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Subject: [media] exynos4-is: add of_platform_populate() call for FIMC-IS child
devices
Author: Sylwester Nawrocki <s.nawro...@samsung.com>
Date: Tue Sep 13 08:59:49 2016 -0300
Instead of relying on the "simple-bus" compatible and the driver core
populating FIMC-IS child devices make the fimc-is driver populating
its child devices. This prevents issues related to accessing ISP_I2C
clock registers with corresponding power domain switched off, which
popped out after applying some pending IOMMU driver patches. Now the
I2C_ISP child devices will be instantiated only when required parent
device drivers are initialized and ready.
Signed-off-by: Marek Szyprowski <m.szyprow...@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawro...@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>
drivers/media/platform/exynos4-is/fimc-is.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
---
diff --git a/drivers/media/platform/exynos4-is/fimc-is.c
b/drivers/media/platform/exynos4-is/fimc-is.c
index 313ab10dbb94..518ad34f80d7 100644
--- a/drivers/media/platform/exynos4-is/fimc-is.c
+++ b/drivers/media/platform/exynos4-is/fimc-is.c
@@ -852,13 +852,18 @@ static int fimc_is_probe(struct platform_device *pdev)
goto err_pm;
vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
+
+ ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
+ if (ret < 0)
+ goto err_pm;
+
/*
* Register FIMC-IS V4L2 subdevs to this driver. The video nodes
* will be created within the subdev's registered() callback.
*/
ret = fimc_is_register_subdevs(is);
if (ret < 0)
- goto err_pm;
+ goto err_of_dep;
ret = fimc_is_debugfs_create(is);
if (ret < 0)
@@ -877,6 +882,8 @@ err_dfs:
fimc_is_debugfs_remove(is);
err_sd:
fimc_is_unregister_subdevs(is);
+err_of_dep:
+ of_platform_depopulate(dev);
err_pm:
if (!pm_runtime_enabled(dev))
fimc_is_runtime_suspend(dev);
@@ -936,6 +943,7 @@ static int fimc_is_remove(struct platform_device *pdev)
if (!pm_runtime_status_suspended(dev))
fimc_is_runtime_suspend(dev);
free_irq(is->irq, is);
+ of_platform_depopulate(dev);
fimc_is_unregister_subdevs(is);
vb2_dma_contig_clear_max_seg_size(dev);
fimc_is_put_clocks(is);
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