sound/soc/omap/rx51.c

   1 /*
   2  * rx51.c  --  SoC audio for Nokia RX-51
   3  *
   4  * Copyright (C) 2008 - 2009 Nokia Corporation
   5  *
   6  * Contact: Peter Ujfalusi <peter.ujfalusi@nokia.com>
   7  *          Eduardo Valentin <eduardo.valentin@nokia.com>
   8  *          Jarkko Nikula <jhnikula@gmail.com>
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * version 2 as published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  22  * 02110-1301 USA
  23  *
  24  */
  25
  26 #include <linux/delay.h>
  27 #include <linux/gpio.h>
  28 #include <linux/platform_device.h>
  29 #include <sound/core.h>
  30 #include <sound/jack.h>
  31 #include <sound/pcm.h>
  32 #include <sound/soc.h>
  33 #include <plat/mcbsp.h>
  34
  35 #include <asm/mach-types.h>
  36
  37 #include "omap-mcbsp.h"
  38 #include "omap-pcm.h"
  39
  40 #define RX51_TVOUT_SEL_GPIO             40
  41 #define RX51_JACK_DETECT_GPIO           177
  42 /*
  43  * REVISIT: TWL4030 GPIO base in RX-51. Now statically defined to 192. This
  44  * gpio is reserved in arch/arm/mach-omap2/board-rx51-peripherals.c
  45  */
  46 #define RX51_SPEAKER_AMP_TWL_GPIO       (192 + 7)
  47
  48 enum {
  49         RX51_JACK_DISABLED,
  50         RX51_JACK_TVOUT,                /* tv-out */
  51 };
  52
  53 static int rx51_spk_func;
  54 static int rx51_dmic_func;
  55 static int rx51_jack_func;
  56
  57 static void rx51_ext_control(struct snd_soc_codec *codec)
  58 {
  59         struct snd_soc_dapm_context *dapm = &codec->dapm;
  60
  61         if (rx51_spk_func)
  62                 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
  63         else
  64                 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
  65         if (rx51_dmic_func)
  66                 snd_soc_dapm_enable_pin(dapm, "DMic");
  67         else
  68                 snd_soc_dapm_disable_pin(dapm, "DMic");
  69
  70         gpio_set_value(RX51_TVOUT_SEL_GPIO,
  71                        rx51_jack_func == RX51_JACK_TVOUT);
  72
  73         snd_soc_dapm_sync(dapm);
  74 }
  75
  76 static int rx51_startup(struct snd_pcm_substream *substream)
  77 {
  78         struct snd_pcm_runtime *runtime = substream->runtime;
  79         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  80         struct snd_soc_codec *codec = rtd->codec;
  81
  82         snd_pcm_hw_constraint_minmax(runtime,
  83                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
  84         rx51_ext_control(codec);
  85
  86         return 0;
  87 }
  88
  89 static int rx51_hw_params(struct snd_pcm_substream *substream,
  90         struct snd_pcm_hw_params *params)
  91 {
  92         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  93         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  94         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  95         int err;
  96
  97         /* Set codec DAI configuration */
  98         err = snd_soc_dai_set_fmt(codec_dai,
  99                                   SND_SOC_DAIFMT_DSP_A |
 100                                   SND_SOC_DAIFMT_IB_NF |
 101                                   SND_SOC_DAIFMT_CBM_CFM);
 102         if (err < 0)
 103                 return err;
 104
 105         /* Set cpu DAI configuration */
 106         err = snd_soc_dai_set_fmt(cpu_dai,
 107                                   SND_SOC_DAIFMT_DSP_A |
 108                                   SND_SOC_DAIFMT_IB_NF |
 109                                   SND_SOC_DAIFMT_CBM_CFM);
 110         if (err < 0)
 111                 return err;
 112
 113         /* Set the codec system clock for DAC and ADC */
 114         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
 115                                       SND_SOC_CLOCK_IN);
 116 }
 117
 118 static struct snd_soc_ops rx51_ops = {
 119         .startup = rx51_startup,
 120         .hw_params = rx51_hw_params,
 121 };
 122
 123 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
 124                         struct snd_ctl_elem_value *ucontrol)
 125 {
 126         ucontrol->value.integer.value[0] = rx51_spk_func;
 127
 128         return 0;
 129 }
 130
 131 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
 132                         struct snd_ctl_elem_value *ucontrol)
 133 {
 134         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 135
 136         if (rx51_spk_func == ucontrol->value.integer.value[0])
 137                 return 0;
 138
 139         rx51_spk_func = ucontrol->value.integer.value[0];
 140         rx51_ext_control(codec);
 141
 142         return 1;
 143 }
 144
 145 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
 146                           struct snd_kcontrol *k, int event)
 147 {
 148         if (SND_SOC_DAPM_EVENT_ON(event))
 149                 gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 1);
 150         else
 151                 gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 0);
 152
 153         return 0;
 154 }
 155
 156 static int rx51_get_input(struct snd_kcontrol *kcontrol,
 157                           struct snd_ctl_elem_value *ucontrol)
 158 {
 159         ucontrol->value.integer.value[0] = rx51_dmic_func;
 160
 161         return 0;
 162 }
 163
 164 static int rx51_set_input(struct snd_kcontrol *kcontrol,
 165                           struct snd_ctl_elem_value *ucontrol)
 166 {
 167         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 168
 169         if (rx51_dmic_func == ucontrol->value.integer.value[0])
 170                 return 0;
 171
 172         rx51_dmic_func = ucontrol->value.integer.value[0];
 173         rx51_ext_control(codec);
 174
 175         return 1;
 176 }
 177
 178 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
 179                          struct snd_ctl_elem_value *ucontrol)
 180 {
 181         ucontrol->value.integer.value[0] = rx51_jack_func;
 182
 183         return 0;
 184 }
 185
 186 static int rx51_set_jack(struct snd_kcontrol *kcontrol,
 187                          struct snd_ctl_elem_value *ucontrol)
 188 {
 189         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 190
 191         if (rx51_jack_func == ucontrol->value.integer.value[0])
 192                 return 0;
 193
 194         rx51_jack_func = ucontrol->value.integer.value[0];
 195         rx51_ext_control(codec);
 196
 197         return 1;
 198 }
 199
 200 static struct snd_soc_jack rx51_av_jack;
 201
 202 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
 203         {
 204                 .gpio = RX51_JACK_DETECT_GPIO,
 205                 .name = "avdet-gpio",
 206                 .report = SND_JACK_VIDEOOUT,
 207                 .invert = 1,
 208                 .debounce_time = 200,
 209         },
 210 };
 211
 212 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
 213         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
 214         SND_SOC_DAPM_MIC("DMic", NULL),
 215 };
 216
 217 static const struct snd_soc_dapm_route audio_map[] = {
 218         {"Ext Spk", NULL, "HPLOUT"},
 219         {"Ext Spk", NULL, "HPROUT"},
 220
 221         {"DMic Rate 64", NULL, "Mic Bias 2V"},
 222         {"Mic Bias 2V", NULL, "DMic"},
 223 };
 224
 225 static const char *spk_function[] = {"Off", "On"};
 226 static const char *input_function[] = {"ADC", "Digital Mic"};
 227 static const char *jack_function[] = {"Off", "TV-OUT"};
 228
 229 static const struct soc_enum rx51_enum[] = {
 230         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 231         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 232         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 233 };
 234
 235 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
 236         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
 237                      rx51_get_spk, rx51_set_spk),
 238         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
 239                      rx51_get_input, rx51_set_input),
 240         SOC_ENUM_EXT("Jack Function", rx51_enum[2],
 241                      rx51_get_jack, rx51_set_jack),
 242 };
 243
 244 static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
 245 {
 246         struct snd_soc_codec *codec = rtd->codec;
 247         struct snd_soc_dapm_context *dapm = &codec->dapm;
 248         int err;
 249
 250         /* Set up NC codec pins */
 251         snd_soc_dapm_nc_pin(dapm, "MIC3L");
 252         snd_soc_dapm_nc_pin(dapm, "MIC3R");
 253         snd_soc_dapm_nc_pin(dapm, "LINE1R");
 254
 255         /* Add RX-51 specific controls */
 256         err = snd_soc_add_controls(codec, aic34_rx51_controls,
 257                                    ARRAY_SIZE(aic34_rx51_controls));
 258         if (err < 0)
 259                 return err;
 260
 261         /* Add RX-51 specific widgets */
 262         snd_soc_dapm_new_controls(dapm, aic34_dapm_widgets,
 263                                   ARRAY_SIZE(aic34_dapm_widgets));
 264
 265         /* Set up RX-51 specific audio path audio_map */
 266         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 267
 268         snd_soc_dapm_sync(dapm);
 269
 270         /* AV jack detection */
 271         err = snd_soc_jack_new(codec, "AV Jack",
 272                                SND_JACK_VIDEOOUT, &rx51_av_jack);
 273         if (err)
 274                 return err;
 275         err = snd_soc_jack_add_gpios(&rx51_av_jack,
 276                                      ARRAY_SIZE(rx51_av_jack_gpios),
 277                                      rx51_av_jack_gpios);
 278
 279         return err;
 280 }
 281
 282 /* Digital audio interface glue - connects codec <--> CPU */
 283 static struct snd_soc_dai_link rx51_dai[] = {
 284         {
 285                 .name = "TLV320AIC34",
 286                 .stream_name = "AIC34",
 287                 .cpu_dai_name = "omap-mcbsp-dai.1",
 288                 .codec_dai_name = "tlv320aic3x-hifi",
 289                 .platform_name = "omap-pcm-audio",
 290                 .codec_name = "tlv320aic3x-codec.2-0018",
 291                 .init = rx51_aic34_init,
 292                 .ops = &rx51_ops,
 293         },
 294 };
 295
 296 /* Audio card */
 297 static struct snd_soc_card rx51_sound_card = {
 298         .name = "RX-51",
 299         .dai_link = rx51_dai,
 300         .num_links = ARRAY_SIZE(rx51_dai),
 301 };
 302
 303 static struct platform_device *rx51_snd_device;
 304
 305 static int __init rx51_soc_init(void)
 306 {
 307         int err;
 308
 309         if (!machine_is_nokia_rx51())
 310                 return -ENODEV;
 311
 312         err = gpio_request(RX51_TVOUT_SEL_GPIO, "tvout_sel");
 313         if (err)
 314                 goto err_gpio_tvout_sel;
 315         gpio_direction_output(RX51_TVOUT_SEL_GPIO, 0);
 316
 317         rx51_snd_device = platform_device_alloc("soc-audio", -1);
 318         if (!rx51_snd_device) {
 319                 err = -ENOMEM;
 320                 goto err1;
 321         }
 322
 323         platform_set_drvdata(rx51_snd_device, &rx51_sound_card);
 324
 325         err = platform_device_add(rx51_snd_device);
 326         if (err)
 327                 goto err2;
 328
 329         return 0;
 330 err2:
 331         platform_device_put(rx51_snd_device);
 332 err1:
 333         gpio_free(RX51_TVOUT_SEL_GPIO);
 334 err_gpio_tvout_sel:
 335
 336         return err;
 337 }
 338
 339 static void __exit rx51_soc_exit(void)
 340 {
 341         snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
 342                                 rx51_av_jack_gpios);
 343
 344         platform_device_unregister(rx51_snd_device);
 345         gpio_free(RX51_TVOUT_SEL_GPIO);
 346 }
 347
 348 module_init(rx51_soc_init);
 349 module_exit(rx51_soc_exit);
 350
 351 MODULE_AUTHOR("Nokia Corporation");
 352 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
 353 MODULE_LICENSE("GPL");