diff options
Diffstat (limited to 'sound/soc/omap/gta04-audio.c')
-rw-r--r-- | sound/soc/omap/gta04-audio.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/sound/soc/omap/gta04-audio.c b/sound/soc/omap/gta04-audio.c new file mode 100644 index 0000000..3d55038 --- /dev/null +++ b/sound/soc/omap/gta04-audio.c @@ -0,0 +1,255 @@ +/* + * gta04.c -- SoC audio for GTA04 (based on OMAP3 Beagle) + * + * Author: Steve Sakoman <steve@sakoman.com> + * Author: Nikolaus Schaller <hns@goldelico.com> + * + * 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 <linux/clk.h> +#include <linux/platform_device.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/soc-dapm.h> + +#include <asm/mach-types.h> +#include <mach/hardware.h> +#include <mach/gpio.h> +#include <plat/mcbsp.h> + +#include "omap-mcbsp.h" +#include "omap-pcm.h" +#include "../codecs/twl4030.h" + +static int omap3gta04_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; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + unsigned int fmt; + int ret; + + switch (params_channels(params)) { + case 2: /* Stereo I2S mode */ + fmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM; + break; + case 4: /* Four channel TDM mode */ + fmt = SND_SOC_DAIFMT_DSP_A | + SND_SOC_DAIFMT_IB_NF | + SND_SOC_DAIFMT_CBM_CFM; + break; + default: + return -EINVAL; + } + + /* Set codec DAI configuration */ + ret = snd_soc_dai_set_fmt(codec_dai, fmt); + if (ret < 0) { + printk(KERN_ERR "can't set codec DAI configuration\n"); + return ret; + } + + /* Set cpu DAI configuration */ + ret = snd_soc_dai_set_fmt(cpu_dai, fmt); + if (ret < 0) { + printk(KERN_ERR "can't set cpu DAI configuration\n"); + return 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; +} + +/* this shows how we could control the AUX in/out switch or the Video in/out */ + +static int omap3pandora_hp_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + /* + if (SND_SOC_DAPM_EVENT_ON(event)) { + gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 1); + gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 1); + } else { + gpio_set_value(OMAP3_PANDORA_AMP_POWER_GPIO, 0); + mdelay(1); + gpio_set_value(OMAP3_PANDORA_DAC_POWER_GPIO, 0); + } + */ + return 0; +} + +static const struct snd_soc_dapm_widget gta04_dapm_widgets[] = { + SND_SOC_DAPM_DAC("PCM DAC", "HiFi Playback", SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_PGA_E("Headphone Amplifier", SND_SOC_NOPM, + 0, 0, NULL, 0, omap3pandora_hp_event, + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_LINE("Line Out", NULL), + SND_SOC_DAPM_MIC("Internal Mic", NULL), + SND_SOC_DAPM_MIC("Headphone Mic", NULL), + SND_SOC_DAPM_LINE("Line In", NULL), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + {"Headphone Amplifier", NULL, "PCM DAC"}, + {"Line Out", NULL, "PCM DAC"}, + {"Headphone Jack", NULL, "Headphone Amplifier"}, + + {"AUXL", NULL, "Line In"}, + {"AUXR", NULL, "Line In"}, + + /* Headset Mic: HSMIC with bias */ + {"HSMIC", NULL, "Headset Mic Bias"}, + {"Headset Mic Bias", NULL, "Headphone Mic"}, + + {"MAINMIC", NULL, "Mic Bias 1"}, + {"Mic Bias 1", NULL, "Internal Mic"}, + /* + {"SUBMIC", NULL, "Mic Bias 2"}, + {"Mic Bias 2", NULL, "Mic (external)"}, + */ +}; + +static int omap3gta04_init(struct snd_soc_codec *codec) +{ + int ret; + struct snd_soc_dapm_context *dapm = &codec->dapm; + + ret = snd_soc_dapm_new_controls(dapm, gta04_dapm_widgets, + ARRAY_SIZE(gta04_dapm_widgets)); + if (ret < 0) + return ret; + + snd_soc_dapm_add_routes(dapm, audio_map, + ARRAY_SIZE(audio_map)); + +// snd_soc_dapm_enable_pin(codec, "Ext Mic"); +// snd_soc_dapm_enable_pin(codec, "Ext Spk"); +// snd_soc_dapm_disable_pin(codec, "Headphone Mic"); +// snd_soc_dapm_disable_pin(codec, "Headphone Amplifier"); + + /* TWL4030 not connected pins */ + // snd_soc_dapm_nc_pin(codec, "OUTL"); + // snd_soc_dapm_nc_pin(codec, "OUTR"); + // snd_soc_dapm_nc_pin(codec, "EARPIECE"); + snd_soc_dapm_nc_pin(dapm, "PREDRIVEL"); + snd_soc_dapm_nc_pin(dapm, "PREDRIVER"); + // snd_soc_dapm_nc_pin(codec, "HSOL"); + // snd_soc_dapm_nc_pin(codec, "HSOR"); + snd_soc_dapm_nc_pin(dapm, "CARKITMIC"); + snd_soc_dapm_nc_pin(dapm, "CARKITL"); + snd_soc_dapm_nc_pin(dapm, "CARKITR"); + // snd_soc_dapm_nc_pin(codec, "HFL"); + // snd_soc_dapm_nc_pin(codec, "HFR"); + // snd_soc_dapm_nc_pin(codec, "VIBRA"); + // snd_soc_dapm_nc_pin(codec, "HSMIC"); + snd_soc_dapm_nc_pin(dapm, "DIGIMIC0"); + snd_soc_dapm_nc_pin(dapm, "DIGIMIC1"); + + return snd_soc_dapm_sync(dapm); +} + +static struct snd_soc_ops omap3gta04_ops = { + .hw_params = omap3gta04_hw_params, +}; + +/* Digital audio interface glue - connects codec <--> CPU */ +static struct snd_soc_dai_link omap3gta04_dai[] = { + { + .name = "TWL4030", + .stream_name = "TWL4030", + .cpu_dai_name = "omap-mcpdm-dai.0", + .codec_dai_name = "twl4030-hifi", + .ops = &omap3gta04_ops, + .init = &omap3gta04_init + } +}; + +/* Audio machine driver */ +static struct snd_soc_card snd_soc_omap3gta04 = { + .name = "gta04", +// .platform = &omap_soc_platform, + .dai_link = &omap3gta04_dai[0], + .num_links = ARRAY_SIZE(omap3gta04_dai), +}; + +/* Audio subsystem */ +/*static struct snd_soc_driver omap3gta04_snd_devdata = { + .card = &snd_soc_omap3gta04, + .codec_dev = &soc_codec_dev_twl4030, +};*/ + +static struct platform_device *omap3gta04_snd_device; + +static int __init omap3gta04_soc_init(void) +{ + int ret; + +/* if (!machine_is_gta04() && !machine_is_omap3_gta04()) { + pr_debug("Not GTA04!\n"); + return -ENODEV; + }*/ + pr_info("GTA04 OMAP3 SoC snd init\n"); + + // FIXME: set any GPIOs i.e. enable Audio in/out switch + // microphone power etc. + + omap3gta04_snd_device = platform_device_alloc("soc-audio", -1); + if (!omap3gta04_snd_device) { + printk(KERN_ERR "Platform device allocation failed\n"); + return -ENOMEM; + } + + platform_set_drvdata(omap3gta04_snd_device, &snd_soc_omap3gta04); +// omap3gta04_snd_devdata.dev = &omap3gta04_snd_device->dev; +// *(unsigned int *)omap3gta04_dai[0].cpu_dai->private_data = 1; /* McBSP2 = TPS65950 */ + ret = platform_device_add(omap3gta04_snd_device); + if (ret) + goto err1; + + return 0; + +err1: + printk(KERN_ERR "Unable to add platform device\n"); + platform_device_put(omap3gta04_snd_device); + + return ret; +} + +static void __exit omap3gta04_soc_exit(void) +{ + platform_device_unregister(omap3gta04_snd_device); + // switch off power +} + +module_init(omap3gta04_soc_init); +module_exit(omap3gta04_soc_exit); + +MODULE_AUTHOR("Steve Sakoman <steve@sakoman.com>"); +MODULE_DESCRIPTION("ALSA SoC OMAP3 GTA04"); +MODULE_LICENSE("GPL"); |