Re: [PATCH 2/2] ASoC: fsl-asoc-card: Add MQS support
From: Nicolin Chen <nicoleotsuka@gmail.com>
Date: 2020-06-17 00:49:07
Also in:
alsa-devel, linux-devicetree, lkml
On Tue, Jun 16, 2020 at 03:30:37PM +0800, Shengjiu Wang wrote:
The MQS codec isn't an i2c device, so add a new platform device for it. MQS only support playback, so add a new audio map. Add there maybe "model" property or no "audio-routing" property insertions
"Add" => "And"
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devicetree, so add some enhancement for these two property. Signed-off-by: Shengjiu Wang <redacted> --- sound/soc/fsl/fsl-asoc-card.c | 70 ++++++++++++++++++++++++++--------- 1 file changed, 52 insertions(+), 18 deletions(-)diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c index 00be73900888..2ac8cb9ddd10 100644 --- a/sound/soc/fsl/fsl-asoc-card.c +++ b/sound/soc/fsl/fsl-asoc-card.c
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@@ -482,6 +489,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) { struct device_node *cpu_np, *codec_np, *asrc_np; struct device_node *np = pdev->dev.of_node; + struct platform_device *codec_pdev = NULL; /* used for non i2c device*/
Having both codec_pdev and codec_dev duplicates things. Actually only a couple of places really need "codec_dev" -- most of them need codec_dev->dev pointer instead. So we could have a cleanup: - struct i2c_client *codec_dev; + struct device *codec_dev = NULL;
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@@ -512,10 +520,13 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) } codec_np = of_parse_phandle(np, "audio-codec", 0); - if (codec_np) + if (codec_np) { codec_dev = of_find_i2c_device_by_node(codec_np); - else + if (!codec_dev) + codec_pdev = of_find_device_by_node(codec_np); + } else { codec_dev = NULL; + }
Here can have something like (feel free to simplify):
if (codec_np) {
struct platform_device *codec_pdev;
struct i2c_client *codec_i2c;
codec_i2c = of_find_i2c_device_by_node(codec_np);
if (codec_i2c)
codec_dev = &codec_i2c->dev;
if (!codec_dev) {
codec_pdev = of_find_device_by_node(codec_np);
codec_dev = &codec_pdev->dev;
}
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asrc_np = of_parse_phandle(np, "audio-asrc", 0); if (asrc_np)@@ -525,6 +536,13 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) if (codec_dev) { struct clk *codec_clk = clk_get(&codec_dev->dev, NULL);
Then here: - struct clk *codec_clk = clk_get(&codec_dev->dev, NULL); + struct clk *codec_clk = clk_get(codec_dev, NULL);
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@@ -538,6 +556,11 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) /* Assign a default DAI format, and allow each card to overwrite it */ priv->dai_fmt = DAI_FMT_BASE; + memcpy(priv->dai_link, fsl_asoc_card_dai, + sizeof(struct snd_soc_dai_link) * ARRAY_SIZE(priv->dai_link));
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@@ -573,13 +596,25 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) codec_dai_name = "ac97-hifi"; priv->card.set_bias_level = NULL; priv->dai_fmt = SND_SOC_DAIFMT_AC97; + priv->card.dapm_routes = audio_map_ac97; + priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_ac97); + } else if (of_device_is_compatible(np, "fsl,imx-audio-mqs")) { + codec_dai_name = "fsl-mqs-dai"; + priv->card.set_bias_level = NULL; + priv->dai_fmt = SND_SOC_DAIFMT_LEFT_J | + SND_SOC_DAIFMT_CBS_CFS | + SND_SOC_DAIFMT_NB_NF; + priv->dai_link[1].dpcm_playback = 1; + priv->dai_link[2].dpcm_playback = 1;
dpcm_playback = 1? That's the default value in fsl_asoc_card_dai.
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@@ -601,19 +636,18 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1; } - snprintf(priv->name, sizeof(priv->name), "%s-audio", - fsl_asoc_card_is_ac97(priv) ? "ac97" : - codec_dev->name); - /* Initialize sound card */ priv->pdev = pdev; priv->card.dev = &pdev->dev; - priv->card.name = priv->name; + ret = snd_soc_of_parse_card_name(&priv->card, "model"); + if (ret) { + snprintf(priv->name, sizeof(priv->name), "%s-audio", + fsl_asoc_card_is_ac97(priv) ? "ac97" : + (codec_dev ? codec_dev->name : codec_pdev->name));
We can just use dev_name() if codec_dev is struct device * Or having a codec_dev_name to cache codec_pdev/i2c->name.
- ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
- if (ret) {
- dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
- goto asrc_fail;
+ if (of_property_read_bool(np, "audio-routing")) {
+ ret = snd_soc_of_parse_audio_routing(&priv->card, "audio-routing");
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
+ goto asrc_fail;Hmm...audio-routing is a required property in DT binding doc. So you might need to update that too.