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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * ALSA Soc PCM3008 codec support
4 *
5 * Author: Hugo Villeneuve
6 * Copyright (C) 2008 Lyrtech inc
7 *
8 * Based on AC97 Soc codec, original copyright follow:
9 * Copyright 2005 Wolfson Microelectronics PLC.
10 *
11 * Generic PCM3008 support.
12 */
13
14#include <linux/init.h>
15#include <linux/kernel.h>
16#include <linux/device.h>
17#include <linux/gpio.h>
18#include <linux/slab.h>
19#include <linux/module.h>
20#include <sound/core.h>
21#include <sound/pcm.h>
22#include <sound/initval.h>
23#include <sound/soc.h>
24
25#include "pcm3008.h"
26
27static int pcm3008_dac_ev(struct snd_soc_dapm_widget *w,
28 struct snd_kcontrol *kcontrol,
29 int event)
30{
31 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
32 struct pcm3008_setup_data *setup = component->dev->platform_data;
33
34 gpio_set_value_cansleep(setup->pdda_pin,
35 SND_SOC_DAPM_EVENT_ON(event));
36
37 return 0;
38}
39
40static int pcm3008_adc_ev(struct snd_soc_dapm_widget *w,
41 struct snd_kcontrol *kcontrol,
42 int event)
43{
44 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
45 struct pcm3008_setup_data *setup = component->dev->platform_data;
46
47 gpio_set_value_cansleep(setup->pdad_pin,
48 SND_SOC_DAPM_EVENT_ON(event));
49
50 return 0;
51}
52
53static const struct snd_soc_dapm_widget pcm3008_dapm_widgets[] = {
54SND_SOC_DAPM_INPUT("VINL"),
55SND_SOC_DAPM_INPUT("VINR"),
56
57SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_dac_ev,
58 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
59SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_adc_ev,
60 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
61
62SND_SOC_DAPM_OUTPUT("VOUTL"),
63SND_SOC_DAPM_OUTPUT("VOUTR"),
64};
65
66static const struct snd_soc_dapm_route pcm3008_dapm_routes[] = {
67 { "PCM3008 Capture", NULL, "ADC" },
68 { "ADC", NULL, "VINL" },
69 { "ADC", NULL, "VINR" },
70
71 { "DAC", NULL, "PCM3008 Playback" },
72 { "VOUTL", NULL, "DAC" },
73 { "VOUTR", NULL, "DAC" },
74};
75
76#define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
77 SNDRV_PCM_RATE_48000)
78
79static struct snd_soc_dai_driver pcm3008_dai = {
80 .name = "pcm3008-hifi",
81 .playback = {
82 .stream_name = "PCM3008 Playback",
83 .channels_min = 1,
84 .channels_max = 2,
85 .rates = PCM3008_RATES,
86 .formats = SNDRV_PCM_FMTBIT_S16_LE,
87 },
88 .capture = {
89 .stream_name = "PCM3008 Capture",
90 .channels_min = 1,
91 .channels_max = 2,
92 .rates = PCM3008_RATES,
93 .formats = SNDRV_PCM_FMTBIT_S16_LE,
94 },
95};
96
97static const struct snd_soc_component_driver soc_component_dev_pcm3008 = {
98 .dapm_widgets = pcm3008_dapm_widgets,
99 .num_dapm_widgets = ARRAY_SIZE(pcm3008_dapm_widgets),
100 .dapm_routes = pcm3008_dapm_routes,
101 .num_dapm_routes = ARRAY_SIZE(pcm3008_dapm_routes),
102 .idle_bias_on = 1,
103 .use_pmdown_time = 1,
104 .endianness = 1,
105};
106
107static int pcm3008_codec_probe(struct platform_device *pdev)
108{
109 struct pcm3008_setup_data *setup = pdev->dev.platform_data;
110 int ret;
111
112 if (!setup)
113 return -EINVAL;
114
115 /* DEM1 DEM0 DE-EMPHASIS_MODE
116 * Low Low De-emphasis 44.1 kHz ON
117 * Low High De-emphasis OFF
118 * High Low De-emphasis 48 kHz ON
119 * High High De-emphasis 32 kHz ON
120 */
121
122 /* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */
123 ret = devm_gpio_request_one(&pdev->dev, setup->dem0_pin,
124 GPIOF_OUT_INIT_HIGH, "codec_dem0");
125 if (ret != 0)
126 return ret;
127
128 /* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */
129 ret = devm_gpio_request_one(&pdev->dev, setup->dem1_pin,
130 GPIOF_OUT_INIT_LOW, "codec_dem1");
131 if (ret != 0)
132 return ret;
133
134 /* Configure PDAD GPIO. */
135 ret = devm_gpio_request_one(&pdev->dev, setup->pdad_pin,
136 GPIOF_OUT_INIT_LOW, "codec_pdad");
137 if (ret != 0)
138 return ret;
139
140 /* Configure PDDA GPIO. */
141 ret = devm_gpio_request_one(&pdev->dev, setup->pdda_pin,
142 GPIOF_OUT_INIT_LOW, "codec_pdda");
143 if (ret != 0)
144 return ret;
145
146 return devm_snd_soc_register_component(&pdev->dev,
147 &soc_component_dev_pcm3008, &pcm3008_dai, 1);
148}
149
150MODULE_ALIAS("platform:pcm3008-codec");
151
152static struct platform_driver pcm3008_codec_driver = {
153 .probe = pcm3008_codec_probe,
154 .driver = {
155 .name = "pcm3008-codec",
156 },
157};
158
159module_platform_driver(pcm3008_codec_driver);
160
161MODULE_DESCRIPTION("Soc PCM3008 driver");
162MODULE_AUTHOR("Hugo Villeneuve");
163MODULE_LICENSE("GPL");
1/*
2 * ALSA Soc PCM3008 codec support
3 *
4 * Author: Hugo Villeneuve
5 * Copyright (C) 2008 Lyrtech inc
6 *
7 * Based on AC97 Soc codec, original copyright follow:
8 * Copyright 2005 Wolfson Microelectronics PLC.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * Generic PCM3008 support.
16 */
17
18#include <linux/init.h>
19#include <linux/kernel.h>
20#include <linux/device.h>
21#include <linux/gpio.h>
22#include <linux/slab.h>
23#include <linux/module.h>
24#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/initval.h>
27#include <sound/soc.h>
28
29#include "pcm3008.h"
30
31static int pcm3008_dac_ev(struct snd_soc_dapm_widget *w,
32 struct snd_kcontrol *kcontrol,
33 int event)
34{
35 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
36 struct pcm3008_setup_data *setup = codec->dev->platform_data;
37
38 gpio_set_value_cansleep(setup->pdda_pin,
39 SND_SOC_DAPM_EVENT_ON(event));
40
41 return 0;
42}
43
44static int pcm3008_adc_ev(struct snd_soc_dapm_widget *w,
45 struct snd_kcontrol *kcontrol,
46 int event)
47{
48 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
49 struct pcm3008_setup_data *setup = codec->dev->platform_data;
50
51 gpio_set_value_cansleep(setup->pdad_pin,
52 SND_SOC_DAPM_EVENT_ON(event));
53
54 return 0;
55}
56
57static const struct snd_soc_dapm_widget pcm3008_dapm_widgets[] = {
58SND_SOC_DAPM_INPUT("VINL"),
59SND_SOC_DAPM_INPUT("VINR"),
60
61SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_dac_ev,
62 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
63SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0, pcm3008_adc_ev,
64 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
65
66SND_SOC_DAPM_OUTPUT("VOUTL"),
67SND_SOC_DAPM_OUTPUT("VOUTR"),
68};
69
70static const struct snd_soc_dapm_route pcm3008_dapm_routes[] = {
71 { "PCM3008 Capture", NULL, "ADC" },
72 { "ADC", NULL, "VINL" },
73 { "ADC", NULL, "VINR" },
74
75 { "DAC", NULL, "PCM3008 Playback" },
76 { "VOUTL", NULL, "DAC" },
77 { "VOUTR", NULL, "DAC" },
78};
79
80#define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
81 SNDRV_PCM_RATE_48000)
82
83static struct snd_soc_dai_driver pcm3008_dai = {
84 .name = "pcm3008-hifi",
85 .playback = {
86 .stream_name = "PCM3008 Playback",
87 .channels_min = 1,
88 .channels_max = 2,
89 .rates = PCM3008_RATES,
90 .formats = SNDRV_PCM_FMTBIT_S16_LE,
91 },
92 .capture = {
93 .stream_name = "PCM3008 Capture",
94 .channels_min = 1,
95 .channels_max = 2,
96 .rates = PCM3008_RATES,
97 .formats = SNDRV_PCM_FMTBIT_S16_LE,
98 },
99};
100
101static struct snd_soc_codec_driver soc_codec_dev_pcm3008 = {
102 .component_driver = {
103 .dapm_widgets = pcm3008_dapm_widgets,
104 .num_dapm_widgets = ARRAY_SIZE(pcm3008_dapm_widgets),
105 .dapm_routes = pcm3008_dapm_routes,
106 .num_dapm_routes = ARRAY_SIZE(pcm3008_dapm_routes),
107 },
108};
109
110static int pcm3008_codec_probe(struct platform_device *pdev)
111{
112 struct pcm3008_setup_data *setup = pdev->dev.platform_data;
113 int ret;
114
115 if (!setup)
116 return -EINVAL;
117
118 /* DEM1 DEM0 DE-EMPHASIS_MODE
119 * Low Low De-emphasis 44.1 kHz ON
120 * Low High De-emphasis OFF
121 * High Low De-emphasis 48 kHz ON
122 * High High De-emphasis 32 kHz ON
123 */
124
125 /* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */
126 ret = devm_gpio_request_one(&pdev->dev, setup->dem0_pin,
127 GPIOF_OUT_INIT_HIGH, "codec_dem0");
128 if (ret != 0)
129 return ret;
130
131 /* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */
132 ret = devm_gpio_request_one(&pdev->dev, setup->dem1_pin,
133 GPIOF_OUT_INIT_LOW, "codec_dem1");
134 if (ret != 0)
135 return ret;
136
137 /* Configure PDAD GPIO. */
138 ret = devm_gpio_request_one(&pdev->dev, setup->pdad_pin,
139 GPIOF_OUT_INIT_LOW, "codec_pdad");
140 if (ret != 0)
141 return ret;
142
143 /* Configure PDDA GPIO. */
144 ret = devm_gpio_request_one(&pdev->dev, setup->pdda_pin,
145 GPIOF_OUT_INIT_LOW, "codec_pdda");
146 if (ret != 0)
147 return ret;
148
149 return snd_soc_register_codec(&pdev->dev,
150 &soc_codec_dev_pcm3008, &pcm3008_dai, 1);
151}
152
153static int pcm3008_codec_remove(struct platform_device *pdev)
154{
155 snd_soc_unregister_codec(&pdev->dev);
156
157 return 0;
158}
159
160MODULE_ALIAS("platform:pcm3008-codec");
161
162static struct platform_driver pcm3008_codec_driver = {
163 .probe = pcm3008_codec_probe,
164 .remove = pcm3008_codec_remove,
165 .driver = {
166 .name = "pcm3008-codec",
167 },
168};
169
170module_platform_driver(pcm3008_codec_driver);
171
172MODULE_DESCRIPTION("Soc PCM3008 driver");
173MODULE_AUTHOR("Hugo Villeneuve");
174MODULE_LICENSE("GPL");