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