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/pcm512x.c | 166 +++++++++++++++++++++++++++++++++++++++++++++++++------
1 files changed, 147 insertions(+), 19 deletions(-)
diff --git a/kernel/sound/soc/codecs/pcm512x.c b/kernel/sound/soc/codecs/pcm512x.c
index 5272c81..8153d3d 100644
--- a/kernel/sound/soc/codecs/pcm512x.c
+++ b/kernel/sound/soc/codecs/pcm512x.c
@@ -1,17 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for the PCM512x CODECs
*
* Author: Mark Brown <broonie@kernel.org>
* Copyright 2014 Linaro Ltd
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * 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.
*/
@@ -53,6 +45,9 @@
unsigned long overclock_pll;
unsigned long overclock_dac;
unsigned long overclock_dsp;
+ int mute;
+ struct mutex mutex;
+ unsigned int bclk_ratio;
};
/*
@@ -384,6 +379,61 @@
SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDS_SHIFT, 4,
pcm512x_ramp_step_text);
+static int pcm512x_update_mute(struct pcm512x_priv *pcm512x)
+{
+ return regmap_update_bits(
+ pcm512x->regmap, PCM512x_MUTE, PCM512x_RQML | PCM512x_RQMR,
+ (!!(pcm512x->mute & 0x5) << PCM512x_RQML_SHIFT)
+ | (!!(pcm512x->mute & 0x3) << PCM512x_RQMR_SHIFT));
+}
+
+static int pcm512x_digital_playback_switch_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
+
+ mutex_lock(&pcm512x->mutex);
+ ucontrol->value.integer.value[0] = !(pcm512x->mute & 0x4);
+ ucontrol->value.integer.value[1] = !(pcm512x->mute & 0x2);
+ mutex_unlock(&pcm512x->mutex);
+
+ return 0;
+}
+
+static int pcm512x_digital_playback_switch_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
+ int ret, changed = 0;
+
+ mutex_lock(&pcm512x->mutex);
+
+ if ((pcm512x->mute & 0x4) == (ucontrol->value.integer.value[0] << 2)) {
+ pcm512x->mute ^= 0x4;
+ changed = 1;
+ }
+ if ((pcm512x->mute & 0x2) == (ucontrol->value.integer.value[1] << 1)) {
+ pcm512x->mute ^= 0x2;
+ changed = 1;
+ }
+
+ if (changed) {
+ ret = pcm512x_update_mute(pcm512x);
+ if (ret != 0) {
+ dev_err(component->dev,
+ "Failed to update digital mute: %d\n", ret);
+ mutex_unlock(&pcm512x->mutex);
+ return ret;
+ }
+ }
+
+ mutex_unlock(&pcm512x->mutex);
+
+ return changed;
+}
+
static const struct snd_kcontrol_new pcm512x_controls[] = {
SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
@@ -391,8 +441,15 @@
PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
PCM512x_AGBL_SHIFT, PCM512x_AGBR_SHIFT, 1, 0, boost_tlv),
-SOC_DOUBLE("Digital Playback Switch", PCM512x_MUTE, PCM512x_RQML_SHIFT,
- PCM512x_RQMR_SHIFT, 1, 1),
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Digital Playback Switch",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = snd_ctl_boolean_stereo_info,
+ .get = pcm512x_digital_playback_switch_get,
+ .put = pcm512x_digital_playback_switch_put
+},
SOC_SINGLE("Deemphasis Switch", PCM512x_DSP, PCM512x_DEMP_SHIFT, 1, 1),
SOC_ENUM("DSP Program", pcm512x_dsp_program),
@@ -851,16 +908,21 @@
int fssp;
int gpio;
- lrclk_div = snd_soc_params_to_frame_size(params);
- if (lrclk_div == 0) {
- dev_err(dev, "No LRCLK?\n");
- return -EINVAL;
+ if (pcm512x->bclk_ratio > 0) {
+ lrclk_div = pcm512x->bclk_ratio;
+ } else {
+ lrclk_div = snd_soc_params_to_frame_size(params);
+
+ if (lrclk_div == 0) {
+ dev_err(dev, "No LRCLK?\n");
+ return -EINVAL;
+ }
}
if (!pcm512x->pll_out) {
sck_rate = clk_get_rate(pcm512x->sclk);
- bclk_div = params->rate_den * 64 / lrclk_div;
- bclk_rate = DIV_ROUND_CLOSEST(sck_rate, bclk_div);
+ bclk_rate = params_rate(params) * lrclk_div;
+ bclk_div = DIV_ROUND_CLOSEST(sck_rate, bclk_rate);
mck_rate = sck_rate;
} else {
@@ -1319,10 +1381,73 @@
return 0;
}
+static int pcm512x_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
+{
+ struct snd_soc_component *component = dai->component;
+ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
+
+ if (ratio > 256)
+ return -EINVAL;
+
+ pcm512x->bclk_ratio = ratio;
+
+ return 0;
+}
+
+static int pcm512x_mute(struct snd_soc_dai *dai, int mute, int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
+ int ret;
+ unsigned int mute_det;
+
+ mutex_lock(&pcm512x->mutex);
+
+ if (mute) {
+ pcm512x->mute |= 0x1;
+ ret = regmap_update_bits(pcm512x->regmap, PCM512x_MUTE,
+ PCM512x_RQML | PCM512x_RQMR,
+ PCM512x_RQML | PCM512x_RQMR);
+ if (ret != 0) {
+ dev_err(component->dev,
+ "Failed to set digital mute: %d\n", ret);
+ goto unlock;
+ }
+
+ regmap_read_poll_timeout(pcm512x->regmap,
+ PCM512x_ANALOG_MUTE_DET,
+ mute_det, (mute_det & 0x3) == 0,
+ 200, 10000);
+ } else {
+ pcm512x->mute &= ~0x1;
+ ret = pcm512x_update_mute(pcm512x);
+ if (ret != 0) {
+ dev_err(component->dev,
+ "Failed to update digital mute: %d\n", ret);
+ goto unlock;
+ }
+
+ regmap_read_poll_timeout(pcm512x->regmap,
+ PCM512x_ANALOG_MUTE_DET,
+ mute_det,
+ (mute_det & 0x3)
+ == ((~pcm512x->mute >> 1) & 0x3),
+ 200, 10000);
+ }
+
+unlock:
+ mutex_unlock(&pcm512x->mutex);
+
+ return ret;
+}
+
static const struct snd_soc_dai_ops pcm512x_dai_ops = {
.startup = pcm512x_dai_startup,
.hw_params = pcm512x_hw_params,
.set_fmt = pcm512x_set_fmt,
+ .mute_stream = pcm512x_mute,
+ .set_bclk_ratio = pcm512x_set_bclk_ratio,
+ .no_capture_mute = 1,
};
static struct snd_soc_dai_driver pcm512x_dai = {
@@ -1388,6 +1513,8 @@
if (!pcm512x)
return -ENOMEM;
+ mutex_init(&pcm512x->mutex);
+
dev_set_drvdata(dev, pcm512x);
pcm512x->regmap = regmap;
@@ -1406,8 +1533,9 @@
pcm512x->supply_nb[2].notifier_call = pcm512x_regulator_event_2;
for (i = 0; i < ARRAY_SIZE(pcm512x->supplies); i++) {
- ret = regulator_register_notifier(pcm512x->supplies[i].consumer,
- &pcm512x->supply_nb[i]);
+ ret = devm_regulator_register_notifier(
+ pcm512x->supplies[i].consumer,
+ &pcm512x->supply_nb[i]);
if (ret != 0) {
dev_err(dev,
"Failed to register regulator notifier: %d\n",
--
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