From 3706163140939bccd58fba739a9820f1d5eebeaf Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 13 Sep 2012 11:46:58 +0800 Subject: [PATCH] ASoC: wm8960: Support shared LRCLK If the LRCLK is shared and the WM8960 is clock master then we should enable the LRCM bit to tell the device that it should drive LRCLK when either ADC or DAC is enabled rather than separately driving the two LRCLKs. Signed-off-by: Mark Brown --- include/sound/wm8960.h | 2 ++ sound/soc/codecs/wm8960.c | 11 +++++++++++ 2 files changed, 13 insertions(+) diff --git a/include/sound/wm8960.h b/include/sound/wm8960.h index 74e9a95529c..b5a1ab9ebb4 100644 --- a/include/sound/wm8960.h +++ b/include/sound/wm8960.h @@ -19,6 +19,8 @@ struct wm8960_data { bool capless; /* Headphone outputs configured in capless mode */ int dres; /* Discharge resistance for headphone outputs */ + + bool shared_lrclk; /* DAC and ADC LRCLKs are wired together */ }; #endif diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c index 066250e3f7f..782faa0a3b4 100644 --- a/sound/soc/codecs/wm8960.c +++ b/sound/soc/codecs/wm8960.c @@ -1036,6 +1036,7 @@ static const struct regmap_config wm8960_regmap = { static __devinit int wm8960_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { + struct wm8960_data *pdata = dev_get_platdata(&i2c->dev); struct wm8960_priv *wm8960; int ret; @@ -1048,6 +1049,16 @@ static __devinit int wm8960_i2c_probe(struct i2c_client *i2c, if (IS_ERR(wm8960->regmap)) return PTR_ERR(wm8960->regmap); + if (pdata && pdata->shared_lrclk) { + ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2, + 0x4, 0x4); + if (ret != 0) { + dev_err(&i2c->dev, "Failed to enable LRCM: %d\n", + ret); + return ret; + } + } + i2c_set_clientdata(i2c, wm8960); ret = snd_soc_register_codec(&i2c->dev, -- 2.41.0