diff options
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r-- | arch/arm/mach-omap2/clock.c | 88 |
1 files changed, 46 insertions, 42 deletions
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index d3ebb74873f8..0d54fde5b455 100644 --- a/arch/arm/mach-omap2/clock.c +++ b/arch/arm/mach-omap2/clock.c @@ -42,6 +42,51 @@ u8 cpu_mask; * OMAP2/3/4 specific clock functions *-------------------------------------------------------------------------*/ +/* Private functions */ + +/** + * _omap2_module_wait_ready - wait for an OMAP module to leave IDLE + * @clk: struct clk * belonging to the module + * + * If the necessary clocks for the OMAP hardware IP block that + * corresponds to clock @clk are enabled, then wait for the module to + * indicate readiness (i.e., to leave IDLE). This code does not + * belong in the clock code and will be moved in the medium term to + * module-dependent code. No return value. + */ +static void _omap2_module_wait_ready(struct clk *clk) +{ + void __iomem *companion_reg, *idlest_reg; + u8 other_bit, idlest_bit; + + /* Not all modules have multiple clocks that their IDLEST depends on */ + if (clk->ops->find_companion) { + clk->ops->find_companion(clk, &companion_reg, &other_bit); + if (!(__raw_readl(companion_reg) & (1 << other_bit))) + return; + } + + clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit); + + omap2_cm_wait_idlest(idlest_reg, (1 << idlest_bit), clk->name); +} + +/* Enables clock without considering parent dependencies or use count + * REVISIT: Maybe change this to use clk->enable like on omap1? + */ +static int _omap2_clk_enable(struct clk *clk) +{ + return clk->ops->enable(clk); +} + +/* Disables clock without considering parent dependencies or use count */ +static void _omap2_clk_disable(struct clk *clk) +{ + clk->ops->disable(clk); +} + +/* Public functions */ + /** * omap2xxx_clk_commit - commit clock parent/rate changes in hardware * @clk: struct clk * @@ -149,33 +194,6 @@ void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg, *idlest_bit = clk->enable_bit; } -/** - * omap2_module_wait_ready - wait for an OMAP module to leave IDLE - * @clk: struct clk * belonging to the module - * - * If the necessary clocks for the OMAP hardware IP block that - * corresponds to clock @clk are enabled, then wait for the module to - * indicate readiness (i.e., to leave IDLE). This code does not - * belong in the clock code and will be moved in the medium term to - * module-dependent code. No return value. - */ -static void omap2_module_wait_ready(struct clk *clk) -{ - void __iomem *companion_reg, *idlest_reg; - u8 other_bit, idlest_bit; - - /* Not all modules have multiple clocks that their IDLEST depends on */ - if (clk->ops->find_companion) { - clk->ops->find_companion(clk, &companion_reg, &other_bit); - if (!(__raw_readl(companion_reg) & (1 << other_bit))) - return; - } - - clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit); - - omap2_cm_wait_idlest(idlest_reg, (1 << idlest_bit), clk->name); -} - int omap2_dflt_clk_enable(struct clk *clk) { u32 v; @@ -195,7 +213,7 @@ int omap2_dflt_clk_enable(struct clk *clk) v = __raw_readl(clk->enable_reg); /* OCP barrier */ if (clk->ops->find_idlest) - omap2_module_wait_ready(clk); + _omap2_module_wait_ready(clk); return 0; } @@ -235,20 +253,6 @@ const struct clkops clkops_omap2_dflt = { .disable = omap2_dflt_clk_disable, }; -/* Enables clock without considering parent dependencies or use count - * REVISIT: Maybe change this to use clk->enable like on omap1? - */ -static int _omap2_clk_enable(struct clk *clk) -{ - return clk->ops->enable(clk); -} - -/* Disables clock without considering parent dependencies or use count */ -static void _omap2_clk_disable(struct clk *clk) -{ - clk->ops->disable(clk); -} - void omap2_clk_disable(struct clk *clk) { if (clk->usecount > 0 && !(--clk->usecount)) { |