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path: root/drivers/sh/clk/cpg.c
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Diffstat (limited to 'drivers/sh/clk/cpg.c')
-rw-r--r--drivers/sh/clk/cpg.c40
1 files changed, 14 insertions, 26 deletions
diff --git a/drivers/sh/clk/cpg.c b/drivers/sh/clk/cpg.c
index eeb028b9cdb3..64ed7d64458a 100644
--- a/drivers/sh/clk/cpg.c
+++ b/drivers/sh/clk/cpg.c
@@ -26,6 +26,19 @@ static unsigned int sh_clk_read(struct clk *clk)
return ioread32(clk->mapped_reg);
}
+static unsigned int sh_clk_read_status(struct clk *clk)
+{
+ void __iomem *mapped_status = (phys_addr_t)clk->status_reg -
+ (phys_addr_t)clk->enable_reg + clk->mapped_reg;
+
+ if (clk->flags & CLK_ENABLE_REG_8BIT)
+ return ioread8(mapped_status);
+ else if (clk->flags & CLK_ENABLE_REG_16BIT)
+ return ioread16(mapped_status);
+
+ return ioread32(mapped_status);
+}
+
static void sh_clk_write(int value, struct clk *clk)
{
if (clk->flags & CLK_ENABLE_REG_8BIT)
@@ -36,39 +49,14 @@ static void sh_clk_write(int value, struct clk *clk)
iowrite32(value, clk->mapped_reg);
}
-static unsigned int r8(const void __iomem *addr)
-{
- return ioread8(addr);
-}
-
-static unsigned int r16(const void __iomem *addr)
-{
- return ioread16(addr);
-}
-
-static unsigned int r32(const void __iomem *addr)
-{
- return ioread32(addr);
-}
-
static int sh_clk_mstp_enable(struct clk *clk)
{
sh_clk_write(sh_clk_read(clk) & ~(1 << clk->enable_bit), clk);
if (clk->status_reg) {
- unsigned int (*read)(const void __iomem *addr);
int i;
- void __iomem *mapped_status = (phys_addr_t)clk->status_reg -
- (phys_addr_t)clk->enable_reg + clk->mapped_reg;
-
- if (clk->flags & CLK_ENABLE_REG_8BIT)
- read = r8;
- else if (clk->flags & CLK_ENABLE_REG_16BIT)
- read = r16;
- else
- read = r32;
for (i = 1000;
- (read(mapped_status) & (1 << clk->enable_bit)) && i;
+ (sh_clk_read_status(clk) & (1 << clk->enable_bit)) && i;
i--)
cpu_relax();
if (!i) {