From 83c7e434c9dd3ca81f8b763e23c1881b973bcf2f Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 25 Jan 2015 08:27:10 -0700 Subject: dm: core: Allow uclass to set up a device's child before it is probed Some buses need to set up their devices before they can be used. This setup may well be common to all buses in a particular uclass. Support a common pre-probe method for the uclass, called before any bus devices are probed. Signed-off-by: Simon Glass Reviewed-by: Masahiro Yamada --- drivers/core/device.c | 4 ++++ drivers/core/uclass.c | 13 +++++++++++++ 2 files changed, 17 insertions(+) (limited to 'drivers') diff --git a/drivers/core/device.c b/drivers/core/device.c index 78bc460d35..b73d3b8961 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -227,6 +227,10 @@ int device_probe_child(struct udevice *dev, void *parent_priv) } dev->seq = seq; + ret = uclass_pre_probe_child(dev); + if (ret) + goto fail; + if (dev->parent && dev->parent->driver->child_pre_probe) { ret = dev->parent->driver->child_pre_probe(dev); if (ret) diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index a5445518f5..289a5d2d53 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -391,6 +391,19 @@ int uclass_resolve_seq(struct udevice *dev) return seq; } +int uclass_pre_probe_child(struct udevice *dev) +{ + struct uclass_driver *uc_drv; + + if (!dev->parent) + return 0; + uc_drv = dev->parent->uclass->uc_drv; + if (uc_drv->child_pre_probe) + return uc_drv->child_pre_probe(dev); + + return 0; +} + int uclass_post_probe_device(struct udevice *dev) { struct uclass_driver *uc_drv = dev->uclass->uc_drv; -- cgit v1.2.1