sound/soc/omap/sdp3430.c

   1 /*
   2  * sdp3430.c  --  SoC audio for TI OMAP3430 SDP
   3  *
   4  * Author: Misael Lopez Cruz <x0052729@ti.com>
   5  *
   6  * Based on:
   7  * Author: Steve Sakoman <steve@sakoman.com>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * version 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  21  * 02110-1301 USA
  22  *
  23  */
  24
  25 #include <linux/clk.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/i2c/twl.h>
  28 #include <sound/core.h>
  29 #include <sound/pcm.h>
  30 #include <sound/soc.h>
  31 #include <sound/jack.h>
  32
  33 #include <asm/mach-types.h>
  34 #include <mach/hardware.h>
  35 #include <mach/gpio.h>
  36 #include <plat/mcbsp.h>
  37
  38 /* Register descriptions for twl4030 codec part */
  39 #include <linux/mfd/twl4030-audio.h>
  40
  41 #include "omap-mcbsp.h"
  42 #include "omap-pcm.h"
  43
  44 /* TWL4030 PMBR1 Register */
  45 #define TWL4030_INTBR_PMBR1             0x0D
  46 /* TWL4030 PMBR1 Register GPIO6 mux bit */
  47 #define TWL4030_GPIO6_PWM0_MUTE(value)  (value << 2)
  48
  49 static struct snd_soc_card snd_soc_sdp3430;
  50
  51 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
  52         struct snd_pcm_hw_params *params)
  53 {
  54         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  55         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  56         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  57         int ret;
  58
  59         /* Set codec DAI configuration */
  60         ret = snd_soc_dai_set_fmt(codec_dai,
  61                                   SND_SOC_DAIFMT_I2S |
  62                                   SND_SOC_DAIFMT_NB_NF |
  63                                   SND_SOC_DAIFMT_CBM_CFM);
  64         if (ret < 0) {
  65                 printk(KERN_ERR "can't set codec DAI configuration\n");
  66                 return ret;
  67         }
  68
  69         /* Set cpu DAI configuration */
  70         ret = snd_soc_dai_set_fmt(cpu_dai,
  71                                   SND_SOC_DAIFMT_I2S |
  72                                   SND_SOC_DAIFMT_NB_NF |
  73                                   SND_SOC_DAIFMT_CBM_CFM);
  74         if (ret < 0) {
  75                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  76                 return ret;
  77         }
  78
  79         /* Set the codec system clock for DAC and ADC */
  80         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  81                                             SND_SOC_CLOCK_IN);
  82         if (ret < 0) {
  83                 printk(KERN_ERR "can't set codec system clock\n");
  84                 return ret;
  85         }
  86
  87         return 0;
  88 }
  89
  90 static struct snd_soc_ops sdp3430_ops = {
  91         .hw_params = sdp3430_hw_params,
  92 };
  93
  94 static int sdp3430_hw_voice_params(struct snd_pcm_substream *substream,
  95         struct snd_pcm_hw_params *params)
  96 {
  97         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  98         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  99         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 100         int ret;
 101
 102         /* Set codec DAI configuration */
 103         ret = snd_soc_dai_set_fmt(codec_dai,
 104                                 SND_SOC_DAIFMT_DSP_A |
 105                                 SND_SOC_DAIFMT_IB_NF |
 106                                 SND_SOC_DAIFMT_CBM_CFM);
 107         if (ret) {
 108                 printk(KERN_ERR "can't set codec DAI configuration\n");
 109                 return ret;
 110         }
 111
 112         /* Set cpu DAI configuration */
 113         ret = snd_soc_dai_set_fmt(cpu_dai,
 114                                 SND_SOC_DAIFMT_DSP_A |
 115                                 SND_SOC_DAIFMT_IB_NF |
 116                                 SND_SOC_DAIFMT_CBM_CFM);
 117         if (ret < 0) {
 118                 printk(KERN_ERR "can't set cpu DAI configuration\n");
 119                 return ret;
 120         }
 121
 122         /* Set the codec system clock for DAC and ADC */
 123         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
 124                                             SND_SOC_CLOCK_IN);
 125         if (ret < 0) {
 126                 printk(KERN_ERR "can't set codec system clock\n");
 127                 return ret;
 128         }
 129
 130         return 0;
 131 }
 132
 133 static struct snd_soc_ops sdp3430_voice_ops = {
 134         .hw_params = sdp3430_hw_voice_params,
 135 };
 136
 137 /* Headset jack */
 138 static struct snd_soc_jack hs_jack;
 139
 140 /* Headset jack detection DAPM pins */
 141 static struct snd_soc_jack_pin hs_jack_pins[] = {
 142         {
 143                 .pin = "Headset Mic",
 144                 .mask = SND_JACK_MICROPHONE,
 145         },
 146         {
 147                 .pin = "Headset Stereophone",
 148                 .mask = SND_JACK_HEADPHONE,
 149         },
 150 };
 151
 152 /* Headset jack detection gpios */
 153 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 154         {
 155                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
 156                 .name = "hsdet-gpio",
 157                 .report = SND_JACK_HEADSET,
 158                 .debounce_time = 200,
 159         },
 160 };
 161
 162 /* SDP3430 machine DAPM */
 163 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
 164         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 165         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 166         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 167         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 168 };
 169
 170 static const struct snd_soc_dapm_route audio_map[] = {
 171         /* External Mics: MAINMIC, SUBMIC with bias*/
 172         {"MAINMIC", NULL, "Mic Bias 1"},
 173         {"SUBMIC", NULL, "Mic Bias 2"},
 174         {"Mic Bias 1", NULL, "Ext Mic"},
 175         {"Mic Bias 2", NULL, "Ext Mic"},
 176
 177         /* External Speakers: HFL, HFR */
 178         {"Ext Spk", NULL, "HFL"},
 179         {"Ext Spk", NULL, "HFR"},
 180
 181         /* Headset Mic: HSMIC with bias */
 182         {"HSMIC", NULL, "Headset Mic Bias"},
 183         {"Headset Mic Bias", NULL, "Headset Mic"},
 184
 185         /* Headset Stereophone (Headphone): HSOL, HSOR */
 186         {"Headset Stereophone", NULL, "HSOL"},
 187         {"Headset Stereophone", NULL, "HSOR"},
 188 };
 189
 190 static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 191 {
 192         struct snd_soc_codec *codec = rtd->codec;
 193         struct snd_soc_dapm_context *dapm = &codec->dapm;
 194         int ret;
 195
 196         /* Add SDP3430 specific widgets */
 197         ret = snd_soc_dapm_new_controls(dapm, sdp3430_twl4030_dapm_widgets,
 198                                 ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
 199         if (ret)
 200                 return ret;
 201
 202         /* Set up SDP3430 specific audio path audio_map */
 203         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 204
 205         /* SDP3430 connected pins */
 206         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 207         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 208         snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 209         snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
 210
 211         /* TWL4030 not connected pins */
 212         snd_soc_dapm_nc_pin(dapm, "AUXL");
 213         snd_soc_dapm_nc_pin(dapm, "AUXR");
 214         snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
 215         snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
 216         snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
 217
 218         snd_soc_dapm_nc_pin(dapm, "OUTL");
 219         snd_soc_dapm_nc_pin(dapm, "OUTR");
 220         snd_soc_dapm_nc_pin(dapm, "EARPIECE");
 221         snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
 222         snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
 223         snd_soc_dapm_nc_pin(dapm, "CARKITL");
 224         snd_soc_dapm_nc_pin(dapm, "CARKITR");
 225
 226         ret = snd_soc_dapm_sync(dapm);
 227         if (ret)
 228                 return ret;
 229
 230         /* Headset jack detection */
 231         ret = snd_soc_jack_new(codec, "Headset Jack",
 232                                 SND_JACK_HEADSET, &hs_jack);
 233         if (ret)
 234                 return ret;
 235
 236         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 237                                 hs_jack_pins);
 238         if (ret)
 239                 return ret;
 240
 241         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 242                                 hs_jack_gpios);
 243
 244         return ret;
 245 }
 246
 247 static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
 248 {
 249         struct snd_soc_codec *codec = rtd->codec;
 250         unsigned short reg;
 251
 252         /* Enable voice interface */
 253         reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
 254         reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 255         codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
 256
 257         return 0;
 258 }
 259
 260
 261 /* Digital audio interface glue - connects codec <--> CPU */
 262 static struct snd_soc_dai_link sdp3430_dai[] = {
 263         {
 264                 .name = "TWL4030 I2S",
 265                 .stream_name = "TWL4030 Audio",
 266                 .cpu_dai_name = "omap-mcbsp-dai.1",
 267                 .codec_dai_name = "twl4030-hifi",
 268                 .platform_name = "omap-pcm-audio",
 269                 .codec_name = "twl4030-codec",
 270                 .init = sdp3430_twl4030_init,
 271                 .ops = &sdp3430_ops,
 272         },
 273         {
 274                 .name = "TWL4030 PCM",
 275                 .stream_name = "TWL4030 Voice",
 276                 .cpu_dai_name = "omap-mcbsp-dai.2",
 277                 .codec_dai_name = "twl4030-voice",
 278                 .platform_name = "omap-pcm-audio",
 279                 .codec_name = "twl4030-codec",
 280                 .init = sdp3430_twl4030_voice_init,
 281                 .ops = &sdp3430_voice_ops,
 282         },
 283 };
 284
 285 /* Audio machine driver */
 286 static struct snd_soc_card snd_soc_sdp3430 = {
 287         .name = "SDP3430",
 288         .dai_link = sdp3430_dai,
 289         .num_links = ARRAY_SIZE(sdp3430_dai),
 290 };
 291
 292 static struct platform_device *sdp3430_snd_device;
 293
 294 static int __init sdp3430_soc_init(void)
 295 {
 296         int ret;
 297         u8 pin_mux;
 298
 299         if (!machine_is_omap_3430sdp())
 300                 return -ENODEV;
 301         printk(KERN_INFO "SDP3430 SoC init\n");
 302
 303         sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
 304         if (!sdp3430_snd_device) {
 305                 printk(KERN_ERR "Platform device allocation failed\n");
 306                 return -ENOMEM;
 307         }
 308
 309         platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
 310
 311         /* Set TWL4030 GPIO6 as EXTMUTE signal */
 312         twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
 313                                                 TWL4030_INTBR_PMBR1);
 314         pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
 315         pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
 316         twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
 317                                                 TWL4030_INTBR_PMBR1);
 318
 319         ret = platform_device_add(sdp3430_snd_device);
 320         if (ret)
 321                 goto err1;
 322
 323         return 0;
 324
 325 err1:
 326         printk(KERN_ERR "Unable to add platform device\n");
 327         platform_device_put(sdp3430_snd_device);
 328
 329         return ret;
 330 }
 331 module_init(sdp3430_soc_init);
 332
 333 static void __exit sdp3430_soc_exit(void)
 334 {
 335         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 336                                 hs_jack_gpios);
 337
 338         platform_device_unregister(sdp3430_snd_device);
 339 }
 340 module_exit(sdp3430_soc_exit);
 341
 342 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 343 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 344 MODULE_LICENSE("GPL");
 345