From eda2030a5b60bb818f062adacbcfb6fd2d366fb9 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Thu, 8 Dec 2011 22:58:54 +0900 Subject: [PATCH] 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 Signed-off-by: Paul Mundt --- drivers/sh/clk/core.c | 9 +++++++-- include/linux/sh_clk.h | 1 + 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c index db257a35e71a..7715de2629c1 100644 --- a/drivers/sh/clk/core.c +++ b/drivers/sh/clk/core.c @@ -355,7 +355,7 @@ static int clk_establish_mapping(struct clk *clk) */ if (!clk->parent) { clk->mapping = &dummy_mapping; - return 0; + goto out; } /* @@ -384,6 +384,9 @@ static int clk_establish_mapping(struct clk *clk) } 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 @@ static void clk_teardown_mapping(struct clk *clk) /* 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) diff --git a/include/linux/sh_clk.h b/include/linux/sh_clk.h index e834304c0b6a..54341d811685 100644 --- a/include/linux/sh_clk.h +++ b/include/linux/sh_clk.h @@ -49,6 +49,7 @@ struct clk { void __iomem *enable_reg; unsigned int enable_bit; + void __iomem *mapped_reg; unsigned long arch_flags; void *priv;