[alsa-devel] Applied "ASoC: samsung: odroid: Add support for secondary CPU DAI" to the asoc tree
Mark Brown
broonie at kernel.org
Thu Feb 14 14:09:25 CET 2019
The patch
ASoC: samsung: odroid: Add support for secondary CPU DAI
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
>From bc3cf17b575a7a97b4af7ddcf86133175da7a582 Mon Sep 17 00:00:00 2001
From: Sylwester Nawrocki <s.nawrocki at samsung.com>
Date: Thu, 14 Feb 2019 10:37:40 +0100
Subject: [PATCH] ASoC: samsung: odroid: Add support for secondary CPU DAI
This patch adds DPCM links in order to support the secondary I2S interface.
For the secondary PCM interface to be actually available one more entry
should be added to the sound-dai property in sound/cpu node in DT.
The changes in driver are done in a way so we are backwards compatible
with existing DTS/DTB, i.e. if the cpu sound-dai property contains only
one entry only one PCM will be registered.
Signed-off-by: Sylwester Nawrocki <s.nawrocki at samsung.com>
Acked-by: Krzysztof Kozlowski <krzk at kernel.org>
Signed-off-by: Mark Brown <broonie at kernel.org>
---
sound/soc/samsung/odroid.c | 131 +++++++++++++++++++++++++++----------
1 file changed, 95 insertions(+), 36 deletions(-)
diff --git a/sound/soc/samsung/odroid.c b/sound/soc/samsung/odroid.c
index e7b371b07230..18bb3bfe0300 100644
--- a/sound/soc/samsung/odroid.c
+++ b/sound/soc/samsung/odroid.c
@@ -7,6 +7,7 @@
*/
#include <linux/clk.h>
+#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/module.h>
@@ -17,21 +18,24 @@
struct odroid_priv {
struct snd_soc_card card;
- struct snd_soc_dai_link dai_link;
-
struct clk *clk_i2s_bus;
struct clk *sclk_i2s;
};
-static int odroid_card_startup(struct snd_pcm_substream *substream)
+static int odroid_card_fe_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
+
return 0;
}
-static int odroid_card_hw_params(struct snd_pcm_substream *substream,
+static const struct snd_soc_ops odroid_card_fe_ops = {
+ .startup = odroid_card_fe_startup,
+};
+
+static int odroid_card_be_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -86,19 +90,55 @@ static int odroid_card_hw_params(struct snd_pcm_substream *substream,
return 0;
}
-static const struct snd_soc_ops odroid_card_ops = {
- .startup = odroid_card_startup,
- .hw_params = odroid_card_hw_params,
+static const struct snd_soc_ops odroid_card_be_ops = {
+ .hw_params = odroid_card_be_hw_params,
+};
+
+static struct snd_soc_dai_link odroid_card_dais[] = {
+ {
+ /* Primary FE <-> BE link */
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .ops = &odroid_card_fe_ops,
+ .name = "Primary",
+ .stream_name = "Primary",
+ .platform_name = "3830000.i2s",
+ .dynamic = 1,
+ .dpcm_playback = 1,
+ }, {
+ /* BE <-> CODECs link */
+ .name = "I2S Mixer",
+ .cpu_name = "snd-soc-dummy",
+ .cpu_dai_name = "snd-soc-dummy-dai",
+ .platform_name = "snd-soc-dummy",
+ .ops = &odroid_card_be_ops,
+ .no_pcm = 1,
+ .dpcm_playback = 1,
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ }, {
+ /* Secondary FE <-> BE link */
+ .playback_only = 1,
+ .codec_name = "snd-soc-dummy",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .ops = &odroid_card_fe_ops,
+ .name = "Secondary",
+ .stream_name = "Secondary",
+ .platform_name = "samsung-i2s-sec",
+ .dynamic = 1,
+ .dpcm_playback = 1,
+ }
};
static int odroid_audio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct device_node *cpu, *codec;
+ struct device_node *cpu, *cpu_dai, *codec;
struct odroid_priv *priv;
- struct snd_soc_dai_link *link;
struct snd_soc_card *card;
- int ret;
+ struct snd_soc_dai_link *link, *codec_link;
+ int num_pcms, ret, i;
+ struct of_phandle_args args = {};
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -130,45 +170,67 @@ static int odroid_audio_probe(struct platform_device *pdev)
return ret;
}
- link = &priv->dai_link;
-
- link->ops = &odroid_card_ops;
- link->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBS_CFS;
-
- card->dai_link = &priv->dai_link;
- card->num_links = 1;
+ card->dai_link = odroid_card_dais;
+ card->num_links = ARRAY_SIZE(odroid_card_dais);
cpu = of_get_child_by_name(dev->of_node, "cpu");
codec = of_get_child_by_name(dev->of_node, "codec");
+ link = card->dai_link;
+ codec_link = &card->dai_link[1];
- link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
- if (!link->cpu_of_node) {
- dev_err(dev, "Failed parsing cpu/sound-dai property\n");
- return -EINVAL;
+ /*
+ * For backwards compatibility create the secondary CPU DAI link only
+ * if there are 2 CPU DAI entries in the cpu sound-dai property in DT.
+ */
+ num_pcms = of_count_phandle_with_args(cpu, "sound-dai",
+ "#sound-dai-cells");
+ if (num_pcms == 1)
+ card->num_links--;
+
+ for (i = 0; i < num_pcms; i++, link += 2) {
+ ret = of_parse_phandle_with_args(cpu, "sound-dai",
+ "#sound-dai-cells", i, &args);
+ if (ret < 0)
+ return ret;
+
+ if (!args.np) {
+ dev_err(dev, "sound-dai property parse error: %d\n", ret);
+ return -EINVAL;
+ }
+
+ ret = snd_soc_get_dai_name(&args, &link->cpu_dai_name);
+ of_node_put(args.np);
+
+ if (ret < 0)
+ return ret;
}
- ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
+ cpu_dai = of_parse_phandle(cpu, "sound-dai", 0);
+ of_node_put(cpu);
+ of_node_put(codec);
+
+ ret = snd_soc_of_get_dai_link_codecs(dev, codec, codec_link);
if (ret < 0)
goto err_put_codec_n;
- link->platform_of_node = link->cpu_of_node;
-
- link->name = "Primary";
- link->stream_name = link->name;
-
+ /* Set capture capability only for boards with the MAX98090 CODEC */
+ if (codec_link->num_codecs > 1) {
+ card->dai_link[0].dpcm_capture = 1;
+ card->dai_link[1].dpcm_capture = 1;
+ }
- priv->sclk_i2s = of_clk_get_by_name(link->cpu_of_node, "i2s_opclk1");
+ priv->sclk_i2s = of_clk_get_by_name(cpu_dai, "i2s_opclk1");
if (IS_ERR(priv->sclk_i2s)) {
ret = PTR_ERR(priv->sclk_i2s);
- goto err_put_i2s_n;
+ goto err_put_codec_n;
}
- priv->clk_i2s_bus = of_clk_get_by_name(link->cpu_of_node, "iis");
+ priv->clk_i2s_bus = of_clk_get_by_name(cpu_dai, "iis");
if (IS_ERR(priv->clk_i2s_bus)) {
ret = PTR_ERR(priv->clk_i2s_bus);
goto err_put_sclk;
}
+ of_node_put(cpu_dai);
ret = devm_snd_soc_register_card(dev, card);
if (ret < 0) {
@@ -182,10 +244,8 @@ static int odroid_audio_probe(struct platform_device *pdev)
clk_put(priv->clk_i2s_bus);
err_put_sclk:
clk_put(priv->sclk_i2s);
-err_put_i2s_n:
- of_node_put(link->cpu_of_node);
err_put_codec_n:
- snd_soc_of_put_dai_link_codecs(link);
+ snd_soc_of_put_dai_link_codecs(codec_link);
return ret;
}
@@ -193,8 +253,7 @@ static int odroid_audio_remove(struct platform_device *pdev)
{
struct odroid_priv *priv = platform_get_drvdata(pdev);
- of_node_put(priv->dai_link.cpu_of_node);
- snd_soc_of_put_dai_link_codecs(&priv->dai_link);
+ snd_soc_of_put_dai_link_codecs(&priv->card.dai_link[1]);
clk_put(priv->sclk_i2s);
clk_put(priv->clk_i2s_bus);
--
2.20.1
More information about the Alsa-devel
mailing list