mt_soc_snd_init.pdf
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2020-03-10
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snd_soc_card
指针赋值给driver_data
+rtd是个数组，数组大小等
于dai_link大小
snd_kcontrol
通过snd_ctl_new1
创建snd_kcontrol_new
snd_soc_dai_link
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const char *name
const char *cpu_name
const char *cpu_dai_name
const char *codec_name
const char *codec_dai_name
struct snd_soc_dai_link_component *
codecs
const struct snd_soc_pcm_stream *params
const struct snd_soc_ops *ops;
const char *platform_name
struct device_node *cpu_of_node
struct device_node *codec_of_node
: char
: int
: int
: int
: int
: snd_soc_dai_link_component
: int
: int
: int
: int
: int
snd_soc_pcm_stream
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const char *stream_name
unsigned int rates
unsigned int rate_min
unsigned int rate_max
unsigned int channels_min
unsigned int channels_max
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snd_pcm_substream
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struct snd_pcm *pcm
struct snd_pcm_str *pstr
void *private_data
char name[32]
int stream
const struct snd_pcm_ops *ops
struct snd_pcm_runtime *runtime
struct snd_pcm_substream *next;
struct list_head link_list
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snd_soc_pcm_runtime
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struct device *dev
struct snd_soc_card *card;
struct snd_pcm_ops ops;
struct snd_pcm *pcm;
struct snd_soc_dai_link *dai_link
struct snd_soc_codec *codec;
struct snd_soc_platform *platform
struct snd_soc_dai *codec_dai
struct snd_soc_dai *cpu_dai
struct snd_soc_component *component
struct snd_soc_dai **codec_dais
snd_card
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char id[16]
char driver[16]
struct list_head devices
struct device ctl_dev
struct list_head controls
struct device *dev
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+ void *private_data ()
snd_soc_card
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const char *name
const char *driver_name;
struct device *dev
struct snd_card *snd_card
struct snd_soc_dai_link *dai_link
struct snd_soc_pcm_runtime *rtd
const struct snd_kcontrol_new *controls
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+ int (*probe)(struct snd_soc_card *card)
()
mt_soc_snd_init
device
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struct device *parent;
struct device_driver *driver
void *platform_data
void *driver_data
const struct device_type *type
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+dai_link 数组
snd_soc_dai_link_component
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const char *name
struct device_node *of_node
const char *dai_name
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mt_snd_soc_card_mt 填充
snd_soc_dai
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const char *name
struct device *dev
struct snd_soc_dai_driver *driver
struct snd_soc_codec *codec;
struct snd_soc_component *component
struct list_head list
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snd_soc_platform
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struct device *dev;
const struct snd_soc_platform_driver *
driver
struct list_head list
structsnd_soc_component component
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snd_soc_codec
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struct device *dev
const struct snd_soc_codec_driver *
driver;
struct list_head list;
struct list_head card_list;
struct snd_soc_component component
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通过soc_bind_dai_link 绑定对应的cpu_dai
code_dai codec platform
+codec
+platform
+code_dai/cpu_dai
snd_pcm
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struct snd_card *card;
struct list_head list;
struct snd_pcm_str streams[2]
void *private_data
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snd_pcm_str
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int stream
struct snd_pcm *pcm
unsigned int substream_count
struct snd_pcm_substream *substream
unsigned int substream_opened;
struct device dev
struct snd_kcontrol *chmap_kctl
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snd_pcm_ops
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int (*open)(struct snd_pcm_substream *
substream) ()
int (*close)(struct snd_pcm_substream *
substream); ()
int (*hw_params)(struct snd_pcm_
substream *substream,
struct snd_
pcm_hw_params *params) ()
int (*hw_free)(struct snd_pcm_
substream *substream) ()
int (*ioctl)(struct snd_pcm_substream *
substream,
unsigned int cmd,
void *arg); ()
snd_pcm_uframes_t (*pointer)(struct snd_
pcm_substream *substream) ()
+ops
+pcm
snd_kcontrol_new
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snd_ctl_elem_iface_t iface
unsigned int device;
unsigned int subdevice
const unsigned char *name
snd_kcontrol_info_t
snd_kcontrol_get_t
snd_kcontrol_put_t
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snd_kcontrol
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struct list_head list
struct snd_ctl_elem_id id;
unsigned int count;
snd_kcontrol_get_t *get
snd_kcontrol_put_t *put
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+snd_card
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