From 293750f9bcb3368d5298ed1a091b5402de359d3b Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Thu, 4 Oct 2012 14:03:23 +0200 Subject: 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 Signed-off-by: Mark Brown --- sound/soc/codecs/cs4271.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) (limited to 'sound') diff --git a/sound/soc/codecs/cs4271.c b/sound/soc/codecs/cs4271.c index f994af34f55..2ac5fe61a96 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)); } -- cgit v1.2.3