This is another preliminary patch for USB MIDI 2.0 gadget driver. Export the currently local snd_ump_receive_ump_val(). It can be used by the gadget driver for processing the UMP data.
Signed-off-by: Takashi Iwai tiwai@suse.de --- include/sound/ump.h | 1 + sound/core/ump.c | 11 ++++++++--- 2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/include/sound/ump.h b/include/sound/ump.h index 2f6a9944c6ef..44d2c2fd021d 100644 --- a/include/sound/ump.h +++ b/include/sound/ump.h @@ -109,6 +109,7 @@ static inline int snd_ump_attach_legacy_rawmidi(struct snd_ump_endpoint *ump, } #endif
+int snd_ump_receive_ump_val(struct snd_ump_endpoint *ump, u32 val); int snd_ump_switch_protocol(struct snd_ump_endpoint *ump, unsigned int protocol);
/* diff --git a/sound/core/ump.c b/sound/core/ump.c index 5e73c9cf5919..5e17351ca984 100644 --- a/sound/core/ump.c +++ b/sound/core/ump.c @@ -263,12 +263,16 @@ static unsigned char ump_packet_words[0x10] = { 1, 1, 1, 2, 2, 4, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4 };
-/* parse the UMP packet data; - * the data is copied onto ump->input_buf[]. +/** + * snd_ump_receive_ump_val - parse the UMP packet data + * @ump: UMP endpoint + * @val: UMP packet data + * + * The data is copied onto ump->input_buf[]. * When a full packet is completed, returns the number of words (from 1 to 4). * OTOH, if the packet is incomplete, returns 0. */ -static int snd_ump_receive_ump_val(struct snd_ump_endpoint *ump, u32 val) +int snd_ump_receive_ump_val(struct snd_ump_endpoint *ump, u32 val) { int words;
@@ -284,6 +288,7 @@ static int snd_ump_receive_ump_val(struct snd_ump_endpoint *ump, u32 val) } return 0; } +EXPORT_SYMBOL_GPL(snd_ump_receive_ump_val);
/** * snd_ump_receive - transfer UMP packets from the device