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-rw-r--r--Documentation/devicetree/bindings/sound/adi,adau17x1.txt8
-rw-r--r--sound/soc/codecs/adau1761-i2c.c2
-rw-r--r--sound/soc/codecs/adau1761-spi.c2
-rw-r--r--sound/soc/codecs/adau1781-i2c.c2
-rw-r--r--sound/soc/codecs/adau1781-spi.c2
-rw-r--r--sound/soc/codecs/adau17x1.c219
-rw-r--r--sound/soc/codecs/adau17x1.h6
7 files changed, 179 insertions, 62 deletions
diff --git a/Documentation/devicetree/bindings/sound/adi,adau17x1.txt b/Documentation/devicetree/bindings/sound/adi,adau17x1.txt
index 8dbce0e18dda..1447dec28125 100644
--- a/Documentation/devicetree/bindings/sound/adi,adau17x1.txt
+++ b/Documentation/devicetree/bindings/sound/adi,adau17x1.txt
@@ -13,6 +13,11 @@ Required properties:
- reg: The i2c address. Value depends on the state of ADDR0
and ADDR1, as wired in hardware.
+Optional properties:
+ - clock-names: If provided must be "mclk".
+ - clocks: phandle + clock-specifiers for the clock that provides
+ the audio master clock for the device.
+
Examples:
#include <dt-bindings/sound/adau17x1.h>
@@ -20,5 +25,8 @@ Examples:
adau1361@38 {
compatible = "adi,adau1761";
reg = <0x38>;
+
+ clock-names = "mclk";
+ clocks = <&audio_clock>;
};
};
diff --git a/sound/soc/codecs/adau1761-i2c.c b/sound/soc/codecs/adau1761-i2c.c
index 8de010f758cd..9e7f257f17f8 100644
--- a/sound/soc/codecs/adau1761-i2c.c
+++ b/sound/soc/codecs/adau1761-i2c.c
@@ -31,7 +31,7 @@ static int adau1761_i2c_probe(struct i2c_client *client,
static int adau1761_i2c_remove(struct i2c_client *client)
{
- snd_soc_unregister_codec(&client->dev);
+ adau17x1_remove(&client->dev);
return 0;
}
diff --git a/sound/soc/codecs/adau1761-spi.c b/sound/soc/codecs/adau1761-spi.c
index d9171245bd9f..a0b214be759a 100644
--- a/sound/soc/codecs/adau1761-spi.c
+++ b/sound/soc/codecs/adau1761-spi.c
@@ -48,7 +48,7 @@ static int adau1761_spi_probe(struct spi_device *spi)
static int adau1761_spi_remove(struct spi_device *spi)
{
- snd_soc_unregister_codec(&spi->dev);
+ adau17x1_remove(&spi->dev);
return 0;
}
diff --git a/sound/soc/codecs/adau1781-i2c.c b/sound/soc/codecs/adau1781-i2c.c
index 06cbca84cf02..7b9d1802d159 100644
--- a/sound/soc/codecs/adau1781-i2c.c
+++ b/sound/soc/codecs/adau1781-i2c.c
@@ -31,7 +31,7 @@ static int adau1781_i2c_probe(struct i2c_client *client,
static int adau1781_i2c_remove(struct i2c_client *client)
{
- snd_soc_unregister_codec(&client->dev);
+ adau17x1_remove(&client->dev);
return 0;
}
diff --git a/sound/soc/codecs/adau1781-spi.c b/sound/soc/codecs/adau1781-spi.c
index 3d965a01b99c..9b233544d2e8 100644
--- a/sound/soc/codecs/adau1781-spi.c
+++ b/sound/soc/codecs/adau1781-spi.c
@@ -48,7 +48,7 @@ static int adau1781_spi_probe(struct spi_device *spi)
static int adau1781_spi_remove(struct spi_device *spi)
{
- snd_soc_unregister_codec(&spi->dev);
+ adau17x1_remove(&spi->dev);
return 0;
}
diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c
index 66a6e061923d..439aa3ff1f99 100644
--- a/sound/soc/codecs/adau17x1.c
+++ b/sound/soc/codecs/adau17x1.c
@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <sound/core.h>
@@ -303,6 +304,116 @@ bool adau17x1_has_dsp(struct adau *adau)
}
EXPORT_SYMBOL_GPL(adau17x1_has_dsp);
+static int adau17x1_set_dai_pll(struct snd_soc_dai *dai, int pll_id,
+ int source, unsigned int freq_in, unsigned int freq_out)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct adau *adau = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ if (freq_in < 8000000 || freq_in > 27000000)
+ return -EINVAL;
+
+ ret = adau_calc_pll_cfg(freq_in, freq_out, adau->pll_regs);
+ if (ret < 0)
+ return ret;
+
+ /* The PLL register is 6 bytes long and can only be written at once. */
+ ret = regmap_raw_write(adau->regmap, ADAU17X1_PLL_CONTROL,
+ adau->pll_regs, ARRAY_SIZE(adau->pll_regs));
+ if (ret)
+ return ret;
+
+ adau->pll_freq = freq_out;
+
+ return 0;
+}
+
+static int adau17x1_set_dai_sysclk(struct snd_soc_dai *dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(dai->codec);
+ struct adau *adau = snd_soc_codec_get_drvdata(dai->codec);
+ bool is_pll;
+ bool was_pll;
+
+ switch (clk_id) {
+ case ADAU17X1_CLK_SRC_MCLK:
+ is_pll = false;
+ break;
+ case ADAU17X1_CLK_SRC_PLL_AUTO:
+ if (!adau->mclk)
+ return -EINVAL;
+ /* Fall-through */
+ case ADAU17X1_CLK_SRC_PLL:
+ is_pll = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (adau->clk_src) {
+ case ADAU17X1_CLK_SRC_MCLK:
+ was_pll = false;
+ break;
+ case ADAU17X1_CLK_SRC_PLL:
+ case ADAU17X1_CLK_SRC_PLL_AUTO:
+ was_pll = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ adau->sysclk = freq;
+
+ if (is_pll != was_pll) {
+ if (is_pll) {
+ snd_soc_dapm_add_routes(dapm,
+ &adau17x1_dapm_pll_route, 1);
+ } else {
+ snd_soc_dapm_del_routes(dapm,
+ &adau17x1_dapm_pll_route, 1);
+ }
+ }
+
+ adau->clk_src = clk_id;
+
+ return 0;
+}
+
+static int adau17x1_auto_pll(struct snd_soc_dai *dai,
+ struct snd_pcm_hw_params *params)
+{
+ struct adau *adau = snd_soc_dai_get_drvdata(dai);
+ unsigned int pll_rate;
+
+ switch (params_rate(params)) {
+ case 48000:
+ case 8000:
+ case 12000:
+ case 16000:
+ case 24000:
+ case 32000:
+ case 96000:
+ pll_rate = 48000 * 1024;
+ break;
+ case 44100:
+ case 7350:
+ case 11025:
+ case 14700:
+ case 22050:
+ case 29400:
+ case 88200:
+ pll_rate = 44100 * 1024;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return adau17x1_set_dai_pll(dai, ADAU17X1_PLL, ADAU17X1_PLL_SRC_MCLK,
+ clk_get_rate(adau->mclk), pll_rate);
+}
+
static int adau17x1_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
@@ -312,10 +423,19 @@ static int adau17x1_hw_params(struct snd_pcm_substream *substream,
unsigned int freq;
int ret;
- if (adau->clk_src == ADAU17X1_CLK_SRC_PLL)
+ switch (adau->clk_src) {
+ case ADAU17X1_CLK_SRC_PLL_AUTO:
+ ret = adau17x1_auto_pll(dai, params);
+ if (ret)
+ return ret;
+ /* Fall-through */
+ case ADAU17X1_CLK_SRC_PLL:
freq = adau->pll_freq;
- else
+ break;
+ default:
freq = adau->sysclk;
+ break;
+ }
if (freq % params_rate(params) != 0)
return -EINVAL;
@@ -387,62 +507,6 @@ static int adau17x1_hw_params(struct snd_pcm_substream *substream,
ADAU17X1_SERIAL_PORT1_DELAY_MASK, val);
}
-static int adau17x1_set_dai_pll(struct snd_soc_dai *dai, int pll_id,
- int source, unsigned int freq_in, unsigned int freq_out)
-{
- struct snd_soc_codec *codec = dai->codec;
- struct adau *adau = snd_soc_codec_get_drvdata(codec);
- int ret;
-
- if (freq_in < 8000000 || freq_in > 27000000)
- return -EINVAL;
-
- ret = adau_calc_pll_cfg(freq_in, freq_out, adau->pll_regs);
- if (ret < 0)
- return ret;
-
- /* The PLL register is 6 bytes long and can only be written at once. */
- ret = regmap_raw_write(adau->regmap, ADAU17X1_PLL_CONTROL,
- adau->pll_regs, ARRAY_SIZE(adau->pll_regs));
- if (ret)
- return ret;
-
- adau->pll_freq = freq_out;
-
- return 0;
-}
-
-static int adau17x1_set_dai_sysclk(struct snd_soc_dai *dai,
- int clk_id, unsigned int freq, int dir)
-{
- struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(dai->codec);
- struct adau *adau = snd_soc_codec_get_drvdata(dai->codec);
-
- switch (clk_id) {
- case ADAU17X1_CLK_SRC_MCLK:
- case ADAU17X1_CLK_SRC_PLL:
- break;
- default:
- return -EINVAL;
- }
-
- adau->sysclk = freq;
-
- if (adau->clk_src != clk_id) {
- if (clk_id == ADAU17X1_CLK_SRC_PLL) {
- snd_soc_dapm_add_routes(dapm,
- &adau17x1_dapm_pll_route, 1);
- } else {
- snd_soc_dapm_del_routes(dapm,
- &adau17x1_dapm_pll_route, 1);
- }
- }
-
- adau->clk_src = clk_id;
-
- return 0;
-}
-
static int adau17x1_set_dai_fmt(struct snd_soc_dai *dai,
unsigned int fmt)
{
@@ -827,6 +891,10 @@ int adau17x1_add_routes(struct snd_soc_codec *codec)
ret = snd_soc_dapm_add_routes(dapm, adau17x1_no_dsp_dapm_routes,
ARRAY_SIZE(adau17x1_no_dsp_dapm_routes));
}
+
+ if (adau->clk_src != ADAU17X1_CLK_SRC_MCLK)
+ snd_soc_dapm_add_routes(dapm, &adau17x1_dapm_pll_route, 1);
+
return ret;
}
EXPORT_SYMBOL_GPL(adau17x1_add_routes);
@@ -849,6 +917,7 @@ int adau17x1_probe(struct device *dev, struct regmap *regmap,
const char *firmware_name)
{
struct adau *adau;
+ int ret;
if (IS_ERR(regmap))
return PTR_ERR(regmap);
@@ -857,6 +926,30 @@ int adau17x1_probe(struct device *dev, struct regmap *regmap,
if (!adau)
return -ENOMEM;
+ adau->mclk = devm_clk_get(dev, "mclk");
+ if (IS_ERR(adau->mclk)) {
+ if (PTR_ERR(adau->mclk) != -ENOENT)
+ return PTR_ERR(adau->mclk);
+ /* Clock is optional (for the driver) */
+ adau->mclk = NULL;
+ } else if (adau->mclk) {
+ adau->clk_src = ADAU17X1_CLK_SRC_PLL_AUTO;
+
+ /*
+ * Any valid PLL output rate will work at this point, use one
+ * that is likely to be chosen later as well. The register will
+ * be written when the PLL is powered up for the first time.
+ */
+ ret = adau_calc_pll_cfg(clk_get_rate(adau->mclk), 48000 * 1024,
+ adau->pll_regs);
+ if (ret < 0)
+ return ret;
+
+ ret = clk_prepare_enable(adau->mclk);
+ if (ret)
+ return ret;
+ }
+
adau->regmap = regmap;
adau->switch_mode = switch_mode;
adau->type = type;
@@ -880,6 +973,16 @@ int adau17x1_probe(struct device *dev, struct regmap *regmap,
}
EXPORT_SYMBOL_GPL(adau17x1_probe);
+void adau17x1_remove(struct device *dev)
+{
+ struct adau *adau = dev_get_drvdata(dev);
+
+ snd_soc_unregister_codec(dev);
+ if (adau->mclk)
+ clk_disable_unprepare(adau->mclk);
+}
+EXPORT_SYMBOL_GPL(adau17x1_remove);
+
MODULE_DESCRIPTION("ASoC ADAU1X61/ADAU1X81 common code");
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/adau17x1.h b/sound/soc/codecs/adau17x1.h
index 5ae87a084d97..bf04b7efee40 100644
--- a/sound/soc/codecs/adau17x1.h
+++ b/sound/soc/codecs/adau17x1.h
@@ -22,13 +22,18 @@ enum adau17x1_pll_src {
};
enum adau17x1_clk_src {
+ /* Automatically configure PLL based on the sample rate */
+ ADAU17X1_CLK_SRC_PLL_AUTO,
ADAU17X1_CLK_SRC_MCLK,
ADAU17X1_CLK_SRC_PLL,
};
+struct clk;
+
struct adau {
unsigned int sysclk;
unsigned int pll_freq;
+ struct clk *mclk;
enum adau17x1_clk_src clk_src;
enum adau17x1_type type;
@@ -52,6 +57,7 @@ int adau17x1_add_routes(struct snd_soc_codec *codec);
int adau17x1_probe(struct device *dev, struct regmap *regmap,
enum adau17x1_type type, void (*switch_mode)(struct device *dev),
const char *firmware_name);
+void adau17x1_remove(struct device *dev);
int adau17x1_set_micbias_voltage(struct snd_soc_codec *codec,
enum adau17x1_micbias_voltage micbias);
bool adau17x1_readable_register(struct device *dev, unsigned int reg);