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/soc-dapm.h>
  32 #include <sound/jack.h>
  33
  34 #include <asm/mach-types.h>
  35 #include <mach/hardware.h>
  36 #include <mach/gpio.h>
  37 #include <plat/mcbsp.h>
  38
  39 /* Register descriptions for twl4030 codec part */
  40 #include <linux/mfd/twl4030-codec.h>
  41
  42 #include "omap-mcbsp.h"
  43 #include "omap-pcm.h"
  44
  45 /* TWL4030 PMBR1 Register */
  46 #define TWL4030_INTBR_PMBR1             0x0D
  47 /* TWL4030 PMBR1 Register GPIO6 mux bit */
  48 #define TWL4030_GPIO6_PWM0_MUTE(value)  (value << 2)
  49
  50 static struct snd_soc_card snd_soc_sdp3430;
  51
  52 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
  53         struct snd_pcm_hw_params *params)
  54 {
  55         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  56         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  57         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  58         int ret;
  59
  60         /* Set codec DAI configuration */
  61         ret = snd_soc_dai_set_fmt(codec_dai,
  62                                   SND_SOC_DAIFMT_I2S |
  63                                   SND_SOC_DAIFMT_NB_NF |
  64                                   SND_SOC_DAIFMT_CBM_CFM);
  65         if (ret < 0) {
  66                 printk(KERN_ERR "can't set codec DAI configuration\n");
  67                 return ret;
  68         }
  69
  70         /* Set cpu DAI configuration */
  71         ret = snd_soc_dai_set_fmt(cpu_dai,
  72                                   SND_SOC_DAIFMT_I2S |
  73                                   SND_SOC_DAIFMT_NB_NF |
  74                                   SND_SOC_DAIFMT_CBM_CFM);
  75         if (ret < 0) {
  76                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  77                 return ret;
  78         }
  79
  80         /* Set the codec system clock for DAC and ADC */
  81         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  82                                             SND_SOC_CLOCK_IN);
  83         if (ret < 0) {
  84                 printk(KERN_ERR "can't set codec system clock\n");
  85                 return ret;
  86         }
  87
  88         return 0;
  89 }
  90
  91 static struct snd_soc_ops sdp3430_ops = {
  92         .hw_params = sdp3430_hw_params,
  93 };
  94
  95 static int sdp3430_hw_voice_params(struct snd_pcm_substream *substream,
  96         struct snd_pcm_hw_params *params)
  97 {
  98         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  99         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 100         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 101         int ret;
 102
 103         /* Set codec DAI configuration */
 104         ret = snd_soc_dai_set_fmt(codec_dai,
 105                                 SND_SOC_DAIFMT_DSP_A |
 106                                 SND_SOC_DAIFMT_IB_NF |
 107                                 SND_SOC_DAIFMT_CBM_CFM);
 108         if (ret) {
 109                 printk(KERN_ERR "can't set codec DAI configuration\n");
 110                 return ret;
 111         }
 112
 113         /* Set cpu DAI configuration */
 114         ret = snd_soc_dai_set_fmt(cpu_dai,
 115                                 SND_SOC_DAIFMT_DSP_A |
 116                                 SND_SOC_DAIFMT_IB_NF |
 117                                 SND_SOC_DAIFMT_CBM_CFM);
 118         if (ret < 0) {
 119                 printk(KERN_ERR "can't set cpu DAI configuration\n");
 120                 return ret;
 121         }
 122
 123         /* Set the codec system clock for DAC and ADC */
 124         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
 125                                             SND_SOC_CLOCK_IN);
 126         if (ret < 0) {
 127                 printk(KERN_ERR "can't set codec system clock\n");
 128                 return ret;
 129         }
 130
 131         return 0;
 132 }
 133
 134 static struct snd_soc_ops sdp3430_voice_ops = {
 135         .hw_params = sdp3430_hw_voice_params,
 136 };
 137
 138 /* Headset jack */
 139 static struct snd_soc_jack hs_jack;
 140
 141 /* Headset jack detection DAPM pins */
 142 static struct snd_soc_jack_pin hs_jack_pins[] = {
 143         {
 144                 .pin = "Headset Mic",
 145                 .mask = SND_JACK_MICROPHONE,
 146         },
 147         {
 148                 .pin = "Headset Stereophone",
 149                 .mask = SND_JACK_HEADPHONE,
 150         },
 151 };
 152
 153 /* Headset jack detection gpios */
 154 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 155         {
 156                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
 157                 .name = "hsdet-gpio",
 158                 .report = SND_JACK_HEADSET,
 159                 .debounce_time = 200,
 160         },
 161 };
 162
 163 /* SDP3430 machine DAPM */
 164 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
 165         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 166         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 167         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 168         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 169 };
 170
 171 static const struct snd_soc_dapm_route audio_map[] = {
 172         /* External Mics: MAINMIC, SUBMIC with bias*/
 173         {"MAINMIC", NULL, "Mic Bias 1"},
 174         {"SUBMIC", NULL, "Mic Bias 2"},
 175         {"Mic Bias 1", NULL, "Ext Mic"},
 176         {"Mic Bias 2", NULL, "Ext Mic"},
 177
 178         /* External Speakers: HFL, HFR */
 179         {"Ext Spk", NULL, "HFL"},
 180         {"Ext Spk", NULL, "HFR"},
 181
 182         /* Headset Mic: HSMIC with bias */
 183         {"HSMIC", NULL, "Headset Mic Bias"},
 184         {"Headset Mic Bias", NULL, "Headset Mic"},
 185
 186         /* Headset Stereophone (Headphone): HSOL, HSOR */
 187         {"Headset Stereophone", NULL, "HSOL"},
 188         {"Headset Stereophone", NULL, "HSOR"},
 189 };
 190
 191 static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 192 {
 193         struct snd_soc_codec *codec = rtd->codec;
 194         struct snd_soc_dapm_context *dapm = &codec->dapm;
 195         int ret;
 196
 197         /* Add SDP3430 specific widgets */
 198         ret = snd_soc_dapm_new_controls(dapm, sdp3430_twl4030_dapm_widgets,
 199                                 ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
 200         if (ret)
 201                 return ret;
 202
 203         /* Set up SDP3430 specific audio path audio_map */
 204         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 205
 206         /* SDP3430 connected pins */
 207         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 208         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 209         snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 210         snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
 211
 212         /* TWL4030 not connected pins */
 213         snd_soc_dapm_nc_pin(dapm, "AUXL");
 214         snd_soc_dapm_nc_pin(dapm, "AUXR");
 215         snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
 216         snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
 217         snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
 218
 219         snd_soc_dapm_nc_pin(dapm, "OUTL");
 220         snd_soc_dapm_nc_pin(dapm, "OUTR");
 221         snd_soc_dapm_nc_pin(dapm, "EARPIECE");
 222         snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
 223         snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
 224         snd_soc_dapm_nc_pin(dapm, "CARKITL");
 225         snd_soc_dapm_nc_pin(dapm, "CARKITR");
 226
 227         ret = snd_soc_dapm_sync(dapm);
 228         if (ret)
 229                 return ret;
 230
 231         /* Headset jack detection */
 232         ret = snd_soc_jack_new(codec, "Headset Jack",
 233                                 SND_JACK_HEADSET, &hs_jack);
 234         if (ret)
 235                 return ret;
 236
 237         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 238                                 hs_jack_pins);
 239         if (ret)
 240                 return ret;
 241
 242         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 243                                 hs_jack_gpios);
 244
 245         return ret;
 246 }
 247
 248 static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
 249 {
 250         struct snd_soc_codec *codec = rtd->codec;
 251         unsigned short reg;
 252
 253         /* Enable voice interface */
 254         reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
 255         reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 256         codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
 257
 258         return 0;
 259 }
 260
 261
 262 /* Digital audio interface glue - connects codec <--> CPU */
 263 static struct snd_soc_dai_link sdp3430_dai[] = {
 264         {
 265                 .name = "TWL4030 I2S",
 266                 .stream_name = "TWL4030 Audio",
 267                 .cpu_dai_name = "omap-mcbsp-dai.1",
 268                 .codec_dai_name = "twl4030-hifi",
 269                 .platform_name = "omap-pcm-audio",
 270                 .codec_name = "twl4030-codec",
 271                 .init = sdp3430_twl4030_init,
 272                 .ops = &sdp3430_ops,
 273         },
 274         {
 275                 .name = "TWL4030 PCM",
 276                 .stream_name = "TWL4030 Voice",
 277                 .cpu_dai_name = "omap-mcbsp-dai.2",
 278                 .codec_dai_name = "twl4030-voice",
 279                 .platform_name = "omap-pcm-audio",
 280                 .codec_name = "twl4030-codec",
 281                 .init = sdp3430_twl4030_voice_init,
 282                 .ops = &sdp3430_voice_ops,
 283         },
 284 };
 285
 286 /* Audio machine driver */
 287 static struct snd_soc_card snd_soc_sdp3430 = {
 288         .name = "SDP3430",
 289         .dai_link = sdp3430_dai,
 290         .num_links = ARRAY_SIZE(sdp3430_dai),
 291 };
 292
 293 static struct platform_device *sdp3430_snd_device;
 294
 295 static int __init sdp3430_soc_init(void)
 296 {
 297         int ret;
 298         u8 pin_mux;
 299
 300         if (!machine_is_omap_3430sdp())
 301                 return -ENODEV;
 302         printk(KERN_INFO "SDP3430 SoC init\n");
 303
 304         sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
 305         if (!sdp3430_snd_device) {
 306                 printk(KERN_ERR "Platform device allocation failed\n");
 307                 return -ENOMEM;
 308         }
 309
 310         platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
 311
 312         /* Set TWL4030 GPIO6 as EXTMUTE signal */
 313         twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
 314                                                 TWL4030_INTBR_PMBR1);
 315         pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
 316         pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
 317         twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
 318                                                 TWL4030_INTBR_PMBR1);
 319
 320         ret = platform_device_add(sdp3430_snd_device);
 321         if (ret)
 322                 goto err1;
 323
 324         return 0;
 325
 326 err1:
 327         printk(KERN_ERR "Unable to add platform device\n");
 328         platform_device_put(sdp3430_snd_device);
 329
 330         return ret;
 331 }
 332 module_init(sdp3430_soc_init);
 333
 334 static void __exit sdp3430_soc_exit(void)
 335 {
 336         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 337                                 hs_jack_gpios);
 338
 339         platform_device_unregister(sdp3430_snd_device);
 340 }
 341 module_exit(sdp3430_soc_exit);
 342
 343 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 344 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 345 MODULE_LICENSE("GPL");
 346