Some vendor modules will utilize useful parsing and endpoint management APIs to start audio playback/capture.
Signed-off-by: Wesley Cheng quic_wcheng@quicinc.com --- sound/core/oss/pcm_oss.c | 4 ++-- sound/usb/card.c | 2 ++ sound/usb/endpoint.c | 2 ++ sound/usb/helper.c | 1 + sound/usb/pcm.c | 9 ++++++--- sound/usb/pcm.h | 12 ++++++++++++ 6 files changed, 25 insertions(+), 5 deletions(-)
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index 728c211142d1..7773b5362e1a 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -444,8 +444,8 @@ static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, }
static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params, - snd_pcm_hw_param_t var, unsigned int val, - int dir) + snd_pcm_hw_param_t var, unsigned int val, + int dir) { int changed; if (hw_is_mask(var)) { diff --git a/sound/usb/card.c b/sound/usb/card.c index 9365d1e17836..a3fad66a3337 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -1076,6 +1076,7 @@ int snd_usb_autoresume(struct snd_usb_audio *chip) } return 0; } +EXPORT_SYMBOL_GPL(snd_usb_autoresume);
void snd_usb_autosuspend(struct snd_usb_audio *chip) { @@ -1089,6 +1090,7 @@ void snd_usb_autosuspend(struct snd_usb_audio *chip) for (i = 0; i < chip->num_interfaces; i++) usb_autopm_put_interface(chip->intf[i]); } +EXPORT_SYMBOL_GPL(snd_usb_autosuspend);
static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) { diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c index a385e85c4650..0757499599c8 100644 --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -866,6 +866,7 @@ snd_usb_endpoint_open(struct snd_usb_audio *chip, mutex_unlock(&chip->mutex); return ep; } +EXPORT_SYMBOL_GPL(snd_usb_endpoint_open);
/* * snd_usb_endpoint_set_sync: Link data and sync endpoints @@ -1503,6 +1504,7 @@ int snd_usb_endpoint_prepare(struct snd_usb_audio *chip, mutex_unlock(&chip->mutex); return err; } +EXPORT_SYMBOL_GPL(snd_usb_endpoint_prepare);
/* get the current rate set to the given clock by any endpoint */ int snd_usb_endpoint_get_clock_rate(struct snd_usb_audio *chip, int clock) diff --git a/sound/usb/helper.c b/sound/usb/helper.c index bf80e55d013a..4322ae3738e6 100644 --- a/sound/usb/helper.c +++ b/sound/usb/helper.c @@ -62,6 +62,7 @@ void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype } return NULL; } +EXPORT_SYMBOL_GPL(snd_usb_find_csint_desc);
/* * Wrapper for usb_control_msg(). diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index eec5232f9fb2..b6fb6d84d9eb 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -87,7 +87,7 @@ static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream /* * find a matching audio format */ -static const struct audioformat * +const struct audioformat * find_format(struct list_head *fmt_list_head, snd_pcm_format_t format, unsigned int rate, unsigned int channels, bool strict_match, struct snd_usb_substream *subs) @@ -147,8 +147,9 @@ find_format(struct list_head *fmt_list_head, snd_pcm_format_t format, } return found; } +EXPORT_SYMBOL_GPL(find_format);
-static const struct audioformat * +const struct audioformat * find_substream_format(struct snd_usb_substream *subs, const struct snd_pcm_hw_params *params) { @@ -156,6 +157,7 @@ find_substream_format(struct snd_usb_substream *subs, params_rate(params), params_channels(params), true, subs); } +EXPORT_SYMBOL_GPL(find_substream_format);
bool snd_usb_pcm_has_fixed_rate(struct snd_usb_substream *subs) { @@ -446,7 +448,7 @@ int snd_usb_pcm_resume(struct snd_usb_stream *as) return 0; }
-static void close_endpoints(struct snd_usb_audio *chip, +void close_endpoints(struct snd_usb_audio *chip, struct snd_usb_substream *subs) { if (subs->data_endpoint) { @@ -460,6 +462,7 @@ static void close_endpoints(struct snd_usb_audio *chip, subs->sync_endpoint = NULL; } } +EXPORT_SYMBOL(close_endpoints);
/* * hw_params callback diff --git a/sound/usb/pcm.h b/sound/usb/pcm.h index 388fe2ba346d..b5216cb19e75 100644 --- a/sound/usb/pcm.h +++ b/sound/usb/pcm.h @@ -15,4 +15,16 @@ void snd_usb_preallocate_buffer(struct snd_usb_substream *subs); int snd_usb_audioformat_set_sync_ep(struct snd_usb_audio *chip, struct audioformat *fmt);
+void close_endpoints(struct snd_usb_audio *chip, + struct snd_usb_substream *subs); +int configure_endpoints(struct snd_usb_audio *chip, + struct snd_usb_substream *subs); + +const struct audioformat * +find_format(struct list_head *fmt_list_head, snd_pcm_format_t format, + unsigned int rate, unsigned int channels, bool strict_match, + struct snd_usb_substream *subs); +const struct audioformat * +find_substream_format(struct snd_usb_substream *subs, + const struct snd_pcm_hw_params *params); #endif /* __USBAUDIO_PCM_H */