* This array contains the power-on default values of the registers, with the
* exception of the "CHIPID" register (01h). The lower four bits of that
* register contain the hardware revision, so it is treated as volatile.
- *
- * Also note that on the CS4270, the first readable register is 1, but ASoC
- * assumes the first register is 0. Therfore, the array must have an entry for
- * register 0, but we use cs4270_reg_is_readable() to tell ASoC that it can't
- * be read.
*/
-static const u8 cs4270_default_reg_cache[CS4270_LASTREG + 1] = {
- 0x00, 0x00, 0x00, 0x30, 0x00, 0x60, 0x20, 0x00, 0x00
+static const struct reg_default cs4270_reg_defaults[] = {
+ { 2, 0x00 },
+ { 3, 0x30 },
+ { 4, 0x00 },
+ { 5, 0x60 },
+ { 6, 0x20 },
+ { 7, 0x00 },
+ { 8, 0x00 },
};
static const char *supply_names[] = {
/* Private data for the CS4270 */
struct cs4270_private {
- enum snd_soc_control_type control_type;
+ struct regmap *regmap;
unsigned int mclk; /* Input frequency of the MCLK pin */
unsigned int mode; /* The mode (I2S or left-justified) */
unsigned int slave_mode;
/* The number of MCLK/LRCK ratios supported by the CS4270 */
#define NUM_MCLK_RATIOS ARRAY_SIZE(cs4270_mode_ratios)
-static int cs4270_reg_is_readable(struct snd_soc_codec *codec, unsigned int reg)
+static bool cs4270_reg_is_readable(struct device *dev, unsigned int reg)
{
return (reg >= CS4270_FIRSTREG) && (reg <= CS4270_LASTREG);
}
-static int cs4270_reg_is_volatile(struct snd_soc_codec *codec, unsigned int reg)
+static bool cs4270_reg_is_volatile(struct device *dev, unsigned int reg)
{
/* Unreadable registers are considered volatile */
if ((reg < CS4270_FIRSTREG) || (reg > CS4270_LASTREG))
.name = "cs4270-hifi",
.playback = {
.stream_name = "Playback",
- .channels_min = 1,
+ .channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 4000,
},
.capture = {
.stream_name = "Capture",
- .channels_min = 1,
+ .channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_CONTINUOUS,
.rate_min = 4000,
static int cs4270_probe(struct snd_soc_codec *codec)
{
struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
- int i, ret;
+ int ret;
/* Tell ASoC what kind of I/O to use to read the registers. ASoC will
* then do the I2C transactions itself.
*/
- ret = snd_soc_codec_set_cache_io(codec, 8, 8, cs4270->control_type);
+ ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_REGMAP);
if (ret < 0) {
dev_err(codec->dev, "failed to set cache I/O (ret=%i)\n", ret);
return ret;
return ret;
}
- /* Add the non-DAPM controls */
- ret = snd_soc_add_codec_controls(codec, cs4270_snd_controls,
- ARRAY_SIZE(cs4270_snd_controls));
- if (ret < 0) {
- dev_err(codec->dev, "failed to add controls\n");
- return ret;
- }
-
- /* 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_regulators:
- regulator_bulk_free(ARRAY_SIZE(cs4270->supplies),
- cs4270->supplies);
return ret;
}
struct cs4270_private *cs4270 = snd_soc_codec_get_drvdata(codec);
regulator_bulk_disable(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
- regulator_bulk_free(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
return 0;
};
ndelay(500);
/* first restore the entire register cache ... */
- snd_soc_cache_sync(codec);
+ regcache_sync(cs4270->regmap);
/* ... then disable the power-down bits */
reg = snd_soc_read(codec, CS4270_PWRCTL);
.remove = cs4270_remove,
.suspend = cs4270_soc_suspend,
.resume = cs4270_soc_resume,
- .volatile_register = cs4270_reg_is_volatile,
- .readable_register = cs4270_reg_is_readable,
- .reg_cache_size = CS4270_LASTREG + 1,
- .reg_word_size = sizeof(u8),
- .reg_cache_default = cs4270_default_reg_cache,
+
+ .controls = cs4270_snd_controls,
+ .num_controls = ARRAY_SIZE(cs4270_snd_controls),
};
/*
};
MODULE_DEVICE_TABLE(of, cs4270_of_match);
+static const struct regmap_config cs4270_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = CS4270_LASTREG,
+ .reg_defaults = cs4270_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(cs4270_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+
+ .readable_reg = cs4270_reg_is_readable,
+ .volatile_reg = cs4270_reg_is_volatile,
+};
+
/**
* cs4270_i2c_probe - initialize the I2C interface of the CS4270
* @i2c_client: the I2C client object
{
struct device_node *np = i2c_client->dev.of_node;
struct cs4270_private *cs4270;
- int ret;
+ unsigned int val;
+ int ret, i;
+
+ cs4270 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs4270_private),
+ GFP_KERNEL);
+ if (!cs4270) {
+ dev_err(&i2c_client->dev, "could not allocate codec\n");
+ return -ENOMEM;
+ }
+
+ /* get the power supply regulators */
+ for (i = 0; i < ARRAY_SIZE(supply_names); i++)
+ cs4270->supplies[i].supply = supply_names[i];
+
+ ret = devm_regulator_bulk_get(&i2c_client->dev,
+ ARRAY_SIZE(cs4270->supplies),
+ cs4270->supplies);
+ if (ret < 0)
+ return ret;
/* See if we have a way to bring the codec out of reset */
if (np) {
}
}
- /* Verify that we have a CS4270 */
+ cs4270->regmap = devm_regmap_init_i2c(i2c_client, &cs4270_regmap);
+ if (IS_ERR(cs4270->regmap))
+ return PTR_ERR(cs4270->regmap);
- ret = i2c_smbus_read_byte_data(i2c_client, CS4270_CHIPID);
+ /* Verify that we have a CS4270 */
+ ret = regmap_read(cs4270->regmap, CS4270_CHIPID, &val);
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) {
+ if ((val & 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 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs4270_private),
- GFP_KERNEL);
- if (!cs4270) {
- dev_err(&i2c_client->dev, "could not allocate codec\n");
- return -ENOMEM;
- }
+ dev_info(&i2c_client->dev, "hardware revision %X\n", val & 0xF);
i2c_set_clientdata(i2c_client, cs4270);
- cs4270->control_type = SND_SOC_I2C;
ret = snd_soc_register_codec(&i2c_client->dev,
&soc_codec_device_cs4270, &cs4270_dai, 1);
projects / karo-tx-linux.git / blobdiff