sound/soc/samsung/h1940_uda1380.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // h1940_uda1380.c - ALSA SoC Audio Layer
   4 //
   5 // Copyright (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
   6 // Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
   7 //
   8 // Based on version from Arnaud Patard <arnaud.patard@rtp-net.org>
   9
  10 #include <linux/types.h>
  11 #include <linux/gpio.h>
  12 #include <linux/module.h>
  13
  14 #include <sound/soc.h>
  15 #include <sound/jack.h>
  16
  17 #include "regs-iis.h"
  18 #include <asm/mach-types.h>
  19
  20 #include <mach/gpio-samsung.h>
  21 #include "s3c24xx-i2s.h"
  22
  23 static const unsigned int rates[] = {
  24         11025,
  25         22050,
  26         44100,
  27 };
  28
  29 static const struct snd_pcm_hw_constraint_list hw_rates = {
  30         .count = ARRAY_SIZE(rates),
  31         .list = rates,
  32 };
  33
  34 static struct snd_soc_jack hp_jack;
  35
  36 static struct snd_soc_jack_pin hp_jack_pins[] = {
  37         {
  38                 .pin    = "Headphone Jack",
  39                 .mask   = SND_JACK_HEADPHONE,
  40         },
  41         {
  42                 .pin    = "Speaker",
  43                 .mask   = SND_JACK_HEADPHONE,
  44                 .invert = 1,
  45         },
  46 };
  47
  48 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
  49         {
  50                 .gpio                   = S3C2410_GPG(4),
  51                 .name                   = "hp-gpio",
  52                 .report                 = SND_JACK_HEADPHONE,
  53                 .invert                 = 1,
  54                 .debounce_time          = 200,
  55         },
  56 };
  57
  58 static int h1940_startup(struct snd_pcm_substream *substream)
  59 {
  60         struct snd_pcm_runtime *runtime = substream->runtime;
  61
  62         return snd_pcm_hw_constraint_list(runtime, 0,
  63                                         SNDRV_PCM_HW_PARAM_RATE,
  64                                         &hw_rates);
  65 }
  66
  67 static int h1940_hw_params(struct snd_pcm_substream *substream,
  68                                 struct snd_pcm_hw_params *params)
  69 {
  70         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  71         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  72         int div;
  73         int ret;
  74         unsigned int rate = params_rate(params);
  75
  76         switch (rate) {
  77         case 11025:
  78         case 22050:
  79         case 44100:
  80                 div = s3c24xx_i2s_get_clockrate() / (384 * rate);
  81                 if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate))
  82                         div++;
  83                 break;
  84         default:
  85                 dev_err(rtd->dev, "%s: rate %d is not supported\n",
  86                         __func__, rate);
  87                 return -EINVAL;
  88         }
  89
  90         /* select clock source */
  91         ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate,
  92                         SND_SOC_CLOCK_OUT);
  93         if (ret < 0)
  94                 return ret;
  95
  96         /* set MCLK division for sample rate */
  97         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
  98                 S3C2410_IISMOD_384FS);
  99         if (ret < 0)
 100                 return ret;
 101
 102         /* set BCLK division for sample rate */
 103         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 104                 S3C2410_IISMOD_32FS);
 105         if (ret < 0)
 106                 return ret;
 107
 108         /* set prescaler division for sample rate */
 109         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 110                 S3C24XX_PRESCALE(div, div));
 111         if (ret < 0)
 112                 return ret;
 113
 114         return 0;
 115 }
 116
 117 static struct snd_soc_ops h1940_ops = {
 118         .startup        = h1940_startup,
 119         .hw_params      = h1940_hw_params,
 120 };
 121
 122 static int h1940_spk_power(struct snd_soc_dapm_widget *w,
 123                                 struct snd_kcontrol *kcontrol, int event)
 124 {
 125         if (SND_SOC_DAPM_EVENT_ON(event))
 126                 gpio_set_value(S3C_GPIO_END + 9, 1);
 127         else
 128                 gpio_set_value(S3C_GPIO_END + 9, 0);
 129
 130         return 0;
 131 }
 132
 133 /* h1940 machine dapm widgets */
 134 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
 135         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 136         SND_SOC_DAPM_MIC("Mic Jack", NULL),
 137         SND_SOC_DAPM_SPK("Speaker", h1940_spk_power),
 138 };
 139
 140 /* h1940 machine audio_map */
 141 static const struct snd_soc_dapm_route audio_map[] = {
 142         /* headphone connected to VOUTLHP, VOUTRHP */
 143         {"Headphone Jack", NULL, "VOUTLHP"},
 144         {"Headphone Jack", NULL, "VOUTRHP"},
 145
 146         /* ext speaker connected to VOUTL, VOUTR  */
 147         {"Speaker", NULL, "VOUTL"},
 148         {"Speaker", NULL, "VOUTR"},
 149
 150         /* mic is connected to VINM */
 151         {"VINM", NULL, "Mic Jack"},
 152 };
 153
 154 static struct platform_device *s3c24xx_snd_device;
 155
 156 static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 157 {
 158         snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
 159                 &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
 160
 161         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 162                 hp_jack_gpios);
 163
 164         return 0;
 165 }
 166
 167 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
 168 SND_SOC_DAILINK_DEFS(uda1380,
 169         DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
 170         DAILINK_COMP_ARRAY(COMP_CODEC("uda1380-codec.0-001a", "uda1380-hifi")),
 171         DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
 172
 173 static struct snd_soc_dai_link h1940_uda1380_dai[] = {
 174         {
 175                 .name           = "uda1380",
 176                 .stream_name    = "UDA1380 Duplex",
 177                 .init           = h1940_uda1380_init,
 178                 .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 179                                   SND_SOC_DAIFMT_CBS_CFS,
 180                 .ops            = &h1940_ops,
 181                 SND_SOC_DAILINK_REG(uda1380),
 182         },
 183 };
 184
 185 static struct snd_soc_card h1940_asoc = {
 186         .name = "h1940",
 187         .owner = THIS_MODULE,
 188         .dai_link = h1940_uda1380_dai,
 189         .num_links = ARRAY_SIZE(h1940_uda1380_dai),
 190
 191         .dapm_widgets = uda1380_dapm_widgets,
 192         .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
 193         .dapm_routes = audio_map,
 194         .num_dapm_routes = ARRAY_SIZE(audio_map),
 195 };
 196
 197 static int __init h1940_init(void)
 198 {
 199         int ret;
 200
 201         if (!machine_is_h1940())
 202                 return -ENODEV;
 203
 204         /* configure some gpios */
 205         ret = gpio_request(S3C_GPIO_END + 9, "speaker-power");
 206         if (ret)
 207                 goto err_out;
 208
 209         ret = gpio_direction_output(S3C_GPIO_END + 9, 0);
 210         if (ret)
 211                 goto err_gpio;
 212
 213         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 214         if (!s3c24xx_snd_device) {
 215                 ret = -ENOMEM;
 216                 goto err_gpio;
 217         }
 218
 219         platform_set_drvdata(s3c24xx_snd_device, &h1940_asoc);
 220         ret = platform_device_add(s3c24xx_snd_device);
 221
 222         if (ret)
 223                 goto err_plat;
 224
 225         return 0;
 226
 227 err_plat:
 228         platform_device_put(s3c24xx_snd_device);
 229 err_gpio:
 230         gpio_free(S3C_GPIO_END + 9);
 231
 232 err_out:
 233         return ret;
 234 }
 235
 236 static void __exit h1940_exit(void)
 237 {
 238         platform_device_unregister(s3c24xx_snd_device);
 239         gpio_free(S3C_GPIO_END + 9);
 240 }
 241
 242 module_init(h1940_init);
 243 module_exit(h1940_exit);
 244
 245 /* Module information */
 246 MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick");
 247 MODULE_DESCRIPTION("ALSA SoC H1940");
 248 MODULE_LICENSE("GPL");