From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/sound/soc/codecs/dmic.c | 61 ++++++++++++++++++++++--------
1 files changed, 44 insertions(+), 17 deletions(-)
diff --git a/kernel/sound/soc/codecs/dmic.c b/kernel/sound/soc/codecs/dmic.c
index 8c4926d..5d079d9 100644
--- a/kernel/sound/soc/codecs/dmic.c
+++ b/kernel/sound/soc/codecs/dmic.c
@@ -1,22 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* dmic.c -- SoC audio for Generic Digital MICs
*
* Author: Liam Girdwood <lrg@slimlogic.co.uk>
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
*/
#include <linux/delay.h>
@@ -30,9 +16,39 @@
#include <sound/soc.h>
#include <sound/soc-dapm.h>
+#define MAX_MODESWITCH_DELAY 70
+static int modeswitch_delay;
+module_param(modeswitch_delay, uint, 0644);
+
+static int wakeup_delay;
+module_param(wakeup_delay, uint, 0644);
+
struct dmic {
struct gpio_desc *gpio_en;
int wakeup_delay;
+ /* Delay after DMIC mode switch */
+ int modeswitch_delay;
+};
+
+static int dmic_daiops_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct dmic *dmic = snd_soc_component_get_drvdata(component);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_STOP:
+ if (dmic->modeswitch_delay)
+ mdelay(dmic->modeswitch_delay);
+
+ break;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops dmic_dai_ops = {
+ .trigger = dmic_daiops_trigger,
};
static int dmic_aif_event(struct snd_soc_dapm_widget *w,
@@ -43,14 +59,14 @@
switch (event) {
case SND_SOC_DAPM_POST_PMU:
if (dmic->gpio_en)
- gpiod_set_value(dmic->gpio_en, 1);
+ gpiod_set_value_cansleep(dmic->gpio_en, 1);
if (dmic->wakeup_delay)
msleep(dmic->wakeup_delay);
break;
case SND_SOC_DAPM_POST_PMD:
if (dmic->gpio_en)
- gpiod_set_value(dmic->gpio_en, 0);
+ gpiod_set_value_cansleep(dmic->gpio_en, 0);
break;
}
@@ -68,6 +84,7 @@
| SNDRV_PCM_FMTBIT_S24_LE
| SNDRV_PCM_FMTBIT_S16_LE,
},
+ .ops = &dmic_dai_ops,
};
static int dmic_component_probe(struct snd_soc_component *component)
@@ -85,6 +102,15 @@
device_property_read_u32(component->dev, "wakeup-delay-ms",
&dmic->wakeup_delay);
+ device_property_read_u32(component->dev, "modeswitch-delay-ms",
+ &dmic->modeswitch_delay);
+ if (wakeup_delay)
+ dmic->wakeup_delay = wakeup_delay;
+ if (modeswitch_delay)
+ dmic->modeswitch_delay = modeswitch_delay;
+
+ if (dmic->modeswitch_delay > MAX_MODESWITCH_DELAY)
+ dmic->modeswitch_delay = MAX_MODESWITCH_DELAY;
snd_soc_component_set_drvdata(component, dmic);
@@ -148,6 +174,7 @@
{.compatible = "dmic-codec"},
{}
};
+MODULE_DEVICE_TABLE(of, dmic_dev_match);
static struct platform_driver dmic_driver = {
.driver = {
--
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