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 <sound/soc-dapm.h>
  34
  35 #include <asm/mach-types.h>
  36
  37 #include "omap-mcbsp.h"
  38 #include "omap-pcm.h"
  39 #include "../codecs/tlv320aic3x.h"
  40
  41 #define RX51_TVOUT_SEL_GPIO             40
  42 #define RX51_JACK_DETECT_GPIO           177
  43 /*
  44  * REVISIT: TWL4030 GPIO base in RX-51. Now statically defined to 192. This
  45  * gpio is reserved in arch/arm/mach-omap2/board-rx51-peripherals.c
  46  */
  47 #define RX51_SPEAKER_AMP_TWL_GPIO       (192 + 7)
  48
  49 enum {
  50         RX51_JACK_DISABLED,
  51         RX51_JACK_TVOUT,                /* tv-out */
  52 };
  53
  54 static int rx51_spk_func;
  55 static int rx51_dmic_func;
  56 static int rx51_jack_func;
  57
  58 static void rx51_ext_control(struct snd_soc_codec *codec)
  59 {
  60         if (rx51_spk_func)
  61                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  62         else
  63                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  64         if (rx51_dmic_func)
  65                 snd_soc_dapm_enable_pin(codec, "DMic");
  66         else
  67                 snd_soc_dapm_disable_pin(codec, "DMic");
  68
  69         gpio_set_value(RX51_TVOUT_SEL_GPIO,
  70                        rx51_jack_func == RX51_JACK_TVOUT);
  71
  72         snd_soc_dapm_sync(codec);
  73 }
  74
  75 static int rx51_startup(struct snd_pcm_substream *substream)
  76 {
  77         struct snd_pcm_runtime *runtime = substream->runtime;
  78         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  79         struct snd_soc_codec *codec = rtd->socdev->card->codec;
  80
  81         snd_pcm_hw_constraint_minmax(runtime,
  82                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
  83         rx51_ext_control(codec);
  84
  85         return 0;
  86 }
  87
  88 static int rx51_hw_params(struct snd_pcm_substream *substream,
  89         struct snd_pcm_hw_params *params)
  90 {
  91         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  92         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  93         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  94         int err;
  95
  96         /* Set codec DAI configuration */
  97         err = snd_soc_dai_set_fmt(codec_dai,
  98                                   SND_SOC_DAIFMT_DSP_A |
  99                                   SND_SOC_DAIFMT_IB_NF |
 100                                   SND_SOC_DAIFMT_CBM_CFM);
 101         if (err < 0)
 102                 return err;
 103
 104         /* Set cpu DAI configuration */
 105         err = snd_soc_dai_set_fmt(cpu_dai,
 106                                   SND_SOC_DAIFMT_DSP_A |
 107                                   SND_SOC_DAIFMT_IB_NF |
 108                                   SND_SOC_DAIFMT_CBM_CFM);
 109         if (err < 0)
 110                 return err;
 111
 112         /* Set the codec system clock for DAC and ADC */
 113         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
 114                                       SND_SOC_CLOCK_IN);
 115 }
 116
 117 static struct snd_soc_ops rx51_ops = {
 118         .startup = rx51_startup,
 119         .hw_params = rx51_hw_params,
 120 };
 121
 122 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
 123                         struct snd_ctl_elem_value *ucontrol)
 124 {
 125         ucontrol->value.integer.value[0] = rx51_spk_func;
 126
 127         return 0;
 128 }
 129
 130 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
 131                         struct snd_ctl_elem_value *ucontrol)
 132 {
 133         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 134
 135         if (rx51_spk_func == ucontrol->value.integer.value[0])
 136                 return 0;
 137
 138         rx51_spk_func = ucontrol->value.integer.value[0];
 139         rx51_ext_control(codec);
 140
 141         return 1;
 142 }
 143
 144 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
 145                           struct snd_kcontrol *k, int event)
 146 {
 147         if (SND_SOC_DAPM_EVENT_ON(event))
 148                 gpio_set_value(RX51_SPEAKER_AMP_TWL_GPIO, 1);
 149         else
 150                 gpio_set_value(RX51_SPEAKER_AMP_TWL_GPIO, 0);
 151
 152         return 0;
 153 }
 154
 155 static int rx51_get_input(struct snd_kcontrol *kcontrol,
 156                           struct snd_ctl_elem_value *ucontrol)
 157 {
 158         ucontrol->value.integer.value[0] = rx51_dmic_func;
 159
 160         return 0;
 161 }
 162
 163 static int rx51_set_input(struct snd_kcontrol *kcontrol,
 164                           struct snd_ctl_elem_value *ucontrol)
 165 {
 166         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 167
 168         if (rx51_dmic_func == ucontrol->value.integer.value[0])
 169                 return 0;
 170
 171         rx51_dmic_func = ucontrol->value.integer.value[0];
 172         rx51_ext_control(codec);
 173
 174         return 1;
 175 }
 176
 177 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
 178                          struct snd_ctl_elem_value *ucontrol)
 179 {
 180         ucontrol->value.integer.value[0] = rx51_jack_func;
 181
 182         return 0;
 183 }
 184
 185 static int rx51_set_jack(struct snd_kcontrol *kcontrol,
 186                          struct snd_ctl_elem_value *ucontrol)
 187 {
 188         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 189
 190         if (rx51_jack_func == ucontrol->value.integer.value[0])
 191                 return 0;
 192
 193         rx51_jack_func = ucontrol->value.integer.value[0];
 194         rx51_ext_control(codec);
 195
 196         return 1;
 197 }
 198
 199 static struct snd_soc_jack rx51_av_jack;
 200
 201 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
 202         {
 203                 .gpio = RX51_JACK_DETECT_GPIO,
 204                 .name = "avdet-gpio",
 205                 .report = SND_JACK_VIDEOOUT,
 206                 .invert = 1,
 207                 .debounce_time = 200,
 208         },
 209 };
 210
 211 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
 212         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
 213         SND_SOC_DAPM_MIC("DMic", NULL),
 214 };
 215
 216 static const struct snd_soc_dapm_route audio_map[] = {
 217         {"Ext Spk", NULL, "HPLOUT"},
 218         {"Ext Spk", NULL, "HPROUT"},
 219
 220         {"DMic Rate 64", NULL, "Mic Bias 2V"},
 221         {"Mic Bias 2V", NULL, "DMic"},
 222 };
 223
 224 static const char *spk_function[] = {"Off", "On"};
 225 static const char *input_function[] = {"ADC", "Digital Mic"};
 226 static const char *jack_function[] = {"Off", "TV-OUT"};
 227
 228 static const struct soc_enum rx51_enum[] = {
 229         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 230         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 231         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 232 };
 233
 234 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
 235         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
 236                      rx51_get_spk, rx51_set_spk),
 237         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
 238                      rx51_get_input, rx51_set_input),
 239         SOC_ENUM_EXT("Jack Function", rx51_enum[2],
 240                      rx51_get_jack, rx51_set_jack),
 241 };
 242
 243 static int rx51_aic34_init(struct snd_soc_codec *codec)
 244 {
 245         struct snd_soc_card *card = codec->socdev->card;
 246         int err;
 247
 248         /* Set up NC codec pins */
 249         snd_soc_dapm_nc_pin(codec, "MIC3L");
 250         snd_soc_dapm_nc_pin(codec, "MIC3R");
 251         snd_soc_dapm_nc_pin(codec, "LINE1R");
 252
 253         /* Add RX-51 specific controls */
 254         err = snd_soc_add_controls(codec, aic34_rx51_controls,
 255                                    ARRAY_SIZE(aic34_rx51_controls));
 256         if (err < 0)
 257                 return err;
 258
 259         /* Add RX-51 specific widgets */
 260         snd_soc_dapm_new_controls(codec, aic34_dapm_widgets,
 261                                   ARRAY_SIZE(aic34_dapm_widgets));
 262
 263         /* Set up RX-51 specific audio path audio_map */
 264         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 265
 266         snd_soc_dapm_sync(codec);
 267
 268         /* AV jack detection */
 269         err = snd_soc_jack_new(card, "AV Jack",
 270                                SND_JACK_VIDEOOUT, &rx51_av_jack);
 271         if (err)
 272                 return err;
 273         err = snd_soc_jack_add_gpios(&rx51_av_jack,
 274                                      ARRAY_SIZE(rx51_av_jack_gpios),
 275                                      rx51_av_jack_gpios);
 276
 277         return err;
 278 }
 279
 280 /* Digital audio interface glue - connects codec <--> CPU */
 281 static struct snd_soc_dai_link rx51_dai[] = {
 282         {
 283                 .name = "TLV320AIC34",
 284                 .stream_name = "AIC34",
 285                 .cpu_dai = &omap_mcbsp_dai[0],
 286                 .codec_dai = &aic3x_dai,
 287                 .init = rx51_aic34_init,
 288                 .ops = &rx51_ops,
 289         },
 290 };
 291
 292 /* Audio private data */
 293 static struct aic3x_setup_data rx51_aic34_setup = {
 294         .gpio_func[0] = AIC3X_GPIO1_FUNC_DISABLED,
 295         .gpio_func[1] = AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT,
 296 };
 297
 298 /* Audio card */
 299 static struct snd_soc_card rx51_sound_card = {
 300         .name = "RX-51",
 301         .dai_link = rx51_dai,
 302         .num_links = ARRAY_SIZE(rx51_dai),
 303         .platform = &omap_soc_platform,
 304 };
 305
 306 /* Audio subsystem */
 307 static struct snd_soc_device rx51_snd_devdata = {
 308         .card = &rx51_sound_card,
 309         .codec_dev = &soc_codec_dev_aic3x,
 310         .codec_data = &rx51_aic34_setup,
 311 };
 312
 313 static struct platform_device *rx51_snd_device;
 314
 315 static int __init rx51_soc_init(void)
 316 {
 317         int err;
 318
 319         if (!machine_is_nokia_rx51())
 320                 return -ENODEV;
 321
 322         err = gpio_request(RX51_TVOUT_SEL_GPIO, "tvout_sel");
 323         if (err)
 324                 goto err_gpio_tvout_sel;
 325         gpio_direction_output(RX51_TVOUT_SEL_GPIO, 0);
 326
 327         rx51_snd_device = platform_device_alloc("soc-audio", -1);
 328         if (!rx51_snd_device) {
 329                 err = -ENOMEM;
 330                 goto err1;
 331         }
 332
 333         platform_set_drvdata(rx51_snd_device, &rx51_snd_devdata);
 334         rx51_snd_devdata.dev = &rx51_snd_device->dev;
 335         *(unsigned int *)rx51_dai[0].cpu_dai->private_data = 1; /* McBSP2 */
 336
 337         err = platform_device_add(rx51_snd_device);
 338         if (err)
 339                 goto err2;
 340
 341         return 0;
 342 err2:
 343         platform_device_put(rx51_snd_device);
 344 err1:
 345         gpio_free(RX51_TVOUT_SEL_GPIO);
 346 err_gpio_tvout_sel:
 347
 348         return err;
 349 }
 350
 351 static void __exit rx51_soc_exit(void)
 352 {
 353         snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
 354                                 rx51_av_jack_gpios);
 355
 356         platform_device_unregister(rx51_snd_device);
 357         gpio_free(RX51_TVOUT_SEL_GPIO);
 358 }
 359
 360 module_init(rx51_soc_init);
 361 module_exit(rx51_soc_exit);
 362
 363 MODULE_AUTHOR("Nokia Corporation");
 364 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
 365 MODULE_LICENSE("GPL");