#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
DAC33_FLUSH,
};
+enum dac33_fifo_modes {
+ DAC33_FIFO_BYPASS = 0,
+ DAC33_FIFO_MODE1,
+ DAC33_FIFO_MODE7,
+ DAC33_FIFO_LAST_MODE,
+};
+
+#define DAC33_NUM_SUPPLIES 3
+static const char *dac33_supply_names[DAC33_NUM_SUPPLIES] = {
+ "AVDD",
+ "DVDD",
+ "IOVDD",
+};
+
struct tlv320dac33_priv {
struct mutex mutex;
struct workqueue_struct *dac33_wq;
struct work_struct work;
struct snd_soc_codec codec;
+ struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES];
int power_gpio;
int chip_power;
int irq;
* this */
unsigned int nsample_max; /* nsample should not be higher than
* this */
- unsigned int nsample_switch; /* Use FIFO or bypass FIFO switch */
+ enum dac33_fifo_modes fifo_mode;/* FIFO mode selection */
unsigned int nsample; /* burst read amount from host */
+ u8 burst_bclkdiv; /* BCLK divider value in burst mode */
enum dac33_state state;
};
dac33_write(codec, DAC33_PWR_CTRL, reg);
}
-static void dac33_hard_power(struct snd_soc_codec *codec, int power)
+static int dac33_hard_power(struct snd_soc_codec *codec, int power)
{
struct tlv320dac33_priv *dac33 = codec->private_data;
+ int ret;
mutex_lock(&dac33->mutex);
if (power) {
- if (dac33->power_gpio >= 0) {
- gpio_set_value(dac33->power_gpio, 1);
- dac33->chip_power = 1;
- /* Restore registers */
- dac33_restore_regs(codec);
+ ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies),
+ dac33->supplies);
+ if (ret != 0) {
+ dev_err(codec->dev,
+ "Failed to enable supplies: %d\n", ret);
+ goto exit;
}
+
+ if (dac33->power_gpio >= 0)
+ gpio_set_value(dac33->power_gpio, 1);
+
+ dac33->chip_power = 1;
+
+ /* Restore registers */
+ dac33_restore_regs(codec);
+
dac33_soft_power(codec, 1);
} else {
dac33_soft_power(codec, 0);
- if (dac33->power_gpio >= 0) {
+ if (dac33->power_gpio >= 0)
gpio_set_value(dac33->power_gpio, 0);
- dac33->chip_power = 0;
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(dac33->supplies),
+ dac33->supplies);
+ if (ret != 0) {
+ dev_err(codec->dev,
+ "Failed to disable supplies: %d\n", ret);
+ goto exit;
}
+
+ dac33->chip_power = 0;
}
- mutex_unlock(&dac33->mutex);
+exit:
+ mutex_unlock(&dac33->mutex);
+ return ret;
}
static int dac33_get_nsample(struct snd_kcontrol *kcontrol,
return ret;
}
-static int dac33_get_nsample_switch(struct snd_kcontrol *kcontrol,
+static int dac33_get_fifo_mode(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct tlv320dac33_priv *dac33 = codec->private_data;
- ucontrol->value.integer.value[0] = dac33->nsample_switch;
+ ucontrol->value.integer.value[0] = dac33->fifo_mode;
return 0;
}
-static int dac33_set_nsample_switch(struct snd_kcontrol *kcontrol,
+static int dac33_set_fifo_mode(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct tlv320dac33_priv *dac33 = codec->private_data;
int ret = 0;
- if (dac33->nsample_switch == ucontrol->value.integer.value[0])
+ if (dac33->fifo_mode == ucontrol->value.integer.value[0])
return 0;
/* Do not allow changes while stream is running*/
if (codec->active)
return -EPERM;
if (ucontrol->value.integer.value[0] < 0 ||
- ucontrol->value.integer.value[0] > 1)
+ ucontrol->value.integer.value[0] >= DAC33_FIFO_LAST_MODE)
ret = -EINVAL;
else
- dac33->nsample_switch = ucontrol->value.integer.value[0];
+ dac33->fifo_mode = ucontrol->value.integer.value[0];
return ret;
}
+/* Codec operation modes */
+static const char *dac33_fifo_mode_texts[] = {
+ "Bypass", "Mode 1", "Mode 7"
+};
+
+static const struct soc_enum dac33_fifo_mode_enum =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(dac33_fifo_mode_texts),
+ dac33_fifo_mode_texts);
+
/*
* DACL/R digital volume control:
* from 0 dB to -63.5 in 0.5 dB steps
static const struct snd_kcontrol_new dac33_nsample_snd_controls[] = {
SOC_SINGLE_EXT("nSample", 0, 0, 5900, 0,
dac33_get_nsample, dac33_set_nsample),
- SOC_SINGLE_EXT("nSample Switch", 0, 0, 1, 0,
- dac33_get_nsample_switch, dac33_set_nsample_switch),
+ SOC_ENUM_EXT("FIFO Mode", dac33_fifo_mode_enum,
+ dac33_get_fifo_mode, dac33_set_fifo_mode),
};
/* Analog bypass */
static int dac33_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
+ int ret;
+
switch (level) {
case SND_SOC_BIAS_ON:
dac33_soft_power(codec, 1);
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
- if (codec->bias_level == SND_SOC_BIAS_OFF)
- dac33_hard_power(codec, 1);
+ if (codec->bias_level == SND_SOC_BIAS_OFF) {
+ ret = dac33_hard_power(codec, 1);
+ if (ret != 0)
+ return ret;
+ }
+
dac33_soft_power(codec, 0);
break;
case SND_SOC_BIAS_OFF:
- dac33_hard_power(codec, 0);
+ ret = dac33_hard_power(codec, 0);
+ if (ret != 0)
+ return ret;
+
break;
}
codec->bias_level = level;
return 0;
}
+static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33)
+{
+ struct snd_soc_codec *codec;
+
+ codec = &dac33->codec;
+
+ switch (dac33->fifo_mode) {
+ case DAC33_FIFO_MODE1:
+ dac33_write16(codec, DAC33_NSAMPLE_MSB,
+ DAC33_THRREG(dac33->nsample));
+ dac33_write16(codec, DAC33_PREFILL_MSB,
+ DAC33_THRREG(dac33->alarm_threshold));
+ break;
+ case DAC33_FIFO_MODE7:
+ dac33_write16(codec, DAC33_PREFILL_MSB,
+ DAC33_THRREG(10));
+ break;
+ default:
+ dev_warn(codec->dev, "Unhandled FIFO mode: %d\n",
+ dac33->fifo_mode);
+ break;
+ }
+}
+
+static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33)
+{
+ struct snd_soc_codec *codec;
+
+ codec = &dac33->codec;
+
+ switch (dac33->fifo_mode) {
+ case DAC33_FIFO_MODE1:
+ dac33_write16(codec, DAC33_NSAMPLE_MSB,
+ DAC33_THRREG(dac33->nsample));
+ break;
+ case DAC33_FIFO_MODE7:
+ /* At the moment we are not using interrupts in mode7 */
+ break;
+ default:
+ dev_warn(codec->dev, "Unhandled FIFO mode: %d\n",
+ dac33->fifo_mode);
+ break;
+ }
+}
+
static void dac33_work(struct work_struct *work)
{
struct snd_soc_codec *codec;
switch (dac33->state) {
case DAC33_PREFILL:
dac33->state = DAC33_PLAYBACK;
- dac33_write16(codec, DAC33_NSAMPLE_MSB,
- DAC33_THRREG(dac33->nsample));
- dac33_write16(codec, DAC33_PREFILL_MSB,
- DAC33_THRREG(dac33->alarm_threshold));
+ dac33_prefill_handler(dac33);
break;
case DAC33_PLAYBACK:
- dac33_write16(codec, DAC33_NSAMPLE_MSB,
- DAC33_THRREG(dac33->nsample));
+ dac33_playback_handler(dac33);
break;
case DAC33_IDLE:
break;
unsigned int pwr_ctrl;
/* Stop pending workqueue */
- if (dac33->nsample_switch)
+ if (dac33->fifo_mode)
cancel_work_sync(&dac33->work);
mutex_lock(&dac33->mutex);
}
#define CALC_OSCSET(rate, refclk) ( \
- ((((rate * 10000) / refclk) * 4096) + 5000) / 10000)
+ ((((rate * 10000) / refclk) * 4096) + 7000) / 10000)
#define CALC_RATIOSET(rate, refclk) ( \
((((refclk * 100000) / rate) * 16384) + 50000) / 100000)
struct snd_soc_codec *codec = socdev->card->codec;
struct tlv320dac33_priv *dac33 = codec->private_data;
unsigned int oscset, ratioset, pwr_ctrl, reg_tmp;
- u8 aictrl_a, fifoctrl_a;
+ u8 aictrl_a, aictrl_b, fifoctrl_a;
switch (substream->runtime->rate) {
case 44100:
aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A);
aictrl_a &= ~(DAC33_NCYCL_MASK | DAC33_WLEN_MASK);
+ /* Read FIFO control A, and clear FIFO flush bit */
fifoctrl_a = dac33_read_reg_cache(codec, DAC33_FIFO_CTRL_A);
+ fifoctrl_a &= ~DAC33_FIFOFLUSH;
+
fifoctrl_a &= ~DAC33_WIDTH;
switch (substream->runtime->format) {
case SNDRV_PCM_FORMAT_S16_LE:
dac33_oscwait(codec);
- if (dac33->nsample_switch) {
+ if (dac33->fifo_mode) {
+ /* Generic for all FIFO modes */
/* 50-51 : ASRC Control registers */
dac33_write(codec, DAC33_ASRC_CTRL_A, (1 << 4)); /* div=2 */
dac33_write(codec, DAC33_ASRC_CTRL_B, 1); /* ??? */
/* Set interrupts to high active */
dac33_write(codec, DAC33_INTP_CTRL_A, DAC33_INTPM_AHIGH);
-
- dac33_write(codec, DAC33_FIFO_IRQ_MODE_B,
- DAC33_ATM(DAC33_FIFO_IRQ_MODE_LEVEL));
- dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MAT);
} else {
+ /* FIFO bypass mode */
/* 50-51 : ASRC Control registers */
dac33_write(codec, DAC33_ASRC_CTRL_A, DAC33_SRCBYP);
dac33_write(codec, DAC33_ASRC_CTRL_B, 0); /* ??? */
}
- if (dac33->nsample_switch)
+ /* Interrupt behaviour configuration */
+ switch (dac33->fifo_mode) {
+ case DAC33_FIFO_MODE1:
+ dac33_write(codec, DAC33_FIFO_IRQ_MODE_B,
+ DAC33_ATM(DAC33_FIFO_IRQ_MODE_LEVEL));
+ dac33_write(codec, DAC33_FIFO_IRQ_MASK, DAC33_MAT);
+ break;
+ case DAC33_FIFO_MODE7:
+ /* Disable all interrupts */
+ dac33_write(codec, DAC33_FIFO_IRQ_MASK, 0);
+ break;
+ default:
+ /* in FIFO bypass mode, the interrupts are not used */
+ break;
+ }
+
+ aictrl_b = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B);
+
+ switch (dac33->fifo_mode) {
+ case DAC33_FIFO_MODE1:
+ /*
+ * For mode1:
+ * Disable the FIFO bypass (Enable the use of FIFO)
+ * Select nSample mode
+ * BCLK is only running when data is needed by DAC33
+ */
fifoctrl_a &= ~DAC33_FBYPAS;
- else
+ fifoctrl_a &= ~DAC33_FAUTO;
+ aictrl_b &= ~DAC33_BCLKON;
+ break;
+ case DAC33_FIFO_MODE7:
+ /*
+ * For mode1:
+ * Disable the FIFO bypass (Enable the use of FIFO)
+ * Select Threshold mode
+ * BCLK is only running when data is needed by DAC33
+ */
+ fifoctrl_a &= ~DAC33_FBYPAS;
+ fifoctrl_a |= DAC33_FAUTO;
+ aictrl_b &= ~DAC33_BCLKON;
+ break;
+ default:
+ /*
+ * For FIFO bypass mode:
+ * Enable the FIFO bypass (Disable the FIFO use)
+ * Set the BCLK as continous
+ */
fifoctrl_a |= DAC33_FBYPAS;
- dac33_write(codec, DAC33_FIFO_CTRL_A, fifoctrl_a);
+ aictrl_b |= DAC33_BCLKON;
+ break;
+ }
+ dac33_write(codec, DAC33_FIFO_CTRL_A, fifoctrl_a);
dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_A, aictrl_a);
- reg_tmp = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_B);
- if (dac33->nsample_switch)
- reg_tmp &= ~DAC33_BCLKON;
- else
- reg_tmp |= DAC33_BCLKON;
- dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_B, reg_tmp);
+ dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_B, aictrl_b);
- if (dac33->nsample_switch) {
- /* 20: BCLK divide ratio */
- dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 3);
+ /*
+ * BCLK divide ratio
+ * 0: 1.5
+ * 1: 1
+ * 2: 2
+ * ...
+ * 254: 254
+ * 255: 255
+ */
+ if (dac33->fifo_mode)
+ dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C,
+ dac33->burst_bclkdiv);
+ else
+ dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 32);
+ switch (dac33->fifo_mode) {
+ case DAC33_FIFO_MODE1:
dac33_write16(codec, DAC33_ATHR_MSB,
DAC33_THRREG(dac33->alarm_threshold));
- } else {
- dac33_write(codec, DAC33_SER_AUDIOIF_CTRL_C, 32);
+ break;
+ case DAC33_FIFO_MODE7:
+ /*
+ * Configure the threshold levels, and leave 10 sample space
+ * at the bottom, and also at the top of the FIFO
+ */
+ dac33_write16(codec, DAC33_UTHR_MSB,
+ DAC33_THRREG(DAC33_BUFFER_SIZE_SAMPLES - 10));
+ dac33_write16(codec, DAC33_LTHR_MSB,
+ DAC33_THRREG(10));
+ break;
+ default:
+ break;
}
mutex_unlock(&dac33->mutex);
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- if (dac33->nsample_switch) {
+ if (dac33->fifo_mode) {
dac33->state = DAC33_PREFILL;
queue_work(dac33->dac33_wq, &dac33->work);
}
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- if (dac33->nsample_switch) {
+ if (dac33->fifo_mode) {
dac33->state = DAC33_FLUSH;
queue_work(dac33->dac33_wq, &dac33->work);
}
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
+ struct tlv320dac33_priv *dac33 = codec->private_data;
u8 aictrl_a, aictrl_b;
aictrl_a = dac33_read_reg_cache(codec, DAC33_SER_AUDIOIF_CTRL_A);
break;
case SND_SOC_DAIFMT_CBS_CFS:
/* Codec Slave */
- aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK);
+ if (dac33->fifo_mode) {
+ dev_err(codec->dev, "FIFO mode requires master mode\n");
+ return -EINVAL;
+ } else
+ aictrl_a &= ~(DAC33_MSBCLK | DAC33_MSWCLK);
break;
default:
return -EINVAL;
/* power on device */
dac33_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+ /* Bias level configuration has enabled regulator an extra time */
+ regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), dac33->supplies);
+
return 0;
pcm_err:
};
EXPORT_SYMBOL_GPL(dac33_dai);
-static int dac33_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int __devinit dac33_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
struct tlv320dac33_platform_data *pdata;
struct tlv320dac33_priv *dac33;
struct snd_soc_codec *codec;
- int ret = 0;
+ int ret, i;
if (client->dev.platform_data == NULL) {
dev_err(&client->dev, "Platform data not set\n");
i2c_set_clientdata(client, dac33);
dac33->power_gpio = pdata->power_gpio;
+ dac33->burst_bclkdiv = pdata->burst_bclkdiv;
dac33->irq = client->irq;
dac33->nsample = NSAMPLE_MAX;
/* Disable FIFO use by default */
- dac33->nsample_switch = 0;
+ dac33->fifo_mode = DAC33_FIFO_BYPASS;
tlv320dac33_codec = codec;
}
}
+ for (i = 0; i < ARRAY_SIZE(dac33->supplies); i++)
+ dac33->supplies[i].supply = dac33_supply_names[i];
+
+ ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(dac33->supplies),
+ dac33->supplies);
+
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
+ goto err_get;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies),
+ dac33->supplies);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
+ goto err_enable;
+ }
+
ret = snd_soc_register_codec(codec);
if (ret != 0) {
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
return ret;
error_codec:
+ regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), dac33->supplies);
+err_enable:
+ regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
+err_get:
if (dac33->irq >= 0) {
free_irq(dac33->irq, &dac33->codec);
destroy_workqueue(dac33->dac33_wq);
return ret;
}
-static int dac33_i2c_remove(struct i2c_client *client)
+static int __devexit dac33_i2c_remove(struct i2c_client *client)
{
struct tlv320dac33_priv *dac33;
if (dac33->irq >= 0)
free_irq(dac33->irq, &dac33->codec);
+ regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
+
destroy_workqueue(dac33->dac33_wq);
snd_soc_unregister_dai(&dac33_dai);
snd_soc_unregister_codec(&dac33->codec);
projects / deliverable / linux.git / blobdiff