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 <linux/platform_data/gpio-omap.h>
  37 #include <linux/platform_data/asoc-ti-mcbsp.h>
  38
  39 /* Register descriptions for twl4030 codec part */
  40 #include <linux/mfd/twl4030-audio.h>
  41 #include <linux/module.h>
  42
  43 #include "omap-mcbsp.h"
  44 #include "omap-pcm.h"
  45
  46 /* TWL4030 PMBR1 Register */
  47 #define TWL4030_INTBR_PMBR1             0x0D
  48 /* TWL4030 PMBR1 Register GPIO6 mux bit */
  49 #define TWL4030_GPIO6_PWM0_MUTE(value)  (value << 2)
  50
  51 static struct snd_soc_card snd_soc_sdp3430;
  52
  53 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
  54         struct snd_pcm_hw_params *params)
  55 {
  56         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  57         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  58         int ret;
  59
  60         /* Set the codec system clock for DAC and ADC */
  61         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  62                                             SND_SOC_CLOCK_IN);
  63         if (ret < 0) {
  64                 printk(KERN_ERR "can't set codec system clock\n");
  65                 return ret;
  66         }
  67
  68         return 0;
  69 }
  70
  71 static struct snd_soc_ops sdp3430_ops = {
  72         .hw_params = sdp3430_hw_params,
  73 };
  74
  75 /* Headset jack */
  76 static struct snd_soc_jack hs_jack;
  77
  78 /* Headset jack detection DAPM pins */
  79 static struct snd_soc_jack_pin hs_jack_pins[] = {
  80         {
  81                 .pin = "Headset Mic",
  82                 .mask = SND_JACK_MICROPHONE,
  83         },
  84         {
  85                 .pin = "Headset Stereophone",
  86                 .mask = SND_JACK_HEADPHONE,
  87         },
  88 };
  89
  90 /* Headset jack detection gpios */
  91 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
  92         {
  93                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
  94                 .name = "hsdet-gpio",
  95                 .report = SND_JACK_HEADSET,
  96                 .debounce_time = 200,
  97         },
  98 };
  99
 100 /* SDP3430 machine DAPM */
 101 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
 102         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 103         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 104         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 105         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 106 };
 107
 108 static const struct snd_soc_dapm_route audio_map[] = {
 109         /* External Mics: MAINMIC, SUBMIC with bias*/
 110         {"MAINMIC", NULL, "Mic Bias 1"},
 111         {"SUBMIC", NULL, "Mic Bias 2"},
 112         {"Mic Bias 1", NULL, "Ext Mic"},
 113         {"Mic Bias 2", NULL, "Ext Mic"},
 114
 115         /* External Speakers: HFL, HFR */
 116         {"Ext Spk", NULL, "HFL"},
 117         {"Ext Spk", NULL, "HFR"},
 118
 119         /* Headset Mic: HSMIC with bias */
 120         {"HSMIC", NULL, "Headset Mic Bias"},
 121         {"Headset Mic Bias", NULL, "Headset Mic"},
 122
 123         /* Headset Stereophone (Headphone): HSOL, HSOR */
 124         {"Headset Stereophone", NULL, "HSOL"},
 125         {"Headset Stereophone", NULL, "HSOR"},
 126 };
 127
 128 static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 129 {
 130         struct snd_soc_codec *codec = rtd->codec;
 131         struct snd_soc_dapm_context *dapm = &codec->dapm;
 132         int ret;
 133
 134         /* SDP3430 connected pins */
 135         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 136         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 137         snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 138         snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
 139
 140         /* TWL4030 not connected pins */
 141         snd_soc_dapm_nc_pin(dapm, "AUXL");
 142         snd_soc_dapm_nc_pin(dapm, "AUXR");
 143         snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
 144         snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
 145         snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
 146
 147         snd_soc_dapm_nc_pin(dapm, "OUTL");
 148         snd_soc_dapm_nc_pin(dapm, "OUTR");
 149         snd_soc_dapm_nc_pin(dapm, "EARPIECE");
 150         snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
 151         snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
 152         snd_soc_dapm_nc_pin(dapm, "CARKITL");
 153         snd_soc_dapm_nc_pin(dapm, "CARKITR");
 154
 155         /* Headset jack detection */
 156         ret = snd_soc_jack_new(codec, "Headset Jack",
 157                                 SND_JACK_HEADSET, &hs_jack);
 158         if (ret)
 159                 return ret;
 160
 161         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 162                                 hs_jack_pins);
 163         if (ret)
 164                 return ret;
 165
 166         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 167                                 hs_jack_gpios);
 168
 169         return ret;
 170 }
 171
 172 static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
 173 {
 174         struct snd_soc_codec *codec = rtd->codec;
 175         unsigned short reg;
 176
 177         /* Enable voice interface */
 178         reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
 179         reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 180         codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
 181
 182         return 0;
 183 }
 184
 185
 186 /* Digital audio interface glue - connects codec <--> CPU */
 187 static struct snd_soc_dai_link sdp3430_dai[] = {
 188         {
 189                 .name = "TWL4030 I2S",
 190                 .stream_name = "TWL4030 Audio",
 191                 .cpu_dai_name = "omap-mcbsp.2",
 192                 .codec_dai_name = "twl4030-hifi",
 193                 .platform_name = "omap-pcm-audio",
 194                 .codec_name = "twl4030-codec",
 195                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 196                            SND_SOC_DAIFMT_CBM_CFM,
 197                 .init = sdp3430_twl4030_init,
 198                 .ops = &sdp3430_ops,
 199         },
 200         {
 201                 .name = "TWL4030 PCM",
 202                 .stream_name = "TWL4030 Voice",
 203                 .cpu_dai_name = "omap-mcbsp.3",
 204                 .codec_dai_name = "twl4030-voice",
 205                 .platform_name = "omap-pcm-audio",
 206                 .codec_name = "twl4030-codec",
 207                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 208                            SND_SOC_DAIFMT_CBM_CFM,
 209                 .init = sdp3430_twl4030_voice_init,
 210                 .ops = &sdp3430_ops,
 211         },
 212 };
 213
 214 /* Audio machine driver */
 215 static struct snd_soc_card snd_soc_sdp3430 = {
 216         .name = "SDP3430",
 217         .owner = THIS_MODULE,
 218         .dai_link = sdp3430_dai,
 219         .num_links = ARRAY_SIZE(sdp3430_dai),
 220
 221         .dapm_widgets = sdp3430_twl4030_dapm_widgets,
 222         .num_dapm_widgets = ARRAY_SIZE(sdp3430_twl4030_dapm_widgets),
 223         .dapm_routes = audio_map,
 224         .num_dapm_routes = ARRAY_SIZE(audio_map),
 225 };
 226
 227 static struct platform_device *sdp3430_snd_device;
 228
 229 static int __init sdp3430_soc_init(void)
 230 {
 231         int ret;
 232         u8 pin_mux;
 233
 234         if (!machine_is_omap_3430sdp())
 235                 return -ENODEV;
 236         printk(KERN_INFO "SDP3430 SoC init\n");
 237
 238         sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
 239         if (!sdp3430_snd_device) {
 240                 printk(KERN_ERR "Platform device allocation failed\n");
 241                 return -ENOMEM;
 242         }
 243
 244         platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
 245
 246         /* Set TWL4030 GPIO6 as EXTMUTE signal */
 247         twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
 248                                                 TWL4030_INTBR_PMBR1);
 249         pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
 250         pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
 251         twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
 252                                                 TWL4030_INTBR_PMBR1);
 253
 254         ret = platform_device_add(sdp3430_snd_device);
 255         if (ret)
 256                 goto err1;
 257
 258         return 0;
 259
 260 err1:
 261         printk(KERN_ERR "Unable to add platform device\n");
 262         platform_device_put(sdp3430_snd_device);
 263
 264         return ret;
 265 }
 266 module_init(sdp3430_soc_init);
 267
 268 static void __exit sdp3430_soc_exit(void)
 269 {
 270         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 271                                 hs_jack_gpios);
 272
 273         platform_device_unregister(sdp3430_snd_device);
 274 }
 275 module_exit(sdp3430_soc_exit);
 276
 277 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 278 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 279 MODULE_LICENSE("GPL");
 280