LXR linux/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#include <linux/module.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
  50static struct snd_soc_card snd_soc_sdp3430;
  51
  52static 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        int ret;
  58
  59        /* Set the codec system clock for DAC and ADC */
  60        ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  61                                            SND_SOC_CLOCK_IN);
  62        if (ret < 0) {
  63                printk(KERN_ERR "can't set codec system clock\n");
  64                return ret;
  65        }
  66
  67        return 0;
  68}
  69
  70static struct snd_soc_ops sdp3430_ops = {
  71        .hw_params = sdp3430_hw_params,
  72};
  73
  74/* Headset jack */
  75static struct snd_soc_jack hs_jack;
  76
  77/* Headset jack detection DAPM pins */
  78static struct snd_soc_jack_pin hs_jack_pins[] = {
  79        {
  80                .pin = "Headset Mic",
  81                .mask = SND_JACK_MICROPHONE,
  82        },
  83        {
  84                .pin = "Headset Stereophone",
  85                .mask = SND_JACK_HEADPHONE,
  86        },
  87};
  88
  89/* Headset jack detection gpios */
  90static struct snd_soc_jack_gpio hs_jack_gpios[] = {
  91        {
  92                .gpio = (OMAP_MAX_GPIO_LINES + 2),
  93                .name = "hsdet-gpio",
  94                .report = SND_JACK_HEADSET,
  95                .debounce_time = 200,
  96        },
  97};
  98
  99/* SDP3430 machine DAPM */
 100static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
 101        SND_SOC_DAPM_MIC("Ext Mic", NULL),
 102        SND_SOC_DAPM_SPK("Ext Spk", NULL),
 103        SND_SOC_DAPM_MIC("Headset Mic", NULL),
 104        SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 105};
 106
 107static const struct snd_soc_dapm_route audio_map[] = {
 108        /* External Mics: MAINMIC, SUBMIC with bias*/
 109        {"MAINMIC", NULL, "Mic Bias 1"},
 110        {"SUBMIC", NULL, "Mic Bias 2"},
 111        {"Mic Bias 1", NULL, "Ext Mic"},
 112        {"Mic Bias 2", NULL, "Ext Mic"},
 113
 114        /* External Speakers: HFL, HFR */
 115        {"Ext Spk", NULL, "HFL"},
 116        {"Ext Spk", NULL, "HFR"},
 117
 118        /* Headset Mic: HSMIC with bias */
 119        {"HSMIC", NULL, "Headset Mic Bias"},
 120        {"Headset Mic Bias", NULL, "Headset Mic"},
 121
 122        /* Headset Stereophone (Headphone): HSOL, HSOR */
 123        {"Headset Stereophone", NULL, "HSOL"},
 124        {"Headset Stereophone", NULL, "HSOR"},
 125};
 126
 127static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 128{
 129        struct snd_soc_codec *codec = rtd->codec;
 130        struct snd_soc_dapm_context *dapm = &codec->dapm;
 131        int ret;
 132
 133        /* SDP3430 connected pins */
 134        snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 135        snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 136        snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 137        snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
 138
 139        /* TWL4030 not connected pins */
 140        snd_soc_dapm_nc_pin(dapm, "AUXL");
 141        snd_soc_dapm_nc_pin(dapm, "AUXR");
 142        snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
 143        snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
 144        snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
 145
 146        snd_soc_dapm_nc_pin(dapm, "OUTL");
 147        snd_soc_dapm_nc_pin(dapm, "OUTR");
 148        snd_soc_dapm_nc_pin(dapm, "EARPIECE");
 149        snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
 150        snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
 151        snd_soc_dapm_nc_pin(dapm, "CARKITL");
 152        snd_soc_dapm_nc_pin(dapm, "CARKITR");
 153
 154        /* Headset jack detection */
 155        ret = snd_soc_jack_new(codec, "Headset Jack",
 156                                SND_JACK_HEADSET, &hs_jack);
 157        if (ret)
 158                return ret;
 159
 160        ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 161                                hs_jack_pins);
 162        if (ret)
 163                return ret;
 164
 165        ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 166                                hs_jack_gpios);
 167
 168        return ret;
 169}
 170
 171static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
 172{
 173        struct snd_soc_codec *codec = rtd->codec;
 174        unsigned short reg;
 175
 176        /* Enable voice interface */
 177        reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
 178        reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 179        codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
 180
 181        return 0;
 182}
 183
 184
 185/* Digital audio interface glue - connects codec <--> CPU */
 186static struct snd_soc_dai_link sdp3430_dai[] = {
 187        {
 188                .name = "TWL4030 I2S",
 189                .stream_name = "TWL4030 Audio",
 190                .cpu_dai_name = "omap-mcbsp.2",
 191                .codec_dai_name = "twl4030-hifi",
 192                .platform_name = "omap-pcm-audio",
 193                .codec_name = "twl4030-codec",
 194                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 195                           SND_SOC_DAIFMT_CBM_CFM,
 196                .init = sdp3430_twl4030_init,
 197                .ops = &sdp3430_ops,
 198        },
 199        {
 200                .name = "TWL4030 PCM",
 201                .stream_name = "TWL4030 Voice",
 202                .cpu_dai_name = "omap-mcbsp.3",
 203                .codec_dai_name = "twl4030-voice",
 204                .platform_name = "omap-pcm-audio",
 205                .codec_name = "twl4030-codec",
 206                .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 207                           SND_SOC_DAIFMT_CBM_CFM,
 208                .init = sdp3430_twl4030_voice_init,
 209                .ops = &sdp3430_ops,
 210        },
 211};
 212
 213/* Audio machine driver */
 214static struct snd_soc_card snd_soc_sdp3430 = {
 215        .name = "SDP3430",
 216        .owner = THIS_MODULE,
 217        .dai_link = sdp3430_dai,
 218        .num_links = ARRAY_SIZE(sdp3430_dai),
 219
 220        .dapm_widgets = sdp3430_twl4030_dapm_widgets,
 221        .num_dapm_widgets = ARRAY_SIZE(sdp3430_twl4030_dapm_widgets),
 222        .dapm_routes = audio_map,
 223        .num_dapm_routes = ARRAY_SIZE(audio_map),
 224};
 225
 226static struct platform_device *sdp3430_snd_device;
 227
 228static int __init sdp3430_soc_init(void)
 229{
 230        int ret;
 231        u8 pin_mux;
 232
 233        if (!machine_is_omap_3430sdp())
 234                return -ENODEV;
 235        printk(KERN_INFO "SDP3430 SoC init\n");
 236
 237        sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
 238        if (!sdp3430_snd_device) {
 239                printk(KERN_ERR "Platform device allocation failed\n");
 240                return -ENOMEM;
 241        }
 242
 243        platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
 244
 245        /* Set TWL4030 GPIO6 as EXTMUTE signal */
 246        twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
 247                                                TWL4030_INTBR_PMBR1);
 248        pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
 249        pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
 250        twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
 251                                                TWL4030_INTBR_PMBR1);
 252
 253        ret = platform_device_add(sdp3430_snd_device);
 254        if (ret)
 255                goto err1;
 256
 257        return 0;
 258
 259err1:
 260        printk(KERN_ERR "Unable to add platform device\n");
 261        platform_device_put(sdp3430_snd_device);
 262
 263        return ret;
 264}
 265module_init(sdp3430_soc_init);
 266
 267static void __exit sdp3430_soc_exit(void)
 268{
 269        snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 270                                hs_jack_gpios);
 271
 272        platform_device_unregister(sdp3430_snd_device);
 273}
 274module_exit(sdp3430_soc_exit);
 275
 276MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 277MODULE_DESCRIPTION("ALSA SoC SDP3430");
 278MODULE_LICENSE("GPL");
 279
 280