diff options
| author | Daniel Mack <zonque@gmail.com> | 2012-10-04 14:03:23 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-15 03:08:20 +0200 |
| commit | 293750f9bcb3368d5298ed1a091b5402de359d3b (patch) | |
| tree | c547f655f4751e170a1275035c9a96e0beccfd2b | |
| parent | Linux 3.7-rc1 (diff) | |
| download | linux-293750f9bcb3368d5298ed1a091b5402de359d3b.tar.xz linux-293750f9bcb3368d5298ed1a091b5402de359d3b.zip | |
ASoC: cs4271: add support for AMUTEB=BMUTEC feature
The CS4271 has a feature to sync its analog mute flags, so one mute
circuitry can be used for both channels.
Give users access to this feature with a new DT property and a flag in
the platform data.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | Documentation/devicetree/bindings/sound/cs4271.txt | 2 | ||||
| -rw-r--r-- | include/sound/cs4271.h | 1 | ||||
| -rw-r--r-- | sound/soc/codecs/cs4271.c | 21 |
3 files changed, 21 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/sound/cs4271.txt b/Documentation/devicetree/bindings/sound/cs4271.txt index c81b5fd5a5bc..a850fb9c88ea 100644 --- a/Documentation/devicetree/bindings/sound/cs4271.txt +++ b/Documentation/devicetree/bindings/sound/cs4271.txt @@ -18,6 +18,8 @@ Optional properties: - reset-gpio: a GPIO spec to define which pin is connected to the chip's !RESET pin + - cirrus,amuteb-eq-bmutec: When given, the Codec's AMUTEB=BMUTEC flag + is enabled. Examples: diff --git a/include/sound/cs4271.h b/include/sound/cs4271.h index 50a059e7d116..6d9e15ed1dcf 100644 --- a/include/sound/cs4271.h +++ b/include/sound/cs4271.h @@ -19,6 +19,7 @@ struct cs4271_platform_data { int gpio_nreset; /* GPIO driving Reset pin, if any */ + int amutec_eq_bmutec:1; /* flag to enable AMUTEC=BMUTEC */ }; #endif /* __CS4271_H */ diff --git a/sound/soc/codecs/cs4271.c b/sound/soc/codecs/cs4271.c index f994af34f552..2ac5fe61a96c 100644 --- a/sound/soc/codecs/cs4271.c +++ b/sound/soc/codecs/cs4271.c @@ -474,15 +474,25 @@ static int cs4271_probe(struct snd_soc_codec *codec) struct cs4271_platform_data *cs4271plat = codec->dev->platform_data; int ret; int gpio_nreset = -EINVAL; + int amutec_eq_bmutec = 0; #ifdef CONFIG_OF - if (of_match_device(cs4271_dt_ids, codec->dev)) + if (of_match_device(cs4271_dt_ids, codec->dev)) { gpio_nreset = of_get_named_gpio(codec->dev->of_node, "reset-gpio", 0); + + if (!of_get_property(codec->dev->of_node, + "cirrus,amutec-eq-bmutec", NULL)) + amutec_eq_bmutec = 1; + } #endif - if (cs4271plat && gpio_is_valid(cs4271plat->gpio_nreset)) - gpio_nreset = cs4271plat->gpio_nreset; + if (cs4271plat) { + if (gpio_is_valid(cs4271plat->gpio_nreset)) + gpio_nreset = cs4271plat->gpio_nreset; + + amutec_eq_bmutec = cs4271plat->amutec_eq_bmutec; + } if (gpio_nreset >= 0) if (gpio_request(gpio_nreset, "CS4271 Reset")) @@ -528,6 +538,11 @@ static int cs4271_probe(struct snd_soc_codec *codec) /* Power-up sequence requires 85 uS */ udelay(85); + if (amutec_eq_bmutec) + snd_soc_update_bits(codec, CS4271_MODE2, + CS4271_MODE2_MUTECAEQUB, + CS4271_MODE2_MUTECAEQUB); + return snd_soc_add_codec_controls(codec, cs4271_snd_controls, ARRAY_SIZE(cs4271_snd_controls)); } |