Re: ALSA sound driver for Nokia 770 and DSP programming
hi, Robert Schuster schrieb: Hi, Siarhei Siamashka schrieb: Recently I have been trying to make it running and seems like we have a very good chance to have it working nicely. It is also interesting, that the linux-omap guys seem to be developing a new driver [3] for AIC23 which may eventually become a better alternative. Very nice! I will try your patch in mamona which IMO provides the most easy way to test those things out. Mamona is based on OpenEmbedded and every other distribution made from it bases its sound core on ALSA not gstreamer ... Its not entierly true. Sound core is based on a proprietary dsp interface. N800/810 has alsa/gstreamer/esd support. On fremantle/omap3 have fixed that problem, as there is real alsa + gstreamer/pulseaudio/esounds for higher level stuff. Stefan It is good that a new driver is in development, however I have doubts that we will be able to run 2.6.27+ on the N770 soon ;). Is the AIC23 also in the N8x0 devices? Regards Robert ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: ALSA sound driver for Nokia 770 and DSP programming
2008/9/27 Siarhei Siamashka [EMAIL PROTECTED]: That's great, feedback is very much welcome. Though bugreports can wait until I roll out the next revision of the patch ;) Well then I will also say that I think your progress on this is great, and that I enjoy reading your emails, even if I have nothing to contribute to them. I have two 770s, and this work will help them to be more useful for longer. I love it when you write that something is difficult and needs more work... then I just know that you will have done it about a day later! Best wishes, Neil ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: ALSA sound driver for Nokia 770 and DSP programming
Hi, Siarhei Siamashka schrieb: Recently I have been trying to make it running and seems like we have a very good chance to have it working nicely. It is also interesting, that the linux-omap guys seem to be developing a new driver [3] for AIC23 which may eventually become a better alternative. Very nice! I will try your patch in mamona which IMO provides the most easy way to test those things out. Mamona is based on OpenEmbedded and every other distribution made from it bases its sound core on ALSA not gstreamer ... It is good that a new driver is in development, however I have doubts that we will be able to run 2.6.27+ on the N770 soon ;). Is the AIC23 also in the N8x0 devices? Regards Robert signature.asc Description: OpenPGP digital signature ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
RE: ALSA sound driver for Nokia 770 and DSP programming
Recently I have been trying to make it running and seems like we have a very good chance to have it working nicely. It is also interesting, that the linux-omap guys seem to be developing a new driver [3] for AIC23 which may eventually become a better alternative. Very nice! Good stuff Siarhei :) Have you built a replacement DSP-kernel yet? I will try your patch in mamona which IMO provides the most easy way to test those things out. Mamona is based on OpenEmbedded and every other distribution made from it bases its sound core on ALSA not gstreamer ... Sounds like a useful test-bed. It is good that a new driver is in development, however I have doubts that we will be able to run 2.6.27+ on the N770 soon ;). Is the AIC23 also in the N8x0 devices? From the N810 datasheet, it looks like it contains a TVL320AIC33NIZQER, or in shorter form a TVL320AIC33: http://focus.ti.com/docs/prod/folders/print/tlv320aic33.html I seem to remember there being something different in the N800, anyone got the datasheet handy for the N800? Cheers, Simon ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: ALSA sound driver for Nokia 770 and DSP programming
On Friday 26 September 2008, Simon Pickering wrote: Recently I have been trying to make it running and seems like we have a very good chance to have it working nicely. It is also interesting, that the linux-omap guys seem to be developing a new driver [3] for AIC23 which may eventually become a better alternative. Very nice! Good stuff Siarhei :) Have you built a replacement DSP-kernel yet? Yes, sure. You can easily build DSP kernel and demo_console DSP task from the sources in dspgw-3.3-dsp.tar.bz2 All that is need to done is to run 'make' in 'tokliBIOS' (*), 'tinkernel' and 'apps/demo_mod' subdirectories. You will get 'tinkernel.out' and 'demo_console.o' binary files which are DSP kernel and DSP task respectively. After that, have a look into dspgw-3.3-dynamic-demo-omap1.tar.bz2 archive for the target directory layout and README file with the instructions how to test it. Of course you can replace 'tinkernel.out' and 'demo_console.o' with the files that you have compiled yourself. ARM side binaries also need to be recompiled before you can run them (they were compiled for OABI and will not run out of the box), but that's a minor issue. Only 'dsp_dld' compilation may cause problems because it needs a more up to date version of flex than the one that is part of OS2006 SDK. (*) Actually you need to apply a patch to 'tokliBIOScfg.tcf' if you want to use the generated 'tokliBIOScfg.cmd' instead of tinkernelcfg.cmd'. That was actually the hardest part. Now it is possible to experiment with configuring DSP kernel by changing .tcf file and enabling different kernel features. Documentation which explains its syntax is available in free DSP toolchain. So DSP programming for 770 and other OMAP1 based devices should be perfectly fine. But I can't say the same for N8x0 at the moment, because free DSP toolchain from TI does not support compilation of DSP kernel for OMAP2 according to dspgateway documentation. -- Best regards, Siarhei Siamashka --- dspgw-3.3-dsp.orig/tokliBIOS/tokliBIOScfg.tcf 2005-06-09 07:28:21.0 +0300 +++ dspgw-3.3-dsp/tokliBIOS/tokliBIOScfg.tcf 2008-09-27 03:00:40.0 +0300 @@ -47,6 +47,10 @@ bios.MEM.MALLOCSEG = prog.get(DARAM); bios.MEM.BIOSOBJSEG = prog.get(DARAM); +var extmem = bios.MEM.create(EXTMEM); +extmem.base = 0x14000; +extmem.len = 0x1000; +extmem.createHeap = false; /* * CLK ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: ALSA sound driver for Nokia 770 and DSP programming
On Friday 26 September 2008, Robert Schuster wrote: Hi, Siarhei Siamashka schrieb: Recently I have been trying to make it running and seems like we have a very good chance to have it working nicely. It is also interesting, that the linux-omap guys seem to be developing a new driver [3] for AIC23 which may eventually become a better alternative. Very nice! I will try your patch in mamona which IMO provides the most easy way to test those things out. That's great, feedback is very much welcome. Though bugreports can wait until I roll out the next revision of the patch ;) Mamona is based on OpenEmbedded and every other distribution made from it bases its sound core on ALSA not gstreamer ... Somehow I also like this approach better ... It is good that a new driver is in development, however I have doubts that we will be able to run 2.6.27+ on the N770 soon ;). Sure, upgrading the kernel may end up in fixing one problem, but introducing a lot more of them instead :) But we could try to backport the new driver to 2.6.16 once it is ready. Is the AIC23 also in the N8x0 devices? In addition to the information already provided by Simon, I can recommend to search linux-omap and alsa-devel mailing lists. -- Best regards, Siarhei Siamashka ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
ALSA sound driver for Nokia 770 and DSP programming
Hi,
As has been discovered long ago [1] but eventually forgotten, Nokia 770 has
AIC23 audio hardware [2] which can be used not only from DSP side, but
from ARM as well. Moreover, OS2006 kernel sources even contain an ARM driver
for it, but this driver is disabled (that's understandable as the driver is
not in a very good shape and has quite a number of bugs).
Recently I have been trying to make it running and seems like we have a very
good chance to have it working nicely. It is also interesting, that the
linux-omap guys seem to be developing a new driver [3] for AIC23 which may
eventually become a better alternative.
Kernel patch is attached. It enables AIC32 driver, adds a hack to
power on/off code so that audio codec is permanently powered on (power
on/off code is not reliable and needs to be reworked). Also it fixes a
problem with audio stuttering on video playback in mplayer (the driver
had broken position reporting which is critical for proper audio/video
synchronization).
Here is some usage instruction (beware that standard disclaimer applies:
you can use this patch at your own risk, this code is quite untested. If it
somehow manages to fry your device, you have been warned and I'm not
responsible for any breakages):
1. Disable esd daemon and DSP stuff in order to move it out of the way
(temporarily rename '/usr/bin/esd' and '/usr/sbin/dsp_dld' to something else)
2. Apply the attached patch to OS2006 kernel, compile and flash it to the
device
3. Compile and install alsa userspace library, I used alsa-lib-1.0.11.tar.bz2
4. Put attached 'asound.conf' into '/etc' directory on the device, it enables
dmix plugin for audio mixing and resampling
5. Compile and try some applications which use ALSA, I tested 'aplay'
and 'mplayer'
The driver is semi-usable now, but a lot still needs to be done:
* proper power management to avoid excessive battery drain
* audio volume control
* switch between speaker/headphone
* audio quality is a bit crappy now, this needs to be fixed
* maybe some more fixes for bugs that are yet to be discovered...
DMA code is quite suspicious (especially the way it does channels linking) and
might be responsible for audio quality issues. Also sofware mixing/resampling
code in dmix plugin can benefit from ARM optimizations.
Now regarding why we may want it. Once if we get a good, low latency, fully
functional and reliable ALSA sound driver running on ARM, it gives maemo
community a nice possibility to scrap all the proprietary DSP binaries. This
provides us with a new and shiny 252MHz C55x DSP core ready to be used by
something else :)
Free linux DSP toolchain from TI [4] supports generation of both DSP kernel
and DSP tasks for OMAP1 based devices which is sufficient for DSP development.
The toolchain license was supposed to permit open source development (with
noncommercial restriction), though the license text itself is a bit
questionable [5].
With DSP avalable for use and having no need to spend efforts on ensuring
compatibility and peaceful coexistence with proprietary binary codecs (free
and proprietary code does not mix well), it should be possible to turn
Nokia 770 into quite a powerful media player.
1. http://lists.maemo.org/pipermail/maemo-developers/2006-June/022231.html
2. http://focus.ti.com/docs/prod/folders/print/tlv320aic23b.html
3. http://thread.gmane.org/gmane.linux.ports.arm.omap/11700/focus=11709
4.
https://www-a.ti.com/downloads/sds_support/targetcontent/LinuxDspTools/index.html
5. http://www.gossamer-threads.com/lists/maemo/developers/30611
--
Best regards,
Siarhei Siamashka
diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index 3862a77..90f113a 100644
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -33,6 +33,8 @@
#include asm/arch/aic23.h
#include asm/arch/gpio.h
#include asm/arch/lcd_mipid.h
+#include asm/arch/mcbsp.h
+#include asm/arch/omap-alsa.h
extern void nokia770_ts_init(void);
extern void nokia770_mmc_init(void);
@@ -67,6 +69,42 @@ static int nokia770_keymap[] = {
0
};
+#define DEFAULT_BITPERSAMPLE 16
+
+static struct omap_mcbsp_reg_cfg mcbsp_regs = {
+.spcr2 = FREE | FRST | GRST | XRST | XINTM(3),
+.spcr1 = RINTM(3) | RRST,
+.rcr2 = RPHASE | RFRLEN2(OMAP_MCBSP_WORD_8) |
+RWDLEN2(OMAP_MCBSP_WORD_16) | RDATDLY(0),
+.rcr1 = RFRLEN1(OMAP_MCBSP_WORD_8) | RWDLEN1(OMAP_MCBSP_WORD_16),
+.xcr2 = XPHASE | XFRLEN2(OMAP_MCBSP_WORD_8) |
+XWDLEN2(OMAP_MCBSP_WORD_16) | XDATDLY(0) | XFIG,
+.xcr1 = XFRLEN1(OMAP_MCBSP_WORD_8) | XWDLEN1(OMAP_MCBSP_WORD_16),
+.srgr1 = FWID(DEFAULT_BITPERSAMPLE - 1),
+.srgr2 = GSYNC | CLKSP | FSGM | FPER(DEFAULT_BITPERSAMPLE * 2 - 1),
+/*.pcr0 = FSXM | FSRM | CLKXM | CLKRM | CLKXP | CLKRP,*/ /* mcbsp: master */
+.pcr0 = CLKXP | CLKRP, /* mcbsp: slave */
+};
+
+static struct omap_alsa_codec_config alsa_config = {
+.name = Nokia770 AIC23,
+.mcbsp_regs_alsa=
Re: ALSA sound driver for Nokia 770 and DSP programming
On Thu, Sep 25, 2008 at 10:07 PM, Siarhei Siamashka [EMAIL PROTECTED] wrote: Hi, As has been discovered long ago [1] but eventually forgotten, Nokia 770 has AIC23 audio hardware [2] which can be used not only from DSP side, but from ARM as well. Moreover, OS2006 kernel sources even contain an ARM driver for it, but this driver is disabled (that's understandable as the driver is not in a very good shape and has quite a number of bugs). Recently I have been trying to make it running and seems like we have a very good chance to have it working nicely. It is also interesting, that the linux-omap guys seem to be developing a new driver [3] for AIC23 which may eventually become a better alternative. Kernel patch is attached. It enables AIC32 driver, adds a hack to power on/off code so that audio codec is permanently powered on (power on/off code is not reliable and needs to be reworked). Also it fixes a problem with audio stuttering on video playback in mplayer (the driver had broken position reporting which is critical for proper audio/video synchronization). Here is some usage instruction (beware that standard disclaimer applies: you can use this patch at your own risk, this code is quite untested. If it somehow manages to fry your device, you have been warned and I'm not responsible for any breakages): 1. Disable esd daemon and DSP stuff in order to move it out of the way (temporarily rename '/usr/bin/esd' and '/usr/sbin/dsp_dld' to something else) 2. Apply the attached patch to OS2006 kernel, compile and flash it to the device 3. Compile and install alsa userspace library, I used alsa-lib-1.0.11.tar.bz2 4. Put attached 'asound.conf' into '/etc' directory on the device, it enables dmix plugin for audio mixing and resampling 5. Compile and try some applications which use ALSA, I tested 'aplay' and 'mplayer' The driver is semi-usable now, but a lot still needs to be done: * proper power management to avoid excessive battery drain * audio volume control * switch between speaker/headphone * audio quality is a bit crappy now, this needs to be fixed * maybe some more fixes for bugs that are yet to be discovered... DMA code is quite suspicious (especially the way it does channels linking) and might be responsible for audio quality issues. Also sofware mixing/resampling code in dmix plugin can benefit from ARM optimizations. Now regarding why we may want it. Once if we get a good, low latency, fully functional and reliable ALSA sound driver running on ARM, it gives maemo community a nice possibility to scrap all the proprietary DSP binaries. This provides us with a new and shiny 252MHz C55x DSP core ready to be used by something else :) Free linux DSP toolchain from TI [4] supports generation of both DSP kernel and DSP tasks for OMAP1 based devices which is sufficient for DSP development. The toolchain license was supposed to permit open source development (with noncommercial restriction), though the license text itself is a bit questionable [5]. With DSP avalable for use and having no need to spend efforts on ensuring compatibility and peaceful coexistence with proprietary binary codecs (free and proprietary code does not mix well), it should be possible to turn Nokia 770 into quite a powerful media player. Great stuff! Do you plan to use the dsp-gateway or dsp-bridge? -- Felipe Contreras ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: ALSA sound driver for Nokia 770 and DSP programming
On Thursday 25 September 2008, Felipe Contreras wrote: On Thu, Sep 25, 2008 at 10:07 PM, Siarhei Siamashka [...] Now regarding why we may want it. Once if we get a good, low latency, fully functional and reliable ALSA sound driver running on ARM, it gives maemo community a nice possibility to scrap all the proprietary DSP binaries. This provides us with a new and shiny 252MHz C55x DSP core ready to be used by something else :) Free linux DSP toolchain from TI [4] supports generation of both DSP kernel and DSP tasks for OMAP1 based devices which is sufficient for DSP development. The toolchain license was supposed to permit open source development (with noncommercial restriction), though the license text itself is a bit questionable [5]. With DSP avalable for use and having no need to spend efforts on ensuring compatibility and peaceful coexistence with proprietary binary codecs (free and proprietary code does not mix well), it should be possible to turn Nokia 770 into quite a powerful media player. Great stuff! Do you plan to use the dsp-gateway or dsp-bridge? Now as you mentioned that, it indeed makes sense to consider other alternatives if they exist. Do you have any links to the information about dspgateway vs. dspbridge comparison (features/performance/reliability)? Using dspgateway has a clear advantage that it is already included in the kernel. And dspgateway is more or less ok, though patching it a bit in order to improve performance will be required. -- Best regards, Siarhei Siamashka ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
Re: ALSA sound driver for Nokia 770 and DSP programming
On Fri, Sep 26, 2008 at 12:06 AM, Siarhei Siamashka [EMAIL PROTECTED] wrote: On Thursday 25 September 2008, Felipe Contreras wrote: On Thu, Sep 25, 2008 at 10:07 PM, Siarhei Siamashka [...] Now regarding why we may want it. Once if we get a good, low latency, fully functional and reliable ALSA sound driver running on ARM, it gives maemo community a nice possibility to scrap all the proprietary DSP binaries. This provides us with a new and shiny 252MHz C55x DSP core ready to be used by something else :) Free linux DSP toolchain from TI [4] supports generation of both DSP kernel and DSP tasks for OMAP1 based devices which is sufficient for DSP development. The toolchain license was supposed to permit open source development (with noncommercial restriction), though the license text itself is a bit questionable [5]. With DSP avalable for use and having no need to spend efforts on ensuring compatibility and peaceful coexistence with proprietary binary codecs (free and proprietary code does not mix well), it should be possible to turn Nokia 770 into quite a powerful media player. Great stuff! Do you plan to use the dsp-gateway or dsp-bridge? Now as you mentioned that, it indeed makes sense to consider other alternatives if they exist. Do you have any links to the information about dspgateway vs. dspbridge comparison (features/performance/reliability)? Using dspgateway has a clear advantage that it is already included in the kernel. And dspgateway is more or less ok, though patching it a bit in order to improve performance will be required. Not really, but I've been thinking that a comparison would be useful. Perhaps some dummy DSP nodes and clients to test them on both would help. I have one for the dsp-bridge, but not dsp-gateway. -- Felipe Contreras ___ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
