diff options
| author | Nikita Yushchenko <nikita.yoush@cogentembedded.com> | 2016-09-26 12:56:51 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-09-26 09:04:14 -0700 |
| commit | 899a247cf6d5bbb9eb799261791441d7d5ea2099 (patch) | |
| tree | 90641000368d883f44b6a43aa4d59f43275845db /sound | |
| parent | b0133d9c4d7600fa43499c12897136fb4f38fd57 (diff) | |
| download | linux-899a247cf6d5bbb9eb799261791441d7d5ea2099.tar.bz2 | |
ASoC: simple-card: add support for aux devices
Add device tree property to define auxiliary devices to be added to
simle-audio-card.
Together with proper audio routing definition, this allows to use
simple-card in setups where separate amplifier chip is connected to
codec's output.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/generic/simple-card.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index fe0bc5c469e2..f608f8d23f3d 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -318,6 +318,36 @@ dai_link_of_err: return ret; } +static int asoc_simple_card_parse_aux_devs(struct device_node *node, + struct simple_card_data *priv) +{ + struct device *dev = simple_priv_to_dev(priv); + struct device_node *aux_node; + int i, n, len; + + if (!of_find_property(node, PREFIX "aux-devs", &len)) + return 0; /* Ok to have no aux-devs */ + + n = len / sizeof(__be32); + if (n <= 0) + return -EINVAL; + + priv->snd_card.aux_dev = devm_kzalloc(dev, + n * sizeof(*priv->snd_card.aux_dev), GFP_KERNEL); + if (!priv->snd_card.aux_dev) + return -ENOMEM; + + for (i = 0; i < n; i++) { + aux_node = of_parse_phandle(node, PREFIX "aux-devs", i); + if (!aux_node) + return -EINVAL; + priv->snd_card.aux_dev[i].codec_of_node = aux_node; + } + + priv->snd_card.num_aux_devs = n; + return 0; +} + static int asoc_simple_card_parse_of(struct device_node *node, struct simple_card_data *priv) { @@ -372,6 +402,10 @@ static int asoc_simple_card_parse_of(struct device_node *node, } ret = asoc_simple_card_parse_card_name(&priv->snd_card, PREFIX); + if (ret < 0) + goto card_parse_end; + + ret = asoc_simple_card_parse_aux_devs(node, priv); card_parse_end: of_node_put(dai_link); |