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 <jhnikula@gmail.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/i2c.h>
  26 #include <linux/platform_device.h>
  27 #include <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/soc.h>
  30 #include <sound/soc-dapm.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <mach/hardware.h>
  34 #include <linux/gpio.h>
  35 #include <plat/mcbsp.h>
  36
  37 #include "omap-mcbsp.h"
  38 #include "omap-pcm.h"
  39 #include "../codecs/tlv320aic3x.h"
  40
  41 #define N810_HEADSET_AMP_GPIO   10
  42 #define N810_SPEAKER_AMP_GPIO   101
  43
  44 enum {
  45         N810_JACK_DISABLED,
  46         N810_JACK_HP,
  47         N810_JACK_HS,
  48         N810_JACK_MIC,
  49 };
  50
  51 static struct clk *sys_clkout2;
  52 static struct clk *sys_clkout2_src;
  53 static struct clk *func96m_clk;
  54
  55 static int n810_spk_func;
  56 static int n810_jack_func;
  57 static int n810_dmic_func;
  58
  59 static void n810_ext_control(struct snd_soc_codec *codec)
  60 {
  61         struct snd_soc_dapm_context *dapm = &codec->dapm;
  62         int hp = 0, line1l = 0;
  63
  64         switch (n810_jack_func) {
  65         case N810_JACK_HS:
  66                 line1l = 1;
  67         case N810_JACK_HP:
  68                 hp = 1;
  69                 break;
  70         case N810_JACK_MIC:
  71                 line1l = 1;
  72                 break;
  73         }
  74
  75         if (n810_spk_func)
  76                 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
  77         else
  78                 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
  79
  80         if (hp)
  81                 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  82         else
  83                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
  84         if (line1l)
  85                 snd_soc_dapm_enable_pin(dapm, "LINE1L");
  86         else
  87                 snd_soc_dapm_disable_pin(dapm, "LINE1L");
  88
  89         if (n810_dmic_func)
  90                 snd_soc_dapm_enable_pin(dapm, "DMic");
  91         else
  92                 snd_soc_dapm_disable_pin(dapm, "DMic");
  93
  94         snd_soc_dapm_sync(dapm);
  95 }
  96
  97 static int n810_startup(struct snd_pcm_substream *substream)
  98 {
  99         struct snd_pcm_runtime *runtime = substream->runtime;
 100         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 101         struct snd_soc_codec *codec = rtd->codec;
 102
 103         snd_pcm_hw_constraint_minmax(runtime,
 104                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
 105
 106         n810_ext_control(codec);
 107         return clk_enable(sys_clkout2);
 108 }
 109
 110 static void n810_shutdown(struct snd_pcm_substream *substream)
 111 {
 112         clk_disable(sys_clkout2);
 113 }
 114
 115 static int n810_hw_params(struct snd_pcm_substream *substream,
 116         struct snd_pcm_hw_params *params)
 117 {
 118         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 119         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 120         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 121         int err;
 122
 123         /* Set codec DAI configuration */
 124         err = snd_soc_dai_set_fmt(codec_dai,
 125                                          SND_SOC_DAIFMT_I2S |
 126                                          SND_SOC_DAIFMT_NB_NF |
 127                                          SND_SOC_DAIFMT_CBM_CFM);
 128         if (err < 0)
 129                 return err;
 130
 131         /* Set cpu DAI configuration */
 132         err = snd_soc_dai_set_fmt(cpu_dai,
 133                                        SND_SOC_DAIFMT_I2S |
 134                                        SND_SOC_DAIFMT_NB_NF |
 135                                        SND_SOC_DAIFMT_CBM_CFM);
 136         if (err < 0)
 137                 return err;
 138
 139         /* Set the codec system clock for DAC and ADC */
 140         err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
 141                                             SND_SOC_CLOCK_IN);
 142
 143         return err;
 144 }
 145
 146 static struct snd_soc_ops n810_ops = {
 147         .startup = n810_startup,
 148         .hw_params = n810_hw_params,
 149         .shutdown = n810_shutdown,
 150 };
 151
 152 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 153                         struct snd_ctl_elem_value *ucontrol)
 154 {
 155         ucontrol->value.integer.value[0] = n810_spk_func;
 156
 157         return 0;
 158 }
 159
 160 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 161                         struct snd_ctl_elem_value *ucontrol)
 162 {
 163         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 164
 165         if (n810_spk_func == ucontrol->value.integer.value[0])
 166                 return 0;
 167
 168         n810_spk_func = ucontrol->value.integer.value[0];
 169         n810_ext_control(codec);
 170
 171         return 1;
 172 }
 173
 174 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 175                          struct snd_ctl_elem_value *ucontrol)
 176 {
 177         ucontrol->value.integer.value[0] = n810_jack_func;
 178
 179         return 0;
 180 }
 181
 182 static int n810_set_jack(struct snd_kcontrol *kcontrol,
 183                          struct snd_ctl_elem_value *ucontrol)
 184 {
 185         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 186
 187         if (n810_jack_func == ucontrol->value.integer.value[0])
 188                 return 0;
 189
 190         n810_jack_func = ucontrol->value.integer.value[0];
 191         n810_ext_control(codec);
 192
 193         return 1;
 194 }
 195
 196 static int n810_get_input(struct snd_kcontrol *kcontrol,
 197                           struct snd_ctl_elem_value *ucontrol)
 198 {
 199         ucontrol->value.integer.value[0] = n810_dmic_func;
 200
 201         return 0;
 202 }
 203
 204 static int n810_set_input(struct snd_kcontrol *kcontrol,
 205                           struct snd_ctl_elem_value *ucontrol)
 206 {
 207         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 208
 209         if (n810_dmic_func == ucontrol->value.integer.value[0])
 210                 return 0;
 211
 212         n810_dmic_func = ucontrol->value.integer.value[0];
 213         n810_ext_control(codec);
 214
 215         return 1;
 216 }
 217
 218 static int n810_spk_event(struct snd_soc_dapm_widget *w,
 219                           struct snd_kcontrol *k, int event)
 220 {
 221         if (SND_SOC_DAPM_EVENT_ON(event))
 222                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
 223         else
 224                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
 225
 226         return 0;
 227 }
 228
 229 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 230                            struct snd_kcontrol *k, int event)
 231 {
 232         if (SND_SOC_DAPM_EVENT_ON(event))
 233                 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
 234         else
 235                 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
 236
 237         return 0;
 238 }
 239
 240 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 241         SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 242         SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 243         SND_SOC_DAPM_MIC("DMic", NULL),
 244 };
 245
 246 static const struct snd_soc_dapm_route audio_map[] = {
 247         {"Headphone Jack", NULL, "HPLOUT"},
 248         {"Headphone Jack", NULL, "HPROUT"},
 249
 250         {"Ext Spk", NULL, "LLOUT"},
 251         {"Ext Spk", NULL, "RLOUT"},
 252
 253         {"DMic Rate 64", NULL, "Mic Bias 2V"},
 254         {"Mic Bias 2V", NULL, "DMic"},
 255 };
 256
 257 static const char *spk_function[] = {"Off", "On"};
 258 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
 259 static const char *input_function[] = {"ADC", "Digital Mic"};
 260 static const struct soc_enum n810_enum[] = {
 261         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 262         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 263         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 264 };
 265
 266 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 267         SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 268                      n810_get_spk, n810_set_spk),
 269         SOC_ENUM_EXT("Jack Function", n810_enum[1],
 270                      n810_get_jack, n810_set_jack),
 271         SOC_ENUM_EXT("Input Select",  n810_enum[2],
 272                      n810_get_input, n810_set_input),
 273 };
 274
 275 static int n810_aic33_init(struct snd_soc_pcm_runtime *rtd)
 276 {
 277         struct snd_soc_codec *codec = rtd->codec;
 278         struct snd_soc_dapm_context *dapm = &codec->dapm;
 279         int err;
 280
 281         /* Not connected */
 282         snd_soc_dapm_nc_pin(dapm, "MONO_LOUT");
 283         snd_soc_dapm_nc_pin(dapm, "HPLCOM");
 284         snd_soc_dapm_nc_pin(dapm, "HPRCOM");
 285         snd_soc_dapm_nc_pin(dapm, "MIC3L");
 286         snd_soc_dapm_nc_pin(dapm, "MIC3R");
 287         snd_soc_dapm_nc_pin(dapm, "LINE1R");
 288         snd_soc_dapm_nc_pin(dapm, "LINE2L");
 289         snd_soc_dapm_nc_pin(dapm, "LINE2R");
 290
 291         /* Add N810 specific controls */
 292         err = snd_soc_add_controls(codec, aic33_n810_controls,
 293                                 ARRAY_SIZE(aic33_n810_controls));
 294         if (err < 0)
 295                 return err;
 296
 297         /* Add N810 specific widgets */
 298         snd_soc_dapm_new_controls(dapm, aic33_dapm_widgets,
 299                                   ARRAY_SIZE(aic33_dapm_widgets));
 300
 301         /* Set up N810 specific audio path audio_map */
 302         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 303
 304         snd_soc_dapm_sync(dapm);
 305
 306         return 0;
 307 }
 308
 309 /* Digital audio interface glue - connects codec <--> CPU */
 310 static struct snd_soc_dai_link n810_dai = {
 311         .name = "TLV320AIC33",
 312         .stream_name = "AIC33",
 313         .cpu_dai_name = "omap-mcbsp-dai.1",
 314         .platform_name = "omap-pcm-audio",
 315         .codec_name = "tlv320aic3x-codec.2-0018",
 316         .codec_dai_name = "tlv320aic3x-hifi",
 317         .init = n810_aic33_init,
 318         .ops = &n810_ops,
 319 };
 320
 321 /* Audio machine driver */
 322 static struct snd_soc_card snd_soc_n810 = {
 323         .name = "N810",
 324         .dai_link = &n810_dai,
 325         .num_links = 1,
 326 };
 327
 328 static struct platform_device *n810_snd_device;
 329
 330 static int __init n810_soc_init(void)
 331 {
 332         int err;
 333         struct device *dev;
 334
 335         if (!(machine_is_nokia_n810() || machine_is_nokia_n810_wimax()))
 336                 return -ENODEV;
 337
 338         n810_snd_device = platform_device_alloc("soc-audio", -1);
 339         if (!n810_snd_device)
 340                 return -ENOMEM;
 341
 342         platform_set_drvdata(n810_snd_device, &snd_soc_n810);
 343         err = platform_device_add(n810_snd_device);
 344         if (err)
 345                 goto err1;
 346
 347         dev = &n810_snd_device->dev;
 348
 349         sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 350         if (IS_ERR(sys_clkout2_src)) {
 351                 dev_err(dev, "Could not get sys_clkout2_src clock\n");
 352                 err = PTR_ERR(sys_clkout2_src);
 353                 goto err2;
 354         }
 355         sys_clkout2 = clk_get(dev, "sys_clkout2");
 356         if (IS_ERR(sys_clkout2)) {
 357                 dev_err(dev, "Could not get sys_clkout2\n");
 358                 err = PTR_ERR(sys_clkout2);
 359                 goto err3;
 360         }
 361         /*
 362          * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 363          * 96 MHz as its parent in order to get 12 MHz
 364          */
 365         func96m_clk = clk_get(dev, "func_96m_ck");
 366         if (IS_ERR(func96m_clk)) {
 367                 dev_err(dev, "Could not get func 96M clock\n");
 368                 err = PTR_ERR(func96m_clk);
 369                 goto err4;
 370         }
 371         clk_set_parent(sys_clkout2_src, func96m_clk);
 372         clk_set_rate(sys_clkout2, 12000000);
 373
 374         BUG_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
 375                (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0));
 376
 377         gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
 378         gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
 379
 380         return 0;
 381 err4:
 382         clk_put(sys_clkout2);
 383 err3:
 384         clk_put(sys_clkout2_src);
 385 err2:
 386         platform_device_del(n810_snd_device);
 387 err1:
 388         platform_device_put(n810_snd_device);
 389
 390         return err;
 391 }
 392
 393 static void __exit n810_soc_exit(void)
 394 {
 395         gpio_free(N810_SPEAKER_AMP_GPIO);
 396         gpio_free(N810_HEADSET_AMP_GPIO);
 397         clk_put(sys_clkout2_src);
 398         clk_put(sys_clkout2);
 399         clk_put(func96m_clk);
 400
 401         platform_device_unregister(n810_snd_device);
 402 }
 403
 404 module_init(n810_soc_init);
 405 module_exit(n810_soc_exit);
 406
 407 MODULE_AUTHOR("Jarkko Nikula <jhnikula@gmail.com>");
 408 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 409 MODULE_LICENSE("GPL");