sound/soc/omap/n810.c

   1 /*
   2  * n810.c  --  SoC audio for Nokia N810
   3  *
   4  * Copyright (C) 2008 Nokia Corporation
   5  *
   6  * Contact: Jarkko Nikula <jarkko.nikula@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/clk.h>
  25 #include <linux/platform_device.h>
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/soc.h>
  29 #include <sound/soc-dapm.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <mach/hardware.h>
  33 #include <linux/gpio.h>
  34 #include <mach/mcbsp.h>
  35
  36 #include "omap-mcbsp.h"
  37 #include "omap-pcm.h"
  38 #include "../codecs/tlv320aic3x.h"
  39
  40 #define N810_HEADSET_AMP_GPIO   10
  41 #define N810_SPEAKER_AMP_GPIO   101
  42
  43 enum {
  44         N810_JACK_DISABLED,
  45         N810_JACK_HP,
  46         N810_JACK_HS,
  47         N810_JACK_MIC,
  48 };
  49
  50 static struct clk *sys_clkout2;
  51 static struct clk *sys_clkout2_src;
  52 static struct clk *func96m_clk;
  53
  54 static int n810_spk_func;
  55 static int n810_jack_func;
  56 static int n810_dmic_func;
  57
  58 static void n810_ext_control(struct snd_soc_codec *codec)
  59 {
  60         int hp = 0, line1l = 0;
  61
  62         switch (n810_jack_func) {
  63         case N810_JACK_HS:
  64                 line1l = 1;
  65         case N810_JACK_HP:
  66                 hp = 1;
  67                 break;
  68         case N810_JACK_MIC:
  69                 line1l = 1;
  70                 break;
  71         }
  72
  73         if (n810_spk_func)
  74                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  75         else
  76                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  77
  78         if (hp)
  79                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  80         else
  81                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  82         if (line1l)
  83                 snd_soc_dapm_enable_pin(codec, "LINE1L");
  84         else
  85                 snd_soc_dapm_disable_pin(codec, "LINE1L");
  86
  87         if (n810_dmic_func)
  88                 snd_soc_dapm_enable_pin(codec, "DMic");
  89         else
  90                 snd_soc_dapm_disable_pin(codec, "DMic");
  91
  92         snd_soc_dapm_sync(codec);
  93 }
  94
  95 static int n810_startup(struct snd_pcm_substream *substream)
  96 {
  97         struct snd_pcm_runtime *runtime = substream->runtime;
  98         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  99         struct snd_soc_codec *codec = rtd->socdev->card->codec;
 100
 101         snd_pcm_hw_constraint_minmax(runtime,
 102                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
 103
 104         n810_ext_control(codec);
 105         return clk_enable(sys_clkout2);
 106 }
 107
 108 static void n810_shutdown(struct snd_pcm_substream *substream)
 109 {
 110         clk_disable(sys_clkout2);
 111 }
 112
 113 static int n810_hw_params(struct snd_pcm_substream *substream,
 114         struct snd_pcm_hw_params *params)
 115 {
 116         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 117         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
 118         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 119         int err;
 120
 121         /* Set codec DAI configuration */
 122         err = snd_soc_dai_set_fmt(codec_dai,
 123                                          SND_SOC_DAIFMT_I2S |
 124                                          SND_SOC_DAIFMT_NB_NF |
 125                                          SND_SOC_DAIFMT_CBM_CFM);
 126         if (err < 0)
 127                 return err;
 128
 129         /* Set cpu DAI configuration */
 130         err = snd_soc_dai_set_fmt(cpu_dai,
 131                                        SND_SOC_DAIFMT_I2S |
 132                                        SND_SOC_DAIFMT_NB_NF |
 133                                        SND_SOC_DAIFMT_CBM_CFM);
 134         if (err < 0)
 135                 return err;
 136
 137         /* Set the codec system clock for DAC and ADC */
 138         err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
 139                                             SND_SOC_CLOCK_IN);
 140
 141         return err;
 142 }
 143
 144 static struct snd_soc_ops n810_ops = {
 145         .startup = n810_startup,
 146         .hw_params = n810_hw_params,
 147         .shutdown = n810_shutdown,
 148 };
 149
 150 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 151                         struct snd_ctl_elem_value *ucontrol)
 152 {
 153         ucontrol->value.integer.value[0] = n810_spk_func;
 154
 155         return 0;
 156 }
 157
 158 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 159                         struct snd_ctl_elem_value *ucontrol)
 160 {
 161         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 162
 163         if (n810_spk_func == ucontrol->value.integer.value[0])
 164                 return 0;
 165
 166         n810_spk_func = ucontrol->value.integer.value[0];
 167         n810_ext_control(codec);
 168
 169         return 1;
 170 }
 171
 172 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 173                          struct snd_ctl_elem_value *ucontrol)
 174 {
 175         ucontrol->value.integer.value[0] = n810_jack_func;
 176
 177         return 0;
 178 }
 179
 180 static int n810_set_jack(struct snd_kcontrol *kcontrol,
 181                          struct snd_ctl_elem_value *ucontrol)
 182 {
 183         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 184
 185         if (n810_jack_func == ucontrol->value.integer.value[0])
 186                 return 0;
 187
 188         n810_jack_func = ucontrol->value.integer.value[0];
 189         n810_ext_control(codec);
 190
 191         return 1;
 192 }
 193
 194 static int n810_get_input(struct snd_kcontrol *kcontrol,
 195                           struct snd_ctl_elem_value *ucontrol)
 196 {
 197         ucontrol->value.integer.value[0] = n810_dmic_func;
 198
 199         return 0;
 200 }
 201
 202 static int n810_set_input(struct snd_kcontrol *kcontrol,
 203                           struct snd_ctl_elem_value *ucontrol)
 204 {
 205         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 206
 207         if (n810_dmic_func == ucontrol->value.integer.value[0])
 208                 return 0;
 209
 210         n810_dmic_func = ucontrol->value.integer.value[0];
 211         n810_ext_control(codec);
 212
 213         return 1;
 214 }
 215
 216 static int n810_spk_event(struct snd_soc_dapm_widget *w,
 217                           struct snd_kcontrol *k, int event)
 218 {
 219         if (SND_SOC_DAPM_EVENT_ON(event))
 220                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
 221         else
 222                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
 223
 224         return 0;
 225 }
 226
 227 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 228                            struct snd_kcontrol *k, int event)
 229 {
 230         if (SND_SOC_DAPM_EVENT_ON(event))
 231                 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
 232         else
 233                 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
 234
 235         return 0;
 236 }
 237
 238 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 239         SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 240         SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 241         SND_SOC_DAPM_MIC("DMic", NULL),
 242 };
 243
 244 static const struct snd_soc_dapm_route audio_map[] = {
 245         {"Headphone Jack", NULL, "HPLOUT"},
 246         {"Headphone Jack", NULL, "HPROUT"},
 247
 248         {"Ext Spk", NULL, "LLOUT"},
 249         {"Ext Spk", NULL, "RLOUT"},
 250
 251         {"DMic Rate 64", NULL, "Mic Bias 2V"},
 252         {"Mic Bias 2V", NULL, "DMic"},
 253 };
 254
 255 static const char *spk_function[] = {"Off", "On"};
 256 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
 257 static const char *input_function[] = {"ADC", "Digital Mic"};
 258 static const struct soc_enum n810_enum[] = {
 259         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 260         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 261         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 262 };
 263
 264 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 265         SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 266                      n810_get_spk, n810_set_spk),
 267         SOC_ENUM_EXT("Jack Function", n810_enum[1],
 268                      n810_get_jack, n810_set_jack),
 269         SOC_ENUM_EXT("Input Select",  n810_enum[2],
 270                      n810_get_input, n810_set_input),
 271 };
 272
 273 static int n810_aic33_init(struct snd_soc_codec *codec)
 274 {
 275         int err;
 276
 277         /* Not connected */
 278         snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
 279         snd_soc_dapm_nc_pin(codec, "HPLCOM");
 280         snd_soc_dapm_nc_pin(codec, "HPRCOM");
 281         snd_soc_dapm_nc_pin(codec, "MIC3L");
 282         snd_soc_dapm_nc_pin(codec, "MIC3R");
 283         snd_soc_dapm_nc_pin(codec, "LINE1R");
 284         snd_soc_dapm_nc_pin(codec, "LINE2L");
 285         snd_soc_dapm_nc_pin(codec, "LINE2R");
 286
 287         /* Add N810 specific controls */
 288         err = snd_soc_add_controls(codec, aic33_n810_controls,
 289                                 ARRAY_SIZE(aic33_n810_controls));
 290         if (err < 0)
 291                 return err;
 292
 293         /* Add N810 specific widgets */
 294         snd_soc_dapm_new_controls(codec, aic33_dapm_widgets,
 295                                   ARRAY_SIZE(aic33_dapm_widgets));
 296
 297         /* Set up N810 specific audio path audio_map */
 298         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 299
 300         snd_soc_dapm_sync(codec);
 301
 302         return 0;
 303 }
 304
 305 /* Digital audio interface glue - connects codec <--> CPU */
 306 static struct snd_soc_dai_link n810_dai = {
 307         .name = "TLV320AIC33",
 308         .stream_name = "AIC33",
 309         .cpu_dai = &omap_mcbsp_dai[0],
 310         .codec_dai = &aic3x_dai,
 311         .init = n810_aic33_init,
 312         .ops = &n810_ops,
 313 };
 314
 315 /* Audio machine driver */
 316 static struct snd_soc_card snd_soc_n810 = {
 317         .name = "N810",
 318         .platform = &omap_soc_platform,
 319         .dai_link = &n810_dai,
 320         .num_links = 1,
 321 };
 322
 323 /* Audio private data */
 324 static struct aic3x_setup_data n810_aic33_setup = {
 325         .i2c_bus = 2,
 326         .i2c_address = 0x18,
 327         .gpio_func[0] = AIC3X_GPIO1_FUNC_DISABLED,
 328         .gpio_func[1] = AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT,
 329 };
 330
 331 /* Audio subsystem */
 332 static struct snd_soc_device n810_snd_devdata = {
 333         .card = &snd_soc_n810,
 334         .codec_dev = &soc_codec_dev_aic3x,
 335         .codec_data = &n810_aic33_setup,
 336 };
 337
 338 static struct platform_device *n810_snd_device;
 339
 340 static int __init n810_soc_init(void)
 341 {
 342         int err;
 343         struct device *dev;
 344
 345         if (!(machine_is_nokia_n810() || machine_is_nokia_n810_wimax()))
 346                 return -ENODEV;
 347
 348         n810_snd_device = platform_device_alloc("soc-audio", -1);
 349         if (!n810_snd_device)
 350                 return -ENOMEM;
 351
 352         platform_set_drvdata(n810_snd_device, &n810_snd_devdata);
 353         n810_snd_devdata.dev = &n810_snd_device->dev;
 354         *(unsigned int *)n810_dai.cpu_dai->private_data = 1; /* McBSP2 */
 355         err = platform_device_add(n810_snd_device);
 356         if (err)
 357                 goto err1;
 358
 359         dev = &n810_snd_device->dev;
 360
 361         sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 362         if (IS_ERR(sys_clkout2_src)) {
 363                 dev_err(dev, "Could not get sys_clkout2_src clock\n");
 364                 err = PTR_ERR(sys_clkout2_src);
 365                 goto err2;
 366         }
 367         sys_clkout2 = clk_get(dev, "sys_clkout2");
 368         if (IS_ERR(sys_clkout2)) {
 369                 dev_err(dev, "Could not get sys_clkout2\n");
 370                 err = PTR_ERR(sys_clkout2);
 371                 goto err3;
 372         }
 373         /*
 374          * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 375          * 96 MHz as its parent in order to get 12 MHz
 376          */
 377         func96m_clk = clk_get(dev, "func_96m_ck");
 378         if (IS_ERR(func96m_clk)) {
 379                 dev_err(dev, "Could not get func 96M clock\n");
 380                 err = PTR_ERR(func96m_clk);
 381                 goto err4;
 382         }
 383         clk_set_parent(sys_clkout2_src, func96m_clk);
 384         clk_set_rate(sys_clkout2, 12000000);
 385
 386         if (gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0)
 387                 BUG();
 388         if (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0)
 389                 BUG();
 390         gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
 391         gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
 392
 393         return 0;
 394 err4:
 395         clk_put(sys_clkout2);
 396 err3:
 397         clk_put(sys_clkout2_src);
 398 err2:
 399         platform_device_del(n810_snd_device);
 400 err1:
 401         platform_device_put(n810_snd_device);
 402
 403         return err;
 404 }
 405
 406 static void __exit n810_soc_exit(void)
 407 {
 408         gpio_free(N810_SPEAKER_AMP_GPIO);
 409         gpio_free(N810_HEADSET_AMP_GPIO);
 410         clk_put(sys_clkout2_src);
 411         clk_put(sys_clkout2);
 412         clk_put(func96m_clk);
 413
 414         platform_device_unregister(n810_snd_device);
 415 }
 416
 417 module_init(n810_soc_init);
 418 module_exit(n810_soc_exit);
 419
 420 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@nokia.com>");
 421 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 422 MODULE_LICENSE("GPL");