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 <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/soc.h>
  30 #include <sound/jack.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <linux/platform_data/gpio-omap.h>
  34
  35 #include <linux/module.h>
  36
  37 #include "omap-mcbsp.h"
  38 #include "omap-pcm.h"
  39
  40 static struct snd_soc_card snd_soc_sdp3430;
  41
  42 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
  43         struct snd_pcm_hw_params *params)
  44 {
  45         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  46         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  47         int ret;
  48
  49         /* Set the codec system clock for DAC and ADC */
  50         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  51                                             SND_SOC_CLOCK_IN);
  52         if (ret < 0) {
  53                 printk(KERN_ERR "can't set codec system clock\n");
  54                 return ret;
  55         }
  56
  57         return 0;
  58 }
  59
  60 static struct snd_soc_ops sdp3430_ops = {
  61         .hw_params = sdp3430_hw_params,
  62 };
  63
  64 /* Headset jack */
  65 static struct snd_soc_jack hs_jack;
  66
  67 /* Headset jack detection DAPM pins */
  68 static struct snd_soc_jack_pin hs_jack_pins[] = {
  69         {
  70                 .pin = "Headset Mic",
  71                 .mask = SND_JACK_MICROPHONE,
  72         },
  73         {
  74                 .pin = "Headset Stereophone",
  75                 .mask = SND_JACK_HEADPHONE,
  76         },
  77 };
  78
  79 /* Headset jack detection gpios */
  80 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
  81         {
  82                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
  83                 .name = "hsdet-gpio",
  84                 .report = SND_JACK_HEADSET,
  85                 .debounce_time = 200,
  86         },
  87 };
  88
  89 /* SDP3430 machine DAPM */
  90 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
  91         SND_SOC_DAPM_MIC("Ext Mic", NULL),
  92         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  93         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  94         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
  95 };
  96
  97 static const struct snd_soc_dapm_route audio_map[] = {
  98         /* External Mics: MAINMIC, SUBMIC with bias */
  99         {"MAINMIC", NULL, "Ext Mic"},
 100         {"SUBMIC", NULL, "Ext Mic"},
 101         {"Ext Mic", NULL, "Mic Bias 1"},
 102         {"Ext Mic", NULL, "Mic Bias 2"},
 103
 104         /* External Speakers: HFL, HFR */
 105         {"Ext Spk", NULL, "HFL"},
 106         {"Ext Spk", NULL, "HFR"},
 107
 108         /* Headset Mic: HSMIC with bias */
 109         {"HSMIC", NULL, "Headset Mic"},
 110         {"Headset Mic", NULL, "Headset Mic Bias"},
 111
 112         /* Headset Stereophone (Headphone): HSOL, HSOR */
 113         {"Headset Stereophone", NULL, "HSOL"},
 114         {"Headset Stereophone", NULL, "HSOR"},
 115 };
 116
 117 static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 118 {
 119         struct snd_soc_codec *codec = rtd->codec;
 120         struct snd_soc_dapm_context *dapm = &codec->dapm;
 121         int ret;
 122
 123         /* SDP3430 connected pins */
 124         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 125         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 126         snd_soc_dapm_disable_pin(dapm, "Headset Mic");
 127         snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
 128
 129         /* TWL4030 not connected pins */
 130         snd_soc_dapm_nc_pin(dapm, "AUXL");
 131         snd_soc_dapm_nc_pin(dapm, "AUXR");
 132         snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
 133         snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
 134         snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
 135
 136         snd_soc_dapm_nc_pin(dapm, "OUTL");
 137         snd_soc_dapm_nc_pin(dapm, "OUTR");
 138         snd_soc_dapm_nc_pin(dapm, "EARPIECE");
 139         snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
 140         snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
 141         snd_soc_dapm_nc_pin(dapm, "CARKITL");
 142         snd_soc_dapm_nc_pin(dapm, "CARKITR");
 143
 144         /* Headset jack detection */
 145         ret = snd_soc_jack_new(codec, "Headset Jack",
 146                                 SND_JACK_HEADSET, &hs_jack);
 147         if (ret)
 148                 return ret;
 149
 150         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 151                                 hs_jack_pins);
 152         if (ret)
 153                 return ret;
 154
 155         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 156                                 hs_jack_gpios);
 157
 158         return ret;
 159 }
 160
 161 /* Digital audio interface glue - connects codec <--> CPU */
 162 static struct snd_soc_dai_link sdp3430_dai[] = {
 163         {
 164                 .name = "TWL4030 I2S",
 165                 .stream_name = "TWL4030 Audio",
 166                 .cpu_dai_name = "omap-mcbsp.2",
 167                 .codec_dai_name = "twl4030-hifi",
 168                 .platform_name = "omap-pcm-audio",
 169                 .codec_name = "twl4030-codec",
 170                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 171                            SND_SOC_DAIFMT_CBM_CFM,
 172                 .init = sdp3430_twl4030_init,
 173                 .ops = &sdp3430_ops,
 174         },
 175         {
 176                 .name = "TWL4030 PCM",
 177                 .stream_name = "TWL4030 Voice",
 178                 .cpu_dai_name = "omap-mcbsp.3",
 179                 .codec_dai_name = "twl4030-voice",
 180                 .platform_name = "omap-pcm-audio",
 181                 .codec_name = "twl4030-codec",
 182                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
 183                            SND_SOC_DAIFMT_CBM_CFM,
 184                 .ops = &sdp3430_ops,
 185         },
 186 };
 187
 188 /* Audio machine driver */
 189 static struct snd_soc_card snd_soc_sdp3430 = {
 190         .name = "SDP3430",
 191         .owner = THIS_MODULE,
 192         .dai_link = sdp3430_dai,
 193         .num_links = ARRAY_SIZE(sdp3430_dai),
 194
 195         .dapm_widgets = sdp3430_twl4030_dapm_widgets,
 196         .num_dapm_widgets = ARRAY_SIZE(sdp3430_twl4030_dapm_widgets),
 197         .dapm_routes = audio_map,
 198         .num_dapm_routes = ARRAY_SIZE(audio_map),
 199 };
 200
 201 static struct platform_device *sdp3430_snd_device;
 202
 203 static int __init sdp3430_soc_init(void)
 204 {
 205         int ret;
 206
 207         if (!machine_is_omap_3430sdp())
 208                 return -ENODEV;
 209         printk(KERN_INFO "SDP3430 SoC init\n");
 210
 211         sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
 212         if (!sdp3430_snd_device) {
 213                 printk(KERN_ERR "Platform device allocation failed\n");
 214                 return -ENOMEM;
 215         }
 216
 217         platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
 218
 219         ret = platform_device_add(sdp3430_snd_device);
 220         if (ret)
 221                 goto err1;
 222
 223         return 0;
 224
 225 err1:
 226         printk(KERN_ERR "Unable to add platform device\n");
 227         platform_device_put(sdp3430_snd_device);
 228
 229         return ret;
 230 }
 231 module_init(sdp3430_soc_init);
 232
 233 static void __exit sdp3430_soc_exit(void)
 234 {
 235         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 236                                 hs_jack_gpios);
 237
 238         platform_device_unregister(sdp3430_snd_device);
 239 }
 240 module_exit(sdp3430_soc_exit);
 241
 242 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 243 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 244 MODULE_LICENSE("GPL");
 245