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soc-component.c
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// SPDX-License-Identifier: GPL-2.0
//
// soc-component.c
//
// Copyright 2009-2011 Wolfson Microelectronics PLC.
// Copyright (C) 2019 Renesas Electronics Corp.
//
// Mark Brown <[email protected]>
// Kuninori Morimoto <[email protected]>
//
#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;
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;
/*