On 1/18/2023 1:52 PM, Astrid Rost wrote:
Add a generic way to create jack inputs for auxiliary jack detection
drivers (e.g. via i2c, spi), which are not part of any real codec.
The simple-card can be used as combining card driver to add the jacks,
no new one is required.
Create a jack (for input-events) for jack devices in the auxiliary
device list (aux_devs). A device which has the functions set_jack and
get_jack_supported_type counts as jack device.
Add a devicetree entry, in case not all input types are required.
simple-card,aux-jack-types:
Array of snd_jack_type to create jack-input-event for jack devices in
aux-devs. If the setting is 0, the supported type of the device is used.
Signed-off-by: Astrid Rost <astrid.rost@xxxxxxxx>
---
include/sound/simple_card_utils.h | 3 ++
sound/soc/generic/simple-card-utils.c | 63 +++++++++++++++++++++++++++
sound/soc/generic/simple-card.c | 4 ++
3 files changed, 70 insertions(+)
diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index 38590f1ae9ee..a3f3f3aa9e6e 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -69,6 +69,7 @@ struct asoc_simple_priv {
} *dai_props;
struct asoc_simple_jack hp_jack;
struct asoc_simple_jack mic_jack;
+ struct snd_soc_jack *aux_jacks;
struct snd_soc_dai_link *dai_link;
struct asoc_simple_dai *dais;
struct snd_soc_dai_link_component *dlcs;
@@ -187,6 +188,8 @@ int asoc_simple_parse_pin_switches(struct snd_soc_card *card,
int asoc_simple_init_jack(struct snd_soc_card *card,
struct asoc_simple_jack *sjack,
int is_hp, char *prefix, char *pin);
+int asoc_simple_init_aux_jacks(struct asoc_simple_priv *priv,
+ char *prefix);
int asoc_simple_init_priv(struct asoc_simple_priv *priv,
struct link_info *li);
int asoc_simple_remove(struct platform_device *pdev);
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index e35becce9635..668123549fbf 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -786,6 +786,69 @@ int asoc_simple_init_jack(struct snd_soc_card *card,
}
EXPORT_SYMBOL_GPL(asoc_simple_init_jack);
+int asoc_simple_init_aux_jacks(struct asoc_simple_priv *priv, char *prefix)
+{
+ struct snd_soc_card *card = simple_priv_to_card(priv);
+ struct device *dev = card->dev;
+ struct snd_soc_component *component;
+ char prop[128];
+ int found_jack_index = 0;
+ int num = 0;
+ int ret;
+
+ if (priv->aux_jacks)
+ return 0;
+
+ snprintf(prop, sizeof(prop), "%saux-jack-types", prefix);
+ num = of_property_count_u32_elems(dev->of_node, prop);
+ if (num < 1)
+ return 0;
+
+ priv->aux_jacks = devm_kcalloc(card->dev, num,
+ sizeof(struct snd_soc_jack), GFP_KERNEL);
+ if (!priv->aux_jacks)
+ return -ENOMEM;
+
+ for_each_card_auxs(card, component) {
+ if (found_jack_index >= num)
+ break;
+
+ if (component->driver->set_jack &&
+ component->driver->get_jack_supported_type) {
This check is really weird, you are checking if callbacks exist at all,
which should be unnecessary as it duplicates the work oh
snd_soc_component_ functions. I would just try to call
snd_soc_component_get_jack_supported_type() directly and if it returns
-ENOTSUPP, just go to next iteration.
I guess your main problem is snd_soc_component_set_jack(), but you can
just call it with NULL jack to check if it returns -ENOTSUPP, but I
guess the overall asumption would be that if someone implements
.get_jack_supported_type, they also implemented .set_jack, so maybe it
is just unnecessary?
+ char id[128];
+ int type = 0;
+ struct snd_soc_jack *jack =
+ &(priv->aux_jacks[found_jack_index]);
+ int type_supp_mask =
+ snd_soc_component_get_jack_supported_type(
+ component);
+
+ ret = of_property_read_u32_index(
+ dev->of_node, prop, found_jack_index++, &type);
+ if (ret)
+ continue;
+
+ if (type)
+ type &= type_supp_mask; /* use only supported types */
+ else
+ type = type_supp_mask; /* use all supported types */
+
+ if (!type)
+ continue;
+
+ /* create jack */
+ snprintf(id, sizeof(id), "%s-jack", component->name);
+ ret = snd_soc_card_jack_new(card, id, type, jack);
+ if (ret)
+ continue;
+
+ (void)snd_soc_component_set_jack(component, jack, NULL);
+ }
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_init_aux_jacks);
+
int asoc_simple_init_priv(struct asoc_simple_priv *priv,
struct link_info *li)
{
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index feb55b66239b..e98932c16754 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -623,6 +623,10 @@ static int simple_soc_probe(struct snd_soc_card *card)
if (ret < 0)
return ret;
+ ret = asoc_simple_init_aux_jacks(priv, PREFIX);
+ if (ret < 0)
+ return ret;
+
return 0;
}
