sound/soc/omap/zoom2.c

   1 /*
   2  * zoom2.c  --  SoC audio for Zoom2
   3  *
   4  * Author: Misael Lopez Cruz <x0052729@ti.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/clk.h>
  23 #include <linux/platform_device.h>
  24 #include <sound/core.h>
  25 #include <sound/pcm.h>
  26 #include <sound/soc.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <mach/hardware.h>
  30 #include <mach/gpio.h>
  31 #include <mach/board-zoom.h>
  32 #include <plat/mcbsp.h>
  33
  34 /* Register descriptions for twl4030 codec part */
  35 #include <linux/mfd/twl4030-codec.h>
  36
  37 #include "omap-mcbsp.h"
  38 #include "omap-pcm.h"
  39
  40 #define ZOOM2_HEADSET_MUX_GPIO          (OMAP_MAX_GPIO_LINES + 15)
  41
  42 static int zoom2_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         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  48         int ret;
  49
  50         /* Set codec DAI configuration */
  51         ret = snd_soc_dai_set_fmt(codec_dai,
  52                                   SND_SOC_DAIFMT_I2S |
  53                                   SND_SOC_DAIFMT_NB_NF |
  54                                   SND_SOC_DAIFMT_CBM_CFM);
  55         if (ret < 0) {
  56                 printk(KERN_ERR "can't set codec DAI configuration\n");
  57                 return ret;
  58         }
  59
  60         /* Set cpu DAI configuration */
  61         ret = snd_soc_dai_set_fmt(cpu_dai,
  62                                   SND_SOC_DAIFMT_I2S |
  63                                   SND_SOC_DAIFMT_NB_NF |
  64                                   SND_SOC_DAIFMT_CBM_CFM);
  65         if (ret < 0) {
  66                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  67                 return ret;
  68         }
  69
  70         /* Set the codec system clock for DAC and ADC */
  71         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  72                                         SND_SOC_CLOCK_IN);
  73         if (ret < 0) {
  74                 printk(KERN_ERR "can't set codec system clock\n");
  75                 return ret;
  76         }
  77
  78         return 0;
  79 }
  80
  81 static struct snd_soc_ops zoom2_ops = {
  82         .hw_params = zoom2_hw_params,
  83 };
  84
  85 static int zoom2_hw_voice_params(struct snd_pcm_substream *substream,
  86                                 struct snd_pcm_hw_params *params)
  87 {
  88         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  89         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  90         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  91         int ret;
  92
  93         /* Set codec DAI configuration */
  94         ret = snd_soc_dai_set_fmt(codec_dai,
  95                                 SND_SOC_DAIFMT_DSP_A |
  96                                 SND_SOC_DAIFMT_IB_NF |
  97                                 SND_SOC_DAIFMT_CBM_CFM);
  98         if (ret) {
  99                 printk(KERN_ERR "can't set codec DAI configuration\n");
 100                 return ret;
 101         }
 102
 103         /* Set cpu DAI configuration */
 104         ret = snd_soc_dai_set_fmt(cpu_dai,
 105                                 SND_SOC_DAIFMT_DSP_A |
 106                                 SND_SOC_DAIFMT_IB_NF |
 107                                 SND_SOC_DAIFMT_CBM_CFM);
 108         if (ret < 0) {
 109                 printk(KERN_ERR "can't set cpu DAI configuration\n");
 110                 return ret;
 111         }
 112
 113         /* Set the codec system clock for DAC and ADC */
 114         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
 115                                         SND_SOC_CLOCK_IN);
 116         if (ret < 0) {
 117                 printk(KERN_ERR "can't set codec system clock\n");
 118                 return ret;
 119         }
 120
 121         return 0;
 122 }
 123
 124 static struct snd_soc_ops zoom2_voice_ops = {
 125         .hw_params = zoom2_hw_voice_params,
 126 };
 127
 128 /* Zoom2 machine DAPM */
 129 static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = {
 130         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 131         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 132         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 133         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 134         SND_SOC_DAPM_LINE("Aux In", NULL),
 135 };
 136
 137 static const struct snd_soc_dapm_route audio_map[] = {
 138         /* External Mics: MAINMIC, SUBMIC with bias*/
 139         {"MAINMIC", NULL, "Mic Bias 1"},
 140         {"SUBMIC", NULL, "Mic Bias 2"},
 141         {"Mic Bias 1", NULL, "Ext Mic"},
 142         {"Mic Bias 2", NULL, "Ext Mic"},
 143
 144         /* External Speakers: HFL, HFR */
 145         {"Ext Spk", NULL, "HFL"},
 146         {"Ext Spk", NULL, "HFR"},
 147
 148         /* Headset Stereophone:  HSOL, HSOR */
 149         {"Headset Stereophone", NULL, "HSOL"},
 150         {"Headset Stereophone", NULL, "HSOR"},
 151
 152         /* Headset Mic: HSMIC with bias */
 153         {"HSMIC", NULL, "Headset Mic Bias"},
 154         {"Headset Mic Bias", NULL, "Headset Mic"},
 155
 156         /* Aux In: AUXL, AUXR */
 157         {"Aux In", NULL, "AUXL"},
 158         {"Aux In", NULL, "AUXR"},
 159 };
 160
 161 static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 162 {
 163         struct snd_soc_codec *codec = rtd->codec;
 164         struct snd_soc_dapm_context *dapm = &codec->dapm;
 165         int ret;
 166
 167         /* Add Zoom2 specific widgets */
 168         ret = snd_soc_dapm_new_controls(dapm, zoom2_twl4030_dapm_widgets,
 169                                 ARRAY_SIZE(zoom2_twl4030_dapm_widgets));
 170         if (ret)
 171                 return ret;
 172
 173         /* Set up Zoom2 specific audio path audio_map */
 174         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 175
 176         /* Zoom2 connected pins */
 177         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 178         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 179         snd_soc_dapm_enable_pin(dapm, "Headset Mic");
 180         snd_soc_dapm_enable_pin(dapm, "Headset Stereophone");
 181         snd_soc_dapm_enable_pin(dapm, "Aux In");
 182
 183         /* TWL4030 not connected pins */
 184         snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
 185         snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
 186         snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
 187         snd_soc_dapm_nc_pin(dapm, "EARPIECE");
 188         snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
 189         snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
 190         snd_soc_dapm_nc_pin(dapm, "CARKITL");
 191         snd_soc_dapm_nc_pin(dapm, "CARKITR");
 192
 193         ret = snd_soc_dapm_sync(dapm);
 194
 195         return ret;
 196 }
 197
 198 static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
 199 {
 200         struct snd_soc_codec *codec = rtd->codec;
 201         unsigned short reg;
 202
 203         /* Enable voice interface */
 204         reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
 205         reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 206         codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
 207
 208         return 0;
 209 }
 210
 211 /* Digital audio interface glue - connects codec <--> CPU */
 212 static struct snd_soc_dai_link zoom2_dai[] = {
 213         {
 214                 .name = "TWL4030 I2S",
 215                 .stream_name = "TWL4030 Audio",
 216                 .cpu_dai_name = "omap-mcbsp-dai.1",
 217                 .codec_dai_name = "twl4030-hifi",
 218                 .platform_name = "omap-pcm-audio",
 219                 .codec_name = "twl4030-codec",
 220                 .init = zoom2_twl4030_init,
 221                 .ops = &zoom2_ops,
 222         },
 223         {
 224                 .name = "TWL4030 PCM",
 225                 .stream_name = "TWL4030 Voice",
 226                 .cpu_dai_name = "omap-mcbsp-dai.2",
 227                 .codec_dai_name = "twl4030-voice",
 228                 .platform_name = "omap-pcm-audio",
 229                 .codec_name = "twl4030-codec",
 230                 .init = zoom2_twl4030_voice_init,
 231                 .ops = &zoom2_voice_ops,
 232         },
 233 };
 234
 235 /* Audio machine driver */
 236 static struct snd_soc_card snd_soc_zoom2 = {
 237         .name = "Zoom2",
 238         .dai_link = zoom2_dai,
 239         .num_links = ARRAY_SIZE(zoom2_dai),
 240 };
 241
 242 static struct platform_device *zoom2_snd_device;
 243
 244 static int __init zoom2_soc_init(void)
 245 {
 246         int ret;
 247
 248         if (!machine_is_omap_zoom2())
 249                 return -ENODEV;
 250         printk(KERN_INFO "Zoom2 SoC init\n");
 251
 252         zoom2_snd_device = platform_device_alloc("soc-audio", -1);
 253         if (!zoom2_snd_device) {
 254                 printk(KERN_ERR "Platform device allocation failed\n");
 255                 return -ENOMEM;
 256         }
 257
 258         platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2);
 259         ret = platform_device_add(zoom2_snd_device);
 260         if (ret)
 261                 goto err1;
 262
 263         BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0);
 264         gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0);
 265
 266         BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0);
 267         gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0);
 268
 269         return 0;
 270
 271 err1:
 272         printk(KERN_ERR "Unable to add platform device\n");
 273         platform_device_put(zoom2_snd_device);
 274
 275         return ret;
 276 }
 277 module_init(zoom2_soc_init);
 278
 279 static void __exit zoom2_soc_exit(void)
 280 {
 281         gpio_free(ZOOM2_HEADSET_MUX_GPIO);
 282         gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO);
 283
 284         platform_device_unregister(zoom2_snd_device);
 285 }
 286 module_exit(zoom2_soc_exit);
 287
 288 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 289 MODULE_DESCRIPTION("ALSA SoC Zoom2");
 290 MODULE_LICENSE("GPL");
 291