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/soc-dapm.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 static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol,
  70         struct snd_ctl_elem_value *ucontrol)
  71 {
  72         ucontrol->value.integer.value[0] = twl6040_power_mode;
  73         return 0;
  74 }
  75
  76 static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol,
  77         struct snd_ctl_elem_value *ucontrol)
  78 {
  79         if (twl6040_power_mode == ucontrol->value.integer.value[0])
  80                 return 0;
  81
  82         twl6040_power_mode = ucontrol->value.integer.value[0];
  83
  84         return 1;
  85 }
  86
  87 static const char *power_texts[] = {"Low-Power", "High-Performance"};
  88
  89 static const struct soc_enum sdp4430_enum[] = {
  90         SOC_ENUM_SINGLE_EXT(2, power_texts),
  91 };
  92
  93 static const struct snd_kcontrol_new sdp4430_controls[] = {
  94         SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0],
  95                 sdp4430_get_power_mode, sdp4430_set_power_mode),
  96 };
  97
  98 /* SDP4430 machine DAPM */
  99 static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
 100         SND_SOC_DAPM_MIC("Ext Mic", NULL),
 101         SND_SOC_DAPM_SPK("Ext Spk", NULL),
 102         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 103         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 104         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
 105 };
 106
 107 static const struct snd_soc_dapm_route audio_map[] = {
 108         /* External Mics: MAINMIC, SUBMIC with bias*/
 109         {"MAINMIC", NULL, "Main Mic Bias"},
 110         {"SUBMIC", NULL, "Main Mic Bias"},
 111         {"Main Mic Bias", NULL, "Ext Mic"},
 112
 113         /* External Speakers: HFL, HFR */
 114         {"Ext Spk", NULL, "HFL"},
 115         {"Ext Spk", NULL, "HFR"},
 116
 117         /* Headset Mic: HSMIC with bias */
 118         {"HSMIC", NULL, "Headset Mic Bias"},
 119         {"Headset Mic Bias", NULL, "Headset Mic"},
 120
 121         /* Headset Stereophone (Headphone): HSOL, HSOR */
 122         {"Headset Stereophone", NULL, "HSOL"},
 123         {"Headset Stereophone", NULL, "HSOR"},
 124
 125         /* Earphone speaker */
 126         {"Earphone Spk", NULL, "EP"},
 127 };
 128
 129 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 130 {
 131         struct snd_soc_codec *codec = rtd->codec;
 132         int ret;
 133
 134         /* Add SDP4430 specific controls */
 135         ret = snd_soc_add_controls(codec, sdp4430_controls,
 136                                 ARRAY_SIZE(sdp4430_controls));
 137         if (ret)
 138                 return ret;
 139
 140         /* Add SDP4430 specific widgets */
 141         ret = snd_soc_dapm_new_controls(codec, sdp4430_twl6040_dapm_widgets,
 142                                 ARRAY_SIZE(sdp4430_twl6040_dapm_widgets));
 143         if (ret)
 144                 return ret;
 145
 146         /* Set up SDP4430 specific audio path audio_map */
 147         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 148
 149         /* SDP4430 connected pins */
 150         snd_soc_dapm_enable_pin(codec, "Ext Mic");
 151         snd_soc_dapm_enable_pin(codec, "Ext Spk");
 152         snd_soc_dapm_enable_pin(codec, "Headset Mic");
 153         snd_soc_dapm_enable_pin(codec, "Headset Stereophone");
 154
 155         /* TWL6040 not connected pins */
 156         snd_soc_dapm_nc_pin(codec, "AFML");
 157         snd_soc_dapm_nc_pin(codec, "AFMR");
 158
 159         ret = snd_soc_dapm_sync(codec);
 160
 161         return ret;
 162 }
 163
 164 /* Digital audio interface glue - connects codec <--> CPU */
 165 static struct snd_soc_dai_link sdp4430_dai = {
 166         .name = "TWL6040",
 167         .stream_name = "TWL6040",
 168         .cpu_dai_name ="omap-mcpdm-dai",
 169         .codec_dai_name = "twl6040-hifi",
 170         .platform_name = "omap-pcm-audio",
 171         .codec_name = "twl6040-codec",
 172         .init = sdp4430_twl6040_init,
 173         .ops = &sdp4430_ops,
 174 };
 175
 176 /* Audio machine driver */
 177 static struct snd_soc_card snd_soc_sdp4430 = {
 178         .name = "SDP4430",
 179         .dai_link = &sdp4430_dai,
 180         .num_links = 1,
 181 };
 182
 183 static struct platform_device *sdp4430_snd_device;
 184
 185 static int __init sdp4430_soc_init(void)
 186 {
 187         int ret;
 188
 189         if (!machine_is_omap_4430sdp()) {
 190                 pr_debug("Not SDP4430!\n");
 191                 return -ENODEV;
 192         }
 193         printk(KERN_INFO "SDP4430 SoC init\n");
 194
 195         sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
 196         if (!sdp4430_snd_device) {
 197                 printk(KERN_ERR "Platform device allocation failed\n");
 198                 return -ENOMEM;
 199         }
 200
 201         platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
 202
 203         ret = platform_device_add(sdp4430_snd_device);
 204         if (ret)
 205                 goto err;
 206
 207         /* Codec starts in HP mode */
 208         twl6040_power_mode = 1;
 209
 210         return 0;
 211
 212 err:
 213         printk(KERN_ERR "Unable to add platform device\n");
 214         platform_device_put(sdp4430_snd_device);
 215         return ret;
 216 }
 217 module_init(sdp4430_soc_init);
 218
 219 static void __exit sdp4430_soc_exit(void)
 220 {
 221         platform_device_unregister(sdp4430_snd_device);
 222 }
 223 module_exit(sdp4430_soc_exit);
 224
 225 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 226 MODULE_DESCRIPTION("ALSA SoC SDP4430");
 227 MODULE_LICENSE("GPL");
 228