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-rw-r--r--sound/soc/soc-component.c1299
1 files changed, 1299 insertions, 0 deletions
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
new file mode 100644
index 0000000000..566033f7dd
--- /dev/null
+++ b/sound/soc/soc-component.c
@@ -0,0 +1,1299 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// soc-component.c
+//
+// Copyright 2009-2011 Wolfson Microelectronics PLC.
+// Copyright (C) 2019 Renesas Electronics Corp.
+//
+// Mark Brown <broonie@opensource.wolfsonmicro.com>
+// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+//
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <sound/soc.h>
+#include <linux/bitops.h>
+
+#define soc_component_ret(dai, ret) _soc_component_ret(dai, __func__, ret, -1)
+#define soc_component_ret_reg_rw(dai, ret, reg) _soc_component_ret(dai, __func__, ret, reg)
+static inline int _soc_component_ret(struct snd_soc_component *component,
+ const char *func, int ret, int reg)
+{
+ /* Positive/Zero values are not errors */
+ if (ret >= 0)
+ return ret;
+
+ /* Negative values might be errors */
+ switch (ret) {
+ case -EPROBE_DEFER:
+ case -ENOTSUPP:
+ break;
+ default:
+ if (reg == -1)
+ dev_err(component->dev,
+ "ASoC: error at %s on %s: %d\n",
+ func, component->name, ret);
+ else
+ dev_err(component->dev,
+ "ASoC: error at %s on %s for register: [0x%08x] %d\n",
+ func, component->name, reg, ret);
+ }
+
+ return ret;
+}
+
+static inline int soc_component_field_shift(struct snd_soc_component *component,
+ unsigned int mask)
+{
+ if (!mask) {
+ dev_err(component->dev, "ASoC: error field mask is zero for %s\n",
+ component->name);
+ return 0;
+ }
+
+ return (ffs(mask) - 1);
+}
+
+/*
+ * We might want to check substream by using list.
+ * In such case, we can update these macros.
+ */
+#define soc_component_mark_push(component, substream, tgt) ((component)->mark_##tgt = substream)
+#define soc_component_mark_pop(component, substream, tgt) ((component)->mark_##tgt = NULL)
+#define soc_component_mark_match(component, substream, tgt) ((component)->mark_##tgt == substream)
+
+void snd_soc_component_set_aux(struct snd_soc_component *component,
+ struct snd_soc_aux_dev *aux)
+{
+ component->init = (aux) ? aux->init : NULL;
+}
+
+int snd_soc_component_init(struct snd_soc_component *component)
+{
+ int ret = 0;
+
+ if (component->init)
+ ret = component->init(component);
+
+ return soc_component_ret(component, ret);
+}
+
+/**
+ * snd_soc_component_set_sysclk - configure COMPONENT system or master clock.
+ * @component: COMPONENT
+ * @clk_id: DAI specific clock ID
+ * @source: Source for the clock
+ * @freq: new clock frequency in Hz
+ * @dir: new clock direction - input/output.
+ *
+ * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
+ */
+int snd_soc_component_set_sysclk(struct snd_soc_component *component,
+ int clk_id, int source, unsigned int freq,
+ int dir)
+{
+ int ret = -ENOTSUPP;
+
+ if (component->driver->set_sysclk)
+ ret = component->driver->set_sysclk(component, clk_id, source,
+ freq, dir);
+
+ return soc_component_ret(component, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_set_sysclk);
+
+/*
+ * snd_soc_component_set_pll - configure component PLL.
+ * @component: COMPONENT
+ * @pll_id: DAI specific PLL ID
+ * @source: DAI specific source for the PLL
+ * @freq_in: PLL input clock frequency in Hz
+ * @freq_out: requested PLL output clock frequency in Hz
+ *
+ * Configures and enables PLL to generate output clock based on input clock.
+ */
+int snd_soc_component_set_pll(struct snd_soc_component *component, int pll_id,
+ int source, unsigned int freq_in,
+ unsigned int freq_out)
+{
+ int ret = -EINVAL;
+
+ if (component->driver->set_pll)
+ ret = component->driver->set_pll(component, pll_id, source,
+ freq_in, freq_out);
+
+ return soc_component_ret(component, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_set_pll);
+
+void snd_soc_component_seq_notifier(struct snd_soc_component *component,
+ enum snd_soc_dapm_type type, int subseq)
+{
+ if (component->driver->seq_notifier)
+ component->driver->seq_notifier(component, type, subseq);
+}
+
+int snd_soc_component_stream_event(struct snd_soc_component *component,
+ int event)
+{
+ int ret = 0;
+
+ if (component->driver->stream_event)
+ ret = component->driver->stream_event(component, event);
+
+ return soc_component_ret(component, ret);
+}
+
+int snd_soc_component_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ int ret = 0;
+
+ if (component->driver->set_bias_level)
+ ret = component->driver->set_bias_level(component, level);
+
+ return soc_component_ret(component, ret);
+}
+
+int snd_soc_component_enable_pin(struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_enable_pin(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_enable_pin);
+
+int snd_soc_component_enable_pin_unlocked(struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_enable_pin_unlocked(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_enable_pin_unlocked);
+
+int snd_soc_component_disable_pin(struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_disable_pin(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_disable_pin);
+
+int snd_soc_component_disable_pin_unlocked(struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_disable_pin_unlocked(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_disable_pin_unlocked);
+
+int snd_soc_component_nc_pin(struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_nc_pin(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_nc_pin);
+
+int snd_soc_component_nc_pin_unlocked(struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_nc_pin_unlocked(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_nc_pin_unlocked);
+
+int snd_soc_component_get_pin_status(struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_get_pin_status(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_get_pin_status);
+
+int snd_soc_component_force_enable_pin(struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_force_enable_pin(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin);
+
+int snd_soc_component_force_enable_pin_unlocked(
+ struct snd_soc_component *component,
+ const char *pin)
+{
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+ return snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin_unlocked);
+
+int snd_soc_component_notify_control(struct snd_soc_component *component,
+ const char * const ctl)
+{
+ char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
+ struct snd_kcontrol *kctl;
+
+ /* When updating, change also snd_soc_dapm_widget_name_cmp() */
+ if (component->name_prefix)
+ snprintf(name, ARRAY_SIZE(name), "%s %s", component->name_prefix, ctl);
+ else
+ snprintf(name, ARRAY_SIZE(name), "%s", ctl);
+
+ kctl = snd_soc_card_get_kcontrol(component->card, name);
+ if (!kctl)
+ return soc_component_ret(component, -EINVAL);
+
+ snd_ctl_notify(component->card->snd_card,
+ SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_notify_control);
+
+/**
+ * snd_soc_component_set_jack - configure component jack.
+ * @component: COMPONENTs
+ * @jack: structure to use for the jack
+ * @data: can be used if codec driver need extra data for configuring jack
+ *
+ * Configures and enables jack detection function.
+ */
+int snd_soc_component_set_jack(struct snd_soc_component *component,
+ struct snd_soc_jack *jack, void *data)
+{
+ int ret = -ENOTSUPP;
+
+ if (component->driver->set_jack)
+ ret = component->driver->set_jack(component, jack, data);
+
+ return soc_component_ret(component, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_set_jack);
+
+/**
+ * snd_soc_component_get_jack_type
+ * @component: COMPONENTs
+ *
+ * Returns the jack type of the component
+ * This can either be the supported type or one read from
+ * devicetree with the property: jack-type.
+ */
+int snd_soc_component_get_jack_type(
+ struct snd_soc_component *component)
+{
+ int ret = -ENOTSUPP;
+
+ if (component->driver->get_jack_type)
+ ret = component->driver->get_jack_type(component);
+
+ return soc_component_ret(component, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_get_jack_type);
+
+int snd_soc_component_module_get(struct snd_soc_component *component,
+ void *mark, int upon_open)
+{
+ int ret = 0;
+
+ if (component->driver->module_get_upon_open == !!upon_open &&
+ !try_module_get(component->dev->driver->owner))
+ ret = -ENODEV;
+
+ /* mark module if succeeded */
+ if (ret == 0)
+ soc_component_mark_push(component, mark, module);
+
+ return soc_component_ret(component, ret);
+}
+
+void snd_soc_component_module_put(struct snd_soc_component *component,
+ void *mark, int upon_open, int rollback)
+{
+ if (rollback && !soc_component_mark_match(component, mark, module))
+ return;
+
+ if (component->driver->module_get_upon_open == !!upon_open)
+ module_put(component->dev->driver->owner);
+
+ /* remove the mark from module */
+ soc_component_mark_pop(component, mark, module);
+}
+
+int snd_soc_component_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ int ret = 0;
+
+ if (component->driver->open)
+ ret = component->driver->open(component, substream);
+
+ /* mark substream if succeeded */
+ if (ret == 0)
+ soc_component_mark_push(component, substream, open);
+
+ return soc_component_ret(component, ret);
+}
+
+int snd_soc_component_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ int rollback)
+{
+ int ret = 0;
+
+ if (rollback && !soc_component_mark_match(component, substream, open))
+ return 0;
+
+ if (component->driver->close)
+ ret = component->driver->close(component, substream);
+
+ /* remove marked substream */
+ soc_component_mark_pop(component, substream, open);
+
+ return soc_component_ret(component, ret);
+}
+
+void snd_soc_component_suspend(struct snd_soc_component *component)
+{
+ if (component->driver->suspend)
+ component->driver->suspend(component);
+ component->suspended = 1;
+}
+
+void snd_soc_component_resume(struct snd_soc_component *component)
+{
+ if (component->driver->resume)
+ component->driver->resume(component);
+ component->suspended = 0;
+}
+
+int snd_soc_component_is_suspended(struct snd_soc_component *component)
+{
+ return component->suspended;
+}
+
+int snd_soc_component_probe(struct snd_soc_component *component)
+{
+ int ret = 0;
+
+ if (component->driver->probe)
+ ret = component->driver->probe(component);
+
+ return soc_component_ret(component, ret);
+}
+
+void snd_soc_component_remove(struct snd_soc_component *component)
+{
+ if (component->driver->remove)
+ component->driver->remove(component);
+}
+
+int snd_soc_component_of_xlate_dai_id(struct snd_soc_component *component,
+ struct device_node *ep)
+{
+ int ret = -ENOTSUPP;
+
+ if (component->driver->of_xlate_dai_id)
+ ret = component->driver->of_xlate_dai_id(component, ep);
+
+ return soc_component_ret(component, ret);
+}
+
+int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
+ const struct of_phandle_args *args,
+ const char **dai_name)
+{
+ if (component->driver->of_xlate_dai_name)
+ return component->driver->of_xlate_dai_name(component,
+ args, dai_name);
+ /*
+ * Don't use soc_component_ret here because we may not want to report
+ * the error just yet. If a device has more than one component, the
+ * first may not match and we don't want spam the log with this.
+ */
+ return -ENOTSUPP;
+}
+
+void snd_soc_component_setup_regmap(struct snd_soc_component *component)
+{
+ int val_bytes = regmap_get_val_bytes(component->regmap);
+
+ /* Errors are legitimate for non-integer byte multiples */
+ if (val_bytes > 0)
+ component->val_bytes = val_bytes;
+}
+
+#ifdef CONFIG_REGMAP
+
+/**
+ * snd_soc_component_init_regmap() - Initialize regmap instance for the
+ * component
+ * @component: The component for which to initialize the regmap instance
+ * @regmap: The regmap instance that should be used by the component
+ *
+ * This function allows deferred assignment of the regmap instance that is
+ * associated with the component. Only use this if the regmap instance is not
+ * yet ready when the component is registered. The function must also be called
+ * before the first IO attempt of the component.
+ */
+void snd_soc_component_init_regmap(struct snd_soc_component *component,
+ struct regmap *regmap)
+{
+ component->regmap = regmap;
+ snd_soc_component_setup_regmap(component);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_init_regmap);
+
+/**
+ * snd_soc_component_exit_regmap() - De-initialize regmap instance for the
+ * component
+ * @component: The component for which to de-initialize the regmap instance
+ *
+ * Calls regmap_exit() on the regmap instance associated to the component and
+ * removes the regmap instance from the component.
+ *
+ * This function should only be used if snd_soc_component_init_regmap() was used
+ * to initialize the regmap instance.
+ */
+void snd_soc_component_exit_regmap(struct snd_soc_component *component)
+{
+ regmap_exit(component->regmap);
+ component->regmap = NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
+
+#endif
+
+int snd_soc_component_compr_open(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream)
+{
+ int ret = 0;
+
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->open)
+ ret = component->driver->compress_ops->open(component, cstream);
+
+ /* mark substream if succeeded */
+ if (ret == 0)
+ soc_component_mark_push(component, cstream, compr_open);
+
+ return soc_component_ret(component, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_open);
+
+void snd_soc_component_compr_free(struct snd_soc_component *component,
+ struct snd_compr_stream *cstream,
+ int rollback)
+{
+ if (rollback && !soc_component_mark_match(component, cstream, compr_open))
+ return;
+
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->free)
+ component->driver->compress_ops->free(component, cstream);
+
+ /* remove marked substream */
+ soc_component_mark_pop(component, cstream, compr_open);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_free);
+
+int snd_soc_component_compr_trigger(struct snd_compr_stream *cstream, int cmd)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->trigger) {
+ ret = component->driver->compress_ops->trigger(
+ component, cstream, cmd);
+ if (ret < 0)
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_trigger);
+
+int snd_soc_component_compr_set_params(struct snd_compr_stream *cstream,
+ struct snd_compr_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->set_params) {
+ ret = component->driver->compress_ops->set_params(
+ component, cstream, params);
+ if (ret < 0)
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_set_params);
+
+int snd_soc_component_compr_get_params(struct snd_compr_stream *cstream,
+ struct snd_codec *params)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->get_params) {
+ ret = component->driver->compress_ops->get_params(
+ component, cstream, params);
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_get_params);
+
+int snd_soc_component_compr_get_caps(struct snd_compr_stream *cstream,
+ struct snd_compr_caps *caps)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret = 0;
+
+ snd_soc_dpcm_mutex_lock(rtd);
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->get_caps) {
+ ret = component->driver->compress_ops->get_caps(
+ component, cstream, caps);
+ break;
+ }
+ }
+
+ snd_soc_dpcm_mutex_unlock(rtd);
+
+ return soc_component_ret(component, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_get_caps);
+
+int snd_soc_component_compr_get_codec_caps(struct snd_compr_stream *cstream,
+ struct snd_compr_codec_caps *codec)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret = 0;
+
+ snd_soc_dpcm_mutex_lock(rtd);
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->get_codec_caps) {
+ ret = component->driver->compress_ops->get_codec_caps(
+ component, cstream, codec);
+ break;
+ }
+ }
+
+ snd_soc_dpcm_mutex_unlock(rtd);
+
+ return soc_component_ret(component, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_get_codec_caps);
+
+int snd_soc_component_compr_ack(struct snd_compr_stream *cstream, size_t bytes)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->ack) {
+ ret = component->driver->compress_ops->ack(
+ component, cstream, bytes);
+ if (ret < 0)
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_ack);
+
+int snd_soc_component_compr_pointer(struct snd_compr_stream *cstream,
+ struct snd_compr_tstamp *tstamp)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->pointer) {
+ ret = component->driver->compress_ops->pointer(
+ component, cstream, tstamp);
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_pointer);
+
+int snd_soc_component_compr_copy(struct snd_compr_stream *cstream,
+ char __user *buf, size_t count)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret = 0;
+
+ snd_soc_dpcm_mutex_lock(rtd);
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->copy) {
+ ret = component->driver->compress_ops->copy(
+ component, cstream, buf, count);
+ break;
+ }
+ }
+
+ snd_soc_dpcm_mutex_unlock(rtd);
+
+ return soc_component_ret(component, ret);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_copy);
+
+int snd_soc_component_compr_set_metadata(struct snd_compr_stream *cstream,
+ struct snd_compr_metadata *metadata)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->set_metadata) {
+ ret = component->driver->compress_ops->set_metadata(
+ component, cstream, metadata);
+ if (ret < 0)
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_set_metadata);
+
+int snd_soc_component_compr_get_metadata(struct snd_compr_stream *cstream,
+ struct snd_compr_metadata *metadata)
+{
+ struct snd_soc_pcm_runtime *rtd = cstream->private_data;
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->compress_ops &&
+ component->driver->compress_ops->get_metadata) {
+ ret = component->driver->compress_ops->get_metadata(
+ component, cstream, metadata);
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_compr_get_metadata);
+
+static unsigned int soc_component_read_no_lock(
+ struct snd_soc_component *component,
+ unsigned int reg)
+{
+ int ret;
+ unsigned int val = 0;
+
+ if (component->regmap)
+ ret = regmap_read(component->regmap, reg, &val);
+ else if (component->driver->read) {
+ ret = 0;
+ val = component->driver->read(component, reg);
+ }
+ else
+ ret = -EIO;
+
+ if (ret < 0)
+ return soc_component_ret_reg_rw(component, ret, reg);
+
+ return val;
+}
+
+/**
+ * snd_soc_component_read() - Read register value
+ * @component: Component to read from
+ * @reg: Register to read
+ *
+ * Return: read value
+ */
+unsigned int snd_soc_component_read(struct snd_soc_component *component,
+ unsigned int reg)
+{
+ unsigned int val;
+
+ mutex_lock(&component->io_mutex);
+ val = soc_component_read_no_lock(component, reg);
+ mutex_unlock(&component->io_mutex);
+
+ return val;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_read);
+
+static int soc_component_write_no_lock(
+ struct snd_soc_component *component,
+ unsigned int reg, unsigned int val)
+{
+ int ret = -EIO;
+
+ if (component->regmap)
+ ret = regmap_write(component->regmap, reg, val);
+ else if (component->driver->write)
+ ret = component->driver->write(component, reg, val);
+
+ return soc_component_ret_reg_rw(component, ret, reg);
+}
+
+/**
+ * snd_soc_component_write() - Write register value
+ * @component: Component to write to
+ * @reg: Register to write
+ * @val: Value to write to the register
+ *
+ * Return: 0 on success, a negative error code otherwise.
+ */
+int snd_soc_component_write(struct snd_soc_component *component,
+ unsigned int reg, unsigned int val)
+{
+ int ret;
+
+ mutex_lock(&component->io_mutex);
+ ret = soc_component_write_no_lock(component, reg, val);
+ mutex_unlock(&component->io_mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_write);
+
+static int snd_soc_component_update_bits_legacy(
+ struct snd_soc_component *component, unsigned int reg,
+ unsigned int mask, unsigned int val, bool *change)
+{
+ unsigned int old, new;
+ int ret = 0;
+
+ mutex_lock(&component->io_mutex);
+
+ old = soc_component_read_no_lock(component, reg);
+
+ new = (old & ~mask) | (val & mask);
+ *change = old != new;
+ if (*change)
+ ret = soc_component_write_no_lock(component, reg, new);
+
+ mutex_unlock(&component->io_mutex);
+
+ return soc_component_ret_reg_rw(component, ret, reg);
+}
+
+/**
+ * snd_soc_component_update_bits() - Perform read/modify/write cycle
+ * @component: Component to update
+ * @reg: Register to update
+ * @mask: Mask that specifies which bits to update
+ * @val: New value for the bits specified by mask
+ *
+ * Return: 1 if the operation was successful and the value of the register
+ * changed, 0 if the operation was successful, but the value did not change.
+ * Returns a negative error code otherwise.
+ */
+int snd_soc_component_update_bits(struct snd_soc_component *component,
+ unsigned int reg, unsigned int mask, unsigned int val)
+{
+ bool change;
+ int ret;
+
+ if (component->regmap)
+ ret = regmap_update_bits_check(component->regmap, reg, mask,
+ val, &change);
+ else
+ ret = snd_soc_component_update_bits_legacy(component, reg,
+ mask, val, &change);
+
+ if (ret < 0)
+ return soc_component_ret_reg_rw(component, ret, reg);
+ return change;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_update_bits);
+
+/**
+ * snd_soc_component_update_bits_async() - Perform asynchronous
+ * read/modify/write cycle
+ * @component: Component to update
+ * @reg: Register to update
+ * @mask: Mask that specifies which bits to update
+ * @val: New value for the bits specified by mask
+ *
+ * This function is similar to snd_soc_component_update_bits(), but the update
+ * operation is scheduled asynchronously. This means it may not be completed
+ * when the function returns. To make sure that all scheduled updates have been
+ * completed snd_soc_component_async_complete() must be called.
+ *
+ * Return: 1 if the operation was successful and the value of the register
+ * changed, 0 if the operation was successful, but the value did not change.
+ * Returns a negative error code otherwise.
+ */
+int snd_soc_component_update_bits_async(struct snd_soc_component *component,
+ unsigned int reg, unsigned int mask, unsigned int val)
+{
+ bool change;
+ int ret;
+
+ if (component->regmap)
+ ret = regmap_update_bits_check_async(component->regmap, reg,
+ mask, val, &change);
+ else
+ ret = snd_soc_component_update_bits_legacy(component, reg,
+ mask, val, &change);
+
+ if (ret < 0)
+ return soc_component_ret_reg_rw(component, ret, reg);
+ return change;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_update_bits_async);
+
+/**
+ * snd_soc_component_read_field() - Read register field value
+ * @component: Component to read from
+ * @reg: Register to read
+ * @mask: mask of the register field
+ *
+ * Return: read value of register field.
+ */
+unsigned int snd_soc_component_read_field(struct snd_soc_component *component,
+ unsigned int reg, unsigned int mask)
+{
+ unsigned int val;
+
+ val = snd_soc_component_read(component, reg);
+
+ val = (val & mask) >> soc_component_field_shift(component, mask);
+
+ return val;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_read_field);
+
+/**
+ * snd_soc_component_write_field() - write to register field
+ * @component: Component to write to
+ * @reg: Register to write
+ * @mask: mask of the register field to update
+ * @val: value of the field to write
+ *
+ * Return: 1 for change, otherwise 0.
+ */
+int snd_soc_component_write_field(struct snd_soc_component *component,
+ unsigned int reg, unsigned int mask,
+ unsigned int val)
+{
+
+ val = (val << soc_component_field_shift(component, mask)) & mask;
+
+ return snd_soc_component_update_bits(component, reg, mask, val);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_write_field);
+
+/**
+ * snd_soc_component_async_complete() - Ensure asynchronous I/O has completed
+ * @component: Component for which to wait
+ *
+ * This function blocks until all asynchronous I/O which has previously been
+ * scheduled using snd_soc_component_update_bits_async() has completed.
+ */
+void snd_soc_component_async_complete(struct snd_soc_component *component)
+{
+ if (component->regmap)
+ regmap_async_complete(component->regmap);
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_async_complete);
+
+/**
+ * snd_soc_component_test_bits - Test register for change
+ * @component: component
+ * @reg: Register to test
+ * @mask: Mask that specifies which bits to test
+ * @value: Value to test against
+ *
+ * Tests a register with a new value and checks if the new value is
+ * different from the old value.
+ *
+ * Return: 1 for change, otherwise 0.
+ */
+int snd_soc_component_test_bits(struct snd_soc_component *component,
+ unsigned int reg, unsigned int mask, unsigned int value)
+{
+ unsigned int old, new;
+
+ old = snd_soc_component_read(component, reg);
+ new = (old & ~mask) | value;
+ return old != new;
+}
+EXPORT_SYMBOL_GPL(snd_soc_component_test_bits);
+
+int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i;
+
+ /* FIXME: use 1st pointer */
+ for_each_rtd_components(rtd, i, component)
+ if (component->driver->pointer)
+ return component->driver->pointer(component, substream);
+
+ return 0;
+}
+
+static bool snd_soc_component_is_codec_on_rtd(struct snd_soc_pcm_runtime *rtd,
+ struct snd_soc_component *component)
+{
+ struct snd_soc_dai *dai;
+ int i;
+
+ for_each_rtd_codec_dais(rtd, i, dai) {
+ if (dai->component == component)
+ return true;
+ }
+
+ return false;
+}
+
+void snd_soc_pcm_component_delay(struct snd_pcm_substream *substream,
+ snd_pcm_sframes_t *cpu_delay,
+ snd_pcm_sframes_t *codec_delay)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ snd_pcm_sframes_t delay;
+ int i;
+
+ /*
+ * We're looking for the delay through the full audio path so it needs to
+ * be the maximum of the Components doing transmit and the maximum of the
+ * Components doing receive (ie, all CPUs and all CODECs) rather than
+ * just the maximum of all Components.
+ */
+ for_each_rtd_components(rtd, i, component) {
+ if (!component->driver->delay)
+ continue;
+
+ delay = component->driver->delay(component, substream);
+
+ if (snd_soc_component_is_codec_on_rtd(rtd, component))
+ *codec_delay = max(*codec_delay, delay);
+ else
+ *cpu_delay = max(*cpu_delay, delay);
+ }
+}
+
+int snd_soc_pcm_component_ioctl(struct snd_pcm_substream *substream,
+ unsigned int cmd, void *arg)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i;
+
+ /* FIXME: use 1st ioctl */
+ for_each_rtd_components(rtd, i, component)
+ if (component->driver->ioctl)
+ return soc_component_ret(
+ component,
+ component->driver->ioctl(component,
+ substream, cmd, arg));
+
+ return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
+
+int snd_soc_pcm_component_sync_stop(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->sync_stop) {
+ ret = component->driver->sync_stop(component,
+ substream);
+ if (ret < 0)
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+
+int snd_soc_pcm_component_copy(struct snd_pcm_substream *substream,
+ int channel, unsigned long pos,
+ struct iov_iter *iter, unsigned long bytes)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i;
+
+ /* FIXME. it returns 1st copy now */
+ for_each_rtd_components(rtd, i, component)
+ if (component->driver->copy)
+ return soc_component_ret(component,
+ component->driver->copy(component, substream,
+ channel, pos, iter, bytes));
+
+ return -EINVAL;
+}
+
+struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream,
+ unsigned long offset)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ struct page *page;
+ int i;
+
+ /* FIXME. it returns 1st page now */
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->page) {
+ page = component->driver->page(component,
+ substream, offset);
+ if (page)
+ return page;
+ }
+ }
+
+ return NULL;
+}
+
+int snd_soc_pcm_component_mmap(struct snd_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i;
+
+ /* FIXME. it returns 1st mmap now */
+ for_each_rtd_components(rtd, i, component)
+ if (component->driver->mmap)
+ return soc_component_ret(
+ component,
+ component->driver->mmap(component,
+ substream, vma));
+
+ return -EINVAL;
+}
+
+int snd_soc_pcm_component_new(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_component *component;
+ int ret;
+ int i;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->pcm_construct) {
+ ret = component->driver->pcm_construct(component, rtd);
+ if (ret < 0)
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+
+void snd_soc_pcm_component_free(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_component *component;
+ int i;
+
+ if (!rtd->pcm)
+ return;
+
+ for_each_rtd_components(rtd, i, component)
+ if (component->driver->pcm_destruct)
+ component->driver->pcm_destruct(component, rtd->pcm);
+}
+
+int snd_soc_pcm_component_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->prepare) {
+ ret = component->driver->prepare(component, substream);
+ if (ret < 0)
+ return soc_component_ret(component, ret);
+ }
+ }
+
+ return 0;
+}
+
+int snd_soc_pcm_component_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (component->driver->hw_params) {
+ ret = component->driver->hw_params(component,
+ substream, params);
+ if (ret < 0)
+ return soc_component_ret(component, ret);
+ }
+ /* mark substream if succeeded */
+ soc_component_mark_push(component, substream, hw_params);
+ }
+
+ return 0;
+}
+
+void snd_soc_pcm_component_hw_free(struct snd_pcm_substream *substream,
+ int rollback)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i, ret;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (rollback && !soc_component_mark_match(component, substream, hw_params))
+ continue;
+
+ if (component->driver->hw_free) {
+ ret = component->driver->hw_free(component, substream);
+ if (ret < 0)
+ soc_component_ret(component, ret);
+ }
+
+ /* remove marked substream */
+ soc_component_mark_pop(component, substream, hw_params);
+ }
+}
+
+static int soc_component_trigger(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ int cmd)
+{
+ int ret = 0;
+
+ if (component->driver->trigger)
+ ret = component->driver->trigger(component, substream, cmd);
+
+ return soc_component_ret(component, ret);
+}
+
+int snd_soc_pcm_component_trigger(struct snd_pcm_substream *substream,
+ int cmd, int rollback)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i, r, ret = 0;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ for_each_rtd_components(rtd, i, component) {
+ ret = soc_component_trigger(component, substream, cmd);
+ if (ret < 0)
+ break;
+ soc_component_mark_push(component, substream, trigger);
+ }
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ for_each_rtd_components(rtd, i, component) {
+ if (rollback && !soc_component_mark_match(component, substream, trigger))
+ continue;
+
+ r = soc_component_trigger(component, substream, cmd);
+ if (r < 0)
+ ret = r; /* use last ret */
+ soc_component_mark_pop(component, substream, trigger);
+ }
+ }
+
+ return ret;
+}
+
+int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd,
+ void *stream)
+{
+ struct snd_soc_component *component;
+ int i;
+
+ for_each_rtd_components(rtd, i, component) {
+ int ret = pm_runtime_get_sync(component->dev);
+ if (ret < 0 && ret != -EACCES) {
+ pm_runtime_put_noidle(component->dev);
+ return soc_component_ret(component, ret);
+ }
+ /* mark stream if succeeded */
+ soc_component_mark_push(component, stream, pm);
+ }
+
+ return 0;
+}
+
+void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,
+ void *stream, int rollback)
+{
+ struct snd_soc_component *component;
+ int i;
+
+ for_each_rtd_components(rtd, i, component) {
+ if (rollback && !soc_component_mark_match(component, stream, pm))
+ continue;
+
+ pm_runtime_mark_last_busy(component->dev);
+ pm_runtime_put_autosuspend(component->dev);
+
+ /* remove marked stream */
+ soc_component_mark_pop(component, stream, pm);
+ }
+}
+
+int snd_soc_pcm_component_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_component *component;
+ int i;
+
+ /* FIXME: use 1st pointer */
+ for_each_rtd_components(rtd, i, component)
+ if (component->driver->ack)
+ return component->driver->ack(component, substream);
+
+ return 0;
+}