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Date: Wed, 28 Jan 2009 12:27:51 -0700
From: Paul Walmsley <paul@...an.com>
To: linux-arm-kernel@...ts.arm.linux.org.uk,
linux-kernel@...r.kernel.org
Cc: linux-omap@...r.kernel.org, Paul Walmsley <paul@...an.com>,
Tony Lindgren <tony@...mide.com>
Subject: [PATCH E 08/14] OMAP clock: move rate recalc,
propagation code up to plat-omap/clock.c
Previously the individual clock recalculation functions handled their
own rate recalculation. This can be handled in the clk_set_rate(),
clk_set_parent(), and recalculate_root_clocks() functions in
plat-omap/clock.c. Removes duplicate code and clarifies the role of the
recalc functions.
linux-omap source commit is b66c1baa9f8e60213457414976575e6265217a70.
Signed-off-by: Paul Walmsley <paul@...an.com>
Signed-off-by: Tony Lindgren <tony@...mide.com>
---
arch/arm/mach-omap1/clock.c | 14 --------------
arch/arm/mach-omap2/clock.c | 12 ------------
arch/arm/mach-omap2/clock24xx.c | 6 ------
arch/arm/mach-omap2/clock34xx.c | 9 ---------
arch/arm/plat-omap/clock.c | 34 +++++++++++++++++++++++++++-------
5 files changed, 27 insertions(+), 48 deletions(-)
diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c
index 4d0c444..ae2b304 100644
--- a/arch/arm/mach-omap1/clock.c
+++ b/arch/arm/mach-omap1/clock.c
@@ -225,9 +225,6 @@ static void omap1_ckctl_recalc(struct clk * clk)
if (unlikely(clk->rate == clk->parent->rate / dsor))
return; /* No change, quick exit */
clk->rate = clk->parent->rate / dsor;
-
- if (unlikely(clk->flags & RATE_PROPAGATES))
- propagate_rate(clk);
}
static void omap1_ckctl_recalc_dsp_domain(struct clk * clk)
@@ -248,9 +245,6 @@ static void omap1_ckctl_recalc_dsp_domain(struct clk * clk)
if (unlikely(clk->rate == clk->parent->rate / dsor))
return; /* No change, quick exit */
clk->rate = clk->parent->rate / dsor;
-
- if (unlikely(clk->flags & RATE_PROPAGATES))
- propagate_rate(clk);
}
/* MPU virtual clock functions */
@@ -314,9 +308,6 @@ static int omap1_clk_set_rate_dsp_domain(struct clk *clk, unsigned long rate)
ret = 0;
}
- if (unlikely(ret == 0 && (clk->flags & RATE_PROPAGATES)))
- propagate_rate(clk);
-
return ret;
}
@@ -423,8 +414,6 @@ static int omap1_set_sossi_rate(struct clk *clk, unsigned long rate)
omap_writel(l, MOD_CONF_CTRL_1);
clk->rate = p_rate / (div + 1);
- if (unlikely(clk->flags & RATE_PROPAGATES))
- propagate_rate(clk);
return 0;
}
@@ -583,9 +572,6 @@ static int omap1_clk_set_rate(struct clk *clk, unsigned long rate)
ret = 0;
}
- if (unlikely(ret == 0 && (clk->flags & RATE_PROPAGATES)))
- propagate_rate(clk);
-
return ret;
}
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index d4d2e7b..4a72535 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -300,9 +300,6 @@ void omap2_fixed_divisor_recalc(struct clk *clk)
WARN_ON(!clk->fixed_div);
clk->rate = clk->parent->rate / clk->fixed_div;
-
- if (clk->flags & RATE_PROPAGATES)
- propagate_rate(clk);
}
/**
@@ -504,9 +501,6 @@ void omap2_clksel_recalc(struct clk *clk)
clk->rate = clk->parent->rate / div;
pr_debug("clock: new clock rate is %ld (div %d)\n", clk->rate, div);
-
- if (clk->flags & RATE_PROPAGATES)
- propagate_rate(clk);
}
/**
@@ -777,9 +771,6 @@ int omap2_clk_set_rate(struct clk *clk, unsigned long rate)
if (clk->set_rate)
ret = clk->set_rate(clk, rate);
- if (ret == 0 && (clk->flags & RATE_PROPAGATES))
- propagate_rate(clk);
-
return ret;
}
@@ -861,9 +852,6 @@ int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent)
pr_debug("clock: set parent of %s to %s (new rate %ld)\n",
clk->name, clk->parent->name, clk->rate);
- if (clk->flags & RATE_PROPAGATES)
- propagate_rate(clk);
-
return 0;
}
diff --git a/arch/arm/mach-omap2/clock24xx.c b/arch/arm/mach-omap2/clock24xx.c
index 3727a73..57cd85b 100644
--- a/arch/arm/mach-omap2/clock24xx.c
+++ b/arch/arm/mach-omap2/clock24xx.c
@@ -179,8 +179,6 @@ static long omap2_dpllcore_round_rate(unsigned long target_rate)
static void omap2_dpllcore_recalc(struct clk *clk)
{
clk->rate = omap2xxx_clk_get_core_rate(clk);
-
- propagate_rate(clk);
}
static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
@@ -251,7 +249,6 @@ static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
omap2xxx_sdrc_init_params(omap2xxx_sdrc_dll_is_unlocked());
omap2xxx_sdrc_reprogram(done_rate, 0);
}
- omap2_dpllcore_recalc(&dpll_ck);
ret = 0;
dpll_exit:
@@ -380,7 +377,6 @@ static int omap2_select_table_rate(struct clk *clk, unsigned long rate)
local_irq_restore(flags);
}
- omap2_dpllcore_recalc(&dpll_ck);
return 0;
}
@@ -470,13 +466,11 @@ static u32 omap2_get_sysclkdiv(void)
static void omap2_osc_clk_recalc(struct clk *clk)
{
clk->rate = omap2_get_apll_clkin() * omap2_get_sysclkdiv();
- propagate_rate(clk);
}
static void omap2_sys_clk_recalc(struct clk *clk)
{
clk->rate = clk->parent->rate / omap2_get_sysclkdiv();
- propagate_rate(clk);
}
/*
diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index 738a029..22cbcce 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -54,8 +54,6 @@
static void omap3_dpll_recalc(struct clk *clk)
{
clk->rate = omap2_get_dpll_rate(clk);
-
- propagate_rate(clk);
}
/* _omap3_dpll_write_clken - write clken_bits arg to a DPLL's enable bits */
@@ -429,8 +427,6 @@ static int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
}
- omap3_dpll_recalc(clk);
-
return 0;
}
@@ -493,8 +489,6 @@ static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
sp->actim_ctrlb, new_div);
local_irq_enable();
- omap2_clksel_recalc(clk);
-
return 0;
}
@@ -612,9 +606,6 @@ static void omap3_clkoutx2_recalc(struct clk *clk)
clk->rate = clk->parent->rate;
else
clk->rate = clk->parent->rate * 2;
-
- if (clk->flags & RATE_PROPAGATES)
- propagate_rate(clk);
}
/* Common clock code */
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index be6aab9..c60548a 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -183,8 +183,16 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
return ret;
spin_lock_irqsave(&clockfw_lock, flags);
- if (arch_clock->clk_set_rate)
+
+ if (arch_clock->clk_set_rate) {
ret = arch_clock->clk_set_rate(clk, rate);
+ if (ret == 0) {
+ (*clk->recalc)(clk);
+ if (clk->flags & RATE_PROPAGATES)
+ propagate_rate(clk);
+ }
+ }
+
spin_unlock_irqrestore(&clockfw_lock, flags);
return ret;
@@ -200,8 +208,16 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
return ret;
spin_lock_irqsave(&clockfw_lock, flags);
- if (arch_clock->clk_set_parent)
- ret = arch_clock->clk_set_parent(clk, parent);
+
+ if (arch_clock->clk_set_parent) {
+ ret = arch_clock->clk_set_parent(clk, parent);
+ if (ret == 0) {
+ (*clk->recalc)(clk);
+ if (clk->flags & RATE_PROPAGATES)
+ propagate_rate(clk);
+ }
+ }
+
spin_unlock_irqrestore(&clockfw_lock, flags);
return ret;
@@ -256,8 +272,6 @@ void followparent_recalc(struct clk *clk)
return;
clk->rate = clk->parent->rate;
- if (unlikely(clk->flags & RATE_PROPAGATES))
- propagate_rate(clk);
}
/* Propagate rate to children */
@@ -271,8 +285,11 @@ void propagate_rate(struct clk * tclk)
list_for_each_entry(clkp, &clocks, node) {
if (likely(clkp->parent != tclk))
continue;
- if (likely((u32)clkp->recalc))
+ if (likely((u32)clkp->recalc)) {
clkp->recalc(clkp);
+ if (clkp->flags & RATE_PROPAGATES)
+ propagate_rate(clkp);
+ }
}
}
@@ -288,8 +305,11 @@ void recalculate_root_clocks(void)
struct clk *clkp;
list_for_each_entry(clkp, &clocks, node) {
- if (unlikely(!clkp->parent) && likely((u32)clkp->recalc))
+ if (unlikely(!clkp->parent) && likely((u32)clkp->recalc)) {
clkp->recalc(clkp);
+ if (clkp->flags & RATE_PROPAGATES)
+ propagate_rate(clkp);
+ }
}
}
--
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