diff options
author | Paul Walmsley <paul@pwsan.com> | 2008-08-19 08:08:45 (GMT) |
---|---|---|
committer | Tony Lindgren <tony@atomide.com> | 2008-08-19 08:08:45 (GMT) |
commit | 333943ba9e1716a3751af82f2dcc7620b83091ed (patch) | |
tree | 8646e99605d9d1519ac2f93f9399d78b89490c68 /arch/arm/mach-omap2/clock.c | |
parent | d1b03f615ae7ede957551dd26bf8929bdc2bb786 (diff) | |
download | linux-fsl-qoriq-333943ba9e1716a3751af82f2dcc7620b83091ed.tar.xz |
ARM: OMAP2: Clockdomain: Integrate OMAP3 clocks with clockdomain code
This patch integrates the OMAP3 clock tree with the clockdomain code.
This patch:
- marks OMAP34xx clocks with their corresponding clockdomain.
- adds code to convert the clockdomain name to a clockdomain pointer in the
struct clk during clk_register().
- modifies OMAP2 clock usecounting to call into the clockdomain code
when clocks are enabled or disabled.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/clock.c')
-rw-r--r-- | arch/arm/mach-omap2/clock.c | 46 |
1 files changed, 42 insertions, 4 deletions
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index 1d891e4..aa9b373 100644 --- a/arch/arm/mach-omap2/clock.c +++ b/arch/arm/mach-omap2/clock.c @@ -26,6 +26,7 @@ #include <asm/io.h> #include <mach/clock.h> +#include <mach/clockdomain.h> #include <mach/sram.h> #include <mach/cpu.h> #include <asm/div64.h> @@ -62,10 +63,36 @@ u8 cpu_mask; /*------------------------------------------------------------------------- - * Omap2 specific clock functions + * OMAP2/3 specific clock functions *-------------------------------------------------------------------------*/ /** + * omap2_init_clk_clkdm - look up a clockdomain name, store pointer in clk + * @clk: OMAP clock struct ptr to use + * + * Convert a clockdomain name stored in a struct clk 'clk' into a + * clockdomain pointer, and save it into the struct clk. Intended to be + * called during clk_register(). No return value. + */ +void omap2_init_clk_clkdm(struct clk *clk) +{ + struct clockdomain *clkdm; + + if (!clk->clkdm_name) + return; + + clkdm = clkdm_lookup(clk->clkdm_name); + if (clkdm) { + pr_debug("clock: associated clk %s to clkdm %s\n", + clk->name, clk->clkdm_name); + clk->clkdm = clkdm; + } else { + pr_debug("clock: could not associate clk %s to " + "clkdm %s\n", clk->name, clk->clkdm_name); + } +} + +/** * omap2_init_clksel_parent - set a clksel clk's parent field from the hardware * @clk: OMAP clock struct ptr to use * @@ -308,6 +335,9 @@ void omap2_clk_disable(struct clk *clk) _omap2_clk_disable(clk); if (likely((u32)clk->parent)) omap2_clk_disable(clk->parent); + if (clk->clkdm) + omap2_clkdm_clk_disable(clk->clkdm, clk); + } } @@ -324,11 +354,19 @@ int omap2_clk_enable(struct clk *clk) return ret; } + if (clk->clkdm) + omap2_clkdm_clk_enable(clk->clkdm, clk); + ret = _omap2_clk_enable(clk); - if (unlikely(ret != 0) && clk->parent) { - omap2_clk_disable(clk->parent); - clk->usecount--; + if (unlikely(ret != 0)) { + if (clk->clkdm) + omap2_clkdm_clk_disable(clk->clkdm, clk); + + if (clk->parent) { + omap2_clk_disable(clk->parent); + clk->usecount--; + } } } |