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 static struct clk *sys_clkout2;
  44 static struct clk *sys_clkout2_src;
  45 static struct clk *func96m_clk;
  46
  47 static int n810_spk_func;
  48 static int n810_jack_func;
  49 static int n810_dmic_func;
  50
  51 static void n810_ext_control(struct snd_soc_codec *codec)
  52 {
  53         if (n810_spk_func)
  54                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  55         else
  56                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  57
  58         if (n810_jack_func)
  59                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  60         else
  61                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  62
  63         if (n810_dmic_func)
  64                 snd_soc_dapm_enable_pin(codec, "DMic");
  65         else
  66                 snd_soc_dapm_disable_pin(codec, "DMic");
  67
  68         snd_soc_dapm_sync(codec);
  69 }
  70
  71 static int n810_startup(struct snd_pcm_substream *substream)
  72 {
  73         struct snd_pcm_runtime *runtime = substream->runtime;
  74         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  75         struct snd_soc_codec *codec = rtd->socdev->card->codec;
  76
  77         snd_pcm_hw_constraint_minmax(runtime,
  78                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
  79
  80         n810_ext_control(codec);
  81         return clk_enable(sys_clkout2);
  82 }
  83
  84 static void n810_shutdown(struct snd_pcm_substream *substream)
  85 {
  86         clk_disable(sys_clkout2);
  87 }
  88
  89 static int n810_hw_params(struct snd_pcm_substream *substream,
  90         struct snd_pcm_hw_params *params)
  91 {
  92         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  93         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  94         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  95         int err;
  96
  97         /* Set codec DAI configuration */
  98         err = snd_soc_dai_set_fmt(codec_dai,
  99                                          SND_SOC_DAIFMT_I2S |
 100                                          SND_SOC_DAIFMT_NB_NF |
 101                                          SND_SOC_DAIFMT_CBM_CFM);
 102         if (err < 0)
 103                 return err;
 104
 105         /* Set cpu DAI configuration */
 106         err = snd_soc_dai_set_fmt(cpu_dai,
 107                                        SND_SOC_DAIFMT_I2S |
 108                                        SND_SOC_DAIFMT_NB_NF |
 109                                        SND_SOC_DAIFMT_CBM_CFM);
 110         if (err < 0)
 111                 return err;
 112
 113         /* Set the codec system clock for DAC and ADC */
 114         err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
 115                                             SND_SOC_CLOCK_IN);
 116
 117         return err;
 118 }
 119
 120 static struct snd_soc_ops n810_ops = {
 121         .startup = n810_startup,
 122         .hw_params = n810_hw_params,
 123         .shutdown = n810_shutdown,
 124 };
 125
 126 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 127                         struct snd_ctl_elem_value *ucontrol)
 128 {
 129         ucontrol->value.integer.value[0] = n810_spk_func;
 130
 131         return 0;
 132 }
 133
 134 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 135                         struct snd_ctl_elem_value *ucontrol)
 136 {
 137         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 138
 139         if (n810_spk_func == ucontrol->value.integer.value[0])
 140                 return 0;
 141
 142         n810_spk_func = ucontrol->value.integer.value[0];
 143         n810_ext_control(codec);
 144
 145         return 1;
 146 }
 147
 148 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 149                          struct snd_ctl_elem_value *ucontrol)
 150 {
 151         ucontrol->value.integer.value[0] = n810_jack_func;
 152
 153         return 0;
 154 }
 155
 156 static int n810_set_jack(struct snd_kcontrol *kcontrol,
 157                          struct snd_ctl_elem_value *ucontrol)
 158 {
 159         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 160
 161         if (n810_jack_func == ucontrol->value.integer.value[0])
 162                 return 0;
 163
 164         n810_jack_func = ucontrol->value.integer.value[0];
 165         n810_ext_control(codec);
 166
 167         return 1;
 168 }
 169
 170 static int n810_get_input(struct snd_kcontrol *kcontrol,
 171                           struct snd_ctl_elem_value *ucontrol)
 172 {
 173         ucontrol->value.integer.value[0] = n810_dmic_func;
 174
 175         return 0;
 176 }
 177
 178 static int n810_set_input(struct snd_kcontrol *kcontrol,
 179                           struct snd_ctl_elem_value *ucontrol)
 180 {
 181         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 182
 183         if (n810_dmic_func == ucontrol->value.integer.value[0])
 184                 return 0;
 185
 186         n810_dmic_func = ucontrol->value.integer.value[0];
 187         n810_ext_control(codec);
 188
 189         return 1;
 190 }
 191
 192 static int n810_spk_event(struct snd_soc_dapm_widget *w,
 193                           struct snd_kcontrol *k, int event)
 194 {
 195         if (SND_SOC_DAPM_EVENT_ON(event))
 196                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
 197         else
 198                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
 199
 200         return 0;
 201 }
 202
 203 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 204                            struct snd_kcontrol *k, int event)
 205 {
 206         if (SND_SOC_DAPM_EVENT_ON(event))
 207                 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
 208         else
 209                 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
 210
 211         return 0;
 212 }
 213
 214 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 215         SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 216         SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 217         SND_SOC_DAPM_MIC("DMic", NULL),
 218 };
 219
 220 static const struct snd_soc_dapm_route audio_map[] = {
 221         {"Headphone Jack", NULL, "HPLOUT"},
 222         {"Headphone Jack", NULL, "HPROUT"},
 223
 224         {"Ext Spk", NULL, "LLOUT"},
 225         {"Ext Spk", NULL, "RLOUT"},
 226
 227         {"DMic Rate 64", NULL, "Mic Bias 2V"},
 228         {"Mic Bias 2V", NULL, "DMic"},
 229 };
 230
 231 static const char *spk_function[] = {"Off", "On"};
 232 static const char *jack_function[] = {"Off", "Headphone"};
 233 static const char *input_function[] = {"ADC", "Digital Mic"};
 234 static const struct soc_enum n810_enum[] = {
 235         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 236         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 237         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 238 };
 239
 240 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 241         SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 242                      n810_get_spk, n810_set_spk),
 243         SOC_ENUM_EXT("Jack Function", n810_enum[1],
 244                      n810_get_jack, n810_set_jack),
 245         SOC_ENUM_EXT("Input Select",  n810_enum[2],
 246                      n810_get_input, n810_set_input),
 247 };
 248
 249 static int n810_aic33_init(struct snd_soc_codec *codec)
 250 {
 251         int err;
 252
 253         /* Not connected */
 254         snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
 255         snd_soc_dapm_nc_pin(codec, "HPLCOM");
 256         snd_soc_dapm_nc_pin(codec, "HPRCOM");
 257
 258         /* Add N810 specific controls */
 259         err = snd_soc_add_controls(codec, aic33_n810_controls,
 260                                 ARRAY_SIZE(aic33_n810_controls));
 261         if (err < 0)
 262                 return err;
 263
 264         /* Add N810 specific widgets */
 265         snd_soc_dapm_new_controls(codec, aic33_dapm_widgets,
 266                                   ARRAY_SIZE(aic33_dapm_widgets));
 267
 268         /* Set up N810 specific audio path audio_map */
 269         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 270
 271         snd_soc_dapm_sync(codec);
 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 = &omap_mcbsp_dai[0],
 281         .codec_dai = &aic3x_dai,
 282         .init = n810_aic33_init,
 283         .ops = &n810_ops,
 284 };
 285
 286 /* Audio machine driver */
 287 static struct snd_soc_card snd_soc_n810 = {
 288         .name = "N810",
 289         .platform = &omap_soc_platform,
 290         .dai_link = &n810_dai,
 291         .num_links = 1,
 292 };
 293
 294 /* Audio private data */
 295 static struct aic3x_setup_data n810_aic33_setup = {
 296         .i2c_bus = 2,
 297         .i2c_address = 0x18,
 298         .gpio_func[0] = AIC3X_GPIO1_FUNC_DISABLED,
 299         .gpio_func[1] = AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT,
 300 };
 301
 302 /* Audio subsystem */
 303 static struct snd_soc_device n810_snd_devdata = {
 304         .card = &snd_soc_n810,
 305         .codec_dev = &soc_codec_dev_aic3x,
 306         .codec_data = &n810_aic33_setup,
 307 };
 308
 309 static struct platform_device *n810_snd_device;
 310
 311 static int __init n810_soc_init(void)
 312 {
 313         int err;
 314         struct device *dev;
 315
 316         if (!(machine_is_nokia_n810() || machine_is_nokia_n810_wimax()))
 317                 return -ENODEV;
 318
 319         n810_snd_device = platform_device_alloc("soc-audio", -1);
 320         if (!n810_snd_device)
 321                 return -ENOMEM;
 322
 323         platform_set_drvdata(n810_snd_device, &n810_snd_devdata);
 324         n810_snd_devdata.dev = &n810_snd_device->dev;
 325         *(unsigned int *)n810_dai.cpu_dai->private_data = 1; /* McBSP2 */
 326         err = platform_device_add(n810_snd_device);
 327         if (err)
 328                 goto err1;
 329
 330         dev = &n810_snd_device->dev;
 331
 332         sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 333         if (IS_ERR(sys_clkout2_src)) {
 334                 dev_err(dev, "Could not get sys_clkout2_src clock\n");
 335                 err = PTR_ERR(sys_clkout2_src);
 336                 goto err2;
 337         }
 338         sys_clkout2 = clk_get(dev, "sys_clkout2");
 339         if (IS_ERR(sys_clkout2)) {
 340                 dev_err(dev, "Could not get sys_clkout2\n");
 341                 err = PTR_ERR(sys_clkout2);
 342                 goto err3;
 343         }
 344         /*
 345          * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 346          * 96 MHz as its parent in order to get 12 MHz
 347          */
 348         func96m_clk = clk_get(dev, "func_96m_ck");
 349         if (IS_ERR(func96m_clk)) {
 350                 dev_err(dev, "Could not get func 96M clock\n");
 351                 err = PTR_ERR(func96m_clk);
 352                 goto err4;
 353         }
 354         clk_set_parent(sys_clkout2_src, func96m_clk);
 355         clk_set_rate(sys_clkout2, 12000000);
 356
 357         if (gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0)
 358                 BUG();
 359         if (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0)
 360                 BUG();
 361         gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
 362         gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
 363
 364         return 0;
 365 err4:
 366         clk_put(sys_clkout2);
 367 err3:
 368         clk_put(sys_clkout2_src);
 369 err2:
 370         platform_device_del(n810_snd_device);
 371 err1:
 372         platform_device_put(n810_snd_device);
 373
 374         return err;
 375 }
 376
 377 static void __exit n810_soc_exit(void)
 378 {
 379         gpio_free(N810_SPEAKER_AMP_GPIO);
 380         gpio_free(N810_HEADSET_AMP_GPIO);
 381         clk_put(sys_clkout2_src);
 382         clk_put(sys_clkout2);
 383         clk_put(func96m_clk);
 384
 385         platform_device_unregister(n810_snd_device);
 386 }
 387
 388 module_init(n810_soc_init);
 389 module_exit(n810_soc_exit);
 390
 391 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@nokia.com>");
 392 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 393 MODULE_LICENSE("GPL");