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-rw-r--r--include/sound/soc.h32
-rw-r--r--sound/soc/Kconfig1
-rw-r--r--sound/soc/Makefile2
-rw-r--r--sound/soc/soc-jack.c138
4 files changed, 172 insertions, 1 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 9b930d342116..9c3ef6a3e9fb 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -154,6 +154,8 @@ enum snd_soc_bias_level {
SND_SOC_BIAS_OFF,
};
+struct snd_jack;
+struct snd_soc_card;
struct snd_soc_device;
struct snd_soc_pcm_stream;
struct snd_soc_ops;
@@ -164,6 +166,8 @@ struct snd_soc_platform;
struct snd_soc_codec;
struct soc_enum;
struct snd_soc_ac97_ops;
+struct snd_soc_jack;
+struct snd_soc_jack_pin;
typedef int (*hw_write_t)(void *,const char* ,int);
typedef int (*hw_read_t)(void *,char* ,int);
@@ -184,6 +188,13 @@ int snd_soc_init_card(struct snd_soc_device *socdev);
int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
const struct snd_pcm_hardware *hw);
+/* Jack reporting */
+int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type,
+ struct snd_soc_jack *jack);
+void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
+int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
+ struct snd_soc_jack_pin *pins);
+
/* codec IO */
#define snd_soc_read(codec, reg) codec->read(codec, reg)
#define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)
@@ -239,6 +250,27 @@ int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
+/**
+ * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
+ *
+ * @pin: name of the pin to update
+ * @mask: bits to check for in reported jack status
+ * @invert: if non-zero then pin is enabled when status is not reported
+ */
+struct snd_soc_jack_pin {
+ struct list_head list;
+ const char *pin;
+ int mask;
+ bool invert;
+};
+
+struct snd_soc_jack {
+ struct snd_jack *jack;
+ struct snd_soc_card *card;
+ struct list_head pins;
+ int status;
+};
+
/* SoC PCM stream information */
struct snd_soc_pcm_stream {
char *stream_name;
diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig
index ef025c66cc66..3d2bb6fc6dcc 100644
--- a/sound/soc/Kconfig
+++ b/sound/soc/Kconfig
@@ -6,6 +6,7 @@ menuconfig SND_SOC
tristate "ALSA for SoC audio support"
select SND_PCM
select AC97_BUS if SND_SOC_AC97_BUS
+ select SND_JACK if INPUT=y || INPUT=SND
---help---
If you want ASoC support, you should say Y here and also to the
diff --git a/sound/soc/Makefile b/sound/soc/Makefile
index 86a9b1f5b0f3..0237879fd412 100644
--- a/sound/soc/Makefile
+++ b/sound/soc/Makefile
@@ -1,4 +1,4 @@
-snd-soc-core-objs := soc-core.o soc-dapm.o
+snd-soc-core-objs := soc-core.o soc-dapm.o soc-jack.o
obj-$(CONFIG_SND_SOC) += snd-soc-core.o
obj-$(CONFIG_SND_SOC) += codecs/
diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c
new file mode 100644
index 000000000000..8cc00c3cdf34
--- /dev/null
+++ b/sound/soc/soc-jack.c
@@ -0,0 +1,138 @@
+/*
+ * soc-jack.c -- ALSA SoC jack handling
+ *
+ * Copyright 2008 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <sound/jack.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+/**
+ * snd_soc_jack_new - Create a new jack
+ * @card: ASoC card
+ * @id: an identifying string for this jack
+ * @type: a bitmask of enum snd_jack_type values that can be detected by
+ * this jack
+ * @jack: structure to use for the jack
+ *
+ * Creates a new jack object.
+ *
+ * Returns zero if successful, or a negative error code on failure.
+ * On success jack will be initialised.
+ */
+int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type,
+ struct snd_soc_jack *jack)
+{
+ jack->card = card;
+ INIT_LIST_HEAD(&jack->pins);
+
+ return snd_jack_new(card->socdev->codec->card, id, type, &jack->jack);
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_new);
+
+/**
+ * snd_soc_jack_report - Report the current status for a jack
+ *
+ * @jack: the jack
+ * @status: a bitmask of enum snd_jack_type values that are currently detected.
+ * @mask: a bitmask of enum snd_jack_type values that being reported.
+ *
+ * If configured using snd_soc_jack_add_pins() then the associated
+ * DAPM pins will be enabled or disabled as appropriate and DAPM
+ * synchronised.
+ *
+ * Note: This function uses mutexes and should be called from a
+ * context which can sleep (such as a workqueue).
+ */
+void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask)
+{
+ struct snd_soc_codec *codec = jack->card->socdev->codec;
+ struct snd_soc_jack_pin *pin;
+ int enable;
+ int oldstatus;
+
+ if (!jack) {
+ WARN_ON_ONCE(!jack);
+ return;
+ }
+
+ mutex_lock(&codec->mutex);
+
+ oldstatus = jack->status;
+
+ jack->status &= ~mask;
+ jack->status |= status;
+
+ /* The DAPM sync is expensive enough to be worth skipping */
+ if (jack->status == oldstatus)
+ goto out;
+
+ list_for_each_entry(pin, &jack->pins, list) {
+ enable = pin->mask & status;
+
+ if (pin->invert)
+ enable = !enable;
+
+ if (enable)
+ snd_soc_dapm_enable_pin(codec, pin->pin);
+ else
+ snd_soc_dapm_disable_pin(codec, pin->pin);
+ }
+
+ snd_soc_dapm_sync(codec);
+
+ snd_jack_report(jack->jack, status);
+
+out:
+ mutex_unlock(&codec->mutex);
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_report);
+
+/**
+ * snd_soc_jack_add_pins - Associate DAPM pins with an ASoC jack
+ *
+ * @jack: ASoC jack
+ * @count: Number of pins
+ * @pins: Array of pins
+ *
+ * After this function has been called the DAPM pins specified in the
+ * pins array will have their status updated to reflect the current
+ * state of the jack whenever the jack status is updated.
+ */
+int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
+ struct snd_soc_jack_pin *pins)
+{
+ int i;
+
+ for (i = 0; i < count; i++) {
+ if (!pins[i].pin) {
+ printk(KERN_ERR "No name for pin %d\n", i);
+ return -EINVAL;
+ }
+ if (!pins[i].mask) {
+ printk(KERN_ERR "No mask for pin %d (%s)\n", i,
+ pins[i].pin);
+ return -EINVAL;
+ }
+
+ INIT_LIST_HEAD(&pins[i].list);
+ list_add(&(pins[i].list), &jack->pins);
+ }
+
+ /* Update to reflect the last reported status; canned jack
+ * implementations are likely to set their state before the
+ * card has an opportunity to associate pins.
+ */
+ snd_soc_jack_report(jack, 0, 0);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_jack_add_pins);