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SubjectRe: [PATCH] ASoC: ti: Allocate dais dynamically for TDM and audio graph card

Hi

> > According to
> > Documentation/devicetree/bindings/sound/audio-graph-card.txt
> > it should be something like this:
> > &mcbsp3 {
> > #sound-dai-cells = <0>;
> > pinctrl-names = "default";
> > pinctrl-0 = <&mcbsp3_pins>;
> > status = "okay";
> >
> > ports {
> > #address-cells = <1>;
> > #size-cells = <0>;
> > port@0 {
> > reg = <0>;
> >
> > cpu_dai3: endpoint@0 {
> > dai-format = "dsp_a";
> > frame-master = <&cpcap_audio_codec1>;
> > bitclock-master = <&cpcap_audio_codec1>;
> > remote-endpoint = <&cpcap_audio_codec1>;
> > };
> >
> > cpu_dai_mdm: endpoint@1 {
> > dai-format = "dsp_a";
> > frame-master = <&cpcap_audio_codec1>;
> > bitclock-master = <&cpcap_audio_codec1>;
> > remote-endpoint = <&mot_mdm6600_audio_codec0>;
> > };
> > };
> > };
> > };
(snip)
> > I guess Morimoto-san can explain if he carries out of tree patches to
> > get the described setup working on top of mainline...

# I think ALSA ML is rejecting mail (?),
# I couldn't find original patch / Mail and Discussion at ALSA ML.
# Thus, I'm not 100% understanding what is the issue...

I confirmed attached patch on my local platform (= Renesas ULCB + KF board),
and it works well for me on at least v5.5 kernel.

--- kernel log --------------
...
[ 2.184193] rcar_sound ec500000.sound: probed
...
[ 2.227837] asoc-audio-graph-card sound: ak4613-hifi <-> rsnd-dai.0 mapping ok
[ 2.235474] asoc-audio-graph-card sound: snd-soc-dummy-dai <-> rsnd-dai.2 mapping ok
[ 2.243472] asoc-audio-graph-card sound: snd-soc-dummy-dai <-> rsnd-dai.3 mapping ok
[ 2.251463] asoc-audio-graph-card sound: snd-soc-dummy-dai <-> rsnd-dai.4 mapping ok
[ 2.259451] asoc-audio-graph-card sound: snd-soc-dummy-dai <-> rsnd-dai.5 mapping ok
[ 2.267448] asoc-audio-graph-card sound: snd-soc-dummy-dai <-> rsnd-dai.6 mapping ok
[ 2.275439] asoc-audio-graph-card sound: snd-soc-dummy-dai <-> rsnd-dai.7 mapping ok
[ 2.283429] asoc-audio-graph-card sound: snd-soc-dummy-dai <-> rsnd-dai.8 mapping ok
[ 2.291460] asoc-audio-graph-card sound: pcm3168a-dac <-> snd-soc-dummy-dai mapping ok
[ 2.299460] asoc-audio-graph-card sound: pcm3168a-adc <-> snd-soc-dummy-dai mapping ok
...
[ 5.479675] ALSA device list:
[ 5.482694] #0: rcar-sound
...

--- local patch -------------------

From 8d25a2ce640ec5be506584ab50e685d0a962aa2d Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Fri, 14 Dec 2018 09:47:47 +0900
Subject: [PATCH] Local v5.4: ulcb-kf: add TDM Split support

CPU0 ------ ak4613
CPU1 ------ PCM3168A-p /* 1ch/2ch */
CPU2 --/ /* 3ch/4ch */
CPU3 --/ /* 5ch/6ch */
CPU4 --/ /* 7ch/8ch */
CPU5 ------ PCM3168A-c /* 1ch/2ch */
CPU6 --/ /* 3ch/4ch */
CPU7 --/ /* 5ch/6ch */

aplay -D plughw:0,0 xxx.wav // ak4613
aplay -D plughw:0,1 xxx.wav // PCM3168A playback 1ch/2ch
aplay -D plughw:0,2 xxx.wav // PCM3168A playback 3ch/4ch
aplay -D plughw:0,3 xxx.wav // PCM3168A playback 5ch/6ch
aplay -D plughw:0,4 xxx.wav // PCM3168A playback 7ch/8ch
arecord -D plughw:0,5 xxx // PCM8168A capture 1ch/2ch
arecord -D plughw:0,6 xxx // PCM8168A capture 3ch/4ch
arecord -D plughw:0,7 xxx // PCM8168A capture 5ch/6ch

It seems 1 sound card DAI number is limited by SNDRV_MINOR().
Because of this size limit, total 8 DAI seems maximam.
So, this patch removes HDMI so far.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
arch/arm64/boot/dts/renesas/ulcb-kf.dtsi | 103 +++++++++++++++++++++--
1 file changed, 94 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
index 202177706cde..5eaf97ea7480 100644
--- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
@@ -115,18 +115,39 @@
#size-cells = <0>;
mclk-fs = <512>;
port@0 {
+ prefix = "pcm3168a";
+ convert-channels = <8>; /* TDM Split */
reg = <0>;
- pcm3168a_endpoint_p: endpoint {
+ pcm3168a_endpoint_p: endpoint@0 {
remote-endpoint = <&rsnd_for_pcm3168a_play>;
clocks = <&clksndsel>;
};
+ pcm3168a_endpoint_p2: endpoint@1 {
+ remote-endpoint = <&rsnd_for_pcm3168a_play2>;
+ };
+ pcm3168a_endpoint_p3: endpoint@2 {
+ remote-endpoint = <&rsnd_for_pcm3168a_play3>;
+ };
+ pcm3168a_endpoint_p4: endpoint@3 {
+ remote-endpoint = <&rsnd_for_pcm3168a_play4>;
+ };
};
port@1 {
+ prefix = "pcm3168a";
+ convert-channels = <6>; /* TDM Split */
reg = <1>;
- pcm3168a_endpoint_c: endpoint {
+ pcm3168a_endpoint_c: endpoint@0 {
remote-endpoint = <&rsnd_for_pcm3168a_capture>;
clocks = <&clksndsel>;
};
+ pcm3168a_endpoint_c2: endpoint@1 {
+ remote-endpoint = <&rsnd_for_pcm3168a_capture2>;
+ clocks = <&clksndsel>;
+ };
+ pcm3168a_endpoint_c3: endpoint@2 {
+ remote-endpoint = <&rsnd_for_pcm3168a_capture3>;
+ clocks = <&clksndsel>;
+ };
};
};
};
@@ -298,29 +319,83 @@
ports {
/* rsnd_port0/1 are on salvator-common */
rsnd_port2: port@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
reg = <2>;
- rsnd_for_pcm3168a_play: endpoint {
+ rsnd_for_pcm3168a_play: endpoint@2 {
+ reg = <2>;
remote-endpoint = <&pcm3168a_endpoint_p>;

dai-format = "i2s";
bitclock-master = <&rsnd_for_pcm3168a_play>;
frame-master = <&rsnd_for_pcm3168a_play>;
- dai-tdm-slot-num = <8>;

- playback = <&ssi3>;
+ playback = <&ssiu30 &ssi3>;
+ };
+ rsnd_for_pcm3168a_play2: endpoint@3 {
+ reg = <3>;
+ remote-endpoint = <&pcm3168a_endpoint_p2>;
+
+ dai-format = "i2s";
+ bitclock-master = <&rsnd_for_pcm3168a_play2>;
+ frame-master = <&rsnd_for_pcm3168a_play2>;
+
+ playback = <&ssiu31 &ssi3>;
+ };
+ rsnd_for_pcm3168a_play3: endpoint@4 {
+ reg = <4>;
+ remote-endpoint = <&pcm3168a_endpoint_p3>;
+
+ dai-format = "i2s";
+ bitclock-master = <&rsnd_for_pcm3168a_play3>;
+ frame-master = <&rsnd_for_pcm3168a_play3>;
+
+ playback = <&ssiu32 &ssi3>;
+ };
+ rsnd_for_pcm3168a_play4: endpoint@5 {
+ reg = <5>;
+ remote-endpoint = <&pcm3168a_endpoint_p4>;
+
+ dai-format = "i2s";
+ bitclock-master = <&rsnd_for_pcm3168a_play4>;
+ frame-master = <&rsnd_for_pcm3168a_play4>;
+
+ playback = <&ssiu33 &ssi3>;
};
};
rsnd_port3: port@3 {
+ #address-cells = <1>;
+ #size-cells = <0>;
reg = <3>;
- rsnd_for_pcm3168a_capture: endpoint {
+ rsnd_for_pcm3168a_capture: endpoint@6 {
+ reg = <6>;
remote-endpoint = <&pcm3168a_endpoint_c>;

dai-format = "i2s";
bitclock-master = <&rsnd_for_pcm3168a_capture>;
frame-master = <&rsnd_for_pcm3168a_capture>;
- dai-tdm-slot-num = <6>;

- capture = <&ssi4>;
+ capture = <&ssiu40 &ssi4>;
+ };
+ rsnd_for_pcm3168a_capture2: endpoint@7 {
+ reg = <7>;
+ remote-endpoint = <&pcm3168a_endpoint_c2>;
+
+ dai-format = "i2s";
+ bitclock-master = <&rsnd_for_pcm3168a_capture2>;
+ frame-master = <&rsnd_for_pcm3168a_capture2>;
+
+ capture = <&ssiu41 &ssi4>;
+ };
+ rsnd_for_pcm3168a_capture3: endpoint@8 {
+ reg = <8>;
+ remote-endpoint = <&pcm3168a_endpoint_c3>;
+
+ dai-format = "i2s";
+ bitclock-master = <&rsnd_for_pcm3168a_capture3>;
+ frame-master = <&rsnd_for_pcm3168a_capture3>;
+
+ capture = <&ssiu42 &ssi4>;
};
};
};
@@ -359,8 +434,18 @@
};

&sound_card {
+ compatible = "audio-graph-scu-card";
+
+ routing = "pcm3168a Playback", "DAI2 Playback",
+ "pcm3168a Playback", "DAI3 Playback",
+ "pcm3168a Playback", "DAI4 Playback",
+ "pcm3168a Playback", "DAI5 Playback",
+ "DAI6 Capture", "pcm3168a Capture",
+ "DAI7 Capture", "pcm3168a Capture",
+ "DAI8 Capture", "pcm3168a Capture";
+
dais = <&rsnd_port0 /* ak4613 */
- &rsnd_port1 /* HDMI0 */
+// &rsnd_port1 /* HDMI0 */
&rsnd_port2 /* pcm3168a playback */
&rsnd_port3 /* pcm3168a capture */
>;
--
2.17.1


Thank you for your help !!
Best regards
---
Kuninori Morimoto
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