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linux/include/sound/soc-component.h
Kuninori Morimoto 939a5cfb2a
ASoC: soc-component: add mark for snd_soc_pcm_component_pm_runtime_get/put() 
soc_pcm_open() does rollback when failed (A),
but, it is almost same as soc_pcm_close().

	static int soc_pcm_open(xxx)
	{
		...
		if (ret < 0)
			goto xxx_err;
		...
		return 0;

 ^	config_err:
 |		...
 |	rtd_startup_err:
(A)		...
 |	component_err:
 |		...
 v		return ret;
	}

The difference is
soc_pcm_close() is for all dai/component/substream,
rollback        is for succeeded part only.

This kind of duplicated code can be a hotbed of bugs,
thus, we want to share soc_pcm_close() and rollback.

Now, soc_pcm_open/close() are handling
	1) snd_soc_dai_startup/shutdown()
	2) snd_soc_link_startup/shutdown()
	3) snd_soc_component_module_get/put()
	4) snd_soc_component_open/close()
=>	5) pm_runtime_put/get()

This patch is for 5) pm_runtime_put/get().

The idea of having bit-flag or counter is not enough for this purpose.
For example if one DAI is used for 2xPlaybacks for some reasons,
and if 1st Playback was succeeded but 2nd Playback was failed,
2nd Playback rollback doesn't need to call shutdown.
But it has succeeded bit-flag or counter via 1st Playback,
thus, 2nd Playback rollback will call unneeded shutdown.
And 1st Playback's necessary shutdown will not be called,
because bit-flag or counter was cleared by wrong 2nd Playback rollback.

To avoid such case, this patch marks substream pointer when get() was
succeeded. If rollback needed, it will check rollback flag and marked
substream pointer.

One note here is that it cares *current* get() only now.
but we might want to check *whole* marked substream in the future.
This patch is using macro named "push/pop", so that it can be easily
update.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87h7ribwnb.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-09-28 17:01:44 +01:00

474 lines
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/* SPDX-License-Identifier: GPL-2.0
*
* soc-component.h
*
* Copyright (C) 2019 Renesas Electronics Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*/
#ifndef __SOC_COMPONENT_H
#define __SOC_COMPONENT_H
#include <sound/soc.h>
/*
* Component probe and remove ordering levels for components with runtime
* dependencies.
*/
#define SND_SOC_COMP_ORDER_FIRST -2
#define SND_SOC_COMP_ORDER_EARLY -1
#define SND_SOC_COMP_ORDER_NORMAL 0
#define SND_SOC_COMP_ORDER_LATE 1
#define SND_SOC_COMP_ORDER_LAST 2
#define for_each_comp_order(order) \
for (order = SND_SOC_COMP_ORDER_FIRST; \
order <= SND_SOC_COMP_ORDER_LAST; \
order++)
/* component interface */
struct snd_compress_ops {
int (*open)(struct snd_soc_component *component,
struct snd_compr_stream *stream);
int (*free)(struct snd_soc_component *component,
struct snd_compr_stream *stream);
int (*set_params)(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_params *params);
int (*get_params)(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_codec *params);
int (*set_metadata)(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_metadata *metadata);
int (*get_metadata)(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_metadata *metadata);
int (*trigger)(struct snd_soc_component *component,
struct snd_compr_stream *stream, int cmd);
int (*pointer)(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_tstamp *tstamp);
int (*copy)(struct snd_soc_component *component,
struct snd_compr_stream *stream, char __user *buf,
size_t count);
int (*mmap)(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct vm_area_struct *vma);
int (*ack)(struct snd_soc_component *component,
struct snd_compr_stream *stream, size_t bytes);
int (*get_caps)(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_caps *caps);
int (*get_codec_caps)(struct snd_soc_component *component,
struct snd_compr_stream *stream,
struct snd_compr_codec_caps *codec);
};
struct snd_soc_component_driver {
const char *name;
/* Default control and setup, added after probe() is run */
const struct snd_kcontrol_new *controls;
unsigned int num_controls;
const struct snd_soc_dapm_widget *dapm_widgets;
unsigned int num_dapm_widgets;
const struct snd_soc_dapm_route *dapm_routes;
unsigned int num_dapm_routes;
int (*probe)(struct snd_soc_component *component);
void (*remove)(struct snd_soc_component *component);
int (*suspend)(struct snd_soc_component *component);
int (*resume)(struct snd_soc_component *component);
unsigned int (*read)(struct snd_soc_component *component,
unsigned int reg);
int (*write)(struct snd_soc_component *component,
unsigned int reg, unsigned int val);
/* pcm creation and destruction */
int (*pcm_construct)(struct snd_soc_component *component,
struct snd_soc_pcm_runtime *rtd);
void (*pcm_destruct)(struct snd_soc_component *component,
struct snd_pcm *pcm);
/* component wide operations */
int (*set_sysclk)(struct snd_soc_component *component,
int clk_id, int source, unsigned int freq, int dir);
int (*set_pll)(struct snd_soc_component *component, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out);
int (*set_jack)(struct snd_soc_component *component,
struct snd_soc_jack *jack, void *data);
/* DT */
int (*of_xlate_dai_name)(struct snd_soc_component *component,
struct of_phandle_args *args,
const char **dai_name);
int (*of_xlate_dai_id)(struct snd_soc_component *comment,
struct device_node *endpoint);
void (*seq_notifier)(struct snd_soc_component *component,
enum snd_soc_dapm_type type, int subseq);
int (*stream_event)(struct snd_soc_component *component, int event);
int (*set_bias_level)(struct snd_soc_component *component,
enum snd_soc_bias_level level);
int (*open)(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
int (*close)(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
int (*ioctl)(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
unsigned int cmd, void *arg);
int (*hw_params)(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params);
int (*hw_free)(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
int (*prepare)(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
int (*trigger)(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int cmd);
int (*sync_stop)(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
snd_pcm_uframes_t (*pointer)(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
int (*get_time_info)(struct snd_soc_component *component,
struct snd_pcm_substream *substream, struct timespec64 *system_ts,
struct timespec64 *audio_ts,
struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
struct snd_pcm_audio_tstamp_report *audio_tstamp_report);
int (*copy_user)(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int channel,
unsigned long pos, void __user *buf,
unsigned long bytes);
struct page *(*page)(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
unsigned long offset);
int (*mmap)(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct vm_area_struct *vma);
const struct snd_compress_ops *compress_ops;
/* probe ordering - for components with runtime dependencies */
int probe_order;
int remove_order;
/*
* signal if the module handling the component should not be removed
* if a pcm is open. Setting this would prevent the module
* refcount being incremented in probe() but allow it be incremented
* when a pcm is opened and decremented when it is closed.
*/
unsigned int module_get_upon_open:1;
/* bits */
unsigned int idle_bias_on:1;
unsigned int suspend_bias_off:1;
unsigned int use_pmdown_time:1; /* care pmdown_time at stop */
unsigned int endianness:1;
unsigned int non_legacy_dai_naming:1;
/* this component uses topology and ignore machine driver FEs */
const char *ignore_machine;
const char *topology_name_prefix;
int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params);
bool use_dai_pcm_id; /* use DAI link PCM ID as PCM device number */
int be_pcm_base; /* base device ID for all BE PCMs */
};
struct snd_soc_component {
const char *name;
int id;
const char *name_prefix;
struct device *dev;
struct snd_soc_card *card;
unsigned int active;
unsigned int suspended:1; /* is in suspend PM state */
struct list_head list;
struct list_head card_aux_list; /* for auxiliary bound components */
struct list_head card_list;
const struct snd_soc_component_driver *driver;
struct list_head dai_list;
int num_dai;
struct regmap *regmap;
int val_bytes;
struct mutex io_mutex;
/* attached dynamic objects */
struct list_head dobj_list;
/*
* DO NOT use any of the fields below in drivers, they are temporary and
* are going to be removed again soon. If you use them in driver code
* the driver will be marked as BROKEN when these fields are removed.
*/
/* Don't use these, use snd_soc_component_get_dapm() */
struct snd_soc_dapm_context dapm;
/* machine specific init */
int (*init)(struct snd_soc_component *component);
/* function mark */
struct snd_pcm_substream *mark_module;
struct snd_pcm_substream *mark_open;
void *mark_pm;
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_root;
const char *debugfs_prefix;
#endif
};
#define for_each_component_dais(component, dai)\
list_for_each_entry(dai, &(component)->dai_list, list)
#define for_each_component_dais_safe(component, dai, _dai)\
list_for_each_entry_safe(dai, _dai, &(component)->dai_list, list)
/**
* snd_soc_dapm_to_component() - Casts a DAPM context to the component it is
* embedded in
* @dapm: The DAPM context to cast to the component
*
* This function must only be used on DAPM contexts that are known to be part of
* a component (e.g. in a component driver). Otherwise the behavior is
* undefined.
*/
static inline struct snd_soc_component *snd_soc_dapm_to_component(
struct snd_soc_dapm_context *dapm)
{
return container_of(dapm, struct snd_soc_component, dapm);
}
/**
* snd_soc_component_get_dapm() - Returns the DAPM context associated with a
* component
* @component: The component for which to get the DAPM context
*/
static inline struct snd_soc_dapm_context *snd_soc_component_get_dapm(
struct snd_soc_component *component)
{
return &component->dapm;
}
/**
* snd_soc_component_init_bias_level() - Initialize COMPONENT DAPM bias level
* @component: The COMPONENT for which to initialize the DAPM bias level
* @level: The DAPM level to initialize to
*
* Initializes the COMPONENT DAPM bias level. See snd_soc_dapm_init_bias_level()
*/
static inline void
snd_soc_component_init_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
snd_soc_dapm_init_bias_level(
snd_soc_component_get_dapm(component), level);
}
/**
* snd_soc_component_get_bias_level() - Get current COMPONENT DAPM bias level
* @component: The COMPONENT for which to get the DAPM bias level
*
* Returns: The current DAPM bias level of the COMPONENT.
*/
static inline enum snd_soc_bias_level
snd_soc_component_get_bias_level(struct snd_soc_component *component)
{
return snd_soc_dapm_get_bias_level(
snd_soc_component_get_dapm(component));
}
/**
* snd_soc_component_force_bias_level() - Set the COMPONENT DAPM bias level
* @component: The COMPONENT for which to set the level
* @level: The level to set to
*
* Forces the COMPONENT bias level to a specific state. See
* snd_soc_dapm_force_bias_level().
*/
static inline int
snd_soc_component_force_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
return snd_soc_dapm_force_bias_level(
snd_soc_component_get_dapm(component),
level);
}
/**
* snd_soc_dapm_kcontrol_component() - Returns the component associated to a
* kcontrol
* @kcontrol: The kcontrol
*
* This function must only be used on DAPM contexts that are known to be part of
* a COMPONENT (e.g. in a COMPONENT driver). Otherwise the behavior is undefined
*/
static inline struct snd_soc_component *snd_soc_dapm_kcontrol_component(
struct snd_kcontrol *kcontrol)
{
return snd_soc_dapm_to_component(snd_soc_dapm_kcontrol_dapm(kcontrol));
}
/**
* snd_soc_component_cache_sync() - Sync the register cache with the hardware
* @component: COMPONENT to sync
*
* Note: This function will call regcache_sync()
*/
static inline int snd_soc_component_cache_sync(
struct snd_soc_component *component)
{
return regcache_sync(component->regmap);
}
void snd_soc_component_set_aux(struct snd_soc_component *component,
struct snd_soc_aux_dev *aux);
int snd_soc_component_init(struct snd_soc_component *component);
/* component IO */
unsigned int snd_soc_component_read(struct snd_soc_component *component,
unsigned int reg);
int snd_soc_component_write(struct snd_soc_component *component,
unsigned int reg, unsigned int val);
int snd_soc_component_update_bits(struct snd_soc_component *component,
unsigned int reg, unsigned int mask,
unsigned int val);
int snd_soc_component_update_bits_async(struct snd_soc_component *component,
unsigned int reg, unsigned int mask,
unsigned int val);
void snd_soc_component_async_complete(struct snd_soc_component *component);
int snd_soc_component_test_bits(struct snd_soc_component *component,
unsigned int reg, unsigned int mask,
unsigned int value);
/* component wide operations */
int snd_soc_component_set_sysclk(struct snd_soc_component *component,
int clk_id, int source,
unsigned int freq, int dir);
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 snd_soc_component_set_jack(struct snd_soc_component *component,
struct snd_soc_jack *jack, void *data);
void snd_soc_component_seq_notifier(struct snd_soc_component *component,
enum snd_soc_dapm_type type, int subseq);
int snd_soc_component_stream_event(struct snd_soc_component *component,
int event);
int snd_soc_component_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level);
void snd_soc_component_setup_regmap(struct snd_soc_component *component);
#ifdef CONFIG_REGMAP
void snd_soc_component_init_regmap(struct snd_soc_component *component,
struct regmap *regmap);
void snd_soc_component_exit_regmap(struct snd_soc_component *component);
#endif
#define snd_soc_component_module_get_when_probe(component)\
snd_soc_component_module_get(component, NULL, 0)
#define snd_soc_component_module_get_when_open(component, substream) \
snd_soc_component_module_get(component, substream, 1)
int snd_soc_component_module_get(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
int upon_open);
#define snd_soc_component_module_put_when_remove(component) \
snd_soc_component_module_put(component, NULL, 0, 0)
#define snd_soc_component_module_put_when_close(component, substream, rollback) \
snd_soc_component_module_put(component, substream, 1, rollback)
void snd_soc_component_module_put(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
int upon_open, int rollback);
static inline void snd_soc_component_set_drvdata(struct snd_soc_component *c,
void *data)
{
dev_set_drvdata(c->dev, data);
}
static inline void *snd_soc_component_get_drvdata(struct snd_soc_component *c)
{
return dev_get_drvdata(c->dev);
}
static inline unsigned int
snd_soc_component_active(struct snd_soc_component *component)
{
return component->active;
}
/* component pin */
int snd_soc_component_enable_pin(struct snd_soc_component *component,
const char *pin);
int snd_soc_component_enable_pin_unlocked(struct snd_soc_component *component,
const char *pin);
int snd_soc_component_disable_pin(struct snd_soc_component *component,
const char *pin);
int snd_soc_component_disable_pin_unlocked(struct snd_soc_component *component,
const char *pin);
int snd_soc_component_nc_pin(struct snd_soc_component *component,
const char *pin);
int snd_soc_component_nc_pin_unlocked(struct snd_soc_component *component,
const char *pin);
int snd_soc_component_get_pin_status(struct snd_soc_component *component,
const char *pin);
int snd_soc_component_force_enable_pin(struct snd_soc_component *component,
const char *pin);
int snd_soc_component_force_enable_pin_unlocked(
struct snd_soc_component *component,
const char *pin);
/* component driver ops */
int snd_soc_component_open(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
int snd_soc_component_close(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
int rollback);
void snd_soc_component_suspend(struct snd_soc_component *component);
void snd_soc_component_resume(struct snd_soc_component *component);
int snd_soc_component_is_suspended(struct snd_soc_component *component);
int snd_soc_component_probe(struct snd_soc_component *component);
void snd_soc_component_remove(struct snd_soc_component *component);
int snd_soc_component_of_xlate_dai_id(struct snd_soc_component *component,
struct device_node *ep);
int snd_soc_component_of_xlate_dai_name(struct snd_soc_component *component,
struct of_phandle_args *args,
const char **dai_name);
int snd_soc_pcm_component_pointer(struct snd_pcm_substream *substream);
int snd_soc_pcm_component_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg);
int snd_soc_pcm_component_sync_stop(struct snd_pcm_substream *substream);
int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
void __user *buf, unsigned long bytes);
struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substream,
unsigned long offset);
int snd_soc_pcm_component_mmap(struct snd_pcm_substream *substream,
struct vm_area_struct *vma);
int snd_soc_pcm_component_new(struct snd_soc_pcm_runtime *rtd);
void snd_soc_pcm_component_free(struct snd_soc_pcm_runtime *rtd);
int snd_soc_pcm_component_prepare(struct snd_pcm_substream *substream);
int snd_soc_pcm_component_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_component **last);
void snd_soc_pcm_component_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_component *last);
int snd_soc_pcm_component_trigger(struct snd_pcm_substream *substream,
int cmd);
int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd,
void *stream);
void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,
void *stream, int rollback);
#endif /* __SOC_COMPONENT_H */
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