diff mbox series

[v4,12/32] sound: usb: Export USB SND APIs for modules

Message ID 20230725023416.11205-13-quic_wcheng@quicinc.com
State New
Headers show
Series Introduce QC USB SND audio offloading support | expand

Commit Message

Wesley Cheng July 25, 2023, 2:33 a.m. UTC 
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(-)

Comments

Greg Kroah-Hartman July 25, 2023, 5:33 a.m. UTC | #1 
On Mon, Jul 24, 2023 at 07:33:56PM -0700, Wesley Cheng wrote:
> --- 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);

This is a horrible symbol name for a global function, same for the other
ones in this file.  If you really want to export them, please put them
in the proper "snd_" prefix namespace, or better yet, use a module
namespace as well to ensure that we know who is using them.

thanks,

greg k-h
diff mbox series

Patch

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 */