#include <linux/delay.h>
#include <linux/regulator/consumer.h>
-#include "cs4270.h"
-
/*
* The codec isn't really big-endian or little-endian, since the I2S
* interface requires data to be sent serially with the MSbit first.
/* Private data for the CS4270 */
struct cs4270_private {
- struct snd_soc_codec codec;
+ enum snd_soc_control_type control_type;
+ void *control_data;
u8 reg_cache[CS4270_NUMREGS];
unsigned int mclk; /* Input frequency of the MCLK pin */
unsigned int mode; /* The mode (I2S or left-justified) */
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
- struct cs4270_private *cs4270 = codec->private_data;
- unsigned int rates = 0;
- unsigned int rate_min = -1;
- unsigned int rate_max = 0;
- unsigned int i;
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
cs4270->mclk = freq;
-
- if (cs4270->mclk) {
- for (i = 0; i < NUM_MCLK_RATIOS; i++) {
- unsigned int rate = freq / cs4270_mode_ratios[i].ratio;
- rates |= snd_pcm_rate_to_rate_bit(rate);
- if (rate < rate_min)
- rate_min = rate;
- if (rate > rate_max)
- rate_max = rate;
- }
- /* FIXME: soc should support a rate list */
- rates &= ~SNDRV_PCM_RATE_KNOT;
-
- if (!rates) {
- dev_err(codec->dev, "could not find a valid sample rate\n");
- return -EINVAL;
- }
- } else {
- /* enable all possible rates */
- rates = SNDRV_PCM_RATE_8000_192000;
- rate_min = 8000;
- rate_max = 192000;
- }
-
- codec_dai->playback.rates = rates;
- codec_dai->playback.rate_min = rate_min;
- codec_dai->playback.rate_max = rate_max;
-
- codec_dai->capture.rates = rates;
- codec_dai->capture.rate_min = rate_min;
- codec_dai->capture.rate_max = rate_max;
-
return 0;
}
unsigned int format)
{
struct snd_soc_codec *codec = codec_dai->codec;
- struct cs4270_private *cs4270 = codec->private_data;
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
int ret = 0;
/* set DAI format */
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_device *socdev = rtd->socdev;
- struct snd_soc_codec *codec = socdev->card->codec;
- struct cs4270_private *cs4270 = codec->private_data;
+ struct snd_soc_codec *codec = rtd->codec;
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
int ret;
unsigned int i;
unsigned int rate;
static int cs4270_dai_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
- struct cs4270_private *cs4270 = codec->private_data;
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
int reg6;
reg6 = snd_soc_read(codec, CS4270_MUTE);
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
- struct cs4270_private *cs4270 = codec->private_data;
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
int left = !ucontrol->value.integer.value[0];
int right = !ucontrol->value.integer.value[1];
snd_soc_get_volsw, cs4270_soc_put_mute),
};
-/*
- * cs4270_codec - global variable to store codec for the ASoC probe function
- *
- * If struct i2c_driver had a private_data field, we wouldn't need to use
- * cs4270_codec. This is the only way to pass the codec structure from
- * cs4270_i2c_probe() to cs4270_probe(). Unfortunately, there is no good
- * way to synchronize these two functions. cs4270_i2c_probe() can be called
- * multiple times before cs4270_probe() is called even once. So for now, we
- * also only allow cs4270_i2c_probe() to be run once. That means that we do
- * not support more than one cs4270 device in the system, at least for now.
- */
-static struct snd_soc_codec *cs4270_codec;
-
static struct snd_soc_dai_ops cs4270_dai_ops = {
.hw_params = cs4270_hw_params,
.set_sysclk = cs4270_set_dai_sysclk,
.digital_mute = cs4270_dai_mute,
};
-struct snd_soc_dai cs4270_dai = {
- .name = "cs4270",
+struct snd_soc_dai_driver cs4270_dai = {
+ .name = "cs4270-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
- .rates = 0,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 4000,
+ .rate_max = 216000,
.formats = CS4270_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
- .rates = 0,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 4000,
+ .rate_max = 216000,
.formats = CS4270_FORMATS,
},
.ops = &cs4270_dai_ops,
* This function is called when ASoC has all the pieces it needs to
* instantiate a sound driver.
*/
-static int cs4270_probe(struct platform_device *pdev)
-{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = cs4270_codec;
- struct cs4270_private *cs4270 = codec->private_data;
- int i, ret;
-
- /* Connect the codec to the socdev. snd_soc_new_pcms() needs this. */
- socdev->card->codec = codec;
-
- /* Register PCMs */
- ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
- if (ret < 0) {
- dev_err(codec->dev, "failed to create pcms\n");
- return ret;
- }
-
- /* Add the non-DAPM controls */
- ret = snd_soc_add_controls(codec, cs4270_snd_controls,
- ARRAY_SIZE(cs4270_snd_controls));
- if (ret < 0) {
- dev_err(codec->dev, "failed to add controls\n");
- goto error_free_pcms;
- }
-
- /* get the power supply regulators */
- for (i = 0; i < ARRAY_SIZE(supply_names); i++)
- cs4270->supplies[i].supply = supply_names[i];
-
- ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(cs4270->supplies),
- cs4270->supplies);
- if (ret < 0)
- goto error_free_pcms;
-
- ret = regulator_bulk_enable(ARRAY_SIZE(cs4270->supplies),
- cs4270->supplies);
- if (ret < 0)
- goto error_free_regulators;
-
- return 0;
-
-error_free_regulators:
- regulator_bulk_free(ARRAY_SIZE(cs4270->supplies),
- cs4270->supplies);
-
-error_free_pcms:
- snd_soc_free_pcms(socdev);
-
- return ret;
-}
-
-/**
- * cs4270_remove - ASoC remove function
- * @pdev: platform device
- *
- * This function is the counterpart to cs4270_probe().
- */
-static int cs4270_remove(struct platform_device *pdev)
-{
- struct snd_soc_device *socdev = platform_get_drvdata(pdev);
- struct snd_soc_codec *codec = cs4270_codec;
- struct cs4270_private *cs4270 = codec->private_data;
-
- snd_soc_free_pcms(socdev);
- regulator_bulk_disable(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
- regulator_bulk_free(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
-
- return 0;
-};
-
-/**
- * cs4270_i2c_probe - initialize the I2C interface of the CS4270
- * @i2c_client: the I2C client object
- * @id: the I2C device ID (ignored)
- *
- * This function is called whenever the I2C subsystem finds a device that
- * matches the device ID given via a prior call to i2c_add_driver().
- */
-static int cs4270_i2c_probe(struct i2c_client *i2c_client,
- const struct i2c_device_id *id)
+static int cs4270_probe(struct snd_soc_codec *codec)
{
- 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
- * comment for cs4270_codec.
- */
- if (cs4270_codec) {
- dev_err(&i2c_client->dev, "ignoring CS4270 at addr %X\n",
- i2c_client->addr);
- dev_err(&i2c_client->dev, "only one per board allowed\n");
- /* Should we return something other than ENODEV here? */
- return -ENODEV;
- }
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
+ int i, ret, reg;
- /* Verify that we have a CS4270 */
-
- ret = i2c_smbus_read_byte_data(i2c_client, CS4270_CHIPID);
- if (ret < 0) {
- dev_err(&i2c_client->dev, "failed to read i2c at addr %X\n",
- i2c_client->addr);
- return ret;
- }
- /* The top four bits of the chip ID should be 1100. */
- if ((ret & 0xF0) != 0xC0) {
- dev_err(&i2c_client->dev, "device at addr %X is not a CS4270\n",
- i2c_client->addr);
- return -ENODEV;
- }
-
- dev_info(&i2c_client->dev, "found device at i2c address %X\n",
- i2c_client->addr);
- dev_info(&i2c_client->dev, "hardware revision %X\n", ret & 0xF);
-
- /* Allocate enough space for the snd_soc_codec structure
- and our private data together. */
- cs4270 = kzalloc(sizeof(struct cs4270_private), GFP_KERNEL);
- if (!cs4270) {
- dev_err(&i2c_client->dev, "could not allocate codec\n");
- return -ENOMEM;
- }
- codec = &cs4270->codec;
-
- mutex_init(&codec->mutex);
- INIT_LIST_HEAD(&codec->dapm_widgets);
- INIT_LIST_HEAD(&codec->dapm_paths);
-
- codec->dev = &i2c_client->dev;
- codec->name = "CS4270";
- codec->owner = THIS_MODULE;
- codec->dai = &cs4270_dai;
- codec->num_dai = 1;
- codec->private_data = cs4270;
- codec->control_data = i2c_client;
- codec->read = cs4270_read_reg_cache;
- codec->write = cs4270_i2c_write;
- codec->reg_cache = cs4270->reg_cache;
- codec->reg_cache_size = CS4270_NUMREGS;
+ codec->control_data = cs4270->control_data;
/* The I2C interface is set up, so pre-fill our register cache */
ret = cs4270_fill_cache(codec);
if (ret < 0) {
- dev_err(&i2c_client->dev, "failed to fill register cache\n");
- goto error_free_codec;
+ dev_err(codec->dev, "failed to fill register cache\n");
+ return ret;
}
/* Disable auto-mute. This feature appears to be buggy. In some
reg &= ~CS4270_MUTE_AUTO;
ret = cs4270_i2c_write(codec, CS4270_MUTE, reg);
if (ret < 0) {
- dev_err(&i2c_client->dev, "i2c write failed\n");
+ dev_err(codec->dev, "i2c write failed\n");
return ret;
}
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");
+ dev_err(codec->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
- * variable.
- */
- cs4270_dai.dev = &i2c_client->dev;
-
- /* Register the DAI. If all the other ASoC driver have already
- * registered, then this will call our probe function, so
- * cs4270_codec needs to be ready.
- */
- cs4270_codec = codec;
- ret = snd_soc_register_dai(&cs4270_dai);
+ /* Add the non-DAPM controls */
+ ret = snd_soc_add_controls(codec, cs4270_snd_controls,
+ ARRAY_SIZE(cs4270_snd_controls));
if (ret < 0) {
- dev_err(&i2c_client->dev, "failed to register DAIe\n");
- goto error_free_codec;
+ dev_err(codec->dev, "failed to add controls\n");
+ return ret;
}
- i2c_set_clientdata(i2c_client, cs4270);
+ /* get the power supply regulators */
+ for (i = 0; i < ARRAY_SIZE(supply_names); i++)
+ cs4270->supplies[i].supply = supply_names[i];
+
+ ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(cs4270->supplies),
+ cs4270->supplies);
+ if (ret < 0)
+ return ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(cs4270->supplies),
+ cs4270->supplies);
+ if (ret < 0)
+ goto error_free_regulators;
return 0;
-error_free_codec:
- kfree(cs4270);
- cs4270_codec = NULL;
- cs4270_dai.dev = NULL;
+error_free_regulators:
+ regulator_bulk_free(ARRAY_SIZE(cs4270->supplies),
+ cs4270->supplies);
return ret;
}
/**
- * cs4270_i2c_remove - remove an I2C device
- * @i2c_client: the I2C client object
+ * cs4270_remove - ASoC remove function
+ * @pdev: platform device
*
- * This function is the counterpart to cs4270_i2c_probe().
+ * This function is the counterpart to cs4270_probe().
*/
-static int cs4270_i2c_remove(struct i2c_client *i2c_client)
+static int cs4270_remove(struct snd_soc_codec *codec)
{
- struct cs4270_private *cs4270 = i2c_get_clientdata(i2c_client);
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
- kfree(cs4270);
- cs4270_codec = NULL;
- cs4270_dai.dev = NULL;
+ regulator_bulk_disable(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
+ regulator_bulk_free(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
return 0;
-}
-
-/*
- * cs4270_id - I2C device IDs supported by this driver
- */
-static struct i2c_device_id cs4270_id[] = {
- {"cs4270", 0},
- {}
};
-MODULE_DEVICE_TABLE(i2c, cs4270_id);
#ifdef CONFIG_PM
* and all registers are written back to the hardware when resuming.
*/
-static int cs4270_soc_suspend(struct platform_device *pdev, pm_message_t mesg)
+static int cs4270_soc_suspend(struct snd_soc_codec *codec, pm_message_t mesg)
{
- struct snd_soc_codec *codec = cs4270_codec;
- struct cs4270_private *cs4270 = codec->private_data;
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
int reg, ret;
reg = snd_soc_read(codec, CS4270_PWRCTL) | CS4270_PWRCTL_PDN_ALL;
return 0;
}
-static int cs4270_soc_resume(struct platform_device *pdev)
+static int cs4270_soc_resume(struct snd_soc_codec *codec)
{
- struct snd_soc_codec *codec = cs4270_codec;
- struct cs4270_private *cs4270 = codec->private_data;
+ struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
struct i2c_client *i2c_client = codec->control_data;
int reg;
#define cs4270_soc_resume NULL
#endif /* CONFIG_PM */
+/*
+ * ASoC codec device structure
+ *
+ * Assign this variable to the codec_dev field of the machine driver's
+ * snd_soc_device structure.
+ */
+static struct snd_soc_codec_driver soc_codec_device_cs4270 = {
+ .probe = cs4270_probe,
+ .remove = cs4270_remove,
+ .suspend = cs4270_soc_suspend,
+ .resume = cs4270_soc_resume,
+ .read = cs4270_read_reg_cache,
+ .write = cs4270_i2c_write,
+ .reg_cache_size = CS4270_NUMREGS,
+ .reg_word_size = sizeof(u8),
+};
+
+/**
+ * cs4270_i2c_probe - initialize the I2C interface of the CS4270
+ * @i2c_client: the I2C client object
+ * @id: the I2C device ID (ignored)
+ *
+ * This function is called whenever the I2C subsystem finds a device that
+ * matches the device ID given via a prior call to i2c_add_driver().
+ */
+static int cs4270_i2c_probe(struct i2c_client *i2c_client,
+ const struct i2c_device_id *id)
+{
+ struct cs4270_private *cs4270;
+ int ret;
+
+ /* Verify that we have a CS4270 */
+
+ ret = i2c_smbus_read_byte_data(i2c_client, CS4270_CHIPID);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "failed to read i2c at addr %X\n",
+ i2c_client->addr);
+ return ret;
+ }
+ /* The top four bits of the chip ID should be 1100. */
+ if ((ret & 0xF0) != 0xC0) {
+ dev_err(&i2c_client->dev, "device at addr %X is not a CS4270\n",
+ i2c_client->addr);
+ return -ENODEV;
+ }
+
+ dev_info(&i2c_client->dev, "found device at i2c address %X\n",
+ i2c_client->addr);
+ dev_info(&i2c_client->dev, "hardware revision %X\n", ret & 0xF);
+
+ cs4270 = kzalloc(sizeof(struct cs4270_private), GFP_KERNEL);
+ if (!cs4270) {
+ dev_err(&i2c_client->dev, "could not allocate codec\n");
+ return -ENOMEM;
+ }
+
+ i2c_set_clientdata(i2c_client, cs4270);
+ cs4270->control_data = i2c_client;
+ cs4270->control_type = SND_SOC_I2C;
+
+ ret = snd_soc_register_codec(&i2c_client->dev,
+ &soc_codec_device_cs4270, &cs4270_dai, 1);
+ if (ret < 0)
+ kfree(cs4270);
+ return ret;
+}
+
+/**
+ * cs4270_i2c_remove - remove an I2C device
+ * @i2c_client: the I2C client object
+ *
+ * This function is the counterpart to cs4270_i2c_probe().
+ */
+static int cs4270_i2c_remove(struct i2c_client *i2c_client)
+{
+ snd_soc_unregister_codec(&i2c_client->dev);
+ kfree(i2c_get_clientdata(i2c_client));
+ return 0;
+}
+
+/*
+ * cs4270_id - I2C device IDs supported by this driver
+ */
+static struct i2c_device_id cs4270_id[] = {
+ {"cs4270", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, cs4270_id);
+
/*
* cs4270_i2c_driver - I2C device identification
*
*/
static struct i2c_driver cs4270_i2c_driver = {
.driver = {
- .name = "cs4270",
+ .name = "cs4270-codec",
.owner = THIS_MODULE,
},
.id_table = cs4270_id,
.remove = cs4270_i2c_remove,
};
-/*
- * ASoC codec device structure
- *
- * Assign this variable to the codec_dev field of the machine driver's
- * snd_soc_device structure.
- */
-struct snd_soc_codec_device soc_codec_device_cs4270 = {
- .probe = cs4270_probe,
- .remove = cs4270_remove,
- .suspend = cs4270_soc_suspend,
- .resume = cs4270_soc_resume,
-};
-EXPORT_SYMBOL_GPL(soc_codec_device_cs4270);
-
static int __init cs4270_init(void)
{
pr_info("Cirrus Logic CS4270 ALSA SoC Codec Driver\n");
projects / mv-sheeva.git / blobdiff