The patch

ASoC: samsung: i2s: Fix multiple "IIS multi" devices initialization

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.

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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.

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Thanks, Mark

From c6bebefa2f0603fb21ae329521e15461b0486679 Mon Sep 17 00:00:00 2001

From: Sylwester Nawrocki s.nawrocki@samsung.com Date: Tue, 19 Feb 2019 16:19:41 +0100 Subject: [PATCH] ASoC: samsung: i2s: Fix multiple "IIS multi" devices initialization

On some SoCs (e.g. Exynos5433) there are multiple "IIS multi audio interfaces" and the driver will try to register there multiple times same platform device for the secondary FIFO, which of course fails miserably. To fix this we derive the secondary platform device name from the primary device name. The secondary device name will now be <primary_dev_name>-sec instead of fixed "samsung-i2s-sec".

The fixed platform_device_id table entry is removed as the secondary device name is now dynamic and device/driver matching is done through driver_override.

Reported-by: Marek Szyprowski m.szyprowski@samsung.com Suggested-by: Marek Szyprowski m.szyprowski@samsung.com Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com Acked-by: Krzysztof Kozlowski krzk@kernel.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/samsung/i2s.c | 50 +++++++++++++++++++++++++------------- sound/soc/samsung/odroid.c | 2 +- 2 files changed, 34 insertions(+), 18 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index cd92bb6e1da1..4231001226f4 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -1339,20 +1339,35 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv) /* Create platform device for the secondary PCM */ static int i2s_create_secondary_device(struct samsung_i2s_priv *priv) { - struct platform_device *pdev; + struct platform_device *pdev_sec; + const char *devname; int ret;

- pdev = platform_device_register_simple("samsung-i2s-sec", -1, NULL, 0); - if (!pdev) + devname = devm_kasprintf(&priv->pdev->dev, GFP_KERNEL, "%s-sec", + dev_name(&priv->pdev->dev)); + if (!devname) return -ENOMEM;

- ret = device_attach(&pdev->dev); + pdev_sec = platform_device_alloc(devname, -1); + if (!pdev_sec) + return -ENOMEM; + + pdev_sec->driver_override = kstrdup("samsung-i2s", GFP_KERNEL); + + ret = platform_device_add(pdev_sec); if (ret < 0) { - dev_info(&pdev->dev, "device_attach() failed\n"); + platform_device_put(pdev_sec); return ret; }

- priv->pdev_sec = pdev; + ret = device_attach(&pdev_sec->dev); + if (ret <= 0) { + platform_device_unregister(priv->pdev_sec); + dev_info(&pdev_sec->dev, "device_attach() failed\n"); + return ret; + } + + priv->pdev_sec = pdev_sec;

return 0; } @@ -1367,22 +1382,25 @@ static int samsung_i2s_probe(struct platform_device *pdev) { struct i2s_dai *pri_dai, *sec_dai = NULL; struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data; - struct resource *res; u32 regs_base, idma_addr = 0; struct device_node *np = pdev->dev.of_node; const struct samsung_i2s_dai_data *i2s_dai_data; - int num_dais, ret; + const struct platform_device_id *id; struct samsung_i2s_priv *priv; + struct resource *res; + int num_dais, ret;

- if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) + if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) { i2s_dai_data = of_device_get_match_data(&pdev->dev); - else - i2s_dai_data = (struct samsung_i2s_dai_data *) - platform_get_device_id(pdev)->driver_data; + } else { + id = platform_get_device_id(pdev);

- /* Nothing to do if it is the secondary device probe */ - if (!i2s_dai_data) - return 0; + /* Nothing to do if it is the secondary device probe */ + if (!id) + return 0; + + i2s_dai_data = (struct samsung_i2s_dai_data *)id->driver_data; + }

priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) @@ -1637,8 +1655,6 @@ 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", }, {}, }; diff --git a/sound/soc/samsung/odroid.c b/sound/soc/samsung/odroid.c index 5b2bcd1d3450..bd2c5163dc7f 100644 --- a/sound/soc/samsung/odroid.c +++ b/sound/soc/samsung/odroid.c @@ -185,7 +185,7 @@ static struct snd_soc_dai_link odroid_card_dais[] = { .ops = &odroid_card_fe_ops, .name = "Secondary", .stream_name = "Secondary", - .platform_name = "samsung-i2s-sec", + .platform_name = "3830000.i2s-sec", .dynamic = 1, .dpcm_playback = 1, }