From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/sound/soc/codecs/ssm2602.c | 74 +++++++++++++++++++++---------------
1 files changed, 43 insertions(+), 31 deletions(-)
diff --git a/kernel/sound/soc/codecs/ssm2602.c b/kernel/sound/soc/codecs/ssm2602.c
index 501a4e7..9051602 100644
--- a/kernel/sound/soc/codecs/ssm2602.c
+++ b/kernel/sound/soc/codecs/ssm2602.c
@@ -1,31 +1,17 @@
-/*
- * File: sound/soc/codecs/ssm2602.c
- * Author: Cliff Cai <Cliff.Cai@analog.com>
- *
- * Created: Tue June 06 2008
- * Description: Driver for ssm2602 sound chip
- *
- * Modified:
- * Copyright 2008 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
+// SPDX-License-Identifier: GPL-2.0-or-later
+//
+// File: sound/soc/codecs/ssm2602.c
+// Author: Cliff Cai <Cliff.Cai@analog.com>
+//
+// Created: Tue June 06 2008
+// Description: Driver for ssm2602 sound chip
+//
+// Modified:
+// Copyright 2008 Analog Devices Inc.
+//
+// Bugs: Enter bugs at http://blackfin.uclinux.org/
+#include <linux/delay.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/slab.h>
@@ -111,7 +97,6 @@
SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
-SOC_SINGLE("Mic Switch", SSM2602_APANA, 1, 1, 1),
};
/* Output Mixer */
@@ -121,9 +106,30 @@
SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
};
+static const struct snd_kcontrol_new mic_ctl =
+ SOC_DAPM_SINGLE("Switch", SSM2602_APANA, 1, 1, 1);
+
/* Input mux */
static const struct snd_kcontrol_new ssm2602_input_mux_controls =
SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
+
+static int ssm2602_mic_switch_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ /*
+ * According to the ssm2603 data sheet (control register sequencing),
+ * the digital core should be activated only after all necessary bits
+ * in the power register are enabled, and a delay determined by the
+ * decoupling capacitor on the VMID pin has passed. If the digital core
+ * is activated too early, or even before the ADC is powered up, audible
+ * artifacts appear at the beginning and end of the recorded signal.
+ *
+ * In practice, audible artifacts disappear well over 500 ms.
+ */
+ msleep(500);
+
+ return 0;
+}
static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
@@ -145,6 +151,9 @@
SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
+
+SND_SOC_DAPM_SWITCH_E("Mic Switch", SSM2602_APANA, 1, 1, &mic_ctl,
+ ssm2602_mic_switch_event, SND_SOC_DAPM_PRE_PMU),
SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
@@ -178,8 +187,10 @@
{"LHPOUT", NULL, "Output Mixer"},
{"Input Mux", "Line", "Line Input"},
- {"Input Mux", "Mic", "Mic Bias"},
+ {"Input Mux", "Mic", "Mic Switch"},
{"ADC", NULL, "Input Mux"},
+
+ {"Mic Switch", NULL, "Mic Bias"},
{"Mic Bias", NULL, "MICIN"},
};
@@ -327,7 +338,7 @@
return 0;
}
-static int ssm2602_mute(struct snd_soc_dai *dai, int mute)
+static int ssm2602_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(dai->component);
@@ -494,9 +505,10 @@
static const struct snd_soc_dai_ops ssm2602_dai_ops = {
.startup = ssm2602_startup,
.hw_params = ssm2602_hw_params,
- .digital_mute = ssm2602_mute,
+ .mute_stream = ssm2602_mute,
.set_sysclk = ssm2602_set_dai_sysclk,
.set_fmt = ssm2602_set_dai_fmt,
+ .no_capture_mute = 1,
};
static struct snd_soc_dai_driver ssm2602_dai = {
--
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