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 SND_SOC_DAILINK_DEFS(uda1380,
  76         DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
  77         DAILINK_COMP_ARRAY(COMP_CODEC("uda1380-codec.0-001a",
  78                                       "uda1380-hifi")),
  79         DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
  80
  81 static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
  82         {
  83                 .name           = "uda1380",
  84                 .stream_name    = "UDA1380 Duplex",
  85                 .init           = rx1950_uda1380_init,
  86                 .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  87                                   SND_SOC_DAIFMT_CBS_CFS,
  88                 .ops            = &rx1950_ops,
  89                 SND_SOC_DAILINK_REG(uda1380),
  90         },
  91 };
  92
  93 /* rx1950 machine dapm widgets */
  94 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
  95         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  96         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  97         SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
  98 };
  99
 100 /* rx1950 machine audio_map */
 101 static const struct snd_soc_dapm_route audio_map[] = {
 102         /* headphone connected to VOUTLHP, VOUTRHP */
 103         {"Headphone Jack", NULL, "VOUTLHP"},
 104         {"Headphone Jack", NULL, "VOUTRHP"},
 105
 106         /* ext speaker connected to VOUTL, VOUTR  */
 107         {"Speaker", NULL, "VOUTL"},
 108         {"Speaker", NULL, "VOUTR"},
 109
 110         /* mic is connected to VINM */
 111         {"VINM", NULL, "Mic Jack"},
 112 };
 113
 114 static struct snd_soc_card rx1950_asoc = {
 115         .name = "rx1950",
 116         .owner = THIS_MODULE,
 117         .dai_link = rx1950_uda1380_dai,
 118         .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
 119
 120         .dapm_widgets = uda1380_dapm_widgets,
 121         .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
 122         .dapm_routes = audio_map,
 123         .num_dapm_routes = ARRAY_SIZE(audio_map),
 124 };
 125
 126 static struct platform_device *s3c24xx_snd_device;
 127
 128 static int rx1950_startup(struct snd_pcm_substream *substream)
 129 {
 130         struct snd_pcm_runtime *runtime = substream->runtime;
 131
 132         return snd_pcm_hw_constraint_list(runtime, 0,
 133                                         SNDRV_PCM_HW_PARAM_RATE,
 134                                         &hw_rates);
 135 }
 136
 137 static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
 138                                 struct snd_kcontrol *kcontrol, int event)
 139 {
 140         if (SND_SOC_DAPM_EVENT_ON(event))
 141                 gpio_set_value(S3C2410_GPA(1), 1);
 142         else
 143                 gpio_set_value(S3C2410_GPA(1), 0);
 144
 145         return 0;
 146 }
 147
 148 static int rx1950_hw_params(struct snd_pcm_substream *substream,
 149                                 struct snd_pcm_hw_params *params)
 150 {
 151         struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 152         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 153         int div;
 154         int ret;
 155         unsigned int rate = params_rate(params);
 156         int clk_source, fs_mode;
 157
 158         switch (rate) {
 159         case 16000:
 160         case 48000:
 161                 clk_source = S3C24XX_CLKSRC_PCLK;
 162                 fs_mode = S3C2410_IISMOD_256FS;
 163                 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
 164                 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
 165                         div++;
 166                 break;
 167         case 44100:
 168         case 88200:
 169                 clk_source = S3C24XX_CLKSRC_MPLL;
 170                 fs_mode = S3C2410_IISMOD_384FS;
 171                 div = 1;
 172                 break;
 173         default:
 174                 printk(KERN_ERR "%s: rate %d is not supported\n",
 175                         __func__, rate);
 176                 return -EINVAL;
 177         }
 178
 179         /* select clock source */
 180         ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
 181                         SND_SOC_CLOCK_OUT);
 182         if (ret < 0)
 183                 return ret;
 184
 185         /* set MCLK division for sample rate */
 186         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
 187                 fs_mode);
 188         if (ret < 0)
 189                 return ret;
 190
 191         /* set BCLK division for sample rate */
 192         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
 193                 S3C2410_IISMOD_32FS);
 194         if (ret < 0)
 195                 return ret;
 196
 197         /* set prescaler division for sample rate */
 198         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
 199                 S3C24XX_PRESCALE(div, div));
 200         if (ret < 0)
 201                 return ret;
 202
 203         return 0;
 204 }
 205
 206 static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
 207 {
 208         snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
 209                 &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
 210
 211         snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 212                 hp_jack_gpios);
 213
 214         return 0;
 215 }
 216
 217 static int __init rx1950_init(void)
 218 {
 219         int ret;
 220
 221         if (!machine_is_rx1950())
 222                 return -ENODEV;
 223
 224         /* configure some gpios */
 225         ret = gpio_request(S3C2410_GPA(1), "speaker-power");
 226         if (ret)
 227                 goto err_gpio;
 228
 229         ret = gpio_direction_output(S3C2410_GPA(1), 0);
 230         if (ret)
 231                 goto err_gpio_conf;
 232
 233         s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
 234         if (!s3c24xx_snd_device) {
 235                 ret = -ENOMEM;
 236                 goto err_plat_alloc;
 237         }
 238
 239         platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
 240         ret = platform_device_add(s3c24xx_snd_device);
 241
 242         if (ret) {
 243                 platform_device_put(s3c24xx_snd_device);
 244                 goto err_plat_add;
 245         }
 246
 247         return 0;
 248
 249 err_plat_add:
 250 err_plat_alloc:
 251 err_gpio_conf:
 252         gpio_free(S3C2410_GPA(1));
 253
 254 err_gpio:
 255         return ret;
 256 }
 257
 258 static void __exit rx1950_exit(void)
 259 {
 260         platform_device_unregister(s3c24xx_snd_device);
 261         gpio_free(S3C2410_GPA(1));
 262 }
 263
 264 module_init(rx1950_init);
 265 module_exit(rx1950_exit);
 266
 267 /* Module information */
 268 MODULE_AUTHOR("Vasily Khoruzhick");
 269 MODULE_DESCRIPTION("ALSA SoC RX1950");
 270 MODULE_LICENSE("GPL");