1 // SPDX-License-Identifier: GPL-2.0-only 1
2 //
3 // rt1015p.c -- RT1015P ALSA SoC audio ampli
4 //
5 // Copyright 2020 The Linux Foundation. All ri
6
7 #include <linux/acpi.h>
8 #include <linux/delay.h>
9 #include <linux/device.h>
10 #include <linux/err.h>
11 #include <linux/gpio/consumer.h>
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/of.h>
15 #include <linux/platform_device.h>
16 #include <sound/pcm.h>
17 #include <sound/soc.h>
18 #include <sound/soc-dai.h>
19 #include <sound/soc-dapm.h>
20
21 struct rt1015p_priv {
22 struct gpio_desc *sdb;
23 bool calib_done;
24 };
25
26 static int rt1015p_sdb_event(struct snd_soc_da
27 struct snd_kcontrol *kcontrol,
28 {
29 struct snd_soc_component *component =
30 snd_soc_dapm_to_component(w->d
31 struct rt1015p_priv *rt1015p =
32 snd_soc_component_get_drvdata(
33
34 if (!rt1015p->sdb)
35 return 0;
36
37 switch (event) {
38 case SND_SOC_DAPM_PRE_PMU:
39 gpiod_set_value_cansleep(rt101
40 dev_dbg(component->dev, "set s
41
42 if (!rt1015p->calib_done) {
43 msleep(300);
44 rt1015p->calib_done =
45 }
46 break;
47 case SND_SOC_DAPM_POST_PMD:
48 gpiod_set_value_cansleep(rt101
49 dev_dbg(component->dev, "set s
50 break;
51 default:
52 break;
53 }
54
55 return 0;
56 }
57
58 static const struct snd_soc_dapm_widget rt1015
59 SND_SOC_DAPM_OUTPUT("Speaker"),
60 SND_SOC_DAPM_OUT_DRV_E("SDB", SND_SOC_
61 rt1015p_sdb_event,
62 SND_SOC_DAPM_PRE_PMU |
63 };
64
65 static const struct snd_soc_dapm_route rt1015p
66 {"SDB", NULL, "HiFi Playback"},
67 {"Speaker", NULL, "SDB"},
68 };
69
70 #ifdef CONFIG_PM
71 static int rt1015p_suspend(struct snd_soc_comp
72 {
73 struct rt1015p_priv *rt1015p = snd_soc
74
75 rt1015p->calib_done = false;
76 return 0;
77 }
78 #else
79 #define rt1015p_suspend NULL
80 #endif
81
82 static const struct snd_soc_component_driver r
83 .suspend = rt1015p_susp
84 .dapm_widgets = rt1015p_dapm
85 .num_dapm_widgets = ARRAY_SIZE(r
86 .dapm_routes = rt1015p_dapm
87 .num_dapm_routes = ARRAY_SIZE(r
88 .idle_bias_on = 1,
89 .use_pmdown_time = 1,
90 .endianness = 1,
91 };
92
93 static struct snd_soc_dai_driver rt1015p_dai_d
94 .name = "HiFi",
95 .playback = {
96 .stream_name = "HiFi Playba
97 .formats = SNDRV_PCM_FM
98 SNDRV_
99 .rates = SNDRV_PCM_RA
100 .channels_min = 1,
101 .channels_max = 2,
102 },
103 };
104
105 static int rt1015p_platform_probe(struct platf
106 {
107 struct rt1015p_priv *rt1015p;
108
109 rt1015p = devm_kzalloc(&pdev->dev, siz
110 if (!rt1015p)
111 return -ENOMEM;
112
113 rt1015p->sdb = devm_gpiod_get_optional
114 "sdb", GPIOD_O
115 if (IS_ERR(rt1015p->sdb))
116 return PTR_ERR(rt1015p->sdb);
117
118 dev_set_drvdata(&pdev->dev, rt1015p);
119
120 return devm_snd_soc_register_component
121 &rt1015p_component_dri
122 &rt1015p_dai_driver, 1
123 }
124
125 #ifdef CONFIG_OF
126 static const struct of_device_id rt1015p_devic
127 { .compatible = "realtek,rt1015p" },
128 { .compatible = "realtek,rt1019p" },
129 {}
130 };
131 MODULE_DEVICE_TABLE(of, rt1015p_device_id);
132 #endif
133
134 #ifdef CONFIG_ACPI
135 static const struct acpi_device_id rt1015p_acp
136 { "RTL1015", 0},
137 { "RTL1019", 0},
138 { },
139 };
140 MODULE_DEVICE_TABLE(acpi, rt1015p_acpi_match);
141 #endif
142
143 static struct platform_driver rt1015p_platform
144 .driver = {
145 .name = "rt1015p",
146 .of_match_table = of_match_ptr
147 .acpi_match_table = ACPI_PTR(r
148 },
149 .probe = rt1015p_platform_probe,
150 };
151 module_platform_driver(rt1015p_platform_driver
152
153 MODULE_DESCRIPTION("ASoC RT1015P driver");
154 MODULE_LICENSE("GPL v2");
155
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