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