// SPDX-License-Identifier: GPL-2.0-only
/*
* ASoC driver for TI DAVINCI EVM platform
*
* Author: Vladimir Barinov, <vbarinov@embeddedalley.com>
* Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com>
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/of_platform.h>
#include <linux/clk.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/dma.h>
#include <asm/mach-types.h>
struct snd_soc_card_drvdata_davinci {
struct clk *mclk;
unsigned sysclk;
};
static int evm_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_card *soc_card = rtd->card;
struct snd_soc_card_drvdata_davinci *drvdata =
snd_soc_card_get_drvdata(soc_card);
if (drvdata->mclk)
return clk_prepare_enable(drvdata->mclk);
return 0;
}
static void evm_shutdown(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_card *soc_card = rtd->card;
struct snd_soc_card_drvdata_davinci *drvdata =
snd_soc_card_get_drvdata(soc_card);
if (drvdata->mclk)
clk_disable_unprepare(drvdata->mclk);
}
static int evm_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;
struct snd_soc_card *soc_card = rtd->card;
int ret = 0;
unsigned sysclk = ((struct snd_soc_card_drvdata_davinci *)
snd_soc_card_get_drvdata(soc_card))->sysclk;
/* set the codec system clock */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
/* set the CPU system clock */
ret = snd_soc_dai_set_sysclk(cpu_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
return 0;
}
static struct snd_soc_ops evm_ops = {
.startup = evm_startup,
.shutdown = evm_shutdown,
.hw_params = evm_hw_params,
};
/* davinci-evm machine dapm widgets */
static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_LINE("Line Out", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_LINE("Line In", NULL),
};
/* davinci-evm machine audio_mapnections to the codec pins */
static const struct snd_soc_dapm_route audio_map[] = {
/* Headphone connected to HPLOUT, HPROUT */
{"Headphone Jack", NULL, "HPLOUT"},
{"Headphone Jack", NULL, "HPROUT"},
/* Line Out connected to LLOUT, RLOUT */
{"Line Out", NULL, "LLOUT"},
{"Line Out", NULL, "RLOUT"},
/* Mic connected to (MIC3L | MIC3R) */
{"MIC3L", NULL, "Mic Bias"},
{"MIC3R", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Mic Jack"},
/* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
{"LINE1L", NULL, "Line In"},
{"LINE2L", NULL, "Line In"},
{"LINE1R", NULL, "Line In"},
{"LINE2R", NULL, "Line In"},
};
/* Logic for a aic3x as connected on a davinci-evm */
static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
struct device_node *np = card->dev->of_node;
int ret;
/* Add davinci-evm specific widgets */
snd_soc_dapm_new_controls(&card->dapm, aic3x_dapm_widgets,
ARRAY_SIZE(aic3x_dapm_widgets));
if (np) {
ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
if (ret)
return ret;
} else {
/* Set up davinci-evm specific audio path audio_map */
snd_soc_dapm_add_routes(&card->dapm, audio_map,
ARRAY_SIZE(audio_map));
}
/* not connected */
snd_soc_dapm_nc_pin(&card->dapm, "MONO_LOUT");
snd_soc_dapm_nc_pin(&card->dapm, "HPLCOM");
snd_soc_dapm_nc_pin(&card->dapm, "HPRCOM");
return 0;
}
/* davinci-evm digital audio interface glue - connects codec <--> CPU */
SND_SOC_DAILINK_DEFS(dm6446,
DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")),
DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b",
"tlv320aic3x-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp")));
static struct snd_soc_dai_link dm6446_evm_dai = {
.name = "TLV320AIC3X",
.stream_name = "AIC3X",
.init = evm_aic3x_init,
.ops = &evm_ops,
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
SND_SOC_DAIFMT_IB_NF,
SND_SOC_DAILINK_REG(dm6446),
};
SND_SOC_DAILINK_DEFS(dm355,
DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp.1")),
DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-001b",
"tlv320aic3x-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp.1")));
static struct snd_soc_dai_link dm355_evm_dai = {
.name = "TLV320AIC3X",
.stream_name = "AIC3X",
.init = evm_aic3x_init,
.ops = &evm_ops,
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
SND_SOC_DAIFMT_IB_NF,
SND_SOC_DAILINK_REG(dm355),
};
#ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC
SND_SOC_DAILINK_DEFS(dm365,
DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcbsp")),
DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
"tlv320aic3x-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcbsp")));
#elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC)
SND_SOC_DAILINK_DEFS(dm365,
DAILINK_COMP_ARRAY(COMP_CPU("davinci-vcif")),
DAILINK_COMP_ARRAY(COMP_CODEC("cq93vc-codec", "cq93vc-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-vcif")));
#endif
static struct snd_soc_dai_link dm365_evm_dai = {
#ifdef CONFIG_SND_SOC_DM365_AIC3X_CODEC
.name = "TLV320AIC3X",
.stream_name = "AIC3X",
.init = evm_aic3x_init,
.ops = &evm_ops,
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
SND_SOC_DAIFMT_IB_NF,
SND_SOC_DAILINK_REG(dm365),
#elif defined(CONFIG_SND_SOC_DM365_VOICE_CODEC)
.name = "Voice Codec - CQ93VC",
.stream_name = "CQ93",
SND_SOC_DAILINK_REG(dm365),
#endif
};
SND_SOC_DAILINK_DEFS(dm6467_aic3x,
DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")),
DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.0-001a",
"tlv320aic3x-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0")));
SND_SOC_DAILINK_DEFS(dm6467_spdif,
DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")),
DAILINK_COMP_ARRAY(COMP_CODEC("spdif_dit", "dit-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1")));
static struct snd_soc_dai_link dm6467_evm_dai[] = {
{
.name = "TLV320AIC3X",
.stream_name = "AIC3X",
.init = evm_aic3x_init,
.ops = &evm_ops,
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
SND_SOC_DAIFMT_IB_NF,
SND_SOC_DAILINK_REG(dm6467_aic3x),
},
{
.name = "McASP",
.stream_name = "spdif",
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
SND_SOC_DAIFMT_IB_NF,
SND_SOC_DAILINK_REG(dm6467_spdif),
},
};
SND_SOC_DAILINK_DEFS(da830,
DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.1")),
DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
"tlv320aic3x-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.1")));
static struct snd_soc_dai_link da830_evm_dai = {
.name = "TLV320AIC3X",
.stream_name = "AIC3X",
.init = evm_aic3x_init,
.ops = &evm_ops,
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
SND_SOC_DAIFMT_IB_NF,
SND_SOC_DAILINK_REG(da830),
};
SND_SOC_DAILINK_DEFS(da850,
DAILINK_COMP_ARRAY(COMP_CPU("davinci-mcasp.0")),
DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.1-0018",
"tlv320aic3x-hifi")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("davinci-mcasp.0")));
static struct snd_soc_dai_link da850_evm_dai = {
.name = "TLV320AIC3X",
.stream_name = "AIC3X",
.init = evm_aic3x_init,
.ops = &evm_ops,
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
SND_SOC_DAIFMT_IB_NF,
SND_SOC_DAILINK_REG(da850),
};
/* davinci dm6446 evm audio machine driver */
/*
* ASP0 in DM6446 EVM is clocked by U55, as configured by
* board-dm644x-evm.c using GPIOs from U18. There are six
* options; here we "know" we use a 48 KHz sample rate.
*/
static struct snd_soc_card_drvdata_davinci dm6446_snd_soc_card_drvdata = {
.sysclk = 12288000,
};
static struct snd_soc_card dm6446_snd_soc_card_evm = {
.name = "DaVinci DM6446 EVM",
.owner = THIS_MODULE,
.dai_link = &dm6446_evm_dai,
.num_links = 1,
.drvdata = &dm6446_snd_soc_card_drvdata,
};
/* davinci dm355 evm audio machine driver */
/* ASP1 on DM355 EVM is clocked by an external oscillator */
static struct snd_soc_card_drvdata_davinci dm355_snd_soc_card_drvdata = {
.sysclk = 27000000,
};
static struct snd_soc_card dm355_snd_soc_card_evm = {
.name = "DaVinci DM355 EVM",
.owner = THIS_MODULE,
.dai_link = &dm355_evm_dai,
.num_links = 1,
.drvdata = &dm355_snd_soc_card_drvdata,
};
/* davinci dm365 evm audio machine driver */
static struct snd_soc_card_drvdata_davinci dm365_snd_soc_card_drvdata = {
.sysclk = 27000000,
};
static struct snd_soc_card dm365_snd_soc_card_evm = {
.name = "DaVinci DM365 EVM",
.owner = THIS_MODULE,
.dai_link = &dm365_evm_dai,
.num_links = 1,
.drvdata = &dm365_snd_soc_card_drvdata,
};
/* davinci dm6467 evm audio machine driver */
static struct snd_soc_card_drvdata_davinci dm6467_snd_soc_card_drvdata = {
.sysclk = 27000000,
};
static struct snd_soc_card dm6467_snd_soc_card_evm = {
.name = "DaVinci DM6467 EVM",
.owner = THIS_MODULE,
.dai_link = dm6467_evm_dai,
.num_links = ARRAY_SIZE(dm6467_evm_dai),
.drvdata = &dm6467_snd_soc_card_drvdata,
};
static struct snd_soc_card_drvdata_davinci da830_snd_soc_card_drvdata = {
.sysclk = 24576000,
};
static struct snd_soc_card da830_snd_soc_card = {
.name = "DA830/OMAP-L137 EVM",
.owner = THIS_MODULE,
.dai_link = &da830_evm_dai,
.num_links = 1,
.drvdata = &da830_snd_soc_card_drvdata,
};
static struct snd_soc_card_drvdata_davinci da850_snd_soc_card_drvdata = {
.sysclk = 24576000,
};
static struct snd_soc_card da850_snd_soc_card = {
.name = "DA850/OMAP-L138 EVM",
.owner = THIS_MODULE,
.dai_link = &da850_evm_dai,
.num_links = 1,
.drvdata = &da850_snd_soc_card_drvdata,
};
#if defined(CONFIG_OF)
/*
* The struct is used as place holder. It will be completely
* filled with data from dt node.
*/
SND_SOC_DAILINK_DEFS(evm,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "tlv320aic3x-hifi")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link evm_dai_tlv320aic3x = {
.name = "TLV320AIC3X",
.stream_name = "AIC3X",
.ops = &evm_ops,
.init = evm_aic3x_init,
.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_CBM_CFM |
SND_SOC_DAIFMT_IB_NF,
SND_SOC_DAILINK_REG(evm),
};
static const struct of_device_id davinci_evm_dt_ids[] = {
{
.compatible = "ti,da830-evm-audio",
.data = (void *) &evm_dai_tlv320aic3x,
},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids);
/* davinci evm audio machine driver */
static struct snd_soc_card evm_soc_card = {
.owner = THIS_MODULE,
.num_links = 1,
};
static int davinci_evm_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *match;
struct snd_soc_dai_link *dai;
struct snd_soc_card_drvdata_davinci *drvdata = NULL;
struct clk *mclk;
int ret = 0;
match = of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev);
if (!match) {
dev_err(&pdev->dev, "Error: No device match found\n");
return -ENODEV;
}
dai = (struct snd_soc_dai_link *) match->data;
evm_soc_card.dai_link = dai;
dai->codecs->of_node = of_parse_phandle(np, "ti,audio-codec", 0);
if (!dai->codecs->of_node)
return -EINVAL;
dai->cpus->of_node = of_parse_phandle(np, "ti,mcasp-controller", 0);
if (!dai->cpus->of_node)
return -EINVAL;
dai->platforms->of_node = dai->cpus->of_node;
evm_soc_card.dev = &pdev->dev;
ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model");
if (ret)
return ret;
mclk = devm_clk_get(&pdev->dev, "mclk");
if (PTR_ERR(mclk) == -EPROBE_DEFER) {
return -EPROBE_DEFER;
} else if (IS_ERR(mclk)) {
dev_dbg(&pdev->dev, "mclk not found.\n");
mclk = NULL;
}
drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
drvdata->mclk = mclk;
ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk);
if (ret < 0) {
if (!drvdata->mclk) {
dev_err(&pdev->dev,
"No clock or clock rate defined.\n");
return -EINVAL;
}
drvdata->sysclk = clk_get_rate(drvdata->mclk);
} else if (drvdata->mclk) {
unsigned int requestd_rate = drvdata->sysclk;
clk_set_rate(drvdata->mclk, drvdata->sysclk);
drvdata->sysclk = clk_get_rate(drvdata->mclk);
if (drvdata->sysclk != requestd_rate)
dev_warn(&pdev->dev,
"Could not get requested rate %u using %u.\n",
requestd_rate, drvdata->sysclk);
}
snd_soc_card_set_drvdata(&evm_soc_card, drvdata);
ret = devm_snd_soc_register_card(&pdev->dev, &evm_soc_card);
if (ret)
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
return ret;
}
static struct platform_driver davinci_evm_driver = {
.probe = davinci_evm_probe,
.driver = {
.name = "davinci_evm",
.pm = &snd_soc_pm_ops,
.of_match_table = of_match_ptr(davinci_evm_dt_ids),
},
};
#endif
static struct platform_device *evm_snd_device;
static int __init evm_init(void)
{
struct snd_soc_card *evm_snd_dev_data;
int index;
int ret;
/*
* If dtb is there, the devices will be created dynamically.
* Only register platfrom driver structure.
*/
#if defined(CONFIG_OF)
if (of_have_populated_dt())
return platform_driver_register(&davinci_evm_driver);
#endif
if (machine_is_davinci_evm()) {
evm_snd_dev_data = &dm6446_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_dm355_evm()) {
evm_snd_dev_data = &dm355_snd_soc_card_evm;
index = 1;
} else if (machine_is_davinci_dm365_evm()) {
evm_snd_dev_data = &dm365_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_dm6467_evm()) {
evm_snd_dev_data = &dm6467_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_da830_evm()) {
evm_snd_dev_data = &da830_snd_soc_card;
index = 1;
} else if (machine_is_davinci_da850_evm()) {
evm_snd_dev_data = &da850_snd_soc_card;
index = 0;
} else
return -EINVAL;
evm_snd_device = platform_device_alloc("soc-audio", index);
if (!evm_snd_device)
return -ENOMEM;
platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
ret = platform_device_add(evm_snd_device);
if (ret)
platform_device_put(evm_snd_device);
return ret;
}
static void __exit evm_exit(void)
{
#if defined(CONFIG_OF)
if (of_have_populated_dt()) {
platform_driver_unregister(&davinci_evm_driver);
return;
}
#endif
platform_device_unregister(evm_snd_device);
}
module_init(evm_init);
module_exit(evm_exit);
MODULE_AUTHOR("Vladimir Barinov");
MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
MODULE_LICENSE("GPL");
