From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758609AbaLKEQM (ORCPT ); Wed, 10 Dec 2014 23:16:12 -0500 Received: from mail-qc0-f201.google.com ([209.85.216.201]:61923 "EHLO mail-qc0-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758574AbaLKEPx (ORCPT ); Wed, 10 Dec 2014 23:15:53 -0500 From: Ben Zhang To: Mark Brown Cc: alsa-devel@alsa-project.org, Liam Girdwood , Bard Liao , Oder Chiou , Anatol Pomozov , Dylan Reid , Albert Chen , linux-kernel@vger.kernel.org, Ben Zhang Subject: [PATCH 3/3] ASoC: rt5677: add a platform config option for DACREF source Date: Wed, 10 Dec 2014 20:15:27 -0800 Message-Id: <1418271327-14710-3-git-send-email-benzh@chromium.org> X-Mailer: git-send-email 2.2.0.rc0.207.ga3a616c In-Reply-To: <1418271327-14710-1-git-send-email-benzh@chromium.org> References: <1418271327-14710-1-git-send-email-benzh@chromium.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.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 --- 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