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