diff options
| -rw-r--r-- | arch/arm/mach-omap2/clockdomain.c | 110 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/pm34xx.c | 3 |
2 files changed, 15 insertions, 98 deletions
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c index 5d80cb897489..6fb61b1a0d46 100644 --- a/arch/arm/mach-omap2/clockdomain.c +++ b/arch/arm/mach-omap2/clockdomain.c @@ -258,97 +258,6 @@ static void _omap2_clkdm_set_hwsup(struct clockdomain *clkdm, int enable) } -/** - * _init_wkdep_usecount - initialize wkdep usecounts to match hardware - * @clkdm: clockdomain to initialize wkdep usecounts - * - * Initialize the wakeup dependency usecount variables for clockdomain @clkdm. - * If a wakeup dependency is present in the hardware, the usecount will be - * set to 1; otherwise, it will be set to 0. Software should clear all - * software wakeup dependencies prior to calling this function if it wishes - * to ensure that all usecounts start at 0. No return value. - */ -static void _init_wkdep_usecount(struct clockdomain *clkdm) -{ - u32 v; - struct clkdm_dep *cd; - - if (!clkdm->wkdep_srcs) - return; - - for (cd = clkdm->wkdep_srcs; cd->clkdm_name; cd++) { - if (!omap_chip_is(cd->omap_chip)) - continue; - - if (!cd->clkdm && cd->clkdm_name) - cd->clkdm = _clkdm_lookup(cd->clkdm_name); - - if (!cd->clkdm) { - WARN(!cd->clkdm, "clockdomain: %s: wkdep clkdm %s not " - "found\n", clkdm->name, cd->clkdm_name); - continue; - } - - v = prm_read_mod_bits_shift(clkdm->pwrdm.ptr->prcm_offs, - PM_WKDEP, - (1 << cd->clkdm->dep_bit)); - - if (v) - pr_debug("clockdomain: %s: wakeup dependency already " - "set to wake up when %s wakes\n", - clkdm->name, cd->clkdm->name); - - atomic_set(&cd->wkdep_usecount, (v) ? 1 : 0); - } -} - -/** - * _init_sleepdep_usecount - initialize sleepdep usecounts to match hardware - * @clkdm: clockdomain to initialize sleepdep usecounts - * - * Initialize the sleep dependency usecount variables for clockdomain @clkdm. - * If a sleep dependency is present in the hardware, the usecount will be - * set to 1; otherwise, it will be set to 0. Software should clear all - * software sleep dependencies prior to calling this function if it wishes - * to ensure that all usecounts start at 0. No return value. - */ -static void _init_sleepdep_usecount(struct clockdomain *clkdm) -{ - u32 v; - struct clkdm_dep *cd; - - if (!cpu_is_omap34xx()) - return; - - if (!clkdm->sleepdep_srcs) - return; - - for (cd = clkdm->sleepdep_srcs; cd->clkdm_name; cd++) { - if (!omap_chip_is(cd->omap_chip)) - continue; - - if (!cd->clkdm && cd->clkdm_name) - cd->clkdm = _clkdm_lookup(cd->clkdm_name); - - if (!cd->clkdm) { - WARN(!cd->clkdm, "clockdomain: %s: sleepdep clkdm %s " - "not found\n", clkdm->name, cd->clkdm_name); - continue; - } - - v = prm_read_mod_bits_shift(clkdm->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP, - (1 << cd->clkdm->dep_bit)); - - if (v) - pr_debug("clockdomain: %s: sleep dependency already " - "set to prevent from idling until %s " - "idles\n", clkdm->name, cd->clkdm->name); - - atomic_set(&cd->sleepdep_usecount, (v) ? 1 : 0); - } -}; - /* Public functions */ /** @@ -379,12 +288,17 @@ void clkdm_init(struct clockdomain **clkdms, _autodep_lookup(autodep); /* - * Ensure that the *dep_usecount registers reflect the current - * state of the PRCM. + * Put all clockdomains into software-supervised mode; PM code + * should later enable hardware-supervised mode as appropriate */ list_for_each_entry(clkdm, &clkdm_list, node) { - _init_wkdep_usecount(clkdm); - _init_sleepdep_usecount(clkdm); + if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP) + omap2_clkdm_wakeup(clkdm); + else if (clkdm->flags & CLKDM_CAN_DISABLE_AUTO) + omap2_clkdm_deny_idle(clkdm); + + clkdm_clear_all_wkdeps(clkdm); + clkdm_clear_all_sleepdeps(clkdm); } } @@ -592,6 +506,9 @@ int clkdm_clear_all_wkdeps(struct clockdomain *clkdm) if (!omap_chip_is(cd->omap_chip)) continue; + if (!cd->clkdm && cd->clkdm_name) + cd->clkdm = _clkdm_lookup(cd->clkdm_name); + /* PRM accesses are slow, so minimize them */ mask |= 1 << cd->clkdm->dep_bit; atomic_set(&cd->wkdep_usecount, 0); @@ -752,6 +669,9 @@ int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm) if (!omap_chip_is(cd->omap_chip)) continue; + if (!cd->clkdm && cd->clkdm_name) + cd->clkdm = _clkdm_lookup(cd->clkdm_name); + /* PRM accesses are slow, so minimize them */ mask |= 1 << cd->clkdm->dep_bit; atomic_set(&cd->sleepdep_usecount, 0); diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index f5f1dbd3c17a..d2b940c7215d 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -949,9 +949,6 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused) */ static int __init clkdms_setup(struct clockdomain *clkdm, void *unused) { - clkdm_clear_all_wkdeps(clkdm); - clkdm_clear_all_sleepdeps(clkdm); - if (clkdm->flags & CLKDM_CAN_ENABLE_AUTO) omap2_clkdm_allow_idle(clkdm); else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP && |
