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
  50 static struct snd_soc_card snd_soc_sdp3430;
  51
  52 static 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
  70 static struct snd_soc_ops sdp3430_ops = {
  71         .hw_params = sdp3430_hw_params,
  72 };
  73
  74 /* Headset jack */
  75 static struct snd_soc_jack hs_jack;
  76
  77 /* Headset jack detection DAPM pins */
  78 static 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 */
  90 static 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 */
 100 static 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
 107 static 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
 127 static 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
 171 static 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 */
 186 static struct snd_soc_dai_link sdp3430_dai[] = {
 187         {
 188                 .name = "TWL4030 I2S",
 189                 .stream_name = "TWL4030 Audio",
 190                 .cpu_dai_name = "omap-mcbsp-dai.1",
 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-dai.2",
 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 */
 214 static 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
 226 static struct platform_device *sdp3430_snd_device;
 227
 228 static 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
 259 err1:
 260         printk(KERN_ERR "Unable to add platform device\n");
 261         platform_device_put(sdp3430_snd_device);
 262
 263         return ret;
 264 }
 265 module_init(sdp3430_soc_init);
 266
 267 static 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 }
 274 module_exit(sdp3430_soc_exit);
 275
 276 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 277 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 278 MODULE_LICENSE("GPL");
 279