[Sound-open-firmware] [PATCH] topology: add fake dapm route supported in topology file

[Pierre-Louis Bossart]

On 5/18/18 2:57 AM, Rander Wang wrote:
> To reuse some machine drivers in Linux kernel without hacking
> dapm route info, some unsupported routes and widgets could be
> added in toplogy file.

I like this. A lot.
I wonder if we could go even further? Could we define a set of controls 
that do nothing but make userspace happy and allow us to reuse existing 
UCM files as is - which would also remove the need for a dedicated 
prefix for cards.

> 
> Signed-off-by: Rander Wang <rander.wang at linux.intel.com>
> 
> ---
> test on cnl apl and byt pass
> SOF: master da9baf3f3d
> kernel: v4.14 390a3ece3
> SOF-tools: master 86fe688a2b
> ---
>   topology/m4/utils.m4      | 38 ++++++++++++++++++++++++++++++++++++++
>   topology/sof-cnl-rt274.m4 | 11 +++++++++++
>   2 files changed, 49 insertions(+)
> 
> diff --git a/topology/m4/utils.m4 b/topology/m4/utils.m4
> index ba87c8d..8821576 100644
> --- a/topology/m4/utils.m4
> +++ b/topology/m4/utils.m4
> @@ -70,5 +70,43 @@ define(`W_DATA',
>   `	tuples STR($2)'
>   `}')
>   
> +dnl FAKE_DAPM_ROUTE_OUT(name, dai type, dai index, direction, index)
> +define(`FAKE_DAPM_ROUTE_OUT',
> +`SectionWidget.STR($1) {'
> +`       index STR($5)'
> +`       type "aif_out"'
> +`       no_pm "true"'
> +`}'
> +`SectionGraph.STR($2) {'
> +`       index STR($5)'
> +`'
> +`       lines ['
> +`               dapm($1,$2$3.$4)'
> +`       ]'
> +`}')
> +
> +dnl FAKE_DAPM_ROUTE_IN(name, dai type, dai index, direction, index)
> +define(`FAKE_DAPM_ROUTE_IN',
> +`SectionWidget.STR($1) {'
> +`       index STR($5)'
> +`       type "aif_in"'
> +`       no_pm "true"'
> +`}'
> +`SectionGraph.STR($2) {'
> +`       index STR($5)'
> +`'
> +`       lines ['
> +`               dapm($2$3.$4, $1)'
> +`       ]'
> +`}')
> +
> +dnl FAKE_WIDGET(name, index)
> +define(`FAKE_WIDGET',
> +`SectionWidget.STR($1) {'
> +`       index STR($2)'
> +`       type "mixer"'
> +`       no_pm "true"'
> +`}')
> +
>   divert(0) dnl
>   
> diff --git a/topology/sof-cnl-rt274.m4 b/topology/sof-cnl-rt274.m4
> index 89d5a25..f592b44 100644
> --- a/topology/sof-cnl-rt274.m4
> +++ b/topology/sof-cnl-rt274.m4
> @@ -69,3 +69,14 @@ DAI_CONFIG(SSP, 0, SSP0-Codec, DSP_B, 24,
>   	DAI_CLOCK(bclk, 4800000, codec_slave),
>   	DAI_CLOCK(fsync, 48000, codec_slave),
>   	DAI_TDM(4, 25, 3, 3))
> +
> +FAKE_DAPM_ROUTE_OUT(codec0_out, SSP, 0, OUT, 0)
> +FAKE_DAPM_ROUTE_OUT(codec1_out, SSP, 0, OUT, 1)
> +FAKE_DAPM_ROUTE_OUT(ssp0 Tx, SSP, 0, OUT, 2)
> +FAKE_DAPM_ROUTE_OUT(Capture, SSP, 0, OUT, 3)
> +FAKE_DAPM_ROUTE_OUT(SoC DMIC, SSP, 0, OUT, 4)
> +FAKE_DAPM_ROUTE_IN(codec0_in, SSP, 0, IN, 5)
> +FAKE_WIDGET(DMIC01 Rx, 6)
> +FAKE_WIDGET(DMic, 7)
> +FAKE_WIDGET(dmic01_hifi, 8)
> +FAKE_WIDGET(ssp0 Rx, 9)
>