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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d 
 kernel/sound/soc/codecs/max98357a.c
....@@ -1,18 +1,11 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
2
- *
3
- * This program is free software; you can redistribute it and/or modify
4
- * it under the terms of the GNU General Public License version 2 and
5
- * only version 2 as published by the Free Software Foundation.
6
- *
7
- * This program is distributed in the hope that it will be useful,
8
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
9
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10
- * GNU General Public License for more details.
113  *
124  * max98357a.c -- MAX98357A ALSA SoC Codec driver
135  */
146 
157 #include <linux/acpi.h>
8
+#include <linux/delay.h>
169 #include <linux/device.h>
1710 #include <linux/err.h>
1811 #include <linux/gpio.h>
....@@ -27,53 +20,72 @@
2720 #include <sound/soc-dai.h>
2821 #include <sound/soc-dapm.h>
2922 
23
+struct max98357a_priv {
24
+	struct gpio_desc *sdmode;
25
+	unsigned int sdmode_delay;
26
+	int sdmode_switch;
27
+};
28
+
3029 static int max98357a_daiops_trigger(struct snd_pcm_substream *substream,
3130 		int cmd, struct snd_soc_dai *dai)
3231 {
33
-	struct gpio_desc *sdmode = snd_soc_dai_get_drvdata(dai);
32
+	struct snd_soc_component *component = dai->component;
33
+	struct max98357a_priv *max98357a =
34
+		snd_soc_component_get_drvdata(component);
3435 
35
-	if (!sdmode)
36
+	if (!max98357a->sdmode)
3637 		return 0;
3738 
3839 	switch (cmd) {
3940 	case SNDRV_PCM_TRIGGER_START:
4041 	case SNDRV_PCM_TRIGGER_RESUME:
4142 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
42
-		gpiod_set_value(sdmode, 1);
43
+		mdelay(max98357a->sdmode_delay);
44
+		if (max98357a->sdmode_switch) {
45
+			gpiod_set_value(max98357a->sdmode, 1);
46
+			dev_dbg(component->dev, "set sdmode to 1");
47
+		}
4348 		break;
4449 	case SNDRV_PCM_TRIGGER_STOP:
4550 	case SNDRV_PCM_TRIGGER_SUSPEND:
4651 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
47
-		gpiod_set_value(sdmode, 0);
52
+		gpiod_set_value(max98357a->sdmode, 0);
53
+		dev_dbg(component->dev, "set sdmode to 0");
4854 		break;
4955 	}
5056 
5157 	return 0;
5258 }
5359 
54
-static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
55
-	SND_SOC_DAPM_OUTPUT("Speaker"),
56
-};
57
-
58
-static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
59
-	{"Speaker", NULL, "HiFi Playback"},
60
-};
61
-
62
-static int max98357a_component_probe(struct snd_soc_component *component)
60
+static int max98357a_sdmode_event(struct snd_soc_dapm_widget *w,
61
+		struct snd_kcontrol *kcontrol, int event)
6362 {
64
-	struct gpio_desc *sdmode;
63
+	struct snd_soc_component *component =
64
+		snd_soc_dapm_to_component(w->dapm);
65
+	struct max98357a_priv *max98357a =
66
+		snd_soc_component_get_drvdata(component);
6567 
66
-	sdmode = devm_gpiod_get_optional(component->dev, "sdmode", GPIOD_OUT_LOW);
67
-	if (IS_ERR(sdmode))
68
-		return PTR_ERR(sdmode);
69
-
70
-	snd_soc_component_set_drvdata(component, sdmode);
68
+	if (event & SND_SOC_DAPM_POST_PMU)
69
+		max98357a->sdmode_switch = 1;
70
+	else if (event & SND_SOC_DAPM_POST_PMD)
71
+		max98357a->sdmode_switch = 0;
7172 
7273 	return 0;
7374 }
7475 
76
+static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
77
+	SND_SOC_DAPM_OUTPUT("Speaker"),
78
+	SND_SOC_DAPM_OUT_DRV_E("SD_MODE", SND_SOC_NOPM, 0, 0, NULL, 0,
79
+			max98357a_sdmode_event,
80
+			SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
81
+};
82
+
83
+static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
84
+	{"SD_MODE", NULL, "HiFi Playback"},
85
+	{"Speaker", NULL, "SD_MODE"},
86
+};
87
+
7588 static const struct snd_soc_component_driver max98357a_component_driver = {
76
-	.probe			= max98357a_component_probe,
7789 	.dapm_widgets		= max98357a_dapm_widgets,
7890 	.num_dapm_widgets	= ARRAY_SIZE(max98357a_dapm_widgets),
7991 	.dapm_routes		= max98357a_dapm_routes,
....@@ -85,7 +97,7 @@
8597 };
8698 
8799 static const struct snd_soc_dai_ops max98357a_dai_ops = {
88
-	.trigger	= max98357a_daiops_trigger,
100
+	.trigger        = max98357a_daiops_trigger,
89101 };
90102 
91103 static struct snd_soc_dai_driver max98357a_dai_driver = {
....@@ -97,7 +109,10 @@
97109 					SNDRV_PCM_FMTBIT_S32,
98110 		.rates		= SNDRV_PCM_RATE_8000 |
99111 					SNDRV_PCM_RATE_16000 |
112
+					SNDRV_PCM_RATE_32000 |
113
+					SNDRV_PCM_RATE_44100 |
100114 					SNDRV_PCM_RATE_48000 |
115
+					SNDRV_PCM_RATE_88200 |
101116 					SNDRV_PCM_RATE_96000,
102117 		.rate_min	= 8000,
103118 		.rate_max	= 96000,
....@@ -109,19 +124,38 @@
109124 
110125 static int max98357a_platform_probe(struct platform_device *pdev)
111126 {
127
+	struct max98357a_priv *max98357a;
128
+	int ret;
129
+
130
+	max98357a = devm_kzalloc(&pdev->dev, sizeof(*max98357a), GFP_KERNEL);
131
+	if (!max98357a)
132
+		return -ENOMEM;
133
+
134
+	max98357a->sdmode = devm_gpiod_get_optional(&pdev->dev,
135
+				"sdmode", GPIOD_OUT_LOW);
136
+	if (IS_ERR(max98357a->sdmode))
137
+		return PTR_ERR(max98357a->sdmode);
138
+
139
+	ret = device_property_read_u32(&pdev->dev, "sdmode-delay",
140
+					&max98357a->sdmode_delay);
141
+	if (ret) {
142
+		max98357a->sdmode_delay = 0;
143
+		dev_dbg(&pdev->dev,
144
+			"no optional property 'sdmode-delay' found, "
145
+			"default: no delay\n");
146
+	}
147
+
148
+	dev_set_drvdata(&pdev->dev, max98357a);
149
+
112150 	return devm_snd_soc_register_component(&pdev->dev,
113151 			&max98357a_component_driver,
114152 			&max98357a_dai_driver, 1);
115153 }
116154 
117
-static int max98357a_platform_remove(struct platform_device *pdev)
118
-{
119
-	return 0;
120
-}
121
-
122155 #ifdef CONFIG_OF
123156 static const struct of_device_id max98357a_device_id[] = {
124157 	{ .compatible = "maxim,max98357a" },
158
+	{ .compatible = "maxim,max98360a" },
125159 	{}
126160 };
127161 MODULE_DEVICE_TABLE(of, max98357a_device_id);
....@@ -130,6 +164,7 @@
130164 #ifdef CONFIG_ACPI
131165 static const struct acpi_device_id max98357a_acpi_match[] = {
132166 	{ "MX98357A", 0 },
167
+	{ "MX98360A", 0 },
133168 	{},
134169 };
135170 MODULE_DEVICE_TABLE(acpi, max98357a_acpi_match);
....@@ -142,7 +177,6 @@
142177 		.acpi_match_table = ACPI_PTR(max98357a_acpi_match),
143178 	},
144179 	.probe	= max98357a_platform_probe,
145
-	.remove = max98357a_platform_remove,
146180 };
147181 module_platform_driver(max98357a_platform_driver);
148182