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Diffstat (limited to 'sound/soc/codecs/sgtl5000.c')
-rw-r--r--sound/soc/codecs/sgtl5000.c76
1 files changed, 24 insertions, 52 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index 1f4093f3f3a1..0fcbe90f3ef2 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -115,6 +115,7 @@ struct sgtl5000_priv {
struct ldo_regulator *ldo;
struct regmap *regmap;
struct clk *mclk;
+ int revision;
};
/*
@@ -1285,41 +1286,45 @@ static int sgtl5000_replace_vddd_with_ldo(struct snd_soc_codec *codec)
sgtl5000->supplies[VDDD].supply = LDO_CONSUMER_NAME;
- ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sgtl5000->supplies),
- sgtl5000->supplies);
-
- if (ret) {
- ldo_regulator_remove(codec);
- dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
- return ret;
- }
-
dev_info(codec->dev, "Using internal LDO instead of VDDD\n");
return 0;
}
static int sgtl5000_enable_regulators(struct snd_soc_codec *codec)
{
- int reg;
int ret;
- int rev;
int i;
int external_vddd = 0;
struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec);
+ struct regulator *vddd;
for (i = 0; i < ARRAY_SIZE(sgtl5000->supplies); i++)
sgtl5000->supplies[i].supply = supply_names[i];
- ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sgtl5000->supplies),
- sgtl5000->supplies);
- if (!ret)
- external_vddd = 1;
- else {
+ /* External VDDD only works before revision 0x11 */
+ if (sgtl5000->revision < 0x11) {
+ vddd = regulator_get_optional(codec->dev, "VDDD");
+ if (IS_ERR(vddd)) {
+ /* See if it's just not registered yet */
+ if (PTR_ERR(vddd) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ } else {
+ external_vddd = 1;
+ regulator_put(vddd);
+ }
+ }
+
+ if (!external_vddd) {
ret = sgtl5000_replace_vddd_with_ldo(codec);
if (ret)
return ret;
}
+ ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(sgtl5000->supplies),
+ sgtl5000->supplies);
+ if (ret)
+ goto err_ldo_remove;
+
ret = regulator_bulk_enable(ARRAY_SIZE(sgtl5000->supplies),
sgtl5000->supplies);
if (ret)
@@ -1328,47 +1333,13 @@ static int sgtl5000_enable_regulators(struct snd_soc_codec *codec)
/* wait for all power rails bring up */
udelay(10);
- /*
- * workaround for revision 0x11 and later,
- * roll back to use internal LDO
- */
-
- ret = regmap_read(sgtl5000->regmap, SGTL5000_CHIP_ID, &reg);
- if (ret)
- goto err_regulator_disable;
-
- rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT;
-
- if (external_vddd && rev >= 0x11) {
- /* disable all regulator first */
- regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
- sgtl5000->supplies);
- /* free VDDD regulator */
- regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
- sgtl5000->supplies);
-
- ret = sgtl5000_replace_vddd_with_ldo(codec);
- if (ret)
- return ret;
-
- ret = regulator_bulk_enable(ARRAY_SIZE(sgtl5000->supplies),
- sgtl5000->supplies);
- if (ret)
- goto err_regulator_free;
-
- /* wait for all power rails bring up */
- udelay(10);
- }
-
return 0;
-err_regulator_disable:
- regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies),
- sgtl5000->supplies);
err_regulator_free:
regulator_bulk_free(ARRAY_SIZE(sgtl5000->supplies),
sgtl5000->supplies);
- if (external_vddd)
+err_ldo_remove:
+ if (!external_vddd)
ldo_regulator_remove(codec);
return ret;
@@ -1566,6 +1537,7 @@ static int sgtl5000_i2c_probe(struct i2c_client *client,
rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT;
dev_info(&client->dev, "sgtl5000 revision 0x%x\n", rev);
+ sgtl5000->revision = rev;
i2c_set_clientdata(client, sgtl5000);
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