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@bitmer.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
  31 #include <asm/mach-types.h>
  32 #include <linux/gpio.h>
  33 #include <linux/module.h>
  34 #include <linux/platform_data/asoc-ti-mcbsp.h>
  35
  36 #include "omap-mcbsp.h"
  37
  38 #define N810_HEADSET_AMP_GPIO   10
  39 #define N810_SPEAKER_AMP_GPIO   101
  40
  41 enum {
  42         N810_JACK_DISABLED,
  43         N810_JACK_HP,
  44         N810_JACK_HS,
  45         N810_JACK_MIC,
  46 };
  47
  48 static struct clk *sys_clkout2;
  49 static struct clk *sys_clkout2_src;
  50 static struct clk *func96m_clk;
  51
  52 static int n810_spk_func;
  53 static int n810_jack_func;
  54 static int n810_dmic_func;
  55
  56 static void n810_ext_control(struct snd_soc_dapm_context *dapm)
  57 {
  58         int hp = 0, line1l = 0;
  59
  60         switch (n810_jack_func) {
  61         case N810_JACK_HS:
  62                 line1l = 1;
  63         case N810_JACK_HP:
  64                 hp = 1;
  65                 break;
  66         case N810_JACK_MIC:
  67                 line1l = 1;
  68                 break;
  69         }
  70
  71         snd_soc_dapm_mutex_lock(dapm);
  72
  73         if (n810_spk_func)
  74                 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
  75         else
  76                 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
  77
  78         if (hp)
  79                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  80         else
  81                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  82         if (line1l)
  83                 snd_soc_dapm_enable_pin_unlocked(dapm, "LINE1L");
  84         else
  85                 snd_soc_dapm_disable_pin_unlocked(dapm, "LINE1L");
  86
  87         if (n810_dmic_func)
  88                 snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
  89         else
  90                 snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
  91
  92         snd_soc_dapm_sync_unlocked(dapm);
  93
  94         snd_soc_dapm_mutex_unlock(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->dapm);
 107         return clk_prepare_enable(sys_clkout2);
 108 }
 109
 110 static void n810_shutdown(struct snd_pcm_substream *substream)
 111 {
 112         clk_disable_unprepare(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         int err;
 121
 122         /* Set the codec system clock for DAC and ADC */
 123         err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
 124                                             SND_SOC_CLOCK_IN);
 125
 126         return err;
 127 }
 128
 129 static struct snd_soc_ops n810_ops = {
 130         .startup = n810_startup,
 131         .hw_params = n810_hw_params,
 132         .shutdown = n810_shutdown,
 133 };
 134
 135 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 136                         struct snd_ctl_elem_value *ucontrol)
 137 {
 138         ucontrol->value.integer.value[0] = n810_spk_func;
 139
 140         return 0;
 141 }
 142
 143 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 144                         struct snd_ctl_elem_value *ucontrol)
 145 {
 146         struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
 147
 148         if (n810_spk_func == ucontrol->value.integer.value[0])
 149                 return 0;
 150
 151         n810_spk_func = ucontrol->value.integer.value[0];
 152         n810_ext_control(&card->dapm);
 153
 154         return 1;
 155 }
 156
 157 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 158                          struct snd_ctl_elem_value *ucontrol)
 159 {
 160         ucontrol->value.integer.value[0] = n810_jack_func;
 161
 162         return 0;
 163 }
 164
 165 static int n810_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 (n810_jack_func == ucontrol->value.integer.value[0])
 171                 return 0;
 172
 173         n810_jack_func = ucontrol->value.integer.value[0];
 174         n810_ext_control(&card->dapm);
 175
 176         return 1;
 177 }
 178
 179 static int n810_get_input(struct snd_kcontrol *kcontrol,
 180                           struct snd_ctl_elem_value *ucontrol)
 181 {
 182         ucontrol->value.integer.value[0] = n810_dmic_func;
 183
 184         return 0;
 185 }
 186
 187 static int n810_set_input(struct snd_kcontrol *kcontrol,
 188                           struct snd_ctl_elem_value *ucontrol)
 189 {
 190         struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
 191
 192         if (n810_dmic_func == ucontrol->value.integer.value[0])
 193                 return 0;
 194
 195         n810_dmic_func = ucontrol->value.integer.value[0];
 196         n810_ext_control(&card->dapm);
 197
 198         return 1;
 199 }
 200
 201 static int n810_spk_event(struct snd_soc_dapm_widget *w,
 202                           struct snd_kcontrol *k, int event)
 203 {
 204         if (SND_SOC_DAPM_EVENT_ON(event))
 205                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
 206         else
 207                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
 208
 209         return 0;
 210 }
 211
 212 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 213                            struct snd_kcontrol *k, int event)
 214 {
 215         if (SND_SOC_DAPM_EVENT_ON(event))
 216                 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
 217         else
 218                 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
 219
 220         return 0;
 221 }
 222
 223 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 224         SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 225         SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 226         SND_SOC_DAPM_MIC("DMic", NULL),
 227 };
 228
 229 static const struct snd_soc_dapm_route audio_map[] = {
 230         {"Headphone Jack", NULL, "HPLOUT"},
 231         {"Headphone Jack", NULL, "HPROUT"},
 232
 233         {"Ext Spk", NULL, "LLOUT"},
 234         {"Ext Spk", NULL, "RLOUT"},
 235
 236         {"DMic Rate 64", NULL, "Mic Bias"},
 237         {"Mic Bias", NULL, "DMic"},
 238 };
 239
 240 static const char *spk_function[] = {"Off", "On"};
 241 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
 242 static const char *input_function[] = {"ADC", "Digital Mic"};
 243 static const struct soc_enum n810_enum[] = {
 244         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 245         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 246         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 247 };
 248
 249 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 250         SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 251                      n810_get_spk, n810_set_spk),
 252         SOC_ENUM_EXT("Jack Function", n810_enum[1],
 253                      n810_get_jack, n810_set_jack),
 254         SOC_ENUM_EXT("Input Select",  n810_enum[2],
 255                      n810_get_input, n810_set_input),
 256 };
 257
 258 static int n810_aic33_init(struct snd_soc_pcm_runtime *rtd)
 259 {
 260         struct snd_soc_codec *codec = rtd->codec;
 261         struct snd_soc_dapm_context *dapm = &codec->dapm;
 262
 263         /* Not connected */
 264         snd_soc_dapm_nc_pin(dapm, "MONO_LOUT");
 265         snd_soc_dapm_nc_pin(dapm, "HPLCOM");
 266         snd_soc_dapm_nc_pin(dapm, "HPRCOM");
 267         snd_soc_dapm_nc_pin(dapm, "MIC3L");
 268         snd_soc_dapm_nc_pin(dapm, "MIC3R");
 269         snd_soc_dapm_nc_pin(dapm, "LINE1R");
 270         snd_soc_dapm_nc_pin(dapm, "LINE2L");
 271         snd_soc_dapm_nc_pin(dapm, "LINE2R");
 272
 273         return 0;
 274 }
 275
 276 /* Digital audio interface glue - connects codec <--> CPU */
 277 static struct snd_soc_dai_link n810_dai = {
 278         .name = "TLV320AIC33",
 279         .stream_name = "AIC33",
 280         .cpu_dai_name = "omap-mcbsp.2",
 281         .platform_name = "omap-mcbsp.2",
 282         .codec_name = "tlv320aic3x-codec.2-0018",
 283         .codec_dai_name = "tlv320aic3x-hifi",
 284         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 285                    SND_SOC_DAIFMT_CBM_CFM,
 286         .init = n810_aic33_init,
 287         .ops = &n810_ops,
 288 };
 289
 290 /* Audio machine driver */
 291 static struct snd_soc_card snd_soc_n810 = {
 292         .name = "N810",
 293         .owner = THIS_MODULE,
 294         .dai_link = &n810_dai,
 295         .num_links = 1,
 296
 297         .controls = aic33_n810_controls,
 298         .num_controls = ARRAY_SIZE(aic33_n810_controls),
 299         .dapm_widgets = aic33_dapm_widgets,
 300         .num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
 301         .dapm_routes = audio_map,
 302         .num_dapm_routes = ARRAY_SIZE(audio_map),
 303 };
 304
 305 static struct platform_device *n810_snd_device;
 306
 307 static int __init n810_soc_init(void)
 308 {
 309         int err;
 310         struct device *dev;
 311
 312         if (!of_have_populated_dt() ||
 313             (!of_machine_is_compatible("nokia,n810") &&
 314              !of_machine_is_compatible("nokia,n810-wimax")))
 315                 return -ENODEV;
 316
 317         n810_snd_device = platform_device_alloc("soc-audio", -1);
 318         if (!n810_snd_device)
 319                 return -ENOMEM;
 320
 321         platform_set_drvdata(n810_snd_device, &snd_soc_n810);
 322         err = platform_device_add(n810_snd_device);
 323         if (err)
 324                 goto err1;
 325
 326         dev = &n810_snd_device->dev;
 327
 328         sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 329         if (IS_ERR(sys_clkout2_src)) {
 330                 dev_err(dev, "Could not get sys_clkout2_src clock\n");
 331                 err = PTR_ERR(sys_clkout2_src);
 332                 goto err2;
 333         }
 334         sys_clkout2 = clk_get(dev, "sys_clkout2");
 335         if (IS_ERR(sys_clkout2)) {
 336                 dev_err(dev, "Could not get sys_clkout2\n");
 337                 err = PTR_ERR(sys_clkout2);
 338                 goto err3;
 339         }
 340         /*
 341          * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 342          * 96 MHz as its parent in order to get 12 MHz
 343          */
 344         func96m_clk = clk_get(dev, "func_96m_ck");
 345         if (IS_ERR(func96m_clk)) {
 346                 dev_err(dev, "Could not get func 96M clock\n");
 347                 err = PTR_ERR(func96m_clk);
 348                 goto err4;
 349         }
 350         clk_set_parent(sys_clkout2_src, func96m_clk);
 351         clk_set_rate(sys_clkout2, 12000000);
 352
 353         if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
 354                     (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) {
 355                 err = -EINVAL;
 356                 goto err4;
 357         }
 358
 359         gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
 360         gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
 361
 362         return 0;
 363 err4:
 364         clk_put(sys_clkout2);
 365 err3:
 366         clk_put(sys_clkout2_src);
 367 err2:
 368         platform_device_del(n810_snd_device);
 369 err1:
 370         platform_device_put(n810_snd_device);
 371
 372         return err;
 373 }
 374
 375 static void __exit n810_soc_exit(void)
 376 {
 377         gpio_free(N810_SPEAKER_AMP_GPIO);
 378         gpio_free(N810_HEADSET_AMP_GPIO);
 379         clk_put(sys_clkout2_src);
 380         clk_put(sys_clkout2);
 381         clk_put(func96m_clk);
 382
 383         platform_device_unregister(n810_snd_device);
 384 }
 385
 386 module_init(n810_soc_init);
 387 module_exit(n810_soc_exit);
 388
 389 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
 390 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 391 MODULE_LICENSE("GPL");