/* * zoom2.c -- SoC audio for Zoom2 * * Author: Misael Lopez Cruz * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * */ #include #include #include #include #include #include #include #include #include #include /* Register descriptions for twl4030 codec part */ #include #include #include "omap-mcbsp.h" #include "omap-pcm.h" #define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15) static int zoom2_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->codec_dai; int ret; /* Set the codec system clock for DAC and ADC */ ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000, SND_SOC_CLOCK_IN); if (ret < 0) { printk(KERN_ERR "can't set codec system clock\n"); return ret; } return 0; } static struct snd_soc_ops zoom2_ops = { .hw_params = zoom2_hw_params, }; /* Zoom2 machine DAPM */ static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = { SND_SOC_DAPM_MIC("Ext Mic", NULL), SND_SOC_DAPM_SPK("Ext Spk", NULL), SND_SOC_DAPM_MIC("Headset Mic", NULL), SND_SOC_DAPM_HP("Headset Stereophone", NULL), SND_SOC_DAPM_LINE("Aux In", NULL), }; static const struct snd_soc_dapm_route audio_map[] = { /* External Mics: MAINMIC, SUBMIC with bias*/ {"MAINMIC", NULL, "Mic Bias 1"}, {"SUBMIC", NULL, "Mic Bias 2"}, {"Mic Bias 1", NULL, "Ext Mic"}, {"Mic Bias 2", NULL, "Ext Mic"}, /* External Speakers: HFL, HFR */ {"Ext Spk", NULL, "HFL"}, {"Ext Spk", NULL, "HFR"}, /* Headset Stereophone: HSOL, HSOR */ {"Headset Stereophone", NULL, "HSOL"}, {"Headset Stereophone", NULL, "HSOR"}, /* Headset Mic: HSMIC with bias */ {"HSMIC", NULL, "Headset Mic Bias"}, {"Headset Mic Bias", NULL, "Headset Mic"}, /* Aux In: AUXL, AUXR */ {"Aux In", NULL, "AUXL"}, {"Aux In", NULL, "AUXR"}, }; static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; struct snd_soc_dapm_context *dapm = &codec->dapm; /* TWL4030 not connected pins */ snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); snd_soc_dapm_nc_pin(dapm, "EARPIECE"); snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); snd_soc_dapm_nc_pin(dapm, "CARKITL"); snd_soc_dapm_nc_pin(dapm, "CARKITR"); return 0; } static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_codec *codec = rtd->codec; unsigned short reg; /* Enable voice interface */ reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF); reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN; codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg); return 0; } /* Digital audio interface glue - connects codec <--> CPU */ static struct snd_soc_dai_link zoom2_dai[] = { { .name = "TWL4030 I2S", .stream_name = "TWL4030 Audio", .cpu_dai_name = "omap-mcbsp-dai.1", .codec_dai_name = "twl4030-hifi", .platform_name = "omap-pcm-audio", .codec_name = "twl4030-codec", .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM, .init = zoom2_twl4030_init, .ops = &zoom2_ops, }, { .name = "TWL4030 PCM", .stream_name = "TWL4030 Voice", .cpu_dai_name = "omap-mcbsp-dai.2", .codec_dai_name = "twl4030-voice", .platform_name = "omap-pcm-audio", .codec_name = "twl4030-codec", .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF | SND_SOC_DAIFMT_CBM_CFM, .init = zoom2_twl4030_voice_init, .ops = &zoom2_ops, }, }; /* Audio machine driver */ static struct snd_soc_card snd_soc_zoom2 = { .name = "Zoom2", .owner = THIS_MODULE, .dai_link = zoom2_dai, .num_links = ARRAY_SIZE(zoom2_dai), .dapm_widgets = zoom2_twl4030_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(zoom2_twl4030_dapm_widgets), .dapm_routes = audio_map, .num_dapm_routes = ARRAY_SIZE(audio_map), }; static struct platform_device *zoom2_snd_device; static int __init zoom2_soc_init(void) { int ret; if (!machine_is_omap_zoom2()) return -ENODEV; printk(KERN_INFO "Zoom2 SoC init\n"); zoom2_snd_device = platform_device_alloc("soc-audio", -1); if (!zoom2_snd_device) { printk(KERN_ERR "Platform device allocation failed\n"); return -ENOMEM; } platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2); ret = platform_device_add(zoom2_snd_device); if (ret) goto err1; BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0); gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0); BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0); gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0); return 0; err1: printk(KERN_ERR "Unable to add platform device\n"); platform_device_put(zoom2_snd_device); return ret; } module_init(zoom2_soc_init); static void __exit zoom2_soc_exit(void) { gpio_free(ZOOM2_HEADSET_MUX_GPIO); gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO); platform_device_unregister(zoom2_snd_device); } module_exit(zoom2_soc_exit); MODULE_AUTHOR("Misael Lopez Cruz "); MODULE_DESCRIPTION("ALSA SoC Zoom2"); MODULE_LICENSE("GPL");