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authorSascha Hauer <s.hauer@pengutronix.de>2012-09-11 08:40:38 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2012-09-12 11:46:45 +0200
commita6dd3c812e774b876d440c1a9ec1bd0fd5659390 (patch)
tree1f72b83956cafac59a3d7e453ff546c61aa88337 /arch/arm/plat-mxc
parent8b23f5132d319c790e5f56df6f3df3a84071ae6e (diff)
ARM: i.MX clk pllv1: move mxc_decode_pll code to its user
The only code using mxc_decode_pll is clk-pllv1.c, so move the code there. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'arch/arm/plat-mxc')
-rw-r--r--arch/arm/plat-mxc/clock.c45
-rw-r--r--arch/arm/plat-mxc/include/mach/clock.h2
2 files changed, 0 insertions, 47 deletions
diff --git a/arch/arm/plat-mxc/clock.c b/arch/arm/plat-mxc/clock.c
index 5079787273d..0ed09549468 100644
--- a/arch/arm/plat-mxc/clock.c
+++ b/arch/arm/plat-mxc/clock.c
@@ -210,48 +210,3 @@ EXPORT_SYMBOL(clk_get_parent);
DEFINE_SPINLOCK(imx_ccm_lock);
#endif /* CONFIG_COMMON_CLK */
-
-/*
- * Get the resulting clock rate from a PLL register value and the input
- * frequency. PLLs with this register layout can at least be found on
- * MX1, MX21, MX27 and MX31
- *
- * mfi + mfn / (mfd + 1)
- * f = 2 * f_ref * --------------------
- * pd + 1
- */
-unsigned long mxc_decode_pll(unsigned int reg_val, u32 freq)
-{
- long long ll;
- int mfn_abs;
- unsigned int mfi, mfn, mfd, pd;
-
- mfi = (reg_val >> 10) & 0xf;
- mfn = reg_val & 0x3ff;
- mfd = (reg_val >> 16) & 0x3ff;
- pd = (reg_val >> 26) & 0xf;
-
- mfi = mfi <= 5 ? 5 : mfi;
-
- mfn_abs = mfn;
-
- /* On all i.MXs except i.MX1 and i.MX21 mfn is a 10bit
- * 2's complements number
- */
- if (!cpu_is_mx1() && !cpu_is_mx21() && mfn >= 0x200)
- mfn_abs = 0x400 - mfn;
-
- freq *= 2;
- freq /= pd + 1;
-
- ll = (unsigned long long)freq * mfn_abs;
-
- do_div(ll, mfd + 1);
-
- if (!cpu_is_mx1() && !cpu_is_mx21() && mfn >= 0x200)
- ll = -ll;
-
- ll = (freq * mfi) + ll;
-
- return ll;
-}
diff --git a/arch/arm/plat-mxc/include/mach/clock.h b/arch/arm/plat-mxc/include/mach/clock.h
index bd940c795cb..0c4ad776f72 100644
--- a/arch/arm/plat-mxc/include/mach/clock.h
+++ b/arch/arm/plat-mxc/include/mach/clock.h
@@ -64,7 +64,5 @@ void clk_unregister(struct clk *clk);
extern spinlock_t imx_ccm_lock;
-unsigned long mxc_decode_pll(unsigned int pll, u32 f_ref);
-
#endif /* __ASSEMBLY__ */
#endif /* __ASM_ARCH_MXC_CLOCK_H__ */