Merge tag 'asoc-v6.5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v6.5

A fairly quiet release from a core and framework point of view, but a
very big one from the point of view of new drivers:

 - More refectoring from Morimoto-san, this time mainly around DAI
   links and how we control the ordering of trigger() callbacks.
 - Convert a lot of drivers to use maple tree based caches.
 - Lots of work on the x86 driver stack.
 - Compressed audio support for Qualcomm.
 - Support for AMD SoundWire, Analog Devices SSM3515, Google Chameleon,
   Ingenic X1000, Intel systems with various CODECs, Longsoon platforms,
   Maxim MAX98388, Mediatek MT8188, Nuvoton NAU8825C, NXP platforms with
   NAU8822, Qualcomm WSA884x, StarFive JH7110, Texas Instruments TAS2781.

1 files changed, 218 insertions, 0 deletions

diff --git a/sound/soc/loongson/loongson_card.c b/sound/soc/loongson/loongson_card.c
new file mode 100644
index 000000000000..9ded16329747
--- /dev/null
+++ b/sound/soc/loongson/loongson_card.c
@@ -0,0 +1,218 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Loongson ASoC Audio Machine driver
+//
+// Copyright (C) 2023 Loongson Technology Corporation Limited
+// Author: Yingkun Meng <mengyingkun@loongson.cn>
+//
+
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include <linux/acpi.h>
+#include <linux/pci.h>
+#include <sound/pcm_params.h>
+
+static char codec_name[SND_ACPI_I2C_ID_LEN];
+
+struct loongson_card_data {
+	struct snd_soc_card snd_card;
+	unsigned int mclk_fs;
+};
+
+static int loongson_card_hw_params(struct snd_pcm_substream *substream,
+				   struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	struct loongson_card_data *ls_card = snd_soc_card_get_drvdata(rtd->card);
+	int ret, mclk;
+
+	if (ls_card->mclk_fs) {
+		mclk = ls_card->mclk_fs * params_rate(params);
+		ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,
+					     SND_SOC_CLOCK_OUT);
+		if (ret < 0) {
+			dev_err(codec_dai->dev, "cpu_dai clock not set\n");
+			return ret;
+		}
+
+		ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+					     SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			dev_err(codec_dai->dev, "codec_dai clock not set\n");
+			return ret;
+		}
+	}
+	return 0;
+}
+
+static const struct snd_soc_ops loongson_ops = {
+	.hw_params = loongson_card_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(analog,
+	DAILINK_COMP_ARRAY(COMP_CPU("loongson-i2s")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link loongson_dai_links[] = {
+	{
+		.name = "Loongson Audio Port",
+		.stream_name = "Loongson Audio",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_IB_NF
+			| SND_SOC_DAIFMT_CBC_CFC,
+		SND_SOC_DAILINK_REG(analog),
+		.ops = &loongson_ops,
+	},
+};
+
+static int loongson_card_parse_acpi(struct loongson_card_data *data)
+{
+	struct snd_soc_card *card = &data->snd_card;
+	struct fwnode_handle *fwnode = card->dev->fwnode;
+	struct fwnode_reference_args args;
+	const char *codec_dai_name;
+	struct acpi_device *adev;
+	struct device *phy_dev;
+	int ret, i;
+
+	/* fixup platform name based on reference node */
+	memset(&args, 0, sizeof(args));
+	ret = acpi_node_get_property_reference(fwnode, "cpu", 0, &args);
+	if (ret || !is_acpi_device_node(args.fwnode)) {
+		dev_err(card->dev, "No matching phy in ACPI table\n");
+		return ret ?: -ENOENT;
+	}
+	adev = to_acpi_device_node(args.fwnode);
+	phy_dev = acpi_get_first_physical_node(adev);
+	if (!phy_dev)
+		return -EPROBE_DEFER;
+	for (i = 0; i < card->num_links; i++)
+		loongson_dai_links[i].platforms->name = dev_name(phy_dev);
+
+	/* fixup codec name based on reference node */
+	memset(&args, 0, sizeof(args));
+	ret = acpi_node_get_property_reference(fwnode, "codec", 0, &args);
+	if (ret || !is_acpi_device_node(args.fwnode)) {
+		dev_err(card->dev, "No matching phy in ACPI table\n");
+		return ret ?: -ENOENT;
+	}
+	adev = to_acpi_device_node(args.fwnode);
+	snprintf(codec_name, sizeof(codec_name), "i2c-%s", acpi_dev_name(adev));
+	for (i = 0; i < card->num_links; i++)
+		loongson_dai_links[i].codecs->name = codec_name;
+
+	device_property_read_string(card->dev, "codec-dai-name",
+				    &codec_dai_name);
+	for (i = 0; i < card->num_links; i++)
+		loongson_dai_links[i].codecs->dai_name = codec_dai_name;
+
+	return 0;
+}
+
+static int loongson_card_parse_of(struct loongson_card_data *data)
+{
+	struct device_node *cpu, *codec;
+	struct snd_soc_card *card = &data->snd_card;
+	struct device *dev = card->dev;
+	int ret, i;
+
+	cpu = of_get_child_by_name(dev->of_node, "cpu");
+	if (!cpu) {
+		dev_err(dev, "platform property missing or invalid\n");
+		return -EINVAL;
+	}
+	codec = of_get_child_by_name(dev->of_node, "codec");
+	if (!codec) {
+		dev_err(dev, "audio-codec property missing or invalid\n");
+		ret = -EINVAL;
+		goto err;
+	}
+
+	for (i = 0; i < card->num_links; i++) {
+		ret = snd_soc_of_get_dlc(cpu, NULL, loongson_dai_links[i].cpus, 0);
+		if (ret < 0) {
+			dev_err(dev, "getting cpu dlc error (%d)\n", ret);
+			goto err;
+		}
+
+		ret = snd_soc_of_get_dlc(codec, NULL, loongson_dai_links[i].codecs, 0);
+		if (ret < 0) {
+			dev_err(dev, "getting codec dlc error (%d)\n", ret);
+			goto err;
+		}
+	}
+
+	of_node_put(cpu);
+	of_node_put(codec);
+
+	return 0;
+
+err:
+	of_node_put(cpu);
+	of_node_put(codec);
+	return ret;
+}
+
+static int loongson_asoc_card_probe(struct platform_device *pdev)
+{
+	struct loongson_card_data *ls_priv;
+	struct snd_soc_card *card;
+	int ret;
+
+	ls_priv = devm_kzalloc(&pdev->dev, sizeof(*ls_priv), GFP_KERNEL);
+	if (!ls_priv)
+		return -ENOMEM;
+
+	card = &ls_priv->snd_card;
+
+	card->dev = &pdev->dev;
+	card->owner = THIS_MODULE;
+	card->dai_link = loongson_dai_links;
+	card->num_links = ARRAY_SIZE(loongson_dai_links);
+	snd_soc_card_set_drvdata(card, ls_priv);
+
+	ret = device_property_read_string(&pdev->dev, "model", &card->name);
+	if (ret) {
+		dev_err(&pdev->dev, "Error parsing card name: %d\n", ret);
+		return ret;
+	}
+	ret = device_property_read_u32(&pdev->dev, "mclk-fs", &ls_priv->mclk_fs);
+	if (ret) {
+		dev_err(&pdev->dev, "Error parsing mclk-fs: %d\n", ret);
+		return ret;
+	}
+
+	if (has_acpi_companion(&pdev->dev))
+		ret = loongson_card_parse_acpi(ls_priv);
+	else
+		ret = loongson_card_parse_of(ls_priv);
+	if (ret < 0)
+		return ret;
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+
+	return ret;
+}
+
+static const struct of_device_id loongson_asoc_dt_ids[] = {
+	{ .compatible = "loongson,ls-audio-card" },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, loongson_asoc_dt_ids);
+
+static struct platform_driver loongson_audio_driver = {
+	.probe = loongson_asoc_card_probe,
+	.driver = {
+		.name = "loongson-asoc-card",
+		.pm = &snd_soc_pm_ops,
+		.of_match_table = of_match_ptr(loongson_asoc_dt_ids),
+	},
+};
+module_platform_driver(loongson_audio_driver);
+
+MODULE_DESCRIPTION("Loongson ASoc Sound Card driver");
+MODULE_AUTHOR("Loongson Technology Corporation Limited");
+MODULE_LICENSE("GPL");