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 <sound/core.h>
  25 #include <sound/pcm.h>
  26 #include <sound/soc.h>
  27 #include <sound/jack.h>
  28
  29 #include <asm/mach-types.h>
  30 #include <plat/hardware.h>
  31 #include <plat/mux.h>
  32
  33 #include "mcpdm.h"
  34 #include "omap-pcm.h"
  35 #include "../codecs/twl6040.h"
  36
  37 static int twl6040_power_mode;
  38
  39 static int sdp4430_hw_params(struct snd_pcm_substream *substream,
  40         struct snd_pcm_hw_params *params)
  41 {
  42         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  43         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  44         int clk_id, freq;
  45         int ret;
  46
  47         if (twl6040_power_mode) {
  48                 clk_id = TWL6040_SYSCLK_SEL_HPPLL;
  49                 freq = 38400000;
  50         } else {
  51                 clk_id = TWL6040_SYSCLK_SEL_LPPLL;
  52                 freq = 32768;
  53         }
  54
  55         /* set the codec mclk */
  56         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  57                                 SND_SOC_CLOCK_IN);
  58         if (ret) {
  59                 printk(KERN_ERR "can't set codec system clock\n");
  60                 return ret;
  61         }
  62         return ret;
  63 }
  64
  65 static struct snd_soc_ops sdp4430_ops = {
  66         .hw_params = sdp4430_hw_params,
  67 };
  68
  69 /* Headset jack */
  70 static struct snd_soc_jack hs_jack;
  71
  72 /*Headset jack detection DAPM pins */
  73 static struct snd_soc_jack_pin hs_jack_pins[] = {
  74         {
  75                 .pin = "Headset Mic",
  76                 .mask = SND_JACK_MICROPHONE,
  77         },
  78         {
  79                 .pin = "Headset Stereophone",
  80                 .mask = SND_JACK_HEADPHONE,
  81         },
  82 };
  83
  84 static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol,
  85         struct snd_ctl_elem_value *ucontrol)
  86 {
  87         ucontrol->value.integer.value[0] = twl6040_power_mode;
  88         return 0;
  89 }
  90
  91 static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol,
  92         struct snd_ctl_elem_value *ucontrol)
  93 {
  94         if (twl6040_power_mode == ucontrol->value.integer.value[0])
  95                 return 0;
  96
  97         twl6040_power_mode = ucontrol->value.integer.value[0];
  98
  99         return 1;
 100 }
 101
 102 static const char *power_texts[] = {"Low-Power", "High-Performance"};
 103
 104 static const struct soc_enum sdp4430_enum[] = {
 105         SOC_ENUM_SINGLE_EXT(2, power_texts),
 106 };
 107
 108 static const struct snd_kcontrol_new sdp4430_controls[] = {
 109         SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0],
 110                 sdp4430_get_power_mode, sdp4430_set_power_mode),
 111 };
 112
 113 /* SDP4430 machine DAPM */
 114 static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
 115         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 116         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 117         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 118         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 119         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 120         SND_SOC_DAPM_INPUT("Aux/FM Stereo In"),
 121 };
 122
 123 static const struct snd_soc_dapm_route audio_map[] = {
 124         /* External Mics: MAINMIC, SUBMIC with bias*/
 125         {"MAINMIC", NULL, "Main Mic Bias"},
 126         {"SUBMIC", NULL, "Main Mic Bias"},
 127         {"Main Mic Bias", NULL, "Ext Mic"},
 128
 129         /* External Speakers: HFL, HFR */
 130         {"Ext Spk", NULL, "HFL"},
 131         {"Ext Spk", NULL, "HFR"},
 132
 133         /* Headset Mic: HSMIC with bias */
 134         {"HSMIC", NULL, "Headset Mic Bias"},
 135         {"Headset Mic Bias", NULL, "Headset Mic"},
 136
 137         /* Headset Stereophone (Headphone): HSOL, HSOR */
 138         {"Headset Stereophone", NULL, "HSOL"},
 139         {"Headset Stereophone", NULL, "HSOR"},
 140
 141         /* Earphone speaker */
 142         {"Earphone Spk", NULL, "EP"},
 143
 144         /* Aux/FM Stereo In: AFML, AFMR */
 145         {"AFML", NULL, "Aux/FM Stereo In"},
 146         {"AFMR", NULL, "Aux/FM Stereo In"},
 147 };
 148
 149 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 150 {
 151         struct snd_soc_codec *codec = rtd->codec;
 152         struct snd_soc_dapm_context *dapm = &codec->dapm;
 153         int ret;
 154
 155         /* Add SDP4430 specific controls */
 156         ret = snd_soc_add_controls(codec, sdp4430_controls,
 157                                 ARRAY_SIZE(sdp4430_controls));
 158         if (ret)
 159                 return ret;
 160
 161         /* Add SDP4430 specific widgets */
 162         ret = snd_soc_dapm_new_controls(dapm, sdp4430_twl6040_dapm_widgets,
 163                                 ARRAY_SIZE(sdp4430_twl6040_dapm_widgets));
 164         if (ret)
 165                 return ret;
 166
 167         /* Set up SDP4430 specific audio path audio_map */
 168         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 169
 170         /* SDP4430 connected pins */
 171         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
 172         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 173         snd_soc_dapm_enable_pin(dapm, "AFML");
 174         snd_soc_dapm_enable_pin(dapm, "AFMR");
 175         snd_soc_dapm_enable_pin(dapm, "Headset Mic");
 176         snd_soc_dapm_enable_pin(dapm, "Headset Stereophone");
 177
 178         ret = snd_soc_dapm_sync(dapm);
 179         if (ret)
 180                 return ret;
 181
 182         /* Headset jack detection */
 183         ret = snd_soc_jack_new(codec, "Headset Jack",
 184                                 SND_JACK_HEADSET, &hs_jack);
 185         if (ret)
 186                 return ret;
 187
 188         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 189                                 hs_jack_pins);
 190
 191         if (machine_is_omap_4430sdp())
 192                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 193         else
 194                 snd_soc_jack_report(&hs_jack, SND_JACK_HEADSET, SND_JACK_HEADSET);
 195
 196         return ret;
 197 }
 198
 199 /* Digital audio interface glue - connects codec <--> CPU */
 200 static struct snd_soc_dai_link sdp4430_dai = {
 201         .name = "TWL6040",
 202         .stream_name = "TWL6040",
 203         .cpu_dai_name ="omap-mcpdm-dai",
 204         .codec_dai_name = "twl6040-hifi",
 205         .platform_name = "omap-pcm-audio",
 206         .codec_name = "twl6040-codec",
 207         .init = sdp4430_twl6040_init,
 208         .ops = &sdp4430_ops,
 209 };
 210
 211 /* Audio machine driver */
 212 static struct snd_soc_card snd_soc_sdp4430 = {
 213         .name = "SDP4430",
 214         .dai_link = &sdp4430_dai,
 215         .num_links = 1,
 216 };
 217
 218 static struct platform_device *sdp4430_snd_device;
 219
 220 static int __init sdp4430_soc_init(void)
 221 {
 222         int ret;
 223
 224         if (!machine_is_omap_4430sdp())
 225                 return -ENODEV;
 226         printk(KERN_INFO "SDP4430 SoC init\n");
 227
 228         sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
 229         if (!sdp4430_snd_device) {
 230                 printk(KERN_ERR "Platform device allocation failed\n");
 231                 return -ENOMEM;
 232         }
 233
 234         platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
 235
 236         ret = platform_device_add(sdp4430_snd_device);
 237         if (ret)
 238                 goto err;
 239
 240         /* Codec starts in HP mode */
 241         twl6040_power_mode = 1;
 242
 243         return 0;
 244
 245 err:
 246         printk(KERN_ERR "Unable to add platform device\n");
 247         platform_device_put(sdp4430_snd_device);
 248         return ret;
 249 }
 250 module_init(sdp4430_soc_init);
 251
 252 static void __exit sdp4430_soc_exit(void)
 253 {
 254         platform_device_unregister(sdp4430_snd_device);
 255 }
 256 module_exit(sdp4430_soc_exit);
 257
 258 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 259 MODULE_DESCRIPTION("ALSA SoC SDP4430");
 260 MODULE_LICENSE("GPL");
 261