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-mcpdm.h"
  37 #include "omap-pcm.h"
  38 #include "../codecs/twl6040.h"
  39
  40 static int sdp4430_hw_params(struct snd_pcm_substream *substream,
  41         struct snd_pcm_hw_params *params)
  42 {
  43         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  44         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  45         int clk_id, freq;
  46         int ret;
  47
  48         clk_id = twl6040_get_clk_id(rtd->codec);
  49         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
  50                 freq = 38400000;
  51         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
  52                 freq = 32768;
  53         else
  54                 return -EINVAL;
  55
  56         /* set the codec mclk */
  57         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
  58                                 SND_SOC_CLOCK_IN);
  59         if (ret) {
  60                 printk(KERN_ERR "can't set codec system clock\n");
  61                 return ret;
  62         }
  63         return ret;
  64 }
  65
  66 static struct snd_soc_ops sdp4430_ops = {
  67         .hw_params = sdp4430_hw_params,
  68 };
  69
  70 /* Headset jack */
  71 static struct snd_soc_jack hs_jack;
  72
  73 /*Headset jack detection DAPM pins */
  74 static struct snd_soc_jack_pin hs_jack_pins[] = {
  75         {
  76                 .pin = "Headset Mic",
  77                 .mask = SND_JACK_MICROPHONE,
  78         },
  79         {
  80                 .pin = "Headset Stereophone",
  81                 .mask = SND_JACK_HEADPHONE,
  82         },
  83 };
  84
  85 /* SDP4430 machine DAPM */
  86 static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
  87         SND_SOC_DAPM_MIC("Ext Mic", NULL),
  88         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  89         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  90         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
  91         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
  92         SND_SOC_DAPM_INPUT("FM Stereo In"),
  93 };
  94
  95 static const struct snd_soc_dapm_route audio_map[] = {
  96         /* External Mics: MAINMIC, SUBMIC with bias*/
  97         {"MAINMIC", NULL, "Main Mic Bias"},
  98         {"SUBMIC", NULL, "Main Mic Bias"},
  99         {"Main Mic Bias", NULL, "Ext Mic"},
 100
 101         /* External Speakers: HFL, HFR */
 102         {"Ext Spk", NULL, "HFL"},
 103         {"Ext Spk", NULL, "HFR"},
 104
 105         /* Headset Mic: HSMIC with bias */
 106         {"HSMIC", NULL, "Headset Mic Bias"},
 107         {"Headset Mic Bias", NULL, "Headset Mic"},
 108
 109         /* Headset Stereophone (Headphone): HSOL, HSOR */
 110         {"Headset Stereophone", NULL, "HSOL"},
 111         {"Headset Stereophone", NULL, "HSOR"},
 112
 113         /* Earphone speaker */
 114         {"Earphone Spk", NULL, "EP"},
 115
 116         /* Aux/FM Stereo In: AFML, AFMR */
 117         {"AFML", NULL, "FM Stereo In"},
 118         {"AFMR", NULL, "FM Stereo In"},
 119 };
 120
 121 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
 122 {
 123         struct snd_soc_codec *codec = rtd->codec;
 124         int ret, hs_trim;
 125
 126         /*
 127          * Configure McPDM offset cancellation based on the HSOTRIM value from
 128          * twl6040.
 129          */
 130         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
 131         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
 132                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
 133
 134         /* Headset jack detection */
 135         ret = snd_soc_jack_new(codec, "Headset Jack",
 136                                 SND_JACK_HEADSET, &hs_jack);
 137         if (ret)
 138                 return ret;
 139
 140         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
 141                                 hs_jack_pins);
 142
 143         if (machine_is_omap_4430sdp())
 144                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
 145         else
 146                 snd_soc_jack_report(&hs_jack, SND_JACK_HEADSET, SND_JACK_HEADSET);
 147
 148         return ret;
 149 }
 150
 151 /* Digital audio interface glue - connects codec <--> CPU */
 152 static struct snd_soc_dai_link sdp4430_dai = {
 153         .name = "TWL6040",
 154         .stream_name = "TWL6040",
 155         .cpu_dai_name = "omap-mcpdm",
 156         .codec_dai_name = "twl6040-legacy",
 157         .platform_name = "omap-pcm-audio",
 158         .codec_name = "twl6040-codec",
 159         .init = sdp4430_twl6040_init,
 160         .ops = &sdp4430_ops,
 161 };
 162
 163 /* Audio machine driver */
 164 static struct snd_soc_card snd_soc_sdp4430 = {
 165         .name = "SDP4430",
 166         .dai_link = &sdp4430_dai,
 167         .num_links = 1,
 168
 169         .dapm_widgets = sdp4430_twl6040_dapm_widgets,
 170         .num_dapm_widgets = ARRAY_SIZE(sdp4430_twl6040_dapm_widgets),
 171         .dapm_routes = audio_map,
 172         .num_dapm_routes = ARRAY_SIZE(audio_map),
 173 };
 174
 175 static struct platform_device *sdp4430_snd_device;
 176
 177 static int __init sdp4430_soc_init(void)
 178 {
 179         int ret;
 180
 181         if (!machine_is_omap_4430sdp())
 182                 return -ENODEV;
 183         printk(KERN_INFO "SDP4430 SoC init\n");
 184
 185         sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
 186         if (!sdp4430_snd_device) {
 187                 printk(KERN_ERR "Platform device allocation failed\n");
 188                 return -ENOMEM;
 189         }
 190
 191         platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
 192
 193         ret = platform_device_add(sdp4430_snd_device);
 194         if (ret)
 195                 goto err;
 196
 197         return 0;
 198
 199 err:
 200         printk(KERN_ERR "Unable to add platform device\n");
 201         platform_device_put(sdp4430_snd_device);
 202         return ret;
 203 }
 204 module_init(sdp4430_soc_init);
 205
 206 static void __exit sdp4430_soc_exit(void)
 207 {
 208         platform_device_unregister(sdp4430_snd_device);
 209 }
 210 module_exit(sdp4430_soc_exit);
 211
 212 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
 213 MODULE_DESCRIPTION("ALSA SoC SDP4430");
 214 MODULE_LICENSE("GPL");
 215