bcma: add support for sprom not found on the device

On SoCs the sprom is stored in the nvram in a special partition on the
flash chip. The nvram contains the sprom for the main bus, but
sometimes also for a pci devices using bcma. This patch makes it
possible for the arch code to register a function to fetch the needed
sprom from the nvram and provide it to the bcma code.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h
index 46bbd088c4ad..5af9a075498f 100644
--- a/include/linux/bcma/bcma.h
+++ b/include/linux/bcma/bcma.h
@@ -176,6 +176,12 @@ int __bcma_driver_register(struct bcma_driver *drv, struct module *owner);
 
 extern void bcma_driver_unregister(struct bcma_driver *drv);
 
+/* Set a fallback SPROM.
+ * See kdoc at the function definition for complete documentation. */
+extern int bcma_arch_register_fallback_sprom(
+		int (*sprom_callback)(struct bcma_bus *bus,
+		struct ssb_sprom *out));
+
 struct bcma_bus {
 	/* The MMIO area. */
 	void __iomem *mmio;