linux/sound/soc/omap/sdp3430.c
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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 <linux/i2c/twl4030.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 <mach/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
  48static struct snd_soc_card snd_soc_sdp3430;
  49
  50static 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
  89static struct snd_soc_ops sdp3430_ops = {
  90        .hw_params = sdp3430_hw_params,
  91};
  92
  93static 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
 132static struct snd_soc_ops sdp3430_voice_ops = {
 133        .hw_params = sdp3430_hw_voice_params,
 134};
 135
 136/* Headset jack */
 137static struct snd_soc_jack hs_jack;
 138
 139/* Headset jack detection DAPM pins */
 140static 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 */
 152static 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 */
 162static 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
 169static 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
 189static 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
 244static 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 */
 258static 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 */
 278static 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 */
 286static struct twl4030_setup_data twl4030_setup = {
 287        .ramp_delay_value = 3,
 288        .sysclk = 26000,
 289        .hs_extmute = 1,
 290};
 291
 292/* Audio subsystem */
 293static 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
 299static struct platform_device *sdp3430_snd_device;
 300
 301static 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        twl4030_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        twl4030_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
 337err1:
 338        printk(KERN_ERR "Unable to add platform device\n");
 339        platform_device_put(sdp3430_snd_device);
 340
 341        return ret;
 342}
 343module_init(sdp3430_soc_init);
 344
 345static 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}
 352module_exit(sdp3430_soc_exit);
 353
 354MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 355MODULE_DESCRIPTION("ALSA SoC SDP3430");
 356MODULE_LICENSE("GPL");
 357
 358