From 4d16700dd926d4c4a66a91a138c34eef4fd342b4 Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Mon, 27 Jan 2014 13:03:08 +0100 Subject: ASoC: tlv320aic32x4: DT support Add DT support for this codec. The bindings differ a bit from the aic3x codec bindings, so I created a new binding documentation. Signed-off-by: Markus Pargmann Signed-off-by: Mark Brown --- .../devicetree/bindings/sound/tlv320aic32x4.txt | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/tlv320aic32x4.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt new file mode 100644 index 000000000000..db0551088cc4 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt @@ -0,0 +1,18 @@ +Texas Instruments - tlv320aic32x4 Codec module + +The tlv320aic32x4 serial control bus communicates through I2C protocols + +Required properties: + - compatible: Should be "ti,tlv320aic32x4" + - reg: I2C slave address + +Optional properties: + - reset-gpios: Reset-GPIO phandle with args as described in gpio/gpio.txt + + +Example: + +codec: tlv320aic32x4@18 { + compatible = "ti,tlv320aic32x4"; + reg = <0x18>; +}; -- cgit v1.2.3 From 98b664e2ceddd40120e8cd2aa56f7eb9a51870cf Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Thu, 20 Feb 2014 18:22:58 +0100 Subject: ASoC: tlv320aic32x4: Support for master clock Add support for a master clock passed through DT. The master clock of the codec is only active when the codec is in use. Signed-off-by: Markus Pargmann Signed-off-by: Mark Brown --- .../devicetree/bindings/sound/tlv320aic32x4.txt | 4 ++++ sound/soc/codecs/tlv320aic32x4.c | 21 +++++++++++++++++++++ 2 files changed, 25 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt index db0551088cc4..352be7b1f7e2 100644 --- a/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt +++ b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt @@ -8,6 +8,8 @@ Required properties: Optional properties: - reset-gpios: Reset-GPIO phandle with args as described in gpio/gpio.txt + - clocks/clock-names: Clock named 'mclk' for the master clock of the codec. + See clock/clock-bindings.txt for information about the detailed format. Example: @@ -15,4 +17,6 @@ Example: codec: tlv320aic32x4@18 { compatible = "ti,tlv320aic32x4"; reg = <0x18>; + clocks = <&clks 201>; + clock-names = "mclk"; }; diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c index 1dd50e48934c..643fa53beaab 100644 --- a/sound/soc/codecs/tlv320aic32x4.c +++ b/sound/soc/codecs/tlv320aic32x4.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include @@ -67,6 +68,7 @@ struct aic32x4_priv { u32 micpga_routing; bool swapdacs; int rstn_gpio; + struct clk *mclk; }; /* 0dB min, 0.5dB steps */ @@ -487,8 +489,18 @@ static int aic32x4_mute(struct snd_soc_dai *dai, int mute) static int aic32x4_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { + struct aic32x4_priv *aic32x4 = snd_soc_codec_get_drvdata(codec); + int ret; + switch (level) { case SND_SOC_BIAS_ON: + /* Switch on master clock */ + ret = clk_prepare_enable(aic32x4->mclk); + if (ret) { + dev_err(codec->dev, "Failed to enable master clock\n"); + return ret; + } + /* Switch on PLL */ snd_soc_update_bits(codec, AIC32X4_PLLPR, AIC32X4_PLLEN, AIC32X4_PLLEN); @@ -539,6 +551,9 @@ static int aic32x4_set_bias_level(struct snd_soc_codec *codec, /* Switch off BCLK_N Divider */ snd_soc_update_bits(codec, AIC32X4_BCLKN, AIC32X4_BCLKEN, 0); + + /* Switch off master clock */ + clk_disable_unprepare(aic32x4->mclk); break; case SND_SOC_BIAS_OFF: break; @@ -717,6 +732,12 @@ static int aic32x4_i2c_probe(struct i2c_client *i2c, aic32x4->rstn_gpio = -1; } + aic32x4->mclk = devm_clk_get(&i2c->dev, "mclk"); + if (IS_ERR(aic32x4->mclk)) { + dev_err(&i2c->dev, "Failed getting the mclk. The current implementation does not support the usage of this codec without mclk\n"); + return PTR_ERR(aic32x4->mclk); + } + if (gpio_is_valid(aic32x4->rstn_gpio)) { ret = devm_gpio_request_one(&i2c->dev, aic32x4->rstn_gpio, GPIOF_OUT_INIT_LOW, "tlv320aic32x4 rstn"); -- cgit v1.2.3 From 239b669b2dedc46d5e6b07d87c3d1dedf8d9477c Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Thu, 20 Feb 2014 18:22:59 +0100 Subject: ASoC: tlv320aic32x4: Support for regulators Support regulators to power up the codec. This patch also enables the AVDD LDO if no AV regulator was found. Signed-off-by: Markus Pargmann Signed-off-by: Mark Brown --- .../devicetree/bindings/sound/tlv320aic32x4.txt | 8 ++ sound/soc/codecs/tlv320aic32x4.c | 126 ++++++++++++++++++++- 2 files changed, 133 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt index 352be7b1f7e2..5e2741af27be 100644 --- a/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt +++ b/Documentation/devicetree/bindings/sound/tlv320aic32x4.txt @@ -5,6 +5,14 @@ The tlv320aic32x4 serial control bus communicates through I2C protocols Required properties: - compatible: Should be "ti,tlv320aic32x4" - reg: I2C slave address + - supply-*: Required supply regulators are: + "iov" - digital IO power supply + "ldoin" - LDO power supply + "dv" - Digital core power supply + "av" - Analog core power supply + If you supply ldoin, dv and av are optional. Otherwise they are required + See regulator/regulator.txt for more information about the detailed binding + format. Optional properties: - reset-gpios: Reset-GPIO phandle with args as described in gpio/gpio.txt diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c index 643fa53beaab..d69c61ffcda8 100644 --- a/sound/soc/codecs/tlv320aic32x4.c +++ b/sound/soc/codecs/tlv320aic32x4.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include @@ -69,6 +70,11 @@ struct aic32x4_priv { bool swapdacs; int rstn_gpio; struct clk *mclk; + + struct regulator *supply_ldo; + struct regulator *supply_iov; + struct regulator *supply_dv; + struct regulator *supply_av; }; /* 0dB min, 0.5dB steps */ @@ -695,6 +701,106 @@ static int aic32x4_parse_dt(struct aic32x4_priv *aic32x4, return 0; } +static void aic32x4_disable_regulators(struct aic32x4_priv *aic32x4) +{ + regulator_disable(aic32x4->supply_iov); + + if (!IS_ERR(aic32x4->supply_ldo)) + regulator_disable(aic32x4->supply_ldo); + + if (!IS_ERR(aic32x4->supply_dv)) + regulator_disable(aic32x4->supply_dv); + + if (!IS_ERR(aic32x4->supply_av)) + regulator_disable(aic32x4->supply_av); +} + +static int aic32x4_setup_regulators(struct device *dev, + struct aic32x4_priv *aic32x4) +{ + int ret = 0; + + aic32x4->supply_ldo = devm_regulator_get_optional(dev, "ldoin"); + aic32x4->supply_iov = devm_regulator_get(dev, "iov"); + aic32x4->supply_dv = devm_regulator_get_optional(dev, "dv"); + aic32x4->supply_av = devm_regulator_get_optional(dev, "av"); + + /* Check if the regulator requirements are fulfilled */ + + if (IS_ERR(aic32x4->supply_iov)) { + dev_err(dev, "Missing supply 'iov'\n"); + return PTR_ERR(aic32x4->supply_iov); + } + + if (IS_ERR(aic32x4->supply_ldo)) { + if (PTR_ERR(aic32x4->supply_ldo) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + if (IS_ERR(aic32x4->supply_dv)) { + dev_err(dev, "Missing supply 'dv' or 'ldoin'\n"); + return PTR_ERR(aic32x4->supply_dv); + } + if (IS_ERR(aic32x4->supply_av)) { + dev_err(dev, "Missing supply 'av' or 'ldoin'\n"); + return PTR_ERR(aic32x4->supply_av); + } + } else { + if (IS_ERR(aic32x4->supply_dv) && + PTR_ERR(aic32x4->supply_dv) == -EPROBE_DEFER) + return -EPROBE_DEFER; + if (IS_ERR(aic32x4->supply_av) && + PTR_ERR(aic32x4->supply_av) == -EPROBE_DEFER) + return -EPROBE_DEFER; + } + + ret = regulator_enable(aic32x4->supply_iov); + if (ret) { + dev_err(dev, "Failed to enable regulator iov\n"); + return ret; + } + + if (!IS_ERR(aic32x4->supply_ldo)) { + ret = regulator_enable(aic32x4->supply_ldo); + if (ret) { + dev_err(dev, "Failed to enable regulator ldo\n"); + goto error_ldo; + } + } + + if (!IS_ERR(aic32x4->supply_dv)) { + ret = regulator_enable(aic32x4->supply_dv); + if (ret) { + dev_err(dev, "Failed to enable regulator dv\n"); + goto error_dv; + } + } + + if (!IS_ERR(aic32x4->supply_av)) { + ret = regulator_enable(aic32x4->supply_av); + if (ret) { + dev_err(dev, "Failed to enable regulator av\n"); + goto error_av; + } + } + + if (!IS_ERR(aic32x4->supply_ldo) && IS_ERR(aic32x4->supply_av)) + aic32x4->power_cfg |= AIC32X4_PWR_AIC32X4_LDO_ENABLE; + + return 0; + +error_av: + if (!IS_ERR(aic32x4->supply_dv)) + regulator_disable(aic32x4->supply_dv); + +error_dv: + if (!IS_ERR(aic32x4->supply_ldo)) + regulator_disable(aic32x4->supply_ldo); + +error_ldo: + regulator_disable(aic32x4->supply_iov); + return ret; +} + static int aic32x4_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { @@ -745,13 +851,31 @@ static int aic32x4_i2c_probe(struct i2c_client *i2c, return ret; } + ret = aic32x4_setup_regulators(&i2c->dev, aic32x4); + if (ret) { + dev_err(&i2c->dev, "Failed to setup regulators\n"); + return ret; + } + ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_aic32x4, &aic32x4_dai, 1); - return ret; + if (ret) { + dev_err(&i2c->dev, "Failed to register codec\n"); + aic32x4_disable_regulators(aic32x4); + return ret; + } + + i2c_set_clientdata(i2c, aic32x4); + + return 0; } static int aic32x4_i2c_remove(struct i2c_client *client) { + struct aic32x4_priv *aic32x4 = i2c_get_clientdata(client); + + aic32x4_disable_regulators(aic32x4); + snd_soc_unregister_codec(&client->dev); return 0; } -- cgit v1.2.3 From ac5630b504be8918f42f4bd62f75063e469adf8b Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Wed, 26 Feb 2014 17:14:33 +0100 Subject: ASoC: tlv320aic3x: Remove tlv320aic32x4 from compatibles of tlv320aic3x This reverts tlv320aic32x4 as compatible for tlv320aic3x as it has its own bindings now. Signed-off-by: Markus Pargmann Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/sound/tlv320aic3x.txt | 1 - 1 file changed, 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt index 9d8ea14db490..5e6040c2c2e9 100644 --- a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt +++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt @@ -6,7 +6,6 @@ Required properties: - compatible - "string" - One of: "ti,tlv320aic3x" - Generic TLV320AIC3x device - "ti,tlv320aic32x4" - TLV320AIC32x4 "ti,tlv320aic33" - TLV320AIC33 "ti,tlv320aic3007" - TLV320AIC3007 "ti,tlv320aic3106" - TLV320AIC3106 -- cgit v1.2.3