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/soc-dapm.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 <mach/mcbsp.h>
  37
  38 #include "omap-mcbsp.h"
  39 #include "omap-pcm.h"
  40 #include "../codecs/twl4030.h"
  41
  42 static struct snd_soc_card snd_soc_sdp3430;
  43
  44 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
  45         struct snd_pcm_hw_params *params)
  46 {
  47         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  48         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  49         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  50         int ret;
  51
  52         /* Set codec DAI configuration */
  53         ret = snd_soc_dai_set_fmt(codec_dai,
  54                                   SND_SOC_DAIFMT_I2S |
  55                                   SND_SOC_DAIFMT_NB_NF |
  56                                   SND_SOC_DAIFMT_CBM_CFM);
  57         if (ret < 0) {
  58                 printk(KERN_ERR "can't set codec DAI configuration\n");
  59                 return ret;
  60         }
  61
  62         /* Set cpu DAI configuration */
  63         ret = snd_soc_dai_set_fmt(cpu_dai,
  64                                   SND_SOC_DAIFMT_I2S |
  65                                   SND_SOC_DAIFMT_NB_NF |
  66                                   SND_SOC_DAIFMT_CBM_CFM);
  67         if (ret < 0) {
  68                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  69                 return ret;
  70         }
  71
  72         /* Set the codec system clock for DAC and ADC */
  73         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  74                                             SND_SOC_CLOCK_IN);
  75         if (ret < 0) {
  76                 printk(KERN_ERR "can't set codec system clock\n");
  77                 return ret;
  78         }
  79
  80         return 0;
  81 }
  82
  83 static struct snd_soc_ops sdp3430_ops = {
  84         .hw_params = sdp3430_hw_params,
  85 };
  86
  87 /* Headset jack */
  88 static struct snd_soc_jack hs_jack;
  89
  90 /* Headset jack detection DAPM pins */
  91 static struct snd_soc_jack_pin hs_jack_pins[] = {
  92         {
  93                 .pin = "Headset Mic",
  94                 .mask = SND_JACK_MICROPHONE,
  95         },
  96         {
  97                 .pin = "Headset Stereophone",
  98                 .mask = SND_JACK_HEADPHONE,
  99         },
 100 };
 101
 102 /* Headset jack detection gpios */
 103 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
 104         {
 105                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
 106                 .name = "hsdet-gpio",
 107                 .report = SND_JACK_HEADSET,
 108                 .debounce_time = 200,
 109         },
 110 };
 111
 112 /* SDP3430 machine DAPM */
 113 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
 114         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 115         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 116         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 117         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 118 };
 119
 120 static const struct snd_soc_dapm_route audio_map[] = {
 121         /* External Mics: MAINMIC, SUBMIC with bias*/
 122         {"MAINMIC", NULL, "Mic Bias 1"},
 123         {"SUBMIC", NULL, "Mic Bias 2"},
 124         {"Mic Bias 1", NULL, "Ext Mic"},
 125         {"Mic Bias 2", NULL, "Ext Mic"},
 126
 127         /* External Speakers: HFL, HFR */
 128         {"Ext Spk", NULL, "HFL"},
 129         {"Ext Spk", NULL, "HFR"},
 130
 131         /* Headset Mic: HSMIC with bias */
 132         {"HSMIC", NULL, "Headset Mic Bias"},
 133         {"Headset Mic Bias", NULL, "Headset Mic"},
 134
 135         /* Headset Stereophone (Headphone): HSOL, HSOR */
 136         {"Headset Stereophone", NULL, "HSOL"},
 137         {"Headset Stereophone", NULL, "HSOR"},
 138 };
 139
 140 static int sdp3430_twl4030_init(struct snd_soc_codec *codec)
 141 {
 142         int ret;
 143
 144         /* Add SDP3430 specific widgets */
 145         ret = snd_soc_dapm_new_controls(codec, sdp3430_twl4030_dapm_widgets,
 146                                 ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
 147         if (ret)
 148                 return ret;
 149
 150         /* Set up SDP3430 specific audio path audio_map */
 151         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 152
 153         /* SDP3430 connected pins */
 154         snd_soc_dapm_enable_pin(codec, "Ext Mic");
 155         snd_soc_dapm_enable_pin(codec, "Ext Spk");
 156         snd_soc_dapm_disable_pin(codec, "Headset Mic");
 157         snd_soc_dapm_disable_pin(codec, "Headset Stereophone");
 158
 159         /* TWL4030 not connected pins */
 160         snd_soc_dapm_nc_pin(codec, "AUXL");
 161         snd_soc_dapm_nc_pin(codec, "AUXR");
 162         snd_soc_dapm_nc_pin(codec, "CARKITMIC");
 163         snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
 164         snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
 165
 166         snd_soc_dapm_nc_pin(codec, "OUTL");
 167         snd_soc_dapm_nc_pin(codec, "OUTR");
 168         snd_soc_dapm_nc_pin(codec, "EARPIECE");
 169         snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
 170         snd_soc_dapm_nc_pin(codec, "PREDRIVER");
 171         snd_soc_dapm_nc_pin(codec, "CARKITL");
 172         snd_soc_dapm_nc_pin(codec, "CARKITR");
 173
 174         ret = snd_soc_dapm_sync(codec);
 175         if (ret)
 176                 return ret;
 177
 178         /* Headset jack detection */
 179         ret = snd_soc_jack_new(&snd_soc_sdp3430, "Headset Jack",
 180                                 SND_JACK_HEADSET, &hs_jack);
 181         if (ret)
 182                 return ret;
 183
 184         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 185                                 hs_jack_pins);
 186         if (ret)
 187                 return ret;
 188
 189         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 190                                 hs_jack_gpios);
 191
 192         return ret;
 193 }
 194
 195 /* Digital audio interface glue - connects codec <--> CPU */
 196 static struct snd_soc_dai_link sdp3430_dai = {
 197         .name = "TWL4030",
 198         .stream_name = "TWL4030",
 199         .cpu_dai = &omap_mcbsp_dai[0],
 200         .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
 201         .init = sdp3430_twl4030_init,
 202         .ops = &sdp3430_ops,
 203 };
 204
 205 /* Audio machine driver */
 206 static struct snd_soc_card snd_soc_sdp3430 = {
 207         .name = "SDP3430",
 208         .platform = &omap_soc_platform,
 209         .dai_link = &sdp3430_dai,
 210         .num_links = 1,
 211 };
 212
 213 /* Audio subsystem */
 214 static struct snd_soc_device sdp3430_snd_devdata = {
 215         .card = &snd_soc_sdp3430,
 216         .codec_dev = &soc_codec_dev_twl4030,
 217 };
 218
 219 static struct platform_device *sdp3430_snd_device;
 220
 221 static int __init sdp3430_soc_init(void)
 222 {
 223         int ret;
 224
 225         if (!machine_is_omap_3430sdp()) {
 226                 pr_debug("Not SDP3430!\n");
 227                 return -ENODEV;
 228         }
 229         printk(KERN_INFO "SDP3430 SoC init\n");
 230
 231         sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
 232         if (!sdp3430_snd_device) {
 233                 printk(KERN_ERR "Platform device allocation failed\n");
 234                 return -ENOMEM;
 235         }
 236
 237         platform_set_drvdata(sdp3430_snd_device, &sdp3430_snd_devdata);
 238         sdp3430_snd_devdata.dev = &sdp3430_snd_device->dev;
 239         *(unsigned int *)sdp3430_dai.cpu_dai->private_data = 1; /* McBSP2 */
 240
 241         ret = platform_device_add(sdp3430_snd_device);
 242         if (ret)
 243                 goto err1;
 244
 245         return 0;
 246
 247 err1:
 248         printk(KERN_ERR "Unable to add platform device\n");
 249         platform_device_put(sdp3430_snd_device);
 250
 251         return ret;
 252 }
 253 module_init(sdp3430_soc_init);
 254
 255 static void __exit sdp3430_soc_exit(void)
 256 {
 257         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
 258                                 hs_jack_gpios);
 259
 260         platform_device_unregister(sdp3430_snd_device);
 261 }
 262 module_exit(sdp3430_soc_exit);
 263
 264 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 265 MODULE_DESCRIPTION("ALSA SoC SDP3430");
 266 MODULE_LICENSE("GPL");
 267