diff options
| author |   Charles Keepax <ckeepax@opensource.wolfsonmicro.com> | 2016-05-13 16:45:18 +0100 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2016-05-30 16:14:36 +0100 |
| commit | 2230c49f09b552454eac51b81e9e4e41060b5e70 (patch) | |
| tree | 3bc1af20fcf6cb5b3fc8c98f28cce333a6dc6dc5 /sound/soc | |
| parent | Linux 4.7-rc1 (diff) | |
| download | linux-dev-2230c49f09b552454eac51b81e9e4e41060b5e70.tar.xz linux-dev-2230c49f09b552454eac51b81e9e4e41060b5e70.zip | |
ASoC: arizona: Add a notifier chain for CODEC events
Add a notifier chain that can be used from the machine driver to catch
events generated by the CODEC.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/codecs/arizona.c | 35 | ||||
| -rw-r--r-- | sound/soc/codecs/arizona.h | 10 | ||||
| -rw-r--r-- | sound/soc/codecs/cs47l24.c | 1 | ||||
| -rw-r--r-- | sound/soc/codecs/wm5110.c | 1 |
4 files changed, 47 insertions, 0 deletions
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index 664a8c044ffb..7f9ab92ffa91 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -324,6 +324,17 @@ int arizona_init_gpio(struct snd_soc_codec *codec) } EXPORT_SYMBOL_GPL(arizona_init_gpio); +int arizona_init_notifiers(struct snd_soc_codec *codec) +{ + struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + struct arizona *arizona = priv->arizona; + + BLOCKING_INIT_NOTIFIER_HEAD(&arizona->notifier); + + return 0; +} +EXPORT_SYMBOL_GPL(arizona_init_notifiers); + const char * const arizona_mixer_texts[ARIZONA_NUM_MIXER_INPUTS] = { "None", "Tone Generator 1", @@ -2573,6 +2584,30 @@ int arizona_lhpf_coeff_put(struct snd_kcontrol *kcontrol, } EXPORT_SYMBOL_GPL(arizona_lhpf_coeff_put); +int arizona_register_notifier(struct snd_soc_codec *codec, + struct notifier_block *nb, + int (*notify)(struct notifier_block *nb, + unsigned long action, void *data)) +{ + struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + struct arizona *arizona = priv->arizona; + + nb->notifier_call = notify; + + return blocking_notifier_chain_register(&arizona->notifier, nb); +} +EXPORT_SYMBOL_GPL(arizona_register_notifier); + +int arizona_unregister_notifier(struct snd_soc_codec *codec, + struct notifier_block *nb) +{ + struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + struct arizona *arizona = priv->arizona; + + return blocking_notifier_chain_unregister(&arizona->notifier, nb); +} +EXPORT_SYMBOL_GPL(arizona_unregister_notifier); + MODULE_DESCRIPTION("ASoC Wolfson Arizona class device support"); MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h index ce0531b8c632..245d13c157a5 100644 --- a/sound/soc/codecs/arizona.h +++ b/sound/soc/codecs/arizona.h @@ -306,6 +306,7 @@ extern int arizona_set_fll(struct arizona_fll *fll, int source, extern int arizona_init_spk(struct snd_soc_codec *codec); extern int arizona_init_gpio(struct snd_soc_codec *codec); extern int arizona_init_mono(struct snd_soc_codec *codec); +extern int arizona_init_notifiers(struct snd_soc_codec *codec); extern int arizona_free_spk(struct snd_soc_codec *codec); @@ -317,4 +318,13 @@ int arizona_set_output_mode(struct snd_soc_codec *codec, int output, extern bool arizona_input_analog(struct snd_soc_codec *codec, int shift); extern const char *arizona_sample_rate_val_to_name(unsigned int rate_val); + +extern int arizona_register_notifier(struct snd_soc_codec *codec, + struct notifier_block *nb, + int (*notify)(struct notifier_block *nb, + unsigned long action, + void *data)); +extern int arizona_unregister_notifier(struct snd_soc_codec *codec, + struct notifier_block *nb); + #endif diff --git a/sound/soc/codecs/cs47l24.c b/sound/soc/codecs/cs47l24.c index 5ec5a682d186..fa9a6a5a6120 100644 --- a/sound/soc/codecs/cs47l24.c +++ b/sound/soc/codecs/cs47l24.c @@ -1096,6 +1096,7 @@ static int cs47l24_codec_probe(struct snd_soc_codec *codec) arizona_init_spk(codec); arizona_init_gpio(codec); arizona_init_mono(codec); + arizona_init_notifiers(codec); ret = arizona_request_irq(arizona, ARIZONA_IRQ_DSP_IRQ1, "ADSP2 Compressed IRQ", cs47l24_adsp2_irq, diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c index b5820e4d5471..338a3b52705b 100644 --- a/sound/soc/codecs/wm5110.c +++ b/sound/soc/codecs/wm5110.c @@ -2251,6 +2251,7 @@ static int wm5110_codec_probe(struct snd_soc_codec *codec) arizona_init_spk(codec); arizona_init_gpio(codec); arizona_init_mono(codec); + arizona_init_notifiers(codec); ret = arizona_request_irq(arizona, ARIZONA_IRQ_DSP_IRQ1, "ADSP2 Compressed IRQ", wm5110_adsp2_irq, |