1315 lines
28 KiB
C
1315 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// ASoC Audio Graph Card2 support
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//
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// Copyright (C) 2020 Renesas Electronics Corp.
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// Copyright (C) 2020 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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//
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// based on ${LINUX}/sound/soc/generic/audio-graph-card.c
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#include <linux/clk.h>
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#include <linux/device.h>
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#include <linux/gpio.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/of_graph.h>
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#include <linux/platform_device.h>
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#include <linux/string.h>
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#include <sound/graph_card.h>
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/************************************
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daifmt
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************************************
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ports {
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format = "left_j";
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port@0 {
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bitclock-master;
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sample0: endpoint@0 {
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frame-master;
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};
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sample1: endpoint@1 {
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format = "i2s";
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};
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};
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...
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};
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You can set daifmt at ports/port/endpoint.
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It uses *latest* format, and *share* master settings.
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In above case,
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sample0: left_j, bitclock-master, frame-master
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sample1: i2s, bitclock-master
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If there was no settings, *Codec* will be
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bitclock/frame provider as default.
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see
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graph_parse_daifmt().
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************************************
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Normal Audio-Graph
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************************************
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CPU <---> Codec
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sound {
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compatible = "audio-graph-card2";
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links = <&cpu>;
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};
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CPU {
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cpu: port {
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bitclock-master;
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frame-master;
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cpu_ep: endpoint { remote-endpoint = <&codec_ep>; }; };
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};
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Codec {
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port { codec_ep: endpoint { remote-endpoint = <&cpu_ep>; }; };
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};
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************************************
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Multi-CPU/Codec
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************************************
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It has connection part (= X) and list part (= y).
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links indicates connection part of CPU side (= A).
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+-+ (A) +-+
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CPU1 --(y) | | <-(X)--(X)-> | | (y)-- Codec1
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CPU2 --(y) | | | | (y)-- Codec2
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+-+ +-+
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sound {
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compatible = "audio-graph-card2";
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(A) links = <&mcpu>;
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multi {
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ports@0 {
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(X) (A) mcpu: port@0 { mcpu0_ep: endpoint { remote-endpoint = <&mcodec0_ep>; }; };
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(y) port@1 { mcpu1_ep: endpoint { remote-endpoint = <&cpu1_ep>; }; };
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(y) port@2 { mcpu2_ep: endpoint { remote-endpoint = <&cpu2_ep>; }; };
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};
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ports@1 {
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(X) port@0 { mcodec0_ep: endpoint { remote-endpoint = <&mcpu0_ep>; }; };
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(y) port@1 { mcodec1_ep: endpoint { remote-endpoint = <&codec1_ep>; }; };
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(y) port@2 { mcodec2_ep: endpoint { remote-endpoint = <&codec2_ep>; }; };
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};
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};
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};
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CPU {
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ports {
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bitclock-master;
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frame-master;
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port@0 { cpu1_ep: endpoint { remote-endpoint = <&mcpu1_ep>; }; };
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port@1 { cpu2_ep: endpoint { remote-endpoint = <&mcpu2_ep>; }; };
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};
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};
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Codec {
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ports {
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port@0 { codec1_ep: endpoint { remote-endpoint = <&mcodec1_ep>; }; };
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port@1 { codec2_ep: endpoint { remote-endpoint = <&mcodec2_ep>; }; };
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};
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};
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************************************
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DPCM
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************************************
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DSP
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************
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PCM0 <--> * fe0 be0 * <--> DAI0: Codec Headset
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PCM1 <--> * fe1 be1 * <--> DAI1: Codec Speakers
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PCM2 <--> * fe2 be2 * <--> DAI2: MODEM
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PCM3 <--> * fe3 be3 * <--> DAI3: BT
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* be4 * <--> DAI4: DMIC
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* be5 * <--> DAI5: FM
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************
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sound {
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compatible = "audio-graph-card2";
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// indicate routing
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routing = "xxx Playback", "xxx Playback",
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"xxx Playback", "xxx Playback",
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"xxx Playback", "xxx Playback";
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// indicate all Front-End, Back-End
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links = <&fe0, &fe1, ...,
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&be0, &be1, ...>;
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dpcm {
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// Front-End
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ports@0 {
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fe0: port@0 { fe0_ep: endpoint { remote-endpoint = <&pcm0_ep>; }; };
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fe1: port@1 { fe1_ep: endpoint { remote-endpoint = <&pcm1_ep>; }; };
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...
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};
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// Back-End
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ports@1 {
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be0: port@0 { be0_ep: endpoint { remote-endpoint = <&dai0_ep>; }; };
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be1: port@1 { be1_ep: endpoint { remote-endpoint = <&dai1_ep>; }; };
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...
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};
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};
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};
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CPU {
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ports {
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bitclock-master;
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frame-master;
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port@0 { pcm0_ep: endpoint { remote-endpoint = <&fe0_ep>; }; };
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port@1 { pcm1_ep: endpoint { remote-endpoint = <&fe1_ep>; }; };
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...
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};
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};
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Codec {
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ports {
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port@0 { dai0_ep: endpoint { remote-endpoint = <&be0_ep>; }; };
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port@1 { dai1_ep: endpoint { remote-endpoint = <&be1_ep>; }; };
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...
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};
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};
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************************************
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Codec to Codec
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************************************
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+--+
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| |<-- Codec0 <- IN
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| |--> Codec1 -> OUT
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+--+
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sound {
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compatible = "audio-graph-card2";
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routing = "OUT" ,"DAI1 Playback",
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"DAI0 Capture", "IN";
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links = <&c2c>;
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codec2codec {
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ports {
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rate = <48000>;
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c2c: port@0 { c2cf_ep: endpoint { remote-endpoint = <&codec0_ep>; }; };
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port@1 { c2cb_ep: endpoint { remote-endpoint = <&codec1_ep>; }; };
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};
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};
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Codec {
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ports {
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port@0 {
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bitclock-master;
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frame-master;
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codec0_ep: endpoint { remote-endpoint = <&c2cf_ep>; }; };
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port@1 { codec1_ep: endpoint { remote-endpoint = <&c2cb_ep>; }; };
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};
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};
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*/
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enum graph_type {
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GRAPH_NORMAL,
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GRAPH_DPCM,
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GRAPH_C2C,
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GRAPH_MULTI, /* don't use ! Use this only in __graph_get_type() */
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};
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#define GRAPH_NODENAME_MULTI "multi"
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#define GRAPH_NODENAME_DPCM "dpcm"
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#define GRAPH_NODENAME_C2C "codec2codec"
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#define port_to_endpoint(port) of_get_child_by_name(port, "endpoint")
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static enum graph_type __graph_get_type(struct device_node *lnk)
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{
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struct device_node *np, *parent_np;
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enum graph_type ret;
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/*
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* target {
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* ports {
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* => lnk: port@0 { ... };
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* port@1 { ... };
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* };
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* };
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*/
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np = of_get_parent(lnk);
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if (of_node_name_eq(np, "ports")) {
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parent_np = of_get_parent(np);
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of_node_put(np);
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np = parent_np;
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}
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if (of_node_name_eq(np, GRAPH_NODENAME_MULTI)) {
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ret = GRAPH_MULTI;
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goto out_put;
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}
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if (of_node_name_eq(np, GRAPH_NODENAME_DPCM)) {
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ret = GRAPH_DPCM;
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goto out_put;
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}
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if (of_node_name_eq(np, GRAPH_NODENAME_C2C)) {
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ret = GRAPH_C2C;
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goto out_put;
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}
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ret = GRAPH_NORMAL;
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out_put:
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of_node_put(np);
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return ret;
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}
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static enum graph_type graph_get_type(struct asoc_simple_priv *priv,
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struct device_node *lnk)
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{
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enum graph_type type = __graph_get_type(lnk);
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/* GRAPH_MULTI here means GRAPH_NORMAL */
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if (type == GRAPH_MULTI)
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type = GRAPH_NORMAL;
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#ifdef DEBUG
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{
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struct device *dev = simple_priv_to_dev(priv);
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const char *str = "Normal";
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switch (type) {
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case GRAPH_DPCM:
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if (asoc_graph_is_ports0(lnk))
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str = "DPCM Front-End";
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else
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str = "DPCM Back-End";
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break;
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case GRAPH_C2C:
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str = "Codec2Codec";
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break;
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default:
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break;
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}
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dev_dbg(dev, "%pOF (%s)", lnk, str);
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}
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#endif
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return type;
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}
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static int graph_lnk_is_multi(struct device_node *lnk)
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{
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return __graph_get_type(lnk) == GRAPH_MULTI;
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}
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static struct device_node *graph_get_next_multi_ep(struct device_node **port)
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{
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struct device_node *ports = of_get_parent(*port);
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struct device_node *ep = NULL;
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struct device_node *rep = NULL;
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/*
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* multi {
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* ports {
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* => lnk: port@0 { ... };
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* port@1 { ep { ... = rep0 } };
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* port@2 { ep { ... = rep1 } };
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* ...
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* };
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* };
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*
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* xxx {
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* port@0 { rep0 };
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* port@1 { rep1 };
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* };
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*/
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do {
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*port = of_get_next_child(ports, *port);
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if (!*port)
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break;
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} while (!of_node_name_eq(*port, "port"));
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if (*port) {
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ep = port_to_endpoint(*port);
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rep = of_graph_get_remote_endpoint(ep);
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}
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of_node_put(ep);
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of_node_put(ports);
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return rep;
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}
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static const struct snd_soc_ops graph_ops = {
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.startup = asoc_simple_startup,
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.shutdown = asoc_simple_shutdown,
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.hw_params = asoc_simple_hw_params,
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};
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static int graph_get_dai_id(struct device_node *ep)
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{
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struct device_node *node;
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struct device_node *endpoint;
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struct of_endpoint info;
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int i, id;
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const u32 *reg;
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int ret;
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/* use driver specified DAI ID if exist */
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ret = snd_soc_get_dai_id(ep);
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if (ret != -ENOTSUPP)
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return ret;
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/* use endpoint/port reg if exist */
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ret = of_graph_parse_endpoint(ep, &info);
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if (ret == 0) {
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/*
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* Because it will count port/endpoint if it doesn't have "reg".
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* But, we can't judge whether it has "no reg", or "reg = <0>"
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* only of_graph_parse_endpoint().
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* We need to check "reg" property
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*/
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if (of_get_property(ep, "reg", NULL))
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return info.id;
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node = of_get_parent(ep);
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reg = of_get_property(node, "reg", NULL);
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of_node_put(node);
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if (reg)
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return info.port;
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}
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node = of_graph_get_port_parent(ep);
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/*
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* Non HDMI sound case, counting port/endpoint on its DT
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* is enough. Let's count it.
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*/
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i = 0;
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id = -1;
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for_each_endpoint_of_node(node, endpoint) {
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if (endpoint == ep)
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id = i;
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i++;
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}
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of_node_put(node);
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if (id < 0)
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return -ENODEV;
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return id;
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}
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static int asoc_simple_parse_dai(struct device_node *ep,
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struct snd_soc_dai_link_component *dlc,
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int *is_single_link)
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{
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struct device_node *node;
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struct of_phandle_args args;
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int ret;
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if (!ep)
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return 0;
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node = of_graph_get_port_parent(ep);
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/* Get dai->name */
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args.np = node;
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args.args[0] = graph_get_dai_id(ep);
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args.args_count = (of_graph_get_endpoint_count(node) > 1);
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/*
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* FIXME
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*
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* Here, dlc->dai_name is pointer to CPU/Codec DAI name.
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* If user unbinded CPU or Codec driver, but not for Sound Card,
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* dlc->dai_name is keeping unbinded CPU or Codec
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* driver's pointer.
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*
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* If user re-bind CPU or Codec driver again, ALSA SoC will try
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* to rebind Card via snd_soc_try_rebind_card(), but because of
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* above reason, it might can't bind Sound Card.
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* Because Sound Card is pointing to released dai_name pointer.
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*
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* To avoid this rebind Card issue,
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* 1) It needs to alloc memory to keep dai_name eventhough
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* CPU or Codec driver was unbinded, or
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* 2) user need to rebind Sound Card everytime
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* if he unbinded CPU or Codec.
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*/
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ret = snd_soc_get_dai_name(&args, &dlc->dai_name);
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if (ret < 0) {
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of_node_put(node);
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return ret;
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}
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dlc->of_node = node;
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if (is_single_link)
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*is_single_link = of_graph_get_endpoint_count(node) == 1;
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return 0;
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}
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static void graph_parse_convert(struct device_node *ep,
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struct simple_dai_props *props)
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{
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struct device_node *port = of_get_parent(ep);
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struct device_node *ports = of_get_parent(port);
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struct asoc_simple_data *adata = &props->adata;
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if (of_node_name_eq(ports, "ports"))
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asoc_simple_parse_convert(ports, NULL, adata);
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asoc_simple_parse_convert(port, NULL, adata);
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asoc_simple_parse_convert(ep, NULL, adata);
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of_node_put(port);
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of_node_put(ports);
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}
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static void graph_parse_mclk_fs(struct device_node *ep,
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struct simple_dai_props *props)
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{
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struct device_node *port = of_get_parent(ep);
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struct device_node *ports = of_get_parent(port);
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if (of_node_name_eq(ports, "ports"))
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of_property_read_u32(ports, "mclk-fs", &props->mclk_fs);
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of_property_read_u32(port, "mclk-fs", &props->mclk_fs);
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of_property_read_u32(ep, "mclk-fs", &props->mclk_fs);
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of_node_put(port);
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of_node_put(ports);
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}
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static int __graph_parse_node(struct asoc_simple_priv *priv,
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enum graph_type gtype,
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struct device_node *ep,
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struct link_info *li,
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int is_cpu, int idx)
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{
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struct device *dev = simple_priv_to_dev(priv);
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struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
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struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
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struct snd_soc_dai_link_component *dlc;
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struct asoc_simple_dai *dai;
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int ret, is_single_links = 0;
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if (is_cpu) {
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dlc = asoc_link_to_cpu(dai_link, idx);
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dai = simple_props_to_dai_cpu(dai_props, idx);
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} else {
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dlc = asoc_link_to_codec(dai_link, idx);
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dai = simple_props_to_dai_codec(dai_props, idx);
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}
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graph_parse_mclk_fs(ep, dai_props);
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ret = asoc_simple_parse_dai(ep, dlc, &is_single_links);
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if (ret < 0)
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return ret;
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ret = asoc_simple_parse_tdm(ep, dai);
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if (ret < 0)
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return ret;
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ret = asoc_simple_parse_tdm_width_map(dev, ep, dai);
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if (ret < 0)
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return ret;
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ret = asoc_simple_parse_clk(dev, ep, dai, dlc);
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if (ret < 0)
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return ret;
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/*
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* set DAI Name
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*/
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if (!dai_link->name) {
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struct snd_soc_dai_link_component *cpus = dlc;
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struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, idx);
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char *cpu_multi = "";
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char *codec_multi = "";
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if (dai_link->num_cpus > 1)
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cpu_multi = "_multi";
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if (dai_link->num_codecs > 1)
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codec_multi = "_multi";
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|
|
|
switch (gtype) {
|
|
case GRAPH_NORMAL:
|
|
/* run is_cpu only. see audio_graph2_link_normal() */
|
|
if (is_cpu)
|
|
asoc_simple_set_dailink_name(dev, dai_link, "%s%s-%s%s",
|
|
cpus->dai_name, cpu_multi,
|
|
codecs->dai_name, codec_multi);
|
|
break;
|
|
case GRAPH_DPCM:
|
|
if (is_cpu)
|
|
asoc_simple_set_dailink_name(dev, dai_link, "fe.%pOFP.%s%s",
|
|
cpus->of_node, cpus->dai_name, cpu_multi);
|
|
else
|
|
asoc_simple_set_dailink_name(dev, dai_link, "be.%pOFP.%s%s",
|
|
codecs->of_node, codecs->dai_name, codec_multi);
|
|
break;
|
|
case GRAPH_C2C:
|
|
/* run is_cpu only. see audio_graph2_link_c2c() */
|
|
if (is_cpu)
|
|
asoc_simple_set_dailink_name(dev, dai_link, "c2c.%s%s-%s%s",
|
|
cpus->dai_name, cpu_multi,
|
|
codecs->dai_name, codec_multi);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check "prefix" from top node
|
|
* if DPCM-BE case
|
|
*/
|
|
if (!is_cpu && gtype == GRAPH_DPCM) {
|
|
struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, idx);
|
|
struct snd_soc_codec_conf *cconf = simple_props_to_codec_conf(dai_props, idx);
|
|
struct device_node *rport = of_get_parent(ep);
|
|
struct device_node *rports = of_get_parent(rport);
|
|
|
|
if (of_node_name_eq(rports, "ports"))
|
|
snd_soc_of_parse_node_prefix(rports, cconf, codecs->of_node, "prefix");
|
|
snd_soc_of_parse_node_prefix(rport, cconf, codecs->of_node, "prefix");
|
|
|
|
of_node_put(rport);
|
|
of_node_put(rports);
|
|
}
|
|
|
|
if (is_cpu) {
|
|
struct snd_soc_dai_link_component *cpus = dlc;
|
|
struct snd_soc_dai_link_component *platforms = asoc_link_to_platform(dai_link, idx);
|
|
|
|
asoc_simple_canonicalize_cpu(cpus, is_single_links);
|
|
asoc_simple_canonicalize_platform(platforms, cpus);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int graph_parse_node(struct asoc_simple_priv *priv,
|
|
enum graph_type gtype,
|
|
struct device_node *port,
|
|
struct link_info *li, int is_cpu)
|
|
{
|
|
struct device_node *ep;
|
|
int ret = 0;
|
|
|
|
if (graph_lnk_is_multi(port)) {
|
|
int idx;
|
|
|
|
of_node_get(port);
|
|
|
|
for (idx = 0;; idx++) {
|
|
ep = graph_get_next_multi_ep(&port);
|
|
if (!ep)
|
|
break;
|
|
|
|
ret = __graph_parse_node(priv, gtype, ep,
|
|
li, is_cpu, idx);
|
|
of_node_put(ep);
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
} else {
|
|
/* Single CPU / Codec */
|
|
ep = port_to_endpoint(port);
|
|
ret = __graph_parse_node(priv, gtype, ep, li, is_cpu, 0);
|
|
of_node_put(ep);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void graph_parse_daifmt(struct device_node *node,
|
|
unsigned int *daifmt, unsigned int *bit_frame)
|
|
{
|
|
unsigned int fmt;
|
|
|
|
/*
|
|
* see also above "daifmt" explanation
|
|
* and samples.
|
|
*/
|
|
|
|
/*
|
|
* ports {
|
|
* (A)
|
|
* port {
|
|
* (B)
|
|
* endpoint {
|
|
* (C)
|
|
* };
|
|
* };
|
|
* };
|
|
* };
|
|
*/
|
|
|
|
/*
|
|
* clock_provider:
|
|
*
|
|
* It can be judged it is provider
|
|
* if (A) or (B) or (C) has bitclock-master / frame-master flag.
|
|
*
|
|
* use "or"
|
|
*/
|
|
*bit_frame |= snd_soc_daifmt_parse_clock_provider_as_bitmap(node, NULL);
|
|
|
|
#define update_daifmt(name) \
|
|
if (!(*daifmt & SND_SOC_DAIFMT_##name##_MASK) && \
|
|
(fmt & SND_SOC_DAIFMT_##name##_MASK)) \
|
|
*daifmt |= fmt & SND_SOC_DAIFMT_##name##_MASK
|
|
|
|
/*
|
|
* format
|
|
*
|
|
* This function is called by (C) -> (B) -> (A) order.
|
|
* Set if applicable part was not yet set.
|
|
*/
|
|
fmt = snd_soc_daifmt_parse_format(node, NULL);
|
|
update_daifmt(FORMAT);
|
|
update_daifmt(CLOCK);
|
|
update_daifmt(INV);
|
|
}
|
|
|
|
static void graph_link_init(struct asoc_simple_priv *priv,
|
|
struct device_node *port,
|
|
struct link_info *li,
|
|
int is_cpu_node)
|
|
{
|
|
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
|
|
struct device_node *ep;
|
|
struct device_node *ports;
|
|
unsigned int daifmt = 0, daiclk = 0;
|
|
unsigned int bit_frame = 0;
|
|
|
|
if (graph_lnk_is_multi(port)) {
|
|
of_node_get(port);
|
|
ep = graph_get_next_multi_ep(&port);
|
|
port = of_get_parent(ep);
|
|
} else {
|
|
ep = port_to_endpoint(port);
|
|
}
|
|
|
|
ports = of_get_parent(port);
|
|
|
|
/*
|
|
* ports {
|
|
* (A)
|
|
* port {
|
|
* (B)
|
|
* endpoint {
|
|
* (C)
|
|
* };
|
|
* };
|
|
* };
|
|
* };
|
|
*/
|
|
graph_parse_daifmt(ep, &daifmt, &bit_frame); /* (C) */
|
|
graph_parse_daifmt(port, &daifmt, &bit_frame); /* (B) */
|
|
if (of_node_name_eq(ports, "ports"))
|
|
graph_parse_daifmt(ports, &daifmt, &bit_frame); /* (A) */
|
|
|
|
/*
|
|
* convert bit_frame
|
|
* We need to flip clock_provider if it was CPU node,
|
|
* because it is Codec base.
|
|
*/
|
|
daiclk = snd_soc_daifmt_clock_provider_from_bitmap(bit_frame);
|
|
if (is_cpu_node)
|
|
daiclk = snd_soc_daifmt_clock_provider_flipped(daiclk);
|
|
|
|
dai_link->dai_fmt = daifmt | daiclk;
|
|
dai_link->init = asoc_simple_dai_init;
|
|
dai_link->ops = &graph_ops;
|
|
if (priv->ops)
|
|
dai_link->ops = priv->ops;
|
|
}
|
|
|
|
int audio_graph2_link_normal(struct asoc_simple_priv *priv,
|
|
struct device_node *lnk,
|
|
struct link_info *li)
|
|
{
|
|
struct device_node *cpu_port = lnk;
|
|
struct device_node *cpu_ep = port_to_endpoint(cpu_port);
|
|
struct device_node *codec_port = of_graph_get_remote_port(cpu_ep);
|
|
int ret;
|
|
|
|
/*
|
|
* call Codec first.
|
|
* see
|
|
* __graph_parse_node() :: DAI Naming
|
|
*/
|
|
ret = graph_parse_node(priv, GRAPH_NORMAL, codec_port, li, 0);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
/*
|
|
* call CPU, and set DAI Name
|
|
*/
|
|
ret = graph_parse_node(priv, GRAPH_NORMAL, cpu_port, li, 1);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
graph_link_init(priv, cpu_port, li, 1);
|
|
err:
|
|
of_node_put(codec_port);
|
|
of_node_put(cpu_ep);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(audio_graph2_link_normal);
|
|
|
|
int audio_graph2_link_dpcm(struct asoc_simple_priv *priv,
|
|
struct device_node *lnk,
|
|
struct link_info *li)
|
|
{
|
|
struct device_node *ep = port_to_endpoint(lnk);
|
|
struct device_node *rep = of_graph_get_remote_endpoint(ep);
|
|
struct device_node *rport = of_graph_get_remote_port(ep);
|
|
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
|
|
struct simple_dai_props *dai_props = simple_priv_to_props(priv, li->link);
|
|
int is_cpu = asoc_graph_is_ports0(lnk);
|
|
int ret;
|
|
|
|
if (is_cpu) {
|
|
/*
|
|
* dpcm {
|
|
* // Front-End
|
|
* ports@0 {
|
|
* => lnk: port@0 { ep: { ... = rep }; };
|
|
* ...
|
|
* };
|
|
* // Back-End
|
|
* ports@0 {
|
|
* ...
|
|
* };
|
|
* };
|
|
*
|
|
* CPU {
|
|
* rports: ports {
|
|
* rport: port@0 { rep: { ... = ep } };
|
|
* }
|
|
* }
|
|
*/
|
|
/*
|
|
* setup CPU here, Codec is already set as dummy.
|
|
* see
|
|
* asoc_simple_init_priv()
|
|
*/
|
|
dai_link->dynamic = 1;
|
|
dai_link->dpcm_merged_format = 1;
|
|
|
|
ret = graph_parse_node(priv, GRAPH_DPCM, rport, li, 1);
|
|
if (ret)
|
|
goto err;
|
|
} else {
|
|
/*
|
|
* dpcm {
|
|
* // Front-End
|
|
* ports@0 {
|
|
* ...
|
|
* };
|
|
* // Back-End
|
|
* ports@0 {
|
|
* => lnk: port@0 { ep: { ... = rep; }; };
|
|
* ...
|
|
* };
|
|
* };
|
|
*
|
|
* Codec {
|
|
* rports: ports {
|
|
* rport: port@0 { rep: { ... = ep; }; };
|
|
* }
|
|
* }
|
|
*/
|
|
/*
|
|
* setup Codec here, CPU is already set as dummy.
|
|
* see
|
|
* asoc_simple_init_priv()
|
|
*/
|
|
|
|
/* BE settings */
|
|
dai_link->no_pcm = 1;
|
|
dai_link->be_hw_params_fixup = asoc_simple_be_hw_params_fixup;
|
|
|
|
ret = graph_parse_node(priv, GRAPH_DPCM, rport, li, 0);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
graph_parse_convert(rep, dai_props);
|
|
|
|
snd_soc_dai_link_set_capabilities(dai_link);
|
|
|
|
graph_link_init(priv, rport, li, is_cpu);
|
|
err:
|
|
of_node_put(ep);
|
|
of_node_put(rep);
|
|
of_node_put(rport);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(audio_graph2_link_dpcm);
|
|
|
|
int audio_graph2_link_c2c(struct asoc_simple_priv *priv,
|
|
struct device_node *lnk,
|
|
struct link_info *li)
|
|
{
|
|
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, li->link);
|
|
struct device_node *port0, *port1, *ports;
|
|
struct device_node *codec0_port, *codec1_port;
|
|
struct device_node *ep0, *ep1;
|
|
u32 val = 0;
|
|
int ret = -EINVAL;
|
|
|
|
/*
|
|
* codec2codec {
|
|
* ports {
|
|
* rate = <48000>;
|
|
* => lnk: port@0 { c2c0_ep: { ... = codec0_ep; }; };
|
|
* port@1 { c2c1_ep: { ... = codec1_ep; }; };
|
|
* };
|
|
* };
|
|
*
|
|
* Codec {
|
|
* ports {
|
|
* port@0 { codec0_ep: ... }; };
|
|
* port@1 { codec1_ep: ... }; };
|
|
* };
|
|
* };
|
|
*/
|
|
of_node_get(lnk);
|
|
port0 = lnk;
|
|
ports = of_get_parent(port0);
|
|
port1 = of_get_next_child(ports, lnk);
|
|
|
|
/*
|
|
* Card2 can use original Codec2Codec settings if DT has.
|
|
* It will use default settings if no settings on DT.
|
|
* see
|
|
* asoc_simple_init_for_codec2codec()
|
|
*
|
|
* Add more settings here if needed
|
|
*/
|
|
of_property_read_u32(ports, "rate", &val);
|
|
if (val) {
|
|
struct device *dev = simple_priv_to_dev(priv);
|
|
struct snd_soc_pcm_stream *c2c_conf;
|
|
|
|
c2c_conf = devm_kzalloc(dev, sizeof(*c2c_conf), GFP_KERNEL);
|
|
if (!c2c_conf)
|
|
goto err1;
|
|
|
|
c2c_conf->formats = SNDRV_PCM_FMTBIT_S32_LE; /* update ME */
|
|
c2c_conf->rates = SNDRV_PCM_RATE_8000_384000;
|
|
c2c_conf->rate_min =
|
|
c2c_conf->rate_max = val;
|
|
c2c_conf->channels_min =
|
|
c2c_conf->channels_max = 2; /* update ME */
|
|
|
|
dai_link->params = c2c_conf;
|
|
dai_link->num_params = 1;
|
|
}
|
|
|
|
ep0 = port_to_endpoint(port0);
|
|
ep1 = port_to_endpoint(port1);
|
|
|
|
codec0_port = of_graph_get_remote_port(ep0);
|
|
codec1_port = of_graph_get_remote_port(ep1);
|
|
|
|
/*
|
|
* call Codec first.
|
|
* see
|
|
* __graph_parse_node() :: DAI Naming
|
|
*/
|
|
ret = graph_parse_node(priv, GRAPH_C2C, codec1_port, li, 0);
|
|
if (ret < 0)
|
|
goto err2;
|
|
|
|
/*
|
|
* call CPU, and set DAI Name
|
|
*/
|
|
ret = graph_parse_node(priv, GRAPH_C2C, codec0_port, li, 1);
|
|
if (ret < 0)
|
|
goto err2;
|
|
|
|
graph_link_init(priv, codec0_port, li, 1);
|
|
err2:
|
|
of_node_put(ep0);
|
|
of_node_put(ep1);
|
|
of_node_put(codec0_port);
|
|
of_node_put(codec1_port);
|
|
err1:
|
|
of_node_put(ports);
|
|
of_node_put(port0);
|
|
of_node_put(port1);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(audio_graph2_link_c2c);
|
|
|
|
static int graph_link(struct asoc_simple_priv *priv,
|
|
struct graph2_custom_hooks *hooks,
|
|
enum graph_type gtype,
|
|
struct device_node *lnk,
|
|
struct link_info *li)
|
|
{
|
|
struct device *dev = simple_priv_to_dev(priv);
|
|
GRAPH2_CUSTOM func = NULL;
|
|
int ret = -EINVAL;
|
|
|
|
switch (gtype) {
|
|
case GRAPH_NORMAL:
|
|
if (hooks && hooks->custom_normal)
|
|
func = hooks->custom_normal;
|
|
else
|
|
func = audio_graph2_link_normal;
|
|
break;
|
|
case GRAPH_DPCM:
|
|
if (hooks && hooks->custom_dpcm)
|
|
func = hooks->custom_dpcm;
|
|
else
|
|
func = audio_graph2_link_dpcm;
|
|
break;
|
|
case GRAPH_C2C:
|
|
if (hooks && hooks->custom_c2c)
|
|
func = hooks->custom_c2c;
|
|
else
|
|
func = audio_graph2_link_c2c;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!func) {
|
|
dev_err(dev, "non supported gtype (%d)\n", gtype);
|
|
goto err;
|
|
}
|
|
|
|
ret = func(priv, lnk, li);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
li->link++;
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static int graph_counter(struct device_node *lnk)
|
|
{
|
|
/*
|
|
* Multi CPU / Codec
|
|
*
|
|
* multi {
|
|
* ports {
|
|
* => lnk: port@0 { ... };
|
|
* port@1 { ... };
|
|
* port@2 { ... };
|
|
* ...
|
|
* };
|
|
* };
|
|
*
|
|
* ignore first lnk part
|
|
*/
|
|
if (graph_lnk_is_multi(lnk))
|
|
return of_graph_get_endpoint_count(of_get_parent(lnk)) - 1;
|
|
/*
|
|
* Single CPU / Codec
|
|
*/
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
static int graph_count_normal(struct asoc_simple_priv *priv,
|
|
struct device_node *lnk,
|
|
struct link_info *li)
|
|
{
|
|
struct device_node *cpu_port = lnk;
|
|
struct device_node *cpu_ep = port_to_endpoint(cpu_port);
|
|
struct device_node *codec_port = of_graph_get_remote_port(cpu_ep);
|
|
|
|
/*
|
|
* CPU {
|
|
* => lnk: port { endpoint { .. }; };
|
|
* };
|
|
*/
|
|
li->num[li->link].cpus =
|
|
li->num[li->link].platforms = graph_counter(cpu_port);
|
|
li->num[li->link].codecs = graph_counter(codec_port);
|
|
|
|
of_node_put(cpu_ep);
|
|
of_node_put(codec_port);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int graph_count_dpcm(struct asoc_simple_priv *priv,
|
|
struct device_node *lnk,
|
|
struct link_info *li)
|
|
{
|
|
struct device_node *ep = port_to_endpoint(lnk);
|
|
struct device_node *rport = of_graph_get_remote_port(ep);
|
|
|
|
/*
|
|
* dpcm {
|
|
* // Front-End
|
|
* ports@0 {
|
|
* => lnk: port@0 { endpoint { ... }; };
|
|
* ...
|
|
* };
|
|
* // Back-End
|
|
* ports@1 {
|
|
* => lnk: port@0 { endpoint { ... }; };
|
|
* ...
|
|
* };
|
|
* };
|
|
*/
|
|
|
|
if (asoc_graph_is_ports0(lnk)) {
|
|
li->num[li->link].cpus = graph_counter(rport); /* FE */
|
|
li->num[li->link].platforms = graph_counter(rport);
|
|
} else {
|
|
li->num[li->link].codecs = graph_counter(rport); /* BE */
|
|
}
|
|
|
|
of_node_put(ep);
|
|
of_node_put(rport);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int graph_count_c2c(struct asoc_simple_priv *priv,
|
|
struct device_node *lnk,
|
|
struct link_info *li)
|
|
{
|
|
struct device_node *ports = of_get_parent(lnk);
|
|
struct device_node *port0 = lnk;
|
|
struct device_node *port1 = of_get_next_child(ports, lnk);
|
|
struct device_node *ep0 = port_to_endpoint(port0);
|
|
struct device_node *ep1 = port_to_endpoint(port1);
|
|
struct device_node *codec0 = of_graph_get_remote_port(ep0);
|
|
struct device_node *codec1 = of_graph_get_remote_port(ep1);
|
|
|
|
of_node_get(lnk);
|
|
|
|
/*
|
|
* codec2codec {
|
|
* ports {
|
|
* => lnk: port@0 { endpoint { ... }; };
|
|
* port@1 { endpoint { ... }; };
|
|
* };
|
|
* };
|
|
*/
|
|
li->num[li->link].cpus =
|
|
li->num[li->link].platforms = graph_counter(codec0);
|
|
li->num[li->link].codecs = graph_counter(codec1);
|
|
|
|
of_node_put(ports);
|
|
of_node_put(port1);
|
|
of_node_put(ep0);
|
|
of_node_put(ep1);
|
|
of_node_put(codec0);
|
|
of_node_put(codec1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int graph_count(struct asoc_simple_priv *priv,
|
|
struct graph2_custom_hooks *hooks,
|
|
enum graph_type gtype,
|
|
struct device_node *lnk,
|
|
struct link_info *li)
|
|
{
|
|
struct device *dev = simple_priv_to_dev(priv);
|
|
GRAPH2_CUSTOM func = NULL;
|
|
int ret = -EINVAL;
|
|
|
|
if (li->link >= SNDRV_MAX_LINKS) {
|
|
dev_err(dev, "too many links\n");
|
|
return ret;
|
|
}
|
|
|
|
switch (gtype) {
|
|
case GRAPH_NORMAL:
|
|
func = graph_count_normal;
|
|
break;
|
|
case GRAPH_DPCM:
|
|
func = graph_count_dpcm;
|
|
break;
|
|
case GRAPH_C2C:
|
|
func = graph_count_c2c;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!func) {
|
|
dev_err(dev, "non supported gtype (%d)\n", gtype);
|
|
goto err;
|
|
}
|
|
|
|
ret = func(priv, lnk, li);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
li->link++;
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static int graph_for_each_link(struct asoc_simple_priv *priv,
|
|
struct graph2_custom_hooks *hooks,
|
|
struct link_info *li,
|
|
int (*func)(struct asoc_simple_priv *priv,
|
|
struct graph2_custom_hooks *hooks,
|
|
enum graph_type gtype,
|
|
struct device_node *lnk,
|
|
struct link_info *li))
|
|
{
|
|
struct of_phandle_iterator it;
|
|
struct device *dev = simple_priv_to_dev(priv);
|
|
struct device_node *node = dev->of_node;
|
|
struct device_node *lnk;
|
|
enum graph_type gtype;
|
|
int rc, ret;
|
|
|
|
/* loop for all listed CPU port */
|
|
of_for_each_phandle(&it, rc, node, "links", NULL, 0) {
|
|
lnk = it.node;
|
|
|
|
gtype = graph_get_type(priv, lnk);
|
|
|
|
ret = func(priv, hooks, gtype, lnk, li);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int audio_graph2_parse_of(struct asoc_simple_priv *priv, struct device *dev,
|
|
struct graph2_custom_hooks *hooks)
|
|
{
|
|
struct snd_soc_card *card = simple_priv_to_card(priv);
|
|
struct link_info *li;
|
|
int ret;
|
|
|
|
li = devm_kzalloc(dev, sizeof(*li), GFP_KERNEL);
|
|
if (!li)
|
|
return -ENOMEM;
|
|
|
|
card->probe = asoc_graph_card_probe;
|
|
card->owner = THIS_MODULE;
|
|
card->dev = dev;
|
|
|
|
if ((hooks) && (hooks)->hook_pre) {
|
|
ret = (hooks)->hook_pre(priv);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
ret = graph_for_each_link(priv, hooks, li, graph_count);
|
|
if (!li->link)
|
|
ret = -EINVAL;
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
ret = asoc_simple_init_priv(priv, li);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
priv->pa_gpio = devm_gpiod_get_optional(dev, "pa", GPIOD_OUT_LOW);
|
|
if (IS_ERR(priv->pa_gpio)) {
|
|
ret = PTR_ERR(priv->pa_gpio);
|
|
dev_err(dev, "failed to get amplifier gpio: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
ret = asoc_simple_parse_widgets(card, NULL);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
ret = asoc_simple_parse_routing(card, NULL);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
memset(li, 0, sizeof(*li));
|
|
ret = graph_for_each_link(priv, hooks, li, graph_link);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
ret = asoc_simple_parse_card_name(card, NULL);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
snd_soc_card_set_drvdata(card, priv);
|
|
|
|
if ((hooks) && (hooks)->hook_post) {
|
|
ret = (hooks)->hook_post(priv);
|
|
if (ret < 0)
|
|
goto err;
|
|
}
|
|
|
|
asoc_simple_debug_info(priv);
|
|
|
|
ret = devm_snd_soc_register_card(dev, card);
|
|
err:
|
|
devm_kfree(dev, li);
|
|
|
|
if (ret < 0)
|
|
dev_err_probe(dev, ret, "parse error\n");
|
|
|
|
if (ret == 0)
|
|
dev_warn(dev, "Audio Graph Card2 is still under Experimental stage\n");
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(audio_graph2_parse_of);
|
|
|
|
static int graph_probe(struct platform_device *pdev)
|
|
{
|
|
struct asoc_simple_priv *priv;
|
|
struct device *dev = &pdev->dev;
|
|
|
|
/* Allocate the private data and the DAI link array */
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
return audio_graph2_parse_of(priv, dev, NULL);
|
|
}
|
|
|
|
static const struct of_device_id graph_of_match[] = {
|
|
{ .compatible = "audio-graph-card2", },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, graph_of_match);
|
|
|
|
static struct platform_driver graph_card = {
|
|
.driver = {
|
|
.name = "asoc-audio-graph-card2",
|
|
.pm = &snd_soc_pm_ops,
|
|
.of_match_table = graph_of_match,
|
|
},
|
|
.probe = graph_probe,
|
|
.remove = asoc_simple_remove,
|
|
};
|
|
module_platform_driver(graph_card);
|
|
|
|
MODULE_ALIAS("platform:asoc-audio-graph-card2");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("ASoC Audio Graph Card2");
|
|
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|