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   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 <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/soc.h>
  30 #include <sound/soc-dapm.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 <mach/mcbsp.h>
  37
  38 #include "omap-mcbsp.h"
  39 #include "omap-pcm.h"
  40 #include "../codecs/twl4030.h"
  41
  42 static struct snd_soc_card snd_soc_sdp3430;
  43
  44 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
  45         struct snd_pcm_hw_params *params)
  46 {
  47         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  48         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  49         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  50         int ret;
  51
  52         /* Set codec DAI configuration */
  53         ret = snd_soc_dai_set_fmt(codec_dai,
  54                                   SND_SOC_DAIFMT_I2S |
  55                                   SND_SOC_DAIFMT_NB_NF |
  56                                   SND_SOC_DAIFMT_CBM_CFM);
  57         if (ret < 0) {
  58                 printk(KERN_ERR "can't set codec DAI configuration\n");
  59                 return ret;
  60         }
  61
  62         /* Set cpu DAI configuration */
  63         ret = snd_soc_dai_set_fmt(cpu_dai,
  64                                   SND_SOC_DAIFMT_I2S |
  65                                   SND_SOC_DAIFMT_NB_NF |
  66                                   SND_SOC_DAIFMT_CBM_CFM);
  67         if (ret < 0) {
  68                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  69                 return ret;
  70         }
  71
  72         /* Set the codec system clock for DAC and ADC */
  73         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  74                                             SND_SOC_CLOCK_IN);
  75         if (ret < 0) {
  76                 printk(KERN_ERR "can't set codec system clock\n");
  77                 return ret;
  78         }
  79
  80         return 0;
  81 }
  82
  83 static struct snd_soc_ops sdp3430_ops = {
  84         .hw_params = sdp3430_hw_params,
  85 };
  86
  87 static int sdp3430_hw_voice_params(struct snd_pcm_substream *substream,
  88         struct snd_pcm_hw_params *params)
  89 {
  90         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  91         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  92         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  93         int ret;
  94
  95         /* Set codec DAI configuration */
  96         ret = snd_soc_dai_set_fmt(codec_dai,
  97                                 SND_SOC_DAIFMT_DSP_A |
  98                                 SND_SOC_DAIFMT_IB_NF |
  99                                 SND_SOC_DAIFMT_CBS_CFM);
 100         if (ret) {
 101                 printk(KERN_ERR "can't set codec DAI configuration\n");
 102                 return ret;
 103         }
 104
 105         /* Set cpu DAI configuration */
 106         ret = snd_soc_dai_set_fmt(cpu_dai,
 107                                 SND_SOC_DAIFMT_DSP_A |
 108                                 SND_SOC_DAIFMT_IB_NF |
 109                                 SND_SOC_DAIFMT_CBM_CFM);
 110         if (ret < 0) {
 111                 printk(KERN_ERR "can't set cpu DAI configuration\n");
 112                 return ret;
 113         }
 114
 115         /* Set the codec system clock for DAC and ADC */
 116         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
 117                                             SND_SOC_CLOCK_IN);
 118         if (ret < 0) {
 119                 printk(KERN_ERR "can't set codec system clock\n");
 120                 return ret;
 121         }
 122
 123         return 0;
 124 }
 125
 126 static struct snd_soc_ops sdp3430_voice_ops = {
 127         .hw_params = sdp3430_hw_voice_params,
 128 };
 129
 130 /* Headset jack */
 131 static struct snd_soc_jack hs_jack;
 132
 133 /* Headset jack detection DAPM pins */
 134 static struct snd_soc_jack_pin hs_jack_pins[] = {
 135         {
 136                 .pin = "Headset Mic",
 137                 .mask = SND_JACK_MICROPHONE,
 138         },
 139         {
 140                 .pin = "Headset Stereophone",
 141                 .mask = SND_JACK_HEADPHONE,
 142         },
 143 };
 144
 145 /* Headset jack detection gpios */
 146 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 147         {
 148                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
 149                 .name = "hsdet-gpio",
 150                 .report = SND_JACK_HEADSET,
 151                 .debounce_time = 200,
 152         },
 153 };
 154
 155 /* SDP3430 machine DAPM */
 156 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
 157         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 158         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 159         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 160         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 161 };
 162
 163 static const struct snd_soc_dapm_route audio_map[] = {
 164         /* External Mics: MAINMIC, SUBMIC with bias*/
 165         {"MAINMIC", NULL, "Mic Bias 1"},
 166         {"SUBMIC", NULL, "Mic Bias 2"},
 167         {"Mic Bias 1", NULL, "Ext Mic"},
 168         {"Mic Bias 2", NULL, "Ext Mic"},
 169
 170         /* External Speakers: HFL, HFR */
 171         {"Ext Spk", NULL, "HFL"},
 172         {"Ext Spk", NULL, "HFR"},
 173
 174         /* Headset Mic: HSMIC with bias */
 175         {"HSMIC", NULL, "Headset Mic Bias"},
 176         {"Headset Mic Bias", NULL, "Headset Mic"},
 177
 178         /* Headset Stereophone (Headphone): HSOL, HSOR */
 179         {"Headset Stereophone", NULL, "HSOL"},
 180         {"Headset Stereophone", NULL, "HSOR"},
 181 };
 182
 183 static int sdp3430_twl4030_init(struct snd_soc_codec *codec)
 184 {
 185         int ret;
 186
 187         /* Add SDP3430 specific widgets */
 188         ret = snd_soc_dapm_new_controls(codec, sdp3430_twl4030_dapm_widgets,
 189                                 ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
 190         if (ret)
 191                 return ret;
 192
 193         /* Set up SDP3430 specific audio path audio_map */
 194         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 195
 196         /* SDP3430 connected pins */
 197         snd_soc_dapm_enable_pin(codec, "Ext Mic");
 198         snd_soc_dapm_enable_pin(codec, "Ext Spk");
 199         snd_soc_dapm_disable_pin(codec, "Headset Mic");
 200         snd_soc_dapm_disable_pin(codec, "Headset Stereophone");
 201
 202         /* TWL4030 not connected pins */
 203         snd_soc_dapm_nc_pin(codec, "AUXL");
 204         snd_soc_dapm_nc_pin(codec, "AUXR");
 205         snd_soc_dapm_nc_pin(codec, "CARKITMIC");
 206         snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
 207         snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
 208
 209         snd_soc_dapm_nc_pin(codec, "OUTL");
 210         snd_soc_dapm_nc_pin(codec, "OUTR");
 211         snd_soc_dapm_nc_pin(codec, "EARPIECE");
 212         snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
 213         snd_soc_dapm_nc_pin(codec, "PREDRIVER");
 214         snd_soc_dapm_nc_pin(codec, "CARKITL");
 215         snd_soc_dapm_nc_pin(codec, "CARKITR");
 216
 217         ret = snd_soc_dapm_sync(codec);
 218         if (ret)
 219                 return ret;
 220
 221         /* Headset jack detection */
 222         ret = snd_soc_jack_new(&snd_soc_sdp3430, "Headset Jack",
 223                                 SND_JACK_HEADSET, &hs_jack);
 224         if (ret)
 225                 return ret;
 226
 227         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 228                                 hs_jack_pins);
 229         if (ret)
 230                 return ret;
 231
 232         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 233                                 hs_jack_gpios);
 234
 235         return ret;
 236 }
 237
 238 static int sdp3430_twl4030_voice_init(struct snd_soc_codec *codec)
 239 {
 240         unsigned short reg;
 241
 242         /* Enable voice interface */
 243         reg = codec->read(codec, TWL4030_REG_VOICE_IF);
 244         reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 245         codec->write(codec, TWL4030_REG_VOICE_IF, reg);
 246
 247         return 0;
 248 }
 249
 250
 251 /* Digital audio interface glue - connects codec <--> CPU */
 252 static struct snd_soc_dai_link sdp3430_dai[] = {
 253         {
 254                 .name = "TWL4030 I2S",
 255                 .stream_name = "TWL4030 Audio",
 256                 .cpu_dai = &omap_mcbsp_dai[0],
 257                 .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
 258                 .init = sdp3430_twl4030_init,
 259                 .ops = &sdp3430_ops,
 260         },
 261         {
 262                 .name = "TWL4030 PCM",
 263                 .stream_name = "TWL4030 Voice",
 264                 .cpu_dai = &omap_mcbsp_dai[1],
 265                 .codec_dai = &twl4030_dai[TWL4030_DAI_VOICE],
 266                 .init = sdp3430_twl4030_voice_init,
 267                 .ops = &sdp3430_voice_ops,
 268         },
 269 };
 270
 271 /* Audio machine driver */
 272 static struct snd_soc_card snd_soc_sdp3430 = {
 273         .name = "SDP3430",
 274         .platform = &omap_soc_platform,
 275         .dai_link = sdp3430_dai,
 276         .num_links = ARRAY_SIZE(sdp3430_dai),
 277 };
 278
 279 /* twl4030 setup */
 280 static struct twl4030_setup_data twl4030_setup = {
 281         .ramp_delay_value = 3,
 282         .sysclk = 26000,
 283 };
 284
 285 /* Audio subsystem */
 286 static struct snd_soc_device sdp3430_snd_devdata = {
 287         .card = &snd_soc_sdp3430,
 288         .codec_dev = &soc_codec_dev_twl4030,
 289         .codec_data = &twl4030_setup,
 290 };
 291
 292 static struct platform_device *sdp3430_snd_device;
 293
 294 static int __init sdp3430_soc_init(void)
 295 {
 296         int ret;
 297
 298         if (!machine_is_omap_3430sdp()) {
 299                 pr_debug("Not SDP3430!\n");
 300                 return -ENODEV;
 301         }
 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, &sdp3430_snd_devdata);
 311         sdp3430_snd_devdata.dev = &sdp3430_snd_device->dev;
 312         *(unsigned int *)sdp3430_dai[0].cpu_dai->private_data = 1; /* McBSP2 */
 313         *(unsigned int *)sdp3430_dai[1].cpu_dai->private_data = 2; /* McBSP3 */
 314
 315         ret = platform_device_add(sdp3430_snd_device);
 316         if (ret)
 317                 goto err1;
 318
 319         return 0;
 320
 321 err1:
 322         printk(KERN_ERR "Unable to add platform device\n");
 323         platform_device_put(sdp3430_snd_device);
 324
 325         return ret;
 326 }
 327 module_init(sdp3430_soc_init);
 328
 329 static void __exit sdp3430_soc_exit(void)
 330 {
 331         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 332                                 hs_jack_gpios);
 333
 334         platform_device_unregister(sdp3430_snd_device);
 335 }
 336 module_exit(sdp3430_soc_exit);
 337
 338 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 339 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 340 MODULE_LICENSE("GPL");
 341