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linux-stable/sound/soc/ti/davinci-evm.c
Kuninori Morimoto 44e578150f
ASoC: ti: davinci-evm: consider CPU-Platform possibility 
commit f46da1b904 ("ASoC: ti: davinci-evm: don't select unnecessary
Platform")

Current ALSA SoC avoid to add duplicate component to rtd,
and this driver was selecting CPU component as Platform component.
Thus, above patch removed Platform settings from this driver,
because it assumed these are same component.

But, some CPU driver is using generic DMAEngine, in such case, both
CPU component and Platform component will have same of_node/name.
In other words, there are some components which are different but
have same of_node/name.

In such case, Card driver definitely need to select Platform even
though it is same as CPU.
It is depends on CPU driver, but is difficult to know it from Card driver.
This patch reverts above patch.

Fixes: commit f46da1b904 ("ASoC: ti: davinci-evm: don't select unnecessary Platform")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-06-28 15:18:55 +01:00

537 lines
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// 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");
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