Hi,
Am Montag, den 30.03.2015, 20:40 +0100 schrieb Russell King:
Add a helper to create the IEC958 channel status from an ALSA snd_pcm_runtime structure, taking account of the sample rate.
Signed-off-by: Russell King rmk+kernel@arm.linux.org.uk
include/sound/pcm_iec958.h | 9 ++++++ sound/core/Kconfig | 3 ++ sound/core/Makefile | 2 ++ sound/core/pcm_iec958.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 84 insertions(+) create mode 100644 include/sound/pcm_iec958.h create mode 100644 sound/core/pcm_iec958.c
diff --git a/include/sound/pcm_iec958.h b/include/sound/pcm_iec958.h new file mode 100644 index 000000000000..0eed397aca8e --- /dev/null +++ b/include/sound/pcm_iec958.h @@ -0,0 +1,9 @@ +#ifndef __SOUND_PCM_IEC958_H +#define __SOUND_PCM_IEC958_H
+#include <linux/types.h>
+int snd_pcm_create_iec958_consumer(struct snd_pcm_runtime *runtime, u8 *cs,
- size_t len);
+#endif diff --git a/sound/core/Kconfig b/sound/core/Kconfig index b534c8a6046b..1507469425ec 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -9,6 +9,9 @@ config SND_PCM config SND_PCM_ELD bool
+config SND_PCM_IEC958
- bool
config SND_DMAENGINE_PCM tristate
diff --git a/sound/core/Makefile b/sound/core/Makefile index 591b49157b4d..70ea06712ec2 100644 --- a/sound/core/Makefile +++ b/sound/core/Makefile @@ -14,10 +14,12 @@ snd-pcm-y := pcm.o pcm_native.o pcm_lib.o pcm_timer.o pcm_misc.o \ pcm_memory.o memalloc.o snd-pcm-$(CONFIG_SND_DMA_SGBUF) += sgbuf.o snd-pcm-$(CONFIG_SND_PCM_ELD) += pcm_drm_eld.o +snd-pcm-$(CONFIG_SND_PCM_IEC958) += snd-pcm-iec958.o
# for trace-points CFLAGS_pcm_lib.o := -I$(src)
+snd-pcm-iec958-objs := pcm_iec958.o snd-pcm-dmaengine-objs := pcm_dmaengine.o
This fails to build for me on 4.0-rc6: make[2]: *** No rule to make target 'sound/core/snd-pcm-iec958.o', needed by 'sound/core/snd-pcm.o'. Stop. scripts/Makefile.build:403: recipe for target 'sound/core' failed
unless I change it to either: --- a/sound/core/Makefile +++ b/sound/core/Makefile @@ -14,7 +14,8 @@ snd-pcm-y := pcm.o pcm_native.o pcm_lib.o pcm_timer.o pcm_misc.o \ pcm_memory.o memalloc.o snd-pcm-$(CONFIG_SND_DMA_SGBUF) += sgbuf.o snd-pcm-$(CONFIG_SND_PCM_ELD) += pcm_drm_eld.o -snd-pcm-$(CONFIG_SND_PCM_IEC958) += snd-pcm-iec958.o + +obj-$(CONFIG_SND_PCM_IEC958) += snd-pcm-iec958.o
# for trace-points CFLAGS_pcm_lib.o := -I$(src)
or: --- a/sound/core/Makefile +++ b/sound/core/Makefile @@ -14,12 +14,11 @@ snd-pcm-y := pcm.o pcm_native.o pcm_lib.o pcm_timer.o pcm_misc.o \ pcm_memory.o memalloc.o snd-pcm-$(CONFIG_SND_DMA_SGBUF) += sgbuf.o snd-pcm-$(CONFIG_SND_PCM_ELD) += pcm_drm_eld.o -snd-pcm-$(CONFIG_SND_PCM_IEC958) += snd-pcm-iec958.o +snd-pcm-$(CONFIG_SND_PCM_IEC958) += pcm_iec958.o
# for trace-points CFLAGS_pcm_lib.o := -I$(src)
-snd-pcm-iec958-objs := pcm_iec958.o snd-pcm-dmaengine-objs := pcm_dmaengine.o
snd-rawmidi-objs := rawmidi.o
regards Philipp