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>
+++ /dev/null
-ASoC simple SCU Sound Card
-
-Simple-Card specifies audio DAI connections of SoC <-> codec.
-
-Required properties:
-
-- compatible : "simple-scu-audio-card"
- "renesas,rsrc-card"
-
-Optional properties:
-
-- simple-audio-card,name : User specified audio sound card name, one string
- property.
-- simple-audio-card,cpu : CPU sub-node
-- simple-audio-card,codec : CODEC sub-node
-
-Optional subnode properties:
-
-- simple-audio-card,format : CPU/CODEC common audio format.
- "i2s", "right_j", "left_j" , "dsp_a"
- "dsp_b", "ac97", "pdm", "msb", "lsb"
-- simple-audio-card,frame-master : Indicates dai-link frame master.
- phandle to a cpu or codec subnode.
-- simple-audio-card,bitclock-master : Indicates dai-link bit clock master.
- phandle to a cpu or codec subnode.
-- simple-audio-card,bitclock-inversion : bool property. Add this if the
- dai-link uses bit clock inversion.
-- simple-audio-card,frame-inversion : bool property. Add this if the
- dai-link uses frame clock inversion.
-- simple-audio-card,convert-rate : platform specified sampling rate convert
-- simple-audio-card,convert-channels : platform specified converted channel size (2 - 8 ch)
-- simple-audio-card,prefix : see audio-routing
-- simple-audio-card,routing : A list of the connections between audio components.
- Each entry is a pair of strings, the first being the connection's sink,
- the second being the connection's source. Valid names for sources.
- use audio-prefix if some components is using same sink/sources naming.
- it can be used if compatible was "renesas,rsrc-card";
-
-Required CPU/CODEC subnodes properties:
-
-- sound-dai : phandle and port of CPU/CODEC
-
-Optional CPU/CODEC subnodes properties:
-
-- clocks / system-clock-frequency : specify subnode's clock if needed.
- it can be specified via "clocks" if system has
- clock node (= common clock), or "system-clock-frequency"
- (if system doens't support common clock)
- If a clock is specified, it is
- enabled with clk_prepare_enable()
- in dai startup() and disabled with
- clk_disable_unprepare() in dai
- shutdown().
-
-Example
-
-sound {
- compatible = "simple-scu-audio-card";
-
- simple-audio-card,name = "rsnd-ak4643";
- simple-audio-card,format = "left_j";
- simple-audio-card,format = "left_j";
- simple-audio-card,bitclock-master = <&sndcodec>;
- simple-audio-card,frame-master = <&sndcodec>;
-
- simple-audio-card,convert-rate = <48000>; /* see audio_clk_a */
-
- simple-audio-card,prefix = "ak4642";
- simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
- "DAI0 Capture", "ak4642 Capture";
-
- sndcpu: simple-audio-card,cpu {
- sound-dai = <&rcar_sound>;
- };
-
- sndcodec: simple-audio-card,codec {
- sound-dai = <&ak4643>;
- system-clock-frequency = <11289600>;
- };
-};
--- /dev/null
+ASoC simple SCU Sound Card
+
+Simple-Card specifies audio DAI connections of SoC <-> codec.
+
+Required properties:
+
+- compatible : "simple-scu-audio-card"
+ "renesas,rsrc-card"
+
+Optional properties:
+
+- simple-audio-card,name : User specified audio sound card name, one string
+ property.
+- simple-audio-card,cpu : CPU sub-node
+- simple-audio-card,codec : CODEC sub-node
+
+Optional subnode properties:
+
+- simple-audio-card,format : CPU/CODEC common audio format.
+ "i2s", "right_j", "left_j" , "dsp_a"
+ "dsp_b", "ac97", "pdm", "msb", "lsb"
+- simple-audio-card,frame-master : Indicates dai-link frame master.
+ phandle to a cpu or codec subnode.
+- simple-audio-card,bitclock-master : Indicates dai-link bit clock master.
+ phandle to a cpu or codec subnode.
+- simple-audio-card,bitclock-inversion : bool property. Add this if the
+ dai-link uses bit clock inversion.
+- simple-audio-card,frame-inversion : bool property. Add this if the
+ dai-link uses frame clock inversion.
+- simple-audio-card,convert-rate : platform specified sampling rate convert
+- simple-audio-card,convert-channels : platform specified converted channel size (2 - 8 ch)
+- simple-audio-card,prefix : see audio-routing
+- simple-audio-card,routing : A list of the connections between audio components.
+ Each entry is a pair of strings, the first being the connection's sink,
+ the second being the connection's source. Valid names for sources.
+ use audio-prefix if some components is using same sink/sources naming.
+ it can be used if compatible was "renesas,rsrc-card";
+
+Required CPU/CODEC subnodes properties:
+
+- sound-dai : phandle and port of CPU/CODEC
+
+Optional CPU/CODEC subnodes properties:
+
+- clocks / system-clock-frequency : specify subnode's clock if needed.
+ it can be specified via "clocks" if system has
+ clock node (= common clock), or "system-clock-frequency"
+ (if system doens't support common clock)
+ If a clock is specified, it is
+ enabled with clk_prepare_enable()
+ in dai startup() and disabled with
+ clk_disable_unprepare() in dai
+ shutdown().
+
+Example
+
+sound {
+ compatible = "simple-scu-audio-card";
+
+ simple-audio-card,name = "rsnd-ak4643";
+ simple-audio-card,format = "left_j";
+ simple-audio-card,format = "left_j";
+ simple-audio-card,bitclock-master = <&sndcodec>;
+ simple-audio-card,frame-master = <&sndcodec>;
+
+ simple-audio-card,convert-rate = <48000>; /* see audio_clk_a */
+
+ simple-audio-card,prefix = "ak4642";
+ simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
+ "DAI0 Capture", "ak4642 Capture";
+
+ sndcpu: simple-audio-card,cpu {
+ sound-dai = <&rcar_sound>;
+ };
+
+ sndcodec: simple-audio-card,codec {
+ sound-dai = <&ak4643>;
+ system-clock-frequency = <11289600>;
+ };
+};
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.
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
--- /dev/null
+/*
+ * 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>");
help
This option enables R-Car SRU/SCU/SSIU/SSI sound support
-config SND_SOC_RSRC_CARD
- tristate "Renesas Sampling Rate Convert Sound Card"
- select SND_SIMPLE_CARD_UTILS
- help
- This option enables simple sound if you need sampling rate convert
-
##
## Boards
##
snd-soc-rcar-objs := core.o gen.o dma.o adg.o ssi.o ssiu.o src.o ctu.o mix.o dvc.o cmd.o
obj-$(CONFIG_SND_SOC_RCAR) += snd-soc-rcar.o
-
-snd-soc-rsrc-card-objs := rsrc-card.o
-obj-$(CONFIG_SND_SOC_RSRC_CARD) += snd-soc-rsrc-card.o
+++ /dev/null
-/*
- * 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>");
projects / cascardo / linux.git / commitdiff