* Simple-card without codec for testing purpose @ 2015-11-19 17:26 arnaud.mouiche 2015-11-20 1:24 ` Caleb Crome 0 siblings, 1 reply; 4+ messages in thread From: arnaud.mouiche @ 2015-11-19 17:26 UTC (permalink / raw) To: alsa-devel, Caleb Crome Hello, I'm starting debugging / testing all the fsl_ssi issues (see Caleb's previous post). First step I just need to setup a DTS entry for "simple-card" + fake codec to generate arbitrary PCM bus output (1 to 16 channels, various TDM, various sampling rate and format and master/slave role) I will then plug my logical analyser, or do some loopback, or plug a FPGA to generate/check some patterns. Is there such "fake codec" somewhere. Indeed, something that look like the bt-sco codec, but without rate/format/channel limitations ? Or does the "simple-card" even needs one ? Regards, Arnaud ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Simple-card without codec for testing purpose 2015-11-19 17:26 Simple-card without codec for testing purpose arnaud.mouiche @ 2015-11-20 1:24 ` Caleb Crome 2015-11-23 9:58 ` arnaud.mouiche 0 siblings, 1 reply; 4+ messages in thread From: Caleb Crome @ 2015-11-20 1:24 UTC (permalink / raw) To: arnaud.mouiche@invoxia.com; +Cc: alsa-devel@alsa-project.org I've been wondering about that too. I don't know how to do it easily. -Caleb On Thu, Nov 19, 2015 at 9:26 AM, arnaud.mouiche@invoxia.com <arnaud.mouiche@invoxia.com> wrote: > Hello, > > I'm starting debugging / testing all the fsl_ssi issues (see Caleb's > previous post). > > First step I just need to setup a DTS entry for "simple-card" + fake codec > to generate arbitrary PCM bus output (1 to 16 channels, various TDM, various > sampling rate and format and master/slave role) > I will then plug my logical analyser, or do some loopback, or plug a FPGA to > generate/check some patterns. > > Is there such "fake codec" somewhere. Indeed, something that look like the > bt-sco codec, but without rate/format/channel limitations ? > Or does the "simple-card" even needs one ? > > Regards, > Arnaud ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Simple-card without codec for testing purpose 2015-11-20 1:24 ` Caleb Crome @ 2015-11-23 9:58 ` arnaud.mouiche 2015-11-24 15:38 ` Caleb Crome 0 siblings, 1 reply; 4+ messages in thread From: arnaud.mouiche @ 2015-11-23 9:58 UTC (permalink / raw) To: Caleb Crome; +Cc: alsa-devel@alsa-project.org To answer to myself: - there are some "virtual" codecs available : "bt-sco", "linux,spdif-dit" and "linux,spdif-dir". but none of them is fully generic. - a "snd-soc-dummy-dai" codec is implemented in soc-utils.c. yet, no device-tree bindings are available, except if a patch like the following one is applied --- a/sound/soc/soc-utils.c +++ b/sound/soc/soc-utils.c @@ -19,6 +19,7 @@ #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/soc.h> +#include <linux/module.h> int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots) { @@ -151,9 +152,18 @@ static int snd_soc_dummy_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF +static const struct of_device_id soc_dummy_ids[] = { + { .compatible = "linux,snd-soc-dummy", }, + { } +}; +MODULE_DEVICE_TABLE(of, soc_dummy_ids); +#endif + static struct platform_driver soc_dummy_driver = { .driver = { .name = "snd-soc-dummy", + .of_match_table = of_match_ptr(soc_dummy_ids), }, .probe = snd_soc_dummy_probe, .remove = snd_soc_dummy_remove, Once done, here is a DTS example for imx6sl: &audmux { ssi3 { fsl,audmux-port = <6>; fsl,port-config = < #ifdef SSI_TEST_MASTER 0x00000000 #else (IMX_AUDMUX_V2_PTCR_TFSDIR | IMX_AUDMUX_V2_PTCR_TFSEL(4) | IMX_AUDMUX_V2_PTCR_TCLKDIR | IMX_AUDMUX_V2_PTCR_TCSEL(4)) #endif IMX_AUDMUX_V2_PDCR_RXDSEL(4) >; }; port5 { fsl,audmux-port = <4>; fsl,port-config = < #ifdef SSI_TEST_MASTER (IMX_AUDMUX_V2_PTCR_TFSDIR | IMX_AUDMUX_V2_PTCR_TFSEL(6) | IMX_AUDMUX_V2_PTCR_TCLKDIR | IMX_AUDMUX_V2_PTCR_TCSEL(6)) #else 0x00000000 #endif IMX_AUDMUX_V2_PDCR_RXDSEL(6) >; }; }; &ssi3 { status = "okay"; // select the a clock parent suitable for 48000 Hz sampling rate assigned-clocks = <&clks IMX6SL_CLK_SSI3_SEL>, <&clks IMX6SL_CLK_SSI3>; assigned-clock-parents = <&clks IMX6SL_CLK_PLL4_AUDIO_DIV>; assigned-clock-rates = <0>, <49152000>; }; / { codec_test: codec_test { compatible = "linux,snd-soc-dummy"; #sound-dai-cells = <0>; }; sound@2 { compatible = "simple-audio-card"; simple-audio-card,name = "test"; simple-audio-card,format="dsp_a"; #ifdef SSI_TEST_MASTER simple-audio-card,frame-master = <&sound2_ssi>; simple-audio-card,bitclock-master = <&sound2_ssi>; #else simple-audio-card,frame-master = <&codec_test>; simple-audio-card,bitclock-master = <&codec_test>; #endif sound2_ssi: simple-audio-card,cpu { sound-dai = <&ssi3>; system-clock-frequency = <1536000>; dai-tdm-slot-num = <2>; dai-tdm-slot-width = <16>; }; sound2codec: simple-audio-card,codec { sound-dai = <&codec_test>; }; }; }; Le 20/11/2015 02:24, Caleb Crome a écrit : > I've been wondering about that too. I don't know how to do it easily. > > -Caleb > > > On Thu, Nov 19, 2015 at 9:26 AM, arnaud.mouiche@invoxia.com > <arnaud.mouiche@invoxia.com> wrote: >> Hello, >> >> I'm starting debugging / testing all the fsl_ssi issues (see Caleb's >> previous post). >> >> First step I just need to setup a DTS entry for "simple-card" + fake codec >> to generate arbitrary PCM bus output (1 to 16 channels, various TDM, various >> sampling rate and format and master/slave role) >> I will then plug my logical analyser, or do some loopback, or plug a FPGA to >> generate/check some patterns. >> >> Is there such "fake codec" somewhere. Indeed, something that look like the >> bt-sco codec, but without rate/format/channel limitations ? >> Or does the "simple-card" even needs one ? >> >> Regards, >> Arnaud _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Simple-card without codec for testing purpose 2015-11-23 9:58 ` arnaud.mouiche @ 2015-11-24 15:38 ` Caleb Crome 0 siblings, 0 replies; 4+ messages in thread From: Caleb Crome @ 2015-11-24 15:38 UTC (permalink / raw) To: arnaud.mouiche@invoxia.com; +Cc: alsa-devel@alsa-project.org Great, I'll integrate this into my testing setup so I don't need an external codec. BTW, I have a github fork at https://github.com/ccrome/linux-caleb-dev/tree/linux-mx6-working-branch, which has my patches in it. Some patches are generic SSI related stuff, and others are specific hacks (like in the tms320aic3x.c file) for my hardware. I'll separate those out at some point to I have a clean set of patches that may be applied. -Caleb On Mon, Nov 23, 2015 at 1:58 AM, arnaud.mouiche@invoxia.com <arnaud.mouiche@invoxia.com> wrote: > > To answer to myself: > - there are some "virtual" codecs available : "bt-sco", "linux,spdif-dit" and "linux,spdif-dir". but none of them is fully generic. > - a "snd-soc-dummy-dai" codec is implemented in soc-utils.c. yet, no device-tree bindings are available, except if a patch like the following one is applied > > --- a/sound/soc/soc-utils.c > +++ b/sound/soc/soc-utils.c > @@ -19,6 +19,7 @@ > #include <sound/pcm.h> > #include <sound/pcm_params.h> > #include <sound/soc.h> > +#include <linux/module.h> > > int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots) > { > @@ -151,9 +152,18 @@ static int snd_soc_dummy_remove(struct platform_device *pdev) > return 0; > } > > +#ifdef CONFIG_OF > +static const struct of_device_id soc_dummy_ids[] = { > + { .compatible = "linux,snd-soc-dummy", }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, soc_dummy_ids); > +#endif > + > static struct platform_driver soc_dummy_driver = { > .driver = { > .name = "snd-soc-dummy", > + .of_match_table = of_match_ptr(soc_dummy_ids), > }, > .probe = snd_soc_dummy_probe, > .remove = snd_soc_dummy_remove, > > > > Once done, here is a DTS example for imx6sl: > > &audmux { > ssi3 { > fsl,audmux-port = <6>; > fsl,port-config = < > #ifdef SSI_TEST_MASTER > 0x00000000 > #else > (IMX_AUDMUX_V2_PTCR_TFSDIR | > IMX_AUDMUX_V2_PTCR_TFSEL(4) | > IMX_AUDMUX_V2_PTCR_TCLKDIR | > IMX_AUDMUX_V2_PTCR_TCSEL(4)) > #endif > IMX_AUDMUX_V2_PDCR_RXDSEL(4) > >; > }; > > port5 { > fsl,audmux-port = <4>; > fsl,port-config = < > #ifdef SSI_TEST_MASTER > (IMX_AUDMUX_V2_PTCR_TFSDIR | > IMX_AUDMUX_V2_PTCR_TFSEL(6) | > IMX_AUDMUX_V2_PTCR_TCLKDIR | > IMX_AUDMUX_V2_PTCR_TCSEL(6)) > #else > 0x00000000 > #endif > IMX_AUDMUX_V2_PDCR_RXDSEL(6) > >; > }; > }; > > > &ssi3 { > status = "okay"; > > // select the a clock parent suitable for 48000 Hz sampling rate > assigned-clocks = <&clks IMX6SL_CLK_SSI3_SEL>, <&clks IMX6SL_CLK_SSI3>; > assigned-clock-parents = <&clks IMX6SL_CLK_PLL4_AUDIO_DIV>; > assigned-clock-rates = <0>, <49152000>; > }; > > / { > codec_test: codec_test { > compatible = "linux,snd-soc-dummy"; > #sound-dai-cells = <0>; > }; > > > sound@2 { > compatible = "simple-audio-card"; > simple-audio-card,name = "test"; > simple-audio-card,format="dsp_a"; > > #ifdef SSI_TEST_MASTER > simple-audio-card,frame-master = <&sound2_ssi>; > simple-audio-card,bitclock-master = <&sound2_ssi>; > #else > simple-audio-card,frame-master = <&codec_test>; > simple-audio-card,bitclock-master = <&codec_test>; > #endif > sound2_ssi: simple-audio-card,cpu { > sound-dai = <&ssi3>; > system-clock-frequency = <1536000>; > dai-tdm-slot-num = <2>; > dai-tdm-slot-width = <16>; > }; > sound2codec: simple-audio-card,codec { > sound-dai = <&codec_test>; > }; > }; > > }; > > > > > > Le 20/11/2015 02:24, Caleb Crome a écrit : >> >> I've been wondering about that too. I don't know how to do it easily. >> >> -Caleb >> >> >> On Thu, Nov 19, 2015 at 9:26 AM, arnaud.mouiche@invoxia.com >> <arnaud.mouiche@invoxia.com> wrote: >>> >>> Hello, >>> >>> I'm starting debugging / testing all the fsl_ssi issues (see Caleb's >>> previous post). >>> >>> First step I just need to setup a DTS entry for "simple-card" + fake codec >>> to generate arbitrary PCM bus output (1 to 16 channels, various TDM, various >>> sampling rate and format and master/slave role) >>> I will then plug my logical analyser, or do some loopback, or plug a FPGA to >>> generate/check some patterns. >>> >>> Is there such "fake codec" somewhere. Indeed, something that look like the >>> bt-sco codec, but without rate/format/channel limitations ? >>> Or does the "simple-card" even needs one ? >>> >>> Regards, >>> Arnaud > > _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-11-24 15:39 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2015-11-19 17:26 Simple-card without codec for testing purpose arnaud.mouiche 2015-11-20 1:24 ` Caleb Crome 2015-11-23 9:58 ` arnaud.mouiche 2015-11-24 15:38 ` Caleb Crome
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