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 #include <sound/soc-dapm.h>
  28
  29 #include <asm/mach-types.h>
  30 #include <mach/hardware.h>
  31 #include <mach/gpio.h>
  32 #include <mach/board-zoom.h>
  33 #include <plat/mcbsp.h>
  34
  35 /* Register descriptions for twl4030 codec part */
  36 #include <linux/mfd/twl4030-codec.h>
  37
  38 #include "omap-mcbsp.h"
  39 #include "omap-pcm.h"
  40
  41 #define ZOOM2_HEADSET_MUX_GPIO          (OMAP_MAX_GPIO_LINES + 15)
  42
  43 static int zoom2_hw_params(struct snd_pcm_substream *substream,
  44                                 struct snd_pcm_hw_params *params)
  45 {
  46         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  47         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  48         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  49         int ret;
  50
  51         /* Set codec DAI configuration */
  52         ret = snd_soc_dai_set_fmt(codec_dai,
  53                                   SND_SOC_DAIFMT_I2S |
  54                                   SND_SOC_DAIFMT_NB_NF |
  55                                   SND_SOC_DAIFMT_CBM_CFM);
  56         if (ret < 0) {
  57                 printk(KERN_ERR "can't set codec DAI configuration\n");
  58                 return ret;
  59         }
  60
  61         /* Set cpu DAI configuration */
  62         ret = snd_soc_dai_set_fmt(cpu_dai,
  63                                   SND_SOC_DAIFMT_I2S |
  64                                   SND_SOC_DAIFMT_NB_NF |
  65                                   SND_SOC_DAIFMT_CBM_CFM);
  66         if (ret < 0) {
  67                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  68                 return ret;
  69         }
  70
  71         /* Set the codec system clock for DAC and ADC */
  72         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  73                                         SND_SOC_CLOCK_IN);
  74         if (ret < 0) {
  75                 printk(KERN_ERR "can't set codec system clock\n");
  76                 return ret;
  77         }
  78
  79         return 0;
  80 }
  81
  82 static struct snd_soc_ops zoom2_ops = {
  83         .hw_params = zoom2_hw_params,
  84 };
  85
  86 static int zoom2_hw_voice_params(struct snd_pcm_substream *substream,
  87                                 struct snd_pcm_hw_params *params)
  88 {
  89         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  90         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  91         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  92         int ret;
  93
  94         /* Set codec DAI configuration */
  95         ret = snd_soc_dai_set_fmt(codec_dai,
  96                                 SND_SOC_DAIFMT_DSP_A |
  97                                 SND_SOC_DAIFMT_IB_NF |
  98                                 SND_SOC_DAIFMT_CBM_CFM);
  99         if (ret) {
 100                 printk(KERN_ERR "can't set codec DAI configuration\n");
 101                 return ret;
 102         }
 103
 104         /* Set cpu DAI configuration */
 105         ret = snd_soc_dai_set_fmt(cpu_dai,
 106                                 SND_SOC_DAIFMT_DSP_A |
 107                                 SND_SOC_DAIFMT_IB_NF |
 108                                 SND_SOC_DAIFMT_CBM_CFM);
 109         if (ret < 0) {
 110                 printk(KERN_ERR "can't set cpu DAI configuration\n");
 111                 return ret;
 112         }
 113
 114         /* Set the codec system clock for DAC and ADC */
 115         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
 116                                         SND_SOC_CLOCK_IN);
 117         if (ret < 0) {
 118                 printk(KERN_ERR "can't set codec system clock\n");
 119                 return ret;
 120         }
 121
 122         return 0;
 123 }
 124
 125 static struct snd_soc_ops zoom2_voice_ops = {
 126         .hw_params = zoom2_hw_voice_params,
 127 };
 128
 129 /* Zoom2 machine DAPM */
 130 static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = {
 131         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 132         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 133         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 134         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 135         SND_SOC_DAPM_LINE("Aux In", NULL),
 136 };
 137
 138 static const struct snd_soc_dapm_route audio_map[] = {
 139         /* External Mics: MAINMIC, SUBMIC with bias*/
 140         {"MAINMIC", NULL, "Mic Bias 1"},
 141         {"SUBMIC", NULL, "Mic Bias 2"},
 142         {"Mic Bias 1", NULL, "Ext Mic"},
 143         {"Mic Bias 2", NULL, "Ext Mic"},
 144
 145         /* External Speakers: HFL, HFR */
 146         {"Ext Spk", NULL, "HFL"},
 147         {"Ext Spk", NULL, "HFR"},
 148
 149         /* Headset Stereophone:  HSOL, HSOR */
 150         {"Headset Stereophone", NULL, "HSOL"},
 151         {"Headset Stereophone", NULL, "HSOR"},
 152
 153         /* Headset Mic: HSMIC with bias */
 154         {"HSMIC", NULL, "Headset Mic Bias"},
 155         {"Headset Mic Bias", NULL, "Headset Mic"},
 156
 157         /* Aux In: AUXL, AUXR */
 158         {"Aux In", NULL, "AUXL"},
 159         {"Aux In", NULL, "AUXR"},
 160 };
 161
 162 static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd)
 163 {
 164         struct snd_soc_codec *codec = rtd->codec;
 165         struct snd_soc_dapm_context *dapm = &codec->dapm;
 166         int ret;
 167
 168         /* Add Zoom2 specific widgets */
 169         ret = snd_soc_dapm_new_controls(dapm, zoom2_twl4030_dapm_widgets,
 170                                 ARRAY_SIZE(zoom2_twl4030_dapm_widgets));
 171         if (ret)
 172                 return ret;
 173
 174         /* Set up Zoom2 specific audio path audio_map */
 175         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 176
 177         /* Zoom2 connected pins */
 178         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 179         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 180         snd_soc_dapm_enable_pin(dapm, "Headset Mic");
 181         snd_soc_dapm_enable_pin(dapm, "Headset Stereophone");
 182         snd_soc_dapm_enable_pin(dapm, "Aux In");
 183
 184         /* TWL4030 not connected pins */
 185         snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
 186         snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
 187         snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
 188         snd_soc_dapm_nc_pin(dapm, "EARPIECE");
 189         snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
 190         snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
 191         snd_soc_dapm_nc_pin(dapm, "CARKITL");
 192         snd_soc_dapm_nc_pin(dapm, "CARKITR");
 193
 194         ret = snd_soc_dapm_sync(dapm);
 195
 196         return ret;
 197 }
 198
 199 static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
 200 {
 201         struct snd_soc_codec *codec = rtd->codec;
 202         unsigned short reg;
 203
 204         /* Enable voice interface */
 205         reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
 206         reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
 207         codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
 208
 209         return 0;
 210 }
 211
 212 /* Digital audio interface glue - connects codec <--> CPU */
 213 static struct snd_soc_dai_link zoom2_dai[] = {
 214         {
 215                 .name = "TWL4030 I2S",
 216                 .stream_name = "TWL4030 Audio",
 217                 .cpu_dai_name = "omap-mcbsp-dai.1",
 218                 .codec_dai_name = "twl4030-hifi",
 219                 .platform_name = "omap-pcm-audio",
 220                 .codec_name = "twl4030-codec",
 221                 .init = zoom2_twl4030_init,
 222                 .ops = &zoom2_ops,
 223         },
 224         {
 225                 .name = "TWL4030 PCM",
 226                 .stream_name = "TWL4030 Voice",
 227                 .cpu_dai_name = "omap-mcbsp-dai.2",
 228                 .codec_dai_name = "twl4030-voice",
 229                 .platform_name = "omap-pcm-audio",
 230                 .codec_name = "twl4030-codec",
 231                 .init = zoom2_twl4030_voice_init,
 232                 .ops = &zoom2_voice_ops,
 233         },
 234 };
 235
 236 /* Audio machine driver */
 237 static struct snd_soc_card snd_soc_zoom2 = {
 238         .name = "Zoom2",
 239         .dai_link = zoom2_dai,
 240         .num_links = ARRAY_SIZE(zoom2_dai),
 241 };
 242
 243 static struct platform_device *zoom2_snd_device;
 244
 245 static int __init zoom2_soc_init(void)
 246 {
 247         int ret;
 248
 249         if (!machine_is_omap_zoom2())
 250                 return -ENODEV;
 251         printk(KERN_INFO "Zoom2 SoC init\n");
 252
 253         zoom2_snd_device = platform_device_alloc("soc-audio", -1);
 254         if (!zoom2_snd_device) {
 255                 printk(KERN_ERR "Platform device allocation failed\n");
 256                 return -ENOMEM;
 257         }
 258
 259         platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2);
 260         ret = platform_device_add(zoom2_snd_device);
 261         if (ret)
 262                 goto err1;
 263
 264         BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0);
 265         gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0);
 266
 267         BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0);
 268         gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0);
 269
 270         return 0;
 271
 272 err1:
 273         printk(KERN_ERR "Unable to add platform device\n");
 274         platform_device_put(zoom2_snd_device);
 275
 276         return ret;
 277 }
 278 module_init(zoom2_soc_init);
 279
 280 static void __exit zoom2_soc_exit(void)
 281 {
 282         gpio_free(ZOOM2_HEADSET_MUX_GPIO);
 283         gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO);
 284
 285         platform_device_unregister(zoom2_snd_device);
 286 }
 287 module_exit(zoom2_soc_exit);
 288
 289 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 290 MODULE_DESCRIPTION("ALSA SoC Zoom2");
 291 MODULE_LICENSE("GPL");
 292