- 根目录:
- sound
- soc
- omap
- omap-abe-twl6040.c
/*
* omap-abe-twl6040.c -- SoC audio for TI OMAP based boards with ABE and
* twl6040 codec
*
* Author: Misael Lopez Cruz <misael.lopez@ti.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 <linux/mfd/twl6040.h>
#include <linux/module.h>
#include <linux/of.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "omap-dmic.h"
#include "omap-mcpdm.h"
#include "../codecs/twl6040.h"
struct abe_twl6040 {
int jack_detection; /* board can detect jack events */
int mclk_freq; /* MCLK frequency speed for twl6040 */
struct platform_device *dmic_codec_dev;
};
static int omap_abe_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_codec *codec = rtd->codec;
struct snd_soc_card *card = codec->card;
struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
int clk_id, freq;
int ret;
clk_id = twl6040_get_clk_id(rtd->codec);
if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
freq = priv->mclk_freq;
else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
freq = 32768;
else
return -EINVAL;
/* set the codec mclk */
ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
SND_SOC_CLOCK_IN);
if (ret) {
printk(KERN_ERR "can't set codec system clock\n");
return ret;
}
return ret;
}
static struct snd_soc_ops omap_abe_ops = {
.hw_params = omap_abe_hw_params,
};
static int omap_abe_dmic_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 *cpu_dai = rtd->cpu_dai;
int ret = 0;
ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
19200000, SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "can't set DMIC cpu system clock\n");
return ret;
}
ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
SND_SOC_CLOCK_OUT);
if (ret < 0) {
printk(KERN_ERR "can't set DMIC output clock\n");
return ret;
}
return 0;
}
static struct snd_soc_ops omap_abe_dmic_ops = {
.hw_params = omap_abe_dmic_hw_params,
};
/* Headset jack */
static struct snd_soc_jack hs_jack;
/*Headset jack detection DAPM pins */
static struct snd_soc_jack_pin hs_jack_pins[] = {
{
.pin = "Headset Mic",
.mask = SND_JACK_MICROPHONE,
},
{
.pin = "Headset Stereophone",
.mask = SND_JACK_HEADPHONE,
},
};
/* SDP4430 machine DAPM */
static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
/* Outputs */
SND_SOC_DAPM_HP("Headset Stereophone", NULL),
SND_SOC_DAPM_SPK("Earphone Spk", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_LINE("Line Out", NULL),
SND_SOC_DAPM_SPK("Vibrator", NULL),
/* Inputs */
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
/* Digital microphones */
SND_SOC_DAPM_MIC("Digital Mic", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
/* Routings for outputs */
{"Headset Stereophone", NULL, "HSOL"},
{"Headset Stereophone", NULL, "HSOR"},
{"Earphone Spk", NULL, "EP"},
{"Ext Spk", NULL, "HFL"},
{"Ext Spk", NULL, "HFR"},
{"Line Out", NULL, "AUXL"},
{"Line Out", NULL, "AUXR"},
{"Vibrator", NULL, "VIBRAL"},
{"Vibrator", NULL, "VIBRAR"},
/* Routings for inputs */
{"HSMIC", NULL, "Headset Mic"},
{"Headset Mic", NULL, "Headset Mic Bias"},
{"MAINMIC", NULL, "Main Handset Mic"},
{"Main Handset Mic", NULL, "Main Mic Bias"},
{"SUBMIC", NULL, "Sub Handset Mic"},
{"Sub Handset Mic", NULL, "Main Mic Bias"},
{"AFML", NULL, "Line In"},
{"AFMR", NULL, "Line In"},
};
static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_card *card = codec->card;
struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
int hs_trim;
int ret = 0;
/*
* Configure McPDM offset cancellation based on the HSOTRIM value from
* twl6040.
*/
hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
TWL6040_HSF_TRIM_RIGHT(hs_trim));
/* Headset jack detection only if it is supported */
if (priv->jack_detection) {
ret = snd_soc_jack_new(codec, "Headset Jack",
SND_JACK_HEADSET, &hs_jack);
if (ret)
return ret;
ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
hs_jack_pins);
twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
}
return ret;
}
static const struct snd_soc_dapm_route dmic_audio_map[] = {
{"DMic", NULL, "Digital Mic"},
{"Digital Mic", NULL, "Digital Mic1 Bias"},
};
static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
ARRAY_SIZE(dmic_audio_map));
}
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
{
.name = "TWL6040",
.stream_name = "TWL6040",
.cpu_dai_name = "omap-mcpdm",
.codec_dai_name = "twl6040-legacy",
.platform_name = "omap-pcm-audio",
.codec_name = "twl6040-codec",
.init = omap_abe_twl6040_init,
.ops = &omap_abe_ops,
},
{
.name = "DMIC",
.stream_name = "DMIC Capture",
.cpu_dai_name = "omap-dmic",
.codec_dai_name = "dmic-hifi",
.platform_name = "omap-pcm-audio",
.codec_name = "dmic-codec",
.init = omap_abe_dmic_init,
.ops = &omap_abe_dmic_ops,
},
};
/* Audio machine driver */
static struct snd_soc_card omap_abe_card = {
.owner = THIS_MODULE,
.dapm_widgets = twl6040_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static int omap_abe_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
struct snd_soc_card *card = &omap_abe_card;
struct device_node *dai_node;
struct abe_twl6040 *priv;
int num_links = 0;
int ret = 0;
if (!node) {
dev_err(&pdev->dev, "of node is missing.\n");
return -ENODEV;
}
card->dev = &pdev->dev;
priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
priv->dmic_codec_dev = ERR_PTR(-EINVAL);
if (snd_soc_of_parse_card_name(card, "ti,model")) {
dev_err(&pdev->dev, "Card name is not provided\n");
return -ENODEV;
}
ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
if (ret) {
dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
return ret;
}
dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
if (!dai_node) {
dev_err(&pdev->dev, "McPDM node is not provided\n");
return -EINVAL;
}
abe_twl6040_dai_links[0].cpu_dai_name = NULL;
abe_twl6040_dai_links[0].cpu_of_node = dai_node;
dai_node = of_parse_phandle(node, "ti,dmic", 0);
if (dai_node) {
num_links = 2;
abe_twl6040_dai_links[1].cpu_dai_name = NULL;
abe_twl6040_dai_links[1].cpu_of_node = dai_node;
priv->dmic_codec_dev = platform_device_register_simple(
"dmic-codec", -1, NULL, 0);
if (IS_ERR(priv->dmic_codec_dev)) {
dev_err(&pdev->dev, "Can't instantiate dmic-codec\n");
return PTR_ERR(priv->dmic_codec_dev);
}
} else {
num_links = 1;
}
priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
if (!priv->mclk_freq) {
dev_err(&pdev->dev, "MCLK frequency not provided\n");
ret = -EINVAL;
goto err_unregister;
}
card->fully_routed = 1;
if (!priv->mclk_freq) {
dev_err(&pdev->dev, "MCLK frequency missing\n");
ret = -ENODEV;
goto err_unregister;
}
card->dai_link = abe_twl6040_dai_links;
card->num_links = num_links;
snd_soc_card_set_drvdata(card, priv);
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
goto err_unregister;
}
return 0;
err_unregister:
if (!IS_ERR(priv->dmic_codec_dev))
platform_device_unregister(priv->dmic_codec_dev);
return ret;
}
static int omap_abe_remove(struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
snd_soc_unregister_card(card);
if (!IS_ERR(priv->dmic_codec_dev))
platform_device_unregister(priv->dmic_codec_dev);
return 0;
}
static const struct of_device_id omap_abe_of_match[] = {
{.compatible = "ti,abe-twl6040", },
{ },
};
MODULE_DEVICE_TABLE(of, omap_abe_of_match);
static struct platform_driver omap_abe_driver = {
.driver = {
.name = "omap-abe-twl6040",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
.of_match_table = omap_abe_of_match,
},
.probe = omap_abe_probe,
.remove = omap_abe_remove,
};
module_platform_driver(omap_abe_driver);
MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:omap-abe-twl6040");