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Date: Wed, 8 Jul 2020 13:04:09 +0300
From: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
To: <alsa-devel@...a-project.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
CC: <lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
<tiwai@...e.com>, <nicolas.ferre@...rochip.com>,
<alexandre.belloni@...tlin.com>, <ludovic.desroches@...rochip.com>,
"Codrin Ciubotariu" <codrin.ciubotariu@...rochip.com>
Subject: [PATCH v2] ASoC: atmel-classd: remove codec component
The CPU and the codec both are represented now as components, so for
CLASS-D we are registering two componenets with the same name. Since
there is no actual codec, we will merge the codec component into the
CPU one and use a dummy codec instead, for the DAI link.
As a bonus, debugfs will no longer report an error when will try to
create entries for both componenets with the same name.
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
---
Changes in v2:
- removed no longer used ATMEL_CLASSD_CODEC_DAI_NAME macro;
sound/soc/atmel/atmel-classd.c | 134 ++++++++++++---------------------
1 file changed, 48 insertions(+), 86 deletions(-)
diff --git a/sound/soc/atmel/atmel-classd.c b/sound/soc/atmel/atmel-classd.c
index e98601eccfa3..24bc93c468af 100644
--- a/sound/soc/atmel/atmel-classd.c
+++ b/sound/soc/atmel/atmel-classd.c
@@ -5,7 +5,6 @@
*
* Author: Songjun Wu <songjun.wu@...el.com>
*/
-
#include <linux/of.h>
#include <linux/clk.h>
#include <linux/module.h>
@@ -120,39 +119,21 @@ static int atmel_classd_cpu_dai_startup(struct snd_pcm_substream *substream,
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct atmel_classd *dd = snd_soc_card_get_drvdata(rtd->card);
+ int err;
regmap_write(dd->regmap, CLASSD_THR, 0x0);
- return clk_prepare_enable(dd->pclk);
-}
-
-static void atmel_classd_cpu_dai_shutdown(struct snd_pcm_substream *substream,
- struct snd_soc_dai *cpu_dai)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct atmel_classd *dd = snd_soc_card_get_drvdata(rtd->card);
-
- clk_disable_unprepare(dd->pclk);
+ err = clk_prepare_enable(dd->pclk);
+ if (err)
+ return err;
+ err = clk_prepare_enable(dd->gclk);
+ if (err) {
+ clk_disable_unprepare(dd->pclk);
+ return err;
+ }
+ return 0;
}
-static const struct snd_soc_dai_ops atmel_classd_cpu_dai_ops = {
- .startup = atmel_classd_cpu_dai_startup,
- .shutdown = atmel_classd_cpu_dai_shutdown,
-};
-
-static struct snd_soc_dai_driver atmel_classd_cpu_dai = {
- .playback = {
- .channels_min = 1,
- .channels_max = 2,
- .rates = ATMEL_CLASSD_RATES,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,},
- .ops = &atmel_classd_cpu_dai_ops,
-};
-
-static const struct snd_soc_component_driver atmel_classd_cpu_dai_component = {
- .name = "atmel-classd",
-};
-
/* platform */
static int
atmel_classd_platform_configure_dma(struct snd_pcm_substream *substream,
@@ -306,31 +287,10 @@ static int atmel_classd_component_resume(struct snd_soc_component *component)
return regcache_sync(dd->regmap);
}
-static struct snd_soc_component_driver soc_component_dev_classd = {
- .probe = atmel_classd_component_probe,
- .resume = atmel_classd_component_resume,
- .controls = atmel_classd_snd_controls,
- .num_controls = ARRAY_SIZE(atmel_classd_snd_controls),
- .idle_bias_on = 1,
- .use_pmdown_time = 1,
- .endianness = 1,
- .non_legacy_dai_naming = 1,
-};
-
-/* codec dai component */
-static int atmel_classd_codec_dai_startup(struct snd_pcm_substream *substream,
- struct snd_soc_dai *codec_dai)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct atmel_classd *dd = snd_soc_card_get_drvdata(rtd->card);
-
- return clk_prepare_enable(dd->gclk);
-}
-
-static int atmel_classd_codec_dai_digital_mute(struct snd_soc_dai *codec_dai,
- int mute)
+static int atmel_classd_cpu_dai_digital_mute(struct snd_soc_dai *cpu_dai,
+ int mute)
{
- struct snd_soc_component *component = codec_dai->component;
+ struct snd_soc_component *component = cpu_dai->component;
u32 mask, val;
mask = CLASSD_MR_LMUTE_MASK | CLASSD_MR_RMUTE_MASK;
@@ -373,13 +333,13 @@ static struct {
};
static int
-atmel_classd_codec_dai_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *codec_dai)
+atmel_classd_cpu_dai_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *cpu_dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct atmel_classd *dd = snd_soc_card_get_drvdata(rtd->card);
- struct snd_soc_component *component = codec_dai->component;
+ struct snd_soc_component *component = cpu_dai->component;
int fs;
int i, best, best_val, cur_val, ret;
u32 mask, val;
@@ -417,8 +377,8 @@ atmel_classd_codec_dai_hw_params(struct snd_pcm_substream *substream,
}
static void
-atmel_classd_codec_dai_shutdown(struct snd_pcm_substream *substream,
- struct snd_soc_dai *codec_dai)
+atmel_classd_cpu_dai_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *cpu_dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct atmel_classd *dd = snd_soc_card_get_drvdata(rtd->card);
@@ -426,10 +386,10 @@ atmel_classd_codec_dai_shutdown(struct snd_pcm_substream *substream,
clk_disable_unprepare(dd->gclk);
}
-static int atmel_classd_codec_dai_prepare(struct snd_pcm_substream *substream,
- struct snd_soc_dai *codec_dai)
+static int atmel_classd_cpu_dai_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *cpu_dai)
{
- struct snd_soc_component *component = codec_dai->component;
+ struct snd_soc_component *component = cpu_dai->component;
snd_soc_component_update_bits(component, CLASSD_MR,
CLASSD_MR_LEN_MASK | CLASSD_MR_REN_MASK,
@@ -439,10 +399,10 @@ static int atmel_classd_codec_dai_prepare(struct snd_pcm_substream *substream,
return 0;
}
-static int atmel_classd_codec_dai_trigger(struct snd_pcm_substream *substream,
- int cmd, struct snd_soc_dai *codec_dai)
+static int atmel_classd_cpu_dai_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *cpu_dai)
{
- struct snd_soc_component *component = codec_dai->component;
+ struct snd_soc_component *component = cpu_dai->component;
u32 mask, val;
mask = CLASSD_MR_LEN_MASK | CLASSD_MR_REN_MASK;
@@ -468,19 +428,16 @@ static int atmel_classd_codec_dai_trigger(struct snd_pcm_substream *substream,
return 0;
}
-static const struct snd_soc_dai_ops atmel_classd_codec_dai_ops = {
- .digital_mute = atmel_classd_codec_dai_digital_mute,
- .startup = atmel_classd_codec_dai_startup,
- .shutdown = atmel_classd_codec_dai_shutdown,
- .hw_params = atmel_classd_codec_dai_hw_params,
- .prepare = atmel_classd_codec_dai_prepare,
- .trigger = atmel_classd_codec_dai_trigger,
+static const struct snd_soc_dai_ops atmel_classd_cpu_dai_ops = {
+ .startup = atmel_classd_cpu_dai_startup,
+ .shutdown = atmel_classd_cpu_dai_shutdown,
+ .digital_mute = atmel_classd_cpu_dai_digital_mute,
+ .hw_params = atmel_classd_cpu_dai_hw_params,
+ .prepare = atmel_classd_cpu_dai_prepare,
+ .trigger = atmel_classd_cpu_dai_trigger,
};
-#define ATMEL_CLASSD_CODEC_DAI_NAME "atmel-classd-hifi"
-
-static struct snd_soc_dai_driver atmel_classd_codec_dai = {
- .name = ATMEL_CLASSD_CODEC_DAI_NAME,
+static struct snd_soc_dai_driver atmel_classd_cpu_dai = {
.playback = {
.stream_name = "Playback",
.channels_min = 1,
@@ -488,7 +445,18 @@ static struct snd_soc_dai_driver atmel_classd_codec_dai = {
.rates = ATMEL_CLASSD_RATES,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
- .ops = &atmel_classd_codec_dai_ops,
+ .ops = &atmel_classd_cpu_dai_ops,
+};
+
+static const struct snd_soc_component_driver atmel_classd_cpu_dai_component = {
+ .name = "atmel-classd",
+ .probe = atmel_classd_component_probe,
+ .resume = atmel_classd_component_resume,
+ .controls = atmel_classd_snd_controls,
+ .num_controls = ARRAY_SIZE(atmel_classd_snd_controls),
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
};
/* ASoC sound card */
@@ -517,9 +485,10 @@ static int atmel_classd_asoc_card_init(struct device *dev,
dai_link->name = "CLASSD";
dai_link->stream_name = "CLASSD PCM";
- dai_link->codecs->dai_name = ATMEL_CLASSD_CODEC_DAI_NAME;
+ dai_link->codecs->dai_name = "snd-soc-dummy-dai";
+
dai_link->cpus->dai_name = dev_name(dev);
- dai_link->codecs->name = dev_name(dev);
+ dai_link->codecs->name = "snd-soc-dummy";
dai_link->platforms->name = dev_name(dev);
card->dai_link = dai_link;
@@ -620,13 +589,6 @@ static int atmel_classd_probe(struct platform_device *pdev)
return ret;
}
- ret = devm_snd_soc_register_component(dev, &soc_component_dev_classd,
- &atmel_classd_codec_dai, 1);
- if (ret) {
- dev_err(dev, "could not register component: %d\n", ret);
- return ret;
- }
-
/* register sound card */
card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
if (!card) {
--
2.25.1
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