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