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OMAP2 clock: APLL code shouldn't rely on static clocks in its local namespace

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Similar to the previous patch, the APLL code relied on the presence of the
static struct clks in its own namespace.  The APLL code didn't use them for
validation, however - it adjusted its own internal state depending on
the struct clk * that called it.  Now that static struct clks are
leaving the clock24xx.c namespace, use a more durable method: split the
omap2_clk_fixed_enable() function into omap2_clk_apll96_enable() and
omap2_clk_apll54_enable().  They still share a disable function.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
Paul Walmsley 2009-12-08 16:18:46 -07:00 committed by paul
parent ebd893ded2
commit 06b16939a3
2 changed files with 25 additions and 14 deletions
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35
arch/arm/mach-omap2/clock24xx.c
View file

@ -42,7 +42,8 @@
#include "cm-regbits-24xx.h"
static const struct clkops clkops_oscck;
static const struct clkops clkops_fixed;
static const struct clkops clkops_apll96;
static const struct clkops clkops_apll54;
static void omap2430_clk_i2chs_find_idlest(struct clk *clk,
void __iomem **idlest_reg,
@ -338,7 +339,7 @@ static void omap2_sys_clk_recalc(struct clk * clk)
#endif /* OLD_CK */
/* Enable an APLL if off */
static int omap2_clk_fixed_enable(struct clk *clk)
static int omap2_clk_apll_enable(struct clk *clk, u32 status_mask)
{
u32 cval, apll_mask;
@ -353,12 +354,7 @@ static int omap2_clk_fixed_enable(struct clk *clk)
cval |= apll_mask;
cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
if (clk == &apll96_ck)
cval = OMAP24XX_ST_96M_APLL;
else if (clk == &apll54_ck)
cval = OMAP24XX_ST_54M_APLL;
omap2_cm_wait_idlest(OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST), cval,
omap2_cm_wait_idlest(OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST), status_mask,
clk->name);
/*
@ -368,8 +364,18 @@ static int omap2_clk_fixed_enable(struct clk *clk)
return 0;
}
static int omap2_clk_apll96_enable(struct clk *clk)
{
return omap2_clk_apll_enable(clk, OMAP24XX_ST_96M_APLL);
}
static int omap2_clk_apll54_enable(struct clk *clk)
{
return omap2_clk_apll_enable(clk, OMAP24XX_ST_54M_APLL);
}
/* Stop APLL */
static void omap2_clk_fixed_disable(struct clk *clk)
static void omap2_clk_apll_disable(struct clk *clk)
{
u32 cval;
@ -378,9 +384,14 @@ static void omap2_clk_fixed_disable(struct clk *clk)
cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
}
static const struct clkops clkops_fixed = {
.enable = &omap2_clk_fixed_enable,
.disable = &omap2_clk_fixed_disable,
static const struct clkops clkops_apll96 = {
.enable = &omap2_clk_apll96_enable,
.disable = &omap2_clk_apll_disable,
};
static const struct clkops clkops_apll54 = {
.enable = &omap2_clk_apll54_enable,
.disable = &omap2_clk_apll_disable,
};
/*

4
arch/arm/mach-omap2/clock24xx.h
View file

@ -708,7 +708,7 @@ static struct clk dpll_ck = {
static struct clk apll96_ck = {
.name = "apll96_ck",
.ops = &clkops_fixed,
.ops = &clkops_apll96,
.parent = &sys_ck,
.rate = 96000000,
.flags = RATE_FIXED | ENABLE_ON_INIT,
@ -719,7 +719,7 @@ static struct clk apll96_ck = {
static struct clk apll54_ck = {
.name = "apll54_ck",
.ops = &clkops_fixed,
.ops = &clkops_apll54,
.parent = &sys_ck,
.rate = 54000000,
.flags = RATE_FIXED | ENABLE_ON_INIT,