764 lines
18 KiB
C
764 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// ASoC simple sound card support
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//
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// Copyright (C) 2012 Renesas Solutions Corp.
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// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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#include <linux/clk.h>
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#include <linux/device.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/platform_device.h>
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#include <linux/string.h>
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#include <sound/simple_card.h>
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#include <sound/soc-dai.h>
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#include <sound/soc.h>
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#define DPCM_SELECTABLE 1
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#define DAI "sound-dai"
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#define CELL "#sound-dai-cells"
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#define PREFIX "simple-audio-card,"
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static const struct snd_soc_ops simple_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 asoc_simple_parse_platform(struct device_node *node,
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struct snd_soc_dai_link_component *dlc)
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{
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struct of_phandle_args args;
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int ret;
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if (!node)
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return 0;
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/*
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* Get node via "sound-dai = <&phandle port>"
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* it will be used as xxx_of_node on soc_bind_dai_link()
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*/
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ret = of_parse_phandle_with_args(node, DAI, CELL, 0, &args);
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if (ret)
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return ret;
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/* dai_name is not required and may not exist for plat component */
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dlc->of_node = args.np;
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return 0;
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}
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static int asoc_simple_parse_dai(struct device_node *node,
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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 of_phandle_args args;
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int ret;
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if (!node)
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return 0;
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/*
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* Get node via "sound-dai = <&phandle port>"
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* it will be used as xxx_of_node on soc_bind_dai_link()
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*/
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ret = of_parse_phandle_with_args(node, DAI, CELL, 0, &args);
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if (ret)
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return ret;
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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_of_get_dai_name(node, &dlc->dai_name);
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if (ret < 0)
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return ret;
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dlc->of_node = args.np;
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if (is_single_link)
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*is_single_link = !args.args_count;
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return 0;
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}
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static void simple_parse_convert(struct device *dev,
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struct device_node *np,
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struct asoc_simple_data *adata)
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{
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struct device_node *top = dev->of_node;
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struct device_node *node = of_get_parent(np);
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asoc_simple_parse_convert(top, PREFIX, adata);
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asoc_simple_parse_convert(node, PREFIX, adata);
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asoc_simple_parse_convert(node, NULL, adata);
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asoc_simple_parse_convert(np, NULL, adata);
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of_node_put(node);
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}
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static void simple_parse_mclk_fs(struct device_node *top,
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struct device_node *np,
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struct simple_dai_props *props,
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char *prefix)
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{
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struct device_node *node = of_get_parent(np);
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char prop[128];
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snprintf(prop, sizeof(prop), "%smclk-fs", PREFIX);
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of_property_read_u32(top, prop, &props->mclk_fs);
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snprintf(prop, sizeof(prop), "%smclk-fs", prefix);
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of_property_read_u32(node, prop, &props->mclk_fs);
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of_property_read_u32(np, prop, &props->mclk_fs);
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of_node_put(node);
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}
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static int simple_parse_node(struct asoc_simple_priv *priv,
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struct device_node *np,
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struct link_info *li,
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char *prefix,
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int *cpu)
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{
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struct device *dev = simple_priv_to_dev(priv);
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struct device_node *top = dev->of_node;
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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;
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if (cpu) {
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dlc = asoc_link_to_cpu(dai_link, 0);
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dai = simple_props_to_dai_cpu(dai_props, 0);
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} else {
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dlc = asoc_link_to_codec(dai_link, 0);
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dai = simple_props_to_dai_codec(dai_props, 0);
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}
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simple_parse_mclk_fs(top, np, dai_props, prefix);
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ret = asoc_simple_parse_dai(np, dlc, cpu);
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if (ret)
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return ret;
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ret = asoc_simple_parse_clk(dev, np, dai, dlc);
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if (ret)
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return ret;
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ret = asoc_simple_parse_tdm(np, dai);
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if (ret)
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return ret;
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return 0;
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}
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static int simple_link_init(struct asoc_simple_priv *priv,
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struct device_node *node,
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struct device_node *codec,
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struct link_info *li,
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char *prefix, char *name)
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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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int ret;
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ret = asoc_simple_parse_daifmt(dev, node, codec,
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prefix, &dai_link->dai_fmt);
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if (ret < 0)
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return 0;
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dai_link->init = asoc_simple_dai_init;
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dai_link->ops = &simple_ops;
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return asoc_simple_set_dailink_name(dev, dai_link, name);
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}
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static int simple_dai_link_of_dpcm(struct asoc_simple_priv *priv,
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struct device_node *np,
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struct device_node *codec,
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struct link_info *li,
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bool is_top)
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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 device_node *top = dev->of_node;
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struct device_node *node = of_get_parent(np);
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char *prefix = "";
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char dai_name[64];
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int ret;
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dev_dbg(dev, "link_of DPCM (%pOF)\n", np);
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/* For single DAI link & old style of DT node */
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if (is_top)
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prefix = PREFIX;
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if (li->cpu) {
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struct snd_soc_dai_link_component *cpus = asoc_link_to_cpu(dai_link, 0);
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struct snd_soc_dai_link_component *platforms = asoc_link_to_platform(dai_link, 0);
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int is_single_links = 0;
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/* Codec is dummy */
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/* FE settings */
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dai_link->dynamic = 1;
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dai_link->dpcm_merged_format = 1;
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ret = simple_parse_node(priv, np, li, prefix, &is_single_links);
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if (ret < 0)
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goto out_put_node;
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snprintf(dai_name, sizeof(dai_name), "fe.%s", cpus->dai_name);
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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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} else {
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struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, 0);
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struct snd_soc_codec_conf *cconf;
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/* CPU is dummy */
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/* BE settings */
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dai_link->no_pcm = 1;
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dai_link->be_hw_params_fixup = asoc_simple_be_hw_params_fixup;
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cconf = simple_props_to_codec_conf(dai_props, 0);
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ret = simple_parse_node(priv, np, li, prefix, NULL);
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if (ret < 0)
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goto out_put_node;
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snprintf(dai_name, sizeof(dai_name), "be.%s", codecs->dai_name);
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/* check "prefix" from top node */
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snd_soc_of_parse_node_prefix(top, cconf, codecs->of_node,
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PREFIX "prefix");
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snd_soc_of_parse_node_prefix(node, cconf, codecs->of_node,
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"prefix");
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snd_soc_of_parse_node_prefix(np, cconf, codecs->of_node,
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"prefix");
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}
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simple_parse_convert(dev, np, &dai_props->adata);
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snd_soc_dai_link_set_capabilities(dai_link);
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ret = simple_link_init(priv, node, codec, li, prefix, dai_name);
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out_put_node:
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li->link++;
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of_node_put(node);
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return ret;
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}
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static int simple_dai_link_of(struct asoc_simple_priv *priv,
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struct device_node *np,
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struct device_node *codec,
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struct link_info *li,
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bool is_top)
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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 snd_soc_dai_link_component *cpus = asoc_link_to_cpu(dai_link, 0);
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struct snd_soc_dai_link_component *codecs = asoc_link_to_codec(dai_link, 0);
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struct snd_soc_dai_link_component *platforms = asoc_link_to_platform(dai_link, 0);
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struct device_node *cpu = NULL;
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struct device_node *node = NULL;
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struct device_node *plat = NULL;
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char dai_name[64];
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char prop[128];
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char *prefix = "";
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int ret, single_cpu = 0;
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cpu = np;
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node = of_get_parent(np);
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dev_dbg(dev, "link_of (%pOF)\n", node);
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/* For single DAI link & old style of DT node */
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if (is_top)
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prefix = PREFIX;
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snprintf(prop, sizeof(prop), "%splat", prefix);
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plat = of_get_child_by_name(node, prop);
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ret = simple_parse_node(priv, cpu, li, prefix, &single_cpu);
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if (ret < 0)
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goto dai_link_of_err;
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ret = simple_parse_node(priv, codec, li, prefix, NULL);
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if (ret < 0)
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goto dai_link_of_err;
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ret = asoc_simple_parse_platform(plat, platforms);
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if (ret < 0)
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goto dai_link_of_err;
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snprintf(dai_name, sizeof(dai_name),
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"%s-%s", cpus->dai_name, codecs->dai_name);
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asoc_simple_canonicalize_cpu(cpus, single_cpu);
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asoc_simple_canonicalize_platform(platforms, cpus);
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ret = simple_link_init(priv, node, codec, li, prefix, dai_name);
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dai_link_of_err:
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of_node_put(plat);
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of_node_put(node);
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li->link++;
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return ret;
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}
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static int __simple_for_each_link(struct asoc_simple_priv *priv,
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struct link_info *li,
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int (*func_noml)(struct asoc_simple_priv *priv,
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struct device_node *np,
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struct device_node *codec,
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struct link_info *li, bool is_top),
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int (*func_dpcm)(struct asoc_simple_priv *priv,
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struct device_node *np,
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struct device_node *codec,
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struct link_info *li, bool is_top))
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{
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struct device *dev = simple_priv_to_dev(priv);
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struct device_node *top = dev->of_node;
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struct device_node *node;
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uintptr_t dpcm_selectable = (uintptr_t)of_device_get_match_data(dev);
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bool is_top = 0;
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int ret = 0;
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/* Check if it has dai-link */
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node = of_get_child_by_name(top, PREFIX "dai-link");
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if (!node) {
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node = of_node_get(top);
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is_top = 1;
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}
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/* loop for all dai-link */
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do {
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struct asoc_simple_data adata;
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struct device_node *codec;
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struct device_node *plat;
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struct device_node *np;
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int num = of_get_child_count(node);
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/* get codec */
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codec = of_get_child_by_name(node, is_top ?
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PREFIX "codec" : "codec");
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if (!codec) {
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ret = -ENODEV;
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goto error;
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}
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/* get platform */
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plat = of_get_child_by_name(node, is_top ?
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PREFIX "plat" : "plat");
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/* get convert-xxx property */
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memset(&adata, 0, sizeof(adata));
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for_each_child_of_node(node, np)
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simple_parse_convert(dev, np, &adata);
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/* loop for all CPU/Codec node */
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for_each_child_of_node(node, np) {
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if (plat == np)
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continue;
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/*
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* It is DPCM
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* if it has many CPUs,
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* or has convert-xxx property
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*/
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if (dpcm_selectable &&
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(num > 2 || asoc_simple_is_convert_required(&adata))) {
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/*
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* np
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* |1(CPU)|0(Codec) li->cpu
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* CPU |Pass |return
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* Codec |return|Pass
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*/
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if (li->cpu != (np == codec))
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ret = func_dpcm(priv, np, codec, li, is_top);
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/* else normal sound */
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} else {
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/*
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* np
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* |1(CPU)|0(Codec) li->cpu
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* CPU |Pass |return
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* Codec |return|return
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*/
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if (li->cpu && (np != codec))
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ret = func_noml(priv, np, codec, li, is_top);
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}
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if (ret < 0) {
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of_node_put(codec);
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of_node_put(plat);
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of_node_put(np);
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goto error;
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}
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}
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of_node_put(codec);
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node = of_get_next_child(top, node);
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} while (!is_top && node);
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error:
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of_node_put(node);
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return ret;
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}
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static int simple_for_each_link(struct asoc_simple_priv *priv,
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struct link_info *li,
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int (*func_noml)(struct asoc_simple_priv *priv,
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struct device_node *np,
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struct device_node *codec,
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struct link_info *li, bool is_top),
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int (*func_dpcm)(struct asoc_simple_priv *priv,
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struct device_node *np,
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struct device_node *codec,
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struct link_info *li, bool is_top))
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{
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int ret;
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/*
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* Detect all CPU first, and Detect all Codec 2nd.
|
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*
|
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* In Normal sound case, all DAIs are detected
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* as "CPU-Codec".
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*
|
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* In DPCM sound case,
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* all CPUs are detected as "CPU-dummy", and
|
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* all Codecs are detected as "dummy-Codec".
|
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* To avoid random sub-device numbering,
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* detect "dummy-Codec" in last;
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*/
|
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for (li->cpu = 1; li->cpu >= 0; li->cpu--) {
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ret = __simple_for_each_link(priv, li, func_noml, func_dpcm);
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if (ret < 0)
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break;
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}
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return ret;
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}
|
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|
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static int simple_parse_of(struct asoc_simple_priv *priv, struct link_info *li)
|
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{
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struct snd_soc_card *card = simple_priv_to_card(priv);
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int ret;
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ret = asoc_simple_parse_widgets(card, PREFIX);
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if (ret < 0)
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return ret;
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ret = asoc_simple_parse_routing(card, PREFIX);
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if (ret < 0)
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return ret;
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|
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ret = asoc_simple_parse_pin_switches(card, PREFIX);
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if (ret < 0)
|
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return ret;
|
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|
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/* Single/Muti DAI link(s) & New style of DT node */
|
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memset(li, 0, sizeof(*li));
|
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ret = simple_for_each_link(priv, li,
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simple_dai_link_of,
|
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simple_dai_link_of_dpcm);
|
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if (ret < 0)
|
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return ret;
|
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|
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ret = asoc_simple_parse_card_name(card, PREFIX);
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if (ret < 0)
|
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return ret;
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|
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ret = snd_soc_of_parse_aux_devs(card, PREFIX "aux-devs");
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|
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return ret;
|
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}
|
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|
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static int simple_count_noml(struct asoc_simple_priv *priv,
|
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struct device_node *np,
|
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struct device_node *codec,
|
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struct link_info *li, bool is_top)
|
|
{
|
|
if (li->link >= SNDRV_MAX_LINKS) {
|
|
struct device *dev = simple_priv_to_dev(priv);
|
|
|
|
dev_err(dev, "too many links\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
li->num[li->link].cpus = 1;
|
|
li->num[li->link].codecs = 1;
|
|
li->num[li->link].platforms = 1;
|
|
|
|
li->link += 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int simple_count_dpcm(struct asoc_simple_priv *priv,
|
|
struct device_node *np,
|
|
struct device_node *codec,
|
|
struct link_info *li, bool is_top)
|
|
{
|
|
if (li->link >= SNDRV_MAX_LINKS) {
|
|
struct device *dev = simple_priv_to_dev(priv);
|
|
|
|
dev_err(dev, "too many links\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (li->cpu) {
|
|
li->num[li->link].cpus = 1;
|
|
li->num[li->link].platforms = 1;
|
|
|
|
li->link++; /* CPU-dummy */
|
|
} else {
|
|
li->num[li->link].codecs = 1;
|
|
|
|
li->link++; /* dummy-Codec */
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int simple_get_dais_count(struct asoc_simple_priv *priv,
|
|
struct link_info *li)
|
|
{
|
|
struct device *dev = simple_priv_to_dev(priv);
|
|
struct device_node *top = dev->of_node;
|
|
|
|
/*
|
|
* 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
|
|
*
|
|
* ex4)
|
|
* CPU0 --- Codec0 (convert-rate) link : 3
|
|
* CPU1 --- Codec1 dais : 4
|
|
* ccnf : 1
|
|
*
|
|
* => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec
|
|
* => 4 DAIs = 2xCPU + 2xCodec
|
|
* => 1 ccnf = 1xdummy-Codec
|
|
*/
|
|
if (!top) {
|
|
li->num[0].cpus = 1;
|
|
li->num[0].codecs = 1;
|
|
li->num[0].platforms = 1;
|
|
|
|
li->link = 1;
|
|
return 0;
|
|
}
|
|
|
|
return simple_for_each_link(priv, li,
|
|
simple_count_noml,
|
|
simple_count_dpcm);
|
|
}
|
|
|
|
static int simple_soc_probe(struct snd_soc_card *card)
|
|
{
|
|
struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card);
|
|
char prop[128];
|
|
const char *hp_pin = NULL;
|
|
int ret;
|
|
|
|
snprintf(prop, sizeof(prop), "%shp-pin-name", PREFIX);
|
|
of_property_read_string(card->dev->of_node, prop, &hp_pin);
|
|
|
|
ret = asoc_simple_init_jack(card, &priv->hp_jack, 1, PREFIX, (char *)hp_pin);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = asoc_simple_init_mic(card, &priv->mic_jack, PREFIX);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int asoc_simple_probe(struct platform_device *pdev)
|
|
{
|
|
struct asoc_simple_priv *priv;
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *np = dev->of_node;
|
|
struct snd_soc_card *card;
|
|
struct link_info *li;
|
|
int ret;
|
|
|
|
/* Allocate the private data and the DAI link array */
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
card = simple_priv_to_card(priv);
|
|
card->owner = THIS_MODULE;
|
|
card->dev = dev;
|
|
card->probe = simple_soc_probe;
|
|
card->driver_name = "simple-card";
|
|
|
|
li = devm_kzalloc(dev, sizeof(*li), GFP_KERNEL);
|
|
if (!li)
|
|
return -ENOMEM;
|
|
|
|
ret = simple_get_dais_count(priv, li);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!li->link)
|
|
return -EINVAL;
|
|
|
|
ret = asoc_simple_init_priv(priv, li);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (np && of_device_is_available(np)) {
|
|
|
|
ret = simple_parse_of(priv, li);
|
|
if (ret < 0) {
|
|
dev_err_probe(dev, ret, "parse error\n");
|
|
goto err;
|
|
}
|
|
|
|
} else {
|
|
struct asoc_simple_card_info *cinfo;
|
|
struct snd_soc_dai_link_component *cpus;
|
|
struct snd_soc_dai_link_component *codecs;
|
|
struct snd_soc_dai_link_component *platform;
|
|
struct snd_soc_dai_link *dai_link = priv->dai_link;
|
|
struct simple_dai_props *dai_props = priv->dai_props;
|
|
|
|
ret = -EINVAL;
|
|
|
|
cinfo = dev->platform_data;
|
|
if (!cinfo) {
|
|
dev_err(dev, "no info for asoc-simple-card\n");
|
|
goto err;
|
|
}
|
|
|
|
if (!cinfo->name ||
|
|
!cinfo->codec_dai.name ||
|
|
!cinfo->codec ||
|
|
!cinfo->platform ||
|
|
!cinfo->cpu_dai.name) {
|
|
dev_err(dev, "insufficient asoc_simple_card_info settings\n");
|
|
goto err;
|
|
}
|
|
|
|
cpus = dai_link->cpus;
|
|
cpus->dai_name = cinfo->cpu_dai.name;
|
|
|
|
codecs = dai_link->codecs;
|
|
codecs->name = cinfo->codec;
|
|
codecs->dai_name = cinfo->codec_dai.name;
|
|
|
|
platform = dai_link->platforms;
|
|
platform->name = cinfo->platform;
|
|
|
|
card->name = (cinfo->card) ? cinfo->card : cinfo->name;
|
|
dai_link->name = cinfo->name;
|
|
dai_link->stream_name = cinfo->name;
|
|
dai_link->dai_fmt = cinfo->daifmt;
|
|
dai_link->init = asoc_simple_dai_init;
|
|
memcpy(dai_props->cpu_dai, &cinfo->cpu_dai,
|
|
sizeof(*dai_props->cpu_dai));
|
|
memcpy(dai_props->codec_dai, &cinfo->codec_dai,
|
|
sizeof(*dai_props->codec_dai));
|
|
}
|
|
|
|
snd_soc_card_set_drvdata(card, priv);
|
|
|
|
asoc_simple_debug_info(priv);
|
|
|
|
ret = devm_snd_soc_register_card(dev, card);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
devm_kfree(dev, li);
|
|
return 0;
|
|
err:
|
|
asoc_simple_clean_reference(card);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct of_device_id simple_of_match[] = {
|
|
{ .compatible = "simple-audio-card", },
|
|
{ .compatible = "simple-scu-audio-card",
|
|
.data = (void *)DPCM_SELECTABLE },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, simple_of_match);
|
|
|
|
static struct platform_driver asoc_simple_card = {
|
|
.driver = {
|
|
.name = "asoc-simple-card",
|
|
.pm = &snd_soc_pm_ops,
|
|
.of_match_table = simple_of_match,
|
|
},
|
|
.probe = asoc_simple_probe,
|
|
.remove = asoc_simple_remove,
|
|
};
|
|
|
|
module_platform_driver(asoc_simple_card);
|
|
|
|
MODULE_ALIAS("platform:asoc-simple-card");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("ASoC Simple Sound Card");
|
|
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|