sound/soc/pxa/spitz.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * spitz.c  --  SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
   4  *
   5  * Copyright 2005 Wolfson Microelectronics PLC.
   6  * Copyright 2005 Openedhand Ltd.
   7  *
   8  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
   9  *          Richard Purdie <richard@openedhand.com>
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/timer.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/gpio/consumer.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/soc.h>
  21
  22 #include <asm/mach-types.h>
  23 #include "../codecs/wm8750.h"
  24 #include "pxa2xx-i2s.h"
  25
  26 #define SPITZ_HP        0
  27 #define SPITZ_MIC       1
  28 #define SPITZ_LINE      2
  29 #define SPITZ_HEADSET   3
  30 #define SPITZ_HP_OFF    4
  31 #define SPITZ_SPK_ON    0
  32 #define SPITZ_SPK_OFF   1
  33
  34  /* audio clock in Hz - rounded from 12.235MHz */
  35 #define SPITZ_AUDIO_CLOCK 12288000
  36
  37 static int spitz_jack_func;
  38 static int spitz_spk_func;
  39 static struct gpio_desc *gpiod_mic, *gpiod_mute_l, *gpiod_mute_r;
  40
  41 static void spitz_ext_control(struct snd_soc_dapm_context *dapm)
  42 {
  43         snd_soc_dapm_mutex_lock(dapm);
  44
  45         if (spitz_spk_func == SPITZ_SPK_ON)
  46                 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
  47         else
  48                 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
  49
  50         /* set up jack connection */
  51         switch (spitz_jack_func) {
  52         case SPITZ_HP:
  53                 /* enable and unmute hp jack, disable mic bias */
  54                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  55                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
  56                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
  57                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  58                 gpiod_set_value(gpiod_mute_l, 1);
  59                 gpiod_set_value(gpiod_mute_r, 1);
  60                 break;
  61         case SPITZ_MIC:
  62                 /* enable mic jack and bias, mute hp */
  63                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  64                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  65                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
  66                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
  67                 gpiod_set_value(gpiod_mute_l, 0);
  68                 gpiod_set_value(gpiod_mute_r, 0);
  69                 break;
  70         case SPITZ_LINE:
  71                 /* enable line jack, disable mic bias and mute hp */
  72                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  73                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  74                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
  75                 snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
  76                 gpiod_set_value(gpiod_mute_l, 0);
  77                 gpiod_set_value(gpiod_mute_r, 0);
  78                 break;
  79         case SPITZ_HEADSET:
  80                 /* enable and unmute headset jack enable mic bias, mute L hp */
  81                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  82                 snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
  83                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
  84                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
  85                 gpiod_set_value(gpiod_mute_l, 0);
  86                 gpiod_set_value(gpiod_mute_r, 1);
  87                 break;
  88         case SPITZ_HP_OFF:
  89
  90                 /* jack removed, everything off */
  91                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  92                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
  93                 snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
  94                 snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
  95                 gpiod_set_value(gpiod_mute_l, 0);
  96                 gpiod_set_value(gpiod_mute_r, 0);
  97                 break;
  98         }
  99
 100         snd_soc_dapm_sync_unlocked(dapm);
 101
 102         snd_soc_dapm_mutex_unlock(dapm);
 103 }
 104
 105 static int spitz_startup(struct snd_pcm_substream *substream)
 106 {
 107         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 108
 109         /* check the jack status at stream startup */
 110         spitz_ext_control(&rtd->card->dapm);
 111
 112         return 0;
 113 }
 114
 115 static int spitz_hw_params(struct snd_pcm_substream *substream,
 116         struct snd_pcm_hw_params *params)
 117 {
 118         struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 119         struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 120         struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 121         unsigned int clk = 0;
 122         int ret = 0;
 123
 124         switch (params_rate(params)) {
 125         case 8000:
 126         case 16000:
 127         case 48000:
 128         case 96000:
 129                 clk = 12288000;
 130                 break;
 131         case 11025:
 132         case 22050:
 133         case 44100:
 134                 clk = 11289600;
 135                 break;
 136         }
 137
 138         /* set the codec system clock for DAC and ADC */
 139         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 140                 SND_SOC_CLOCK_IN);
 141         if (ret < 0)
 142                 return ret;
 143
 144         /* set the I2S system clock as input (unused) */
 145         ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 146                 SND_SOC_CLOCK_IN);
 147         if (ret < 0)
 148                 return ret;
 149
 150         return 0;
 151 }
 152
 153 static const struct snd_soc_ops spitz_ops = {
 154         .startup = spitz_startup,
 155         .hw_params = spitz_hw_params,
 156 };
 157
 158 static int spitz_get_jack(struct snd_kcontrol *kcontrol,
 159         struct snd_ctl_elem_value *ucontrol)
 160 {
 161         ucontrol->value.enumerated.item[0] = spitz_jack_func;
 162         return 0;
 163 }
 164
 165 static int spitz_set_jack(struct snd_kcontrol *kcontrol,
 166         struct snd_ctl_elem_value *ucontrol)
 167 {
 168         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 169
 170         if (spitz_jack_func == ucontrol->value.enumerated.item[0])
 171                 return 0;
 172
 173         spitz_jack_func = ucontrol->value.enumerated.item[0];
 174         spitz_ext_control(&card->dapm);
 175         return 1;
 176 }
 177
 178 static int spitz_get_spk(struct snd_kcontrol *kcontrol,
 179         struct snd_ctl_elem_value *ucontrol)
 180 {
 181         ucontrol->value.enumerated.item[0] = spitz_spk_func;
 182         return 0;
 183 }
 184
 185 static int spitz_set_spk(struct snd_kcontrol *kcontrol,
 186         struct snd_ctl_elem_value *ucontrol)
 187 {
 188         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
 189
 190         if (spitz_spk_func == ucontrol->value.enumerated.item[0])
 191                 return 0;
 192
 193         spitz_spk_func = ucontrol->value.enumerated.item[0];
 194         spitz_ext_control(&card->dapm);
 195         return 1;
 196 }
 197
 198 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 199         struct snd_kcontrol *k, int event)
 200 {
 201         gpiod_set_value_cansleep(gpiod_mic, SND_SOC_DAPM_EVENT_ON(event));
 202         return 0;
 203 }
 204
 205 /* spitz machine dapm widgets */
 206 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 207         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 208         SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 209         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 210         SND_SOC_DAPM_LINE("Line Jack", NULL),
 211
 212         /* headset is a mic and mono headphone */
 213         SND_SOC_DAPM_HP("Headset Jack", NULL),
 214 };
 215
 216 /* Spitz machine audio_map */
 217 static const struct snd_soc_dapm_route spitz_audio_map[] = {
 218
 219         /* headphone connected to LOUT1, ROUT1 */
 220         {"Headphone Jack", NULL, "LOUT1"},
 221         {"Headphone Jack", NULL, "ROUT1"},
 222
 223         /* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 224         {"Headset Jack", NULL, "ROUT1"},
 225
 226         /* ext speaker connected to LOUT2, ROUT2  */
 227         {"Ext Spk", NULL, "ROUT2"},
 228         {"Ext Spk", NULL, "LOUT2"},
 229
 230         /* mic is connected to input 1 - with bias */
 231         {"LINPUT1", NULL, "Mic Bias"},
 232         {"Mic Bias", NULL, "Mic Jack"},
 233
 234         /* line is connected to input 1 - no bias */
 235         {"LINPUT1", NULL, "Line Jack"},
 236 };
 237
 238 static const char * const jack_function[] = {"Headphone", "Mic", "Line",
 239         "Headset", "Off"};
 240 static const char * const spk_function[] = {"On", "Off"};
 241 static const struct soc_enum spitz_enum[] = {
 242         SOC_ENUM_SINGLE_EXT(5, jack_function),
 243         SOC_ENUM_SINGLE_EXT(2, spk_function),
 244 };
 245
 246 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 247         SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 248                 spitz_set_jack),
 249         SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 250                 spitz_set_spk),
 251 };
 252
 253 /* spitz digital audio interface glue - connects codec <--> CPU */
 254 SND_SOC_DAILINK_DEFS(wm8750,
 255         DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")),
 256         DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-001b", "wm8750-hifi")),
 257         DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
 258
 259 static struct snd_soc_dai_link spitz_dai = {
 260         .name = "wm8750",
 261         .stream_name = "WM8750",
 262         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 263                    SND_SOC_DAIFMT_CBS_CFS,
 264         .ops = &spitz_ops,
 265         SND_SOC_DAILINK_REG(wm8750),
 266 };
 267
 268 /* spitz audio machine driver */
 269 static struct snd_soc_card snd_soc_spitz = {
 270         .name = "Spitz",
 271         .owner = THIS_MODULE,
 272         .dai_link = &spitz_dai,
 273         .num_links = 1,
 274
 275         .controls = wm8750_spitz_controls,
 276         .num_controls = ARRAY_SIZE(wm8750_spitz_controls),
 277         .dapm_widgets = wm8750_dapm_widgets,
 278         .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
 279         .dapm_routes = spitz_audio_map,
 280         .num_dapm_routes = ARRAY_SIZE(spitz_audio_map),
 281         .fully_routed = true,
 282 };
 283
 284 static int spitz_probe(struct platform_device *pdev)
 285 {
 286         struct snd_soc_card *card = &snd_soc_spitz;
 287         int ret;
 288
 289         gpiod_mic = devm_gpiod_get(&pdev->dev, "mic", GPIOD_OUT_LOW);
 290         if (IS_ERR(gpiod_mic))
 291                 return PTR_ERR(gpiod_mic);
 292         gpiod_mute_l = devm_gpiod_get(&pdev->dev, "mute-l", GPIOD_OUT_LOW);
 293         if (IS_ERR(gpiod_mute_l))
 294                 return PTR_ERR(gpiod_mute_l);
 295         gpiod_mute_r = devm_gpiod_get(&pdev->dev, "mute-r", GPIOD_OUT_LOW);
 296         if (IS_ERR(gpiod_mute_r))
 297                 return PTR_ERR(gpiod_mute_r);
 298
 299         card->dev = &pdev->dev;
 300
 301         ret = devm_snd_soc_register_card(&pdev->dev, card);
 302         if (ret)
 303                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 304                         ret);
 305
 306         return ret;
 307 }
 308
 309 static struct platform_driver spitz_driver = {
 310         .driver         = {
 311                 .name   = "spitz-audio",
 312                 .pm     = &snd_soc_pm_ops,
 313         },
 314         .probe          = spitz_probe,
 315 };
 316
 317 module_platform_driver(spitz_driver);
 318
 319 MODULE_AUTHOR("Richard Purdie");
 320 MODULE_DESCRIPTION("ALSA SoC Spitz");
 321 MODULE_LICENSE("GPL");
 322 MODULE_ALIAS("platform:spitz-audio");