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

[alsa-devel] Voip Application with ALSA OSS Emulation ==> voice delay
by Akio 20 Aug '07

20 Aug '07

Dear Sir: Could you do me a favor? Right now, we are using a arm box with linux kernel 2.6.14 to develop a voip solution. After the rtp connection was connected at first 20 secs, there is no delay. As the timing passing by, the delay will going longer and longer. After 16 houres, the delay will up to 12 secs. Because the alsa lib application can't detect any alsa device, we have no choice but only alsa oss emulation data path to using audio device. after tracing sound/core/oss/pcm_oss.c. we find some things. 1.in snd_pcm_oss_write() and in snd_pcm_oss_read(), there is a little slight difference. in snd_pcm_oss_write(), before and after snd_pcm_oss_write1() there are using up() and down() to protect snd_pcm_oss_write1(). but in snd_pcm_oss_read(), there is no protection. why doesn't use up() and down() to protect snd_pcm_oss_read1()? 2.after using printk to tracing runtime->oss.xxx fields in snd_pcm_oss_read1(), we got the data positions seem correct. and alignment very well. what should we have to check? where do we have to check? 3.in snd_pcm_oss_capture_position_fixup(), why using the following condition to check, if (*delay <= (snd_pcm_sframes_t)runtime->buffer_size)? why not using if (*delay <= (snd_pcm_sframes_t)runtime->period_size)? because the following wrapping, frames = (*delay - runtime->buffer_size) + runtime->period_size - 1; frames /= runtime->period_size; frames *= runtime->period_size; using runtime->period_size, not runtime->buffer_size. 4.why using snd_pcm_oss_capture_position_fixup() in snd_pcm_oss_read3() not in snd_pcm_oss_read()? 5.the following url seem counter the same problems. http://blackfin.uclinux.org/gf/project/uclinux-dist/forum/? action=ForumBrowse&forum_id=39&_forum_action= ForumMessageBrowse&thread_id=22524 We will check the write direction to see the runtime->oss.xxx fields will act as the same read or not. Thanks in advance. Best Regards, Akio

2 2

[alsa-devel] MAYA44 PCI
by Piotrek 19 Aug '07

19 Aug '07

Dear Developers, I tried to run my ESI MAYA44 PCI with alsa compiled with ice1724 driver, but I can't run alsamixer because of the error: alsamixer: function snd_ctl_open failed for default: No such device. Card does not work. Any suggestions how to configure it or maybe it's more difficult to get it working? I have reported an error on alsa bugtracker: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3303 -- Best Regards, Piotr Makowski

1 0

[alsa-devel] Noisy audio - ALSA Configuration
by Iovescu, Magdalena 16 Aug '07

16 Aug '07

Does anyone have examples or documentation on how to configure periods, frames and buffers for various sample rates? I am writing a program to route a mp3 decoder output to ALSA on an ARM processor, and I get noisy audio. For a CD quality stream (S16_LE, 44100 kHz, Stereo, 128 bps) I am using an output buffer of 44100 bytes, a period of 44100/(channels*2). With a buffer this big, I do not get underruns, but all the writes are short writes. I have not been able to find the right configuration to avoid short writes, and more importantly, to get good quality audio. What do 'short writes' (I am using writei) really mean? Is this a performance issue in the driver, or is mainly because of buffer setup? I would really appreciate any help with this. Mag

2 2

Re: [alsa-devel] Recent code changes for HD-audio on HG repo
by Nicola Fagnani 16 Aug '07

16 Aug '07

As you said, the patch didn't solve the problem. To test audio I used this simple command: aplay < /bin/bash but if there is no audio output for a while, executing it produces no noise. When I said the sound goes mute, I meant there is no sound, not that some audio channel is muted. If I set the power_save_controller=0 module option the sound works always, so these are the details of my hardware: lspci -v 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02) Subsystem: Realtek Semiconductor Co., Ltd. Unknown device 0885 Flags: bus master, fast devsel, latency 0, IRQ 21 Memory at 52400000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [70] Express Unknown type IRQ 0 cat /proc/asound/card0/codec#0 Codec: Realtek ALC885 Address: 0 Vendor Id: 0x10ec0885 Subsystem Id: 0x106b1000 Revision Id: 0x100103 No Modem Function Group found Default PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Default Amp-In caps: N/A Default Amp-Out caps: N/A Node 0x02 [Audio Output] wcaps 0x11: Stereo PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Node 0x03 [Audio Output] wcaps 0x11: Stereo PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Node 0x04 [Audio Output] wcaps 0x11: Stereo PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Node 0x05 [Audio Output] wcaps 0x11: Stereo PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Node 0x06 [Audio Output] wcaps 0x211: Stereo Digital PCM: rates [0x5e0]: 44100 48000 88200 96000 192000 bits [0x1e]: 16 20 24 32 formats [0x1]: PCM Node 0x07 [Audio Input] wcaps 0x10011b: Stereo Amp-In Amp-In caps: ofs=0x10, nsteps=0x2e, stepsize=0x03, mute=1 Amp-In vals: [0x00 0x00] PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Connection: 1 0x24 Node 0x08 [Audio Input] wcaps 0x10011b: Stereo Amp-In Amp-In caps: ofs=0x10, nsteps=0x2e, stepsize=0x03, mute=1 Amp-In vals: [0x00 0x00] PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Connection: 1 0x23 Node 0x09 [Audio Input] wcaps 0x10011b: Stereo Amp-In Amp-In caps: ofs=0x10, nsteps=0x2e, stepsize=0x03, mute=1 Amp-In vals: [0x00 0x00] PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Connection: 1 0x22 Node 0x0a [Audio Input] wcaps 0x100391: Stereo Digital PCM: rates [0x560]: 44100 48000 96000 192000 bits [0x1e]: 16 20 24 32 formats [0x1]: PCM Connection: 1 0x1f Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1 Amp-In vals: [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] Connection: 10 0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17 Node 0x0c [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x80 0x80] Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0 Amp-Out vals: [0x2c 0x2c] Connection: 2 0x02 0x0b Node 0x0d [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x80 0x80] Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0 Amp-Out vals: [0x40 0x40] Connection: 2 0x03 0x0b Node 0x0e [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x80 0x80] Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0 Amp-Out vals: [0x40 0x40] Connection: 2 0x04 0x0b Node 0x0f [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x80 0x80] Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0 Amp-Out vals: [0x40 0x40] Connection: 2 0x05 0x0b Node 0x10 [Vendor Defined Widget] wcaps 0xf00000: Mono Node 0x11 [Vendor Defined Widget] wcaps 0xf00000: Mono Node 0x12 [Vendor Defined Widget] wcaps 0xf00000: Mono Node 0x13 [Vendor Defined Widget] wcaps 0xf00000: Mono Node 0x14 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x00 0x00] Pincap 0x08373c: IN OUT HP Detect Pin Default 0x012b4050: [Jack] HP Out at Ext Rear Conn = Comb, Color = Green Pin-ctls: 0xc0: OUT HP Connection: 5 0x0c* 0x0d 0x0e 0x0f 0x26 Node 0x15 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x08373c: IN OUT HP Detect Pin Default 0x018b3020: [Jack] Line In at Ext Rear Conn = Comb, Color = Blue Pin-ctls: 0x20: IN Connection: 5 0x0c 0x0d* 0x0e 0x0f 0x26 Node 0x16 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x083c: IN OUT HP Detect Pin Default 0x400000f0: [N/A] Line Out at Ext N/A Conn = Unknown, Color = Unknown Pin-ctls: 0x20: IN Connection: 5 0x0c 0x0d 0x0e* 0x0f 0x26 Node 0x17 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x083c: IN OUT HP Detect Pin Default 0x400000f0: [N/A] Line Out at Ext N/A Conn = Unknown, Color = Unknown Pin-ctls: 0x20: IN Connection: 5 0x0c 0x0d 0x0e 0x0f* 0x26 Node 0x18 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x00 0x00] Pincap 0x08373c: IN OUT HP Detect Pin Default 0x90100140: [Fixed] Speaker at Int N/A Conn = Unknown, Color = Unknown Pin-ctls: 0x40: OUT Connection: 5 0x0c* 0x0d 0x0e 0x0f 0x26 Node 0x19 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x08373c: IN OUT HP Detect Pin Default 0x90a00110: [Fixed] Mic at Int N/A Conn = Unknown, Color = Unknown Pin-ctls: 0x24: IN Connection: 5 0x0c* 0x0d 0x0e 0x0f 0x26 Node 0x1a [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x00 0x00] Pincap 0x08373c: IN OUT HP Detect Pin Default 0x90100141: [Fixed] Speaker at Int N/A Conn = Unknown, Color = Unknown Pin-ctls: 0x40: OUT Connection: 5 0x0c* 0x0d 0x0e 0x0f 0x26 Node 0x1b [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x80 0x80] Pincap 0x08373c: IN OUT HP Detect Pin Default 0x400000f0: [N/A] Line Out at Ext N/A Conn = Unknown, Color = Unknown Pin-ctls: 0x20: IN Connection: 5 0x0c* 0x0d 0x0e 0x0f 0x26 Node 0x1c [Pin Complex] wcaps 0x400001: Stereo Pincap 0x0820: IN Pin Default 0x400000f0: [N/A] Line Out at Ext N/A Conn = Unknown, Color = Unknown Pin-ctls: 0x20: IN Node 0x1d [Pin Complex] wcaps 0x400000: Mono Pincap 0x0820: IN Pin Default 0x400000f0: [N/A] Line Out at Ext N/A Conn = Unknown, Color = Unknown Pin-ctls: 0x20: IN Node 0x1e [Pin Complex] wcaps 0x400300: Mono Digital Pincap 0x0810: OUT Pin Default 0x014be060: [Jack] SPDIF Out at Ext Rear Conn = Comb, Color = White Pin-ctls: 0x40: OUT Connection: 1 0x06 Node 0x1f [Pin Complex] wcaps 0x400200: Mono Digital Pincap 0x0820: IN Pin Default 0x01cbe030: [Jack] SPDIF In at Ext Rear Conn = Comb, Color = White Pin-ctls: 0x20: IN Node 0x20 [Vendor Defined Widget] wcaps 0xf00040: Mono Node 0x21 [Volume Knob Widget] wcaps 0x600080: Mono Node 0x22 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] Connection: 11 0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17 0x0b Node 0x23 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] Connection: 11 0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17 0x0b Node 0x24 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] Connection: 11 0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17 0x0b Node 0x25 [Audio Output] wcaps 0x11: Stereo PCM: rates [0x560]: 44100 48000 96000 192000 bits [0xe]: 16 20 24 formats [0x1]: PCM Node 0x26 [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x80 0x80] Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0 Amp-Out vals: [0x40 0x40] Connection: 2 0x25 0x0b amixer Simple mixer control 'Master',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 64 Mono: Front Left: Playback 44 [69%] [-20.00dB] [on] Front Right: Playback 44 [69%] [-20.00dB] [on] Simple mixer control 'PCM',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 255 [100%] [0.00dB] Front Right: Playback 255 [100%] [0.00dB] Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined cswitch cswitch-joined Playback channels: Mono Capture channels: Mono Mono: Playback [off] Capture [off] Simple mixer control 'Capture',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 46 Front Left: Capture 0 [0%] [-16.00dB] [on] Front Right: Capture 0 [0%] [-16.00dB] [on] Simple mixer control 'Capture',1 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 46 Front Left: Capture 0 [0%] [-16.00dB] [on] Front Right: Capture 0 [0%] [-16.00dB] [on] Simple mixer control 'Capture',2 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 46 Front Left: Capture 0 [0%] [-16.00dB] [on] Front Right: Capture 0 [0%] [-16.00dB] [on] Simple mixer control 'Digital',0 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 120 Front Left: Capture 60 [50%] [0.00dB] Front Right: Capture 60 [50%] [0.00dB] Simple mixer control 'Input Source',0 Capabilities: enum Items: 'Mic' 'Front Mic' 'Line' 'CD' Item0: 'Mic' Simple mixer control 'Input Source',1 Capabilities: enum Items: 'Mic' 'Front Mic' 'Line' 'CD' Item0: 'Mic' Simple mixer control 'Input Source',2 Capabilities: enum Items: 'Mic' 'Front Mic' 'Line' 'CD' Item0: 'Mic' If this isn't enough, let me know. Thanks Nicola Fagnani

2 3

Re: [alsa-devel] Noisy audio - ALSA Configuration
by Iovescu, Magdalena 16 Aug '07

16 Aug '07

>> Does anyone have examples or documentation on how to configure periods, >> frames and buffers for various sample rates? I am writing a program to >> route a mp3 decoder output to ALSA on an ARM processor, and I get noisy >> audio. For a CD quality stream (S16_LE, 44100 kHz, Stereo, 128 bps) I am >> using an output buffer of 44100 bytes, a period of 44100/(channels*2). With >>Be careful about the distinction between bytes and frames (i.e. >>a frame of stereo S16 is 4 bytes) >Start with the period >1024 frames = 4096 bytes >then make your buffer at least 2x this: >8192 bytes > (I'm not an app developer, so others may jump in with a better >explanation) >Did you look at the code in alsa-lib/test? Thanks Eliot, I will try this buffer size. I did look at alsa tests, but I was not too convinced, as when I run those apps I still got plenty of short writes. Would someone please explain why do these 'short writes' occur? >> a buffer this big, I do not get underruns, but I do get all short writes. I >> have not been able to find the right configuration to avoid short writes, >> and more importantly, to get good quality audio. What do 'short writes' (I >> am using writei) really mean? Is this a performance issue in the driver, or > is mainly because of buffer setup? I would really appreciate any help with >> this. >> Magdalena

1 0

[alsa-devel] Writing a new sound driver
by Michael Bourgeous 16 Aug '07

16 Aug '07

I am the developer of the work-in-progress MyHD/TL880 Linux driver. The TL880 chip can act as a sound input and output device, but it doesn't seem to support DMA for sound. Is it possible to write a sound driver for ALSA that uses a polling mechanism? Also, how would I integrate this driver with my core driver for accessing the TL880? The chip's features span four separate kernel subsystems: v4l, dvb, sound, and fb. I guess my main question is this: what is the bare minimum of code and hardware functionality required to write a sound driver? Thanks, Mike Bourgeous http://myhd.sourceforge.net/

5 5

[alsa-devel] Noisy audio - ALSA Configuration
by Magdalena Iovescu 16 Aug '07

16 Aug '07

2 1

[alsa-devel] Recent code changes for HD-audio on HG repo
by nicfagn 15 Aug '07

15 Aug '07

I tested the alsa-driver-hg20070814 snapshot on my system and after the power save timeout (10 secs) the sound stops working. I am on an iMac 24''(2006) with hda and realtek ALC885 and Ubuntu Gutsy with a 2.6.22-9 kernel. If I can help in some way, let me know. Thanks

3 3

[alsa-devel] [PATCH 1/2] Xlinx ML403 AC97 Controller Reference device driver
by Joachim Förster 15 Aug '07

15 Aug '07

From: Joachim Foerster <JOFT(a)gmx.de> Add ALSA support for the opb_ac97_controller_ref_v1_00_a ip core found in Xilinx' ML403 reference design. Known issue: Currently this driver hits a WARN_ON_ONCE(1) statement in kernel/irq/resend.c (line 70). According to Linus (http://lkml.org/lkml/2007/8/5/5) this may be ignored, right? I haven't had a look into this "problem" yet. (Patch for Linus' master branch, date 2007/08/08) This patchset _will_ be published on http://www.esic-solutions.com/support.html soon (like the first version of the driver (tar file), but this may take some days ...). Signed-off-by: Joachim Foerster <JOFT(a)gmx.de> --- sound/ppc/Kconfig | 13 + sound/ppc/Makefile | 2 + sound/ppc/ml403_ac97cr.c | 1274 +++++++++++++++++++++++++++++++++++++++++++++ sound/ppc/pcm-indirect2.h | 658 +++++++++++++++++++++++ 4 files changed, 1947 insertions(+), 0 deletions(-) create mode 100644 sound/ppc/ml403_ac97cr.c create mode 100644 sound/ppc/pcm-indirect2.h diff --git a/sound/ppc/Kconfig b/sound/ppc/Kconfig index cacb0b1..cd492bf 100644 --- a/sound/ppc/Kconfig +++ b/sound/ppc/Kconfig @@ -52,4 +52,17 @@ config SND_PS3_DEFAULT_START_DELAY int "Startup delay time in ms" depends on SND_PS3 default "2000" + +config SND_ML403_AC97CR + tristate "Xilinx ML403 AC97 Controller Reference" + depends on SND && XILINX_VIRTEX + select SND_AC97_CODEC + help + Say Y here to include support for the + opb_ac97_controller_ref_v1_00_a ip core found in Xilinx' ML403 + reference design. + + To compile this driver as a module, choose M here: the module + will be called snd-ml403_ac97cr. + endmenu diff --git a/sound/ppc/Makefile b/sound/ppc/Makefile index eacee2d..827f2f5 100644 --- a/sound/ppc/Makefile +++ b/sound/ppc/Makefile @@ -4,7 +4,9 @@ # snd-powermac-objs := powermac.o pmac.o awacs.o burgundy.o daca.o tumbler.o keywest.o beep.o +snd-ml403_ac97cr-objs := ml403_ac97cr.o # Toplevel Module Dependency obj-$(CONFIG_SND_POWERMAC) += snd-powermac.o obj-$(CONFIG_SND_PS3) += snd_ps3.o +obj-$(CONFIG_SND_ML403_AC97CR) += snd-ml403_ac97cr.o diff --git a/sound/ppc/ml403_ac97cr.c b/sound/ppc/ml403_ac97cr.c new file mode 100644 index 0000000..99791d7 --- /dev/null +++ b/sound/ppc/ml403_ac97cr.c @@ -0,0 +1,1274 @@ + +/* ALSA driver for Xilinx ML403 AC97 Controller Reference + * IP: opb_ac97_controller_ref_v1_00_a (EDK 8.1i) + * IP: opb_ac97_controller_ref_v1_00_a (EDK 9.1i) + * + * Copyright (c) by 2007 Joachim Foerster <JOFT(a)gmx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <sound/driver.h> +#include <linux/init.h> +#include <linux/moduleparam.h> + +#include <linux/platform_device.h> + +#include <linux/ioport.h> +#include <asm/io.h> +#include <linux/interrupt.h> + +/* HZ */ +#include <linux/param.h> +/* jiffies, time_*() */ +#include <linux/jiffies.h> +/* schedule_timeout*() */ +#include <linux/sched.h> +/* spin_lock*() */ +#include <linux/spinlock.h> + +/* snd_printk(), snd_printd() */ +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/initval.h> +#include <sound/ac97_codec.h> + + +#define SND_ML403_AC97CR_DRIVER "ml403_ac97cr" + +MODULE_AUTHOR("Joachim Foerster <JOFT(a)gmx.de>"); +MODULE_DESCRIPTION("Xilinx ML403 AC97 Controller Reference"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{Xilinx,ML403 AC97 Controller Reference}}"); +MODULE_VERSION("0.0.1-pre2"); + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; +static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for ML403 AC97 Controller Reference."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for ML403 AC97 Controller Reference."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable this ML403 AC97 Controller Reference."); + +/* Special feature options */ +/*#define CODEC_WRITE_CHECK_RAF*/ /* don't return after a write to a codec + * register, while RAF bit is not set + */ +/* Debug options for code which may be removed completely in a final version */ +#ifdef CONFIG_SND_DEBUG +/*#define CODEC_STAT*/ /* turn on some minimal "statistics" + * about codec register usage + */ +#define SND_PCM_INDIRECT2_STAT /* turn on some "statistics" about the + * process of copying bytes from the + * intermediate buffer to the hardware + * fifo and the other way round + */ +#endif + +#include "pcm-indirect2.h" + +/* Definition of a "level/facility dependent" printk(); may be removed + * completely in a final version + */ +#undef PDEBUG +#ifdef CONFIG_SND_DEBUG +/* "facilities" for PDEBUG */ +#define UNKNOWN (1<<0) +#define CODEC_SUCCESS (1<<1) +#define CODEC_FAKE (1<<2) +#define INIT_INFO (1<<3) +#define INIT_FAILURE (1<<4) +#define WORK_INFO (1<<5) +#define WORK_FAILURE (1<<6) + +#define PDEBUG_FACILITIES (UNKNOWN | INIT_FAILURE | WORK_FAILURE) + +#define PDEBUG(fac, fmt, args...) if (fac & PDEBUG_FACILITIES) \ + snd_printd(KERN_DEBUG SND_ML403_AC97CR_DRIVER ": " fmt, ##args) +#else +#define PDEBUG(fac, fmt, args...) /* nothing */ +#endif + + + +/* Defines for "waits"/timeouts (portions of HZ=250 on arch/ppc by default) */ +#define CODEC_TIMEOUT_ON_INIT 5 /* timeout for checking for codec + * readiness (after insmod) + */ +#ifndef CODEC_WRITE_CHECK_RAF +#define CODEC_WAIT_AFTER_WRITE 100 /* general, static wait after a write + * access to a codec register, may be + * 0 to completely remove wait + */ +#else +#define CODEC_TIMEOUT_AFTER_WRITE 5 /* timeout after a write access to a + * codec register, if RAF bit is used + */ +#endif +#define CODEC_TIMEOUT_AFTER_READ 5 /* timeout after a read access to a + * codec register (checking RAF bit) + */ + +/* Infrastructure for codec register shadowing */ +#define LM4550_REG_DONEREAD (1<<0) /* read register once, value should be the + * same currently in the register + */ +#define LM4550_REG_NOSAVE (1<<1) /* values written to this register will + * not be saved in the register + */ +#define LM4550_REG_NOSHADOW (1<<2) /* don't do register shadowing, use plain + * hardware access + */ +#define LM4550_REG_READONLY (1<<3) /* register is read only */ +#define LM4550_REG_FAKEPROBE (1<<4) /* fake write _and_ read actions during + * probe() correctly + */ +#define LM4550_REG_FAKEREAD (1<<5) /* fake read access, always return default + * value + */ +#define LM4550_REG_ALLFAKE (LM4550_REG_FAKEREAD | LM4550_REG_FAKEPROBE) + +struct lm4550_reg { + u16 reg; + u16 value; + u16 flag; + u16 wmask; + u16 def; +}; + +struct lm4550_reg lm4550_regfile[64] = { + {.reg = 0x00, + .flag = LM4550_REG_NOSAVE | LM4550_REG_FAKEREAD, + .def = 0x0D50}, + {.reg = 0x02, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x9F1F, + .def = 0x8000}, + {.reg = 0x04, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x9F1F, + .def = 0x8000}, + {.reg = 0x06, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x801F, + .def = 0x8000}, + {}, + {.reg = 0x0A, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x801E, + .def = 0x0}, + {.reg = 0x0C, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x801F, + .def = 0x8008}, + {.reg = 0x0E, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x805F, + .def = 0x8008}, + {.reg = 0x10, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x9F1F, + .def = 0x8808}, + {.reg = 0x12, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x9F1F, + .def = 0x8808}, + {.reg = 0x14, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x9F1F, + .def = 0x8808}, + {.reg = 0x16, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x9F1F, + .def = 0x8808}, + {.reg = 0x18, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x9F1F, + .def = 0x8008}, + {.reg = 0x1A, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x707, + .def = 0x0}, + {.reg = 0x1C, + .flag = LM4550_REG_FAKEPROBE, + .wmask = 0x8F0F, + .def = 0x8000}, + {}, + {.reg = 0x20, + .flag = LM4550_REG_FAKEPROBE, + .def = 0x0, + .wmask = 0xA380}, + {.reg = 0x22, + .flag = LM4550_REG_FAKEREAD | LM4550_REG_READONLY, + .def = 0x0101}, + {}, + {.reg = 0x26, + .flag = LM4550_REG_NOSHADOW | LM4550_REG_NOSAVE, + .wmask = 0xFF00}, /* may not write ones to REF/ANL/DAC/ADC bits + * FIXME: Is this ok? + */ + {.reg = 0x28, + .flag = LM4550_REG_FAKEREAD | LM4550_REG_READONLY, + .def = 0x0201}, /* primary codec */ + {.reg = 0x2A, + .flag = LM4550_REG_NOSHADOW | LM4550_REG_NOSAVE, + .wmask = 0x1}, + {.reg = 0x2C, + .flag = LM4550_REG_FAKEPROBE, + .def = 0xBB80, + .wmask = 0xFFFF}, + {}, {}, + {.reg = 0x32, + .flag = LM4550_REG_FAKEPROBE, + .def = 0xBB80, + .wmask = 0xFFFF}, + {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, + {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, + {.reg = 0x7C, + .flag = LM4550_REG_READONLY | LM4550_REG_FAKEREAD, + .def = 0x4E53}, + {.reg = 0x7E, + .flag = LM4550_REG_READONLY | LM4550_REG_FAKEREAD, + .def = 0x4350} +}; + +#define LM4550_RF_OK(reg) ((lm4550_regfile[reg / 2].reg != 0) \ + || (lm4550_regfile[reg / 2].flag != 0)) +#define LM4550_RF_FLAG(reg) lm4550_regfile[reg / 2].flag +#define LM4550_RF_VAL(reg) lm4550_regfile[reg / 2].value +#define LM4550_RF_DEF(reg) lm4550_regfile[reg / 2].def +#define LM4550_RF_WMASK(reg) lm4550_regfile[reg / 2].wmask + +static void lm4550_regfile_init(void) +{ + int i; + for (i = 0; i < 128; i = i + 2) + if (LM4550_RF_FLAG(i) & LM4550_REG_FAKEPROBE) + LM4550_RF_VAL(i) = LM4550_RF_DEF(i); +} + +static void lm4550_regfile_write_values_after_init(struct snd_ac97 *ac97) +{ + int i; + for (i = 0; i < 128; i = i + 2) + if ((LM4550_RF_FLAG(i) & LM4550_REG_FAKEPROBE) && + (LM4550_RF_VAL(i) != LM4550_RF_DEF(i))) { + PDEBUG(CODEC_FAKE, "lm4550_regfile_write_values_after_" + "init(): reg=0x%x value=0x%x / %d is different " + "from def=0x%x / %d\n", + i, LM4550_RF_VAL(i), LM4550_RF_VAL(i), + LM4550_RF_DEF(i), LM4550_RF_DEF(i)); + snd_ac97_write(ac97, i, LM4550_RF_VAL(i)); + LM4550_RF_FLAG(i) |= LM4550_REG_DONEREAD; + } +} + + +/* direct registers */ +#define CR_REG(ml403_ac97cr,x) ((ml403_ac97cr)->port + CR_REG_##x) + +#define CR_REG_PLAYFIFO 0x00 +#define CR_PLAYDATA(a) ((a) & 0xFFFF) + +#define CR_REG_RECFIFO 0x04 +#define CR_RECDATA(a) ((a) & 0xFFFF) + +#define CR_REG_STATUS 0x08 +#define CR_RECOVER (1<<7) +#define CR_PLAYUNDER (1<<6) +#define CR_CODECREADY (1<<5) +#define CR_RAF (1<<4) +#define CR_RECEMPTY (1<<3) +#define CR_RECFULL (1<<2) +#define CR_PLAYHALF (1<<1) +#define CR_PLAYFULL (1<<0) + +#define CR_REG_RESETFIFO 0x0C +#define CR_RECRESET (1<<1) +#define CR_PLAYRESET (1<<0) + +#define CR_REG_CODEC_ADDR 0x10 +/* UG082 says: + * #define CR_CODEC_ADDR(a) ((a) << 1) + * #define CR_CODEC_READ (1<<0) + * #define CR_CODEC_WRITE (0<<0) + */ +/* RefDesign example says: */ +#define CR_CODEC_ADDR(a) ((a) << 0) +#define CR_CODEC_READ (1<<7) +#define CR_CODEC_WRITE (0<<7) + +#define CR_REG_CODEC_DATAREAD 0x14 +#define CR_CODEC_DATAREAD(v) ((v) & 0xFFFF) + +#define CR_REG_CODEC_DATAWRITE 0x18 +#define CR_CODEC_DATAWRITE(v) ((v) & 0xFFFF) + +#define CR_FIFO_SIZE 32 + +struct snd_ml403_ac97cr { + spinlock_t reg_lock; + + int irq; /* for playback */ + int enable_irq; /* for playback */ + + int capture_irq; + int enable_capture_irq; + + struct resource *res_port; + void *port; + + struct snd_ac97 *ac97; + int ac97_fake; +#ifdef CODEC_STAT + int ac97_read; + int ac97_write; +#endif + + struct platform_device *pfdev; + struct snd_card *card; + struct snd_pcm *pcm; + struct snd_pcm_substream *playback_substream; + struct snd_pcm_substream *capture_substream; + + struct snd_pcm_indirect2 ind_rec; /* for playback */ + struct snd_pcm_indirect2 capture_ind2_rec; +}; + +static struct snd_pcm_hardware snd_ml403_ac97cr_playback = { + .info = (SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = SNDRV_PCM_FMTBIT_S16_BE, + .rates = (SNDRV_PCM_RATE_CONTINUOUS | + SNDRV_PCM_RATE_8000_48000 | + SNDRV_PCM_RATE_KNOT), + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_min = CR_FIFO_SIZE/2, + .period_bytes_max = (64*1024), + .periods_min = 2, + .periods_max = (128*1024)/(CR_FIFO_SIZE/2), + .fifo_size = 0, +}; + +static struct snd_pcm_hardware snd_ml403_ac97cr_capture = { + .info = (SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = SNDRV_PCM_FMTBIT_S16_BE, + .rates = (SNDRV_PCM_RATE_CONTINUOUS | + SNDRV_PCM_RATE_8000_48000 | + SNDRV_PCM_RATE_KNOT), + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = (128*1024), + .period_bytes_min = CR_FIFO_SIZE/2, + .period_bytes_max = (64*1024), + .periods_min = 2, + .periods_max = (128*1024)/(CR_FIFO_SIZE/2), + .fifo_size = 0, +}; + +static size_t +snd_ml403_ac97cr_playback_ind2_zero(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + int copied_words = 0; + u32 full = 0; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + + spin_lock(&ml403_ac97cr->reg_lock); + while ((full = (in_be32(CR_REG(ml403_ac97cr, STATUS)) & + CR_PLAYFULL)) != CR_PLAYFULL) { + out_be32(CR_REG(ml403_ac97cr, PLAYFIFO), 0); + copied_words++; + } + rec->hw_ready = 0; + spin_unlock(&ml403_ac97cr->reg_lock); + + return (size_t) (copied_words * 2); +} + +static size_t +snd_ml403_ac97cr_playback_ind2_copy(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec, size_t bytes) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + u16 *src; + int copied_words = 0; + u32 full = 0; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + src = substream->runtime->dma_area + rec->sw_data; + + spin_lock(&ml403_ac97cr->reg_lock); + while (((full = (in_be32(CR_REG(ml403_ac97cr, STATUS)) & + CR_PLAYFULL)) != CR_PLAYFULL) && (bytes > 1)) { + out_be32(CR_REG(ml403_ac97cr, PLAYFIFO), + CR_PLAYDATA(src[copied_words])); + copied_words++; + bytes = bytes - 2; + } + if (full != CR_PLAYFULL) + rec->hw_ready = 1; + else + rec->hw_ready = 0; + spin_unlock(&ml403_ac97cr->reg_lock); + + return (size_t) (copied_words * 2); +} + +static size_t +snd_ml403_ac97cr_capture_ind2_null(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + int copied_words = 0; + u32 empty = 0; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + + spin_lock(&ml403_ac97cr->reg_lock); + while ((empty = (in_be32(CR_REG(ml403_ac97cr, STATUS)) & + CR_RECEMPTY)) != CR_RECEMPTY) { + volatile u32 trash; + + trash = CR_RECDATA(in_be32(CR_REG(ml403_ac97cr, RECFIFO))); + /* Hmmmm, really necessary? */ + ++trash; + copied_words++; + } + rec->hw_ready = 0; + spin_unlock(&ml403_ac97cr->reg_lock); + + return (size_t) (copied_words * 2); +} + +static size_t +snd_ml403_ac97cr_capture_ind2_copy(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec, size_t bytes) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + u16 *dst; + int copied_words = 0; + u32 empty = 0; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + dst = substream->runtime->dma_area + rec->sw_data; + + spin_lock(&ml403_ac97cr->reg_lock); + while (((empty = (in_be32(CR_REG(ml403_ac97cr, STATUS)) & + CR_RECEMPTY)) != CR_RECEMPTY) && (bytes > 1)) { + dst[copied_words] = CR_RECDATA(in_be32(CR_REG(ml403_ac97cr, + RECFIFO))); + copied_words++; + bytes = bytes - 2; + } + if (empty != CR_RECEMPTY) + rec->hw_ready = 1; + else + rec->hw_ready = 0; + spin_unlock(&ml403_ac97cr->reg_lock); + + return (size_t) (copied_words * 2); +} + +static snd_pcm_uframes_t +snd_ml403_ac97cr_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + struct snd_pcm_indirect2 *ind2_rec = NULL; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + + if (substream == ml403_ac97cr->playback_substream) + ind2_rec = &ml403_ac97cr->ind_rec; + if (substream == ml403_ac97cr->capture_substream) + ind2_rec = &ml403_ac97cr->capture_ind2_rec; + + if (ind2_rec != NULL) + return snd_pcm_indirect2_pointer(substream, ind2_rec); + return (snd_pcm_uframes_t) 0; +} + +static int +snd_ml403_ac97cr_pcm_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + int err = 0; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + if (substream == ml403_ac97cr->playback_substream) { + PDEBUG(WORK_INFO, "trigger(playback): START\n"); + ml403_ac97cr->ind_rec.hw_ready = 1; + + /* clear play FIFO */ + out_be32(CR_REG(ml403_ac97cr, RESETFIFO), CR_PLAYRESET); + + /* enable play irq */ + ml403_ac97cr->enable_irq = 1; + enable_irq(ml403_ac97cr->irq); + } + if (substream == ml403_ac97cr->capture_substream) { + PDEBUG(WORK_INFO, "trigger(capture): START\n"); + ml403_ac97cr->capture_ind2_rec.hw_ready = 0; + + /* clear record FIFO */ + out_be32(CR_REG(ml403_ac97cr, RESETFIFO), CR_RECRESET); + + /* enable record irq */ + ml403_ac97cr->enable_capture_irq = 1; + enable_irq(ml403_ac97cr->capture_irq); + } + break; + case SNDRV_PCM_TRIGGER_STOP: + if (substream == ml403_ac97cr->playback_substream) { + PDEBUG(WORK_INFO, "trigger(playback): STOP\n"); + ml403_ac97cr->ind_rec.hw_ready = 0; +#ifdef SND_PCM_INDIRECT2_STAT + snd_pcm_indirect2_stat(substream, + &ml403_ac97cr->ind_rec); +#endif + /* disable play irq */ + disable_irq_nosync(ml403_ac97cr->irq); + ml403_ac97cr->enable_irq = 0; + } + if (substream == ml403_ac97cr->capture_substream) { + PDEBUG(WORK_INFO, "trigger(capture): STOP\n"); + ml403_ac97cr->capture_ind2_rec.hw_ready = 0; +#ifdef SND_PCM_INDIRECT2_STAT + snd_pcm_indirect2_stat(substream, + &ml403_ac97cr->capture_ind2_rec); +#endif + /* disable capture irq */ + disable_irq_nosync(ml403_ac97cr->capture_irq); + ml403_ac97cr->enable_capture_irq = 0; + } + break; + default: + err = -EINVAL; + break; + } + PDEBUG(WORK_INFO, "trigger(): (done)\n"); + return err; +} + +static int snd_ml403_ac97cr_pcm_prepare(struct snd_pcm_substream *substream) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + struct snd_pcm_runtime *runtime; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + runtime = substream->runtime; + + if (substream == ml403_ac97cr->playback_substream) { + PDEBUG(WORK_INFO, + "prepare(): period_bytes=%d, minperiod_bytes=%d\n", + snd_pcm_lib_period_bytes(substream), CR_FIFO_SIZE / 2); + + /* set sampling rate */ + snd_ac97_set_rate(ml403_ac97cr->ac97, AC97_PCM_FRONT_DAC_RATE, + runtime->rate); + PDEBUG(WORK_INFO, "prepare(): rate=%d\n", runtime->rate); + + /* init struct for intermediate buffer */ + memset(&ml403_ac97cr->ind_rec, 0, + sizeof(struct snd_pcm_indirect2)); + ml403_ac97cr->ind_rec.hw_buffer_size = CR_FIFO_SIZE; + ml403_ac97cr->ind_rec.sw_buffer_size = + snd_pcm_lib_buffer_bytes(substream); + ml403_ac97cr->ind_rec.min_periods = -1; + ml403_ac97cr->ind_rec.min_multiple = + snd_pcm_lib_period_bytes(substream) / (CR_FIFO_SIZE / 2); + PDEBUG(WORK_INFO, "prepare(): hw_buffer_size=%d, " + "sw_buffer_size=%d, min_multiple=%d\n", + CR_FIFO_SIZE, ml403_ac97cr->ind_rec.sw_buffer_size, + ml403_ac97cr->ind_rec.min_multiple); + } + if (substream == ml403_ac97cr->capture_substream) { + PDEBUG(WORK_INFO, "prepare(capture): period_bytes=%d, " + "minperiod_bytes=%d\n", + snd_pcm_lib_period_bytes(substream), CR_FIFO_SIZE / 2); + + /* set sampling rate */ + snd_ac97_set_rate(ml403_ac97cr->ac97, AC97_PCM_LR_ADC_RATE, + runtime->rate); + PDEBUG(WORK_INFO, "prepare(capture): rate=%d\n", runtime->rate); + + /* init struct for intermediate buffer */ + memset(&ml403_ac97cr->capture_ind2_rec, 0, + sizeof(struct snd_pcm_indirect2)); + ml403_ac97cr->capture_ind2_rec.hw_buffer_size = CR_FIFO_SIZE; + ml403_ac97cr->capture_ind2_rec.sw_buffer_size = + snd_pcm_lib_buffer_bytes(substream); + ml403_ac97cr->capture_ind2_rec.min_multiple = + snd_pcm_lib_period_bytes(substream) / (CR_FIFO_SIZE / 2); + PDEBUG(WORK_INFO, "prepare(capture): hw_buffer_size=%d, " + "sw_buffer_size=%d, min_multiple=%d\n", CR_FIFO_SIZE, + ml403_ac97cr->capture_ind2_rec.sw_buffer_size, + ml403_ac97cr->capture_ind2_rec.min_multiple); + } + return 0; +} + +static int snd_ml403_ac97cr_hw_free(struct snd_pcm_substream *substream) +{ + PDEBUG(WORK_INFO, "hw_free()\n"); + return snd_pcm_lib_free_pages(substream); +} + +static int +snd_ml403_ac97cr_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + PDEBUG(WORK_INFO, "hw_params(): desired buffer bytes=%d, desired " + "period bytes=%d\n", + params_buffer_bytes(hw_params), params_period_bytes(hw_params)); + /* check period bytes, has to be multiple of CR_FIFO_SIZE / 2, don't + * know if ALSA takes multiples of period_bytes_min _only_ ...?! + */ + if (params_period_bytes(hw_params) % (CR_FIFO_SIZE / 2) != 0) { + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "hw_params(): period bytes (%d) are not a multiple " + "of %d bytes!\n", + params_period_bytes(hw_params), CR_FIFO_SIZE / 2); + return -EINVAL; + } + return snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); +} + +static int snd_ml403_ac97cr_playback_open(struct snd_pcm_substream *substream) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + struct snd_pcm_runtime *runtime; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + runtime = substream->runtime; + + PDEBUG(WORK_INFO, "open(playback)\n"); + ml403_ac97cr->playback_substream = substream; + runtime->hw = snd_ml403_ac97cr_playback; + return 0; +} + +static int snd_ml403_ac97cr_capture_open(struct snd_pcm_substream *substream) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + struct snd_pcm_runtime *runtime; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + runtime = substream->runtime; + + PDEBUG(WORK_INFO, "open(capture)\n"); + ml403_ac97cr->capture_substream = substream; + runtime->hw = snd_ml403_ac97cr_capture; + return 0; +} + +static int snd_ml403_ac97cr_playback_close(struct snd_pcm_substream *substream) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + + PDEBUG(WORK_INFO, "close(playback)\n"); + ml403_ac97cr->playback_substream = NULL; + return 0; +} + +static int snd_ml403_ac97cr_capture_close(struct snd_pcm_substream *substream) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + + ml403_ac97cr = snd_pcm_substream_chip(substream); + + PDEBUG(WORK_INFO, "close(capture)\n"); + ml403_ac97cr->capture_substream = NULL; + return 0; +} + +struct snd_pcm_ops snd_ml403_ac97cr_playback_ops = { + .open = snd_ml403_ac97cr_playback_open, + .close = snd_ml403_ac97cr_playback_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_ml403_ac97cr_hw_params, + .hw_free = snd_ml403_ac97cr_hw_free, + .prepare = snd_ml403_ac97cr_pcm_prepare, + .trigger = snd_ml403_ac97cr_pcm_trigger, + .pointer = snd_ml403_ac97cr_pcm_pointer, +}; + +static struct snd_pcm_ops snd_ml403_ac97cr_capture_ops = { + .open = snd_ml403_ac97cr_capture_open, + .close = snd_ml403_ac97cr_capture_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_ml403_ac97cr_hw_params, + .hw_free = snd_ml403_ac97cr_hw_free, + .prepare = snd_ml403_ac97cr_pcm_prepare, + .trigger = snd_ml403_ac97cr_pcm_trigger, + .pointer = snd_ml403_ac97cr_pcm_pointer, +}; + +irqreturn_t snd_ml403_ac97cr_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + struct platform_device *pfdev; + int cmp_irq; + + if ((ml403_ac97cr = (struct snd_ml403_ac97cr *)dev_id) == NULL) + return IRQ_NONE; + + pfdev = ml403_ac97cr->pfdev; + + /* playback interrupt */ + cmp_irq = platform_get_irq(pfdev, 0); + if (irq == cmp_irq) { + if (ml403_ac97cr->enable_irq) { + snd_pcm_indirect2_playback_interrupt( + ml403_ac97cr->playback_substream, + &ml403_ac97cr->ind_rec, + snd_ml403_ac97cr_playback_ind2_copy, + snd_ml403_ac97cr_playback_ind2_zero); + } else + goto __disable_irq; + } else { + /* record interrupt */ + cmp_irq = platform_get_irq(pfdev, 1); + if (irq == cmp_irq) { + if (ml403_ac97cr->enable_capture_irq) { + snd_pcm_indirect2_capture_interrupt( + ml403_ac97cr->capture_substream, + &ml403_ac97cr->capture_ind2_rec, + snd_ml403_ac97cr_capture_ind2_copy, + snd_ml403_ac97cr_capture_ind2_null); + } else { + goto __disable_irq; + } + } else { + return IRQ_NONE; + } + } + return IRQ_HANDLED; + + __disable_irq: + PDEBUG(INIT_INFO, "irq(): irq %d is meant to be disabled! So, now try " + "to disable it _really_!\n", irq); + disable_irq_nosync(irq); + return IRQ_HANDLED; +} + +static unsigned short +snd_ml403_ac97cr_codec_read(struct snd_ac97 *ac97, unsigned short reg) +{ + struct snd_ml403_ac97cr *ml403_ac97cr = ac97->private_data; +#ifdef CODEC_STAT + u32 stat, rafaccess = 0; +#endif + unsigned long end_time; + u16 value = 0; + + if (!LM4550_RF_OK(reg)) { + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "access to unknown/unused codec register 0x%x " + "ignored!\n", reg); + return 0; + } + /* check if we can fake/answer this access from our shadow register */ + if ((LM4550_RF_FLAG(reg) & + (LM4550_REG_DONEREAD | LM4550_REG_ALLFAKE)) && + !(LM4550_RF_FLAG(reg) & LM4550_REG_NOSHADOW)) { + if (LM4550_RF_FLAG(reg) & LM4550_REG_FAKEREAD) { + PDEBUG(CODEC_FAKE, "codec_read(): faking read from " + "reg=0x%x, val=0x%x / %d\n", + reg, LM4550_RF_DEF(reg), LM4550_RF_DEF(reg)); + return LM4550_RF_DEF(reg); + } else if ((LM4550_RF_FLAG(reg) & LM4550_REG_FAKEPROBE) && + ml403_ac97cr->ac97_fake) { + PDEBUG(CODEC_FAKE, "codec_read(): faking read from " + "reg=0x%x, val=0x%x / %d (probe)\n", + reg, LM4550_RF_VAL(reg), LM4550_RF_VAL(reg)); + return LM4550_RF_VAL(reg); + } else { +#ifdef CODEC_STAT + PDEBUG(CODEC_FAKE, "codec_read(): read access " + "answered by shadow register 0x%x (value=0x%x " + "/ %d) (cw=%d cr=%d)\n", + reg, LM4550_RF_VAL(reg), LM4550_RF_VAL(reg), + ml403_ac97cr->ac97_write, + ml403_ac97cr->ac97_read); +#else + PDEBUG(CODEC_FAKE, "codec_read(): read access " + "answered by shadow register 0x%x (value=0x%x " + "/ %d)\n", + reg, LM4550_RF_VAL(reg), LM4550_RF_VAL(reg)); +#endif + return LM4550_RF_VAL(reg); + } + } + /* if we are here, we _have_ to access the codec really, no faking */ + spin_lock(&ml403_ac97cr->reg_lock); +#ifdef CODEC_STAT + ml403_ac97cr->ac97_read++; +#endif + out_be32(CR_REG(ml403_ac97cr, CODEC_ADDR), + CR_CODEC_ADDR(reg) | CR_CODEC_READ); + end_time = jiffies + (HZ / CODEC_TIMEOUT_AFTER_READ); + do { +#ifdef CODEC_STAT + rafaccess++; + if (((stat = in_be32(CR_REG(ml403_ac97cr, STATUS))) & + CR_RAF) == CR_RAF) { + value = CR_CODEC_DATAREAD( + in_be32(CR_REG(ml403_ac97cr, CODEC_DATAREAD))); + PDEBUG(CODEC_SUCCESS, "codec_read(): (done) reg=0x%x, " + "value=0x%x / %d (STATUS=0x%x)\n", + reg, value, value, stat); +#else + if ((in_be32(CR_REG(ml403_ac97cr, STATUS)) & + CR_RAF) == CR_RAF) { + value = CR_CODEC_DATAREAD( + in_be32(CR_REG(ml403_ac97cr, CODEC_DATAREAD))); + PDEBUG(CODEC_SUCCESS, "codec_read(): (done) " + "reg=0x%x, value=0x%x / %d\n", + reg, value, value); +#endif + lm4550_regfile[reg / 2].value = value; + lm4550_regfile[reg / 2].flag |= LM4550_REG_DONEREAD; + spin_unlock(&ml403_ac97cr->reg_lock); + return value; + } + schedule_timeout_uninterruptible(1); + } while (time_after(end_time, jiffies)); + value = + CR_CODEC_DATAREAD(in_be32(CR_REG(ml403_ac97cr, CODEC_DATAREAD))); +#ifdef CODEC_STAT + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "timeout while codec read! " + "(reg=0x%x, last STATUS=0x%x, DATAREAD=0x%x / %d, %d) " + "(cw=%d, cr=%d)\n", + reg, stat, value, value, rafaccess, ml403_ac97cr->ac97_write, + ml403_ac97cr->ac97_read); +#else + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "timeout while codec read! (reg=0x%x, DATAREAD=0x%x / %d)\n", + reg, value, value); +#endif + /* BUG: This is PURE speculation! But after _most_ read timeouts the + * value in the register is ok! + */ + lm4550_regfile[reg / 2].value = value; + lm4550_regfile[reg / 2].flag |= LM4550_REG_DONEREAD; + spin_unlock(&ml403_ac97cr->reg_lock); + return value; +} + +static void +snd_ml403_ac97cr_codec_write(struct snd_ac97 *ac97, unsigned short reg, + unsigned short val) +{ + struct snd_ml403_ac97cr *ml403_ac97cr = ac97->private_data; + +#ifdef CODEC_STAT + u32 stat, rafaccess = 0; +#endif +#ifdef CODEC_WRITE_CHECK_RAF + unsigned long end_time; +#endif + + if (!LM4550_RF_OK(reg)) { + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "access to unknown/unused codec register 0x%x " + "ignored!\n", reg); + return; + } + if (LM4550_RF_FLAG(reg) & LM4550_REG_READONLY) { + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "write access to read only codec register 0x%x " + "ignored!\n", reg); + return; + } + if ((val & LM4550_RF_WMASK(reg)) != val) { + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "write access to codec register 0x%x with bad value " + "0x%x / %d!\n", + reg, val, val); + val = val & LM4550_RF_WMASK(reg); + } + if (((LM4550_RF_FLAG(reg) & LM4550_REG_FAKEPROBE) && + ml403_ac97cr->ac97_fake) && + !(LM4550_RF_FLAG(reg) & LM4550_REG_NOSHADOW)) { + PDEBUG(CODEC_FAKE, "codec_write(): faking write to reg=0x%x, " + "val=0x%x / %d\n", reg, val, val); + LM4550_RF_VAL(reg) = (val & LM4550_RF_WMASK(reg)); + return; + } + spin_lock(&ml403_ac97cr->reg_lock); +#ifdef CODEC_STAT + ml403_ac97cr->ac97_write++; +#endif + out_be32(CR_REG(ml403_ac97cr, CODEC_DATAWRITE), + CR_CODEC_DATAWRITE(val)); + out_be32(CR_REG(ml403_ac97cr, CODEC_ADDR), + CR_CODEC_ADDR(reg) | CR_CODEC_WRITE); +#ifdef CODEC_WRITE_CHECK_RAF + /* check CR_CODEC_RAF bit to see if write access to register is done; + * loop until bit is set or timeout happens + */ + end_time = jiffies + HZ / CODEC_TIMEOUT_AFTER_WRITE; + do { +#ifdef CODEC_STAT + rafaccess++; + if (((stat = in_be32(CR_REG(ml403_ac97cr, STATUS))) & + CR_RAF) == CR_RAF) { +#else + if ((in_be32(CR_REG(ml403_ac97cr, STATUS)) & + CR_RAF) == CR_RAF) { +#endif + PDEBUG(CODEC_SUCCESS, "codec_write(): (done) reg=0x%x, " + "value=%d / 0x%x\n", reg, val, val); + if (!(LM4550_RF_FLAG(reg) & LM4550_REG_NOSHADOW) && + !(LM4550_RF_FLAG(reg) & LM4550_REG_NOSAVE)) + lm4550_regfile[reg / 2].value = val; + lm4550_regfile[reg / 2].flag |= LM4550_REG_DONEREAD; + spin_unlock(&ml403_ac97cr->reg_lock); + return; + } + schedule_timeout_uninterruptible(1); + } while (time_after(end_time, jiffies)); +#ifdef CODEC_STAT + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "timeout while codec write " + "(reg=0x%x, val=0x%x / %d, last STATUS=0x%x, %d) " + "(cw=%d, cr=%d)\n", + reg, val, val, stat, rafaccess, ml403_ac97cr->ac97_write, + ml403_ac97cr->ac97_read); +#else + snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": " + "timeout while codec write (reg=0x%x, val=0x%x / %d)\n", + reg, val, val); +#endif +#else /* CODEC_WRITE_CHECK_RAF */ +#if CODEC_WAIT_AFTER_WRITE > 0 + /* officially, in AC97 spec there is no possibility for a AC97 + * controller to determine, if write access is done or not - so: How + * is Xilinx able to provide a RAF bit for write access? + * => very strange, thus just don't check RAF bit (compare with + * Xilinx's example app in EDK 8.1i) and wait + */ + schedule_timeout_uninterruptible(HZ / CODEC_WAIT_AFTER_WRITE); +#endif + PDEBUG(CODEC_SUCCESS, "codec_write(): (done) reg=0x%x, value=%d / 0x%x " + "(no RAF check)\n", + reg, val, val); +#endif + spin_unlock(&ml403_ac97cr->reg_lock); + return; +} + +static int snd_ml403_ac97cr_chip_init(struct snd_ml403_ac97cr *ml403_ac97cr) +{ + unsigned long end_time; + PDEBUG(INIT_INFO, "chip_init():\n"); + end_time = jiffies + HZ / CODEC_TIMEOUT_ON_INIT; + do { + if (in_be32(CR_REG(ml403_ac97cr, STATUS)) & CR_CODECREADY) { + /* clear both hardware FIFOs */ + out_be32(CR_REG(ml403_ac97cr, RESETFIFO), + CR_RECRESET | CR_PLAYRESET); + PDEBUG(INIT_INFO, "chip_init(): (done)\n"); + return 0; + } + schedule_timeout_uninterruptible(1); + } while (time_after(end_time, jiffies)); + snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": " + "timeout while waiting for codec, " + "not ready!\n"); + return -EBUSY; +} + +static int snd_ml403_ac97cr_free(struct snd_ml403_ac97cr *ml403_ac97cr) +{ + PDEBUG(INIT_INFO, "free():\n"); + /* irq release */ + if (ml403_ac97cr->irq >= 0) + free_irq(ml403_ac97cr->irq, ml403_ac97cr); + if (ml403_ac97cr->capture_irq >= 0) + free_irq(ml403_ac97cr->capture_irq, ml403_ac97cr); + /* give back "port" */ + if (ml403_ac97cr->port != NULL) + iounmap(ml403_ac97cr->port); + kfree(ml403_ac97cr); + PDEBUG(INIT_INFO, "free(): (done)\n"); + return 0; +} + +static int snd_ml403_ac97cr_dev_free(struct snd_device *snddev) +{ + struct snd_ml403_ac97cr *ml403_ac97cr = snddev->device_data; + PDEBUG(INIT_INFO, "dev_free():\n"); + return snd_ml403_ac97cr_free(ml403_ac97cr); +} + +static int __init +snd_ml403_ac97cr_create(struct snd_card *card, struct platform_device *pfdev, + struct snd_ml403_ac97cr **rml403_ac97cr) +{ + struct snd_ml403_ac97cr *ml403_ac97cr; + int err; + static struct snd_device_ops ops = { + .dev_free = snd_ml403_ac97cr_dev_free, + }; + struct resource *resource; + int irq; + + *rml403_ac97cr = NULL; + ml403_ac97cr = kzalloc(sizeof(*ml403_ac97cr), GFP_KERNEL); + if (ml403_ac97cr == NULL) { + return -ENOMEM; + } + spin_lock_init(&ml403_ac97cr->reg_lock); + ml403_ac97cr->card = card; + ml403_ac97cr->pfdev = pfdev; + ml403_ac97cr->irq = -1; + ml403_ac97cr->enable_irq = 0; + ml403_ac97cr->capture_irq = -1; + ml403_ac97cr->enable_capture_irq = 0; + ml403_ac97cr->port = NULL; + ml403_ac97cr->res_port = NULL; + + PDEBUG(INIT_INFO, "Trying to reserve resources now ...\n"); + resource = platform_get_resource(pfdev, IORESOURCE_MEM, 0); + /* get "port" */ + ml403_ac97cr->port = ioremap_nocache(resource->start, + (resource->end) - + (resource->start) + 1); + if (ml403_ac97cr->port == NULL) { + snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": " + "unable to remap memory region (%x to %x)\n", + resource->start, resource->end); + snd_ml403_ac97cr_free(ml403_ac97cr); + return -EBUSY; + } + snd_printk(KERN_INFO SND_ML403_AC97CR_DRIVER ": " + "remap controller memory region to " + "0x%x done\n", (unsigned int)ml403_ac97cr->port); + /* get irq */ + irq = platform_get_irq(pfdev, 0); + if (request_irq(irq, snd_ml403_ac97cr_irq, IRQF_DISABLED, + pfdev->dev.bus_id, (void *)ml403_ac97cr)) { + snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": " + "unable to grab IRQ %d\n", + irq); + snd_ml403_ac97cr_free(ml403_ac97cr); + return -EBUSY; + } + ml403_ac97cr->irq = irq; + snd_printk(KERN_INFO SND_ML403_AC97CR_DRIVER ": " + "request (playback) irq %d done\n", + ml403_ac97cr->irq); + irq = platform_get_irq(pfdev, 1); + if (request_irq(irq, snd_ml403_ac97cr_irq, IRQF_DISABLED, + pfdev->dev.bus_id, (void *)ml403_ac97cr)) { + snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": " + "unable to grab IRQ %d\n", + irq); + snd_ml403_ac97cr_free(ml403_ac97cr); + return -EBUSY; + } + ml403_ac97cr->capture_irq = irq; + snd_printk(KERN_INFO SND_ML403_AC97CR_DRIVER ": " + "request (capture) irq %d done\n", + ml403_ac97cr->capture_irq); + + if ((err = snd_ml403_ac97cr_chip_init(ml403_ac97cr)) < 0) { + snd_ml403_ac97cr_free(ml403_ac97cr); + return err; + } + + err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, ml403_ac97cr, &ops); + if (err < 0) { + PDEBUG(INIT_FAILURE, "probe(): snd_device_new() failed!\n"); + snd_ml403_ac97cr_free(ml403_ac97cr); + return err; + } + + snd_card_set_dev(card, &pfdev->dev); + + *rml403_ac97cr = ml403_ac97cr; + return 0; +} + +static void snd_ml403_ac97cr_mixer_free(struct snd_ac97 *ac97) +{ + struct snd_ml403_ac97cr *ml403_ac97cr = ac97->private_data; + PDEBUG(INIT_INFO, "mixer_free():\n"); + ml403_ac97cr->ac97 = NULL; + PDEBUG(INIT_INFO, "mixer_free(): (done)\n"); +} + +static int __init snd_ml403_ac97cr_mixer(struct snd_ml403_ac97cr *ml403_ac97cr) +{ + struct snd_ac97_bus *bus; + struct snd_ac97_template ac97; + int err; + static struct snd_ac97_bus_ops ops = { + .write = snd_ml403_ac97cr_codec_write, + .read = snd_ml403_ac97cr_codec_read, + }; + PDEBUG(INIT_INFO, "mixer():\n"); + if ((err = snd_ac97_bus(ml403_ac97cr->card, 0, &ops, NULL, &bus)) < 0) + return err; + + memset(&ac97, 0, sizeof(ac97)); + ml403_ac97cr->ac97_fake = 1; + lm4550_regfile_init(); +#ifdef CODEC_STAT + ml403_ac97cr->ac97_read = 0; + ml403_ac97cr->ac97_write = 0; +#endif + ac97.private_data = ml403_ac97cr; + ac97.private_free = snd_ml403_ac97cr_mixer_free; + ac97.scaps = AC97_SCAP_AUDIO | AC97_SCAP_SKIP_MODEM | + AC97_SCAP_NO_SPDIF; + err = snd_ac97_mixer(bus, &ac97, &ml403_ac97cr->ac97); + ml403_ac97cr->ac97_fake = 0; + lm4550_regfile_write_values_after_init(ml403_ac97cr->ac97); + PDEBUG(INIT_INFO, "mixer(): (done) snd_ac97_mixer()=%d\n", err); + return err; +} + +static int __init +snd_ml403_ac97cr_pcm(struct snd_ml403_ac97cr *ml403_ac97cr, int device, + struct snd_pcm **rpcm) +{ + struct snd_pcm *pcm; + int err; + + if (rpcm) + *rpcm = NULL; + if ((err = snd_pcm_new(ml403_ac97cr->card, "ML403AC97CR/1", device, 1, + 1, &pcm)) < 0) + return err; + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, + &snd_ml403_ac97cr_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, + &snd_ml403_ac97cr_capture_ops); + pcm->private_data = ml403_ac97cr; + pcm->info_flags = 0; + strcpy(pcm->name, "ML403AC97CR DAC/ADC"); + ml403_ac97cr->pcm = pcm; + + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, + snd_dma_continuous_data(GFP_KERNEL), + 64 * 1024, + 128 * 1024); + if (rpcm) + *rpcm = pcm; + return 0; +} + +static int __init snd_ml403_ac97cr_probe(struct platform_device *pfdev) +{ + struct snd_card *card; + struct snd_ml403_ac97cr *ml403_ac97cr = NULL; + int err; + int dev = pfdev->id; + + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) + return -ENOENT; + + card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); + if (card == NULL) + return -ENOMEM; + if ((err = snd_ml403_ac97cr_create(card, pfdev, &ml403_ac97cr)) < 0) { + PDEBUG(INIT_FAILURE, "probe(): create failed!\n"); + snd_card_free(card); + return err; + } + PDEBUG(INIT_INFO, "probe(): create done\n"); + card->private_data = ml403_ac97cr; + if ((err = snd_ml403_ac97cr_mixer(ml403_ac97cr)) < 0) { + snd_card_free(card); + return err; + } + PDEBUG(INIT_INFO, "probe(): mixer done\n"); + if ((err = snd_ml403_ac97cr_pcm(ml403_ac97cr, 0, NULL)) < 0) { + snd_card_free(card); + return err; + } + PDEBUG(INIT_INFO, "probe(): PCM done\n"); + strcpy(card->driver, SND_ML403_AC97CR_DRIVER); + strcpy(card->shortname, "ML403 AC97 Controller Reference"); + sprintf(card->longname, "%s %s at 0x%lx, irq %i & %i, device %i", + card->shortname, card->driver, + (unsigned long)ml403_ac97cr->port, ml403_ac97cr->irq, + ml403_ac97cr->capture_irq, dev + 1); + + if ((err = snd_card_register(card)) < 0) { + snd_card_free(card); + return err; + } + platform_set_drvdata(pfdev, card); + PDEBUG(INIT_INFO, "probe(): (done)\n"); + return 0; +} + +static int snd_ml403_ac97cr_remove(struct platform_device *pfdev) +{ + snd_card_free(platform_get_drvdata(pfdev)); + platform_set_drvdata(pfdev, NULL); + return 0; +} + +static struct platform_driver snd_ml403_ac97cr_driver = { + .probe = snd_ml403_ac97cr_probe, + .remove = snd_ml403_ac97cr_remove, + .driver = { + .name = SND_ML403_AC97CR_DRIVER, + }, +}; + +static int __init alsa_card_ml403_ac97cr_init(void) +{ + return platform_driver_register(&snd_ml403_ac97cr_driver); +} + +static void __exit alsa_card_ml403_ac97cr_exit(void) +{ + platform_driver_unregister(&snd_ml403_ac97cr_driver); +} + +module_init(alsa_card_ml403_ac97cr_init) +module_exit(alsa_card_ml403_ac97cr_exit) diff --git a/sound/ppc/pcm-indirect2.h b/sound/ppc/pcm-indirect2.h new file mode 100644 index 0000000..c7fe74f --- /dev/null +++ b/sound/ppc/pcm-indirect2.h @@ -0,0 +1,658 @@ +/* + * Helper functions for indirect PCM data transfer to a simple FIFO in + * hardware (small, no possibility to read "hardware io position", + * updating position done by interrupt, ...) + * + * Copyright (c) by 2007 Joachim Foerster <JOFT(a)gmx.de> + * + * Based on "pcm-indirect.h" (alsa-driver-1.0.13) by + * + * Copyright (c) by Takashi Iwai <tiwai(a)suse.de> + * Jaroslav Kysela <perex(a)suse.cz> + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __SOUND_PCM_INDIRECT2_H +#define __SOUND_PCM_INDIRECT2_H + +#include <sound/core.h> +#include <sound/pcm.h> + +/* jiffies */ +#include <linux/jiffies.h> + +struct snd_pcm_indirect2 { + unsigned int hw_buffer_size; /* Byte size of hardware buffer */ + int hw_ready; /* playback: 1 = hw fifo has room left, + * 0 = hw fifo is full + */ + unsigned int min_multiple; + int min_periods; /* counts number of min. periods until + * min_multiple is reached + */ + int min_period_count; /* counts bytes to count number of + * min. periods + */ + + unsigned int sw_buffer_size; /* Byte size of software buffer */ + + /* sw_data: position in intermediate buffer, where we will read (or + * write) from/to next time (to transfer data to/from HW) + */ + unsigned int sw_data; /* Offset to next dst (or src) in sw + * ring buffer + */ + /* easiest case (playback): + * sw_data is nearly the same as ~ runtime->control->appl_ptr, with the + * exception that sw_data is "behind" by the number if bytes ALSA wrote + * to the intermediate buffer last time. + * A call to ack() callback synchronizes both indirectly. + */ + + /* We have no real sw_io pointer here. Usually sw_io is pointing to the + * current playback/capture position _inside_ the hardware. Devices + * with plain FIFOs often have no possibility to publish this position. + * So we say: if sw_data is updated, that means bytes were copied to + * the hardware, we increase sw_io by that amount, because there have + * to be as much bytes which were played. So sw_io will stay behind + * sw_data all the time and has to converge to sw_data at the end of + * playback. + */ + unsigned int sw_io; /* Current software pointer in bytes */ + + /* sw_ready: number of bytes ALSA copied to the intermediate buffer, so + * it represents the number of bytes which wait for transfer to the HW + */ + int sw_ready; /* Bytes ready to be transferred to/from hw */ + + /* appl_ptr: last known position of ALSA (where ALSA is going to write + * next time into the intermediate buffer + */ + snd_pcm_uframes_t appl_ptr; /* Last seen appl_ptr */ + + unsigned int bytes2hw; + int check_alignment; + +#ifdef SND_PCM_INDIRECT2_STAT + unsigned int zeros2hw; + unsigned int mul_elapsed; + unsigned int mul_elapsed_real; + unsigned long firstbytetime; + unsigned long lastbytetime; + unsigned long firstzerotime; + unsigned int byte_sizes[64]; + unsigned int zero_sizes[64]; + unsigned int min_adds[8]; + unsigned int mul_adds[8]; + unsigned int zero_times[3750]; /* = 15s */ + unsigned int zero_times_saved; + unsigned int zero_times_notsaved; + unsigned int irq_occured; + unsigned int pointer_calls; + unsigned int lastdifftime; +#endif +}; + +typedef size_t(*snd_pcm_indirect2_copy_t) (struct snd_pcm_substream * substream, + struct snd_pcm_indirect2 * rec, + size_t bytes); +typedef size_t(*snd_pcm_indirect2_zero_t) (struct snd_pcm_substream * substream, + struct snd_pcm_indirect2 * rec); + +#ifdef SND_PCM_INDIRECT2_STAT +static inline void snd_pcm_indirect2_stat(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + int i, j, k; + int seconds = (rec->lastbytetime - rec->firstbytetime) / HZ; + + snd_printk(KERN_DEBUG "STAT: mul_elapsed: %u, mul_elapsed_real: %d, " + "irq_occured: %d\n", + rec->mul_elapsed, rec->mul_elapsed_real, rec->irq_occured); + snd_printk(KERN_DEBUG "STAT: min_multiple: %d (irqs/period)\n", + rec->min_multiple); + snd_printk(KERN_DEBUG "STAT: firstbytetime: %lu, lastbytetime: %lu, " + "firstzerotime: %lu\n", + rec->firstbytetime, rec->lastbytetime, rec->firstzerotime); + snd_printk(KERN_DEBUG "STAT: bytes2hw: %u Bytes => (by runtime->rate) " + "length: %d s\n", + rec->bytes2hw, rec->bytes2hw / 2 / 2 / runtime->rate); + snd_printk(KERN_DEBUG "STAT: (by measurement) length: %d => " + "rate: %d Bytes/s = %d Frames/s|Hz\n", + seconds, rec->bytes2hw / seconds, + rec->bytes2hw / 2 / 2 / seconds); + snd_printk(KERN_DEBUG + "STAT: zeros2hw: %u = %d ms ~ %d * %d zero copies\n", + rec->zeros2hw, ((rec->zeros2hw / 2 / 2) * 1000) / + runtime->rate, + rec->zeros2hw / (rec->hw_buffer_size / 2), + (rec->hw_buffer_size / 2)); + snd_printk(KERN_DEBUG "STAT: pointer_calls: %u, lastdifftime: %u\n", + rec->pointer_calls, rec->lastdifftime); + snd_printk(KERN_DEBUG "STAT: sw_io: %d, sw_data: %d\n", rec->sw_io, + rec->sw_data); + snd_printk(KERN_DEBUG "STAT: byte_sizes[]:\n"); + k = 0; + for (j = 0; j < 8; j++) { + for (i = j * 8; i < (j + 1) * 8; i++) + if (rec->byte_sizes[i] != 0) { + snd_printk(KERN_DEBUG "%u: %u", + i, rec->byte_sizes[i]); + k++; + } + if (((k % 8) == 0) && (k != 0)) { + snd_printk(KERN_DEBUG "\n"); + k = 0; + } + } + snd_printk(KERN_DEBUG "\n"); + snd_printk(KERN_DEBUG "STAT: zero_sizes[]:\n"); + for (j = 0; j < 8; j++) { + k = 0; + for (i = j * 8; i < (j + 1) * 8; i++) + if (rec->zero_sizes[i] != 0) + snd_printk(KERN_DEBUG "%u: %u", + i, rec->zero_sizes[i]); + else + k++; + if (!k) + snd_printk(KERN_DEBUG "\n"); + } + snd_printk(KERN_DEBUG "\n"); + snd_printk(KERN_DEBUG "STAT: min_adds[]:\n"); + for (j = 0; j < 8; j++) { + if (rec->min_adds[j] != 0) + snd_printk(KERN_DEBUG "%u: %u", j, rec->min_adds[j]); + } + snd_printk(KERN_DEBUG "\n"); + snd_printk(KERN_DEBUG "STAT: mul_adds[]:\n"); + for (j = 0; j < 8; j++) { + if (rec->mul_adds[j] != 0) + snd_printk(KERN_DEBUG "%u: %u", j, rec->mul_adds[j]); + } + snd_printk(KERN_DEBUG "\n"); + snd_printk(KERN_DEBUG + "STAT: zero_times_saved: %d, zero_times_notsaved: %d\n", + rec->zero_times_saved, rec->zero_times_notsaved); + /* snd_printk(KERN_DEBUG "STAT: zero_times[]\n"); + i = 0; + for (j = 0; j < 3750; j++) { + if (rec->zero_times[j] != 0) { + snd_printk(KERN_DEBUG "%u: %u", j, rec->zero_times[j]); + i++; + } + if (((i % 8) == 0) && (i != 0)) + snd_printk(KERN_DEBUG "\n"); + } + snd_printk(KERN_DEBUG "\n"); */ + return; +} +#endif + +/* + * _internal_ helper function for playback/capture transfer function + */ +static inline void +snd_pcm_indirect2_increase_min_periods(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec, + int isplay, int iscopy, + unsigned int bytes) +{ + if (rec->min_periods >= 0) { + if (iscopy) { + rec->sw_io += bytes; + if (rec->sw_io >= rec->sw_buffer_size) + rec->sw_io -= rec->sw_buffer_size; + } else if (isplay) { + /* If application does not write data in multiples of + * a period, move sw_data to the next correctly aligned + * position, so that sw_io can converge to it (in the + * next step). + */ + if (!rec->check_alignment) { + if (rec->bytes2hw % + snd_pcm_lib_period_bytes(substream)) { + unsigned bytes2hw_aligned = + (1 + + (rec->bytes2hw / + snd_pcm_lib_period_bytes + (substream))) * + snd_pcm_lib_period_bytes(substream); + rec->sw_data = + bytes2hw_aligned % + rec->sw_buffer_size; +#ifdef SND_PCM_INDIRECT2_STAT + snd_printk(KERN_DEBUG + "STAT: @re-align: aligned " + "bytes2hw to next period " + "size boundary: %d " + "(instead of %d)\n", + bytes2hw_aligned, + rec->bytes2hw); + snd_printk(KERN_DEBUG + "STAT: @re-align: sw_data " + "moves to: %d\n", + rec->sw_data); +#endif + } + rec->check_alignment = 1; + } + /* We are at the end and are copying zero into the fifo. + * Now, we have to make sure that sw_io is increased + * until the position of sw_data: Filling the fifo with + * the first zeros means, the last bytes were played. + */ + if (rec->sw_io != rec->sw_data) { + unsigned int diff; + if (rec->sw_data > rec->sw_io) + diff = rec->sw_data - rec->sw_io; + else + diff = + (rec->sw_buffer_size - rec->sw_io) + + rec->sw_data; + if (bytes >= diff) + rec->sw_io = rec->sw_data; + else { + rec->sw_io += bytes; + if (rec->sw_io >= rec->sw_buffer_size) + rec->sw_io -= + rec->sw_buffer_size; + } + } + } + rec->min_period_count += bytes; + if (rec->min_period_count >= (rec->hw_buffer_size / 2)) { + rec->min_periods += + (rec->min_period_count / (rec->hw_buffer_size / 2)); +#ifdef SND_PCM_INDIRECT2_STAT + if ((rec->min_period_count / + (rec->hw_buffer_size / 2)) > 7) + snd_printk(KERN_DEBUG + "STAT: more than 7 (%d) min_adds at " + "once - too big to save!\n", + (rec->min_period_count / + (rec->hw_buffer_size / 2))); + else + rec->min_adds[(rec->min_period_count / + (rec->hw_buffer_size / 2))]++; +#endif + rec->min_period_count = + (rec->min_period_count % (rec->hw_buffer_size / 2)); + } + } else if (isplay && iscopy) + rec->min_periods = 0; +} + +/* + * helper function for playback/capture pointer callback + */ +static inline snd_pcm_uframes_t +snd_pcm_indirect2_pointer(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec) +{ +#ifdef SND_PCM_INDIRECT2_STAT + rec->pointer_calls++; +#endif + return bytes_to_frames(substream->runtime, rec->sw_io); +} + +/* + * helper function for playback ack callback + */ +static inline void +snd_pcm_indirect2_playback_transfer(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec, + snd_pcm_indirect2_copy_t copy, + snd_pcm_indirect2_zero_t zero) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_uframes_t appl_ptr = runtime->control->appl_ptr; + + /* runtime->control->appl_ptr: position where ALSA will write next time + * rec->appl_ptr: position where ALSA was last time + * diff: obviously ALSA wrote that much bytes into the intermediate + * buffer since we checked last time + */ + snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr; + + if (diff) { +#ifdef SND_PCM_INDIRECT2_STAT + rec->lastdifftime = jiffies; +#endif + if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2)) + diff += runtime->boundary; + /* number of bytes "added" by ALSA increases the number of bytes + * which are ready to "be transfered to HW"/"played" + * Then, set rec->appl_ptr to not count bytes twice next time. + */ + rec->sw_ready += (int)frames_to_bytes(runtime, diff); + rec->appl_ptr = appl_ptr; + } + if (rec->hw_ready && (rec->sw_ready <= 0)) { + unsigned int bytes; + +#ifdef SND_PCM_INDIRECT2_STAT + if (rec->firstzerotime == 0) { + rec->firstzerotime = jiffies; + snd_printk(KERN_DEBUG + "STAT: @firstzerotime: mul_elapsed: %d, " + "min_period_count: %d\n", + rec->mul_elapsed, rec->min_period_count); + snd_printk(KERN_DEBUG + "STAT: @firstzerotime: sw_io: %d, " + "sw_data: %d, appl_ptr: %u\n", + rec->sw_io, rec->sw_data, + (unsigned int)appl_ptr); + } + if ((jiffies - rec->firstzerotime) < 3750) { + rec->zero_times[(jiffies - rec->firstzerotime)]++; + rec->zero_times_saved++; + } else + rec->zero_times_notsaved++; +#endif + bytes = zero(substream, rec); + +#ifdef SND_PCM_INDIRECT2_STAT + rec->zeros2hw += bytes; + if (bytes < 64) + rec->zero_sizes[bytes]++; + else + snd_printk(KERN_DEBUG + "STAT: %d zero Bytes copied to hardware at " + "once - too big to save!\n", + bytes); +#endif + snd_pcm_indirect2_increase_min_periods(substream, rec, 1, 0, + bytes); + return; + } + while (rec->hw_ready && (rec->sw_ready > 0)) { + /* sw_to_end: max. number of bytes that can be read/take from + * the current position (sw_data) in _one_ step + */ + unsigned int sw_to_end = rec->sw_buffer_size - rec->sw_data; + + /* bytes: number of bytes we have available (for reading) */ + unsigned int bytes = rec->sw_ready; + + if (sw_to_end < bytes) { + bytes = sw_to_end; + } + if (!bytes) + break; + +#ifdef SND_PCM_INDIRECT2_STAT + if (rec->firstbytetime == 0) + rec->firstbytetime = jiffies; + rec->lastbytetime = jiffies; +#endif + /* copy bytes from intermediate buffer position sw_data to the + * HW and return number of bytes actually written + * Furthermore, set hw_ready to 0, if the fifo isn't empty + * now => more could be transfered to fifo + */ + bytes = copy(substream, rec, bytes); + rec->bytes2hw += bytes; + +#ifdef SND_PCM_INDIRECT2_STAT + if (bytes < 64) + rec->byte_sizes[bytes]++; + else + snd_printk(KERN_DEBUG + "STAT: %d Bytes copied to hardware at once " + "- too big to save!\n", + bytes); +#endif + /* increase sw_data by the number of actually written bytes + * (= number of taken bytes from intermediate buffer) + */ + rec->sw_data += bytes; + if (rec->sw_data == rec->sw_buffer_size) + rec->sw_data = 0; + /* now sw_data is the position where ALSA is going to write + * in the intermediate buffer next time = position we are going + * to read from next time + */ + + snd_pcm_indirect2_increase_min_periods(substream, rec, 1, 1, + bytes); + + /* we read bytes from intermediate buffer, so we need to say + * that the number of bytes ready for transfer are decreased + * now + */ + rec->sw_ready -= bytes; + } + return; +} + +/* + * helper function for playback interrupt routine + */ +static inline void +snd_pcm_indirect2_playback_interrupt(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec, + snd_pcm_indirect2_copy_t copy, + snd_pcm_indirect2_zero_t zero) +{ +#ifdef SND_PCM_INDIRECT2_STAT + rec->irq_occured++; +#endif + /* hardware played some bytes, so there is room again (in fifo) */ + rec->hw_ready = 1; + + /* don't call ack() now, instead call transfer() function directly + * (normally called by ack() ) + */ + snd_pcm_indirect2_playback_transfer(substream, rec, copy, zero); + + if (rec->min_periods >= rec->min_multiple) { +#ifdef SND_PCM_INDIRECT2_STAT + if ((rec->min_periods / rec->min_multiple) > 7) + snd_printk(KERN_DEBUG + "STAT: more than 7 (%d) mul_adds - too big " + "to save!\n", + (rec->min_periods / rec->min_multiple)); + else + rec->mul_adds[(rec->min_periods / rec->min_multiple)]++; + rec->mul_elapsed_real += (rec->min_periods / rec->min_multiple); + rec->mul_elapsed++; +#endif + rec->min_periods = 0; + snd_pcm_period_elapsed(substream); + } +} + +/* + * helper function for capture ack callback + */ +static inline void +snd_pcm_indirect2_capture_transfer(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec, + snd_pcm_indirect2_copy_t copy, + snd_pcm_indirect2_zero_t null) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + snd_pcm_uframes_t appl_ptr = runtime->control->appl_ptr; + snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr; + + if (diff) { +#ifdef SND_PCM_INDIRECT2_STAT + rec->lastdifftime = jiffies; +#endif + if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2)) + diff += runtime->boundary; + rec->sw_ready -= frames_to_bytes(runtime, diff); + rec->appl_ptr = appl_ptr; + } + /* if hardware has something, but the intermediate buffer is full + * => skip contents of buffer + */ + if (rec->hw_ready && (rec->sw_ready >= (int)rec->sw_buffer_size)) { + unsigned int bytes; + +#ifdef SND_PCM_INDIRECT2_STAT + if (rec->firstzerotime == 0) { + rec->firstzerotime = jiffies; + snd_printk(KERN_DEBUG "STAT: (capture) @firstzerotime: " + "mul_elapsed: %d, min_period_count: %d\n", + rec->mul_elapsed, rec->min_period_count); + snd_printk(KERN_DEBUG "STAT: (capture) @firstzerotime: " + "sw_io: %d, sw_data: %d, appl_ptr: %u\n", + rec->sw_io, rec->sw_data, + (unsigned int)appl_ptr); + } + if ((jiffies - rec->firstzerotime) < 3750) { + rec->zero_times[(jiffies - rec->firstzerotime)]++; + rec->zero_times_saved++; + } else + rec->zero_times_notsaved++; +#endif + bytes = null(substream, rec); + +#ifdef SND_PCM_INDIRECT2_STAT + rec->zeros2hw += bytes; + if (bytes < 64) + rec->zero_sizes[bytes]++; + else + snd_printk(KERN_DEBUG + "STAT: (capture) %d zero Bytes copied to " + "hardware at once - too big to save!\n", + bytes); +#endif + snd_pcm_indirect2_increase_min_periods(substream, rec, 0, 0, + bytes); + /* report an overrun */ + rec->sw_io = SNDRV_PCM_POS_XRUN; + return; + } + while (rec->hw_ready && (rec->sw_ready < (int)rec->sw_buffer_size)) { + /* sw_to_end: max. number of bytes that we can write to the + * intermediate buffer (until it's end) + */ + size_t sw_to_end = rec->sw_buffer_size - rec->sw_data; + + /* bytes: max. number of bytes, which may be copied to the + * intermediate buffer without overflow (in _one_ step) + */ + size_t bytes = rec->sw_buffer_size - rec->sw_ready; + + /* limit number of bytes (for transfer) by available room in + * the intermediate buffer + */ + if (sw_to_end < bytes) + bytes = sw_to_end; + if (!bytes) + break; + +#ifdef SND_PCM_INDIRECT2_STAT + if (rec->firstbytetime == 0) + rec->firstbytetime = jiffies; + rec->lastbytetime = jiffies; +#endif + /* copy bytes from the intermediate buffer (position sw_data) + * to the HW at most and return number of bytes actually copied + * from HW + * Furthermore, set hw_ready to 0, if the fifo is empty now. + */ + bytes = copy(substream, rec, bytes); + rec->bytes2hw += bytes; + +#ifdef SND_PCM_INDIRECT2_STAT + if (bytes < 64) + rec->byte_sizes[bytes]++; + else + snd_printk(KERN_DEBUG + "STAT: (capture) %d Bytes copied to " + "hardware at once - too big to save!\n", + bytes); +#endif + /* increase sw_data by the number of actually copied bytes from + * HW + */ + rec->sw_data += bytes; + if (rec->sw_data == rec->sw_buffer_size) + rec->sw_data = 0; + + snd_pcm_indirect2_increase_min_periods(substream, rec, 0, 1, + bytes); + + /* number of bytes in the intermediate buffer, which haven't + * been fetched by ALSA yet. + */ + rec->sw_ready += bytes; + } + return; +} + +/* + * helper function for capture interrupt routine + */ +static inline void +snd_pcm_indirect2_capture_interrupt(struct snd_pcm_substream *substream, + struct snd_pcm_indirect2 *rec, + snd_pcm_indirect2_copy_t copy, + snd_pcm_indirect2_zero_t null) +{ +#ifdef SND_PCM_INDIRECT2_STAT + rec->irq_occured++; +#endif + /* hardware recorded some bytes, so there is something to read from the + * record fifo: + */ + rec->hw_ready = 1; + + /* don't call ack() now, instead call transfer() function directly + * (normally called by ack() ) + */ + snd_pcm_indirect2_capture_transfer(substream, rec, copy, null); + + if (rec->min_periods >= rec->min_multiple) { + +#ifdef SND_PCM_INDIRECT2_STAT + if ((rec->min_periods / rec->min_multiple) > 7) + snd_printk(KERN_DEBUG + "STAT: more than 7 (%d) mul_adds - " + "too big to save!\n", + (rec->min_periods / rec->min_multiple)); + else + rec->mul_adds[(rec->min_periods / rec->min_multiple)]++; + rec->mul_elapsed_real += (rec->min_periods / rec->min_multiple); + rec->mul_elapsed++; + + if (!(rec->mul_elapsed % 4)) { + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned int appl_ptr = + frames_to_bytes(runtime, + (unsigned int)runtime->control-> + appl_ptr) % rec->sw_buffer_size; + int diff = rec->sw_data - appl_ptr; + if (diff < 0) + diff += rec->sw_buffer_size; + snd_printk(KERN_DEBUG + "STAT: mul_elapsed: %d, sw_data: %u, " + "appl_ptr (bytes): %u, diff: %d\n", + rec->mul_elapsed, rec->sw_data, appl_ptr, + diff); + } +#endif + rec->min_periods = 0; + snd_pcm_period_elapsed(substream); + } +} + +#endif /* __SOUND_PCM_INDIRECT2_H */ -- 1.5.2.4

5 13

[alsa-devel] ALSA bugs and Launchpad
by Gavin Panella 15 Aug '07

15 Aug '07

Hi, I previously sent a similar message to webmaster(a)alsa-project.org, so apologies if you've seen this before. We've been trying to get Launchpad (*) to watch bugs within your Mantis bug tracker, but we can't get a full CSV export from your installation. I'm guessing it's been disabled or restricted somehow, so I want to make a case for letting Launchpad get at it. [* I work for Canonical Ltd. (http://www.canonical.com/) on the Launchpad.net site, specifically on the Bug Tracker (a.k.a. Malone). You can verify my signature and status as a Launchpad Developer at https://launchpad.net/~allenap.] I'll explain from the beginning, so you might want to skip a few paragraphs if you already know something about the Launchpad Bug Tracker. One feature of Launchpad is that users can add upstream dependencies to a bug report. For example, a display bug in Ubuntu could be filed on Launchpad, but be related to a bug in the core X.Org server project: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/38939 To add a dependency, a Launchpadder clicks "Also affects: Upstream" on the bug report, then enters the URL of the upstream bug report. Launchpad recognises this URL and will then "watch" the bug: once a day, Launchpad will fetch the status of the upstream bug and record it. Any changes are sent to bug subscribers, who might be the maintainers for that package in Ubuntu and who can then update the package with the fix. [Note that Launchpad only tracks the status of the upstream bug. If a Launchpadder wants to get involved in fixing the upstream bug then Launchpad will direct them to the upstream bug tracker.] We've recently added support for Mantis BT: Support Mantis as a remote bugtracker (and add ALSA's bugtracker) https://bugs.launchpad.net/malone/+bug/32266 There's also some info here: https://help.launchpad.net/Mantis The current approach we take is simple: the code logs in to a Mantis instance as a guest and fetches a complete CSV export (via csv_export.php). Many Mantis instances return a complete export of all their bugs to the guest user, but the ALSA bug tracker returns nothing unless the search is narrowed. This approach is not perfect (*) but it does work right now. If you're happy to do so, we'd be very grateful if you could let us fetch the full export while we're working on improvements. This will, amongst other things, help people working on Ubuntu be more aware of what's going on in the ALSA world. [* Taking a full export is crude (we get a full export even though we might only be watching a single bug, we only record the status and resolution anyway, and CSV has a plate-full of problems out-of-the- box) so we're already planning improvements, like narrowing searches, page scraping, writing extensions for Mantis, or using MantisConnect. Above all, we need to play nicely with external bug trackers.] Gavin. -- Gavin Panella, Europe/Luxembourg Tel: +352 26687161; GSM: +352 691739359 Skype: gavinpanella; Jabber: gavinpanella(a)gmail.com

2 1