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         snd_soc_dapm_mutex_lock(dapm);
  72
  73         if (n810_spk_func)
  74                 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
  75         else
  76                 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
  77
  78         if (hp)
  79                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
  80         else
  81                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
  82         if (line1l)
  83                 snd_soc_dapm_enable_pin_unlocked(dapm, "LINE1L");
  84         else
  85                 snd_soc_dapm_disable_pin_unlocked(dapm, "LINE1L");
  86
  87         if (n810_dmic_func)
  88                 snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
  89         else
  90                 snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
  91
  92         snd_soc_dapm_sync_unlocked(dapm);
  93
  94         snd_soc_dapm_mutex_unlock(dapm);
  95 }
  96
  97 static int n810_startup(struct snd_pcm_substream *substream)
  98 {
  99         struct snd_pcm_runtime *runtime = substream->runtime;
 100         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 101
 102         snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
 103
 104         n810_ext_control(&rtd->card->dapm);
 105         return clk_prepare_enable(sys_clkout2);
 106 }
 107
 108 static void n810_shutdown(struct snd_pcm_substream *substream)
 109 {
 110         clk_disable_unprepare(sys_clkout2);
 111 }
 112
 113 static int n810_hw_params(struct snd_pcm_substream *substream,
 114         struct snd_pcm_hw_params *params)
 115 {
 116         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 117         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 118         int err;
 119
 120         /* Set the codec system clock for DAC and ADC */
 121         err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
 122                                             SND_SOC_CLOCK_IN);
 123
 124         return err;
 125 }
 126
 127 static const struct snd_soc_ops n810_ops = {
 128         .startup = n810_startup,
 129         .hw_params = n810_hw_params,
 130         .shutdown = n810_shutdown,
 131 };
 132
 133 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 134                         struct snd_ctl_elem_value *ucontrol)
 135 {
 136         ucontrol->value.enumerated.item[0] = n810_spk_func;
 137
 138         return 0;
 139 }
 140
 141 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 142                         struct snd_ctl_elem_value *ucontrol)
 143 {
 144         struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
 145
 146         if (n810_spk_func == ucontrol->value.enumerated.item[0])
 147                 return 0;
 148
 149         n810_spk_func = ucontrol->value.enumerated.item[0];
 150         n810_ext_control(&card->dapm);
 151
 152         return 1;
 153 }
 154
 155 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 156                          struct snd_ctl_elem_value *ucontrol)
 157 {
 158         ucontrol->value.enumerated.item[0] = n810_jack_func;
 159
 160         return 0;
 161 }
 162
 163 static int n810_set_jack(struct snd_kcontrol *kcontrol,
 164                          struct snd_ctl_elem_value *ucontrol)
 165 {
 166         struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
 167
 168         if (n810_jack_func == ucontrol->value.enumerated.item[0])
 169                 return 0;
 170
 171         n810_jack_func = ucontrol->value.enumerated.item[0];
 172         n810_ext_control(&card->dapm);
 173
 174         return 1;
 175 }
 176
 177 static int n810_get_input(struct snd_kcontrol *kcontrol,
 178                           struct snd_ctl_elem_value *ucontrol)
 179 {
 180         ucontrol->value.enumerated.item[0] = n810_dmic_func;
 181
 182         return 0;
 183 }
 184
 185 static int n810_set_input(struct snd_kcontrol *kcontrol,
 186                           struct snd_ctl_elem_value *ucontrol)
 187 {
 188         struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);
 189
 190         if (n810_dmic_func == ucontrol->value.enumerated.item[0])
 191                 return 0;
 192
 193         n810_dmic_func = ucontrol->value.enumerated.item[0];
 194         n810_ext_control(&card->dapm);
 195
 196         return 1;
 197 }
 198
 199 static int n810_spk_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_SPEAKER_AMP_GPIO, 1);
 204         else
 205                 gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);
 206
 207         return 0;
 208 }
 209
 210 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 211                            struct snd_kcontrol *k, int event)
 212 {
 213         if (SND_SOC_DAPM_EVENT_ON(event))
 214                 gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
 215         else
 216                 gpio_set_value(N810_HEADSET_AMP_GPIO, 0);
 217
 218         return 0;
 219 }
 220
 221 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 222         SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 223         SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 224         SND_SOC_DAPM_MIC("DMic", NULL),
 225 };
 226
 227 static const struct snd_soc_dapm_route audio_map[] = {
 228         {"Headphone Jack", NULL, "HPLOUT"},
 229         {"Headphone Jack", NULL, "HPROUT"},
 230
 231         {"Ext Spk", NULL, "LLOUT"},
 232         {"Ext Spk", NULL, "RLOUT"},
 233
 234         {"DMic Rate 64", NULL, "Mic Bias"},
 235         {"Mic Bias", NULL, "DMic"},
 236 };
 237
 238 static const char *spk_function[] = {"Off", "On"};
 239 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
 240 static const char *input_function[] = {"ADC", "Digital Mic"};
 241 static const struct soc_enum n810_enum[] = {
 242         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 243         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 244         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 245 };
 246
 247 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 248         SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 249                      n810_get_spk, n810_set_spk),
 250         SOC_ENUM_EXT("Jack Function", n810_enum[1],
 251                      n810_get_jack, n810_set_jack),
 252         SOC_ENUM_EXT("Input Select",  n810_enum[2],
 253                      n810_get_input, n810_set_input),
 254 };
 255
 256 /* Digital audio interface glue - connects codec <--> CPU */
 257 static struct snd_soc_dai_link n810_dai = {
 258         .name = "TLV320AIC33",
 259         .stream_name = "AIC33",
 260         .cpu_dai_name = "omap-mcbsp.2",
 261         .platform_name = "omap-mcbsp.2",
 262         .codec_name = "tlv320aic3x-codec.2-0018",
 263         .codec_dai_name = "tlv320aic3x-hifi",
 264         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 265                    SND_SOC_DAIFMT_CBM_CFM,
 266         .ops = &n810_ops,
 267 };
 268
 269 /* Audio machine driver */
 270 static struct snd_soc_card snd_soc_n810 = {
 271         .name = "N810",
 272         .owner = THIS_MODULE,
 273         .dai_link = &n810_dai,
 274         .num_links = 1,
 275
 276         .controls = aic33_n810_controls,
 277         .num_controls = ARRAY_SIZE(aic33_n810_controls),
 278         .dapm_widgets = aic33_dapm_widgets,
 279         .num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
 280         .dapm_routes = audio_map,
 281         .num_dapm_routes = ARRAY_SIZE(audio_map),
 282         .fully_routed = true,
 283 };
 284
 285 static struct platform_device *n810_snd_device;
 286
 287 static int __init n810_soc_init(void)
 288 {
 289         int err;
 290         struct device *dev;
 291
 292         if (!of_have_populated_dt() ||
 293             (!of_machine_is_compatible("nokia,n810") &&
 294              !of_machine_is_compatible("nokia,n810-wimax")))
 295                 return -ENODEV;
 296
 297         n810_snd_device = platform_device_alloc("soc-audio", -1);
 298         if (!n810_snd_device)
 299                 return -ENOMEM;
 300
 301         platform_set_drvdata(n810_snd_device, &snd_soc_n810);
 302         err = platform_device_add(n810_snd_device);
 303         if (err)
 304                 goto err1;
 305
 306         dev = &n810_snd_device->dev;
 307
 308         sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 309         if (IS_ERR(sys_clkout2_src)) {
 310                 dev_err(dev, "Could not get sys_clkout2_src clock\n");
 311                 err = PTR_ERR(sys_clkout2_src);
 312                 goto err2;
 313         }
 314         sys_clkout2 = clk_get(dev, "sys_clkout2");
 315         if (IS_ERR(sys_clkout2)) {
 316                 dev_err(dev, "Could not get sys_clkout2\n");
 317                 err = PTR_ERR(sys_clkout2);
 318                 goto err3;
 319         }
 320         /*
 321          * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 322          * 96 MHz as its parent in order to get 12 MHz
 323          */
 324         func96m_clk = clk_get(dev, "func_96m_ck");
 325         if (IS_ERR(func96m_clk)) {
 326                 dev_err(dev, "Could not get func 96M clock\n");
 327                 err = PTR_ERR(func96m_clk);
 328                 goto err4;
 329         }
 330         clk_set_parent(sys_clkout2_src, func96m_clk);
 331         clk_set_rate(sys_clkout2, 12000000);
 332
 333         if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
 334                     (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) {
 335                 err = -EINVAL;
 336                 goto err4;
 337         }
 338
 339         gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
 340         gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);
 341
 342         return 0;
 343 err4:
 344         clk_put(sys_clkout2);
 345 err3:
 346         clk_put(sys_clkout2_src);
 347 err2:
 348         platform_device_del(n810_snd_device);
 349 err1:
 350         platform_device_put(n810_snd_device);
 351
 352         return err;
 353 }
 354
 355 static void __exit n810_soc_exit(void)
 356 {
 357         gpio_free(N810_SPEAKER_AMP_GPIO);
 358         gpio_free(N810_HEADSET_AMP_GPIO);
 359         clk_put(sys_clkout2_src);
 360         clk_put(sys_clkout2);
 361         clk_put(func96m_clk);
 362
 363         platform_device_unregister(n810_snd_device);
 364 }
 365
 366 module_init(n810_soc_init);
 367 module_exit(n810_soc_exit);
 368
 369 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
 370 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 371 MODULE_LICENSE("GPL");