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1281 lines
28 KiB
1281 lines
28 KiB
// 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 <[email protected]> |
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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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|
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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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|
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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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************************************ |
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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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************************************ |
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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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|
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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@1 { 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@0 { mcodec1_ep: endpoint { remote-endpoint = <&codec1_ep>; }; }; |
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(y) port@1 { 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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|
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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; |
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|
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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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np = of_get_parent(np); |
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if (of_node_name_eq(np, GRAPH_NODENAME_MULTI)) |
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return GRAPH_MULTI; |
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if (of_node_name_eq(np, GRAPH_NODENAME_DPCM)) |
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return GRAPH_DPCM; |
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if (of_node_name_eq(np, GRAPH_NODENAME_C2C)) |
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return GRAPH_C2C; |
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return GRAPH_NORMAL; |
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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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return ret; |
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dlc->of_node = node; |
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|
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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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|
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return 0; |
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} |
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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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|
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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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|
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of_node_put(port); |
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of_node_put(ports); |
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} |
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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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|
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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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|
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of_node_put(port); |
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of_node_put(ports); |
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} |
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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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|
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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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|
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graph_parse_mclk_fs(ep, dai_props); |
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|
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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_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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|
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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) { |
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case GRAPH_NORMAL: |
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/* run is_cpu only. see audio_graph2_link_normal() */ |
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if (is_cpu) |
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asoc_simple_set_dailink_name(dev, dai_link, "%s%s-%s%s", |
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cpus->dai_name, cpu_multi, |
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codecs->dai_name, codec_multi); |
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break; |
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case GRAPH_DPCM: |
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if (is_cpu) |
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asoc_simple_set_dailink_name(dev, dai_link, "fe.%pOFP.%s%s", |
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cpus->of_node, cpus->dai_name, cpu_multi); |
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else |
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asoc_simple_set_dailink_name(dev, dai_link, "be.%pOFP.%s%s", |
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codecs->of_node, codecs->dai_name, codec_multi); |
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break; |
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case GRAPH_C2C: |
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/* run is_cpu only. see audio_graph2_link_c2c() */ |
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if (is_cpu) |
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asoc_simple_set_dailink_name(dev, dai_link, "c2c.%s%s-%s%s", |
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cpus->dai_name, cpu_multi, |
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codecs->dai_name, codec_multi); |
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break; |
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default: |
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break; |
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} |
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} |
|
|
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/* |
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* Check "prefix" from top node |
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* if DPCM-BE case |
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*/ |
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if (!is_cpu && gtype == GRAPH_DPCM) { |
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struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, idx); |
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struct snd_soc_codec_conf *cconf = simple_props_to_codec_conf(dai_props, idx); |
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struct device_node *rport = of_get_parent(ep); |
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struct device_node *rports = of_get_parent(rport); |
|
|
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if (of_node_name_eq(rports, "ports")) |
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snd_soc_of_parse_node_prefix(rports, cconf, codecs->of_node, "prefix"); |
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snd_soc_of_parse_node_prefix(rport, cconf, codecs->of_node, "prefix"); |
|
|
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of_node_put(rport); |
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of_node_put(rports); |
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} |
|
|
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if (is_cpu) { |
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struct snd_soc_dai_link_component *cpus = dlc; |
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struct snd_soc_dai_link_component *platforms = asoc_link_to_platform(dai_link, idx); |
|
|
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asoc_simple_canonicalize_cpu(cpus, is_single_links); |
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asoc_simple_canonicalize_platform(platforms, cpus); |
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} |
|
|
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return 0; |
|
} |
|
|
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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 *port, |
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struct link_info *li, int is_cpu) |
|
{ |
|
struct device_node *ep; |
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int ret = 0; |
|
|
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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_fliped(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 simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); |
|
struct snd_soc_pcm_stream *c2c_conf = dai_props->c2c_conf; |
|
struct device_node *port0, *port1, *ports; |
|
struct device_node *codec0_port, *codec1_port; |
|
struct device_node *ep0, *ep1; |
|
u32 val; |
|
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); |
|
|
|
if (!of_get_property(ports, "rate", &val)) { |
|
struct device *dev = simple_priv_to_dev(priv); |
|
|
|
dev_err(dev, "Codec2Codec needs rate settings\n"); |
|
goto err1; |
|
} |
|
|
|
c2c_conf->formats = SNDRV_PCM_FMTBIT_S32_LE; /* update ME */ |
|
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; |
|
|
|
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); |
|
li->num[li->link].c2c = 1; |
|
|
|
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; |
|
|
|
dev_warn(dev, "Audio Graph Card2 is still under Experimental stage\n"); |
|
|
|
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"); |
|
|
|
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 <[email protected]>");
|
|
|