Merge tag 'asoc-v6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v6.19

This is a very large set of updates, as well as some more extensive
cleanup work from Morimto-san we've also added a generic SCDA class
driver for SoundWire devices enabling us to support many chips with
no custom code.  There's also a batch of new drivers added for both
SoCs and CODECs.

 - Added a SoundWire SCDA generic class driver, pulling in a little
   regmap work to support it.
 - A *lot* of cleaup and API improvement work from Morimoto-san.
 - Lots of work on the existing Cirrus, Intel, Maxim and Qualcomm
   drivers.
 - Support for Allwinner A523, Mediatek MT8189, Qualcomm QCM2290,
   QRB2210 and SM6115, SpacemiT K1, and TI TAS2568, TAS5802, TAS5806,
   TAS5815, TAS5828 and TAS5830.

This also pulls in some gpiolib changes supporting shared GPIOs in the
core there so we can convert some of the ASoC drivers open coding
handling of that to the core functionality.

1 files changed, 460 insertions, 0 deletions

diff --git a/sound/soc/sdca/sdca_class_function.c b/sound/soc/sdca/sdca_class_function.c
new file mode 100644
index 000000000000..0028482a1e75
--- /dev/null
+++ b/sound/soc/sdca/sdca_class_function.c
@@ -0,0 +1,460 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2025 Cirrus Logic, Inc. and
+//                    Cirrus Logic International Semiconductor Ltd.
+
+/*
+ * The MIPI SDCA specification is available for public downloads at
+ * https://www.mipi.org/mipi-sdca-v1-0-download
+ */
+
+#include <linux/auxiliary_bus.h>
+#include <linux/minmax.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_registers.h>
+#include <sound/pcm.h>
+#include <sound/sdca_asoc.h>
+#include <sound/sdca_fdl.h>
+#include <sound/sdca_function.h>
+#include <sound/sdca_interrupts.h>
+#include <sound/sdca_regmap.h>
+#include <sound/sdw.h>
+#include <sound/soc-component.h>
+#include <sound/soc-dai.h>
+#include <sound/soc.h>
+#include "sdca_class.h"
+
+struct class_function_drv {
+	struct device *dev;
+	struct regmap *regmap;
+	struct sdca_class_drv *core;
+
+	struct sdca_function_data *function;
+};
+
+static void class_function_regmap_lock(void *data)
+{
+	struct mutex *lock = data;
+
+	mutex_lock(lock);
+}
+
+static void class_function_regmap_unlock(void *data)
+{
+	struct mutex *lock = data;
+
+	mutex_unlock(lock);
+}
+
+static bool class_function_regmap_writeable(struct device *dev, unsigned int reg)
+{
+	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
+	struct class_function_drv *drv = auxiliary_get_drvdata(auxdev);
+
+	return sdca_regmap_writeable(drv->function, reg);
+}
+
+static bool class_function_regmap_readable(struct device *dev, unsigned int reg)
+{
+	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
+	struct class_function_drv *drv = auxiliary_get_drvdata(auxdev);
+
+	return sdca_regmap_readable(drv->function, reg);
+}
+
+static bool class_function_regmap_volatile(struct device *dev, unsigned int reg)
+{
+	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
+	struct class_function_drv *drv = auxiliary_get_drvdata(auxdev);
+
+	return sdca_regmap_volatile(drv->function, reg);
+}
+
+static const struct regmap_config class_function_regmap_config = {
+	.name			= "sdca",
+	.reg_bits		= 32,
+	.val_bits		= 32,
+	.reg_format_endian	= REGMAP_ENDIAN_LITTLE,
+	.val_format_endian	= REGMAP_ENDIAN_LITTLE,
+
+	.max_register		= SDW_SDCA_MAX_REGISTER,
+	.readable_reg		= class_function_regmap_readable,
+	.writeable_reg		= class_function_regmap_writeable,
+	.volatile_reg		= class_function_regmap_volatile,
+
+	.cache_type		= REGCACHE_MAPLE,
+
+	.lock			= class_function_regmap_lock,
+	.unlock			= class_function_regmap_unlock,
+};
+
+static int class_function_regmap_mbq_size(struct device *dev, unsigned int reg)
+{
+	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
+	struct class_function_drv *drv = auxiliary_get_drvdata(auxdev);
+
+	return sdca_regmap_mbq_size(drv->function, reg);
+}
+
+static bool class_function_regmap_deferrable(struct device *dev, unsigned int reg)
+{
+	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
+	struct class_function_drv *drv = auxiliary_get_drvdata(auxdev);
+
+	return sdca_regmap_deferrable(drv->function, reg);
+}
+
+static const struct regmap_sdw_mbq_cfg class_function_mbq_config = {
+	.mbq_size		= class_function_regmap_mbq_size,
+	.deferrable		= class_function_regmap_deferrable,
+	.retry_us		= 1000,
+	.timeout_us		= 10000,
+};
+
+static int class_function_startup(struct snd_pcm_substream *substream,
+				  struct snd_soc_dai *dai)
+{
+	struct class_function_drv *drv = snd_soc_component_get_drvdata(dai->component);
+
+	return sdca_asoc_set_constraints(drv->dev, drv->regmap, drv->function,
+					 substream, dai);
+}
+
+static int class_function_sdw_add_peripheral(struct snd_pcm_substream *substream,
+					     struct snd_pcm_hw_params *params,
+					     struct snd_soc_dai *dai)
+{
+	struct class_function_drv *drv = snd_soc_component_get_drvdata(dai->component);
+	struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
+	struct sdw_slave *sdw = dev_to_sdw_dev(drv->dev->parent);
+	struct sdw_stream_config sconfig = {0};
+	struct sdw_port_config pconfig = {0};
+	int ret;
+
+	if (!sdw_stream)
+		return -EINVAL;
+
+	snd_sdw_params_to_config(substream, params, &sconfig, &pconfig);
+
+	/*
+	 * FIXME: As also noted in sdca_asoc_get_port(), currently only
+	 * a single unshared port is supported for each DAI.
+	 */
+	ret = sdca_asoc_get_port(drv->dev, drv->regmap, drv->function, dai);
+	if (ret < 0)
+		return ret;
+
+	pconfig.num = ret;
+
+	ret = sdw_stream_add_slave(sdw, &sconfig, &pconfig, 1, sdw_stream);
+	if (ret) {
+		dev_err(drv->dev, "failed to add sdw stream: %d\n", ret);
+		return ret;
+	}
+
+	return sdca_asoc_hw_params(drv->dev, drv->regmap, drv->function,
+				   substream, params, dai);
+}
+
+static int class_function_sdw_remove_peripheral(struct snd_pcm_substream *substream,
+						struct snd_soc_dai *dai)
+{
+	struct class_function_drv *drv = snd_soc_component_get_drvdata(dai->component);
+	struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
+	struct sdw_slave *sdw = dev_to_sdw_dev(drv->dev->parent);
+
+	if (!sdw_stream)
+		return -EINVAL;
+
+	return sdw_stream_remove_slave(sdw, sdw_stream);
+}
+
+static int class_function_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream,
+					 int direction)
+{
+	snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops class_function_sdw_ops = {
+	.startup	= class_function_startup,
+	.shutdown	= sdca_asoc_free_constraints,
+	.set_stream	= class_function_sdw_set_stream,
+	.hw_params	= class_function_sdw_add_peripheral,
+	.hw_free	= class_function_sdw_remove_peripheral,
+};
+
+static int class_function_component_probe(struct snd_soc_component *component)
+{
+	struct class_function_drv *drv = snd_soc_component_get_drvdata(component);
+	struct sdca_class_drv *core = drv->core;
+
+	return sdca_irq_populate(drv->function, component, core->irq_info);
+}
+
+static const struct snd_soc_component_driver class_function_component_drv = {
+	.probe			= class_function_component_probe,
+	.endianness		= 1,
+};
+
+static int class_function_boot(struct class_function_drv *drv)
+{
+	unsigned int reg = SDW_SDCA_CTL(drv->function->desc->adr,
+					SDCA_ENTITY_TYPE_ENTITY_0,
+					SDCA_CTL_ENTITY_0_FUNCTION_STATUS, 0);
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(drv->regmap, reg, &val);
+	if (ret < 0) {
+		dev_err(drv->dev, "failed to read function status: %d\n", ret);
+		return ret;
+	}
+
+	if (!(val & SDCA_CTL_ENTITY_0_FUNCTION_HAS_BEEN_RESET)) {
+		dev_dbg(drv->dev, "reset function device\n");
+
+		ret = sdca_reset_function(drv->dev, drv->function, drv->regmap);
+		if (ret)
+			return ret;
+	}
+
+	if (val & SDCA_CTL_ENTITY_0_FUNCTION_NEEDS_INITIALIZATION) {
+		dev_dbg(drv->dev, "write initialisation\n");
+
+		ret = sdca_regmap_write_init(drv->dev, drv->core->dev_regmap,
+					     drv->function);
+		if (ret)
+			return ret;
+
+		ret = regmap_write(drv->regmap, reg,
+				   SDCA_CTL_ENTITY_0_FUNCTION_NEEDS_INITIALIZATION);
+		if (ret < 0) {
+			dev_err(drv->dev,
+				"failed to clear function init status: %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	/* Start FDL process */
+	ret = sdca_irq_populate_early(drv->dev, drv->regmap, drv->function,
+				      drv->core->irq_info);
+	if (ret)
+		return ret;
+
+	ret = sdca_fdl_sync(drv->dev, drv->function, drv->core->irq_info);
+	if (ret)
+		return ret;
+
+	ret = sdca_regmap_write_defaults(drv->dev, drv->regmap, drv->function);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(drv->regmap, reg, 0xFF);
+	if (ret < 0) {
+		dev_err(drv->dev, "failed to clear function status: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int class_function_probe(struct auxiliary_device *auxdev,
+				const struct auxiliary_device_id *aux_dev_id)
+{
+	struct device *dev = &auxdev->dev;
+	struct sdca_class_drv *core = dev_get_drvdata(dev->parent);
+	struct sdca_device_data *data = &core->sdw->sdca_data;
+	struct sdca_function_desc *desc;
+	struct snd_soc_component_driver *cmp_drv;
+	struct snd_soc_dai_driver *dais;
+	struct class_function_drv *drv;
+	struct regmap_sdw_mbq_cfg *mbq_config;
+	struct regmap_config *config;
+	struct reg_default *defaults;
+	int ndefaults;
+	int num_dais;
+	int ret;
+	int i;
+
+	drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL);
+	if (!drv)
+		return -ENOMEM;
+
+	cmp_drv = devm_kmemdup(dev, &class_function_component_drv, sizeof(*cmp_drv),
+			       GFP_KERNEL);
+	if (!cmp_drv)
+		return -ENOMEM;
+
+	config = devm_kmemdup(dev, &class_function_regmap_config, sizeof(*config),
+			      GFP_KERNEL);
+	if (!config)
+		return -ENOMEM;
+
+	mbq_config = devm_kmemdup(dev, &class_function_mbq_config, sizeof(*mbq_config),
+				  GFP_KERNEL);
+	if (!mbq_config)
+		return -ENOMEM;
+
+	drv->dev = dev;
+	drv->core = core;
+
+	for (i = 0; i < data->num_functions; i++) {
+		desc = &data->function[i];
+
+		if (desc->type == aux_dev_id->driver_data)
+			break;
+	}
+	if (i == core->sdw->sdca_data.num_functions) {
+		dev_err(dev, "failed to locate function\n");
+		return -EINVAL;
+	}
+
+	drv->function = &core->functions[i];
+
+	ret = sdca_parse_function(dev, core->sdw, desc, drv->function);
+	if (ret)
+		return ret;
+
+	ndefaults = sdca_regmap_count_constants(dev, drv->function);
+	if (ndefaults < 0)
+		return ndefaults;
+
+	defaults = devm_kcalloc(dev, ndefaults, sizeof(*defaults), GFP_KERNEL);
+	if (!defaults)
+		return -ENOMEM;
+
+	ret = sdca_regmap_populate_constants(dev, drv->function, defaults);
+	if (ret < 0)
+		return ret;
+
+	regcache_sort_defaults(defaults, ndefaults);
+
+	auxiliary_set_drvdata(auxdev, drv);
+
+	config->reg_defaults = defaults;
+	config->num_reg_defaults = ndefaults;
+	config->lock_arg = &core->regmap_lock;
+
+	if (drv->function->busy_max_delay) {
+		mbq_config->timeout_us = drv->function->busy_max_delay;
+		mbq_config->retry_us = umax(drv->function->busy_max_delay / 10,
+					    mbq_config->retry_us);
+	}
+
+	drv->regmap = devm_regmap_init_sdw_mbq_cfg(dev, core->sdw, config, mbq_config);
+	if (IS_ERR(drv->regmap))
+		return dev_err_probe(dev, PTR_ERR(drv->regmap),
+				     "failed to create regmap");
+
+	ret = sdca_asoc_populate_component(dev, drv->function, cmp_drv,
+					   &dais, &num_dais,
+					   &class_function_sdw_ops);
+	if (ret)
+		return ret;
+
+	pm_runtime_set_autosuspend_delay(dev, 200);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_get_noresume(dev);
+
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return ret;
+
+	ret = class_function_boot(drv);
+	if (ret)
+		return ret;
+
+	ret = devm_snd_soc_register_component(dev, cmp_drv, dais, num_dais);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to register component\n");
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return 0;
+}
+
+static int class_function_runtime_suspend(struct device *dev)
+{
+	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
+	struct class_function_drv *drv = auxiliary_get_drvdata(auxdev);
+
+	/*
+	 * Whilst the driver doesn't power the chip down here, going into
+	 * runtime suspend means the driver can't be sure the bus won't
+	 * power down which would prevent communication with the device.
+	 */
+	regcache_cache_only(drv->regmap, true);
+
+	return 0;
+}
+
+static int class_function_runtime_resume(struct device *dev)
+{
+	struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
+	struct class_function_drv *drv = auxiliary_get_drvdata(auxdev);
+	int ret;
+
+	regcache_mark_dirty(drv->regmap);
+	regcache_cache_only(drv->regmap, false);
+
+	ret = regcache_sync(drv->regmap);
+	if (ret) {
+		dev_err(drv->dev, "failed to restore register cache: %d\n", ret);
+		goto err;
+	}
+
+	return 0;
+
+err:
+	regcache_cache_only(drv->regmap, true);
+
+	return ret;
+}
+
+static const struct dev_pm_ops class_function_pm_ops = {
+	RUNTIME_PM_OPS(class_function_runtime_suspend,
+		       class_function_runtime_resume, NULL)
+};
+
+static const struct auxiliary_device_id class_function_id_table[] = {
+	{
+		.name = "snd_soc_sdca." SDCA_FUNCTION_TYPE_SMART_AMP_NAME,
+		.driver_data = SDCA_FUNCTION_TYPE_SMART_AMP,
+	},
+	{
+		.name = "snd_soc_sdca." SDCA_FUNCTION_TYPE_SMART_MIC_NAME,
+		.driver_data = SDCA_FUNCTION_TYPE_SMART_MIC,
+	},
+	{
+		.name = "snd_soc_sdca." SDCA_FUNCTION_TYPE_UAJ_NAME,
+		.driver_data = SDCA_FUNCTION_TYPE_UAJ,
+	},
+	{
+		.name = "snd_soc_sdca." SDCA_FUNCTION_TYPE_HID_NAME,
+		.driver_data = SDCA_FUNCTION_TYPE_HID,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(auxiliary, class_function_id_table);
+
+static struct auxiliary_driver class_function_drv = {
+	.driver = {
+		.name		= "sdca_function",
+		.pm		= pm_ptr(&class_function_pm_ops),
+	},
+
+	.probe		= class_function_probe,
+	.id_table	= class_function_id_table
+};
+module_auxiliary_driver(class_function_drv);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SDCA Class Function Driver");
+MODULE_IMPORT_NS("SND_SOC_SDCA");