/** * struct snd_soc_usb_device - SoC USB representation of a USB sound device * @card_idx: sound card index associated with USB device * @chip_idx: USB sound chip array index * @cpcm_idx: capture PCM index array associated with USB device * @ppcm_idx: playback PCM index array associated with USB device * @num_capture: number of capture streams * @num_playback: number of playback streams * @list: list head for SoC USB devices
**/ struct snd_soc_usb_device { int card_idx; int chip_idx;
/* PCM index arrays */ unsignedint *cpcm_idx; /* TODO: capture path is not tested yet */ unsignedint *ppcm_idx; int num_capture; /* TODO: capture path is not tested yet */ int num_playback;
struct list_head list;
};
/** * struct snd_soc_usb - representation of a SoC USB backend entity * @list: list head for SND SOC struct list * @component: reference to ASoC component * @connection_status_cb: callback to notify connection events * @update_offload_route_info: callback to fetch mapped ASoC card and pcm * device pair. This is unrelated to the concept * of DAPM route. The "route" argument carries * an array used for a kcontrol output for either * the card or pcm index. "path" determines the * which entry to look for. (ie mapped card or pcm) * @priv_data: driver data
**/ struct snd_soc_usb { struct list_head list; struct snd_soc_component *component; int (*connection_status_cb)(struct snd_soc_usb *usb, struct snd_soc_usb_device *sdev, bool connected); int (*update_offload_route_info)(struct snd_soc_component *component, int card, int pcm, int direction, enum snd_soc_usb_kctl path, long *route); void *priv_data;
};
#if IS_ENABLED(CONFIG_SND_SOC_USB) int snd_soc_usb_find_supported_format(int card_idx, struct snd_pcm_hw_params *params, int direction);
int snd_soc_usb_connect(struct device *usbdev, struct snd_soc_usb_device *sdev); int snd_soc_usb_disconnect(struct device *usbdev, struct snd_soc_usb_device *sdev); void *snd_soc_usb_find_priv_data(struct device *usbdev);
int snd_soc_usb_setup_offload_jack(struct snd_soc_component *component, struct snd_soc_jack *jack); int snd_soc_usb_update_offload_route(struct device *dev, int card, int pcm, int direction, enum snd_soc_usb_kctl path, long *route);
staticint snd_soc_usb_update_offload_route(struct device *dev, int card, int pcm, int direction, enum snd_soc_usb_kctl path, long *route)
{ return -ENODEV;
}
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