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720 lines
17 KiB
720 lines
17 KiB
// 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 <[email protected]> |
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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_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(dev, top, PREFIX, adata); |
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asoc_simple_parse_convert(dev, node, PREFIX, adata); |
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asoc_simple_parse_convert(dev, node, NULL, adata); |
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asoc_simple_parse_convert(dev, 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 *cpu, |
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struct device_node *codec, |
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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(cpu); |
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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(cpu, prop, &props->mclk_fs); |
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of_property_read_u32(codec, prop, &props->mclk_fs); |
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of_node_put(node); |
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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 asoc_simple_dai *dai; |
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struct snd_soc_dai_link_component *cpus = dai_link->cpus; |
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struct snd_soc_dai_link_component *codecs = dai_link->codecs; |
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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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int ret; |
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/* |
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* |CPU |Codec : turn |
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* CPU |Pass |return |
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* Codec |return|Pass |
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* np |
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*/ |
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if (li->cpu == (np == codec)) |
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return 0; |
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dev_dbg(dev, "link_of DPCM (%pOF)\n", np); |
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li->link++; |
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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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int is_single_links = 0; |
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/* Codec is dummy */ |
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codecs->of_node = NULL; |
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codecs->dai_name = "snd-soc-dummy-dai"; |
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codecs->name = "snd-soc-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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dai = |
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dai_props->cpu_dai = &priv->dais[li->dais++]; |
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ret = asoc_simple_parse_cpu(np, dai_link, &is_single_links); |
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if (ret) |
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goto out_put_node; |
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ret = asoc_simple_parse_clk_cpu(dev, np, dai_link, dai); |
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if (ret < 0) |
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goto out_put_node; |
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ret = asoc_simple_set_dailink_name(dev, dai_link, |
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"fe.%s", |
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cpus->dai_name); |
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if (ret < 0) |
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goto out_put_node; |
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asoc_simple_canonicalize_cpu(dai_link, is_single_links); |
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} else { |
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struct snd_soc_codec_conf *cconf; |
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/* CPU is dummy */ |
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cpus->of_node = NULL; |
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cpus->dai_name = "snd-soc-dummy-dai"; |
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cpus->name = "snd-soc-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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dai = |
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dai_props->codec_dai = &priv->dais[li->dais++]; |
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cconf = |
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dai_props->codec_conf = &priv->codec_conf[li->conf++]; |
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ret = asoc_simple_parse_codec(np, dai_link); |
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if (ret < 0) |
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goto out_put_node; |
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ret = asoc_simple_parse_clk_codec(dev, np, dai_link, dai); |
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if (ret < 0) |
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goto out_put_node; |
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ret = asoc_simple_set_dailink_name(dev, dai_link, |
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"be.%s", |
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codecs->dai_name); |
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if (ret < 0) |
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goto out_put_node; |
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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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simple_parse_mclk_fs(top, np, codec, dai_props, prefix); |
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asoc_simple_canonicalize_platform(dai_link); |
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ret = asoc_simple_parse_tdm(np, dai); |
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if (ret) |
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goto out_put_node; |
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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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goto out_put_node; |
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snd_soc_dai_link_set_capabilities(dai_link); |
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dai_link->ops = &simple_ops; |
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dai_link->init = asoc_simple_dai_init; |
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out_put_node: |
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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 simple_dai_props *dai_props = simple_priv_to_props(priv, li->link); |
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struct asoc_simple_dai *cpu_dai; |
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struct asoc_simple_dai *codec_dai; |
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struct device_node *top = dev->of_node; |
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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 prop[128]; |
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char *prefix = ""; |
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int ret, single_cpu = 0; |
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/* |
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* |CPU |Codec : turn |
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* CPU |Pass |return |
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* Codec |return|return |
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* np |
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*/ |
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if (!li->cpu || np == codec) |
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return 0; |
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cpu = np; |
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node = of_get_parent(np); |
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li->link++; |
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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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cpu_dai = |
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dai_props->cpu_dai = &priv->dais[li->dais++]; |
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codec_dai = |
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dai_props->codec_dai = &priv->dais[li->dais++]; |
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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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goto dai_link_of_err; |
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simple_parse_mclk_fs(top, cpu, codec, dai_props, prefix); |
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ret = asoc_simple_parse_cpu(cpu, dai_link, &single_cpu); |
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if (ret < 0) |
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goto dai_link_of_err; |
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ret = asoc_simple_parse_codec(codec, dai_link); |
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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, dai_link); |
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if (ret < 0) |
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goto dai_link_of_err; |
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ret = asoc_simple_parse_tdm(cpu, cpu_dai); |
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if (ret < 0) |
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goto dai_link_of_err; |
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ret = asoc_simple_parse_tdm(codec, codec_dai); |
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if (ret < 0) |
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goto dai_link_of_err; |
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ret = asoc_simple_parse_clk_cpu(dev, cpu, dai_link, cpu_dai); |
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if (ret < 0) |
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goto dai_link_of_err; |
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ret = asoc_simple_parse_clk_codec(dev, codec, dai_link, codec_dai); |
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if (ret < 0) |
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goto dai_link_of_err; |
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ret = asoc_simple_set_dailink_name(dev, dai_link, |
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"%s-%s", |
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dai_link->cpus->dai_name, |
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dai_link->codecs->dai_name); |
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if (ret < 0) |
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goto dai_link_of_err; |
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dai_link->ops = &simple_ops; |
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dai_link->init = asoc_simple_dai_init; |
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asoc_simple_canonicalize_cpu(dai_link, single_cpu); |
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asoc_simple_canonicalize_platform(dai_link); |
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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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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 || |
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adata.convert_rate || adata.convert_channels)) |
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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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ret = func_noml(priv, np, codec, li, is_top); |
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if (ret < 0) { |
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of_node_put(codec); |
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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_parse_of(struct asoc_simple_priv *priv) |
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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_card *card = simple_priv_to_card(priv); |
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struct link_info li; |
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int ret; |
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if (!top) |
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return -EINVAL; |
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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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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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/* Single/Muti DAI link(s) & New style of DT node */ |
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memset(&li, 0, sizeof(li)); |
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for (li.cpu = 1; li.cpu >= 0; li.cpu--) { |
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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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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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ret = snd_soc_of_parse_aux_devs(card, PREFIX "aux-devs"); |
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return ret; |
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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) |
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{ |
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li->dais++; /* CPU or Codec */ |
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if (np != codec) |
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li->link++; /* CPU-Codec */ |
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return 0; |
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} |
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static int simple_count_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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li->dais++; /* CPU or Codec */ |
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li->link++; /* CPU-dummy or dummy-Codec */ |
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if (np == codec) |
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li->conf++; |
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return 0; |
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} |
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static void simple_get_dais_count(struct asoc_simple_priv *priv, |
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struct link_info *li) |
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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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|
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/* |
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* link_num : number of links. |
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* CPU-Codec / CPU-dummy / dummy-Codec |
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* dais_num : number of DAIs |
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* ccnf_num : number of codec_conf |
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* same number for "dummy-Codec" |
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* |
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* ex1) |
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* CPU0 --- Codec0 link : 5 |
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* CPU1 --- Codec1 dais : 7 |
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* CPU2 -/ ccnf : 1 |
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* CPU3 --- Codec2 |
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* |
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* => 5 links = 2xCPU-Codec + 2xCPU-dummy + 1xdummy-Codec |
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* => 7 DAIs = 4xCPU + 3xCodec |
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* => 1 ccnf = 1xdummy-Codec |
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* |
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* ex2) |
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* CPU0 --- Codec0 link : 5 |
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* CPU1 --- Codec1 dais : 6 |
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* CPU2 -/ ccnf : 1 |
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* CPU3 -/ |
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* |
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* => 5 links = 1xCPU-Codec + 3xCPU-dummy + 1xdummy-Codec |
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* => 6 DAIs = 4xCPU + 2xCodec |
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* => 1 ccnf = 1xdummy-Codec |
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* |
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* ex3) |
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* CPU0 --- Codec0 link : 6 |
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* CPU1 -/ dais : 6 |
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* CPU2 --- Codec1 ccnf : 2 |
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* CPU3 -/ |
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* |
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* => 6 links = 0xCPU-Codec + 4xCPU-dummy + 2xdummy-Codec |
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* => 6 DAIs = 4xCPU + 2xCodec |
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* => 2 ccnf = 2xdummy-Codec |
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* |
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* ex4) |
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* CPU0 --- Codec0 (convert-rate) link : 3 |
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* CPU1 --- Codec1 dais : 4 |
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* ccnf : 1 |
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* |
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* => 3 links = 1xCPU-Codec + 1xCPU-dummy + 1xdummy-Codec |
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* => 4 DAIs = 2xCPU + 2xCodec |
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* => 1 ccnf = 1xdummy-Codec |
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*/ |
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if (!top) { |
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li->link = 1; |
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li->dais = 2; |
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li->conf = 0; |
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return; |
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} |
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simple_for_each_link(priv, li, |
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simple_count_noml, |
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simple_count_dpcm); |
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|
|
dev_dbg(dev, "link %d, dais %d, ccnf %d\n", |
|
li->link, li->dais, li->conf); |
|
} |
|
|
|
static int simple_soc_probe(struct snd_soc_card *card) |
|
{ |
|
struct asoc_simple_priv *priv = snd_soc_card_get_drvdata(card); |
|
int ret; |
|
|
|
ret = asoc_simple_init_hp(card, &priv->hp_jack, PREFIX); |
|
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; |
|
|
|
memset(&li, 0, sizeof(li)); |
|
simple_get_dais_count(priv, &li); |
|
if (!li.link || !li.dais) |
|
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); |
|
if (ret < 0) { |
|
if (ret != -EPROBE_DEFER) |
|
dev_err(dev, "parse error %d\n", ret); |
|
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; |
|
|
|
int dai_idx = 0; |
|
|
|
cinfo = dev->platform_data; |
|
if (!cinfo) { |
|
dev_err(dev, "no info for asoc-simple-card\n"); |
|
return -EINVAL; |
|
} |
|
|
|
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"); |
|
return -EINVAL; |
|
} |
|
|
|
dai_props->cpu_dai = &priv->dais[dai_idx++]; |
|
dai_props->codec_dai = &priv->dais[dai_idx++]; |
|
|
|
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; |
|
|
|
return 0; |
|
err: |
|
asoc_simple_clean_reference(card); |
|
|
|
return ret; |
|
} |
|
|
|
static int asoc_simple_remove(struct platform_device *pdev) |
|
{ |
|
struct snd_soc_card *card = platform_get_drvdata(pdev); |
|
|
|
return asoc_simple_clean_reference(card); |
|
} |
|
|
|
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 <[email protected]>");
|
|
|