sound/soc/samsung/rx1950_uda1380.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // rx1950.c - ALSA SoC Audio Layer
   4 //
   5 // Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
   6 //
   7 // Based on smdk2440.c and magician.c
   8 //
   9 // Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com
  10 //          Philipp Zabel <philipp.zabel@gmail.com>
  11 //          Denis Grigoriev <dgreenday@gmail.com>
  12 //          Vasily Khoruzhick <anarsoul@gmail.com>
  13
  14 #include <linux/types.h>
  15 #include <linux/gpio/consumer.h>
  16 #include <linux/module.h>
  17
  18 #include <sound/soc.h>
  19 #include <sound/jack.h>
  20
  21 #include "regs-iis.h"
  22 #include "s3c24xx-i2s.h"
  23
  24 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
  25 static int rx1950_startup(struct snd_pcm_substream *substream);
  26 static int rx1950_hw_params(struct snd_pcm_substream *substream,
  27                                 struct snd_pcm_hw_params *params);
  28 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
  29                                 struct snd_kcontrol *kcontrol, int event);
  30
  31 static const unsigned int rates[] = {
  32         16000,
  33         44100,
  34         48000,
  35 };
  36
  37 static const struct snd_pcm_hw_constraint_list hw_rates = {
  38         .count = ARRAY_SIZE(rates),
  39         .list = rates,
  40 };
  41
  42 static struct snd_soc_jack hp_jack;
  43
  44 static struct snd_soc_jack_pin hp_jack_pins[] = {
  45         {
  46                 .pin    = "Headphone Jack",
  47                 .mask   = SND_JACK_HEADPHONE,
  48         },
  49         {
  50                 .pin    = "Speaker",
  51                 .mask   = SND_JACK_HEADPHONE,
  52                 .invert = 1,
  53         },
  54 };
  55
  56 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
  57         [0] = {
  58                 .name                   = "hp-gpio",
  59                 .report                 = SND_JACK_HEADPHONE,
  60                 .invert                 = 1,
  61                 .debounce_time          = 200,
  62         },
  63 };
  64
  65 static struct snd_soc_ops rx1950_ops = {
  66         .startup        = rx1950_startup,
  67         .hw_params      = rx1950_hw_params,
  68 };
  69
  70 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
  71 SND_SOC_DAILINK_DEFS(uda1380,
  72         DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
  73         DAILINK_COMP_ARRAY(COMP_CODEC("uda1380-codec.0-001a",
  74                                       "uda1380-hifi")),
  75         DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
  76
  77 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
  78         {
  79                 .name           = "uda1380",
  80                 .stream_name    = "UDA1380 Duplex",
  81                 .init           = rx1950_uda1380_init,
  82                 .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  83                                   SND_SOC_DAIFMT_CBS_CFS,
  84                 .ops            = &rx1950_ops,
  85                 SND_SOC_DAILINK_REG(uda1380),
  86         },
  87 };
  88
  89 /* rx1950 machine dapm widgets */
  90 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
  91         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  92         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  93         SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
  94 };
  95
  96 /* rx1950 machine audio_map */
  97 static const struct snd_soc_dapm_route audio_map[] = {
  98         /* headphone connected to VOUTLHP, VOUTRHP */
  99         {"Headphone Jack", NULL, "VOUTLHP"},
 100         {"Headphone Jack", NULL, "VOUTRHP"},
 101
 102         /* ext speaker connected to VOUTL, VOUTR  */
 103         {"Speaker", NULL, "VOUTL"},
 104         {"Speaker", NULL, "VOUTR"},
 105
 106         /* mic is connected to VINM */
 107         {"VINM", NULL, "Mic Jack"},
 108 };
 109
 110 static struct snd_soc_card rx1950_asoc = {
 111         .name = "rx1950",
 112         .owner = THIS_MODULE,
 113         .dai_link = rx1950_uda1380_dai,
 114         .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
 115
 116         .dapm_widgets = uda1380_dapm_widgets,
 117         .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
 118         .dapm_routes = audio_map,
 119         .num_dapm_routes = ARRAY_SIZE(audio_map),
 120 };
 121
 122 static int rx1950_startup(struct snd_pcm_substream *substream)
 123 {
 124         struct snd_pcm_runtime *runtime = substream->runtime;
 125
 126         return snd_pcm_hw_constraint_list(runtime, 0,
 127                                         SNDRV_PCM_HW_PARAM_RATE,
 128                                         &hw_rates);
 129 }
 130
 131 struct gpio_desc *gpiod_speaker_power;
 132
 133 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
 134                                 struct snd_kcontrol *kcontrol, int event)
 135 {
 136         if (SND_SOC_DAPM_EVENT_ON(event))
 137                 gpiod_set_value(gpiod_speaker_power, 1);
 138         else
 139                 gpiod_set_value(gpiod_speaker_power, 0);
 140
 141         return 0;
 142 }
 143
 144 static int rx1950_hw_params(struct snd_pcm_substream *substream,
 145                                 struct snd_pcm_hw_params *params)
 146 {
 147         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 148         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 149         int div;
 150         int ret;
 151         unsigned int rate = params_rate(params);
 152         int clk_source, fs_mode;
 153
 154         switch (rate) {
 155         case 16000:
 156         case 48000:
 157                 clk_source = S3C24XX_CLKSRC_PCLK;
 158                 fs_mode = S3C2410_IISMOD_256FS;
 159                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 160                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 161                         div++;
 162                 break;
 163         case 44100:
 164         case 88200:
 165                 clk_source = S3C24XX_CLKSRC_MPLL;
 166                 fs_mode = S3C2410_IISMOD_384FS;
 167                 div = 1;
 168                 break;
 169         default:
 170                 printk(KERN_ERR "%s: rate %d is not supported\n",
 171                         __func__, rate);
 172                 return -EINVAL;
 173         }
 174
 175         /* select clock source */
 176         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 177                         SND_SOC_CLOCK_OUT);
 178         if (ret < 0)
 179                 return ret;
 180
 181         /* set MCLK division for sample rate */
 182         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 183                 fs_mode);
 184         if (ret < 0)
 185                 return ret;
 186
 187         /* set BCLK division for sample rate */
 188         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 189                 S3C2410_IISMOD_32FS);
 190         if (ret < 0)
 191                 return ret;
 192
 193         /* set prescaler division for sample rate */
 194         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 195                 S3C24XX_PRESCALE(div, div));
 196         if (ret < 0)
 197                 return ret;
 198
 199         return 0;
 200 }
 201
 202 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 203 {
 204         snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
 205                 &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
 206
 207         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 208                 hp_jack_gpios);
 209
 210         return 0;
 211 }
 212
 213 static int rx1950_probe(struct platform_device *pdev)
 214 {
 215         struct device *dev = &pdev->dev;
 216
 217         /* configure some gpios */
 218         gpiod_speaker_power = devm_gpiod_get(dev, "speaker-power", GPIOD_OUT_LOW);
 219         if (IS_ERR(gpiod_speaker_power)) {
 220                 dev_err(dev, "cannot get gpio\n");
 221                 return PTR_ERR(gpiod_speaker_power);
 222         }
 223
 224         hp_jack_gpios[0].gpiod_dev = dev;
 225         rx1950_asoc.dev = dev;
 226
 227         return devm_snd_soc_register_card(dev, &rx1950_asoc);
 228 }
 229
 230 struct platform_driver rx1950_audio = {
 231         .driver = {
 232                 .name = "rx1950-audio",
 233                 .pm = &snd_soc_pm_ops,
 234         },
 235         .probe = rx1950_probe,
 236 };
 237
 238 module_platform_driver(rx1950_audio);
 239
 240 /* Module information */
 241 MODULE_AUTHOR("Vasily Khoruzhick");
 242 MODULE_DESCRIPTION("ALSA SoC RX1950");
 243 MODULE_LICENSE("GPL");
 244 MODULE_ALIAS("platform:rx1950-audio");