release/src-rt-6.x.4708/linux/linux-2.6.36/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         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(codec, "Ext Spk");
  76         else
  77                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  78
  79         if (hp)
  80                 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  81         else
  82                 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
  83         if (line1l)
  84                 snd_soc_dapm_enable_pin(codec, "LINE1L");
  85         else
  86                 snd_soc_dapm_disable_pin(codec, "LINE1L");
  87
  88         if (n810_dmic_func)
  89                 snd_soc_dapm_enable_pin(codec, "DMic");
  90         else
  91                 snd_soc_dapm_disable_pin(codec, "DMic");
  92
  93         snd_soc_dapm_sync(codec);
  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->socdev->card->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->dai->codec_dai;
 119         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
 120         int err;
 121
 122         /* Set codec DAI configuration */
 123         err = snd_soc_dai_set_fmt(codec_dai,
 124                                          SND_SOC_DAIFMT_I2S |
 125                                          SND_SOC_DAIFMT_NB_NF |
 126                                          SND_SOC_DAIFMT_CBM_CFM);
 127         if (err < 0)
 128                 return err;
 129
 130         /* Set cpu DAI configuration */
 131         err = snd_soc_dai_set_fmt(cpu_dai,
 132                                        SND_SOC_DAIFMT_I2S |
 133                                        SND_SOC_DAIFMT_NB_NF |
 134                                        SND_SOC_DAIFMT_CBM_CFM);
 135         if (err < 0)
 136                 return err;
 137
 138         /* Set the codec system clock for DAC and ADC */
 139         err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
 140                                             SND_SOC_CLOCK_IN);
 141
 142         return err;
 143 }
 144
 145 static struct snd_soc_ops n810_ops = {
 146         .startup = n810_startup,
 147         .hw_params = n810_hw_params,
 148         .shutdown = n810_shutdown,
 149 };
 150
 151 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 152                         struct snd_ctl_elem_value *ucontrol)
 153 {
 154         ucontrol->value.integer.value[0] = n810_spk_func;
 155
 156         return 0;
 157 }
 158
 159 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 160                         struct snd_ctl_elem_value *ucontrol)
 161 {
 162         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 163
 164         if (n810_spk_func == ucontrol->value.integer.value[0])
 165                 return 0;
 166
 167         n810_spk_func = ucontrol->value.integer.value[0];
 168         n810_ext_control(codec);
 169
 170         return 1;
 171 }
 172
 173 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 174                          struct snd_ctl_elem_value *ucontrol)
 175 {
 176         ucontrol->value.integer.value[0] = n810_jack_func;
 177
 178         return 0;
 179 }
 180
 181 static int n810_set_jack(struct snd_kcontrol *kcontrol,
 182                          struct snd_ctl_elem_value *ucontrol)
 183 {
 184         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 185
 186         if (n810_jack_func == ucontrol->value.integer.value[0])
 187                 return 0;
 188
 189         n810_jack_func = ucontrol->value.integer.value[0];
 190         n810_ext_control(codec);
 191
 192         return 1;
 193 }
 194
 195 static int n810_get_input(struct snd_kcontrol *kcontrol,
 196                           struct snd_ctl_elem_value *ucontrol)
 197 {
 198         ucontrol->value.integer.value[0] = n810_dmic_func;
 199
 200         return 0;
 201 }
 202
 203 static int n810_set_input(struct snd_kcontrol *kcontrol,
 204                           struct snd_ctl_elem_value *ucontrol)
 205 {
 206         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 207
 208         if (n810_dmic_func == ucontrol->value.integer.value[0])
 209                 return 0;
 210
 211         n810_dmic_func = ucontrol->value.integer.value[0];
 212         n810_ext_control(codec);
 213
 214         return 1;
 215 }
 216
 217 static int n810_spk_event(struct snd_soc_dapm_widget *w,
 218                           struct snd_kcontrol *k, int event)
 219 {
 220         if (SND_SOC_DAPM_EVENT_ON(event))
 221                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
 222         else
 223                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
 224
 225         return 0;
 226 }
 227
 228 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 229                            struct snd_kcontrol *k, int event)
 230 {
 231         if (SND_SOC_DAPM_EVENT_ON(event))
 232                 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
 233         else
 234                 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
 235
 236         return 0;
 237 }
 238
 239 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 240         SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 241         SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 242         SND_SOC_DAPM_MIC("DMic", NULL),
 243 };
 244
 245 static const struct snd_soc_dapm_route audio_map[] = {
 246         {"Headphone Jack", NULL, "HPLOUT"},
 247         {"Headphone Jack", NULL, "HPROUT"},
 248
 249         {"Ext Spk", NULL, "LLOUT"},
 250         {"Ext Spk", NULL, "RLOUT"},
 251
 252         {"DMic Rate 64", NULL, "Mic Bias 2V"},
 253         {"Mic Bias 2V", NULL, "DMic"},
 254 };
 255
 256 static const char *spk_function[] = {"Off", "On"};
 257 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
 258 static const char *input_function[] = {"ADC", "Digital Mic"};
 259 static const struct soc_enum n810_enum[] = {
 260         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 261         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 262         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 263 };
 264
 265 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 266         SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 267                      n810_get_spk, n810_set_spk),
 268         SOC_ENUM_EXT("Jack Function", n810_enum[1],
 269                      n810_get_jack, n810_set_jack),
 270         SOC_ENUM_EXT("Input Select",  n810_enum[2],
 271                      n810_get_input, n810_set_input),
 272 };
 273
 274 static int n810_aic33_init(struct snd_soc_codec *codec)
 275 {
 276         int err;
 277
 278         /* Not connected */
 279         snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
 280         snd_soc_dapm_nc_pin(codec, "HPLCOM");
 281         snd_soc_dapm_nc_pin(codec, "HPRCOM");
 282         snd_soc_dapm_nc_pin(codec, "MIC3L");
 283         snd_soc_dapm_nc_pin(codec, "MIC3R");
 284         snd_soc_dapm_nc_pin(codec, "LINE1R");
 285         snd_soc_dapm_nc_pin(codec, "LINE2L");
 286         snd_soc_dapm_nc_pin(codec, "LINE2R");
 287
 288         /* Add N810 specific controls */
 289         err = snd_soc_add_controls(codec, aic33_n810_controls,
 290                                 ARRAY_SIZE(aic33_n810_controls));
 291         if (err < 0)
 292                 return err;
 293
 294         /* Add N810 specific widgets */
 295         snd_soc_dapm_new_controls(codec, aic33_dapm_widgets,
 296                                   ARRAY_SIZE(aic33_dapm_widgets));
 297
 298         /* Set up N810 specific audio path audio_map */
 299         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 300
 301         snd_soc_dapm_sync(codec);
 302
 303         return 0;
 304 }
 305
 306 /* Digital audio interface glue - connects codec <--> CPU */
 307 static struct snd_soc_dai_link n810_dai = {
 308         .name = "TLV320AIC33",
 309         .stream_name = "AIC33",
 310         .cpu_dai = &omap_mcbsp_dai[0],
 311         .codec_dai = &aic3x_dai,
 312         .init = n810_aic33_init,
 313         .ops = &n810_ops,
 314 };
 315
 316 /* Audio machine driver */
 317 static struct snd_soc_card snd_soc_n810 = {
 318         .name = "N810",
 319         .platform = &omap_soc_platform,
 320         .dai_link = &n810_dai,
 321         .num_links = 1,
 322 };
 323
 324 /* Audio private data */
 325 static struct aic3x_setup_data n810_aic33_setup = {
 326         .gpio_func[0] = AIC3X_GPIO1_FUNC_DISABLED,
 327         .gpio_func[1] = AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT,
 328 };
 329
 330 /* Audio subsystem */
 331 static struct snd_soc_device n810_snd_devdata = {
 332         .card = &snd_soc_n810,
 333         .codec_dev = &soc_codec_dev_aic3x,
 334         .codec_data = &n810_aic33_setup,
 335 };
 336
 337 static struct platform_device *n810_snd_device;
 338
 339 /* temporary i2c device creation until this can be moved into the machine
 340  * support file.
 341 */
 342 static struct i2c_board_info i2c_device[] = {
 343         { I2C_BOARD_INFO("tlv320aic3x", 0x1b), }
 344 };
 345
 346 static int __init n810_soc_init(void)
 347 {
 348         int err;
 349         struct device *dev;
 350
 351         if (!(machine_is_nokia_n810() || machine_is_nokia_n810_wimax()))
 352                 return -ENODEV;
 353
 354         i2c_register_board_info(1, i2c_device, ARRAY_SIZE(i2c_device));
 355
 356         n810_snd_device = platform_device_alloc("soc-audio", -1);
 357         if (!n810_snd_device)
 358                 return -ENOMEM;
 359
 360         platform_set_drvdata(n810_snd_device, &n810_snd_devdata);
 361         n810_snd_devdata.dev = &n810_snd_device->dev;
 362         *(unsigned int *)n810_dai.cpu_dai->private_data = 1; /* McBSP2 */
 363         err = platform_device_add(n810_snd_device);
 364         if (err)
 365                 goto err1;
 366
 367         dev = &n810_snd_device->dev;
 368
 369         sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 370         if (IS_ERR(sys_clkout2_src)) {
 371                 dev_err(dev, "Could not get sys_clkout2_src clock\n");
 372                 err = PTR_ERR(sys_clkout2_src);
 373                 goto err2;
 374         }
 375         sys_clkout2 = clk_get(dev, "sys_clkout2");
 376         if (IS_ERR(sys_clkout2)) {
 377                 dev_err(dev, "Could not get sys_clkout2\n");
 378                 err = PTR_ERR(sys_clkout2);
 379                 goto err3;
 380         }
 381         /*
 382          * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 383          * 96 MHz as its parent in order to get 12 MHz
 384          */
 385         func96m_clk = clk_get(dev, "func_96m_ck");
 386         if (IS_ERR(func96m_clk)) {
 387                 dev_err(dev, "Could not get func 96M clock\n");
 388                 err = PTR_ERR(func96m_clk);
 389                 goto err4;
 390         }
 391         clk_set_parent(sys_clkout2_src, func96m_clk);
 392         clk_set_rate(sys_clkout2, 12000000);
 393
 394         BUG_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
 395                (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0));
 396
 397         gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
 398         gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
 399
 400         return 0;
 401 err4:
 402         clk_put(sys_clkout2);
 403 err3:
 404         clk_put(sys_clkout2_src);
 405 err2:
 406         platform_device_del(n810_snd_device);
 407 err1:
 408         platform_device_put(n810_snd_device);
 409
 410         return err;
 411 }
 412
 413 static void __exit n810_soc_exit(void)
 414 {
 415         gpio_free(N810_SPEAKER_AMP_GPIO);
 416         gpio_free(N810_HEADSET_AMP_GPIO);
 417         clk_put(sys_clkout2_src);
 418         clk_put(sys_clkout2);
 419         clk_put(func96m_clk);
 420
 421         platform_device_unregister(n810_snd_device);
 422 }
 423
 424 module_init(n810_soc_init);
 425 module_exit(n810_soc_exit);
 426
 427 MODULE_AUTHOR("Jarkko Nikula <jhnikula@gmail.com>");
 428 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 429 MODULE_LICENSE("GPL");