[alsa-devel] [PATCH 1/3] ASoC: cs4270: Conver to data based control init
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/cs4270.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c index 44a176f..c6e5a73 100644 --- a/sound/soc/codecs/cs4270.c +++ b/sound/soc/codecs/cs4270.c @@ -521,14 +521,6 @@ static int cs4270_probe(struct snd_soc_codec *codec) 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]; @@ -634,6 +626,9 @@ static const struct snd_soc_codec_driver soc_codec_device_cs4270 = { .remove = cs4270_remove, .suspend = cs4270_soc_suspend, .resume = cs4270_soc_resume, + + .controls = cs4270_snd_controls, + .num_controls = ARRAY_SIZE(cs4270_snd_controls), .volatile_register = cs4270_reg_is_volatile, .readable_register = cs4270_reg_is_readable, .reg_cache_size = CS4270_LASTREG + 1,
This is better style since it has us obtaining all resources before we try the ASoC probe. This change also fixes a potential issue where we don't enable the regulators before trying to confirm the device ID which could cause a failure during probe in some system configurations.
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/cs4270.c | 46 +++++++++++++++++++-------------------------- 1 file changed, 19 insertions(+), 27 deletions(-)
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c index c6e5a73..64c29b8 100644 --- a/sound/soc/codecs/cs4270.c +++ b/sound/soc/codecs/cs4270.c @@ -487,7 +487,7 @@ static struct snd_soc_dai_driver cs4270_dai = { 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. @@ -521,25 +521,8 @@ static int cs4270_probe(struct snd_soc_codec *codec) 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; } @@ -555,7 +538,6 @@ static int cs4270_remove(struct snd_soc_codec *codec) 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; }; @@ -658,7 +640,24 @@ static int cs4270_i2c_probe(struct i2c_client *i2c_client, { struct device_node *np = i2c_client->dev.of_node; struct cs4270_private *cs4270; - int ret; + 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) { @@ -694,13 +693,6 @@ static int cs4270_i2c_probe(struct i2c_client *i2c_client, 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; - } - i2c_set_clientdata(i2c_client, cs4270); cs4270->control_type = SND_SOC_I2C;
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/codecs/cs4270.c | 54 +++++++++++++++++++++++++++------------------ 1 file changed, 32 insertions(+), 22 deletions(-)
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c index 64c29b8..f276ab8 100644 --- a/sound/soc/codecs/cs4270.c +++ b/sound/soc/codecs/cs4270.c @@ -112,14 +112,15 @@ * 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[] = { @@ -128,7 +129,7 @@ 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; @@ -193,12 +194,12 @@ static struct cs4270_mode_ratios cs4270_mode_ratios[] = { /* 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)) @@ -492,7 +493,7 @@ static int cs4270_probe(struct snd_soc_codec *codec) /* 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; @@ -587,7 +588,7 @@ static int cs4270_soc_resume(struct snd_soc_codec *codec) 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); @@ -611,11 +612,6 @@ static const struct snd_soc_codec_driver soc_codec_device_cs4270 = {
.controls = cs4270_snd_controls, .num_controls = ARRAY_SIZE(cs4270_snd_controls), - .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, };
/* @@ -627,6 +623,17 @@ static const struct of_device_id cs4270_of_match[] = { }; 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), + + .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 @@ -640,6 +647,7 @@ static int cs4270_i2c_probe(struct i2c_client *i2c_client, { struct device_node *np = i2c_client->dev.of_node; struct cs4270_private *cs4270; + unsigned int val; int ret, i;
cs4270 = devm_kzalloc(&i2c_client->dev, sizeof(struct cs4270_private), @@ -674,16 +682,19 @@ static int cs4270_i2c_probe(struct i2c_client *i2c_client, } }
- /* 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; @@ -691,10 +702,9 @@ static int cs4270_i2c_probe(struct i2c_client *i2c_client,
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); + 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);
On Mon, Sep 10, 2012 at 12:58:45PM +0800, Mark Brown wrote:
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com
This also needs
.cache_type = REGCACHE_RBTREE
in the regmap config, I've fixed up locally.
Mark Brown wrote:
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com
All three patches:
Acked-by: Timur Tabi timur@freescale.com
participants (2)
-
Mark Brown -
Timur Tabi