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Message-Id: <1396733753-9820-3-git-send-email-sre@kernel.org>
Date: Sat, 5 Apr 2014 23:35:50 +0200
From: Sebastian Reichel <sre@...nel.org>
To: Sebastian Reichel <sre@...g0.de>, Mark Brown <broonie@...nel.org>,
Peter Ujfalusi <peter.ujfalusi@...com>
Cc: Rob Herring <rob.herring@...xeda.com>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Tony Lindgren <tony@...mide.com>,
Liam Girdwood <lgirdwood@...il.com>,
Jarkko Nikula <jarkko.nikula@...mer.com>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-omap@...r.kernel.org, alsa-devel@...a-project.org,
Sebastian Reichel <sre@...nel.org>, Pavel Machek <pavel@....cz>
Subject: [PATCH 2/5] ASoC: Allow Aux Codecs to be specified using DT
This patch adds support for specifying auxiliary codecs and
codec configuration via device tree phandles.
This change adds new fields to snd_soc_aux_dev and snd_soc_codec_conf
and adds support for the changes to SoC core methods.
Signed-off-by: Sebastian Reichel <sre@...nel.org>
Signed-off-by: Pavel Machek <pavel@....cz>
---
include/sound/soc.h | 13 +++++++++-
sound/soc/soc-core.c | 68 ++++++++++++++++++++++++++++++++--------------------
2 files changed, 54 insertions(+), 27 deletions(-)
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 0b83168..d371ae1 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -931,7 +931,12 @@ struct snd_soc_dai_link {
};
struct snd_soc_codec_conf {
+ /*
+ * specify device either by device name, or by
+ * DT/OF node, but not both.
+ */
const char *dev_name;
+ const struct device_node *of_node;
/*
* optional map of kcontrol, widget and path name prefixes that are
@@ -942,7 +947,13 @@ struct snd_soc_codec_conf {
struct snd_soc_aux_dev {
const char *name; /* Codec name */
- const char *codec_name; /* for multi-codec */
+
+ /*
+ * specify multi-codec either by device name, or by
+ * DT/OF node, but not both.
+ */
+ const char *codec_name;
+ const struct device_node *codec_of_node;
/* codec/machine specific init - e.g. add machine controls */
int (*init)(struct snd_soc_dapm_context *dapm);
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 051c006..448a607 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1104,10 +1104,12 @@ static void soc_set_name_prefix(struct snd_soc_card *card,
for (i = 0; i < card->num_configs; i++) {
struct snd_soc_codec_conf *map = &card->codec_conf[i];
- if (map->dev_name && !strcmp(codec->name, map->dev_name)) {
- codec->name_prefix = map->name_prefix;
- break;
- }
+ if (map->of_node && codec->dev->of_node != map->of_node)
+ continue;
+ if (map->dev_name && strcmp(codec->name, map->dev_name))
+ continue;
+ codec->name_prefix = map->name_prefix;
+ break;
}
}
@@ -1541,52 +1543,66 @@ static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec)
}
#endif
-static int soc_check_aux_dev(struct snd_soc_card *card, int num)
+struct snd_soc_codec *soc_find_matching_codec(struct snd_soc_card *card, int num)
{
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
struct snd_soc_codec *codec;
- /* find CODEC from registered CODECs*/
+ /* find CODEC from registered CODECs */
list_for_each_entry(codec, &codec_list, list) {
- if (!strcmp(codec->name, aux_dev->codec_name))
- return 0;
+ if (aux_dev->codec_of_node &&
+ (codec->dev->of_node != aux_dev->codec_of_node))
+ continue;
+ if (aux_dev->codec_name && strcmp(codec->name, aux_dev->codec_name))
+ continue;
+ return codec;
}
- dev_err(card->dev, "ASoC: %s not registered\n", aux_dev->codec_name);
+ return NULL;
+}
+
+static int soc_check_aux_dev(struct snd_soc_card *card, int num)
+{
+ struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
+ const char *codecname = aux_dev->codec_name;
+ struct snd_soc_codec *codec = soc_find_matching_codec(card, num);
+ if (codec)
+ return 0;
+ if (aux_dev->codec_of_node)
+ codecname = of_node_full_name(aux_dev->codec_of_node);
+
+ dev_err(card->dev, "ASoC: %s not registered\n", codecname);
return -EPROBE_DEFER;
}
static int soc_probe_aux_dev(struct snd_soc_card *card, int num)
{
struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num];
- struct snd_soc_codec *codec;
+ const char *codecname = aux_dev->codec_name;
int ret = -ENODEV;
+ struct snd_soc_codec *codec = soc_find_matching_codec(card, num);
- /* find CODEC from registered CODECs*/
- list_for_each_entry(codec, &codec_list, list) {
- if (!strcmp(codec->name, aux_dev->codec_name)) {
- if (codec->probed) {
- dev_err(codec->dev,
- "ASoC: codec already probed");
- ret = -EBUSY;
- goto out;
- }
- goto found;
- }
+ if (!codec) {
+ if (aux_dev->codec_of_node)
+ codecname = of_node_full_name(aux_dev->codec_of_node);
+
+ /* codec not found */
+ dev_err(card->dev, "ASoC: codec %s not found", codecname);
+ return -EPROBE_DEFER;
+ }
+
+ if (codec->probed) {
+ dev_err(codec->dev, "ASoC: codec already probed");
+ return -EBUSY;
}
- /* codec not found */
- dev_err(card->dev, "ASoC: codec %s not found", aux_dev->codec_name);
- return -EPROBE_DEFER;
-found:
ret = soc_probe_codec(card, codec);
if (ret < 0)
return ret;
ret = soc_post_component_init(card, codec, num, 1);
-out:
return ret;
}
--
1.9.1
--
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