diff options
Diffstat (limited to 'arch/arm/mach-omap2/clockdomain.c')
-rw-r--r-- | arch/arm/mach-omap2/clockdomain.c | 439 |
1 files changed, 143 insertions, 296 deletions
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c index 58e42f7..ab87854 100644 --- a/arch/arm/mach-omap2/clockdomain.c +++ b/arch/arm/mach-omap2/clockdomain.c @@ -26,17 +26,8 @@ #include <linux/bitops.h> -#include "prm2xxx_3xxx.h" -#include "prm-regbits-24xx.h" -#include "cm2xxx_3xxx.h" -#include "cm-regbits-24xx.h" -#include "cminst44xx.h" -#include "prcm44xx.h" - #include <plat/clock.h> -#include "powerdomain.h" #include "clockdomain.h" -#include <plat/prcm.h> /* clkdm_list contains all registered struct clockdomains */ static LIST_HEAD(clkdm_list); @@ -44,6 +35,7 @@ static LIST_HEAD(clkdm_list); /* array of clockdomain deps to be added/removed when clkdm in hwsup mode */ static struct clkdm_autodep *autodeps; +static struct clkdm_ops *arch_clkdm; /* Private functions */ @@ -177,11 +169,11 @@ static void _autodep_lookup(struct clkdm_autodep *autodep) * XXX autodeps are deprecated and should be removed at the earliest * opportunity */ -static void _clkdm_add_autodeps(struct clockdomain *clkdm) +void _clkdm_add_autodeps(struct clockdomain *clkdm) { struct clkdm_autodep *autodep; - if (!autodeps) + if (!autodeps || clkdm->flags & CLKDM_NO_AUTODEPS) return; for (autodep = autodeps; autodep->clkdm.ptr; autodep++) { @@ -211,11 +203,11 @@ static void _clkdm_add_autodeps(struct clockdomain *clkdm) * XXX autodeps are deprecated and should be removed at the earliest * opportunity */ -static void _clkdm_del_autodeps(struct clockdomain *clkdm) +void _clkdm_del_autodeps(struct clockdomain *clkdm) { struct clkdm_autodep *autodep; - if (!autodeps) + if (!autodeps || clkdm->flags & CLKDM_NO_AUTODEPS) return; for (autodep = autodeps; autodep->clkdm.ptr; autodep++) { @@ -235,55 +227,29 @@ static void _clkdm_del_autodeps(struct clockdomain *clkdm) } /** - * _enable_hwsup - place a clockdomain into hardware-supervised idle - * @clkdm: struct clockdomain * - * - * Place the clockdomain into hardware-supervised idle mode. No return - * value. + * _resolve_clkdm_deps() - resolve clkdm_names in @clkdm_deps to clkdms + * @clkdm: clockdomain that we are resolving dependencies for + * @clkdm_deps: ptr to array of struct clkdm_deps to resolve * - * XXX Should this return an error if the clockdomain does not support - * hardware-supervised idle mode? - */ -static void _enable_hwsup(struct clockdomain *clkdm) -{ - if (cpu_is_omap24xx()) - omap2xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, - clkdm->clktrctrl_mask); - else if (cpu_is_omap34xx()) - omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, - clkdm->clktrctrl_mask); - else if (cpu_is_omap44xx()) - return omap4_cminst_clkdm_enable_hwsup(clkdm->prcm_partition, - clkdm->cm_inst, - clkdm->clkdm_offs); - else - BUG(); -} - -/** - * _disable_hwsup - place a clockdomain into software-supervised idle - * @clkdm: struct clockdomain * - * - * Place the clockdomain @clkdm into software-supervised idle mode. + * Iterates through @clkdm_deps, looking up the struct clockdomain named by + * clkdm_name and storing the clockdomain pointer in the struct clkdm_dep. * No return value. - * - * XXX Should this return an error if the clockdomain does not support - * software-supervised idle mode? */ -static void _disable_hwsup(struct clockdomain *clkdm) +static void _resolve_clkdm_deps(struct clockdomain *clkdm, + struct clkdm_dep *clkdm_deps) { - if (cpu_is_omap24xx()) - omap2xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, - clkdm->clktrctrl_mask); - else if (cpu_is_omap34xx()) - omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, - clkdm->clktrctrl_mask); - else if (cpu_is_omap44xx()) - return omap4_cminst_clkdm_disable_hwsup(clkdm->prcm_partition, - clkdm->cm_inst, - clkdm->clkdm_offs); - else - BUG(); + struct clkdm_dep *cd; + + for (cd = clkdm_deps; cd && cd->clkdm_name; cd++) { + if (!omap_chip_is(cd->omap_chip)) + continue; + if (cd->clkdm) + continue; + cd->clkdm = _clkdm_lookup(cd->clkdm_name); + + WARN(!cd->clkdm, "clockdomain: %s: could not find clkdm %s while resolving dependencies - should never happen", + clkdm->name, cd->clkdm_name); + } } /* Public functions */ @@ -292,6 +258,7 @@ static void _disable_hwsup(struct clockdomain *clkdm) * clkdm_init - set up the clockdomain layer * @clkdms: optional pointer to an array of clockdomains to register * @init_autodeps: optional pointer to an array of autodeps to register + * @custom_funcs: func pointers for arch specfic implementations * * Set up internal state. If a pointer to an array of clockdomains * @clkdms was supplied, loop through the list of clockdomains, @@ -300,12 +267,18 @@ static void _disable_hwsup(struct clockdomain *clkdm) * @init_autodeps was provided, register those. No return value. */ void clkdm_init(struct clockdomain **clkdms, - struct clkdm_autodep *init_autodeps) + struct clkdm_autodep *init_autodeps, + struct clkdm_ops *custom_funcs) { struct clockdomain **c = NULL; struct clockdomain *clkdm; struct clkdm_autodep *autodep = NULL; + if (!custom_funcs) + WARN(1, "No custom clkdm functions registered\n"); + else + arch_clkdm = custom_funcs; + if (clkdms) for (c = clkdms; *c; c++) _clkdm_register(*c); @@ -321,11 +294,14 @@ void clkdm_init(struct clockdomain **clkdms, */ list_for_each_entry(clkdm, &clkdm_list, node) { if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP) - omap2_clkdm_wakeup(clkdm); + clkdm_wakeup(clkdm); else if (clkdm->flags & CLKDM_CAN_DISABLE_AUTO) - omap2_clkdm_deny_idle(clkdm); + clkdm_deny_idle(clkdm); + _resolve_clkdm_deps(clkdm, clkdm->wkdep_srcs); clkdm_clear_all_wkdeps(clkdm); + + _resolve_clkdm_deps(clkdm, clkdm->sleepdep_srcs); clkdm_clear_all_sleepdeps(clkdm); } } @@ -422,32 +398,32 @@ struct powerdomain *clkdm_get_pwrdm(struct clockdomain *clkdm) int clkdm_add_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) { struct clkdm_dep *cd; - - if (!cpu_is_omap24xx() && !cpu_is_omap34xx()) { - pr_err("clockdomain: %s/%s: %s: not yet implemented\n", - clkdm1->name, clkdm2->name, __func__); - return -EINVAL; - } + int ret = 0; if (!clkdm1 || !clkdm2) return -EINVAL; cd = _clkdm_deps_lookup(clkdm2, clkdm1->wkdep_srcs); - if (IS_ERR(cd)) { + if (IS_ERR(cd)) + ret = PTR_ERR(cd); + + if (!arch_clkdm || !arch_clkdm->clkdm_add_wkdep) + ret = -EINVAL; + + if (ret) { pr_debug("clockdomain: hardware cannot set/clear wake up of " "%s when %s wakes up\n", clkdm1->name, clkdm2->name); - return PTR_ERR(cd); + return ret; } if (atomic_inc_return(&cd->wkdep_usecount) == 1) { pr_debug("clockdomain: hardware will wake up %s when %s wakes " "up\n", clkdm1->name, clkdm2->name); - omap2_prm_set_mod_reg_bits((1 << clkdm2->dep_bit), - clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP); + ret = arch_clkdm->clkdm_add_wkdep(clkdm1, clkdm2); } - return 0; + return ret; } /** @@ -463,32 +439,32 @@ int clkdm_add_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) int clkdm_del_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) { struct clkdm_dep *cd; - - if (!cpu_is_omap24xx() && !cpu_is_omap34xx()) { - pr_err("clockdomain: %s/%s: %s: not yet implemented\n", - clkdm1->name, clkdm2->name, __func__); - return -EINVAL; - } + int ret = 0; if (!clkdm1 || !clkdm2) return -EINVAL; cd = _clkdm_deps_lookup(clkdm2, clkdm1->wkdep_srcs); - if (IS_ERR(cd)) { + if (IS_ERR(cd)) + ret = PTR_ERR(cd); + + if (!arch_clkdm || !arch_clkdm->clkdm_del_wkdep) + ret = -EINVAL; + + if (ret) { pr_debug("clockdomain: hardware cannot set/clear wake up of " "%s when %s wakes up\n", clkdm1->name, clkdm2->name); - return PTR_ERR(cd); + return ret; } if (atomic_dec_return(&cd->wkdep_usecount) == 0) { pr_debug("clockdomain: hardware will no longer wake up %s " "after %s wakes up\n", clkdm1->name, clkdm2->name); - omap2_prm_clear_mod_reg_bits((1 << clkdm2->dep_bit), - clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP); + ret = arch_clkdm->clkdm_del_wkdep(clkdm1, clkdm2); } - return 0; + return ret; } /** @@ -508,26 +484,26 @@ int clkdm_del_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) int clkdm_read_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) { struct clkdm_dep *cd; + int ret = 0; if (!clkdm1 || !clkdm2) return -EINVAL; - if (!cpu_is_omap24xx() && !cpu_is_omap34xx()) { - pr_err("clockdomain: %s/%s: %s: not yet implemented\n", - clkdm1->name, clkdm2->name, __func__); - return -EINVAL; - } - cd = _clkdm_deps_lookup(clkdm2, clkdm1->wkdep_srcs); - if (IS_ERR(cd)) { + if (IS_ERR(cd)) + ret = PTR_ERR(cd); + + if (!arch_clkdm || !arch_clkdm->clkdm_read_wkdep) + ret = -EINVAL; + + if (ret) { pr_debug("clockdomain: hardware cannot set/clear wake up of " "%s when %s wakes up\n", clkdm1->name, clkdm2->name); - return PTR_ERR(cd); + return ret; } /* XXX It's faster to return the atomic wkdep_usecount */ - return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP, - (1 << clkdm2->dep_bit)); + return arch_clkdm->clkdm_read_wkdep(clkdm1, clkdm2); } /** @@ -542,33 +518,13 @@ int clkdm_read_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) */ int clkdm_clear_all_wkdeps(struct clockdomain *clkdm) { - struct clkdm_dep *cd; - u32 mask = 0; - - if (!cpu_is_omap24xx() && !cpu_is_omap34xx()) { - pr_err("clockdomain: %s: %s: not yet implemented\n", - clkdm->name, __func__); - return -EINVAL; - } - if (!clkdm) return -EINVAL; - for (cd = clkdm->wkdep_srcs; cd && 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); - - /* PRM accesses are slow, so minimize them */ - mask |= 1 << cd->clkdm->dep_bit; - atomic_set(&cd->wkdep_usecount, 0); - } - - omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs, PM_WKDEP); + if (!arch_clkdm || !arch_clkdm->clkdm_clear_all_wkdeps) + return -EINVAL; - return 0; + return arch_clkdm->clkdm_clear_all_wkdeps(clkdm); } /** @@ -586,31 +542,33 @@ int clkdm_clear_all_wkdeps(struct clockdomain *clkdm) int clkdm_add_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) { struct clkdm_dep *cd; - - if (!cpu_is_omap34xx()) - return -EINVAL; + int ret = 0; if (!clkdm1 || !clkdm2) return -EINVAL; cd = _clkdm_deps_lookup(clkdm2, clkdm1->sleepdep_srcs); - if (IS_ERR(cd)) { + if (IS_ERR(cd)) + ret = PTR_ERR(cd); + + if (!arch_clkdm || !arch_clkdm->clkdm_add_sleepdep) + ret = -EINVAL; + + if (ret) { pr_debug("clockdomain: hardware cannot set/clear sleep " "dependency affecting %s from %s\n", clkdm1->name, clkdm2->name); - return PTR_ERR(cd); + return ret; } if (atomic_inc_return(&cd->sleepdep_usecount) == 1) { pr_debug("clockdomain: will prevent %s from sleeping if %s " "is active\n", clkdm1->name, clkdm2->name); - omap2_cm_set_mod_reg_bits((1 << clkdm2->dep_bit), - clkdm1->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP); + ret = arch_clkdm->clkdm_add_sleepdep(clkdm1, clkdm2); } - return 0; + return ret; } /** @@ -628,19 +586,23 @@ int clkdm_add_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) int clkdm_del_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) { struct clkdm_dep *cd; - - if (!cpu_is_omap34xx()) - return -EINVAL; + int ret = 0; if (!clkdm1 || !clkdm2) return -EINVAL; cd = _clkdm_deps_lookup(clkdm2, clkdm1->sleepdep_srcs); - if (IS_ERR(cd)) { + if (IS_ERR(cd)) + ret = PTR_ERR(cd); + + if (!arch_clkdm || !arch_clkdm->clkdm_del_sleepdep) + ret = -EINVAL; + + if (ret) { pr_debug("clockdomain: hardware cannot set/clear sleep " "dependency affecting %s from %s\n", clkdm1->name, clkdm2->name); - return PTR_ERR(cd); + return ret; } if (atomic_dec_return(&cd->sleepdep_usecount) == 0) { @@ -648,12 +610,10 @@ int clkdm_del_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) "sleeping if %s is active\n", clkdm1->name, clkdm2->name); - omap2_cm_clear_mod_reg_bits((1 << clkdm2->dep_bit), - clkdm1->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP); + ret = arch_clkdm->clkdm_del_sleepdep(clkdm1, clkdm2); } - return 0; + return ret; } /** @@ -675,25 +635,27 @@ int clkdm_del_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) int clkdm_read_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) { struct clkdm_dep *cd; - - if (!cpu_is_omap34xx()) - return -EINVAL; + int ret = 0; if (!clkdm1 || !clkdm2) return -EINVAL; cd = _clkdm_deps_lookup(clkdm2, clkdm1->sleepdep_srcs); - if (IS_ERR(cd)) { + if (IS_ERR(cd)) + ret = PTR_ERR(cd); + + if (!arch_clkdm || !arch_clkdm->clkdm_read_sleepdep) + ret = -EINVAL; + + if (ret) { pr_debug("clockdomain: hardware cannot set/clear sleep " "dependency affecting %s from %s\n", clkdm1->name, clkdm2->name); - return PTR_ERR(cd); + return ret; } /* XXX It's faster to return the atomic sleepdep_usecount */ - return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP, - (1 << clkdm2->dep_bit)); + return arch_clkdm->clkdm_read_sleepdep(clkdm1, clkdm2); } /** @@ -708,35 +670,17 @@ int clkdm_read_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2) */ int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm) { - struct clkdm_dep *cd; - u32 mask = 0; - - if (!cpu_is_omap34xx()) - return -EINVAL; - if (!clkdm) return -EINVAL; - for (cd = clkdm->sleepdep_srcs; cd && 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); - - /* PRM accesses are slow, so minimize them */ - mask |= 1 << cd->clkdm->dep_bit; - atomic_set(&cd->sleepdep_usecount, 0); - } - - omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs, - OMAP3430_CM_SLEEPDEP); + if (!arch_clkdm || !arch_clkdm->clkdm_clear_all_sleepdeps) + return -EINVAL; - return 0; + return arch_clkdm->clkdm_clear_all_sleepdeps(clkdm); } /** - * omap2_clkdm_sleep - force clockdomain sleep transition + * clkdm_sleep - force clockdomain sleep transition * @clkdm: struct clockdomain * * * Instruct the CM to force a sleep transition on the specified @@ -744,7 +688,7 @@ int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm) * clockdomain does not support software-initiated sleep; 0 upon * success. */ -int omap2_clkdm_sleep(struct clockdomain *clkdm) +int clkdm_sleep(struct clockdomain *clkdm) { if (!clkdm) return -EINVAL; @@ -755,33 +699,16 @@ int omap2_clkdm_sleep(struct clockdomain *clkdm) return -EINVAL; } - pr_debug("clockdomain: forcing sleep on %s\n", clkdm->name); - - if (cpu_is_omap24xx()) { - - omap2_cm_set_mod_reg_bits(OMAP24XX_FORCESTATE_MASK, - clkdm->pwrdm.ptr->prcm_offs, OMAP2_PM_PWSTCTRL); - - } else if (cpu_is_omap34xx()) { - - omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs, - clkdm->clktrctrl_mask); - - } else if (cpu_is_omap44xx()) { - - omap4_cminst_clkdm_force_sleep(clkdm->prcm_partition, - clkdm->cm_inst, - clkdm->clkdm_offs); + if (!arch_clkdm || !arch_clkdm->clkdm_sleep) + return -EINVAL; - } else { - BUG(); - }; + pr_debug("clockdomain: forcing sleep on %s\n", clkdm->name); - return 0; + return arch_clkdm->clkdm_sleep(clkdm); } /** - * omap2_clkdm_wakeup - force clockdomain wakeup transition + * clkdm_wakeup - force clockdomain wakeup transition * @clkdm: struct clockdomain * * * Instruct the CM to force a wakeup transition on the specified @@ -789,7 +716,7 @@ int omap2_clkdm_sleep(struct clockdomain *clkdm) * clockdomain does not support software-controlled wakeup; 0 upon * success. */ -int omap2_clkdm_wakeup(struct clockdomain *clkdm) +int clkdm_wakeup(struct clockdomain *clkdm) { if (!clkdm) return -EINVAL; @@ -800,33 +727,16 @@ int omap2_clkdm_wakeup(struct clockdomain *clkdm) return -EINVAL; } - pr_debug("clockdomain: forcing wakeup on %s\n", clkdm->name); - - if (cpu_is_omap24xx()) { - - omap2_cm_clear_mod_reg_bits(OMAP24XX_FORCESTATE_MASK, - clkdm->pwrdm.ptr->prcm_offs, OMAP2_PM_PWSTCTRL); - - } else if (cpu_is_omap34xx()) { - - omap3xxx_cm_clkdm_force_wakeup(clkdm->pwrdm.ptr->prcm_offs, - clkdm->clktrctrl_mask); - - } else if (cpu_is_omap44xx()) { - - omap4_cminst_clkdm_force_wakeup(clkdm->prcm_partition, - clkdm->cm_inst, - clkdm->clkdm_offs); + if (!arch_clkdm || !arch_clkdm->clkdm_wakeup) + return -EINVAL; - } else { - BUG(); - }; + pr_debug("clockdomain: forcing wakeup on %s\n", clkdm->name); - return 0; + return arch_clkdm->clkdm_wakeup(clkdm); } /** - * omap2_clkdm_allow_idle - enable hwsup idle transitions for clkdm + * clkdm_allow_idle - enable hwsup idle transitions for clkdm * @clkdm: struct clockdomain * * * Allow the hardware to automatically switch the clockdomain @clkdm into @@ -835,7 +745,7 @@ int omap2_clkdm_wakeup(struct clockdomain *clkdm) * framework, wkdep/sleepdep autodependencies are added; this is so * device drivers can read and write to the device. No return value. */ -void omap2_clkdm_allow_idle(struct clockdomain *clkdm) +void clkdm_allow_idle(struct clockdomain *clkdm) { if (!clkdm) return; @@ -846,27 +756,18 @@ void omap2_clkdm_allow_idle(struct clockdomain *clkdm) return; } + if (!arch_clkdm || !arch_clkdm->clkdm_allow_idle) + return; + pr_debug("clockdomain: enabling automatic idle transitions for %s\n", clkdm->name); - /* - * XXX This should be removed once TI adds wakeup/sleep - * dependency code and data for OMAP4. - */ - if (cpu_is_omap44xx()) { - pr_err("clockdomain: %s: OMAP4 wakeup/sleep dependency support: not yet implemented\n", clkdm->name); - } else { - if (atomic_read(&clkdm->usecount) > 0) - _clkdm_add_autodeps(clkdm); - } - - _enable_hwsup(clkdm); - + arch_clkdm->clkdm_allow_idle(clkdm); pwrdm_clkdm_state_switch(clkdm); } /** - * omap2_clkdm_deny_idle - disable hwsup idle transitions for clkdm + * clkdm_deny_idle - disable hwsup idle transitions for clkdm * @clkdm: struct clockdomain * * * Prevent the hardware from automatically switching the clockdomain @@ -874,7 +775,7 @@ void omap2_clkdm_allow_idle(struct clockdomain *clkdm) * downstream clocks enabled in the clock framework, wkdep/sleepdep * autodependencies are removed. No return value. */ -void omap2_clkdm_deny_idle(struct clockdomain *clkdm) +void clkdm_deny_idle(struct clockdomain *clkdm) { if (!clkdm) return; @@ -885,28 +786,20 @@ void omap2_clkdm_deny_idle(struct clockdomain *clkdm) return; } + if (!arch_clkdm || !arch_clkdm->clkdm_deny_idle) + return; + pr_debug("clockdomain: disabling automatic idle transitions for %s\n", clkdm->name); - _disable_hwsup(clkdm); - - /* - * XXX This should be removed once TI adds wakeup/sleep - * dependency code and data for OMAP4. - */ - if (cpu_is_omap44xx()) { - pr_err("clockdomain: %s: OMAP4 wakeup/sleep dependency support: not yet implemented\n", clkdm->name); - } else { - if (atomic_read(&clkdm->usecount) > 0) - _clkdm_del_autodeps(clkdm); - } + arch_clkdm->clkdm_deny_idle(clkdm); } /* Clockdomain-to-clock framework interface code */ /** - * omap2_clkdm_clk_enable - add an enabled downstream clock to this clkdm + * clkdm_clk_enable - add an enabled downstream clock to this clkdm * @clkdm: struct clockdomain * * @clk: struct clk * of the enabled downstream clock * @@ -919,10 +812,8 @@ void omap2_clkdm_deny_idle(struct clockdomain *clkdm) * by on-chip processors. Returns -EINVAL if passed null pointers; * returns 0 upon success or if the clockdomain is in hwsup idle mode. */ -int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk) +int clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk) { - bool hwsup = false; - /* * XXX Rewrite this code to maintain a list of enabled * downstream clocks for debugging purposes? @@ -931,6 +822,9 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk) if (!clkdm || !clk) return -EINVAL; + if (!arch_clkdm || !arch_clkdm->clkdm_clk_enable) + return -EINVAL; + if (atomic_inc_return(&clkdm->usecount) > 1) return 0; @@ -939,31 +833,7 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk) pr_debug("clockdomain: clkdm %s: clk %s now enabled\n", clkdm->name, clk->name); - if (cpu_is_omap24xx() || cpu_is_omap34xx()) { - - if (!clkdm->clktrctrl_mask) - return 0; - - hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, - clkdm->clktrctrl_mask); - - } else if (cpu_is_omap44xx()) { - - hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition, - clkdm->cm_inst, - clkdm->clkdm_offs); - - } - - if (hwsup) { - /* Disable HW transitions when we are changing deps */ - _disable_hwsup(clkdm); - _clkdm_add_autodeps(clkdm); - _enable_hwsup(clkdm); - } else { - omap2_clkdm_wakeup(clkdm); - } - + arch_clkdm->clkdm_clk_enable(clkdm); pwrdm_wait_transition(clkdm->pwrdm.ptr); pwrdm_clkdm_state_switch(clkdm); @@ -971,7 +841,7 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk) } /** - * omap2_clkdm_clk_disable - remove an enabled downstream clock from this clkdm + * clkdm_clk_disable - remove an enabled downstream clock from this clkdm * @clkdm: struct clockdomain * * @clk: struct clk * of the disabled downstream clock * @@ -984,10 +854,8 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk) * is enabled; or returns 0 upon success or if the clockdomain is in * hwsup idle mode. */ -int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk) +int clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk) { - bool hwsup = false; - /* * XXX Rewrite this code to maintain a list of enabled * downstream clocks for debugging purposes? @@ -996,6 +864,9 @@ int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk) if (!clkdm || !clk) return -EINVAL; + if (!arch_clkdm || !arch_clkdm->clkdm_clk_disable) + return -EINVAL; + #ifdef DEBUG if (atomic_read(&clkdm->usecount) == 0) { WARN_ON(1); /* underflow */ @@ -1011,31 +882,7 @@ int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk) pr_debug("clockdomain: clkdm %s: clk %s now disabled\n", clkdm->name, clk->name); - if (cpu_is_omap24xx() || cpu_is_omap34xx()) { - - if (!clkdm->clktrctrl_mask) - return 0; - - hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, - clkdm->clktrctrl_mask); - - } else if (cpu_is_omap44xx()) { - - hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition, - clkdm->cm_inst, - clkdm->clkdm_offs); - - } - - if (hwsup) { - /* Disable HW transitions when we are changing deps */ - _disable_hwsup(clkdm); - _clkdm_del_autodeps(clkdm); - _enable_hwsup(clkdm); - } else { - omap2_clkdm_sleep(clkdm); - } - + arch_clkdm->clkdm_clk_disable(clkdm); pwrdm_clkdm_state_switch(clkdm); return 0; |