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
  26 #include <sound/core.h>
  27 #include <sound/pcm.h>
  28 #include <sound/soc.h>
  29 #include <sound/jack.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <plat/hardware.h>
  33 #include <plat/mux.h>
  34
  35 #include "omap-mcpdm.h"
  36 #include "omap-pcm.h"
  37 #include "../codecs/twl6040.h"
  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         clk_id = twl6040_get_clk_id(rtd->codec);
  48         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  49                 freq = 38400000;
  50         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  51                 freq = 32768;
  52         else
  53                 return -EINVAL;
  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 /* SDP4430 machine DAPM */
  85 static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
  86         SND_SOC_DAPM_MIC("Ext Mic", NULL),
  87         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  88         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  89         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
  90         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
  91         SND_SOC_DAPM_INPUT("FM Stereo In"),
  92 };
  93
  94 static const struct snd_soc_dapm_route audio_map[] = {
  95         /* External Mics: MAINMIC, SUBMIC with bias*/
  96         {"MAINMIC", NULL, "Main Mic Bias"},
  97         {"SUBMIC", NULL, "Main Mic Bias"},
  98         {"Main Mic Bias", NULL, "Ext Mic"},
  99
 100         /* External Speakers: HFL, HFR */
 101         {"Ext Spk", NULL, "HFL"},
 102         {"Ext Spk", NULL, "HFR"},
 103
 104         /* Headset Mic: HSMIC with bias */
 105         {"HSMIC", NULL, "Headset Mic Bias"},
 106         {"Headset Mic Bias", NULL, "Headset Mic"},
 107
 108         /* Headset Stereophone (Headphone): HSOL, HSOR */
 109         {"Headset Stereophone", NULL, "HSOL"},
 110         {"Headset Stereophone", NULL, "HSOR"},
 111
 112         /* Earphone speaker */
 113         {"Earphone Spk", NULL, "EP"},
 114
 115         /* Aux/FM Stereo In: AFML, AFMR */
 116         {"AFML", NULL, "FM Stereo In"},
 117         {"AFMR", NULL, "FM Stereo In"},
 118 };
 119
 120 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 121 {
 122         struct snd_soc_codec *codec = rtd->codec;
 123         int ret, hs_trim;
 124
 125         /*
 126          * Configure McPDM offset cancellation based on the HSOTRIM value from
 127          * twl6040.
 128          */
 129         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
 130         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 131                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 132
 133         /* Headset jack detection */
 134         ret = snd_soc_jack_new(codec, "Headset Jack",
 135                                 SND_JACK_HEADSET, &hs_jack);
 136         if (ret)
 137                 return ret;
 138
 139         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 140                                 hs_jack_pins);
 141
 142         if (machine_is_omap_4430sdp())
 143                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 144         else
 145                 snd_soc_jack_report(&hs_jack, SND_JACK_HEADSET, SND_JACK_HEADSET);
 146
 147         return ret;
 148 }
 149
 150 /* Digital audio interface glue - connects codec <--> CPU */
 151 static struct snd_soc_dai_link sdp4430_dai = {
 152         .name = "TWL6040",
 153         .stream_name = "TWL6040",
 154         .cpu_dai_name = "omap-mcpdm",
 155         .codec_dai_name = "twl6040-legacy",
 156         .platform_name = "omap-pcm-audio",
 157         .codec_name = "twl6040-codec",
 158         .init = sdp4430_twl6040_init,
 159         .ops = &sdp4430_ops,
 160 };
 161
 162 /* Audio machine driver */
 163 static struct snd_soc_card snd_soc_sdp4430 = {
 164         .name = "SDP4430",
 165         .dai_link = &sdp4430_dai,
 166         .num_links = 1,
 167
 168         .dapm_widgets = sdp4430_twl6040_dapm_widgets,
 169         .num_dapm_widgets = ARRAY_SIZE(sdp4430_twl6040_dapm_widgets),
 170         .dapm_routes = audio_map,
 171         .num_dapm_routes = ARRAY_SIZE(audio_map),
 172 };
 173
 174 static struct platform_device *sdp4430_snd_device;
 175
 176 static int __init sdp4430_soc_init(void)
 177 {
 178         int ret;
 179
 180         if (!machine_is_omap_4430sdp())
 181                 return -ENODEV;
 182         printk(KERN_INFO "SDP4430 SoC init\n");
 183
 184         sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
 185         if (!sdp4430_snd_device) {
 186                 printk(KERN_ERR "Platform device allocation failed\n");
 187                 return -ENOMEM;
 188         }
 189
 190         platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
 191
 192         ret = platform_device_add(sdp4430_snd_device);
 193         if (ret)
 194                 goto err;
 195
 196         return 0;
 197
 198 err:
 199         printk(KERN_ERR "Unable to add platform device\n");
 200         platform_device_put(sdp4430_snd_device);
 201         return ret;
 202 }
 203 module_init(sdp4430_soc_init);
 204
 205 static void __exit sdp4430_soc_exit(void)
 206 {
 207         platform_device_unregister(sdp4430_snd_device);
 208 }
 209 module_exit(sdp4430_soc_exit);
 210
 211 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 212 MODULE_DESCRIPTION("ALSA SoC SDP4430");
 213 MODULE_LICENSE("GPL");
 214