release/src-rt-6.x.4708/linux/linux-2.6.36/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 #include "omap-mcbsp.h"
  40 #include "omap-pcm.h"
  41 #include "../codecs/twl4030.h"
  42
  43 /* TWL4030 PMBR1 Register */
  44 #define TWL4030_INTBR_PMBR1             0x0D
  45 /* TWL4030 PMBR1 Register GPIO6 mux bit */
  46 #define TWL4030_GPIO6_PWM0_MUTE(value)  (value << 2)
  47
  48 static struct snd_soc_card snd_soc_sdp3430;
  49
  50 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
  51         struct snd_pcm_hw_params *params)
  52 {
  53         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  54         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  55         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  56         int ret;
  57
  58         /* Set codec DAI configuration */
  59         ret = snd_soc_dai_set_fmt(codec_dai,
  60                                   SND_SOC_DAIFMT_I2S |
  61                                   SND_SOC_DAIFMT_NB_NF |
  62                                   SND_SOC_DAIFMT_CBM_CFM);
  63         if (ret < 0) {
  64                 printk(KERN_ERR "can't set codec DAI configuration\n");
  65                 return ret;
  66         }
  67
  68         /* Set cpu DAI configuration */
  69         ret = snd_soc_dai_set_fmt(cpu_dai,
  70                                   SND_SOC_DAIFMT_I2S |
  71                                   SND_SOC_DAIFMT_NB_NF |
  72                                   SND_SOC_DAIFMT_CBM_CFM);
  73         if (ret < 0) {
  74                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  75                 return ret;
  76         }
  77
  78         /* Set the codec system clock for DAC and ADC */
  79         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  80                                             SND_SOC_CLOCK_IN);
  81         if (ret < 0) {
  82                 printk(KERN_ERR "can't set codec system clock\n");
  83                 return ret;
  84         }
  85
  86         return 0;
  87 }
  88
  89 static struct snd_soc_ops sdp3430_ops = {
  90         .hw_params = sdp3430_hw_params,
  91 };
  92
  93 static int sdp3430_hw_voice_params(struct snd_pcm_substream *substream,
  94         struct snd_pcm_hw_params *params)
  95 {
  96         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  97         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  98         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  99         int ret;
 100
 101         /* Set codec DAI configuration */
 102         ret = snd_soc_dai_set_fmt(codec_dai,
 103                                 SND_SOC_DAIFMT_DSP_A |
 104                                 SND_SOC_DAIFMT_IB_NF |
 105                                 SND_SOC_DAIFMT_CBM_CFM);
 106         if (ret) {
 107                 printk(KERN_ERR "can't set codec DAI configuration\n");
 108                 return ret;
 109         }
 110
 111         /* Set cpu DAI configuration */
 112         ret = snd_soc_dai_set_fmt(cpu_dai,
 113                                 SND_SOC_DAIFMT_DSP_A |
 114                                 SND_SOC_DAIFMT_IB_NF |
 115                                 SND_SOC_DAIFMT_CBM_CFM);
 116         if (ret < 0) {
 117                 printk(KERN_ERR "can't set cpu DAI configuration\n");
 118                 return ret;
 119         }
 120
 121         /* Set the codec system clock for DAC and ADC */
 122         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
 123                                             SND_SOC_CLOCK_IN);
 124         if (ret < 0) {
 125                 printk(KERN_ERR "can't set codec system clock\n");
 126                 return ret;
 127         }
 128
 129         return 0;
 130 }
 131
 132 static struct snd_soc_ops sdp3430_voice_ops = {
 133         .hw_params = sdp3430_hw_voice_params,
 134 };
 135
 136 /* Headset jack */
 137 static struct snd_soc_jack hs_jack;
 138
 139 /* Headset jack detection DAPM pins */
 140 static struct snd_soc_jack_pin hs_jack_pins[] = {
 141         {
 142                 .pin = "Headset Mic",
 143                 .mask = SND_JACK_MICROPHONE,
 144         },
 145         {
 146                 .pin = "Headset Stereophone",
 147                 .mask = SND_JACK_HEADPHONE,
 148         },
 149 };
 150
 151 /* Headset jack detection gpios */
 152 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 153         {
 154                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
 155                 .name = "hsdet-gpio",
 156                 .report = SND_JACK_HEADSET,
 157                 .debounce_time = 200,
 158         },
 159 };
 160
 161 /* SDP3430 machine DAPM */
 162 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
 163         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 164         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 165         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 166         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 167 };
 168
 169 static const struct snd_soc_dapm_route audio_map[] = {
 170         /* External Mics: MAINMIC, SUBMIC with bias*/
 171         {"MAINMIC", NULL, "Mic Bias 1"},
 172         {"SUBMIC", NULL, "Mic Bias 2"},
 173         {"Mic Bias 1", NULL, "Ext Mic"},
 174         {"Mic Bias 2", NULL, "Ext Mic"},
 175
 176         /* External Speakers: HFL, HFR */
 177         {"Ext Spk", NULL, "HFL"},
 178         {"Ext Spk", NULL, "HFR"},
 179
 180         /* Headset Mic: HSMIC with bias */
 181         {"HSMIC", NULL, "Headset Mic Bias"},
 182         {"Headset Mic Bias", NULL, "Headset Mic"},
 183
 184         /* Headset Stereophone (Headphone): HSOL, HSOR */
 185         {"Headset Stereophone", NULL, "HSOL"},
 186         {"Headset Stereophone", NULL, "HSOR"},
 187 };
 188
 189 static int sdp3430_twl4030_init(struct snd_soc_codec *codec)
 190 {
 191         int ret;
 192
 193         /* Add SDP3430 specific widgets */
 194         ret = snd_soc_dapm_new_controls(codec, sdp3430_twl4030_dapm_widgets,
 195                                 ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
 196         if (ret)
 197                 return ret;
 198
 199         /* Set up SDP3430 specific audio path audio_map */
 200         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 201
 202         /* SDP3430 connected pins */
 203         snd_soc_dapm_enable_pin(codec, "Ext Mic");
 204         snd_soc_dapm_enable_pin(codec, "Ext Spk");
 205         snd_soc_dapm_disable_pin(codec, "Headset Mic");
 206         snd_soc_dapm_disable_pin(codec, "Headset Stereophone");
 207
 208         /* TWL4030 not connected pins */
 209         snd_soc_dapm_nc_pin(codec, "AUXL");
 210         snd_soc_dapm_nc_pin(codec, "AUXR");
 211         snd_soc_dapm_nc_pin(codec, "CARKITMIC");
 212         snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
 213         snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
 214
 215         snd_soc_dapm_nc_pin(codec, "OUTL");
 216         snd_soc_dapm_nc_pin(codec, "OUTR");
 217         snd_soc_dapm_nc_pin(codec, "EARPIECE");
 218         snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
 219         snd_soc_dapm_nc_pin(codec, "PREDRIVER");
 220         snd_soc_dapm_nc_pin(codec, "CARKITL");
 221         snd_soc_dapm_nc_pin(codec, "CARKITR");
 222
 223         ret = snd_soc_dapm_sync(codec);
 224         if (ret)
 225                 return ret;
 226
 227         /* Headset jack detection */
 228         ret = snd_soc_jack_new(&snd_soc_sdp3430, "Headset Jack",
 229                                 SND_JACK_HEADSET, &hs_jack);
 230         if (ret)
 231                 return ret;
 232
 233         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 234                                 hs_jack_pins);
 235         if (ret)
 236                 return ret;
 237
 238         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 239                                 hs_jack_gpios);
 240
 241         return ret;
 242 }
 243
 244 static int sdp3430_twl4030_voice_init(struct snd_soc_codec *codec)
 245 {
 246         unsigned short reg;
 247
 248         /* Enable voice interface */
 249         reg = codec->read(codec, TWL4030_REG_VOICE_IF);
 250         reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 251         codec->write(codec, TWL4030_REG_VOICE_IF, reg);
 252
 253         return 0;
 254 }
 255
 256
 257 /* Digital audio interface glue - connects codec <--> CPU */
 258 static struct snd_soc_dai_link sdp3430_dai[] = {
 259         {
 260                 .name = "TWL4030 I2S",
 261                 .stream_name = "TWL4030 Audio",
 262                 .cpu_dai = &omap_mcbsp_dai[0],
 263                 .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
 264                 .init = sdp3430_twl4030_init,
 265                 .ops = &sdp3430_ops,
 266         },
 267         {
 268                 .name = "TWL4030 PCM",
 269                 .stream_name = "TWL4030 Voice",
 270                 .cpu_dai = &omap_mcbsp_dai[1],
 271                 .codec_dai = &twl4030_dai[TWL4030_DAI_VOICE],
 272                 .init = sdp3430_twl4030_voice_init,
 273                 .ops = &sdp3430_voice_ops,
 274         },
 275 };
 276
 277 /* Audio machine driver */
 278 static struct snd_soc_card snd_soc_sdp3430 = {
 279         .name = "SDP3430",
 280         .platform = &omap_soc_platform,
 281         .dai_link = sdp3430_dai,
 282         .num_links = ARRAY_SIZE(sdp3430_dai),
 283 };
 284
 285 /* twl4030 setup */
 286 static struct twl4030_setup_data twl4030_setup = {
 287         .ramp_delay_value = 3,
 288         .sysclk = 26000,
 289         .hs_extmute = 1,
 290 };
 291
 292 /* Audio subsystem */
 293 static struct snd_soc_device sdp3430_snd_devdata = {
 294         .card = &snd_soc_sdp3430,
 295         .codec_dev = &soc_codec_dev_twl4030,
 296         .codec_data = &twl4030_setup,
 297 };
 298
 299 static struct platform_device *sdp3430_snd_device;
 300
 301 static int __init sdp3430_soc_init(void)
 302 {
 303         int ret;
 304         u8 pin_mux;
 305
 306         if (!machine_is_omap_3430sdp()) {
 307                 pr_debug("Not SDP3430!\n");
 308                 return -ENODEV;
 309         }
 310         printk(KERN_INFO "SDP3430 SoC init\n");
 311
 312         sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
 313         if (!sdp3430_snd_device) {
 314                 printk(KERN_ERR "Platform device allocation failed\n");
 315                 return -ENOMEM;
 316         }
 317
 318         platform_set_drvdata(sdp3430_snd_device, &sdp3430_snd_devdata);
 319         sdp3430_snd_devdata.dev = &sdp3430_snd_device->dev;
 320         *(unsigned int *)sdp3430_dai[0].cpu_dai->private_data = 1; /* McBSP2 */
 321         *(unsigned int *)sdp3430_dai[1].cpu_dai->private_data = 2; /* McBSP3 */
 322
 323         /* Set TWL4030 GPIO6 as EXTMUTE signal */
 324         twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
 325                                                 TWL4030_INTBR_PMBR1);
 326         pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
 327         pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
 328         twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
 329                                                 TWL4030_INTBR_PMBR1);
 330
 331         ret = platform_device_add(sdp3430_snd_device);
 332         if (ret)
 333                 goto err1;
 334
 335         return 0;
 336
 337 err1:
 338         printk(KERN_ERR "Unable to add platform device\n");
 339         platform_device_put(sdp3430_snd_device);
 340
 341         return ret;
 342 }
 343 module_init(sdp3430_soc_init);
 344
 345 static void __exit sdp3430_soc_exit(void)
 346 {
 347         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 348                                 hs_jack_gpios);
 349
 350         platform_device_unregister(sdp3430_snd_device);
 351 }
 352 module_exit(sdp3430_soc_exit);
 353
 354 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 355 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 356 MODULE_LICENSE("GPL");