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.h>
  16 #include <linux/module.h>
  17
  18 #include <sound/soc.h>
  19 #include <sound/jack.h>
  20
  21 #include <mach/gpio-samsung.h>
  22 #include "regs-iis.h"
  23 #include <asm/mach-types.h>
  24
  25 #include "s3c24xx-i2s.h"
  26
  27 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
  28 static int rx1950_startup(struct snd_pcm_substream *substream);
  29 static int rx1950_hw_params(struct snd_pcm_substream *substream,
  30                                 struct snd_pcm_hw_params *params);
  31 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
  32                                 struct snd_kcontrol *kcontrol, int event);
  33
  34 static const unsigned int rates[] = {
  35         16000,
  36         44100,
  37         48000,
  38 };
  39
  40 static const struct snd_pcm_hw_constraint_list hw_rates = {
  41         .count = ARRAY_SIZE(rates),
  42         .list = rates,
  43 };
  44
  45 static struct snd_soc_jack hp_jack;
  46
  47 static struct snd_soc_jack_pin hp_jack_pins[] = {
  48         {
  49                 .pin    = "Headphone Jack",
  50                 .mask   = SND_JACK_HEADPHONE,
  51         },
  52         {
  53                 .pin    = "Speaker",
  54                 .mask   = SND_JACK_HEADPHONE,
  55                 .invert = 1,
  56         },
  57 };
  58
  59 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
  60         [0] = {
  61                 .gpio                   = S3C2410_GPG(12),
  62                 .name                   = "hp-gpio",
  63                 .report                 = SND_JACK_HEADPHONE,
  64                 .invert                 = 1,
  65                 .debounce_time          = 200,
  66         },
  67 };
  68
  69 static struct snd_soc_ops rx1950_ops = {
  70         .startup        = rx1950_startup,
  71         .hw_params      = rx1950_hw_params,
  72 };
  73
  74 /* s3c24xx digital audio interface glue - connects codec <--> CPU */
  75 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
  76         {
  77                 .name           = "uda1380",
  78                 .stream_name    = "UDA1380 Duplex",
  79                 .cpu_dai_name   = "s3c24xx-iis",
  80                 .codec_dai_name = "uda1380-hifi",
  81                 .init           = rx1950_uda1380_init,
  82                 .platform_name  = "s3c24xx-iis",
  83                 .codec_name     = "uda1380-codec.0-001a",
  84                 .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  85                                   SND_SOC_DAIFMT_CBS_CFS,
  86                 .ops            = &rx1950_ops,
  87         },
  88 };
  89
  90 /* rx1950 machine dapm widgets */
  91 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
  92         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  93         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  94         SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
  95 };
  96
  97 /* rx1950 machine audio_map */
  98 static const struct snd_soc_dapm_route audio_map[] = {
  99         /* headphone connected to VOUTLHP, VOUTRHP */
 100         {"Headphone Jack", NULL, "VOUTLHP"},
 101         {"Headphone Jack", NULL, "VOUTRHP"},
 102
 103         /* ext speaker connected to VOUTL, VOUTR  */
 104         {"Speaker", NULL, "VOUTL"},
 105         {"Speaker", NULL, "VOUTR"},
 106
 107         /* mic is connected to VINM */
 108         {"VINM", NULL, "Mic Jack"},
 109 };
 110
 111 static struct snd_soc_card rx1950_asoc = {
 112         .name = "rx1950",
 113         .owner = THIS_MODULE,
 114         .dai_link = rx1950_uda1380_dai,
 115         .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
 116
 117         .dapm_widgets = uda1380_dapm_widgets,
 118         .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
 119         .dapm_routes = audio_map,
 120         .num_dapm_routes = ARRAY_SIZE(audio_map),
 121 };
 122
 123 static struct platform_device *s3c24xx_snd_device;
 124
 125 static int rx1950_startup(struct snd_pcm_substream *substream)
 126 {
 127         struct snd_pcm_runtime *runtime = substream->runtime;
 128
 129         return snd_pcm_hw_constraint_list(runtime, 0,
 130                                         SNDRV_PCM_HW_PARAM_RATE,
 131                                         &hw_rates);
 132 }
 133
 134 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
 135                                 struct snd_kcontrol *kcontrol, int event)
 136 {
 137         if (SND_SOC_DAPM_EVENT_ON(event))
 138                 gpio_set_value(S3C2410_GPA(1), 1);
 139         else
 140                 gpio_set_value(S3C2410_GPA(1), 0);
 141
 142         return 0;
 143 }
 144
 145 static int rx1950_hw_params(struct snd_pcm_substream *substream,
 146                                 struct snd_pcm_hw_params *params)
 147 {
 148         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 149         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 150         int div;
 151         int ret;
 152         unsigned int rate = params_rate(params);
 153         int clk_source, fs_mode;
 154
 155         switch (rate) {
 156         case 16000:
 157         case 48000:
 158                 clk_source = S3C24XX_CLKSRC_PCLK;
 159                 fs_mode = S3C2410_IISMOD_256FS;
 160                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 161                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 162                         div++;
 163                 break;
 164         case 44100:
 165         case 88200:
 166                 clk_source = S3C24XX_CLKSRC_MPLL;
 167                 fs_mode = S3C2410_IISMOD_384FS;
 168                 div = 1;
 169                 break;
 170         default:
 171                 printk(KERN_ERR "%s: rate %d is not supported\n",
 172                         __func__, rate);
 173                 return -EINVAL;
 174         }
 175
 176         /* select clock source */
 177         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 178                         SND_SOC_CLOCK_OUT);
 179         if (ret < 0)
 180                 return ret;
 181
 182         /* set MCLK division for sample rate */
 183         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 184                 fs_mode);
 185         if (ret < 0)
 186                 return ret;
 187
 188         /* set BCLK division for sample rate */
 189         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 190                 S3C2410_IISMOD_32FS);
 191         if (ret < 0)
 192                 return ret;
 193
 194         /* set prescaler division for sample rate */
 195         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 196                 S3C24XX_PRESCALE(div, div));
 197         if (ret < 0)
 198                 return ret;
 199
 200         return 0;
 201 }
 202
 203 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 204 {
 205         snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
 206                 &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
 207
 208         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 209                 hp_jack_gpios);
 210
 211         return 0;
 212 }
 213
 214 static int __init rx1950_init(void)
 215 {
 216         int ret;
 217
 218         if (!machine_is_rx1950())
 219                 return -ENODEV;
 220
 221         /* configure some gpios */
 222         ret = gpio_request(S3C2410_GPA(1), "speaker-power");
 223         if (ret)
 224                 goto err_gpio;
 225
 226         ret = gpio_direction_output(S3C2410_GPA(1), 0);
 227         if (ret)
 228                 goto err_gpio_conf;
 229
 230         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 231         if (!s3c24xx_snd_device) {
 232                 ret = -ENOMEM;
 233                 goto err_plat_alloc;
 234         }
 235
 236         platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
 237         ret = platform_device_add(s3c24xx_snd_device);
 238
 239         if (ret) {
 240                 platform_device_put(s3c24xx_snd_device);
 241                 goto err_plat_add;
 242         }
 243
 244         return 0;
 245
 246 err_plat_add:
 247 err_plat_alloc:
 248 err_gpio_conf:
 249         gpio_free(S3C2410_GPA(1));
 250
 251 err_gpio:
 252         return ret;
 253 }
 254
 255 static void __exit rx1950_exit(void)
 256 {
 257         platform_device_unregister(s3c24xx_snd_device);
 258         gpio_free(S3C2410_GPA(1));
 259 }
 260
 261 module_init(rx1950_init);
 262 module_exit(rx1950_exit);
 263
 264 /* Module information */
 265 MODULE_AUTHOR("Vasily Khoruzhick");
 266 MODULE_DESCRIPTION("ALSA SoC RX1950");
 267 MODULE_LICENSE("GPL");