[alsa-devel] [PATCH 01/10] ASoC: sta32x: Convert to direct regmap API usage.
Thomas Niederprüm
niederp at physik.uni-kl.de
Thu Jan 22 00:01:53 CET 2015
use the regmap API directly rather than relying on the snd_soc_read/write
functions as this seems to be in accordance with common practice.
Signed-off-by: Thomas Niederprüm <niederp at physik.uni-kl.de>
---
sound/soc/codecs/Kconfig | 1 +
sound/soc/codecs/sta32x.c | 271 ++++++++++++++++++++++++++--------------------
2 files changed, 152 insertions(+), 120 deletions(-)
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index a68d173..a2683a0 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -558,6 +558,7 @@ config SND_SOC_SSM4567
config SND_SOC_STA32X
tristate
+ select REGMAP_I2C
config SND_SOC_STA350
tristate "STA350 speaker amplifier"
diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c
index 4874085..03175fe 100644
--- a/sound/soc/codecs/sta32x.c
+++ b/sound/soc/codecs/sta32x.c
@@ -102,6 +102,35 @@ static const struct reg_default sta32x_regs[] = {
{ 0x2c, 0x0c },
};
+static const struct regmap_range sta32x_write_regs_range[] = {
+ regmap_reg_range(STA32X_CONFA, STA32X_AUTO2),
+ regmap_reg_range(STA32X_C1CFG, STA32X_FDRC2),
+};
+
+static const struct regmap_range sta32x_read_regs_range[] = {
+ regmap_reg_range(STA32X_CONFA, STA32X_AUTO2),
+ regmap_reg_range(STA32X_C1CFG, STA32X_FDRC2),
+};
+
+static const struct regmap_range sta32x_volatile_regs_range[] = {
+ regmap_reg_range(STA32X_CFADDR2, STA32X_CFUD),
+};
+
+static const struct regmap_access_table sta32x_write_regs = {
+ .yes_ranges = sta32x_write_regs_range,
+ .n_yes_ranges = ARRAY_SIZE(sta32x_write_regs_range),
+};
+
+static const struct regmap_access_table sta32x_read_regs = {
+ .yes_ranges = sta32x_read_regs_range,
+ .n_yes_ranges = ARRAY_SIZE(sta32x_read_regs_range),
+};
+
+static const struct regmap_access_table sta32x_volatile_regs = {
+ .yes_ranges = sta32x_volatile_regs_range,
+ .n_yes_ranges = ARRAY_SIZE(sta32x_volatile_regs_range),
+};
+
/* regulator power supply names */
static const char *sta32x_supply_names[] = {
"Vdda", /* analog supply, 3.3VV */
@@ -122,6 +151,7 @@ struct sta32x_priv {
u32 coef_shadow[STA32X_COEF_COUNT];
struct delayed_work watchdog_work;
int shutdown;
+ struct mutex coeff_lock;
};
static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1);
@@ -244,29 +274,42 @@ static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
int numcoef = kcontrol->private_value >> 16;
int index = kcontrol->private_value & 0xffff;
- unsigned int cfud;
- int i;
+ unsigned int cfud, val;
+ int i, ret = 0;
+
+ mutex_lock(&sta32x->coeff_lock);
/* preserve reserved bits in STA32X_CFUD */
- cfud = snd_soc_read(codec, STA32X_CFUD) & 0xf0;
- /* chip documentation does not say if the bits are self clearing,
- * so do it explicitly */
- snd_soc_write(codec, STA32X_CFUD, cfud);
+ regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
+ cfud &= 0xf0;
+ /*
+ * chip documentation does not say if the bits are self clearing,
+ * so do it explicitly
+ */
+ regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
- snd_soc_write(codec, STA32X_CFADDR2, index);
- if (numcoef == 1)
- snd_soc_write(codec, STA32X_CFUD, cfud | 0x04);
- else if (numcoef == 5)
- snd_soc_write(codec, STA32X_CFUD, cfud | 0x08);
- else
- return -EINVAL;
- for (i = 0; i < 3 * numcoef; i++)
- ucontrol->value.bytes.data[i] =
- snd_soc_read(codec, STA32X_B1CF1 + i);
+ regmap_write(sta32x->regmap, STA32X_CFADDR2, index);
+ if (numcoef == 1) {
+ regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x04);
+ } else if (numcoef == 5) {
+ regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x08);
+ } else {
+ ret = -EINVAL;
+ goto exit_unlock;
+ }
- return 0;
+ for (i = 0; i < 3 * numcoef; i++) {
+ regmap_read(sta32x->regmap, STA32X_B1CF1 + i, &val);
+ ucontrol->value.bytes.data[i] = val;
+ }
+
+exit_unlock:
+ mutex_unlock(&sta32x->coeff_lock);
+
+ return ret;
}
static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
@@ -280,24 +323,27 @@ static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
int i;
/* preserve reserved bits in STA32X_CFUD */
- cfud = snd_soc_read(codec, STA32X_CFUD) & 0xf0;
- /* chip documentation does not say if the bits are self clearing,
- * so do it explicitly */
- snd_soc_write(codec, STA32X_CFUD, cfud);
+ regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
+ cfud &= 0xf0;
+ /*
+ * chip documentation does not say if the bits are self clearing,
+ * so do it explicitly
+ */
+ regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
- snd_soc_write(codec, STA32X_CFADDR2, index);
+ regmap_write(sta32x->regmap, STA32X_CFADDR2, index);
for (i = 0; i < numcoef && (index + i < STA32X_COEF_COUNT); i++)
sta32x->coef_shadow[index + i] =
(ucontrol->value.bytes.data[3 * i] << 16)
| (ucontrol->value.bytes.data[3 * i + 1] << 8)
| (ucontrol->value.bytes.data[3 * i + 2]);
for (i = 0; i < 3 * numcoef; i++)
- snd_soc_write(codec, STA32X_B1CF1 + i,
- ucontrol->value.bytes.data[i]);
+ regmap_write(sta32x->regmap, STA32X_B1CF1 + i,
+ ucontrol->value.bytes.data[i]);
if (numcoef == 1)
- snd_soc_write(codec, STA32X_CFUD, cfud | 0x01);
+ regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01);
else if (numcoef == 5)
- snd_soc_write(codec, STA32X_CFUD, cfud | 0x02);
+ regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x02);
else
return -EINVAL;
@@ -311,20 +357,23 @@ static int sta32x_sync_coef_shadow(struct snd_soc_codec *codec)
int i;
/* preserve reserved bits in STA32X_CFUD */
- cfud = snd_soc_read(codec, STA32X_CFUD) & 0xf0;
+ regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
+ cfud &= 0xf0;
for (i = 0; i < STA32X_COEF_COUNT; i++) {
- snd_soc_write(codec, STA32X_CFADDR2, i);
- snd_soc_write(codec, STA32X_B1CF1,
- (sta32x->coef_shadow[i] >> 16) & 0xff);
- snd_soc_write(codec, STA32X_B1CF2,
- (sta32x->coef_shadow[i] >> 8) & 0xff);
- snd_soc_write(codec, STA32X_B1CF3,
- (sta32x->coef_shadow[i]) & 0xff);
- /* chip documentation does not say if the bits are
- * self-clearing, so do it explicitly */
- snd_soc_write(codec, STA32X_CFUD, cfud);
- snd_soc_write(codec, STA32X_CFUD, cfud | 0x01);
+ regmap_write(sta32x->regmap, STA32X_CFADDR2, i);
+ regmap_write(sta32x->regmap, STA32X_B1CF1,
+ (sta32x->coef_shadow[i] >> 16) & 0xff);
+ regmap_write(sta32x->regmap, STA32X_B1CF2,
+ (sta32x->coef_shadow[i] >> 8) & 0xff);
+ regmap_write(sta32x->regmap, STA32X_B1CF3,
+ (sta32x->coef_shadow[i]) & 0xff);
+ /*
+ * chip documentation does not say if the bits are
+ * self-clearing, so do it explicitly
+ */
+ regmap_write(sta32x->regmap, STA32X_CFUD, cfud);
+ regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x01);
}
return 0;
}
@@ -336,11 +385,11 @@ static int sta32x_cache_sync(struct snd_soc_codec *codec)
int rc;
/* mute during register sync */
- mute = snd_soc_read(codec, STA32X_MMUTE);
- snd_soc_write(codec, STA32X_MMUTE, mute | STA32X_MMUTE_MMUTE);
+ regmap_read(sta32x->regmap, STA32X_MMUTE, &mute);
+ regmap_write(sta32x->regmap, STA32X_MMUTE, mute | STA32X_MMUTE_MMUTE);
sta32x_sync_coef_shadow(codec);
rc = regcache_sync(sta32x->regmap);
- snd_soc_write(codec, STA32X_MMUTE, mute);
+ regmap_write(sta32x->regmap, STA32X_MMUTE, mute);
return rc;
}
@@ -599,10 +648,7 @@ static int sta32x_set_dai_fmt(struct snd_soc_dai *codec_dai,
{
struct snd_soc_codec *codec = codec_dai->codec;
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
- u8 confb = snd_soc_read(codec, STA32X_CONFB);
-
- pr_debug("\n");
- confb &= ~(STA32X_CONFB_C1IM | STA32X_CONFB_C2IM);
+ u8 confb = 0;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
@@ -632,8 +678,8 @@ static int sta32x_set_dai_fmt(struct snd_soc_dai *codec_dai,
return -EINVAL;
}
- snd_soc_write(codec, STA32X_CONFB, confb);
- return 0;
+ return regmap_update_bits(sta32x->regmap, STA32X_CONFB,
+ STA32X_CONFB_C1IM | STA32X_CONFB_C2IM, confb);
}
/**
@@ -653,7 +699,7 @@ static int sta32x_hw_params(struct snd_pcm_substream *substream,
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
unsigned int rate;
int i, mcs = -1, ir = -1;
- u8 confa, confb;
+ unsigned int confa, confb;
rate = params_rate(params);
pr_debug("rate: %u\n", rate);
@@ -672,12 +718,10 @@ static int sta32x_hw_params(struct snd_pcm_substream *substream,
if (mcs < 0)
return -EINVAL;
- confa = snd_soc_read(codec, STA32X_CONFA);
- confa &= ~(STA32X_CONFA_MCS_MASK | STA32X_CONFA_IR_MASK);
- confa |= (ir << STA32X_CONFA_IR_SHIFT) | (mcs << STA32X_CONFA_MCS_SHIFT);
+ confa = (ir << STA32X_CONFA_IR_SHIFT) |
+ (mcs << STA32X_CONFA_MCS_SHIFT);
+ confb = 0;
- confb = snd_soc_read(codec, STA32X_CONFB);
- confb &= ~(STA32X_CONFB_SAI_MASK | STA32X_CONFB_SAIFB);
switch (params_width(params)) {
case 24:
pr_debug("24bit\n");
@@ -746,8 +790,20 @@ static int sta32x_hw_params(struct snd_pcm_substream *substream,
return -EINVAL;
}
- snd_soc_write(codec, STA32X_CONFA, confa);
- snd_soc_write(codec, STA32X_CONFB, confb);
+ ret = regmap_update_bits(sta32x->regmap, STA32X_CONFA,
+ STA32X_CONFA_MCS_MASK | STA32X_CONFA_IR_MASK,
+ confa);
+ if (ret < 0)
+ return ret;
+
+ ret = regmap_update_bits(sta32x->regmap, STA32X_CONFB,
+ STA32X_CONFB_SAI_MASK | STA32X_CONFB_SAIFB,
+ confb);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
return 0;
}
@@ -773,7 +829,7 @@ static int sta32x_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_PREPARE:
/* Full power on */
- snd_soc_update_bits(codec, STA32X_CONFF,
+ regmap_update_bits(sta32x->regmap, STA32X_CONFF,
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
STA32X_CONFF_PWDN | STA32X_CONFF_EAPD);
break;
@@ -792,19 +848,17 @@ static int sta32x_set_bias_level(struct snd_soc_codec *codec,
sta32x_watchdog_start(sta32x);
}
- /* Power up to mute */
- /* FIXME */
- snd_soc_update_bits(codec, STA32X_CONFF,
- STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
- STA32X_CONFF_PWDN | STA32X_CONFF_EAPD);
+ /* Power down */
+ regmap_update_bits(sta32x->regmap, STA32X_CONFF,
+ STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
+ 0);
break;
case SND_SOC_BIAS_OFF:
/* The chip runs through the power down sequence for us. */
- snd_soc_update_bits(codec, STA32X_CONFF,
- STA32X_CONFF_PWDN | STA32X_CONFF_EAPD,
- STA32X_CONFF_PWDN);
+ regmap_update_bits(sta32x->regmap, STA32X_CONFF,
+ STA32X_CONFF_PWDN | STA32X_CONFF_EAPD, 0);
msleep(300);
sta32x_watchdog_stop(sta32x);
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies),
@@ -853,11 +907,8 @@ static int sta32x_resume(struct snd_soc_codec *codec)
static int sta32x_probe(struct snd_soc_codec *codec)
{
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
+ struct sta32x_platform_data *pdata = sta32x->pdata;
int i, ret = 0, thermal = 0;
-
- sta32x->codec = codec;
- sta32x->pdata = dev_get_platdata(codec->dev);
-
ret = regulator_bulk_enable(ARRAY_SIZE(sta32x->supplies),
sta32x->supplies);
if (ret != 0) {
@@ -865,50 +916,34 @@ static int sta32x_probe(struct snd_soc_codec *codec)
return ret;
}
- /* Chip documentation explicitly requires that the reset values
- * of reserved register bits are left untouched.
- * Write the register default value to cache for reserved registers,
- * so the write to the these registers are suppressed by the cache
- * restore code when it skips writes of default registers.
- */
- regcache_cache_only(sta32x->regmap, true);
- snd_soc_write(codec, STA32X_CONFC, 0xc2);
- snd_soc_write(codec, STA32X_CONFE, 0xc2);
- snd_soc_write(codec, STA32X_CONFF, 0x5c);
- snd_soc_write(codec, STA32X_MMUTE, 0x10);
- snd_soc_write(codec, STA32X_AUTO1, 0x60);
- snd_soc_write(codec, STA32X_AUTO3, 0x00);
- snd_soc_write(codec, STA32X_C3CFG, 0x40);
- regcache_cache_only(sta32x->regmap, false);
-
/* set thermal warning adjustment and recovery */
- if (!(sta32x->pdata->thermal_conf & STA32X_THERMAL_ADJUSTMENT_ENABLE))
+ if (!pdata->thermal_warning_recovery)
thermal |= STA32X_CONFA_TWAB;
- if (!(sta32x->pdata->thermal_conf & STA32X_THERMAL_RECOVERY_ENABLE))
+ if (!pdata->thermal_warning_adjustment)
thermal |= STA32X_CONFA_TWRB;
- snd_soc_update_bits(codec, STA32X_CONFA,
- STA32X_CONFA_TWAB | STA32X_CONFA_TWRB,
- thermal);
+ regmap_update_bits(sta32x->regmap, STA32X_CONFA,
+ STA32X_CONFA_TWAB | STA32X_CONFA_TWRB,
+ thermal);
/* select output configuration */
- snd_soc_update_bits(codec, STA32X_CONFF,
- STA32X_CONFF_OCFG_MASK,
- sta32x->pdata->output_conf
- << STA32X_CONFF_OCFG_SHIFT);
+ regmap_update_bits(sta32x->regmap, STA32X_CONFF,
+ STA32X_CONFF_OCFG_MASK,
+ pdata->output_conf
+ << STA32X_CONFF_OCFG_SHIFT);
/* channel to output mapping */
- snd_soc_update_bits(codec, STA32X_C1CFG,
- STA32X_CxCFG_OM_MASK,
- sta32x->pdata->ch1_output_mapping
- << STA32X_CxCFG_OM_SHIFT);
- snd_soc_update_bits(codec, STA32X_C2CFG,
- STA32X_CxCFG_OM_MASK,
- sta32x->pdata->ch2_output_mapping
- << STA32X_CxCFG_OM_SHIFT);
- snd_soc_update_bits(codec, STA32X_C3CFG,
- STA32X_CxCFG_OM_MASK,
- sta32x->pdata->ch3_output_mapping
- << STA32X_CxCFG_OM_SHIFT);
+ regmap_update_bits(sta32x->regmap, STA32X_C1CFG,
+ STA32X_CxCFG_OM_MASK,
+ pdata->ch1_output_mapping
+ << STA32X_CxCFG_OM_SHIFT);
+ regmap_update_bits(sta32x->regmap, STA32X_C2CFG,
+ STA32X_CxCFG_OM_MASK,
+ pdata->ch2_output_mapping
+ << STA32X_CxCFG_OM_SHIFT);
+ regmap_update_bits(sta32x->regmap, STA32X_C3CFG,
+ STA32X_CxCFG_OM_MASK,
+ pdata->ch3_output_mapping
+ << STA32X_CxCFG_OM_SHIFT);
/* initialize coefficient shadow RAM with reset values */
for (i = 4; i <= 49; i += 5)
@@ -942,16 +977,6 @@ static int sta32x_remove(struct snd_soc_codec *codec)
return 0;
}
-static bool sta32x_reg_is_volatile(struct device *dev, unsigned int reg)
-{
- switch (reg) {
- case STA32X_CONFA ... STA32X_L2ATRT:
- case STA32X_MPCC1 ... STA32X_FDRC2:
- return 0;
- }
- return 1;
-}
-
static const struct snd_soc_codec_driver sta32x_codec = {
.probe = sta32x_probe,
.remove = sta32x_remove,
@@ -973,12 +998,16 @@ static const struct regmap_config sta32x_regmap = {
.reg_defaults = sta32x_regs,
.num_reg_defaults = ARRAY_SIZE(sta32x_regs),
.cache_type = REGCACHE_RBTREE,
- .volatile_reg = sta32x_reg_is_volatile,
+ .wr_table = &sta32x_write_regs,
+ .rd_table = &sta32x_read_regs,
+ .volatile_table = &sta32x_volatile_regs,
+};
};
static int sta32x_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
+ struct device *dev = &i2c->dev;
struct sta32x_priv *sta32x;
int ret, i;
@@ -987,6 +1016,8 @@ static int sta32x_i2c_probe(struct i2c_client *i2c,
if (!sta32x)
return -ENOMEM;
+ mutex_init(&sta32x->coeff_lock);
+ sta32x->pdata = dev_get_platdata(dev);
/* regulators */
for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++)
sta32x->supplies[i].supply = sta32x_supply_names[i];
@@ -1001,15 +1032,15 @@ static int sta32x_i2c_probe(struct i2c_client *i2c,
sta32x->regmap = devm_regmap_init_i2c(i2c, &sta32x_regmap);
if (IS_ERR(sta32x->regmap)) {
ret = PTR_ERR(sta32x->regmap);
- dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
+ dev_err(dev, "Failed to init regmap: %d\n", ret);
return ret;
}
i2c_set_clientdata(i2c, sta32x);
- ret = snd_soc_register_codec(&i2c->dev, &sta32x_codec, &sta32x_dai, 1);
- if (ret != 0)
- dev_err(&i2c->dev, "Failed to register codec (%d)\n", ret);
+ ret = snd_soc_register_codec(dev, &sta32x_codec, &sta32x_dai, 1);
+ if (ret < 0)
+ dev_err(dev, "Failed to register codec (%d)\n", ret);
return ret;
}
--
2.1.1
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