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_soc_pcm_runtime *rtd = substream->private_data;
  74         struct snd_soc_codec *codec = rtd->socdev->codec;
  75
  76         n810_ext_control(codec);
  77         return clk_enable(sys_clkout2);
  78 }
  79
  80 static void n810_shutdown(struct snd_pcm_substream *substream)
  81 {
  82         clk_disable(sys_clkout2);
  83 }
  84
  85 static int n810_hw_params(struct snd_pcm_substream *substream,
  86         struct snd_pcm_hw_params *params)
  87 {
  88         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  89         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  90         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  91         int err;
  92
  93         /* Set codec DAI configuration */
  94         err = snd_soc_dai_set_fmt(codec_dai,
  95                                          SND_SOC_DAIFMT_I2S |
  96                                          SND_SOC_DAIFMT_NB_NF |
  97                                          SND_SOC_DAIFMT_CBM_CFM);
  98         if (err < 0)
  99                 return err;
 100
 101         /* Set cpu DAI configuration */
 102         err = snd_soc_dai_set_fmt(cpu_dai,
 103                                        SND_SOC_DAIFMT_I2S |
 104                                        SND_SOC_DAIFMT_NB_NF |
 105                                        SND_SOC_DAIFMT_CBM_CFM);
 106         if (err < 0)
 107                 return err;
 108
 109         /* Set the codec system clock for DAC and ADC */
 110         err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
 111                                             SND_SOC_CLOCK_IN);
 112
 113         return err;
 114 }
 115
 116 static struct snd_soc_ops n810_ops = {
 117         .startup = n810_startup,
 118         .hw_params = n810_hw_params,
 119         .shutdown = n810_shutdown,
 120 };
 121
 122 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 123                         struct snd_ctl_elem_value *ucontrol)
 124 {
 125         ucontrol->value.integer.value[0] = n810_spk_func;
 126
 127         return 0;
 128 }
 129
 130 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 131                         struct snd_ctl_elem_value *ucontrol)
 132 {
 133         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 134
 135         if (n810_spk_func == ucontrol->value.integer.value[0])
 136                 return 0;
 137
 138         n810_spk_func = ucontrol->value.integer.value[0];
 139         n810_ext_control(codec);
 140
 141         return 1;
 142 }
 143
 144 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 145                          struct snd_ctl_elem_value *ucontrol)
 146 {
 147         ucontrol->value.integer.value[0] = n810_jack_func;
 148
 149         return 0;
 150 }
 151
 152 static int n810_set_jack(struct snd_kcontrol *kcontrol,
 153                          struct snd_ctl_elem_value *ucontrol)
 154 {
 155         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 156
 157         if (n810_jack_func == ucontrol->value.integer.value[0])
 158                 return 0;
 159
 160         n810_jack_func = ucontrol->value.integer.value[0];
 161         n810_ext_control(codec);
 162
 163         return 1;
 164 }
 165
 166 static int n810_get_input(struct snd_kcontrol *kcontrol,
 167                           struct snd_ctl_elem_value *ucontrol)
 168 {
 169         ucontrol->value.integer.value[0] = n810_dmic_func;
 170
 171         return 0;
 172 }
 173
 174 static int n810_set_input(struct snd_kcontrol *kcontrol,
 175                           struct snd_ctl_elem_value *ucontrol)
 176 {
 177         struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
 178
 179         if (n810_dmic_func == ucontrol->value.integer.value[0])
 180                 return 0;
 181
 182         n810_dmic_func = ucontrol->value.integer.value[0];
 183         n810_ext_control(codec);
 184
 185         return 1;
 186 }
 187
 188 static int n810_spk_event(struct snd_soc_dapm_widget *w,
 189                           struct snd_kcontrol *k, int event)
 190 {
 191         if (SND_SOC_DAPM_EVENT_ON(event))
 192                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
 193         else
 194                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
 195
 196         return 0;
 197 }
 198
 199 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 200                            struct snd_kcontrol *k, int event)
 201 {
 202         if (SND_SOC_DAPM_EVENT_ON(event))
 203                 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
 204         else
 205                 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
 206
 207         return 0;
 208 }
 209
 210 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 211         SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 212         SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 213         SND_SOC_DAPM_MIC("DMic", NULL),
 214 };
 215
 216 static const struct snd_soc_dapm_route audio_map[] = {
 217         {"Headphone Jack", NULL, "HPLOUT"},
 218         {"Headphone Jack", NULL, "HPROUT"},
 219
 220         {"Ext Spk", NULL, "LLOUT"},
 221         {"Ext Spk", NULL, "RLOUT"},
 222
 223         {"DMic Rate 64", NULL, "Mic Bias 2V"},
 224         {"Mic Bias 2V", NULL, "DMic"},
 225 };
 226
 227 static const char *spk_function[] = {"Off", "On"};
 228 static const char *jack_function[] = {"Off", "Headphone"};
 229 static const char *input_function[] = {"ADC", "Digital Mic"};
 230 static const struct soc_enum n810_enum[] = {
 231         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 232         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 233         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 234 };
 235
 236 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 237         SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 238                      n810_get_spk, n810_set_spk),
 239         SOC_ENUM_EXT("Jack Function", n810_enum[1],
 240                      n810_get_jack, n810_set_jack),
 241         SOC_ENUM_EXT("Input Select",  n810_enum[2],
 242                      n810_get_input, n810_set_input),
 243 };
 244
 245 static int n810_aic33_init(struct snd_soc_codec *codec)
 246 {
 247         int i, err;
 248
 249         /* Not connected */
 250         snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
 251         snd_soc_dapm_nc_pin(codec, "HPLCOM");
 252         snd_soc_dapm_nc_pin(codec, "HPRCOM");
 253
 254         /* Add N810 specific controls */
 255         for (i = 0; i < ARRAY_SIZE(aic33_n810_controls); i++) {
 256                 err = snd_ctl_add(codec->card,
 257                         snd_soc_cnew(&aic33_n810_controls[i], codec, NULL));
 258                 if (err < 0)
 259                         return err;
 260         }
 261
 262         /* Add N810 specific widgets */
 263         snd_soc_dapm_new_controls(codec, aic33_dapm_widgets,
 264                                   ARRAY_SIZE(aic33_dapm_widgets));
 265
 266         /* Set up N810 specific audio path audio_map */
 267         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 268
 269         snd_soc_dapm_sync(codec);
 270
 271         return 0;
 272 }
 273
 274 /* Digital audio interface glue - connects codec <--> CPU */
 275 static struct snd_soc_dai_link n810_dai = {
 276         .name = "TLV320AIC33",
 277         .stream_name = "AIC33",
 278         .cpu_dai = &omap_mcbsp_dai[0],
 279         .codec_dai = &aic3x_dai,
 280         .init = n810_aic33_init,
 281         .ops = &n810_ops,
 282 };
 283
 284 /* Audio machine driver */
 285 static struct snd_soc_machine snd_soc_machine_n810 = {
 286         .name = "N810",
 287         .dai_link = &n810_dai,
 288         .num_links = 1,
 289 };
 290
 291 /* Audio private data */
 292 static struct aic3x_setup_data n810_aic33_setup = {
 293         .i2c_bus = 2,
 294         .i2c_address = 0x18,
 295         .gpio_func[0] = AIC3X_GPIO1_FUNC_DISABLED,
 296         .gpio_func[1] = AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT,
 297 };
 298
 299 /* Audio subsystem */
 300 static struct snd_soc_device n810_snd_devdata = {
 301         .machine = &snd_soc_machine_n810,
 302         .platform = &omap_soc_platform,
 303         .codec_dev = &soc_codec_dev_aic3x,
 304         .codec_data = &n810_aic33_setup,
 305 };
 306
 307 static struct platform_device *n810_snd_device;
 308
 309 static int __init n810_soc_init(void)
 310 {
 311         int err;
 312         struct device *dev;
 313
 314         if (!(machine_is_nokia_n810() || machine_is_nokia_n810_wimax()))
 315                 return -ENODEV;
 316
 317         n810_snd_device = platform_device_alloc("soc-audio", -1);
 318         if (!n810_snd_device)
 319                 return -ENOMEM;
 320
 321         platform_set_drvdata(n810_snd_device, &n810_snd_devdata);
 322         n810_snd_devdata.dev = &n810_snd_device->dev;
 323         *(unsigned int *)n810_dai.cpu_dai->private_data = 1; /* McBSP2 */
 324         err = platform_device_add(n810_snd_device);
 325         if (err)
 326                 goto err1;
 327
 328         dev = &n810_snd_device->dev;
 329
 330         sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 331         if (IS_ERR(sys_clkout2_src)) {
 332                 dev_err(dev, "Could not get sys_clkout2_src clock\n");
 333                 err = PTR_ERR(sys_clkout2_src);
 334                 goto err2;
 335         }
 336         sys_clkout2 = clk_get(dev, "sys_clkout2");
 337         if (IS_ERR(sys_clkout2)) {
 338                 dev_err(dev, "Could not get sys_clkout2\n");
 339                 err = PTR_ERR(sys_clkout2);
 340                 goto err3;
 341         }
 342         /*
 343          * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 344          * 96 MHz as its parent in order to get 12 MHz
 345          */
 346         func96m_clk = clk_get(dev, "func_96m_ck");
 347         if (IS_ERR(func96m_clk)) {
 348                 dev_err(dev, "Could not get func 96M clock\n");
 349                 err = PTR_ERR(func96m_clk);
 350                 goto err4;
 351         }
 352         clk_set_parent(sys_clkout2_src, func96m_clk);
 353         clk_set_rate(sys_clkout2, 12000000);
 354
 355         if (gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0)
 356                 BUG();
 357         if (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0)
 358                 BUG();
 359         gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
 360         gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
 361
 362         return 0;
 363 err4:
 364         clk_put(sys_clkout2);
 365 err3:
 366         clk_put(sys_clkout2_src);
 367 err2:
 368         platform_device_del(n810_snd_device);
 369 err1:
 370         platform_device_put(n810_snd_device);
 371
 372         return err;
 373 }
 374
 375 static void __exit n810_soc_exit(void)
 376 {
 377         gpio_free(N810_SPEAKER_AMP_GPIO);
 378         gpio_free(N810_HEADSET_AMP_GPIO);
 379         clk_put(sys_clkout2_src);
 380         clk_put(sys_clkout2);
 381         clk_put(func96m_clk);
 382
 383         platform_device_unregister(n810_snd_device);
 384 }
 385
 386 module_init(n810_soc_init);
 387 module_exit(n810_soc_exit);
 388
 389 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@nokia.com>");
 390 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 391 MODULE_LICENSE("GPL");