At Wed, 22 Apr 2015 14:03:47 +0800, Jie Yang wrote:
Currently the ALSA jack core registers only input devices for each jack registered. These jack input devices are not readable by userspace devices that run as non root. This patch and the following series patches will implement kctls inside the core jack part, including kctls creating, status changing report, for both HD-Audio and ASoC jack. This allows non root userspace to read jack status and act on it.
This patch implement snd_jack_add_new_kctl(), which will create a kcontrol, add it to the card, and also attach it to the jack kctl list.
The patch also initial the jack kctl list after jack is newed, and report kctl status when doing jack report.
In the following patches, We will update snd_jack_new() to support phantom jack creating, and also enable a kcontrol creating at this jack new stage. After that, we can remove these part from HDA jack, and leave jack kctls handled by core part thoroughly.
Signed-off-by: Liam Girdwood liam.r.girdwood@linux.intel.com Modified-by: Jie Yang yang.jie@intel.com Signed-off-by: Jie Yang yang.jie@intel.com Reveiwed-by: Mark Brown broonie@kernel.org
include/sound/jack.h | 15 +++++++- sound/core/Kconfig | 3 -- sound/core/Makefile | 3 +- sound/core/jack.c | 104 +++++++++++++++++++++++++++++++++++++++++++++++++- sound/pci/hda/Kconfig | 1 - 5 files changed, 118 insertions(+), 8 deletions(-)
diff --git a/include/sound/jack.h b/include/sound/jack.h index 2182350..9781e75 100644 --- a/include/sound/jack.h +++ b/include/sound/jack.h @@ -73,6 +73,8 @@ enum snd_jack_types {
struct snd_jack { struct input_dev *input_dev;
- struct list_head kctl_list;
- struct snd_card *card; int registered; int type; const char *id;
@@ -82,10 +84,17 @@ struct snd_jack { void (*private_free)(struct snd_jack *); };
+struct snd_jack_kctl {
- struct snd_kcontrol *kctl;
- struct list_head list; /* list of controls belong to the same jack */
- unsigned int mask_bits; /* one of the corresponding bits of status change will report to this kctl */
+};
This struct isn't referred outside jack.c, so we can move it to jack.c. This hides the internal implementation details.
#ifdef CONFIG_SND_JACK
int snd_jack_new(struct snd_card *card, const char *id, int type, struct snd_jack **jack); +int snd_jack_add_new_kctl(struct snd_jack *jack, const char * name, int mask); void snd_jack_set_parent(struct snd_jack *jack, struct device *parent); int snd_jack_set_key(struct snd_jack *jack, enum snd_jack_types type, int keytype); @@ -93,13 +102,17 @@ int snd_jack_set_key(struct snd_jack *jack, enum snd_jack_types type, void snd_jack_report(struct snd_jack *jack, int status);
#else
static inline int snd_jack_new(struct snd_card *card, const char *id, int type, struct snd_jack **jack) { return 0; }
+static inline int snd_jack_add_new_kctl(struct snd_jack *jack, const char * name, int mask) +{
- return 0;
+}
static inline void snd_jack_set_parent(struct snd_jack *jack, struct device *parent) { diff --git a/sound/core/Kconfig b/sound/core/Kconfig index 313f22e..63cc2e9 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -221,9 +221,6 @@ config SND_PCM_XRUN_DEBUG config SND_VMASTER bool
-config SND_KCTL_JACK
- bool
config SND_DMA_SGBUF def_bool y depends on X86 diff --git a/sound/core/Makefile b/sound/core/Makefile index 4daf2f5..e041dc2 100644 --- a/sound/core/Makefile +++ b/sound/core/Makefile @@ -7,8 +7,7 @@ snd-y := sound.o init.o memory.o info.o control.o misc.o device.o snd-$(CONFIG_ISA_DMA_API) += isadma.o snd-$(CONFIG_SND_OSSEMUL) += sound_oss.o info_oss.o snd-$(CONFIG_SND_VMASTER) += vmaster.o -snd-$(CONFIG_SND_KCTL_JACK) += ctljack.o -snd-$(CONFIG_SND_JACK) += jack.o +snd-$(CONFIG_SND_JACK) += ctljack.o jack.o
I guess this breaks the build when CONFIG_SND_HDA_INPUT_JACK=n.
Takashi