sound/soc/samsung/smartq_wm8987.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
   4 //
   5 // Based on smdk6410_wm8987.c
   6 //     Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
   7 //     Graeme Gregory - graeme.gregory@wolfsonmicro.com
   8
   9 #include <linux/gpio/consumer.h>
  10 #include <linux/module.h>
  11
  12 #include <sound/soc.h>
  13 #include <sound/jack.h>
  14
  15 #include "i2s.h"
  16 #include "../codecs/wm8750.h"
  17
  18 /*
  19  * WM8987 is register compatible with WM8750, so using that as base driver.
  20  */
  21
  22 static struct snd_soc_card snd_soc_smartq;
  23
  24 static int smartq_hifi_hw_params(struct snd_pcm_substream *substream,
  25         struct snd_pcm_hw_params *params)
  26 {
  27         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  28         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  29         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  30         unsigned int clk = 0;
  31         int ret;
  32
  33         switch (params_rate(params)) {
  34         case 8000:
  35         case 16000:
  36         case 32000:
  37         case 48000:
  38         case 96000:
  39                 clk = 12288000;
  40                 break;
  41         case 11025:
  42         case 22050:
  43         case 44100:
  44         case 88200:
  45                 clk = 11289600;
  46                 break;
  47         }
  48
  49         /* Use PCLK for I2S signal generation */
  50         ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
  51                                         0, SND_SOC_CLOCK_IN);
  52         if (ret < 0)
  53                 return ret;
  54
  55         /* Gate the RCLK output on PAD */
  56         ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
  57                                         0, SND_SOC_CLOCK_IN);
  58         if (ret < 0)
  59                 return ret;
  60
  61         /* set the codec system clock for DAC and ADC */
  62         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
  63                                      SND_SOC_CLOCK_IN);
  64         if (ret < 0)
  65                 return ret;
  66
  67         return 0;
  68 }
  69
  70 /*
  71  * SmartQ WM8987 HiFi DAI operations.
  72  */
  73 static struct snd_soc_ops smartq_hifi_ops = {
  74         .hw_params = smartq_hifi_hw_params,
  75 };
  76
  77 static struct snd_soc_jack smartq_jack;
  78
  79 static struct snd_soc_jack_pin smartq_jack_pins[] = {
  80         /* Disable speaker when headphone is plugged in */
  81         {
  82                 .pin    = "Internal Speaker",
  83                 .mask   = SND_JACK_HEADPHONE,
  84         },
  85 };
  86
  87 static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
  88         {
  89                 .gpio           = -1,
  90                 .name           = "headphone detect",
  91                 .report         = SND_JACK_HEADPHONE,
  92                 .debounce_time  = 200,
  93         },
  94 };
  95
  96 static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
  97         SOC_DAPM_PIN_SWITCH("Internal Speaker"),
  98         SOC_DAPM_PIN_SWITCH("Headphone Jack"),
  99         SOC_DAPM_PIN_SWITCH("Internal Mic"),
 100 };
 101
 102 static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
 103                                 struct snd_kcontrol *k,
 104                                 int event)
 105 {
 106         struct gpio_desc *gpio = snd_soc_card_get_drvdata(&snd_soc_smartq);
 107
 108         gpiod_set_value(gpio, SND_SOC_DAPM_EVENT_OFF(event));
 109
 110         return 0;
 111 }
 112
 113 static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
 114         SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
 115         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 116         SND_SOC_DAPM_MIC("Internal Mic", NULL),
 117 };
 118
 119 static const struct snd_soc_dapm_route audio_map[] = {
 120         {"Headphone Jack", NULL, "LOUT2"},
 121         {"Headphone Jack", NULL, "ROUT2"},
 122
 123         {"Internal Speaker", NULL, "LOUT2"},
 124         {"Internal Speaker", NULL, "ROUT2"},
 125
 126         {"Mic Bias", NULL, "Internal Mic"},
 127         {"LINPUT2", NULL, "Mic Bias"},
 128 };
 129
 130 static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd)
 131 {
 132         struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
 133         int err = 0;
 134
 135         /* set endpoints to not connected */
 136         snd_soc_dapm_nc_pin(dapm, "LINPUT1");
 137         snd_soc_dapm_nc_pin(dapm, "RINPUT1");
 138         snd_soc_dapm_nc_pin(dapm, "OUT3");
 139         snd_soc_dapm_nc_pin(dapm, "ROUT1");
 140
 141         /* Headphone jack detection */
 142         err = snd_soc_card_jack_new(rtd->card, "Headphone Jack",
 143                                     SND_JACK_HEADPHONE, &smartq_jack,
 144                                     smartq_jack_pins,
 145                                     ARRAY_SIZE(smartq_jack_pins));
 146         if (err)
 147                 return err;
 148
 149         err = snd_soc_jack_add_gpios(&smartq_jack,
 150                                      ARRAY_SIZE(smartq_jack_gpios),
 151                                      smartq_jack_gpios);
 152
 153         return err;
 154 }
 155
 156 static struct snd_soc_dai_link smartq_dai[] = {
 157         {
 158                 .name           = "wm8987",
 159                 .stream_name    = "SmartQ Hi-Fi",
 160                 .cpu_dai_name   = "samsung-i2s.0",
 161                 .codec_dai_name = "wm8750-hifi",
 162                 .platform_name  = "samsung-i2s.0",
 163                 .codec_name     = "wm8750.0-0x1a",
 164                 .init           = smartq_wm8987_init,
 165                 .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 166                                   SND_SOC_DAIFMT_CBS_CFS,
 167                 .ops            = &smartq_hifi_ops,
 168         },
 169 };
 170
 171 static struct snd_soc_card snd_soc_smartq = {
 172         .name = "SmartQ",
 173         .owner = THIS_MODULE,
 174         .dai_link = smartq_dai,
 175         .num_links = ARRAY_SIZE(smartq_dai),
 176
 177         .dapm_widgets = wm8987_dapm_widgets,
 178         .num_dapm_widgets = ARRAY_SIZE(wm8987_dapm_widgets),
 179         .dapm_routes = audio_map,
 180         .num_dapm_routes = ARRAY_SIZE(audio_map),
 181         .controls = wm8987_smartq_controls,
 182         .num_controls = ARRAY_SIZE(wm8987_smartq_controls),
 183 };
 184
 185 static int smartq_probe(struct platform_device *pdev)
 186 {
 187         struct gpio_desc *gpio;
 188         int ret;
 189
 190         platform_set_drvdata(pdev, &snd_soc_smartq);
 191
 192         /* Initialise GPIOs used by amplifiers */
 193         gpio = devm_gpiod_get(&pdev->dev, "amplifiers shutdown",
 194                               GPIOD_OUT_HIGH);
 195         if (IS_ERR(gpio)) {
 196                 dev_err(&pdev->dev, "Failed to register GPK12\n");
 197                 ret = PTR_ERR(gpio);
 198                 goto out;
 199         }
 200         snd_soc_card_set_drvdata(&snd_soc_smartq, gpio);
 201
 202         ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_smartq);
 203         if (ret)
 204                 dev_err(&pdev->dev, "Failed to register card\n");
 205
 206 out:
 207         return ret;
 208 }
 209
 210 static struct platform_driver smartq_driver = {
 211         .driver = {
 212                 .name = "smartq-audio",
 213         },
 214         .probe = smartq_probe,
 215 };
 216
 217 module_platform_driver(smartq_driver);
 218
 219 /* Module information */
 220 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
 221 MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
 222 MODULE_LICENSE("GPL");