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Diffstat (limited to 'sound/soc/codecs/sta32x.c')
-rw-r--r--sound/soc/codecs/sta32x.c117
1 files changed, 84 insertions, 33 deletions
diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c
index fbd7eb9e61ce..d2f37152f940 100644
--- a/sound/soc/codecs/sta32x.c
+++ b/sound/soc/codecs/sta32x.c
@@ -76,6 +76,8 @@ struct sta32x_priv {
unsigned int mclk;
unsigned int format;
+
+ u32 coef_shadow[STA32X_COEF_COUNT];
};
static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1);
@@ -227,6 +229,7 @@ static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(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;
@@ -239,6 +242,11 @@ static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
snd_soc_write(codec, STA32X_CFUD, cfud);
snd_soc_write(codec, 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]);
@@ -252,6 +260,48 @@ static int sta32x_coefficient_put(struct snd_kcontrol *kcontrol,
return 0;
}
+int sta32x_sync_coef_shadow(struct snd_soc_codec *codec)
+{
+ struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
+ unsigned int cfud;
+ int i;
+
+ /* preserve reserved bits in STA32X_CFUD */
+ cfud = snd_soc_read(codec, STA32X_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);
+ }
+ return 0;
+}
+
+int sta32x_cache_sync(struct snd_soc_codec *codec)
+{
+ unsigned int mute;
+ int rc;
+
+ if (!codec->cache_sync)
+ return 0;
+
+ /* mute during register sync */
+ mute = snd_soc_read(codec, STA32X_MMUTE);
+ snd_soc_write(codec, STA32X_MMUTE, mute | STA32X_MMUTE_MMUTE);
+ sta32x_sync_coef_shadow(codec);
+ rc = snd_soc_cache_sync(codec);
+ snd_soc_write(codec, STA32X_MMUTE, mute);
+ return rc;
+}
+
#define SINGLE_COEF(xname, index) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = sta32x_coefficient_info, \
@@ -524,13 +574,17 @@ static int sta32x_hw_params(struct snd_pcm_substream *substream,
rate = params_rate(params);
pr_debug("rate: %u\n", rate);
for (i = 0; i < ARRAY_SIZE(interpolation_ratios); i++)
- if (interpolation_ratios[i].fs == rate)
+ if (interpolation_ratios[i].fs == rate) {
ir = interpolation_ratios[i].ir;
+ break;
+ }
if (ir < 0)
return -EINVAL;
for (i = 0; mclk_ratios[ir][i].ratio; i++)
- if (mclk_ratios[ir][i].ratio * rate == sta32x->mclk)
+ if (mclk_ratios[ir][i].ratio * rate == sta32x->mclk) {
mcs = mclk_ratios[ir][i].mcs;
+ break;
+ }
if (mcs < 0)
return -EINVAL;
@@ -657,7 +711,7 @@ static int sta32x_set_bias_level(struct snd_soc_codec *codec,
return ret;
}
- snd_soc_cache_sync(codec);
+ sta32x_cache_sync(codec);
}
/* Power up to mute */
@@ -752,25 +806,19 @@ static int sta32x_probe(struct snd_soc_codec *codec)
return ret;
}
- /* read reg reset values into cache */
- for (i = 0; i < STA32X_REGISTER_COUNT; i++)
- snd_soc_cache_write(codec, i, sta32x_regs[i]);
-
- /* preserve reset values of reserved register bits */
- snd_soc_cache_write(codec, STA32X_CONFC,
- codec->hw_read(codec, STA32X_CONFC));
- snd_soc_cache_write(codec, STA32X_CONFE,
- codec->hw_read(codec, STA32X_CONFE));
- snd_soc_cache_write(codec, STA32X_CONFF,
- codec->hw_read(codec, STA32X_CONFF));
- snd_soc_cache_write(codec, STA32X_MMUTE,
- codec->hw_read(codec, STA32X_MMUTE));
- snd_soc_cache_write(codec, STA32X_AUTO1,
- codec->hw_read(codec, STA32X_AUTO1));
- snd_soc_cache_write(codec, STA32X_AUTO3,
- codec->hw_read(codec, STA32X_AUTO3));
- snd_soc_cache_write(codec, STA32X_C3CFG,
- codec->hw_read(codec, STA32X_C3CFG));
+ /* 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.
+ */
+ snd_soc_cache_write(codec, STA32X_CONFC, 0xc2);
+ snd_soc_cache_write(codec, STA32X_CONFE, 0xc2);
+ snd_soc_cache_write(codec, STA32X_CONFF, 0x5c);
+ snd_soc_cache_write(codec, STA32X_MMUTE, 0x10);
+ snd_soc_cache_write(codec, STA32X_AUTO1, 0x60);
+ snd_soc_cache_write(codec, STA32X_AUTO3, 0x00);
+ snd_soc_cache_write(codec, STA32X_C3CFG, 0x40);
/* FIXME enable thermal warning adjustment and recovery */
snd_soc_update_bits(codec, STA32X_CONFA,
@@ -792,6 +840,17 @@ static int sta32x_probe(struct snd_soc_codec *codec)
STA32X_CxCFG_OM_MASK,
2 << STA32X_CxCFG_OM_SHIFT);
+ /* initialize coefficient shadow RAM with reset values */
+ for (i = 4; i <= 49; i += 5)
+ sta32x->coef_shadow[i] = 0x400000;
+ for (i = 50; i <= 54; i++)
+ sta32x->coef_shadow[i] = 0x7fffff;
+ sta32x->coef_shadow[55] = 0x5a9df7;
+ sta32x->coef_shadow[56] = 0x7fffff;
+ sta32x->coef_shadow[59] = 0x7fffff;
+ sta32x->coef_shadow[60] = 0x400000;
+ sta32x->coef_shadow[61] = 0x400000;
+
sta32x_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Bias level configuration will have done an extra enable */
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
@@ -808,6 +867,7 @@ static int sta32x_remove(struct snd_soc_codec *codec)
{
struct sta32x_priv *sta32x = snd_soc_codec_get_drvdata(codec);
+ sta32x_set_bias_level(codec, SND_SOC_BIAS_OFF);
regulator_bulk_disable(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
regulator_bulk_free(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
@@ -832,6 +892,7 @@ static const struct snd_soc_codec_driver sta32x_codec = {
.resume = sta32x_resume,
.reg_cache_size = STA32X_REGISTER_COUNT,
.reg_word_size = sizeof(u8),
+ .reg_cache_default = sta32x_regs,
.volatile_register = sta32x_reg_is_volatile,
.set_bias_level = sta32x_set_bias_level,
.controls = sta32x_snd_controls,
@@ -867,18 +928,8 @@ static __devinit int sta32x_i2c_probe(struct i2c_client *i2c,
static __devexit int sta32x_i2c_remove(struct i2c_client *client)
{
struct sta32x_priv *sta32x = i2c_get_clientdata(client);
- struct snd_soc_codec *codec = sta32x->codec;
-
- if (codec)
- sta32x_set_bias_level(codec, SND_SOC_BIAS_OFF);
-
- regulator_bulk_free(ARRAY_SIZE(sta32x->supplies), sta32x->supplies);
-
- if (codec) {
- snd_soc_unregister_codec(&client->dev);
- snd_soc_codec_set_drvdata(codec, NULL);
- }
+ snd_soc_unregister_codec(&client->dev);
kfree(sta32x);
return 0;
}
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-24 06:05:25 +0000