diff options
| author | Simon Glass <sjg@chromium.org> | 2014-10-13 23:41:50 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-10-22 10:36:46 -0600 |
| commit | accd4b19b39bde7398aa8d1a8eeb66f3a14dde5b (patch) | |
| tree | 09bcc8e1c9ebd5b6213bdb198b35691f8902e57a /drivers/core | |
| parent | a8981d4f80b010666ad754d20a4f389f94d6726d (diff) | |
| download | u-boot-imx-accd4b19b39bde7398aa8d1a8eeb66f3a14dde5b.zip u-boot-imx-accd4b19b39bde7398aa8d1a8eeb66f3a14dde5b.tar.gz u-boot-imx-accd4b19b39bde7398aa8d1a8eeb66f3a14dde5b.tar.bz2 | |
dm: core: Allow parents to pass data to children during probe
Buses sometimes want to pass data to their children when they are probed.
For example, a SPI bus may want to tell the slave device about the chip
select it is connected to.
Add a new function to permit the parent data to be supplied to the child.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Diffstat (limited to 'drivers/core')
| -rw-r--r-- | drivers/core/device.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/core/device.c b/drivers/core/device.c index 9538874..49faa29 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -232,7 +232,7 @@ static void device_free(struct udevice *dev) } } -int device_probe(struct udevice *dev) +int device_probe_child(struct udevice *dev, void *parent_priv) { struct driver *drv; int size = 0; @@ -282,6 +282,8 @@ int device_probe(struct udevice *dev) ret = -ENOMEM; goto fail; } + if (parent_priv) + memcpy(dev->parent_priv, parent_priv, size); } ret = device_probe(dev->parent); @@ -335,6 +337,11 @@ fail: return ret; } +int device_probe(struct udevice *dev) +{ + return device_probe_child(dev, NULL); +} + int device_remove(struct udevice *dev) { struct driver *drv; |