Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) client-ip=23.128.96.38;
Received-SPF: Pass (protection.outlook.com: domain of nuvoton.com designates
 175.98.123.7 as permitted sender) receiver=protection.outlook.com;
 client-ip=175.98.123.7; helo=NTHCCAS04.nuvoton.com; pr=C
From:   Seven Lee <wtli@nuvoton.com>
To:     <broonie@kernel.org>
CC:     <lgirdwood@gmail.com>, <alsa-devel@alsa-project.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <robh+dt@kernel.org>, <conor+dt@kernel.org>,
        <YHCHuang@nuvoton.com>, <KCHSU0@nuvoton.com>, <CTLIN0@nuvoton.com>,
        <SJLIN0@nuvoton.com>, <wtli@nuvoton.com>, <scott6986@gmail.com>,
        <supercraig0719@gmail.com>, <dardar923@gmail.com>
Subject: [PATCH v3 2/2] ASoC: nau8821: Add slew rate controls.
Date:   Wed, 1 Nov 2023 14:35:14 +0800
Message-ID: <20231101063514.666754-3-wtli@nuvoton.com>
In-Reply-To: <20231101063514.666754-1-wtli@nuvoton.com>
References: <20231101063514.666754-1-wtli@nuvoton.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Nov 2023 06:35:30.4341
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 2bc017f8-2af8-41fe-f523-08dbdaa4be51
X-MS-Exchange-CrossTenant-Id: a3f24931-d403-4b4a-94f1-7d83ac638e07
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=a3f24931-d403-4b4a-94f1-7d83ac638e07;Ip=[175.98.123.7];Helo=[NTHCCAS04.nuvoton.com]
X-MS-Exchange-CrossTenant-AuthSource: SG2PEPF000B66D0.apcprd03.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SEZPR03MB8208
X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID,
	DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,
	SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED
	autolearn=unavailable autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (fry.vger.email [0.0.0.0]); Tue, 31 Oct 2023 23:36:54 -0700 (PDT)

The patch supports DMIC clock slew rate controls.

Signed-off-by: Seven Lee <wtli@nuvoton.com>
---
 sound/soc/codecs/nau8821.c | 7 +++++++
 sound/soc/codecs/nau8821.h | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c
index 6e1b6b26298a..012e347e6391 100644
--- a/sound/soc/codecs/nau8821.c
+++ b/sound/soc/codecs/nau8821.c
@@ -1738,6 +1738,10 @@ static int nau8821_read_device_properties(struct device *dev,
 		&nau8821->dmic_clk_threshold);
 	if (ret)
 		nau8821->dmic_clk_threshold = 3072000;
+	ret = device_property_read_u32(dev, "nuvoton,dmic-slew-rate",
+		&nau8821->dmic_slew_rate);
+	if (ret)
+		nau8821->dmic_slew_rate = 0;
 
 	return 0;
 }
@@ -1797,6 +1801,9 @@ static void nau8821_init_regs(struct nau8821 *nau8821)
 		NAU8821_ADC_SYNC_DOWN_MASK, NAU8821_ADC_SYNC_DOWN_64);
 	regmap_update_bits(regmap, NAU8821_R2C_DAC_CTRL1,
 		NAU8821_DAC_OVERSAMPLE_MASK, NAU8821_DAC_OVERSAMPLE_64);
+	regmap_update_bits(regmap, NAU8821_R13_DMIC_CTRL,
+		NAU8821_DMIC_SLEW_MASK, nau8821->dmic_slew_rate <<
+		NAU8821_DMIC_SLEW_SFT);
 	if (nau8821->left_input_single_end) {
 		regmap_update_bits(regmap, NAU8821_R6B_PGA_MUTE,
 			NAU8821_MUTE_MICNL_EN, NAU8821_MUTE_MICNL_EN);
diff --git a/sound/soc/codecs/nau8821.h b/sound/soc/codecs/nau8821.h
index 00a888ed07ce..62eaad130b2e 100644
--- a/sound/soc/codecs/nau8821.h
+++ b/sound/soc/codecs/nau8821.h
@@ -236,6 +236,8 @@
 #define NAU8821_DMIC_SRC_MASK	(0x3 << NAU8821_DMIC_SRC_SFT)
 #define NAU8821_CLK_DMIC_SRC	(0x2 << NAU8821_DMIC_SRC_SFT)
 #define NAU8821_DMIC_EN_SFT	0
+#define NAU8821_DMIC_SLEW_SFT  8
+#define NAU8821_DMIC_SLEW_MASK (0x7 << NAU8821_DMIC_SLEW_SFT)
 
 /* GPIO12_CTRL (0x1a) */
 #define NAU8821_JKDET_PULL_UP	(0x1 << 11) /* 0 - pull down, 1 - pull up */
@@ -573,6 +575,7 @@ struct nau8821 {
 	int jack_eject_debounce;
 	int fs;
 	int dmic_clk_threshold;
+	int dmic_slew_rate;
 	int key_enable;
 };
 
-- 
2.25.1