@@ -386,6 +386,23 @@ static struct bus_type spmi_bus_type = {
.uevent = spmi_drv_uevent,
};
+/**
+ * spmi_device_from_of() - get the associated SPMI device from a device node
+ *
+ * @np: device node
+ *
+ * Returns the struct spmi_device associated with a device node or NULL.
+ */
+inline struct spmi_device *spmi_device_from_of(struct device_node *np)
+{
+ struct device *dev = bus_find_device_by_of_node(&spmi_bus_type, np);
+
+ if (dev)
+ return to_spmi_device(dev);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(spmi_device_from_of);
+
/**
* spmi_controller_alloc() - Allocate a new SPMI device
* @ctrl: associated controller
@@ -7,6 +7,7 @@
#include <linux/types.h>
#include <linux/device.h>
#include <linux/mod_devicetable.h>
+#include <linux/of.h>
/* Maximum slave identifier */
#define SPMI_MAX_SLAVE_ID 16
@@ -164,6 +165,7 @@ static inline void spmi_driver_unregister(struct spmi_driver *sdrv)
module_driver(__spmi_driver, spmi_driver_register, \
spmi_driver_unregister)
+inline struct spmi_device *spmi_device_from_of(struct device_node *np);
int spmi_register_read(struct spmi_device *sdev, u8 addr, u8 *buf);
int spmi_ext_register_read(struct spmi_device *sdev, u8 addr, u8 *buf,
size_t len);
The helper function spmi_device_from_of() takes a device node and returns the SPMI device associated with it. This is like of_find_device_by_node but for SPMI devices. Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> --- drivers/spmi/spmi.c | 17 +++++++++++++++++ include/linux/spmi.h | 2 ++ 2 files changed, 19 insertions(+)