TYPE_DEV, &chip->ssc->pdev->dev, + 64 * 1024, 64 * 1024); +out: + return retval; +} + +static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id) +{ + struct snd_at73c213 *chip = dev_id; + struct snd_pcm_runtime *runtime = chip->substream->runtime; + u32 status; + int offset; + int block_size; + int next_period; + int retval = IRQ_NONE; + + spin_lock(&chip->lock); + + block_size = frames_to_bytes(runtime, runtime->period_size); + status = ssc_readl(chip->ssc->regs, IMR); + + if (status & SSC_BIT(IMR_ENDTX)) { + chip->period++; + if (chip->period == runtime->periods) + chip->period = 0; + next_period = chip->period + 1; + if (next_period == runtime->periods) + next_period = 0; + + offset = block_size * next_period; + + ssc_writel(chip->ssc->regs, PDC_TNPR, + (long)runtime->dma_addr + offset); + ssc_writel(chip->ssc->regs, PDC_TNCR, runtime->period_size * 2); + retval = IRQ_HANDLED; + } + + ssc_readl(chip->ssc->regs, IMR); + spin_unlock(&chip->lock); + + if (status & SSC_BIT(IMR_ENDTX)) + snd_pcm_period_elapsed(chip->substream); + + return retval; +} + +/* + * Mixer functions. + */ +static int snd_at73c213_mono_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 8) & 0xff; + int mask = (kcontrol->private_value >> 16) & 0xff; + int invert = (kcontrol->private_value >> 24) & 0xff; + + spin_lock_irq(&chip->lock); + + ucontrol->value.integer.value[0] = (chip->reg_image[reg] >> shift) & mask; + + if (invert) + ucontrol->value.integer.value[0] = + (mask - ucontrol->value.integer.value[0]); + + spin_unlock_irq(&chip->lock); + + return 0; +} + +static int snd_at73c213_mono_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 8) & 0xff; + int mask = (kcontrol->private_value >> 16) & 0xff; + int invert = (kcontrol->private_value >> 24) & 0xff; + int change, retval; + unsigned short val; + + val = (ucontrol->value.integer.value[0] & mask); + if (invert) + val = mask - val; + val <<= shift; + + spin_lock_irq(&chip->lock); + + val = (chip->reg_image[reg] & ~(mask << shift)) | val; + change = val != chip->reg_image[reg]; + retval = snd_at73c213_write_reg(chip, reg, val); + + spin_unlock_irq(&chip->lock); + + if (retval) + return retval; + + return change; +} + +static int snd_at73c213_stereo_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + int mask = (kcontrol->private_value >> 24) & 0xff; + + if (mask == 1) + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + else + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + + uinfo->count = 2; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = mask; + + return 0; +} + +static int snd_at73c213_stereo_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int left_reg = kcontrol->private_value & 0xff; + int right_reg = (kcontrol->private_value >> 8) & 0xff; + int shift_left = (kcontrol->private_value >> 16) & 0x07; + int shift_right = (kcontrol->private_value >> 19) & 0x07; + int mask = (kcontrol->private_value >> 24) & 0xff; + int invert = (kcontrol->private_value >> 22) & 1; + + spin_lock_irq(&chip->lock); + + ucontrol->value.integer.value[0] = + (chip->reg_image[left_reg] >> shift_left) & mask; + ucontrol->value.integer.value[1] = + (chip->reg_image[right_reg] >> shift_right) & mask; + + if (invert) { + ucontrol->value.integer.value[0] = + (mask - ucontrol->value.integer.value[0]); + ucontrol->value.integer.value[1] = + (mask - ucontrol->value.integer.value[1]); + } + + spin_unlock_irq(&chip->lock); + + return 0; +} + +static int snd_at73c213_stereo_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int left_reg = kcontrol->private_value & 0xff; + int right_reg = (kcontrol->private_value >> 8) & 0xff; + int shift_left = (kcontrol->private_value >> 16) & 0x07; + int shift_right = (kcontrol->private_value >> 19) & 0x07; + int mask = (kcontrol->private_value >> 24) & 0xff; + int invert = (kcontrol->private_value >> 22) & 1; + int change, retval; + unsigned short val1, val2; + + val1 = ucontrol->value.integer.value[0] & mask; + val2 = ucontrol->value.integer.value[1] & mask; + if (invert) { + val1 = mask - val1; + val2 = mask - val2; + } + val1 <<= shift_left; + val2 <<= shift_right; + + spin_lock_irq(&chip->lock); + + val1 = (chip->reg_image[left_reg] & ~(mask << shift_left)) | val1; + val2 = (chip->reg_image[right_reg] & ~(mask << shift_right)) | val2; + change = val1 != chip->reg_image[left_reg] + || val2 != chip->reg_image[right_reg]; + retval = snd_at73c213_write_reg(chip, left_reg, val1); + if (retval) { + spin_unlock_irq(&chip->lock); + goto out; + } + retval = snd_at73c213_write_reg(chip, right_reg, val2); + if (retval) { + spin_unlock_irq(&chip->lock); + goto out; + } + + spin_unlock_irq(&chip->lock); + + return change; + +out: + return retval; +} + +static int snd_at73c213_mono_switch_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 snd_at73c213_mono_switch_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 8) & 0xff; + int invert = (kcontrol->private_value >> 24) & 0xff; + + spin_lock_irq(&chip->lock); + + ucontrol->value.integer.value[0] = (chip->reg_image[reg] >> shift) & 0x01; + + if (invert) + ucontrol->value.integer.value[0] = + (0x01 - ucontrol->value.integer.value[0]); + + spin_unlock_irq(&chip->lock); + + return 0; +} + +static int snd_at73c213_mono_switch_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_at73c213 *chip = snd_kcontrol_chip(kcontrol); + int reg = kcontrol->private_value & 0xff; + int shift = (kcontrol->private_value >> 8) & 0xff; + int mask = (kcontrol->private_value >> 16) & 0xff; + int invert = (kcontrol->private_value >> 24) & 0xff; + int change, retval; + unsigned short val; + + if (ucontrol->value.integer.value[0]) + val = mask; + else + val = 0; + + if (invert) + val = mask - val; + val <<= shift; + + spin_lock_irq(&chip->lock); + + val |= (chip->reg_image[reg] & ~(mask << shift)); + change = val != chip->reg_image[reg]; + + retval = snd_at73c213_write_reg(chip, reg, val); + + spin_unlock_irq(&chip->lock); + + if (retval) + return retval; + + return change; +} + +static int snd_at73c213_pa_volume_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = ((kcontrol->private_value >> 16) & 0xff) - 1; + + return 0; +} + +static int snd_at73c213_line_capture_volume_info( + struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 2; + /* When inverted will give values 0x10001 => 0. */ + uinfo->value.integer.min = 14; + uinfo->value.integer.max = 31; + + return 0; +} + +static int snd_at73c213_aux_capture_volume_info( + struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + /* When inverted will give values 0x10001 => 0. */ + uinfo->value.integer.min = 14; + uinfo->value.integer.max = 31; + + return 0; +} + +#define AT73C213_MONO_SWITCH(xname, xindex, reg, shift, mask, invert) \ +{ \ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = xname, \ + .index = xindex, \ + .info = snd_at73c213_mono_switch_info, \ + .get = snd_at73c213_mono_switch_get, \ + .put = snd_at73c213_mono_switch_put, \ + .private_value = (reg | (shift << 8) | (mask << 16) | (invert << 24)) \ +} + +#define AT73C213_STEREO(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \ +{ \ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = xname, \ + .index = xindex, \ + .info = snd_at73c213_stereo_info, \ + .get = snd_at73c213_stereo_get, \ + .put = snd_at73c213_stereo_put, \ + .private_value = (left_reg | (right_reg << 8) \ + | (shift_left << 16) | (shift_right << 19) \ + | (mask << 24) | (invert << 22)) \ +} + +static struct snd_kcontrol_new snd_at73c213_controls[] __devinitdata = { +AT73C213_STEREO("Master Playback Volume", 0, DAC_LMPG, DAC_RMPG, 0, 0, 0x1f, 1), +AT73C213_STEREO("Master Playback Switch", 0, DAC_LMPG, DAC_RMPG, 5, 5, 1, 1), +AT73C213_STEREO("PCM Playback Volume", 0, DAC_LLOG, DAC_RLOG, 0, 0, 0x1f, 1), +AT73C213_STEREO("PCM Playback Switch", 0, DAC_LLOG, DAC_RLOG, 5, 5, 1, 1), +AT73C213_MONO_SWITCH("Mono PA Playback Switch", 0, DAC_CTRL, DAC_CTRL_ONPADRV, 0x01, 0), +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "PA Playback Volume", + .index = 0, + .info = snd_at73c213_pa_volume_info, + .get = snd_at73c213_mono_get, + .put = snd_at73c213_mono_put, + .private_value = PA_CTRL | (PA_CTRL_APAGAIN << 8) | (0x0f << 16) | (1 << 24), +}, +AT73C213_MONO_SWITCH("PA High Gain Playback Switch", 0, PA_CTRL, PA_CTRL_APALP, 0x01, 1), +AT73C213_MONO_SWITCH("PA Playback Switch", 0, PA_CTRL, PA_CTRL_APAON, 0x01, 0), +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Aux Capture Volume", + .index = 0, + .info = snd_at73c213_aux_capture_volume_info, + .get = snd_at73c213_mono_get, + .put = snd_at73c213_mono_put, + .private_value = DAC_AUXG | (0 << 8) | (0x1f << 16) | (1 << 24), +}, +AT73C213_MONO_SWITCH("Aux Capture Switch", 0, DAC_CTRL, DAC_CTRL_ONAUXIN, 0x01, 0), +{ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Line Capture Volume", + .index = 0, + .info = snd_at73c213_line_capture_volume_info, + .get = snd_at73c213_stereo_get, + .put = snd_at73c213_stereo_put, + .private_value = DAC_LLIG | (DAC_RLIG << 8) | (0 << 16) | (0 << 19) + | (0x1f << 24) | (1 << 22), +}, +AT73C213_MONO_SWITCH("Line Capture Switch", 0, DAC_CTRL, 0, 0x03, 0), +}; + +static int __devinit snd_at73c213_mixer(struct snd_at73c213 *chip) +{ + struct snd_card *card; + int errval, idx; + + if (chip == NULL || chip->pcm == NULL) + return -EINVAL; + + card = chip->card; + + strcpy(card->mixername, chip->pcm->name); + + for (idx = 0; idx < ARRAY_SIZE(snd_at73c213_controls); idx++) { + errval = snd_ctl_add(card, + snd_ctl_new1(&snd_at73c213_controls[idx], + chip)); + if (errval < 0) + goto cleanup; + } + + return 0; + +cleanup: + for (idx = 1; idx < ARRAY_SIZE(snd_at73c213_controls) + 1; idx++) { + struct snd_kcontrol *kctl; + kctl = snd_ctl_find_numid(card, idx); + if (kctl) + snd_ctl_remove(card, kctl); + } + return errval; +} + +/* + * Device functions + */ +static int snd_at73c213_ssc_init(struct snd_at73c213 *chip) +{ + /* + * Continuous clock output. + * Starts on falling TF. + * Delay 1 cycle (1 bit). + * Periode is 16 bit (16 - 1). + */ + ssc_writel(chip->ssc->regs, TCMR, + SSC_BF(TCMR_CKO, 1) + | SSC_BF(TCMR_START, 4) + | SSC_BF(TCMR_STTDLY, 1) + | SSC_BF(TCMR_PERIOD, 16 - 1)); + /* + * Data length is 16 bit (16 - 1). + * Transmit MSB first. + * Transmit 2 words each transfer. + * Frame sync length is 16 bit (16 - 1). + * Frame starts on negative pulse. + */ + ssc_writel(chip->ssc->regs, TFMR, + SSC_BF(TFMR_DATLEN, 16 - 1) + | SSC_BIT(TFMR_MSBF) + | SSC_BF(TFMR_DATNB, 1) + | SSC_BF(TFMR_FSLEN, 16 - 1) + | SSC_BF(TFMR_FSOS, 1)); + + return 0; +} + +static int snd_at73c213_chip_init(struct snd_at73c213 *chip) +{ + int retval; + unsigned char dac_ctrl = 0; + + retval = snd_at73c213_set_bitrate(chip); + if (retval) + goto out; + + /* Enable DAC master clock. */ + clk_enable(chip->board->dac_clk); + + /* Initialize at73c213 on SPI bus. */ + retval = snd_at73c213_write_reg(chip, DAC_RST, 0x04); + if (retval) + goto out_clk; + msleep(1); + retval = snd_at73c213_write_reg(chip, DAC_RST, 0x03); + if (retval) + goto out_clk; + + /* Precharge everything. */ + retval = snd_at73c213_write_reg(chip, DAC_PRECH, 0xff); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, PA_CTRL, (1<<PA_CTRL_APAPRECH)); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_CTRL, + (1<<DAC_CTRL_ONLNOL) | (1<<DAC_CTRL_ONLNOR)); + if (retval) + goto out_clk; + + msleep(50); + + /* Stop precharging PA. */ + retval = snd_at73c213_write_reg(chip, PA_CTRL, + (1<<PA_CTRL_APALP) | 0x0f); + if (retval) + goto out_clk; + + msleep(450); + + /* Stop precharging DAC, turn on master power. */ + retval = snd_at73c213_write_reg(chip, DAC_PRECH, (1<<DAC_PRECH_ONMSTR)); + if (retval) + goto out_clk; + + msleep(1); + + /* Turn on DAC. */ + dac_ctrl = (1<<DAC_CTRL_ONDACL) | (1<<DAC_CTRL_ONDACR) + | (1<<DAC_CTRL_ONLNOL) | (1<<DAC_CTRL_ONLNOR); + + retval = snd_at73c213_write_reg(chip, DAC_CTRL, dac_ctrl); + if (retval) + goto out_clk; + + /* Mute sound. */ + retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_RMPG, 0x3f); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_LLOG, 0x3f); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_RLOG, 0x3f); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_LLIG, 0x11); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_RLIG, 0x11); + if (retval) + goto out_clk; + retval = snd_at73c213_write_reg(chip, DAC_AUXG, 0x11); + if (retval) + goto out_clk; + + /* Enable I2S device, i.e. clock output. */ + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN)); + + goto out; + +out_clk: + clk_disable(chip->board->dac_clk); +out: + return retval; +} + +static int snd_at73c213_dev_free(struct snd_device *device) +{ + struct snd_at73c213 *chip = device->device_data; + + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + if (chip->irq >= 0) { + free_irq(chip->irq, chip); + chip->irq = -1; + } + + return 0; +} + +static int __devinit snd_at73c213_dev_init(struct snd_card *card, + struct spi_device *spi) +{ + static struct snd_device_ops ops = { + .dev_free = snd_at73c213_dev_free, + }; + struct snd_at73c213 *chip = get_chip(card); + int irq, retval; + + irq = chip->ssc->irq; + if (irq < 0) + return irq; + + spin_lock_init(&chip->lock); + chip->card = card; + chip->irq = -1; + + retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip); + if (retval) { + dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq); + goto out; + } + chip->irq = irq; + + memcpy(&chip->reg_image, &snd_at73c213_original_image, + sizeof(snd_at73c213_original_image)); + + retval = snd_at73c213_ssc_init(chip); + if (retval) + goto out_irq; + + retval = snd_at73c213_chip_init(chip); + if (retval) + goto out_irq; + + retval = snd_at73c213_pcm_new(chip, 0); + if (retval) + goto out_irq; + + retval = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); + if (retval) + goto out_irq; + + retval = snd_at73c213_mixer(chip); + if (retval) + goto out_snd_dev; + + snd_card_set_dev(card, &spi->dev); + + goto out; + +out_snd_dev: + snd_device_free(card, chip); +out_irq: + free_irq(chip->irq, chip); + chip->irq = -1; +out: + return retval; +} + +static int snd_at73c213_probe(struct spi_device *spi) +{ + struct snd_card *card; + struct snd_at73c213 *chip; + struct at73c213_board_info *board; + int retval; + char id[16]; + + board = spi->dev.platform_data; + if (!board) { + dev_dbg(&spi->dev, "no platform_data\n"); + return -ENXIO; + } + + if (!board->dac_clk) { + dev_dbg(&spi->dev, "no DAC clk\n"); + return -ENXIO; + } + + if (IS_ERR(board->dac_clk)) { + dev_dbg(&spi->dev, "no DAC clk\n"); + return PTR_ERR(board->dac_clk); + } + + retval = -ENOMEM; + + /* Allocate "card" using some unused identifiers. */ + snprintf(id, sizeof id, "at73c213_%d", board->ssc_id); + card = snd_card_new(-1, id, THIS_MODULE, sizeof(struct snd_at73c213)); + if (!card) + goto out; + + chip = card->private_data; + chip->spi = spi; + chip->board = board; + + chip->ssc = ssc_request(board->ssc_id); + if (IS_ERR(chip->ssc)) { + dev_dbg(&spi->dev, "could not get ssc%d device\n", + board->ssc_id); + retval = PTR_ERR(chip->ssc); + goto out_card; + } + + retval = snd_at73c213_dev_init(card, spi); + if (retval) + goto out_ssc; + + strcpy(card->driver, "at73c213"); + strcpy(card->shortname, board->shortname); + sprintf(card->longname, "%s on irq %d", card->shortname, chip->irq); + + retval = snd_card_register(card); + if (retval) + goto out_ssc; + + dev_set_drvdata(&spi->dev, card); + + goto out; + +out_ssc: + ssc_free(chip->ssc); +out_card: + snd_card_free(card); +out: + return retval; +} + +static int __devexit snd_at73c213_remove(struct spi_device *spi) +{ + struct snd_card *card = dev_get_drvdata(&spi->dev); + struct snd_at73c213 *chip = card->private_data; + int retval; + + /* Stop playback. */ + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + + /* Mute sound. */ + retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_RMPG, 0x3f); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_LLOG, 0x3f); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_RLOG, 0x3f); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_LLIG, 0x11); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_RLIG, 0x11); + if (retval) + goto out; + retval = snd_at73c213_write_reg(chip, DAC_AUXG, 0x11); + if (retval) + goto out; + + /* Turn off PA. */ + retval = snd_at73c213_write_reg(chip, PA_CTRL, (chip->reg_image[PA_CTRL]|0x0f)); + if (retval) + goto out; + msleep(10); + retval = snd_at73c213_write_reg(chip, PA_CTRL, (1<<PA_CTRL_APALP)|0x0f); + if (retval) + goto out; + + /* Turn off external DAC. */ + retval = snd_at73c213_write_reg(chip, DAC_CTRL, 0x0c); + if (retval) + goto out; + msleep(2); + retval = snd_at73c213_write_reg(chip, DAC_CTRL, 0x00); + if (retval) + goto out; + + /* Turn off master power. */ + retval = snd_at73c213_write_reg(chip, DAC_PRECH, 0x00); + if (retval) + goto out; + +out: + /* Stop DAC master clock. */ + clk_disable(chip->board->dac_clk); + + ssc_free(chip->ssc); + snd_card_free(card); + dev_set_drvdata(&spi->dev, NULL); + + return 0; +} + +#ifdef CONFIG_PM +static int snd_at73c213_suspend(struct spi_device *spi, pm_message_t msg) +{ + struct snd_card *card = dev_get_drvdata(&spi->dev); + struct snd_at73c213 *chip = card->private_data; + + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + clk_disable(chip->board->dac_clk); + + return 0; +} + +static int snd_at73c213_resume(struct spi_device *spi) +{ + struct snd_card *card = dev_get_drvdata(&spi->dev); + struct snd_at73c213 *chip = card->private_data; + + clk_enable(chip->board->dac_clk); + ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN)); + + return 0; +} +#else +#define snd_at73c213_suspend NULL +#define snd_at73c213_resume NULL +#endif + +static struct spi_driver at73c213_driver = { + .driver = { + .name = "at73c213", + }, + .probe = snd_at73c213_probe, + .suspend = snd_at73c213_suspend, + .resume = snd_at73c213_resume, + .remove = __devexit_p(snd_at73c213_remove), +}; + +static int __init at73c213_init(void) +{ + return spi_register_driver(&at73c213_driver); +} +module_init(at73c213_init); + +static void __exit at73c213_exit(void) +{ + spi_unregister_driver(&at73c213_driver); +} +module_exit(at73c213_exit); + +MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt(a)atmel.com>"); +MODULE_DESCRIPTION("Sound driver for AT73C213 with Atmel SSC"); +MODULE_LICENSE("GPL"); diff --git a/sound/spi/at73c213.h b/sound/spi/at73c213.h new file mode 100644 index 0000000..fd8b372 --- /dev/null +++ b/sound/spi/at73c213.h @@ -0,0 +1,119 @@ +/* + * Driver for the AT73C213 16-bit stereo DAC on Atmel ATSTK1000 + * + * Copyright (C) 2006 - 2007 Atmel Corporation + * + * 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. + * + * The full GNU General Public License is included in this + * distribution in the file called COPYING. + */ + +#ifndef _SND_AT73C213_H +#define _SND_AT73C213_H + +/* DAC control register */ +#define DAC_CTRL 0x00 +#define DAC_CTRL_ONPADRV 7 +#define DAC_CTRL_ONAUXIN 6 +#define DAC_CTRL_ONDACR 5 +#define DAC_CTRL_ONDACL 4 +#define DAC_CTRL_ONLNOR 3 +#define DAC_CTRL_ONLNOL 2 +#define DAC_CTRL_ONLNIR 1 +#define DAC_CTRL_ONLNIL 0 + +/* DAC left line in gain register */ +#define DAC_LLIG 0x01 +#define DAC_LLIG_LLIG 0 + +/* DAC right line in gain register */ +#define DAC_RLIG 0x02 +#define DAC_RLIG_RLIG 0 + +/* DAC Left Master Playback Gain Register */ +#define DAC_LMPG 0x03 +#define DAC_LMPG_LMPG 0 + +/* DAC Right Master Playback Gain Register */ +#define DAC_RMPG 0x04 +#define DAC_RMPG_RMPG 0 + +/* DAC Left Line Out Gain Register */ +#define DAC_LLOG 0x05 +#define DAC_LLOG_LLOG 0 + +/* DAC Right Line Out Gain Register */ +#define DAC_RLOG 0x06 +#define DAC_RLOG_RLOG 0 + +/* DAC Output Level Control Register */ +#define DAC_OLC 0x07 +#define DAC_OLC_RSHORT 7 +#define DAC_OLC_ROLC 4 +#define DAC_OLC_LSHORT 3 +#define DAC_OLC_LOLC 0 + +/* DAC Mixer Control Register */ +#define DAC_MC 0x08 +#define DAC_MC_INVR 5 +#define DAC_MC_INVL 4 +#define DAC_MC_RMSMIN2 3 +#define DAC_MC_RMSMIN1 2 +#define DAC_MC_LMSMIN2 1 +#define DAC_MC_LMSMIN1 0 + +/* DAC Clock and Sampling Frequency Control Register */ +#define DAC_CSFC 0x09 +#define DAC_CSFC_OVRSEL 4 + +/* DAC Miscellaneous Register */ +#define DAC_MISC 0x0A +#define DAC_MISC_VCMCAPSEL 7 +#define DAC_MISC_DINTSEL 4 +#define DAC_MISC_DITHEN 3 +#define DAC_MISC_DEEMPEN 2 +#define DAC_MISC_NBITS 0 + +/* DAC Precharge Control Register */ +#define DAC_PRECH 0x0C +#define DAC_PRECH_PRCHGPDRV 7 +#define DAC_PRECH_PRCHGAUX1 6 +#define DAC_PRECH_PRCHGLNOR 5 +#define DAC_PRECH_PRCHGLNOL 4 +#define DAC_PRECH_PRCHGLNIR 3 +#define DAC_PRECH_PRCHGLNIL 2 +#define DAC_PRECH_PRCHG 1 +#define DAC_PRECH_ONMSTR 0 + +/* DAC Auxiliary Input Gain Control Register */ +#define DAC_AUXG 0x0D +#define DAC_AUXG_AUXG 0 + +/* DAC Reset Register */ +#define DAC_RST 0x10 +#define DAC_RST_RESMASK 2 +#define DAC_RST_RESFILZ 1 +#define DAC_RST_RSTZ 0 + +/* Power Amplifier Control Register */ +#define PA_CTRL 0x11 +#define PA_CTRL_APAON 6 +#define PA_CTRL_APAPRECH 5 +#define PA_CTRL_APALP 4 +#define PA_CTRL_APAGAIN 0 + +#endif /* _SND_AT73C213_H */ -- 1.5.2.3 --=-zhf1GaBSeEtL5hs3rxas--

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