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Message-Id: <1263279511.162732.415109166708.7.gpush@pororo>
Date: Tue, 12 Jan 2010 17:58:31 +1100
From: Jeremy Kerr <jeremy.kerr@...onical.com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linuxppc-dev@...ts.ozlabs.org
Subject: [RFC,PATCH 7/7 v2] arm/icst307: remove icst307_ps_to_vco
icst307_ps_to_vco isn't used, so remove it.
Signed-off-by: Jeremy Kerr <jeremy.kerr@...onical.com>
---
arch/arm/common/icst307.c | 62 --------------------------------------
1 file changed, 62 deletions(-)
diff --git a/arch/arm/common/icst307.c b/arch/arm/common/icst307.c
index cd45b88..9d8d087 100644
--- a/arch/arm/common/icst307.c
+++ b/arch/arm/common/icst307.c
@@ -96,68 +96,6 @@ icst307_khz_to_vco(const struct icst307_params *p, unsigned long freq)
return vco;
}
-static struct icst307_vco
-icst307_ps_to_vco(const struct icst307_params *p, unsigned long period)
-{
- struct icst307_vco vco = { .s = 1, .v = p->vd_max, .r = p->rd_max };
- unsigned long f, ps;
- unsigned int i = 0, rd, best = (unsigned int)-1;
-
- ps = 1000000000UL / p->vco_max;
-
- /*
- * First, find the PLL output divisor such
- * that the PLL output is within spec.
- */
- do {
- f = period / s2div[idx2s[i]];
-
- /*
- * f must be between 6MHz and 200MHz (3.3 or 5V)
- */
- if (f >= ps && f < 1000000000UL / 6000 + 1)
- break;
- } while (i < ARRAY_SIZE(idx2s));
-
- if (i >= ARRAY_SIZE(idx2s))
- return vco;
-
- vco.s = idx2s[i];
-
- ps = 500000000UL / p->ref;
-
- /*
- * Now find the closest divisor combination
- * which gives a PLL output of 'f'.
- */
- for (rd = p->rd_min; rd <= p->rd_max; rd++) {
- unsigned long f_in_div, f_pll;
- unsigned int vd;
- int f_diff;
-
- f_in_div = ps * rd;
-
- vd = (f_in_div + f / 2) / f;
- if (vd < p->vd_min || vd > p->vd_max)
- continue;
-
- f_pll = (f_in_div + vd / 2) / vd;
- f_diff = f_pll - f;
- if (f_diff < 0)
- f_diff = -f_diff;
-
- if ((unsigned)f_diff < best) {
- vco.v = vd - 8;
- vco.r = rd - 2;
- if (f_diff == 0)
- break;
- best = f_diff;
- }
- }
-
- return vco;
-}
-
static unsigned long clk_icst307_get_rate(struct clk *clk)
{
return to_clk_icst307(clk)->rate;
--
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