ASoC: rt5665: fix wrong register for bclk ratio control
[sfrench/cifs-2.6.git] / sound / soc / codecs / pcm3008.c
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
31 static 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
44 static 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
57 static const struct snd_soc_dapm_widget pcm3008_dapm_widgets[] = {
58 SND_SOC_DAPM_INPUT("VINL"),
59 SND_SOC_DAPM_INPUT("VINR"),
60
61 SND_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),
63 SND_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
66 SND_SOC_DAPM_OUTPUT("VOUTL"),
67 SND_SOC_DAPM_OUTPUT("VOUTR"),
68 };
69
70 static 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
83 static 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
101 static 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
110 static 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
153 static int pcm3008_codec_remove(struct platform_device *pdev)
154 {
155         snd_soc_unregister_codec(&pdev->dev);
156
157         return 0;
158 }
159
160 MODULE_ALIAS("platform:pcm3008-codec");
161
162 static 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
170 module_platform_driver(pcm3008_codec_driver);
171
172 MODULE_DESCRIPTION("Soc PCM3008 driver");
173 MODULE_AUTHOR("Hugo Villeneuve");
174 MODULE_LICENSE("GPL");