+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-//
-// ASoC audio graph SCU sound card support
-//
-// Copyright (C) 2017 Renesas Solutions Corp.
-// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
-//
-// based on
-// ${LINUX}/sound/soc/generic/simple-scu-card.c
-// ${LINUX}/sound/soc/generic/audio-graph-card.c
-
-#include <linux/clk.h>
-#include <linux/device.h>
-#include <linux/gpio.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_gpio.h>
-#include <linux/of_graph.h>
-#include <linux/platform_device.h>
-#include <linux/string.h>
-#include <sound/jack.h>
-#include <sound/simple_card_utils.h>
-
-struct graph_card_data {
- struct snd_soc_card snd_card;
- struct graph_dai_props {
- struct asoc_simple_dai *cpu_dai;
- struct asoc_simple_dai *codec_dai;
- struct snd_soc_dai_link_component codecs;
- struct snd_soc_dai_link_component platform;
- struct asoc_simple_card_data adata;
- struct snd_soc_codec_conf *codec_conf;
- } *dai_props;
- struct snd_soc_dai_link *dai_link;
- struct asoc_simple_dai *dais;
- struct asoc_simple_card_data adata;
- struct snd_soc_codec_conf *codec_conf;
-};
-
-#define graph_priv_to_card(priv) (&(priv)->snd_card)
-#define graph_priv_to_props(priv, i) ((priv)->dai_props + (i))
-#define graph_priv_to_dev(priv) (graph_priv_to_card(priv)->dev)
-#define graph_priv_to_link(priv, i) (graph_priv_to_card(priv)->dai_link + (i))
-
-#define PREFIX "audio-graph-card,"
-
-static int asoc_graph_card_startup(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct graph_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
- struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num);
- int ret = 0;
-
- ret = asoc_simple_card_clk_enable(dai_props->cpu_dai);
- if (ret)
- return ret;
-
- ret = asoc_simple_card_clk_enable(dai_props->codec_dai);
- if (ret)
- asoc_simple_card_clk_disable(dai_props->cpu_dai);
-
- return ret;
-}
-
-static void asoc_graph_card_shutdown(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct graph_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
- struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num);
-
- asoc_simple_card_clk_disable(dai_props->cpu_dai);
-
- asoc_simple_card_clk_disable(dai_props->codec_dai);
-}
-
-static const struct snd_soc_ops asoc_graph_card_ops = {
- .startup = asoc_graph_card_startup,
- .shutdown = asoc_graph_card_shutdown,
-};
-
-static int asoc_graph_card_dai_init(struct snd_soc_pcm_runtime *rtd)
-{
- struct graph_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
- struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num);
- int ret = 0;
-
- ret = asoc_simple_card_init_dai(rtd->codec_dai,
- dai_props->codec_dai);
- if (ret < 0)
- return ret;
-
- ret = asoc_simple_card_init_dai(rtd->cpu_dai,
- dai_props->cpu_dai);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int asoc_graph_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
- struct snd_pcm_hw_params *params)
-{
- struct graph_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
- struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num);
-
- asoc_simple_card_convert_fixup(&dai_props->adata, params);
-
- /* overwrite by top level adata if exist */
- asoc_simple_card_convert_fixup(&priv->adata, params);
-
- return 0;
-}
-
-static int asoc_graph_card_dai_link_of(struct device_node *cpu_ep,
- struct device_node *codec_ep,
- struct graph_card_data *priv,
- int *dai_idx, int link_idx,
- int *conf_idx, int is_fe)
-{
- struct device *dev = graph_priv_to_dev(priv);
- struct snd_soc_dai_link *dai_link = graph_priv_to_link(priv, link_idx);
- struct graph_dai_props *dai_props = graph_priv_to_props(priv, link_idx);
- struct snd_soc_card *card = graph_priv_to_card(priv);
- struct device_node *ep = is_fe ? cpu_ep : codec_ep;
- struct device_node *node = of_graph_get_port_parent(ep);
- struct asoc_simple_dai *dai;
- int ret;
-
- if (is_fe) {
- struct snd_soc_dai_link_component *codecs;
-
- /* BE is dummy */
- codecs = dai_link->codecs;
- codecs->of_node = NULL;
- codecs->dai_name = "snd-soc-dummy-dai";
- codecs->name = "snd-soc-dummy";
-
- /* FE settings */
- dai_link->dynamic = 1;
- dai_link->dpcm_merged_format = 1;
-
- dai =
- dai_props->cpu_dai = &priv->dais[(*dai_idx)++];
-
- ret = asoc_simple_card_parse_graph_cpu(ep, dai_link);
- if (ret)
- return ret;
-
- ret = asoc_simple_card_parse_clk_cpu(dev, ep, dai_link, dai);
- if (ret < 0)
- return ret;
-
- ret = asoc_simple_card_set_dailink_name(dev, dai_link,
- "fe.%s",
- dai_link->cpu_dai_name);
- if (ret < 0)
- return ret;
-
- /* card->num_links includes Codec */
- asoc_simple_card_canonicalize_cpu(dai_link,
- of_graph_get_endpoint_count(dai_link->cpu_of_node) == 1);
- } else {
- struct snd_soc_codec_conf *cconf;
-
- /* FE is dummy */
- dai_link->cpu_of_node = NULL;
- dai_link->cpu_dai_name = "snd-soc-dummy-dai";
- dai_link->cpu_name = "snd-soc-dummy";
-
- /* BE settings */
- dai_link->no_pcm = 1;
- dai_link->be_hw_params_fixup = asoc_graph_card_be_hw_params_fixup;
-
- dai =
- dai_props->codec_dai = &priv->dais[(*dai_idx)++];
-
- cconf =
- dai_props->codec_conf = &priv->codec_conf[(*conf_idx)++];
-
- ret = asoc_simple_card_parse_graph_codec(ep, dai_link);
- if (ret < 0)
- return ret;
-
- ret = asoc_simple_card_parse_clk_codec(dev, ep, dai_link, dai);
- if (ret < 0)
- return ret;
-
- ret = asoc_simple_card_set_dailink_name(dev, dai_link,
- "be.%s",
- dai_link->codecs->dai_name);
- if (ret < 0)
- return ret;
-
- /* check "prefix" from top node */
- snd_soc_of_parse_audio_prefix(card, cconf,
- dai_link->codecs->of_node,
- "prefix");
- /* check "prefix" from each node if top doesn't have */
- if (!cconf->of_node)
- snd_soc_of_parse_node_prefix(node, cconf,
- dai_link->codecs->of_node,
- PREFIX "prefix");
- }
-
- asoc_simple_card_parse_convert(dev, node, PREFIX, &dai_props->adata);
-
- ret = asoc_simple_card_of_parse_tdm(ep, dai);
- if (ret)
- return ret;
-
- ret = asoc_simple_card_canonicalize_dailink(dai_link);
- if (ret < 0)
- return ret;
-
- ret = asoc_simple_card_parse_daifmt(dev, cpu_ep, codec_ep,
- NULL, &dai_link->dai_fmt);
- if (ret < 0)
- return ret;
-
- dai_link->dpcm_playback = 1;
- dai_link->dpcm_capture = 1;
- dai_link->ops = &asoc_graph_card_ops;
- dai_link->init = asoc_graph_card_dai_init;
-
- return 0;
-}
-
-static int asoc_graph_card_parse_of(struct graph_card_data *priv)
-{
- struct of_phandle_iterator it;
- struct device *dev = graph_priv_to_dev(priv);
- struct snd_soc_card *card = graph_priv_to_card(priv);
- struct device_node *node = dev->of_node;
- struct device_node *cpu_port;
- struct device_node *cpu_ep;
- struct device_node *codec_ep;
- struct device_node *codec_port;
- struct device_node *codec_port_old;
- int dai_idx, link_idx, conf_idx, ret;
- int rc, codec;
-
- if (!node)
- return -EINVAL;
-
- /*
- * we need to consider "widgets", "mclk-fs" around here
- * see simple-card
- */
-
- ret = asoc_simple_card_of_parse_routing(card, NULL);
- if (ret < 0)
- return ret;
-
- asoc_simple_card_parse_convert(dev, node, NULL, &priv->adata);
-
- /*
- * it supports multi CPU, single CODEC only here
- * see asoc_graph_get_dais_count
- */
-
- link_idx = 0;
- dai_idx = 0;
- conf_idx = 0;
- codec_port_old = NULL;
- for (codec = 0; codec < 2; codec++) {
- /*
- * To listup valid sounds continuously,
- * detect all CPU-dummy first, and
- * detect all dummy-Codec second
- */
- of_for_each_phandle(&it, rc, node, "dais", NULL, 0) {
- cpu_port = it.node;
- cpu_ep = of_get_next_child(cpu_port, NULL);
- codec_ep = of_graph_get_remote_endpoint(cpu_ep);
- codec_port = of_graph_get_port_parent(codec_ep);
-
- of_node_put(cpu_ep);
- of_node_put(codec_ep);
- of_node_put(cpu_port);
- of_node_put(codec_port);
- it.node = NULL;
-
- if (codec) {
- if (codec_port_old == codec_port)
- continue;
-
- codec_port_old = codec_port;
- }
-
- ret = asoc_graph_card_dai_link_of(cpu_ep, codec_ep,
- priv, &dai_idx,
- link_idx++, &conf_idx,
- !codec);
- if (ret < 0)
- goto parse_of_err;
- }
- }
-
- ret = asoc_simple_card_parse_card_name(card, NULL);
- if (ret)
- goto parse_of_err;
-
- if ((card->num_links != link_idx) ||
- (card->num_configs != conf_idx)) {
- dev_err(dev, "dai_link or codec_config wrong (%d/%d, %d/%d)\n",
- card->num_links, link_idx, card->num_configs, conf_idx);
- ret = -EINVAL;
- goto parse_of_err;
- }
-
- ret = 0;
-
-parse_of_err:
- return ret;
-}
-
-static void asoc_graph_get_dais_count(struct device *dev,
- int *link_num,
- int *dais_num,
- int *ccnf_num)
-{
- struct of_phandle_iterator it;
- struct device_node *node = dev->of_node;
- struct device_node *cpu_port;
- struct device_node *cpu_ep;
- struct device_node *codec_ep;
- struct device_node *codec_port;
- struct device_node *codec_port_old;
- struct device_node *codec_port_old2;
- int rc;
-
- /*
- * link_num : number of links.
- * CPU-Codec / CPU-dummy / dummy-Codec
- * dais_num : number of DAIs
- * ccnf_num : number of codec_conf
- * same number for dummy-Codec
- *
- * ex1)
- * CPU0 --- Codec0 link : 5
- * CPU1 --- Codec1 dais : 7
- * CPU2 -/ ccnf : 1
- * CPU3 --- Codec2
- *
- * => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec
- * => 7 DAIs = 4xCPU + 3xCodec
- * => 1 ccnf = 1xdummy-Codec
- *
- * ex2)
- * CPU0 --- Codec0 link : 5
- * CPU1 --- Codec1 dais : 6
- * CPU2 -/ ccnf : 1
- * CPU3 -/
- *
- * => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec
- * => 6 DAIs = 4xCPU + 2xCodec
- * => 1 ccnf = 1xdummy-Codec
- *
- * ex3)
- * CPU0 --- Codec0 link : 6
- * CPU1 -/ dais : 6
- * CPU2 --- Codec1 ccnf : 2
- * CPU3 -/
- *
- * => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec
- * => 6 DAIs = 4xCPU + 2xCodec
- * => 2 ccnf = 2xdummy-Codec
- */
- codec_port_old = NULL;
- codec_port_old2 = NULL;
- of_for_each_phandle(&it, rc, node, "dais", NULL, 0) {
- cpu_port = it.node;
- cpu_ep = of_get_next_child(cpu_port, NULL);
- codec_ep = of_graph_get_remote_endpoint(cpu_ep);
- codec_port = of_graph_get_port_parent(codec_ep);
-
- of_node_put(cpu_ep);
- of_node_put(codec_ep);
- of_node_put(codec_port);
-
- (*link_num)++;
- (*dais_num)++;
-
- if (codec_port_old == codec_port) {
- if (codec_port_old2 != codec_port_old) {
- (*link_num)++;
- (*ccnf_num)++;
- }
-
- codec_port_old2 = codec_port_old;
- continue;
- }
-
- (*dais_num)++;
- codec_port_old = codec_port;
- }
-}
-
-static int asoc_graph_card_probe(struct platform_device *pdev)
-{
- struct graph_card_data *priv;
- struct snd_soc_dai_link *dai_link;
- struct graph_dai_props *dai_props;
- struct asoc_simple_dai *dais;
- struct device *dev = &pdev->dev;
- struct snd_soc_card *card;
- struct snd_soc_codec_conf *cconf;
- int lnum = 0, dnum = 0, cnum = 0;
- int ret, i;
-
- /* Allocate the private data and the DAI link array */
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- asoc_graph_get_dais_count(dev, &lnum, &dnum, &cnum);
- if (!lnum || !dnum)
- return -EINVAL;
-
- dai_props = devm_kcalloc(dev, lnum, sizeof(*dai_props), GFP_KERNEL);
- dai_link = devm_kcalloc(dev, lnum, sizeof(*dai_link), GFP_KERNEL);
- dais = devm_kcalloc(dev, dnum, sizeof(*dais), GFP_KERNEL);
- cconf = devm_kcalloc(dev, cnum, sizeof(*cconf), GFP_KERNEL);
- if (!dai_props || !dai_link || !dais)
- return -ENOMEM;
-
- /*
- * Use snd_soc_dai_link_component instead of legacy style
- * It is codec only. but cpu/platform will be supported in the future.
- * see
- * soc-core.c :: snd_soc_init_multicodec()
- */
- for (i = 0; i < lnum; i++) {
- dai_link[i].codecs = &dai_props[i].codecs;
- dai_link[i].num_codecs = 1;
- dai_link[i].platform = &dai_props[i].platform;
- }
-
- priv->dai_props = dai_props;
- priv->dai_link = dai_link;
- priv->dais = dais;
- priv->codec_conf = cconf;
-
- /* Init snd_soc_card */
- card = graph_priv_to_card(priv);
- card->owner = THIS_MODULE;
- card->dev = dev;
- card->dai_link = priv->dai_link;
- card->num_links = lnum;
- card->codec_conf = cconf;
- card->num_configs = cnum;
-
- ret = asoc_graph_card_parse_of(priv);
- if (ret < 0) {
- if (ret != -EPROBE_DEFER)
- dev_err(dev, "parse error %d\n", ret);
- goto err;
- }
-
- snd_soc_card_set_drvdata(card, priv);
-
- ret = devm_snd_soc_register_card(dev, card);
- if (ret < 0)
- goto err;
-
- return 0;
-err:
- asoc_simple_card_clean_reference(card);
-
- return ret;
-}
-
-static int asoc_graph_card_remove(struct platform_device *pdev)
-{
- struct snd_soc_card *card = platform_get_drvdata(pdev);
-
- return asoc_simple_card_clean_reference(card);
-}
-
-static const struct of_device_id asoc_graph_of_match[] = {
- { .compatible = "audio-graph-scu-card", },
- {},
-};
-MODULE_DEVICE_TABLE(of, asoc_graph_of_match);
-
-static struct platform_driver asoc_graph_card = {
- .driver = {
- .name = "asoc-audio-graph-scu-card",
- .pm = &snd_soc_pm_ops,
- .of_match_table = asoc_graph_of_match,
- },
- .probe = asoc_graph_card_probe,
- .remove = asoc_graph_card_remove,
-};
-module_platform_driver(asoc_graph_card);
-
-MODULE_ALIAS("platform:asoc-audio-graph-scu-card");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("ASoC Audio Graph SCU Sound Card");
-MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
projects / platform / kernel / linux-rpi.git / commitdiff