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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/sound/soc/codecs/simple-amplifier.c
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@@ -1,24 +1,12 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (c) 2017 BayLibre, SAS.
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  * Author: Jerome Brunet <jbrunet@baylibre.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of version 2 of the GNU General Public License as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, see <http://www.gnu.org/licenses/>.
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- * The full GNU General Public License is included in this distribution
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- * in the file called COPYING.
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  */
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 #include <linux/gpio/consumer.h>
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 #include <linux/module.h>
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+#include <linux/regulator/consumer.h>
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 #include <sound/soc.h>
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11
 
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 #define DRV_NAME "simple-amplifier"
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@@ -58,11 +46,14 @@
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 			       (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD)),
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 	SND_SOC_DAPM_OUTPUT("OUTL"),
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 	SND_SOC_DAPM_OUTPUT("OUTR"),
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+	SND_SOC_DAPM_REGULATOR_SUPPLY("VCC", 20, 0),
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 };
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 static const struct snd_soc_dapm_route simple_amp_dapm_routes[] = {
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 	{ "DRV", NULL, "INL" },
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 	{ "DRV", NULL, "INR" },
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+	{ "OUTL", NULL, "VCC" },
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+	{ "OUTR", NULL, "VCC" },
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 	{ "OUTL", NULL, "DRV" },
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 	{ "OUTR", NULL, "DRV" },
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 };
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@@ -85,7 +76,8 @@
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 		return -ENOMEM;
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 	platform_set_drvdata(pdev, priv);
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-	priv->gpiod_enable = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
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+	priv->gpiod_enable = devm_gpiod_get_optional(dev, "enable",
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+						     GPIOD_OUT_LOW);
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 	if (IS_ERR(priv->gpiod_enable)) {
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 		err = PTR_ERR(priv->gpiod_enable);
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 		if (err != -EPROBE_DEFER)