sh: extend clock struct with mapped_reg member
Add a "mapped_reg" member to struct clk and use that
to keep the ioremapped register based on enable_reg.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c
index db257a3..7715de2 100644
--- a/drivers/sh/clk/core.c
+++ b/drivers/sh/clk/core.c
@@ -355,7 +355,7 @@
*/
if (!clk->parent) {
clk->mapping = &dummy_mapping;
- return 0;
+ goto out;
}
/*
@@ -384,6 +384,9 @@
}
clk->mapping = mapping;
+out:
+ clk->mapped_reg = clk->mapping->base;
+ clk->mapped_reg += (phys_addr_t)clk->enable_reg - clk->mapping->phys;
return 0;
}
@@ -402,10 +405,12 @@
/* Nothing to do */
if (mapping == &dummy_mapping)
- return;
+ goto out;
kref_put(&mapping->ref, clk_destroy_mapping);
clk->mapping = NULL;
+out:
+ clk->mapped_reg = NULL;
}
int clk_register(struct clk *clk)