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Subject[PATCH v5 6/9] ASoC: rockchip: Parse dai links from dts
Date
Refactor rockchip_sound_probe, parse dai links from dts instead of
hard coding them.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
---

Changes in v5: None
Changes in v4: None
Changes in v3:
Use compatible to match audio codecs
-- Suggested-by Matthias Kaehlcke <mka@chromium.org>

Changes in v2:
Let rockchip,codec-names be a required property, because we plan to
add more supported codecs to the fixed dai link list in the driver.

sound/soc/rockchip/rk3399_gru_sound.c | 139 ++++++++++++++++++++++------------
1 file changed, 91 insertions(+), 48 deletions(-)

diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
index 9b7e28703bfb..d532336871d7 100644
--- a/sound/soc/rockchip/rk3399_gru_sound.c
+++ b/sound/soc/rockchip/rk3399_gru_sound.c
@@ -235,14 +235,42 @@ static const struct snd_soc_ops rockchip_sound_da7219_ops = {
.hw_params = rockchip_sound_da7219_hw_params,
};

+static struct snd_soc_card rockchip_sound_card = {
+ .name = "rk3399-gru-sound",
+ .owner = THIS_MODULE,
+ .dapm_widgets = rockchip_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(rockchip_dapm_widgets),
+ .dapm_routes = rockchip_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(rockchip_dapm_routes),
+ .controls = rockchip_controls,
+ .num_controls = ARRAY_SIZE(rockchip_controls),
+};
+
enum {
+ DAILINK_DA7219,
DAILINK_MAX98357A,
DAILINK_RT5514,
- DAILINK_DA7219,
DAILINK_RT5514_DSP,
};

-static struct snd_soc_dai_link rockchip_dailinks[] = {
+static const char * const dailink_compat[] = {
+ [DAILINK_DA7219] = "dlg,da7219",
+ [DAILINK_MAX98357A] = "maxim,max98357a",
+ [DAILINK_RT5514] = "realtek,rt5514-i2c",
+ [DAILINK_RT5514_DSP] = "realtek,rt5514-spi",
+};
+
+static const struct snd_soc_dai_link rockchip_dais[] = {
+ [DAILINK_DA7219] = {
+ .name = "DA7219",
+ .stream_name = "DA7219 PCM",
+ .codec_dai_name = "da7219-hifi",
+ .init = rockchip_sound_da7219_init,
+ .ops = &rockchip_sound_da7219_ops,
+ /* set da7219 as slave */
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ },
[DAILINK_MAX98357A] = {
.name = "MAX98357A",
.stream_name = "MAX98357A PCM",
@@ -261,16 +289,6 @@ static struct snd_soc_dai_link rockchip_dailinks[] = {
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
},
- [DAILINK_DA7219] = {
- .name = "DA7219",
- .stream_name = "DA7219 PCM",
- .codec_dai_name = "da7219-hifi",
- .init = rockchip_sound_da7219_init,
- .ops = &rockchip_sound_da7219_ops,
- /* set da7219 as slave */
- .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBS_CFS,
- },
/* RT5514 DSP for voice wakeup via spi bus */
[DAILINK_RT5514_DSP] = {
.name = "RT5514 DSP",
@@ -279,53 +297,78 @@ static struct snd_soc_dai_link rockchip_dailinks[] = {
},
};

-static struct snd_soc_card rockchip_sound_card = {
- .name = "rk3399-gru-sound",
- .owner = THIS_MODULE,
- .dai_link = rockchip_dailinks,
- .num_links = ARRAY_SIZE(rockchip_dailinks),
- .dapm_widgets = rockchip_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(rockchip_dapm_widgets),
- .dapm_routes = rockchip_dapm_routes,
- .num_dapm_routes = ARRAY_SIZE(rockchip_dapm_routes),
- .controls = rockchip_controls,
- .num_controls = ARRAY_SIZE(rockchip_controls),
-};
-
-static int rockchip_sound_probe(struct platform_device *pdev)
+static int rockchip_sound_codec_node_match(struct device_node *np_codec)
{
- struct snd_soc_card *card = &rockchip_sound_card;
- struct device_node *cpu_node;
- int i, ret;
+ int i;

- cpu_node = of_parse_phandle(pdev->dev.of_node, "rockchip,cpu", 0);
- if (!cpu_node) {
- dev_err(&pdev->dev, "Property 'rockchip,cpu' missing or invalid\n");
- return -EINVAL;
+ for (i = 0; i < ARRAY_SIZE(dailink_compat); i++) {
+ if (of_device_is_compatible(np_codec, dailink_compat[i]))
+ return i;
}
+ return -1;
+}

- for (i = 0; i < ARRAY_SIZE(rockchip_dailinks); i++) {
- rockchip_dailinks[i].platform_of_node = cpu_node;
- rockchip_dailinks[i].cpu_of_node = cpu_node;
-
- rockchip_dailinks[i].codec_of_node =
- of_parse_phandle(pdev->dev.of_node, "rockchip,codec", i);
- if (!rockchip_dailinks[i].codec_of_node) {
- dev_err(&pdev->dev,
- "Property[%d] 'rockchip,codec' missing or invalid\n", i);
+static int rockchip_sound_of_parse_dais(struct device *dev,
+ struct snd_soc_card *card)
+{
+ struct device_node *np_cpu;
+ struct device_node *np_codec;
+ struct snd_soc_dai_link *dai;
+ int i, index;
+
+ card->dai_link = devm_kzalloc(dev, sizeof(rockchip_dais),
+ GFP_KERNEL);
+ if (!card->dai_link)
+ return -ENOMEM;
+
+ np_cpu = of_parse_phandle(dev->of_node, "rockchip,cpu", 0);
+
+ card->num_links = 0;
+ for (i = 0; i < ARRAY_SIZE(rockchip_dais); i++) {
+ np_codec = of_parse_phandle(dev->of_node,
+ "rockchip,codec", i);
+ if (!np_codec)
+ break;
+
+ if (!of_device_is_available(np_codec))
+ continue;
+
+ index = rockchip_sound_codec_node_match(np_codec);
+ if (index < 0)
+ continue;
+
+ if (!np_cpu) {
+ dev_err(dev, "Missing 'rockchip,cpu' for %s\n",
+ rockchip_dais[index].name);
return -EINVAL;
}
+
+ dai = &card->dai_link[card->num_links++];
+ *dai = rockchip_dais[index];
+
+ dai->codec_of_node = np_codec;
+ dai->platform_of_node = np_cpu;
+ dai->cpu_of_node = np_cpu;
+ }
+
+ return 0;
+}
+
+static int rockchip_sound_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &rockchip_sound_card;
+ int ret;
+
+ ret = rockchip_sound_of_parse_dais(&pdev->dev, card);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to parse dais: %d\n", ret);
+ return ret;
}

card->dev = &pdev->dev;
platform_set_drvdata(pdev, card);

- ret = devm_snd_soc_register_card(&pdev->dev, card);
- if (ret)
- dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
- __func__, ret);
-
- return ret;
+ return devm_snd_soc_register_card(&pdev->dev, card);
}

static const struct of_device_id rockchip_sound_of_match[] = {
--
2.11.0

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