Commit e0772de8 authored by Srinivas Kandagatla's avatar Srinivas Kandagatla Committed by Greg Kroah-Hartman

slimbus: core: add of_slim_device_get() helper

On SLIMBus controllers like Qcom NGD(non ported device), controller
can request logical address once the remote side is powered, having a
helper function like this to explicitly enumerate the bus is helpful.
Also codec drivers which are taking to interface device would need
such a helper too.
Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ba883d90
...@@ -356,6 +356,45 @@ struct slim_device *slim_get_device(struct slim_controller *ctrl, ...@@ -356,6 +356,45 @@ struct slim_device *slim_get_device(struct slim_controller *ctrl,
} }
EXPORT_SYMBOL_GPL(slim_get_device); EXPORT_SYMBOL_GPL(slim_get_device);
static int of_slim_match_dev(struct device *dev, void *data)
{
struct device_node *np = data;
struct slim_device *sbdev = to_slim_device(dev);
return (sbdev->dev.of_node == np);
}
static struct slim_device *of_find_slim_device(struct slim_controller *ctrl,
struct device_node *np)
{
struct slim_device *sbdev;
struct device *dev;
dev = device_find_child(ctrl->dev, np, of_slim_match_dev);
if (dev) {
sbdev = to_slim_device(dev);
return sbdev;
}
return NULL;
}
/**
* of_slim_get_device() - get handle to a device using dt node.
*
* @ctrl: Controller on which this device will be added/queried
* @np: node pointer to device
*
* Return: pointer to a device if it has already reported. Creates a new
* device and returns pointer to it if the device has not yet enumerated.
*/
struct slim_device *of_slim_get_device(struct slim_controller *ctrl,
struct device_node *np)
{
return of_find_slim_device(ctrl, np);
}
EXPORT_SYMBOL_GPL(of_slim_get_device);
static int slim_device_alloc_laddr(struct slim_device *sbdev, static int slim_device_alloc_laddr(struct slim_device *sbdev,
bool report_present) bool report_present)
{ {
......
...@@ -138,6 +138,8 @@ static inline void slim_set_devicedata(struct slim_device *dev, void *data) ...@@ -138,6 +138,8 @@ static inline void slim_set_devicedata(struct slim_device *dev, void *data)
dev_set_drvdata(&dev->dev, data); dev_set_drvdata(&dev->dev, data);
} }
struct slim_device *of_slim_get_device(struct slim_controller *ctrl,
struct device_node *np);
struct slim_device *slim_get_device(struct slim_controller *ctrl, struct slim_device *slim_get_device(struct slim_controller *ctrl,
struct slim_eaddr *e_addr); struct slim_eaddr *e_addr);
int slim_get_logical_addr(struct slim_device *sbdev); int slim_get_logical_addr(struct slim_device *sbdev);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment