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-rw-r--r--sound/soc/codecs/Kconfig6
-rw-r--r--sound/soc/codecs/cs4270.c93
-rw-r--r--sound/soc/soc-core.c5
3 files changed, 44 insertions, 60 deletions
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index a195303603e..628a591c728 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -67,12 +67,6 @@ config SND_SOC_AK4535
config SND_SOC_CS4270
tristate
-# Cirrus Logic CS4270 Codec Hardware Mute Support
-# Select if you have external muting circuitry attached to your CS4270.
-config SND_SOC_CS4270_HWMUTE
- bool
- depends on SND_SOC_CS4270
-
# Cirrus Logic CS4270 Codec VD = 3.3V Errata
# Select if you are affected by the errata where the part will not function
# if MCLK divide-by-1.5 is selected and VD is set to 3.3V. The driver will
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c
index 2c79a24186f..cd4a9ee38e4 100644
--- a/sound/soc/codecs/cs4270.c
+++ b/sound/soc/codecs/cs4270.c
@@ -395,17 +395,7 @@ static int cs4270_hw_params(struct snd_pcm_substream *substream,
return -EINVAL;
}
- /* Freeze and power-down the codec */
-
- ret = snd_soc_write(codec, CS4270_PWRCTL, CS4270_PWRCTL_FREEZE |
- CS4270_PWRCTL_PDN_ADC | CS4270_PWRCTL_PDN_DAC |
- CS4270_PWRCTL_PDN);
- if (ret < 0) {
- dev_err(codec->dev, "i2c write failed\n");
- return ret;
- }
-
- /* Program the mode control register */
+ /* Set the sample rate */
reg = snd_soc_read(codec, CS4270_MODE);
reg &= ~(CS4270_MODE_SPEED_MASK | CS4270_MODE_DIV_MASK);
@@ -417,7 +407,7 @@ static int cs4270_hw_params(struct snd_pcm_substream *substream,
return ret;
}
- /* Program the format register */
+ /* Set the DAI format */
reg = snd_soc_read(codec, CS4270_FORMAT);
reg &= ~(CS4270_FORMAT_DAC_MASK | CS4270_FORMAT_ADC_MASK);
@@ -440,42 +430,9 @@ static int cs4270_hw_params(struct snd_pcm_substream *substream,
return ret;
}
- /* Disable auto-mute. This feature appears to be buggy, because in
- some situations, auto-mute will not deactivate when it should. */
-
- reg = snd_soc_read(codec, CS4270_MUTE);
- reg &= ~CS4270_MUTE_AUTO;
- ret = snd_soc_write(codec, CS4270_MUTE, reg);
- if (ret < 0) {
- dev_err(codec->dev, "i2c write failed\n");
- return ret;
- }
-
- /* Disable automatic volume control. It's enabled by default, and
- * it causes volume change commands to be delayed, sometimes until
- * after playback has started.
- */
-
- reg = cs4270_read_reg_cache(codec, CS4270_TRANS);
- reg &= ~(CS4270_TRANS_SOFT | CS4270_TRANS_ZERO);
- ret = cs4270_i2c_write(codec, CS4270_TRANS, reg);
- if (ret < 0) {
- dev_err(codec->dev, "i2c write failed\n");
- return ret;
- }
-
- /* Thaw and power-up the codec */
-
- ret = snd_soc_write(codec, CS4270_PWRCTL, 0);
- if (ret < 0) {
- dev_err(codec->dev, "i2c write failed\n");
- return ret;
- }
-
return ret;
}
-#ifdef CONFIG_SND_SOC_CS4270_HWMUTE
/**
* cs4270_mute - enable/disable the CS4270 external mute
* @dai: the SOC DAI
@@ -494,22 +451,23 @@ static int cs4270_mute(struct snd_soc_dai *dai, int mute)
reg6 = snd_soc_read(codec, CS4270_MUTE);
if (mute)
- reg6 |= CS4270_MUTE_ADC_A | CS4270_MUTE_ADC_B |
- CS4270_MUTE_DAC_A | CS4270_MUTE_DAC_B;
+ reg6 |= CS4270_MUTE_DAC_A | CS4270_MUTE_DAC_B;
else
- reg6 &= ~(CS4270_MUTE_ADC_A | CS4270_MUTE_ADC_B |
- CS4270_MUTE_DAC_A | CS4270_MUTE_DAC_B);
+ reg6 &= ~(CS4270_MUTE_DAC_A | CS4270_MUTE_DAC_B);
return snd_soc_write(codec, CS4270_MUTE, reg6);
}
-#else
-#define cs4270_mute NULL
-#endif
/* A list of non-DAPM controls that the CS4270 supports */
static const struct snd_kcontrol_new cs4270_snd_controls[] = {
SOC_DOUBLE_R("Master Playback Volume",
- CS4270_VOLA, CS4270_VOLB, 0, 0xFF, 1)
+ CS4270_VOLA, CS4270_VOLB, 0, 0xFF, 1),
+ SOC_SINGLE("Digital Sidetone Switch", CS4270_FORMAT, 5, 1, 0),
+ SOC_SINGLE("Soft Ramp Switch", CS4270_TRANS, 6, 1, 0),
+ SOC_SINGLE("Zero Cross Switch", CS4270_TRANS, 5, 1, 0),
+ SOC_SINGLE("Popguard Switch", CS4270_MODE, 0, 1, 1),
+ SOC_SINGLE("Auto-Mute Switch", CS4270_MUTE, 5, 1, 0),
+ SOC_DOUBLE("Master Capture Switch", CS4270_MUTE, 3, 4, 1, 0)
};
/*
@@ -637,6 +595,7 @@ static int cs4270_i2c_probe(struct i2c_client *i2c_client,
{
struct snd_soc_codec *codec;
struct cs4270_private *cs4270;
+ unsigned int reg;
int ret;
/* For now, we only support one cs4270 device in the system. See the
@@ -702,6 +661,34 @@ static int cs4270_i2c_probe(struct i2c_client *i2c_client,
goto error_free_codec;
}
+ /* Disable auto-mute. This feature appears to be buggy. In some
+ * situations, auto-mute will not deactivate when it should, so we want
+ * this feature disabled by default. An application (e.g. alsactl) can
+ * re-enabled it by using the controls.
+ */
+
+ reg = cs4270_read_reg_cache(codec, CS4270_MUTE);
+ reg &= ~CS4270_MUTE_AUTO;
+ ret = cs4270_i2c_write(codec, CS4270_MUTE, reg);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "i2c write failed\n");
+ return ret;
+ }
+
+ /* Disable automatic volume control. The hardware enables, and it
+ * causes volume change commands to be delayed, sometimes until after
+ * playback has started. An application (e.g. alsactl) can
+ * re-enabled it by using the controls.
+ */
+
+ reg = cs4270_read_reg_cache(codec, CS4270_TRANS);
+ reg &= ~(CS4270_TRANS_SOFT | CS4270_TRANS_ZERO);
+ ret = cs4270_i2c_write(codec, CS4270_TRANS, reg);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "i2c write failed\n");
+ return ret;
+ }
+
/* Initialize the DAI. Normally, we'd prefer to have a kmalloc'd DAI
* structure for each CS4270 device, but the machine driver needs to
* have a pointer to the DAI structure, so for now it must be a global
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 580a1a534ad..d4b90d82a09 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1382,7 +1382,10 @@ int snd_soc_init_card(struct snd_soc_device *socdev)
mutex_lock(&codec->mutex);
#ifdef CONFIG_SND_SOC_AC97_BUS
- if (ac97) {
+ /* Only instantiate AC97 if not already done by the adaptor
+ * for the generic AC97 subsystem.
+ */
+ if (ac97 && strcmp(codec->name, "AC97") != 0) {
ret = soc_ac97_dev_register(codec);
if (ret < 0) {
printk(KERN_ERR "asoc: AC97 device register failed\n");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 22:50:18 +0000