sound/soc/omap/omap3pandora.c

   1 /*
   2  * omap3pandora.c  --  SoC audio for Pandora Handheld Console
   3  *
   4  * Author: Gražvydas Ignotas <notasas@gmail.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 <linux/gpio.h>
  25 #include <linux/delay.h>
  26
  27 #include <sound/core.h>
  28 #include <sound/pcm.h>
  29 #include <sound/soc.h>
  30 #include <sound/soc-dapm.h>
  31
  32 #include <asm/mach-types.h>
  33
  34 #include "omap-mcbsp.h"
  35 #include "omap-pcm.h"
  36 #include "../codecs/twl4030.h"
  37
  38 #define OMAP3_PANDORA_DAC_POWER_GPIO    118
  39 #define OMAP3_PANDORA_AMP_POWER_GPIO    14
  40
  41 #define PREFIX "ASoC omap3pandora: "
  42
  43 static int omap3pandora_cmn_hw_params(struct snd_pcm_substream *substream,
  44         struct snd_pcm_hw_params *params, unsigned int fmt)
  45 {
  46         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  47         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  48         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  49         int ret;
  50
  51         /* Set codec DAI configuration */
  52         ret = snd_soc_dai_set_fmt(codec_dai, fmt);
  53         if (ret < 0) {
  54                 pr_err(PREFIX "can't set codec DAI configuration\n");
  55                 return ret;
  56         }
  57
  58         /* Set cpu DAI configuration */
  59         ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
  60         if (ret < 0) {
  61                 pr_err(PREFIX "can't set cpu DAI configuration\n");
  62                 return ret;
  63         }
  64
  65         /* Set the codec system clock for DAC and ADC */
  66         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
  67                                             SND_SOC_CLOCK_IN);
  68         if (ret < 0) {
  69                 pr_err(PREFIX "can't set codec system clock\n");
  70                 return ret;
  71         }
  72
  73         /* Set McBSP clock to external */
  74         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_SYSCLK_CLKS_EXT,
  75                                      256 * params_rate(params),
  76                                      SND_SOC_CLOCK_IN);
  77         if (ret < 0) {
  78                 pr_err(PREFIX "can't set cpu system clock\n");
  79                 return ret;
  80         }
  81
  82         ret = snd_soc_dai_set_clkdiv(cpu_dai, OMAP_MCBSP_CLKGDV, 8);
  83         if (ret < 0) {
  84                 pr_err(PREFIX "can't set SRG clock divider\n");
  85                 return ret;
  86         }
  87
  88         return 0;
  89 }
  90
  91 static int omap3pandora_out_hw_params(struct snd_pcm_substream *substream,
  92         struct snd_pcm_hw_params *params)
  93 {
  94         return omap3pandora_cmn_hw_params(substream, params,
  95                                           SND_SOC_DAIFMT_I2S |
  96                                           SND_SOC_DAIFMT_IB_NF |
  97                                           SND_SOC_DAIFMT_CBS_CFS);
  98 }
  99
 100 static int omap3pandora_in_hw_params(struct snd_pcm_substream *substream,
 101         struct snd_pcm_hw_params *params)
 102 {
 103         return omap3pandora_cmn_hw_params(substream, params,
 104                                           SND_SOC_DAIFMT_I2S |
 105                                           SND_SOC_DAIFMT_NB_NF |
 106                                           SND_SOC_DAIFMT_CBS_CFS);
 107 }
 108
 109 static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w,
 110         struct snd_kcontrol *k, int event)
 111 {
 112         if (SND_SOC_DAPM_EVENT_ON(event)) {
 113                 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1);
 114                 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1);
 115         } else {
 116                 gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
 117                 mdelay(1);
 118                 gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
 119         }
 120
 121         return 0;
 122 }
 123
 124 /*
 125  * Audio paths on Pandora board:
 126  *
 127  *  |O| ---> PCM DAC +-> AMP -> Headphone Jack
 128  *  |M|         A    +--------> Line Out
 129  *  |A| <~~clk~~+
 130  *  |P| <--- TWL4030 <--------- Line In and MICs
 131  */
 132 static const struct snd_soc_dapm_widget omap3pandora_out_dapm_widgets[] = {
 133         SND_SOC_DAPM_DAC("PCM DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0),
 134         SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM,
 135                            0, 0, NULL, 0, omap3pandora_hp_event,
 136                            SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
 137         SND_SOC_DAPM_HP("Headphone Jack", NULL),
 138         SND_SOC_DAPM_LINE("Line Out", NULL),
 139 };
 140
 141 static const struct snd_soc_dapm_widget omap3pandora_in_dapm_widgets[] = {
 142         SND_SOC_DAPM_MIC("Mic (internal)", NULL),
 143         SND_SOC_DAPM_MIC("Mic (external)", NULL),
 144         SND_SOC_DAPM_LINE("Line In", NULL),
 145 };
 146
 147 static const struct snd_soc_dapm_route omap3pandora_out_map[] = {
 148         {"PCM DAC", NULL, "APLL Enable"},
 149         {"Headphone Amplifier", NULL, "PCM DAC"},
 150         {"Line Out", NULL, "PCM DAC"},
 151         {"Headphone Jack", NULL, "Headphone Amplifier"},
 152 };
 153
 154 static const struct snd_soc_dapm_route omap3pandora_in_map[] = {
 155         {"AUXL", NULL, "Line In"},
 156         {"AUXR", NULL, "Line In"},
 157
 158         {"MAINMIC", NULL, "Mic Bias 1"},
 159         {"Mic Bias 1", NULL, "Mic (internal)"},
 160
 161         {"SUBMIC", NULL, "Mic Bias 2"},
 162         {"Mic Bias 2", NULL, "Mic (external)"},
 163 };
 164
 165 static int omap3pandora_out_init(struct snd_soc_codec *codec)
 166 {
 167         int ret;
 168
 169         /* All TWL4030 output pins are floating */
 170         snd_soc_dapm_nc_pin(codec, "OUTL");
 171         snd_soc_dapm_nc_pin(codec, "OUTR");
 172         snd_soc_dapm_nc_pin(codec, "EARPIECE");
 173         snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
 174         snd_soc_dapm_nc_pin(codec, "PREDRIVER");
 175         snd_soc_dapm_nc_pin(codec, "HSOL");
 176         snd_soc_dapm_nc_pin(codec, "HSOR");
 177         snd_soc_dapm_nc_pin(codec, "CARKITL");
 178         snd_soc_dapm_nc_pin(codec, "CARKITR");
 179         snd_soc_dapm_nc_pin(codec, "HFL");
 180         snd_soc_dapm_nc_pin(codec, "HFR");
 181         snd_soc_dapm_nc_pin(codec, "VIBRA");
 182
 183         ret = snd_soc_dapm_new_controls(codec, omap3pandora_out_dapm_widgets,
 184                                 ARRAY_SIZE(omap3pandora_out_dapm_widgets));
 185         if (ret < 0)
 186                 return ret;
 187
 188         snd_soc_dapm_add_routes(codec, omap3pandora_out_map,
 189                 ARRAY_SIZE(omap3pandora_out_map));
 190
 191         return snd_soc_dapm_sync(codec);
 192 }
 193
 194 static int omap3pandora_in_init(struct snd_soc_codec *codec)
 195 {
 196         int ret;
 197
 198         /* Not comnnected */
 199         snd_soc_dapm_nc_pin(codec, "HSMIC");
 200         snd_soc_dapm_nc_pin(codec, "CARKITMIC");
 201         snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
 202         snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
 203
 204         ret = snd_soc_dapm_new_controls(codec, omap3pandora_in_dapm_widgets,
 205                                 ARRAY_SIZE(omap3pandora_in_dapm_widgets));
 206         if (ret < 0)
 207                 return ret;
 208
 209         snd_soc_dapm_add_routes(codec, omap3pandora_in_map,
 210                 ARRAY_SIZE(omap3pandora_in_map));
 211
 212         return snd_soc_dapm_sync(codec);
 213 }
 214
 215 static struct snd_soc_ops omap3pandora_out_ops = {
 216         .hw_params = omap3pandora_out_hw_params,
 217 };
 218
 219 static struct snd_soc_ops omap3pandora_in_ops = {
 220         .hw_params = omap3pandora_in_hw_params,
 221 };
 222
 223 /* Digital audio interface glue - connects codec <--> CPU */
 224 static struct snd_soc_dai_link omap3pandora_dai[] = {
 225         {
 226                 .name = "PCM1773",
 227                 .stream_name = "HiFi Out",
 228                 .cpu_dai = &omap_mcbsp_dai[0],
 229                 .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
 230                 .ops = &omap3pandora_out_ops,
 231                 .init = omap3pandora_out_init,
 232         }, {
 233                 .name = "TWL4030",
 234                 .stream_name = "Line/Mic In",
 235                 .cpu_dai = &omap_mcbsp_dai[1],
 236                 .codec_dai = &twl4030_dai[TWL4030_DAI_HIFI],
 237                 .ops = &omap3pandora_in_ops,
 238                 .init = omap3pandora_in_init,
 239         }
 240 };
 241
 242 /* SoC card */
 243 static struct snd_soc_card snd_soc_card_omap3pandora = {
 244         .name = "omap3pandora",
 245         .platform = &omap_soc_platform,
 246         .dai_link = omap3pandora_dai,
 247         .num_links = ARRAY_SIZE(omap3pandora_dai),
 248 };
 249
 250 /* Audio subsystem */
 251 static struct snd_soc_device omap3pandora_snd_data = {
 252         .card = &snd_soc_card_omap3pandora,
 253         .codec_dev = &soc_codec_dev_twl4030,
 254 };
 255
 256 static struct platform_device *omap3pandora_snd_device;
 257
 258 static int __init omap3pandora_soc_init(void)
 259 {
 260         int ret;
 261
 262         if (!machine_is_omap3_pandora())
 263                 return -ENODEV;
 264
 265         pr_info("OMAP3 Pandora SoC init\n");
 266
 267         ret = gpio_request(OMAP3_PANDORA_DAC_POWER_GPIO, "dac_power");
 268         if (ret) {
 269                 pr_err(PREFIX "Failed to get DAC power GPIO\n");
 270                 return ret;
 271         }
 272
 273         ret = gpio_direction_output(OMAP3_PANDORA_DAC_POWER_GPIO, 0);
 274         if (ret) {
 275                 pr_err(PREFIX "Failed to set DAC power GPIO direction\n");
 276                 goto fail0;
 277         }
 278
 279         ret = gpio_request(OMAP3_PANDORA_AMP_POWER_GPIO, "amp_power");
 280         if (ret) {
 281                 pr_err(PREFIX "Failed to get amp power GPIO\n");
 282                 goto fail0;
 283         }
 284
 285         ret = gpio_direction_output(OMAP3_PANDORA_AMP_POWER_GPIO, 0);
 286         if (ret) {
 287                 pr_err(PREFIX "Failed to set amp power GPIO direction\n");
 288                 goto fail1;
 289         }
 290
 291         omap3pandora_snd_device = platform_device_alloc("soc-audio", -1);
 292         if (omap3pandora_snd_device == NULL) {
 293                 pr_err(PREFIX "Platform device allocation failed\n");
 294                 ret = -ENOMEM;
 295                 goto fail1;
 296         }
 297
 298         platform_set_drvdata(omap3pandora_snd_device, &omap3pandora_snd_data);
 299         omap3pandora_snd_data.dev = &omap3pandora_snd_device->dev;
 300         *(unsigned int *)omap_mcbsp_dai[0].private_data = 1; /* McBSP2 */
 301         *(unsigned int *)omap_mcbsp_dai[1].private_data = 3; /* McBSP4 */
 302
 303         ret = platform_device_add(omap3pandora_snd_device);
 304         if (ret) {
 305                 pr_err(PREFIX "Unable to add platform device\n");
 306                 goto fail2;
 307         }
 308
 309         return 0;
 310
 311 fail2:
 312         platform_device_put(omap3pandora_snd_device);
 313 fail1:
 314         gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
 315 fail0:
 316         gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
 317         return ret;
 318 }
 319 module_init(omap3pandora_soc_init);
 320
 321 static void __exit omap3pandora_soc_exit(void)
 322 {
 323         platform_device_unregister(omap3pandora_snd_device);
 324         gpio_free(OMAP3_PANDORA_AMP_POWER_GPIO);
 325         gpio_free(OMAP3_PANDORA_DAC_POWER_GPIO);
 326 }
 327 module_exit(omap3pandora_soc_exit);
 328
 329 MODULE_AUTHOR("Grazvydas Ignotas <notasas@gmail.com>");
 330 MODULE_DESCRIPTION("ALSA SoC OMAP3 Pandora");
 331 MODULE_LICENSE("GPL");