*
* Return: a pointer to the new device, or NULL.
*/
-static struct spi_device *spi_alloc_device(struct spi_controller *ctlr)
+struct spi_device *spi_alloc_device(struct spi_controller *ctlr)
{
struct spi_device *spi;
device_initialize(&spi->dev);
return spi;
}
+EXPORT_SYMBOL_GPL(spi_alloc_device);
static void spi_dev_set_name(struct spi_device *spi)
{
*
* Return: 0 on success; negative errno on failure
*/
-static int spi_add_device(struct spi_device *spi)
+int spi_add_device(struct spi_device *spi)
{
struct spi_controller *ctlr = spi->controller;
struct device *dev = ctlr->dev.parent;
mutex_unlock(&ctlr->add_lock);
return status;
}
+EXPORT_SYMBOL_GPL(spi_add_device);
static int spi_add_device_locked(struct spi_device *spi)
{
* use spi_new_device() to describe each device. You can also call
* spi_unregister_device() to start making that device vanish, but
* normally that would be handled by spi_unregister_controller().
+ *
+ * You can also use spi_alloc_device() and spi_add_device() to use a two
+ * stage registration sequence for each spi_device. This gives the caller
+ * some more control over the spi_device structure before it is registered,
+ * but requires that caller to initialize fields that would otherwise
+ * be defined using the board info.
*/
extern struct spi_device *
+spi_alloc_device(struct spi_controller *ctlr);
+
+extern int
+spi_add_device(struct spi_device *spi);
+
+extern struct spi_device *
spi_new_device(struct spi_controller *, struct spi_board_info *);
extern void spi_unregister_device(struct spi_device *spi);