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author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2016-08-23 04:35:02 +0300 |
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committer | Mark Brown <broonie@kernel.org> | 2016-08-24 13:19:16 +0300 |
commit | d12c6216c4a58f9fd2a58bc489783a095d84b2fc (patch) | |
tree | 8e4d89b54dc9f3cc1f137edca2533aec164e4ce2 /sound/soc/generic | |
parent | 64df0e6842925311d74f6944710495981d5a0ace (diff) | |
download | linux-d12c6216c4a58f9fd2a58bc489783a095d84b2fc.tar.xz |
ASoC: rsrc-card: rename rsrc-card to simple-scu-card phase3
rsrc-card which is using DPCM feature was created for Renesas sound.
But not only Renesas, but many SoC can use this driver, because
it is based on simple-card driver.
To use it as more open driver, rsrc-card will be renamed to
simple-scu-card. In order to easy patch review, as 3rd step,
this patch moves rsrc-card driver to generic folder.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/generic')
-rw-r--r-- | sound/soc/generic/Kconfig | 7 | ||||
-rw-r--r-- | sound/soc/generic/Makefile | 2 | ||||
-rw-r--r-- | sound/soc/generic/simple-scu-card.c | 361 |
3 files changed, 370 insertions, 0 deletions
diff --git a/sound/soc/generic/Kconfig b/sound/soc/generic/Kconfig index c01c5dd68601..2d0ff037c5a1 100644 --- a/sound/soc/generic/Kconfig +++ b/sound/soc/generic/Kconfig @@ -6,3 +6,10 @@ config SND_SIMPLE_CARD select SND_SIMPLE_CARD_UTILS help This option enables generic simple sound card support + +config SND_SIMPLE_SCU_CARD + tristate "ASoC Simple SCU sound card support" + select SND_SIMPLE_CARD_UTILS + help + This option enables generic simple SCU sound card support. + It supports DPCM of multi CPU single Codec ststem. diff --git a/sound/soc/generic/Makefile b/sound/soc/generic/Makefile index 2d53c8d70705..ee750f3023ba 100644 --- a/sound/soc/generic/Makefile +++ b/sound/soc/generic/Makefile @@ -1,5 +1,7 @@ snd-soc-simple-card-utils-objs := simple-card-utils.o snd-soc-simple-card-objs := simple-card.o +snd-soc-simple-scu-card-objs := simple-scu-card.o obj-$(CONFIG_SND_SIMPLE_CARD_UTILS) += snd-soc-simple-card-utils.o obj-$(CONFIG_SND_SIMPLE_CARD) += snd-soc-simple-card.o +obj-$(CONFIG_SND_SIMPLE_SCU_CARD) += snd-soc-simple-scu-card.o diff --git a/sound/soc/generic/simple-scu-card.c b/sound/soc/generic/simple-scu-card.c new file mode 100644 index 000000000000..3fa19084e326 --- /dev/null +++ b/sound/soc/generic/simple-scu-card.c @@ -0,0 +1,361 @@ +/* + * ASoC simple SCU sound card support + * + * Copyright (C) 2015 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * based on ${LINUX}/sound/soc/generic/simple-card.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/string.h> +#include <sound/jack.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> +#include <sound/simple_card_utils.h> + +struct asoc_simple_card_of_data { + const char *prefix; + const struct snd_soc_dapm_route *routes; + int num_routes; +}; + +static const struct of_device_id asoc_simple_card_of_match[] = { + { .compatible = "renesas,rsrc-card", }, + { .compatible = "simple-scu-audio-card", }, + {}, +}; +MODULE_DEVICE_TABLE(of, asoc_simple_card_of_match); + +#define IDX_CPU 0 +#define IDX_CODEC 1 +struct asoc_simple_card_priv { + struct snd_soc_card snd_card; + struct snd_soc_codec_conf codec_conf; + struct asoc_simple_dai *dai_props; + struct snd_soc_dai_link *dai_link; + u32 convert_rate; + u32 convert_channels; +}; + +#define simple_priv_to_dev(priv) ((priv)->snd_card.dev) +#define simple_priv_to_link(priv, i) ((priv)->snd_card.dai_link + (i)) +#define simple_priv_to_props(priv, i) ((priv)->dai_props + (i)) + +#define DAI "sound-dai" +#define CELL "#sound-dai-cells" +#define PREFIX "simple-audio-card," + +static int asoc_simple_card_startup(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct asoc_simple_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); + struct asoc_simple_dai *dai_props = + simple_priv_to_props(priv, rtd->num); + + return clk_prepare_enable(dai_props->clk); +} + +static void asoc_simple_card_shutdown(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct asoc_simple_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); + struct asoc_simple_dai *dai_props = + simple_priv_to_props(priv, rtd->num); + + clk_disable_unprepare(dai_props->clk); +} + +static struct snd_soc_ops asoc_simple_card_ops = { + .startup = asoc_simple_card_startup, + .shutdown = asoc_simple_card_shutdown, +}; + +static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd) +{ + struct asoc_simple_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); + struct snd_soc_dai *dai; + struct snd_soc_dai_link *dai_link; + struct asoc_simple_dai *dai_props; + int num = rtd->num; + + dai_link = simple_priv_to_link(priv, num); + dai_props = simple_priv_to_props(priv, num); + dai = dai_link->dynamic ? + rtd->cpu_dai : + rtd->codec_dai; + + return asoc_simple_card_init_dai(dai, dai_props); +} + +static int asoc_simple_card_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_hw_params *params) +{ + struct asoc_simple_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); + struct snd_interval *rate = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval *channels = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + + if (priv->convert_rate) + rate->min = + rate->max = priv->convert_rate; + + if (priv->convert_channels) + channels->min = + channels->max = priv->convert_channels; + + return 0; +} + +static int asoc_simple_card_parse_links(struct device_node *np, + struct asoc_simple_card_priv *priv, + int idx, bool is_fe) +{ + struct device *dev = simple_priv_to_dev(priv); + struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx); + struct asoc_simple_dai *dai_props = simple_priv_to_props(priv, idx); + int ret; + + /* Parse TDM slot */ + ret = snd_soc_of_parse_tdm_slot(np, + &dai_props->tx_slot_mask, + &dai_props->rx_slot_mask, + &dai_props->slots, + &dai_props->slot_width); + if (ret) + return ret; + + if (is_fe) { + int is_single_links = 0; + + /* BE is dummy */ + dai_link->codec_of_node = NULL; + dai_link->codec_dai_name = "snd-soc-dummy-dai"; + dai_link->codec_name = "snd-soc-dummy"; + + /* FE settings */ + dai_link->dynamic = 1; + dai_link->dpcm_merged_format = 1; + + ret = asoc_simple_card_parse_cpu(np, dai_link, DAI, CELL, + &is_single_links); + if (ret) + return ret; + + ret = asoc_simple_card_parse_clk_cpu(np, dai_link, dai_props); + 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; + + asoc_simple_card_canonicalize_cpu(dai_link, is_single_links); + } else { + /* 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_simple_card_be_hw_params_fixup; + + ret = asoc_simple_card_parse_codec(np, dai_link, DAI, CELL); + if (ret < 0) + return ret; + + ret = asoc_simple_card_parse_clk_codec(np, dai_link, dai_props); + if (ret < 0) + return ret; + + ret = asoc_simple_card_set_dailink_name(dev, dai_link, + "be.%s", + dai_link->codec_dai_name); + if (ret < 0) + return ret; + + snd_soc_of_parse_audio_prefix(&priv->snd_card, + &priv->codec_conf, + dai_link->codec_of_node, + PREFIX "prefix"); + } + + ret = asoc_simple_card_canonicalize_dailink(dai_link); + if (ret < 0) + return ret; + + dai_link->dpcm_playback = 1; + dai_link->dpcm_capture = 1; + dai_link->ops = &asoc_simple_card_ops; + dai_link->init = asoc_simple_card_dai_init; + + dev_dbg(dev, "\t%s / %04x / %d\n", + dai_link->name, + dai_link->dai_fmt, + dai_props->sysclk); + + return 0; +} + +static int asoc_simple_card_dai_link_of(struct device_node *node, + struct asoc_simple_card_priv *priv) +{ + struct device *dev = simple_priv_to_dev(priv); + struct snd_soc_dai_link *dai_link; + struct device_node *np; + unsigned int daifmt = 0; + int ret, i; + bool is_fe; + + /* find 1st codec */ + i = 0; + for_each_child_of_node(node, np) { + dai_link = simple_priv_to_link(priv, i); + + if (strcmp(np->name, PREFIX "codec") == 0) { + ret = asoc_simple_card_parse_daifmt(dev, node, np, + PREFIX, &daifmt); + if (ret < 0) + return ret; + break; + } + i++; + } + + i = 0; + for_each_child_of_node(node, np) { + dai_link = simple_priv_to_link(priv, i); + dai_link->dai_fmt = daifmt; + + is_fe = false; + if (strcmp(np->name, PREFIX "cpu") == 0) + is_fe = true; + + ret = asoc_simple_card_parse_links(np, priv, i, is_fe); + if (ret < 0) + return ret; + i++; + } + + return 0; +} + +static int asoc_simple_card_parse_of(struct device_node *node, + struct asoc_simple_card_priv *priv, + struct device *dev) +{ + struct asoc_simple_dai *props; + struct snd_soc_dai_link *links; + int ret; + int num; + + if (!node) + return -EINVAL; + + num = of_get_child_count(node); + props = devm_kzalloc(dev, sizeof(*props) * num, GFP_KERNEL); + links = devm_kzalloc(dev, sizeof(*links) * num, GFP_KERNEL); + if (!props || !links) + return -ENOMEM; + + priv->dai_props = props; + priv->dai_link = links; + + /* Init snd_soc_card */ + priv->snd_card.owner = THIS_MODULE; + priv->snd_card.dev = dev; + priv->snd_card.dai_link = priv->dai_link; + priv->snd_card.num_links = num; + priv->snd_card.codec_conf = &priv->codec_conf; + priv->snd_card.num_configs = 1; + + ret = snd_soc_of_parse_audio_routing(&priv->snd_card, PREFIX "routing"); + if (ret < 0) + return ret; + + /* sampling rate convert */ + of_property_read_u32(node, PREFIX "convert-rate", &priv->convert_rate); + + /* channels transfer */ + of_property_read_u32(node, PREFIX "convert-channels", &priv->convert_channels); + + ret = asoc_simple_card_dai_link_of(node, priv); + if (ret < 0) + return ret; + + ret = asoc_simple_card_parse_card_name(&priv->snd_card, PREFIX); + if (ret < 0) + return ret; + + dev_dbg(dev, "New card: %s\n", + priv->snd_card.name ? priv->snd_card.name : ""); + dev_dbg(dev, "convert_rate %d\n", priv->convert_rate); + dev_dbg(dev, "convert_channels %d\n", priv->convert_channels); + + return 0; +} + +static int asoc_simple_card_probe(struct platform_device *pdev) +{ + struct asoc_simple_card_priv *priv; + struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + int ret; + + /* Allocate the private data */ + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + ret = asoc_simple_card_parse_of(np, priv, dev); + if (ret < 0) { + if (ret != -EPROBE_DEFER) + dev_err(dev, "parse error %d\n", ret); + goto err; + } + + snd_soc_card_set_drvdata(&priv->snd_card, priv); + + ret = devm_snd_soc_register_card(&pdev->dev, &priv->snd_card); + if (ret >= 0) + return ret; +err: + asoc_simple_card_clean_reference(&priv->snd_card); + + return ret; +} + +static int asoc_simple_card_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = platform_get_drvdata(pdev); + + return asoc_simple_card_clean_reference(card); +} + +static struct platform_driver asoc_simple_card = { + .driver = { + .name = "simple-scu-audio-card", + .of_match_table = asoc_simple_card_of_match, + }, + .probe = asoc_simple_card_probe, + .remove = asoc_simple_card_remove, +}; + +module_platform_driver(asoc_simple_card); + +MODULE_ALIAS("platform:asoc-simple-scu-card"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("ASoC Simple SCU Sound Card"); +MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); |