diff options
| author | Stephen Warren <swarren@nvidia.com> | 2016-08-08 09:41:33 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-08-12 11:01:22 -0600 |
| commit | b647f55420310beb8f576e23f3b6a69745126f71 (patch) | |
| tree | fab32f8718b719a18d6a08787101611c65bbccbe /drivers/misc | |
| parent | aa26776a2dfbf327d38a469e0d4e438f967350ab (diff) | |
misc: add "call" uclass op
The call op requests that the callee pass a message to the underlying HW
or device, wait for a response, and then pass back the response error code
and message to the callee. It is useful for drivers that represent some
kind of messaging or IPC channel to a remote device.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/misc-uclass.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/misc/misc-uclass.c b/drivers/misc/misc-uclass.c index 13a6ea508b..d9eea3dac5 100644 --- a/drivers/misc/misc-uclass.c +++ b/drivers/misc/misc-uclass.c @@ -45,6 +45,17 @@ int misc_ioctl(struct udevice *dev, unsigned long request, void *buf) return ops->ioctl(dev, request, buf); } +int misc_call(struct udevice *dev, int msgid, void *tx_msg, int tx_size, + void *rx_msg, int rx_size) +{ + const struct misc_ops *ops = device_get_ops(dev); + + if (!ops->call) + return -ENOSYS; + + return ops->call(dev, msgid, tx_msg, tx_size, rx_msg, rx_size); +} + UCLASS_DRIVER(misc) = { .id = UCLASS_MISC, .name = "misc", |