sound/soc/omap/sdp4430.c

   1 /*
   2  * sdp4430.c  --  SoC audio for TI OMAP4430 SDP
   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 <linux/mfd/twl6040.h>
  25 #include <linux/module.h>
  26
  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 <plat/hardware.h>
  34 #include <plat/mux.h>
  35
  36 #include "omap-dmic.h"
  37 #include "omap-mcpdm.h"
  38 #include "omap-pcm.h"
  39 #include "../codecs/twl6040.h"
  40
  41 static int sdp4430_hw_params(struct snd_pcm_substream *substream,
  42         struct snd_pcm_hw_params *params)
  43 {
  44         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  45         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  46         int clk_id, freq;
  47         int ret;
  48
  49         clk_id = twl6040_get_clk_id(rtd->codec);
  50         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  51                 freq = 38400000;
  52         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  53                 freq = 32768;
  54         else
  55                 return -EINVAL;
  56
  57         /* set the codec mclk */
  58         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  59                                 SND_SOC_CLOCK_IN);
  60         if (ret) {
  61                 printk(KERN_ERR "can't set codec system clock\n");
  62                 return ret;
  63         }
  64         return ret;
  65 }
  66
  67 static struct snd_soc_ops sdp4430_ops = {
  68         .hw_params = sdp4430_hw_params,
  69 };
  70
  71 static int sdp4430_dmic_hw_params(struct snd_pcm_substream *substream,
  72         struct snd_pcm_hw_params *params)
  73 {
  74         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  75         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  76         int ret = 0;
  77
  78         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
  79                                      19200000, SND_SOC_CLOCK_IN);
  80         if (ret < 0) {
  81                 printk(KERN_ERR "can't set DMIC cpu system clock\n");
  82                 return ret;
  83         }
  84         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
  85                                      SND_SOC_CLOCK_OUT);
  86         if (ret < 0) {
  87                 printk(KERN_ERR "can't set DMIC output clock\n");
  88                 return ret;
  89         }
  90         return 0;
  91 }
  92
  93 static struct snd_soc_ops sdp4430_dmic_ops = {
  94         .hw_params = sdp4430_dmic_hw_params,
  95 };
  96
  97 /* Headset jack */
  98 static struct snd_soc_jack hs_jack;
  99
 100 /*Headset jack detection DAPM pins */
 101 static struct snd_soc_jack_pin hs_jack_pins[] = {
 102         {
 103                 .pin = "Headset Mic",
 104                 .mask = SND_JACK_MICROPHONE,
 105         },
 106         {
 107                 .pin = "Headset Stereophone",
 108                 .mask = SND_JACK_HEADPHONE,
 109         },
 110 };
 111
 112 /* SDP4430 machine DAPM */
 113 static const struct snd_soc_dapm_widget sdp4430_twl6040_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         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 119         SND_SOC_DAPM_INPUT("FM Stereo In"),
 120 };
 121
 122 static const struct snd_soc_dapm_route audio_map[] = {
 123         /* External Mics: MAINMIC, SUBMIC with bias*/
 124         {"MAINMIC", NULL, "Main Mic Bias"},
 125         {"SUBMIC", NULL, "Main Mic Bias"},
 126         {"Main Mic Bias", NULL, "Ext Mic"},
 127
 128         /* External Speakers: HFL, HFR */
 129         {"Ext Spk", NULL, "HFL"},
 130         {"Ext Spk", NULL, "HFR"},
 131
 132         /* Headset Mic: HSMIC with bias */
 133         {"HSMIC", NULL, "Headset Mic Bias"},
 134         {"Headset Mic Bias", NULL, "Headset Mic"},
 135
 136         /* Headset Stereophone (Headphone): HSOL, HSOR */
 137         {"Headset Stereophone", NULL, "HSOL"},
 138         {"Headset Stereophone", NULL, "HSOR"},
 139
 140         /* Earphone speaker */
 141         {"Earphone Spk", NULL, "EP"},
 142
 143         /* Aux/FM Stereo In: AFML, AFMR */
 144         {"AFML", NULL, "FM Stereo In"},
 145         {"AFMR", NULL, "FM Stereo In"},
 146 };
 147
 148 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 149 {
 150         struct snd_soc_codec *codec = rtd->codec;
 151         int ret, hs_trim;
 152
 153         /*
 154          * Configure McPDM offset cancellation based on the HSOTRIM value from
 155          * twl6040.
 156          */
 157         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
 158         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 159                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 160
 161         /* Headset jack detection */
 162         ret = snd_soc_jack_new(codec, "Headset Jack",
 163                                 SND_JACK_HEADSET, &hs_jack);
 164         if (ret)
 165                 return ret;
 166
 167         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 168                                 hs_jack_pins);
 169
 170         if (machine_is_omap_4430sdp())
 171                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 172         else
 173                 snd_soc_jack_report(&hs_jack, SND_JACK_HEADSET, SND_JACK_HEADSET);
 174
 175         return ret;
 176 }
 177
 178 static const struct snd_soc_dapm_widget sdp4430_dmic_dapm_widgets[] = {
 179         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 180 };
 181
 182 static const struct snd_soc_dapm_route dmic_audio_map[] = {
 183         {"DMic", NULL, "Digital Mic1 Bias"},
 184         {"Digital Mic1 Bias", NULL, "Digital Mic"},
 185 };
 186
 187 static int sdp4430_dmic_init(struct snd_soc_pcm_runtime *rtd)
 188 {
 189         struct snd_soc_codec *codec = rtd->codec;
 190         struct snd_soc_dapm_context *dapm = &codec->dapm;
 191         int ret;
 192
 193         ret = snd_soc_dapm_new_controls(dapm, sdp4430_dmic_dapm_widgets,
 194                                 ARRAY_SIZE(sdp4430_dmic_dapm_widgets));
 195         if (ret)
 196                 return ret;
 197
 198         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
 199                                 ARRAY_SIZE(dmic_audio_map));
 200 }
 201
 202 /* Digital audio interface glue - connects codec <--> CPU */
 203 static struct snd_soc_dai_link sdp4430_dai[] = {
 204         {
 205                 .name = "TWL6040",
 206                 .stream_name = "TWL6040",
 207                 .cpu_dai_name = "omap-mcpdm",
 208                 .codec_dai_name = "twl6040-legacy",
 209                 .platform_name = "omap-pcm-audio",
 210                 .codec_name = "twl6040-codec",
 211                 .init = sdp4430_twl6040_init,
 212                 .ops = &sdp4430_ops,
 213         },
 214         {
 215                 .name = "DMIC",
 216                 .stream_name = "DMIC Capture",
 217                 .cpu_dai_name = "omap-dmic",
 218                 .codec_dai_name = "dmic-hifi",
 219                 .platform_name = "omap-pcm-audio",
 220                 .codec_name = "dmic-codec",
 221                 .init = sdp4430_dmic_init,
 222                 .ops = &sdp4430_dmic_ops,
 223         },
 224 };
 225
 226 /* Audio machine driver */
 227 static struct snd_soc_card snd_soc_sdp4430 = {
 228         .name = "SDP4430",
 229         .owner = THIS_MODULE,
 230         .dai_link = sdp4430_dai,
 231         .num_links = ARRAY_SIZE(sdp4430_dai),
 232
 233         .dapm_widgets = sdp4430_twl6040_dapm_widgets,
 234         .num_dapm_widgets = ARRAY_SIZE(sdp4430_twl6040_dapm_widgets),
 235         .dapm_routes = audio_map,
 236         .num_dapm_routes = ARRAY_SIZE(audio_map),
 237 };
 238
 239 static struct platform_device *sdp4430_snd_device;
 240
 241 static int __init sdp4430_soc_init(void)
 242 {
 243         int ret;
 244
 245         if (!machine_is_omap_4430sdp())
 246                 return -ENODEV;
 247         printk(KERN_INFO "SDP4430 SoC init\n");
 248
 249         sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
 250         if (!sdp4430_snd_device) {
 251                 printk(KERN_ERR "Platform device allocation failed\n");
 252                 return -ENOMEM;
 253         }
 254
 255         platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
 256
 257         ret = platform_device_add(sdp4430_snd_device);
 258         if (ret)
 259                 goto err;
 260
 261         return 0;
 262
 263 err:
 264         printk(KERN_ERR "Unable to add platform device\n");
 265         platform_device_put(sdp4430_snd_device);
 266         return ret;
 267 }
 268 module_init(sdp4430_soc_init);
 269
 270 static void __exit sdp4430_soc_exit(void)
 271 {
 272         platform_device_unregister(sdp4430_snd_device);
 273 }
 274 module_exit(sdp4430_soc_exit);
 275
 276 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 277 MODULE_DESCRIPTION("ALSA SoC SDP4430");
 278 MODULE_LICENSE("GPL");
 279