diff options
| author | Shawn Guo | 2013-12-13 07:43:02 +0100 |
|---|---|---|
| committer | Mark Brown | 2013-12-16 21:14:44 +0100 |
| commit | 252e91ff1094eefacd25b401c3b77e549803cae6 (patch) | |
| tree | 72d95f842cc3faa1681f50e3c20506e4f2b5d789 /sound/soc/codecs/sgtl5000.c | |
| parent | Linux 3.13-rc1 (diff) | |
| download | kernel-qcow2-linux-252e91ff1094eefacd25b401c3b77e549803cae6.tar.gz kernel-qcow2-linux-252e91ff1094eefacd25b401c3b77e549803cae6.tar.xz kernel-qcow2-linux-252e91ff1094eefacd25b401c3b77e549803cae6.zip | |
ASoC: sgtl5000: read chip revision for once
Store chip revision in struct sgtl5000_priv when sgtl5000_i2c_probe()
reads it out from register, so that we can use it in
sgtl5000_enable_regulators() with no need to read register again.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/codecs/sgtl5000.c')
| -rw-r--r-- | sound/soc/codecs/sgtl5000.c | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index 1f4093f3f3a1..bd291d2b327d 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; }; /* @@ -1300,9 +1301,7 @@ static int sgtl5000_replace_vddd_with_ldo(struct snd_soc_codec *codec) 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); @@ -1332,14 +1331,7 @@ static int sgtl5000_enable_regulators(struct snd_soc_codec *codec) * workaround for revision 0x11 and later, * roll back to use internal LDO */ - - ret = regmap_read(sgtl5000->regmap, SGTL5000_CHIP_ID, ®); - if (ret) - goto err_regulator_disable; - - rev = (reg & SGTL5000_REVID_MASK) >> SGTL5000_REVID_SHIFT; - - if (external_vddd && rev >= 0x11) { + if (external_vddd && sgtl5000->revision >= 0x11) { /* disable all regulator first */ regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies), sgtl5000->supplies); @@ -1362,9 +1354,6 @@ static int sgtl5000_enable_regulators(struct snd_soc_codec *codec) 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); @@ -1566,6 +1555,7 @@ 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); |