From: Ben Zhang <benzh@chromium.org>
To: Mark Brown <broonie@kernel.org>
Cc: alsa-devel@alsa-project.org, Liam Girdwood <lgirdwood@gmail.com>,
Bard Liao <bardliao@realtek.com>,
Oder Chiou <oder_chiou@realtek.com>,
Anatol Pomozov <anatol@google.com>,
Dylan Reid <dgreid@chromium.org>,
Albert Chen <albertchen@realtek.com>,
linux-kernel@vger.kernel.org, Ben Zhang <benzh@chromium.org>
Subject: [PATCH 3/3] ASoC: rt5677: add a platform config option for DACREF source
Date: Wed, 10 Dec 2014 20:15:27 -0800 [thread overview]
Message-ID: <1418271327-14710-3-git-send-email-benzh@chromium.org> (raw)
In-Reply-To: <1418271327-14710-1-git-send-email-benzh@chromium.org>
DACREF power source can come from external 1.8V or codec internal 1.8V.
This patch adds the option to enable the internal DACREF power source.
Signed-off-by: Ben Zhang <benzh@chromium.org>
---
Documentation/devicetree/bindings/sound/rt5677.txt | 3 +++
include/sound/rt5677.h | 2 ++
sound/soc/codecs/rt5677.c | 9 +++++++++
3 files changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/rt5677.txt b/Documentation/devicetree/bindings/sound/rt5677.txt
index f54d0dd..f06d52a 100644
--- a/Documentation/devicetree/bindings/sound/rt5677.txt
+++ b/Documentation/devicetree/bindings/sound/rt5677.txt
@@ -22,6 +22,9 @@ Optional properties:
- realtek,micbias1
Select 0/1/2/3 to set MICBIAS1 voltage to 1.476V/2.970V/1.242V/2.475V
+- realtek,internal-dacref-en
+ Select codec internal 1.8V as DACREF source optionally.
+
- realtek,in1-differential
- realtek,in2-differential
- realtek,lout1-differential
diff --git a/include/sound/rt5677.h b/include/sound/rt5677.h
index efa74bb..42866f3 100644
--- a/include/sound/rt5677.h
+++ b/include/sound/rt5677.h
@@ -28,6 +28,8 @@ enum rt5677_dmic2_clk {
struct rt5677_platform_data {
/* MICBIAS output voltage control */
enum rt5677_micbias micbias1;
+ /* Select codec internal 1.8V as DACREF source optionally */
+ bool internal_dacref_en;
/* IN1/IN2/LOUT1/LOUT2/LOUT3 can optionally be differential */
bool in1_diff;
bool in2_diff;
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index ac4bee8..e6d7bb4 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -4552,6 +4552,8 @@ MODULE_DEVICE_TABLE(i2c, rt5677_i2c_id);
static int rt5677_parse_dt(struct rt5677_priv *rt5677, struct device_node *np)
{
of_property_read_u32(np, "realtek,micbias1", &rt5677->pdata.micbias1);
+ rt5677->pdata.internal_dacref_en = of_property_read_bool(np,
+ "realtek,internal-dacref-en");
rt5677->pdata.in1_diff = of_property_read_bool(np,
"realtek,in1-differential");
rt5677->pdata.in2_diff = of_property_read_bool(np,
@@ -4728,6 +4730,13 @@ static int rt5677_i2c_probe(struct i2c_client *i2c,
RT5677_MICBIAS1_CTRL_VDD_MASK,
rt5677->pdata.micbias1 << RT5677_MICBIAS1_CTRL_VDD_SFT);
+ if (rt5677->pdata.internal_dacref_en) {
+ regmap_update_bits(rt5677->regmap, RT5677_PR_BASE +
+ RT5677_TEST_CTRL1, 1 << 9, 1 << 9);
+ regmap_update_bits(rt5677->regmap, RT5677_PR_BASE +
+ RT5677_SOFT_DEPOP_DAC_CLK_CTRL, 1 << 5, 1 << 5);
+ }
+
if (rt5677->pdata.in1_diff)
regmap_update_bits(rt5677->regmap, RT5677_IN1,
RT5677_IN_DF1, RT5677_IN_DF1);
--
2.2.0.rc0.207.ga3a616c
next prev parent reply other threads:[~2014-12-11 4:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-11 4:15 [PATCH 1/3] ASoC: rt5677: add REGMAP_I2C and REGMAP_IRQ dependency Ben Zhang
2014-12-11 4:15 ` [PATCH 2/3] ASoC: rt5677: add a platform config option for MICBIAS voltage Ben Zhang
2014-12-12 13:27 ` Mark Brown
2014-12-12 23:48 ` Ben Zhang
2014-12-15 12:20 ` Mark Brown
2014-12-11 4:15 ` Ben Zhang [this message]
2014-12-12 13:34 ` [PATCH 3/3] ASoC: rt5677: add a platform config option for DACREF source Mark Brown
2014-12-12 13:25 ` [PATCH 1/3] ASoC: rt5677: add REGMAP_I2C and REGMAP_IRQ dependency Mark Brown
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