This works similarly to e.g. pwrdm_for_each(). Needed by enhanced usecounting debug functionality that will be added to pm-debug. Signed-off-by: Tero Kristo <t-kristo@xxxxxx> Cc: Paul Walmsley <paul@xxxxxxxxx> Cc: Kevin Hilman <khilman@xxxxxx> --- arch/arm/plat-omap/clock.c | 33 +++++++++++++++++++++++++++++++ arch/arm/plat-omap/include/plat/clock.h | 2 + 2 files changed, 35 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c index 62ec5c4..0a0775a 100644 --- a/arch/arm/plat-omap/clock.c +++ b/arch/arm/plat-omap/clock.c @@ -355,6 +355,39 @@ int omap_clk_enable_autoidle_all(void) return 0; } +/** + * omap_clk_for_each - call a function for each registered clock + * @fn: pointer to callback function + * @data: void * data to pass to callback function + * + * Call @fn for each registered clock, passing @data to each function. + * @fn must return 0 for success or any other value for failure. If + * @fn returns non-zero, the iteration across clocks will stop and + * the non-zero return value will be passed to the caller of + * omap_clk_for_each(). @fn is called with clockfw_lock held. + */ +int omap_clk_for_each(int (*fn)(struct clk *clk, void *user), void *user) +{ + struct clk *c; + unsigned long flags; + int ret = 0; + + if (!fn) + return -EINVAL; + + spin_lock_irqsave(&clockfw_lock, flags); + + list_for_each_entry(c, &clocks, node) { + ret = fn(c, user); + if (ret) + break; + } + + spin_unlock_irqrestore(&clockfw_lock, flags); + + return ret; +} + int omap_clk_disable_autoidle_all(void) { struct clk *c; diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h index d0ef57c..998947e 100644 --- a/arch/arm/plat-omap/include/plat/clock.h +++ b/arch/arm/plat-omap/include/plat/clock.h @@ -294,6 +294,8 @@ extern void propagate_rate(struct clk *clk); extern void recalculate_root_clocks(void); extern unsigned long followparent_recalc(struct clk *clk); extern void clk_enable_init_clocks(void); +extern int omap_clk_for_each(int (*fn)(struct clk *clk, void *user), + void *user); unsigned long omap_fixed_divisor_recalc(struct clk *clk); extern struct clk *omap_clk_get_by_name(const char *name); extern int omap_clk_enable_autoidle_all(void); -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html