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Linux/sound/soc/intel/boards/byt-max98090.c

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  1 /*
  2  * Intel Baytrail SST MAX98090 machine driver
  3  * Copyright (c) 2014, Intel Corporation.
  4  *
  5  * This program is free software; you can redistribute it and/or modify it
  6  * under the terms and conditions of the GNU General Public License,
  7  * version 2, as published by the Free Software Foundation.
  8  *
  9  * This program is distributed in the hope it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 12  * more details.
 13  */
 14 
 15 #include <linux/init.h>
 16 #include <linux/module.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/acpi.h>
 19 #include <linux/device.h>
 20 #include <linux/gpio.h>
 21 #include <linux/gpio/consumer.h>
 22 #include <linux/slab.h>
 23 #include <sound/pcm.h>
 24 #include <sound/pcm_params.h>
 25 #include <sound/soc.h>
 26 #include <sound/jack.h>
 27 #include "../../codecs/max98090.h"
 28 
 29 struct byt_max98090_private {
 30         struct snd_soc_jack jack;
 31 };
 32 
 33 static const struct snd_soc_dapm_widget byt_max98090_widgets[] = {
 34         SND_SOC_DAPM_HP("Headphone", NULL),
 35         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 36         SND_SOC_DAPM_MIC("Int Mic", NULL),
 37         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 38 };
 39 
 40 static const struct snd_soc_dapm_route byt_max98090_audio_map[] = {
 41         {"IN34", NULL, "Headset Mic"},
 42         {"Headset Mic", NULL, "MICBIAS"},
 43         {"DMICL", NULL, "Int Mic"},
 44         {"Headphone", NULL, "HPL"},
 45         {"Headphone", NULL, "HPR"},
 46         {"Ext Spk", NULL, "SPKL"},
 47         {"Ext Spk", NULL, "SPKR"},
 48 };
 49 
 50 static const struct snd_kcontrol_new byt_max98090_controls[] = {
 51         SOC_DAPM_PIN_SWITCH("Headphone"),
 52         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 53         SOC_DAPM_PIN_SWITCH("Int Mic"),
 54         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 55 };
 56 
 57 static struct snd_soc_jack_pin hs_jack_pins[] = {
 58         {
 59                 .pin    = "Headphone",
 60                 .mask   = SND_JACK_HEADPHONE,
 61         },
 62         {
 63                 .pin    = "Headset Mic",
 64                 .mask   = SND_JACK_MICROPHONE,
 65         },
 66 };
 67 
 68 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 69         {
 70                 .name           = "hp",
 71                 .report         = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
 72                 .debounce_time  = 200,
 73         },
 74         {
 75                 .name           = "mic",
 76                 .invert         = 1,
 77                 .report         = SND_JACK_MICROPHONE,
 78                 .debounce_time  = 200,
 79         },
 80 };
 81 
 82 static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
 83 static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
 84 
 85 static const struct acpi_gpio_mapping acpi_byt_max98090_gpios[] = {
 86         { "hp-gpios", &hp_gpios, 1 },
 87         { "mic-gpios", &mic_gpios, 1 },
 88         {},
 89 };
 90 
 91 static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
 92 {
 93         int ret;
 94         struct snd_soc_card *card = runtime->card;
 95         struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
 96         struct snd_soc_jack *jack = &drv->jack;
 97 
 98         card->dapm.idle_bias_off = true;
 99 
100         ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
101                                      M98090_REG_SYSTEM_CLOCK,
102                                      25000000, SND_SOC_CLOCK_IN);
103         if (ret < 0) {
104                 dev_err(card->dev, "Can't set codec clock %d\n", ret);
105                 return ret;
106         }
107 
108         /* Enable jack detection */
109         ret = snd_soc_card_jack_new(runtime->card, "Headset",
110                                     SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
111                                     hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
112         if (ret)
113                 return ret;
114 
115         return snd_soc_jack_add_gpiods(card->dev->parent, jack,
116                                        ARRAY_SIZE(hs_jack_gpios),
117                                        hs_jack_gpios);
118 }
119 
120 static struct snd_soc_dai_link byt_max98090_dais[] = {
121         {
122                 .name = "Baytrail Audio",
123                 .stream_name = "Audio",
124                 .cpu_dai_name = "baytrail-pcm-audio",
125                 .codec_dai_name = "HiFi",
126                 .codec_name = "i2c-193C9890:00",
127                 .platform_name = "baytrail-pcm-audio",
128                 .init = byt_max98090_init,
129                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
130                            SND_SOC_DAIFMT_CBS_CFS,
131         },
132 };
133 
134 static struct snd_soc_card byt_max98090_card = {
135         .name = "byt-max98090",
136         .owner = THIS_MODULE,
137         .dai_link = byt_max98090_dais,
138         .num_links = ARRAY_SIZE(byt_max98090_dais),
139         .dapm_widgets = byt_max98090_widgets,
140         .num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
141         .dapm_routes = byt_max98090_audio_map,
142         .num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
143         .controls = byt_max98090_controls,
144         .num_controls = ARRAY_SIZE(byt_max98090_controls),
145         .fully_routed = true,
146 };
147 
148 static int byt_max98090_probe(struct platform_device *pdev)
149 {
150         struct device *dev = &pdev->dev;
151         struct byt_max98090_private *priv;
152         int ret_val;
153 
154         priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
155         if (!priv) {
156                 dev_err(&pdev->dev, "allocation failed\n");
157                 return -ENOMEM;
158         }
159 
160         ret_val = devm_acpi_dev_add_driver_gpios(dev->parent, acpi_byt_max98090_gpios);
161         if (ret_val)
162                 dev_dbg(dev, "Unable to add GPIO mapping table\n");
163 
164         byt_max98090_card.dev = &pdev->dev;
165         snd_soc_card_set_drvdata(&byt_max98090_card, priv);
166         ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
167         if (ret_val) {
168                 dev_err(&pdev->dev,
169                         "snd_soc_register_card failed %d\n", ret_val);
170                 return ret_val;
171         }
172 
173         return 0;
174 }
175 
176 static struct platform_driver byt_max98090_driver = {
177         .probe = byt_max98090_probe,
178         .driver = {
179                 .name = "byt-max98090",
180                 .pm = &snd_soc_pm_ops,
181         },
182 };
183 module_platform_driver(byt_max98090_driver)
184 
185 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
186 MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
187 MODULE_LICENSE("GPL v2");
188 MODULE_ALIAS("platform:byt-max98090");
189 

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