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ASoC: samsung: i2s: Restore support for the secondary PCM

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This patch introduces again registration of additional platform device as
we still need it for registering the secondary dmaengine PCM component.

This patch in most part is a revert of changes done in commit
be2c92eb64 ("ASoC: samsung: i2s: Remove virtual device for secondary DAI")

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sylwester Nawrocki 2019-02-12 19:03:22 +01:00 committed by Mark Brown
parent b3d8f7cad1
commit 7196c64c7d
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GPG Key ID: 24D68B725D5487D0
1 changed files with 48 additions and 4 deletions
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52
sound/soc/samsung/i2s.c
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@ -109,6 +109,7 @@ static DEFINE_SPINLOCK(lock);
struct samsung_i2s_priv {
struct platform_device *pdev;
struct platform_device *pdev_sec;
/* Spinlock protecting access to the device's registers */
spinlock_t spinlock;
@ -1306,6 +1307,34 @@ static int i2s_register_clock_provider(struct platform_device *pdev)
return ret;
}
/* Create platform device for the secondary PCM */
static int i2s_create_secondary_device(struct samsung_i2s_priv *priv)
{
struct platform_device *pdev;
int ret;
pdev = platform_device_register_simple("samsung-i2s-sec", -1, NULL, 0);
if (!pdev)
return -ENOMEM;
ret = device_attach(&pdev->dev);
if (ret < 0) {
dev_info(&pdev->dev, "device_attach() failed\n");
return ret;
}
priv->pdev_sec = pdev;
return 0;
}
static void i2s_delete_secondary_device(struct samsung_i2s_priv *priv)
{
if (priv->pdev_sec) {
platform_device_del(priv->pdev_sec);
priv->pdev_sec = NULL;
}
}
static int samsung_i2s_probe(struct platform_device *pdev)
{
struct i2s_dai *pri_dai, *sec_dai = NULL;
@ -1323,13 +1352,15 @@ static int samsung_i2s_probe(struct platform_device *pdev)
i2s_dai_data = (struct samsung_i2s_dai_data *)
platform_get_device_id(pdev)->driver_data;
/* Nothing to do if it is the secondary device probe */
if (!i2s_dai_data)
return 0;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
quirks = np ? i2s_dai_data->quirks : i2s_pdata->type.quirks;
quirks &= ~(QUIRK_SEC_DAI | QUIRK_SUPPORTS_IDMA);
num_dais = (quirks & QUIRK_SEC_DAI) ? 2 : 1;
priv->pdev = pdev;
@ -1419,8 +1450,13 @@ static int samsung_i2s_probe(struct platform_device *pdev)
sec_dai->pri_dai = pri_dai;
pri_dai->sec_dai = sec_dai;
ret = samsung_asoc_dma_platform_register(&pdev->dev,
sec_dai->filter, "tx-sec", NULL, NULL);
ret = i2s_create_secondary_device(priv);
if (ret < 0)
goto err_disable_clk;
ret = samsung_asoc_dma_platform_register(&priv->pdev_sec->dev,
sec_dai->filter, "tx-sec", NULL,
&pdev->dev);
if (ret < 0)
goto err_disable_clk;
@ -1455,6 +1491,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
err_disable_clk:
clk_disable_unprepare(pri_dai->clk);
i2s_delete_secondary_device(priv);
return ret;
}
@ -1463,12 +1500,17 @@ static int samsung_i2s_remove(struct platform_device *pdev)
struct samsung_i2s_priv *priv = dev_get_drvdata(&pdev->dev);
struct i2s_dai *pri_dai = samsung_i2s_get_pri_dai(&pdev->dev);
/* The secondary device has no driver data assigned */
if (!priv)
return 0;
pm_runtime_get_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
i2s_unregister_clock_provider(pdev);
clk_disable_unprepare(pri_dai->clk);
pm_runtime_put_noidle(&pdev->dev);
i2s_delete_secondary_device(priv);
return 0;
}
@ -1566,6 +1608,8 @@ static const struct platform_device_id samsung_i2s_driver_ids[] = {
{
.name = "samsung-i2s",
.driver_data = (kernel_ulong_t)&i2sv3_dai_type,
}, {
.name = "samsung-i2s-sec",
},
{},
};