sound/soc/omap/rx51.c

   1 /*
   2  * rx51.c  --  SoC audio for Nokia RX-51
   3  *
   4  * Copyright (C) 2008 - 2009 Nokia Corporation
   5  *
   6  * Contact: Peter Ujfalusi <peter.ujfalusi@nokia.com>
   7  *          Eduardo Valentin <eduardo.valentin@nokia.com>
   8  *          Jarkko Nikula <jhnikula@gmail.com>
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * version 2 as published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  22  * 02110-1301 USA
  23  *
  24  */
  25
  26 #include <linux/delay.h>
  27 #include <linux/gpio.h>
  28 #include <linux/platform_device.h>
  29 #include <sound/core.h>
  30 #include <sound/pcm.h>
  31 #include <sound/soc.h>
  32 #include <sound/soc-dapm.h>
  33
  34 #include <asm/mach-types.h>
  35
  36 #include "omap-mcbsp.h"
  37 #include "omap-pcm.h"
  38 #include "../codecs/tlv320aic3x.h"
  39
  40 /*
  41  * REVISIT: TWL4030 GPIO base in RX-51. Now statically defined to 192. This
  42  * gpio is reserved in arch/arm/mach-omap2/board-rx51-peripherals.c
  43  */
  44 #define RX51_SPEAKER_AMP_TWL_GPIO       (192 + 7)
  45
  46 static int rx51_spk_func;
  47 static int rx51_dmic_func;
  48
  49 static void rx51_ext_control(struct snd_soc_codec *codec)
  50 {
  51         if (rx51_spk_func)
  52                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
  53         else
  54                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
  55         if (rx51_dmic_func)
  56                 snd_soc_dapm_enable_pin(codec, "DMic");
  57         else
  58                 snd_soc_dapm_disable_pin(codec, "DMic");
  59
  60         snd_soc_dapm_sync(codec);
  61 }
  62
  63 static int rx51_startup(struct snd_pcm_substream *substream)
  64 {
  65         struct snd_pcm_runtime *runtime = substream->runtime;
  66         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  67         struct snd_soc_codec *codec = rtd->socdev->card->codec;
  68
  69         snd_pcm_hw_constraint_minmax(runtime,
  70                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
  71         rx51_ext_control(codec);
  72
  73         return 0;
  74 }
  75
  76 static int rx51_hw_params(struct snd_pcm_substream *substream,
  77         struct snd_pcm_hw_params *params)
  78 {
  79         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  80         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  81         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  82         int err;
  83
  84         /* Set codec DAI configuration */
  85         err = snd_soc_dai_set_fmt(codec_dai,
  86                                   SND_SOC_DAIFMT_DSP_A |
  87                                   SND_SOC_DAIFMT_IB_NF |
  88                                   SND_SOC_DAIFMT_CBM_CFM);
  89         if (err < 0)
  90                 return err;
  91
  92         /* Set cpu DAI configuration */
  93         err = snd_soc_dai_set_fmt(cpu_dai,
  94                                   SND_SOC_DAIFMT_DSP_A |
  95                                   SND_SOC_DAIFMT_IB_NF |
  96                                   SND_SOC_DAIFMT_CBM_CFM);
  97         if (err < 0)
  98                 return err;
  99
 100         /* Set the codec system clock for DAC and ADC */
 101         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
 102                                       SND_SOC_CLOCK_IN);
 103 }
 104
 105 static struct snd_soc_ops rx51_ops = {
 106         .startup = rx51_startup,
 107         .hw_params = rx51_hw_params,
 108 };
 109
 110 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
 111                         struct snd_ctl_elem_value *ucontrol)
 112 {
 113         ucontrol->value.integer.value[0] = rx51_spk_func;
 114
 115         return 0;
 116 }
 117
 118 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
 119                         struct snd_ctl_elem_value *ucontrol)
 120 {
 121         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 122
 123         if (rx51_spk_func == ucontrol->value.integer.value[0])
 124                 return 0;
 125
 126         rx51_spk_func = ucontrol->value.integer.value[0];
 127         rx51_ext_control(codec);
 128
 129         return 1;
 130 }
 131
 132 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
 133                           struct snd_kcontrol *k, int event)
 134 {
 135         if (SND_SOC_DAPM_EVENT_ON(event))
 136                 gpio_set_value(RX51_SPEAKER_AMP_TWL_GPIO, 1);
 137         else
 138                 gpio_set_value(RX51_SPEAKER_AMP_TWL_GPIO, 0);
 139
 140         return 0;
 141 }
 142
 143 static int rx51_get_input(struct snd_kcontrol *kcontrol,
 144                           struct snd_ctl_elem_value *ucontrol)
 145 {
 146         ucontrol->value.integer.value[0] = rx51_dmic_func;
 147
 148         return 0;
 149 }
 150
 151 static int rx51_set_input(struct snd_kcontrol *kcontrol,
 152                           struct snd_ctl_elem_value *ucontrol)
 153 {
 154         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 155
 156         if (rx51_dmic_func == ucontrol->value.integer.value[0])
 157                 return 0;
 158
 159         rx51_dmic_func = ucontrol->value.integer.value[0];
 160         rx51_ext_control(codec);
 161
 162         return 1;
 163 }
 164
 165 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
 166         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
 167         SND_SOC_DAPM_MIC("DMic", NULL),
 168 };
 169
 170 static const struct snd_soc_dapm_route audio_map[] = {
 171         {"Ext Spk", NULL, "HPLOUT"},
 172         {"Ext Spk", NULL, "HPROUT"},
 173
 174         {"DMic Rate 64", NULL, "Mic Bias 2V"},
 175         {"Mic Bias 2V", NULL, "DMic"},
 176 };
 177
 178 static const char *spk_function[] = {"Off", "On"};
 179 static const char *input_function[] = {"ADC", "Digital Mic"};
 180
 181 static const struct soc_enum rx51_enum[] = {
 182         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 183         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 184 };
 185
 186 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
 187         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
 188                      rx51_get_spk, rx51_set_spk),
 189         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
 190                      rx51_get_input, rx51_set_input),
 191 };
 192
 193 static int rx51_aic34_init(struct snd_soc_codec *codec)
 194 {
 195         int err;
 196
 197         /* Set up NC codec pins */
 198         snd_soc_dapm_nc_pin(codec, "MIC3L");
 199         snd_soc_dapm_nc_pin(codec, "MIC3R");
 200         snd_soc_dapm_nc_pin(codec, "LINE1R");
 201
 202         /* Add RX-51 specific controls */
 203         err = snd_soc_add_controls(codec, aic34_rx51_controls,
 204                                    ARRAY_SIZE(aic34_rx51_controls));
 205         if (err < 0)
 206                 return err;
 207
 208         /* Add RX-51 specific widgets */
 209         snd_soc_dapm_new_controls(codec, aic34_dapm_widgets,
 210                                   ARRAY_SIZE(aic34_dapm_widgets));
 211
 212         /* Set up RX-51 specific audio path audio_map */
 213         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 214
 215         snd_soc_dapm_sync(codec);
 216
 217         return 0;
 218 }
 219
 220 /* Digital audio interface glue - connects codec <--> CPU */
 221 static struct snd_soc_dai_link rx51_dai[] = {
 222         {
 223                 .name = "TLV320AIC34",
 224                 .stream_name = "AIC34",
 225                 .cpu_dai = &omap_mcbsp_dai[0],
 226                 .codec_dai = &aic3x_dai,
 227                 .init = rx51_aic34_init,
 228                 .ops = &rx51_ops,
 229         },
 230 };
 231
 232 /* Audio private data */
 233 static struct aic3x_setup_data rx51_aic34_setup = {
 234         .gpio_func[0] = AIC3X_GPIO1_FUNC_DISABLED,
 235         .gpio_func[1] = AIC3X_GPIO2_FUNC_DIGITAL_MIC_INPUT,
 236 };
 237
 238 /* Audio card */
 239 static struct snd_soc_card rx51_sound_card = {
 240         .name = "RX-51",
 241         .dai_link = rx51_dai,
 242         .num_links = ARRAY_SIZE(rx51_dai),
 243         .platform = &omap_soc_platform,
 244 };
 245
 246 /* Audio subsystem */
 247 static struct snd_soc_device rx51_snd_devdata = {
 248         .card = &rx51_sound_card,
 249         .codec_dev = &soc_codec_dev_aic3x,
 250         .codec_data = &rx51_aic34_setup,
 251 };
 252
 253 static struct platform_device *rx51_snd_device;
 254
 255 static int __init rx51_soc_init(void)
 256 {
 257         int err;
 258
 259         if (!machine_is_nokia_rx51())
 260                 return -ENODEV;
 261
 262         rx51_snd_device = platform_device_alloc("soc-audio", -1);
 263         if (!rx51_snd_device) {
 264                 err = -ENOMEM;
 265                 goto err1;
 266         }
 267
 268         platform_set_drvdata(rx51_snd_device, &rx51_snd_devdata);
 269         rx51_snd_devdata.dev = &rx51_snd_device->dev;
 270         *(unsigned int *)rx51_dai[0].cpu_dai->private_data = 1; /* McBSP2 */
 271
 272         err = platform_device_add(rx51_snd_device);
 273         if (err)
 274                 goto err2;
 275
 276         return 0;
 277 err2:
 278         platform_device_put(rx51_snd_device);
 279 err1:
 280
 281         return err;
 282 }
 283
 284 static void __exit rx51_soc_exit(void)
 285 {
 286         platform_device_unregister(rx51_snd_device);
 287 }
 288
 289 module_init(rx51_soc_init);
 290 module_exit(rx51_soc_exit);
 291
 292 MODULE_AUTHOR("Nokia Corporation");
 293 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
 294 MODULE_LICENSE("GPL");