diff options
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/clk.c | 824 |
1 files changed, 412 insertions, 412 deletions
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 459ce9da13e0..0b3c914db1ca 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -37,11 +37,11 @@ static HLIST_HEAD(clk_root_list); static HLIST_HEAD(clk_orphan_list); static LIST_HEAD(clk_notifier_list); -static long clk_core_get_accuracy(struct clk_core *clk); -static unsigned long clk_core_get_rate(struct clk_core *clk); -static int clk_core_get_phase(struct clk_core *clk); -static bool clk_core_is_prepared(struct clk_core *clk); -static bool clk_core_is_enabled(struct clk_core *clk); +static long clk_core_get_accuracy(struct clk_core *core); +static unsigned long clk_core_get_rate(struct clk_core *core); +static int clk_core_get_phase(struct clk_core *core); +static bool clk_core_is_prepared(struct clk_core *core); +static bool clk_core_is_enabled(struct clk_core *core); static struct clk_core *clk_core_lookup(const char *name); /*** private data structures ***/ @@ -293,59 +293,59 @@ static const struct file_operations clk_dump_fops = { .release = single_release, }; -static int clk_debug_create_one(struct clk_core *clk, struct dentry *pdentry) +static int clk_debug_create_one(struct clk_core *core, struct dentry *pdentry) { struct dentry *d; int ret = -ENOMEM; - if (!clk || !pdentry) { + if (!core || !pdentry) { ret = -EINVAL; goto out; } - d = debugfs_create_dir(clk->name, pdentry); + d = debugfs_create_dir(core->name, pdentry); if (!d) goto out; - clk->dentry = d; + core->dentry = d; - d = debugfs_create_u32("clk_rate", S_IRUGO, clk->dentry, - (u32 *)&clk->rate); + d = debugfs_create_u32("clk_rate", S_IRUGO, core->dentry, + (u32 *)&core->rate); if (!d) goto err_out; - d = debugfs_create_u32("clk_accuracy", S_IRUGO, clk->dentry, - (u32 *)&clk->accuracy); + d = debugfs_create_u32("clk_accuracy", S_IRUGO, core->dentry, + (u32 *)&core->accuracy); if (!d) goto err_out; - d = debugfs_create_u32("clk_phase", S_IRUGO, clk->dentry, - (u32 *)&clk->phase); + d = debugfs_create_u32("clk_phase", S_IRUGO, core->dentry, + (u32 *)&core->phase); if (!d) goto err_out; - d = debugfs_create_x32("clk_flags", S_IRUGO, clk->dentry, - (u32 *)&clk->flags); + d = debugfs_create_x32("clk_flags", S_IRUGO, core->dentry, + (u32 *)&core->flags); if (!d) goto err_out; - d = debugfs_create_u32("clk_prepare_count", S_IRUGO, clk->dentry, - (u32 *)&clk->prepare_count); + d = debugfs_create_u32("clk_prepare_count", S_IRUGO, core->dentry, + (u32 *)&core->prepare_count); if (!d) goto err_out; - d = debugfs_create_u32("clk_enable_count", S_IRUGO, clk->dentry, - (u32 *)&clk->enable_count); + d = debugfs_create_u32("clk_enable_count", S_IRUGO, core->dentry, + (u32 *)&core->enable_count); if (!d) goto err_out; - d = debugfs_create_u32("clk_notifier_count", S_IRUGO, clk->dentry, - (u32 *)&clk->notifier_count); + d = debugfs_create_u32("clk_notifier_count", S_IRUGO, core->dentry, + (u32 *)&core->notifier_count); if (!d) goto err_out; - if (clk->ops->debug_init) { - ret = clk->ops->debug_init(clk->hw, clk->dentry); + if (core->ops->debug_init) { + ret = core->ops->debug_init(core->hw, core->dentry); if (ret) goto err_out; } @@ -354,31 +354,31 @@ static int clk_debug_create_one(struct clk_core *clk, struct dentry *pdentry) goto out; err_out: - debugfs_remove_recursive(clk->dentry); - clk->dentry = NULL; + debugfs_remove_recursive(core->dentry); + core->dentry = NULL; out: return ret; } /** * clk_debug_register - add a clk node to the debugfs clk tree - * @clk: the clk being added to the debugfs clk tree + * @core: the clk being added to the debugfs clk tree * * Dynamically adds a clk to the debugfs clk tree if debugfs has been * initialized. Otherwise it bails out early since the debugfs clk tree * will be created lazily by clk_debug_init as part of a late_initcall. */ -static int clk_debug_register(struct clk_core *clk) +static int clk_debug_register(struct clk_core *core) { int ret = 0; mutex_lock(&clk_debug_lock); - hlist_add_head(&clk->debug_node, &clk_debug_list); + hlist_add_head(&core->debug_node, &clk_debug_list); if (!inited) goto unlock; - ret = clk_debug_create_one(clk, rootdir); + ret = clk_debug_create_one(core, rootdir); unlock: mutex_unlock(&clk_debug_lock); @@ -387,18 +387,18 @@ unlock: /** * clk_debug_unregister - remove a clk node from the debugfs clk tree - * @clk: the clk being removed from the debugfs clk tree + * @core: the clk being removed from the debugfs clk tree * * Dynamically removes a clk and all it's children clk nodes from the * debugfs clk tree if clk->dentry points to debugfs created by * clk_debug_register in __clk_init. */ -static void clk_debug_unregister(struct clk_core *clk) +static void clk_debug_unregister(struct clk_core *core) { mutex_lock(&clk_debug_lock); - hlist_del_init(&clk->debug_node); - debugfs_remove_recursive(clk->dentry); - clk->dentry = NULL; + hlist_del_init(&core->debug_node); + debugfs_remove_recursive(core->dentry); + core->dentry = NULL; mutex_unlock(&clk_debug_lock); } @@ -429,7 +429,7 @@ EXPORT_SYMBOL_GPL(clk_debugfs_add_file); */ static int __init clk_debug_init(void) { - struct clk_core *clk; + struct clk_core *core; struct dentry *d; rootdir = debugfs_create_dir("clk", NULL); @@ -458,8 +458,8 @@ static int __init clk_debug_init(void) return -ENOMEM; mutex_lock(&clk_debug_lock); - hlist_for_each_entry(clk, &clk_debug_list, debug_node) - clk_debug_create_one(clk, rootdir); + hlist_for_each_entry(core, &clk_debug_list, debug_node) + clk_debug_create_one(core, rootdir); inited = 1; mutex_unlock(&clk_debug_lock); @@ -468,59 +468,59 @@ static int __init clk_debug_init(void) } late_initcall(clk_debug_init); #else -static inline int clk_debug_register(struct clk_core *clk) { return 0; } -static inline void clk_debug_reparent(struct clk_core *clk, +static inline int clk_debug_register(struct clk_core *core) { return 0; } +static inline void clk_debug_reparent(struct clk_core *core, struct clk_core *new_parent) { } -static inline void clk_debug_unregister(struct clk_core *clk) +static inline void clk_debug_unregister(struct clk_core *core) { } #endif /* caller must hold prepare_lock */ -static void clk_unprepare_unused_subtree(struct clk_core *clk) +static void clk_unprepare_unused_subtree(struct clk_core *core) { struct clk_core *child; lockdep_assert_held(&prepare_lock); - hlist_for_each_entry(child, &clk->children, child_node) + hlist_for_each_entry(child, &core->children, child_node) clk_unprepare_unused_subtree(child); - if (clk->prepare_count) + if (core->prepare_count) return; - if (clk->flags & CLK_IGNORE_UNUSED) + if (core->flags & CLK_IGNORE_UNUSED) return; - if (clk_core_is_prepared(clk)) { - trace_clk_unprepare(clk); - if (clk->ops->unprepare_unused) - clk->ops->unprepare_unused(clk->hw); - else if (clk->ops->unprepare) - clk->ops->unprepare(clk->hw); - trace_clk_unprepare_complete(clk); + if (clk_core_is_prepared(core)) { + trace_clk_unprepare(core); + if (core->ops->unprepare_unused) + core->ops->unprepare_unused(core->hw); + else if (core->ops->unprepare) + core->ops->unprepare(core->hw); + trace_clk_unprepare_complete(core); } } /* caller must hold prepare_lock */ -static void clk_disable_unused_subtree(struct clk_core *clk) +static void clk_disable_unused_subtree(struct clk_core *core) { struct clk_core *child; unsigned long flags; lockdep_assert_held(&prepare_lock); - hlist_for_each_entry(child, &clk->children, child_node) + hlist_for_each_entry(child, &core->children, child_node) clk_disable_unused_subtree(child); flags = clk_enable_lock(); - if (clk->enable_count) + if (core->enable_count) goto unlock_out; - if (clk->flags & CLK_IGNORE_UNUSED) + if (core->flags & CLK_IGNORE_UNUSED) goto unlock_out; /* @@ -528,13 +528,13 @@ static void clk_disable_unused_subtree(struct clk_core *clk) * sequence. call .disable_unused if available, otherwise fall * back to .disable */ - if (clk_core_is_enabled(clk)) { - trace_clk_disable(clk); - if (clk->ops->disable_unused) - clk->ops->disable_unused(clk->hw); - else if (clk->ops->disable) - clk->ops->disable(clk->hw); - trace_clk_disable_complete(clk); + if (clk_core_is_enabled(core)) { + trace_clk_disable(core); + if (core->ops->disable_unused) + core->ops->disable_unused(core->hw); + else if (core->ops->disable) + core->ops->disable(core->hw); + trace_clk_disable_complete(core); } unlock_out: @@ -551,7 +551,7 @@ __setup("clk_ignore_unused", clk_ignore_unused_setup); static int clk_disable_unused(void) { - struct clk_core *clk; + struct clk_core *core; if (clk_ignore_unused) { pr_warn("clk: Not disabling unused clocks\n"); @@ -560,17 +560,17 @@ static int clk_disable_unused(void) clk_prepare_lock(); - hlist_for_each_entry(clk, &clk_root_list, child_node) - clk_disable_unused_subtree(clk); + hlist_for_each_entry(core, &clk_root_list, child_node) + clk_disable_unused_subtree(core); - hlist_for_each_entry(clk, &clk_orphan_list, child_node) - clk_disable_unused_subtree(clk); + hlist_for_each_entry(core, &clk_orphan_list, child_node) + clk_disable_unused_subtree(core); - hlist_for_each_entry(clk, &clk_root_list, child_node) - clk_unprepare_unused_subtree(clk); + hlist_for_each_entry(core, &clk_root_list, child_node) + clk_unprepare_unused_subtree(core); - hlist_for_each_entry(clk, &clk_orphan_list, child_node) - clk_unprepare_unused_subtree(clk); + hlist_for_each_entry(core, &clk_orphan_list, child_node) + clk_unprepare_unused_subtree(core); clk_prepare_unlock(); @@ -608,18 +608,18 @@ struct clk *__clk_get_parent(struct clk *clk) } EXPORT_SYMBOL_GPL(__clk_get_parent); -static struct clk_core *clk_core_get_parent_by_index(struct clk_core *clk, +static struct clk_core *clk_core_get_parent_by_index(struct clk_core *core, u8 index) { - if (!clk || index >= clk->num_parents) + if (!core || index >= core->num_parents) return NULL; - else if (!clk->parents) - return clk_core_lookup(clk->parent_names[index]); - else if (!clk->parents[index]) - return clk->parents[index] = - clk_core_lookup(clk->parent_names[index]); + else if (!core->parents) + return clk_core_lookup(core->parent_names[index]); + else if (!core->parents[index]) + return core->parents[index] = + clk_core_lookup(core->parent_names[index]); else - return clk->parents[index]; + return core->parents[index]; } struct clk *clk_get_parent_by_index(struct clk *clk, u8 index) @@ -640,21 +640,21 @@ unsigned int __clk_get_enable_count(struct clk *clk) return !clk ? 0 : clk->core->enable_count; } -static unsigned long clk_core_get_rate_nolock(struct clk_core *clk) +static unsigned long clk_core_get_rate_nolock(struct clk_core *core) { unsigned long ret; - if (!clk) { + if (!core) { ret = 0; goto out; } - ret = clk->rate; + ret = core->rate; - if (clk->flags & CLK_IS_ROOT) + if (core->flags & CLK_IS_ROOT) goto out; - if (!clk->parent) + if (!core->parent) ret = 0; out: @@ -670,12 +670,12 @@ unsigned long __clk_get_rate(struct clk *clk) } EXPORT_SYMBOL_GPL(__clk_get_rate); -static unsigned long __clk_get_accuracy(struct clk_core *clk) +static unsigned long __clk_get_accuracy(struct clk_core *core) { - if (!clk) + if (!core) return 0; - return clk->accuracy; + return core->accuracy; } unsigned long __clk_get_flags(struct clk *clk) @@ -684,23 +684,23 @@ unsigned long __clk_get_flags(struct clk *clk) } EXPORT_SYMBOL_GPL(__clk_get_flags); -static bool clk_core_is_prepared(struct clk_core *clk) +static bool clk_core_is_prepared(struct clk_core *core) { int ret; - if (!clk) + if (!core) return false; /* * .is_prepared is optional for clocks that can prepare * fall back to software usage counter if it is missing */ - if (!clk->ops->is_prepared) { - ret = clk->prepare_count ? 1 : 0; + if (!core->ops->is_prepared) { + ret = core->prepare_count ? 1 : 0; goto out; } - ret = clk->ops->is_prepared(clk->hw); + ret = core->ops->is_prepared(core->hw); out: return !!ret; } @@ -713,23 +713,23 @@ bool __clk_is_prepared(struct clk *clk) return clk_core_is_prepared(clk->core); } -static bool clk_core_is_enabled(struct clk_core *clk) +static bool clk_core_is_enabled(struct clk_core *core) { int ret; - if (!clk) + if (!core) return false; /* * .is_enabled is only mandatory for clocks that gate * fall back to software usage counter if .is_enabled is missing */ - if (!clk->ops->is_enabled) { - ret = clk->enable_count ? 1 : 0; + if (!core->ops->is_enabled) { + ret = core->enable_count ? 1 : 0; goto out; } - ret = clk->ops->is_enabled(clk->hw); + ret = core->ops->is_enabled(core->hw); out: return !!ret; } @@ -744,15 +744,15 @@ bool __clk_is_enabled(struct clk *clk) EXPORT_SYMBOL_GPL(__clk_is_enabled); static struct clk_core *__clk_lookup_subtree(const char *name, - struct clk_core *clk) + struct clk_core *core) { struct clk_core *child; struct clk_core *ret; - if (!strcmp(clk->name, name)) - return clk; + if (!strcmp(core->name, name)) + return core; - hlist_for_each_entry(child, &clk->children, child_node) { + hlist_for_each_entry(child, &core->children, child_node) { ret = __clk_lookup_subtree(name, child); if (ret) return ret; @@ -853,7 +853,7 @@ struct clk *__clk_lookup(const char *name) return !core ? NULL : core->hw->clk; } -static void clk_core_get_boundaries(struct clk_core *clk, +static void clk_core_get_boundaries(struct clk_core *core, unsigned long *min_rate, unsigned long *max_rate) { @@ -862,10 +862,10 @@ static void clk_core_get_boundaries(struct clk_core *clk, *min_rate = 0; *max_rate = ULONG_MAX; - hlist_for_each_entry(clk_user, &clk->clks, clks_node) + hlist_for_each_entry(clk_user, &core->clks, clks_node) *min_rate = max(*min_rate, clk_user->min_rate); - hlist_for_each_entry(clk_user, &clk->clks, clks_node) + hlist_for_each_entry(clk_user, &core->clks, clks_node) *max_rate = min(*max_rate, clk_user->max_rate); } @@ -901,26 +901,26 @@ EXPORT_SYMBOL_GPL(__clk_mux_determine_rate_closest); /*** clk api ***/ -static void clk_core_unprepare(struct clk_core *clk) +static void clk_core_unprepare(struct clk_core *core) { - if (!clk) + if (!core) return; - if (WARN_ON(clk->prepare_count == 0)) + if (WARN_ON(core->prepare_count == 0)) return; - if (--clk->prepare_count > 0) + if (--core->prepare_count > 0) return; - WARN_ON(clk->enable_count > 0); + WARN_ON(core->enable_count > 0); - trace_clk_unprepare(clk); + trace_clk_unprepare(core); - if (clk->ops->unprepare) - clk->ops->unprepare(clk->hw); + if (core->ops->unprepare) + core->ops->unprepare(core->hw); - trace_clk_unprepare_complete(clk); - clk_core_unprepare(clk->parent); + trace_clk_unprepare_complete(core); + clk_core_unprepare(core->parent); } /** @@ -945,32 +945,32 @@ void clk_unprepare(struct clk *clk) } EXPORT_SYMBOL_GPL(clk_unprepare); -static int clk_core_prepare(struct clk_core *clk) +static int clk_core_prepare(struct clk_core *core) { int ret = 0; - if (!clk) + if (!core) return 0; - if (clk->prepare_count == 0) { - ret = clk_core_prepare(clk->parent); + if (core->prepare_count == 0) { + ret = clk_core_prepare(core->parent); if (ret) return ret; - trace_clk_prepare(clk); + trace_clk_prepare(core); - if (clk->ops->prepare) - ret = clk->ops->prepare(clk->hw); + if (core->ops->prepare) + ret = core->ops->prepare(core->hw); - trace_clk_prepare_complete(clk); + trace_clk_prepare_complete(core); if (ret) { - clk_core_unprepare(clk->parent); + clk_core_unprepare(core->parent); return ret; } } - clk->prepare_count++; + core->prepare_count++; return 0; } @@ -1002,25 +1002,25 @@ int clk_prepare(struct clk *clk) } EXPORT_SYMBOL_GPL(clk_prepare); -static void clk_core_disable(struct clk_core *clk) +static void clk_core_disable(struct clk_core *core) { - if (!clk) + if (!core) return; - if (WARN_ON(clk->enable_count == 0)) + if (WARN_ON(core->enable_count == 0)) return; - if (--clk->enable_count > 0) + if (--core->enable_count > 0) return; - trace_clk_disable(clk); + trace_clk_disable(core); - if (clk->ops->disable) - clk->ops->disable(clk->hw); + if (core->ops->disable) + core->ops->disable(core->hw); - trace_clk_disable_complete(clk); + trace_clk_disable_complete(core); - clk_core_disable(clk->parent); + clk_core_disable(core->parent); } static void __clk_disable(struct clk *clk) @@ -1056,36 +1056,36 @@ void clk_disable(struct clk *clk) } EXPORT_SYMBOL_GPL(clk_disable); -static int clk_core_enable(struct clk_core *clk) +static int clk_core_enable(struct clk_core *core) { int ret = 0; - if (!clk) + if (!core) return 0; - if (WARN_ON(clk->prepare_count == 0)) + if (WARN_ON(core->prepare_count == 0)) return -ESHUTDOWN; - if (clk->enable_count == 0) { - ret = clk_core_enable(clk->parent); + if (core->enable_count == 0) { + ret = clk_core_enable(core->parent); if (ret) return ret; - trace_clk_enable(clk); + trace_clk_enable(core); - if (clk->ops->enable) - ret = clk->ops->enable(clk->hw); + if (core->ops->enable) + ret = core->ops->enable(core->hw); - trace_clk_enable_complete(clk); + trace_clk_enable_complete(core); if (ret) { - clk_core_disable(clk->parent); + clk_core_disable(core->parent); return ret; } } - clk->enable_count++; + core->enable_count++; return 0; } @@ -1123,7 +1123,7 @@ int clk_enable(struct clk *clk) } EXPORT_SYMBOL_GPL(clk_enable); -static unsigned long clk_core_round_rate_nolock(struct clk_core *clk, +static unsigned long clk_core_round_rate_nolock(struct clk_core *core, unsigned long rate, unsigned long min_rate, unsigned long max_rate) @@ -1134,25 +1134,25 @@ static unsigned long clk_core_round_rate_nolock(struct clk_core *clk, lockdep_assert_held(&prepare_lock); - if (!clk) + if (!core) return 0; - parent = clk->parent; + parent = core->parent; if (parent) parent_rate = parent->rate; - if (clk->ops->determine_rate) { + if (core->ops->determine_rate) { parent_hw = parent ? parent->hw : NULL; - return clk->ops->determine_rate(clk->hw, rate, + return core->ops->determine_rate(core->hw, rate, min_rate, max_rate, &parent_rate, &parent_hw); - } else if (clk->ops->round_rate) - return clk->ops->round_rate(clk->hw, rate, &parent_rate); - else if (clk->flags & CLK_SET_RATE_PARENT) - return clk_core_round_rate_nolock(clk->parent, rate, min_rate, + } else if (core->ops->round_rate) + return core->ops->round_rate(core->hw, rate, &parent_rate); + else if (core->flags & CLK_SET_RATE_PARENT) + return clk_core_round_rate_nolock(core->parent, rate, min_rate, max_rate); else - return clk->rate; + return core->rate; } /** @@ -1224,7 +1224,7 @@ EXPORT_SYMBOL_GPL(clk_round_rate); /** * __clk_notify - call clk notifier chain - * @clk: struct clk * that is changing rate + * @core: clk that is changing rate * @msg: clk notifier type (see include/linux/clk.h) * @old_rate: old clk rate * @new_rate: new clk rate @@ -1236,7 +1236,7 @@ EXPORT_SYMBOL_GPL(clk_round_rate); * called if all went well, or NOTIFY_STOP or NOTIFY_BAD immediately if * a driver returns that. */ -static int __clk_notify(struct clk_core *clk, unsigned long msg, +static int __clk_notify(struct clk_core *core, unsigned long msg, unsigned long old_rate, unsigned long new_rate) { struct clk_notifier *cn; @@ -1247,7 +1247,7 @@ static int __clk_notify(struct clk_core *clk, unsigned long msg, cnd.new_rate = new_rate; list_for_each_entry(cn, &clk_notifier_list, node) { - if (cn->clk->core == clk) { + if (cn->clk->core == core) { cnd.clk = cn->clk; ret = srcu_notifier_call_chain(&cn->notifier_head, msg, &cnd); @@ -1259,7 +1259,7 @@ static int __clk_notify(struct clk_core *clk, unsigned long msg, /** * __clk_recalc_accuracies - * @clk: first clk in the subtree + * @core: first clk in the subtree * * Walks the subtree of clks starting with clk and recalculates accuracies as * it goes. Note that if a clk does not implement the .recalc_accuracy @@ -1268,35 +1268,35 @@ static int __clk_notify(struct clk_core *clk, unsigned long msg, * * Caller must hold prepare_lock. */ -static void __clk_recalc_accuracies(struct clk_core *clk) +static void __clk_recalc_accuracies(struct clk_core *core) { unsigned long parent_accuracy = 0; struct clk_core *child; lockdep_assert_held(&prepare_lock); - if (clk->parent) - parent_accuracy = clk->parent->accuracy; + if (core->parent) + parent_accuracy = core->parent->accuracy; - if (clk->ops->recalc_accuracy) - clk->accuracy = clk->ops->recalc_accuracy(clk->hw, + if (core->ops->recalc_accuracy) + core->accuracy = core->ops->recalc_accuracy(core->hw, parent_accuracy); else - clk->accuracy = parent_accuracy; + core->accuracy = parent_accuracy; - hlist_for_each_entry(child, &clk->children, child_node) + hlist_for_each_entry(child, &core->children, child_node) __clk_recalc_accuracies(child); } -static long clk_core_get_accuracy(struct clk_core *clk) +static long clk_core_get_accuracy(struct clk_core *core) { unsigned long accuracy; clk_prepare_lock(); - if (clk && (clk->flags & CLK_GET_ACCURACY_NOCACHE)) - __clk_recalc_accuracies(clk); + if (core && (core->flags & CLK_GET_ACCURACY_NOCACHE)) + __clk_recalc_accuracies(core); - accuracy = __clk_get_accuracy(clk); + accuracy = __clk_get_accuracy(core); clk_prepare_unlock(); return accuracy; @@ -1320,17 +1320,17 @@ long clk_get_accuracy(struct clk *clk) } EXPORT_SYMBOL_GPL(clk_get_accuracy); -static unsigned long clk_recalc(struct clk_core *clk, +static unsigned long clk_recalc(struct clk_core *core, unsigned long parent_rate) { - if (clk->ops->recalc_rate) - return clk->ops->recalc_rate(clk->hw, parent_rate); + if (core->ops->recalc_rate) + return core->ops->recalc_rate(core->hw, parent_rate); return parent_rate; } /** * __clk_recalc_rates - * @clk: first clk in the subtree + * @core: first clk in the subtree * @msg: notification type (see include/linux/clk.h) * * Walks the subtree of clks starting with clk and recalculates rates as it @@ -1342,7 +1342,7 @@ static unsigned long clk_recalc(struct clk_core *clk, * * Caller must hold prepare_lock. */ -static void __clk_recalc_rates(struct clk_core *clk, unsigned long msg) +static void __clk_recalc_rates(struct clk_core *core, unsigned long msg) { unsigned long old_rate; unsigned long parent_rate = 0; @@ -1350,34 +1350,34 @@ static void __clk_recalc_rates(struct clk_core *clk, unsigned long msg) lockdep_assert_held(&prepare_lock); - old_rate = clk->rate; + old_rate = core->rate; - if (clk->parent) - parent_rate = clk->parent->rate; + if (core->parent) + parent_rate = core->parent->rate; - clk->rate = clk_recalc(clk, parent_rate); + core->rate = clk_recalc(core, parent_rate); /* * ignore NOTIFY_STOP and NOTIFY_BAD return values for POST_RATE_CHANGE * & ABORT_RATE_CHANGE notifiers */ - if (clk->notifier_count && msg) - __clk_notify(clk, msg, old_rate, clk->rate); + if (core->notifier_count && msg) + __clk_notify(core, msg, old_rate, core->rate); - hlist_for_each_entry(child, &clk->children, child_node) + hlist_for_each_entry(child, &core->children, child_node) __clk_recalc_rates(child, msg); } -static unsigned long clk_core_get_rate(struct clk_core *clk) +static unsigned long clk_core_get_rate(struct clk_core *core) { unsigned long rate; clk_prepare_lock(); - if (clk && (clk->flags & CLK_GET_RATE_NOCACHE)) - __clk_recalc_rates(clk, 0); + if (core && (core->flags & CLK_GET_RATE_NOCACHE)) + __clk_recalc_rates(core, 0); - rate = clk_core_get_rate_nolock(clk); + rate = clk_core_get_rate_nolock(core); clk_prepare_unlock(); return rate; @@ -1400,15 +1400,15 @@ unsigned long clk_get_rate(struct clk *clk) } EXPORT_SYMBOL_GPL(clk_get_rate); -static int clk_fetch_parent_index(struct clk_core *clk, +static int clk_fetch_parent_index(struct clk_core *core, struct clk_core *parent) { int i; - if (!clk->parents) { - clk->parents = kcalloc(clk->num_parents, + if (!core->parents) { + core->parents = kcalloc(core->num_parents, sizeof(struct clk *), GFP_KERNEL); - if (!clk->parents) + if (!core->parents) return -ENOMEM; } @@ -1417,15 +1417,15 @@ static int clk_fetch_parent_index(struct clk_core *clk, * or if not yet cached, use string name comparison and cache * them now to avoid future calls to clk_core_lookup. */ - for (i = 0; i < clk->num_parents; i++) { - if (clk->parents[i] == parent) + for (i = 0; i < core->num_parents; i++) { + if (core->parents[i] == parent) return i; - if (clk->parents[i]) + if (core->parents[i]) continue; - if (!strcmp(clk->parent_names[i], parent->name)) { - clk->parents[i] = clk_core_lookup(parent->name); + if (!strcmp(core->parent_names[i], parent->name)) { + core->parents[i] = clk_core_lookup(parent->name); return i; } } @@ -1433,28 +1433,28 @@ static int clk_fetch_parent_index(struct clk_core *clk, return -EINVAL; } -static void clk_reparent(struct clk_core *clk, struct clk_core *new_parent) +static void clk_reparent(struct clk_core *core, struct clk_core *new_parent) { - hlist_del(&clk->child_node); + hlist_del(&core->child_node); if (new_parent) { /* avoid duplicate POST_RATE_CHANGE notifications */ - if (new_parent->new_child == clk) + if (new_parent->new_child == core) new_parent->new_child = NULL; - hlist_add_head(&clk->child_node, &new_parent->children); + hlist_add_head(&core->child_node, &new_parent->children); } else { - hlist_add_head(&clk->child_node, &clk_orphan_list); + hlist_add_head(&core->child_node, &clk_orphan_list); } - clk->parent = new_parent; + core->parent = new_parent; } -static struct clk_core *__clk_set_parent_before(struct clk_core *clk, +static struct clk_core *__clk_set_parent_before(struct clk_core *core, struct clk_core *parent) { unsigned long flags; - struct clk_core *old_parent = clk->parent; + struct clk_core *old_parent = core->parent; /* * Migrate prepare state between parents and prevent race with @@ -1473,15 +1473,15 @@ static struct clk_core *__clk_set_parent_before(struct clk_core *clk, * * See also: Comment for clk_set_parent() below. */ - if (clk->prepare_count) { + if (core->prepare_count) { clk_core_prepare(parent); clk_core_enable(parent); - clk_core_enable(clk); + clk_core_enable(core); } /* update the clk tree topology */ flags = clk_enable_lock(); - clk_reparent(clk, parent); + clk_reparent(core, parent); clk_enable_unlock(flags); return old_parent; @@ -1502,44 +1502,44 @@ static void __clk_set_parent_after(struct clk_core *core, } } -static int __clk_set_parent(struct clk_core *clk, struct clk_core *parent, +static int __clk_set_parent(struct clk_core *core, struct clk_core *parent, u8 p_index) { unsigned long flags; int ret = 0; struct clk_core *old_parent; - old_parent = __clk_set_parent_before(clk, parent); + old_parent = __clk_set_parent_before(core, parent); - trace_clk_set_parent(clk, parent); + trace_clk_set_parent(core, parent); /* change clock input source */ - if (parent && clk->ops->set_parent) - ret = clk->ops->set_parent(clk->hw, p_index); + if (parent && core->ops->set_parent) + ret = core->ops->set_parent(core->hw, p_index); - trace_clk_set_parent_complete(clk, parent); + trace_clk_set_parent_complete(core, parent); if (ret) { flags = clk_enable_lock(); - clk_reparent(clk, old_parent); + clk_reparent(core, old_parent); clk_enable_unlock(flags); - if (clk->prepare_count) { - clk_core_disable(clk); + if (core->prepare_count) { + clk_core_disable(core); clk_core_disable(parent); clk_core_unprepare(parent); } return ret; } - __clk_set_parent_after(clk, parent, old_parent); + __clk_set_parent_after(core, parent, old_parent); return 0; } /** * __clk_speculate_rates - * @clk: first clk in the subtree + * @core: first clk in the subtree * @parent_rate: the "future" rate of clk's parent * * Walks the subtree of clks starting with clk, speculating rates as it @@ -1553,7 +1553,7 @@ static int __clk_set_parent(struct clk_core *clk, struct clk_core *parent, * * Caller must hold prepare_lock. */ -static int __clk_speculate_rates(struct clk_core *clk, +static int __clk_speculate_rates(struct clk_core *core, unsigned long parent_rate) { struct clk_core *child; @@ -1562,19 +1562,19 @@ static int __clk_speculate_rates(struct clk_core *clk, lockdep_assert_held(&prepare_lock); - new_rate = clk_recalc(clk, parent_rate); + new_rate = clk_recalc(core, parent_rate); /* abort rate change if a driver returns NOTIFY_BAD or NOTIFY_STOP */ - if (clk->notifier_count) - ret = __clk_notify(clk, PRE_RATE_CHANGE, clk->rate, new_rate); + if (core->notifier_count) + ret = __clk_notify(core, PRE_RATE_CHANGE, core->rate, new_rate); if (ret & NOTIFY_STOP_MASK) { pr_debug("%s: clk notifier callback for clock %s aborted with error %d\n", - __func__, clk->name, ret); + __func__, core->name, ret); goto out; } - hlist_for_each_entry(child, &clk->children, child_node) { + hlist_for_each_entry(child, &core->children, child_node) { ret = __clk_speculate_rates(child, new_rate); if (ret & NOTIFY_STOP_MASK) break; @@ -1584,20 +1584,20 @@ out: return ret; } -static void clk_calc_subtree(struct clk_core *clk, unsigned long new_rate, +static void clk_calc_subtree(struct clk_core *core, unsigned long new_rate, struct clk_core *new_parent, u8 p_index) { struct clk_core *child; - clk->new_rate = new_rate; - clk->new_parent = new_parent; - clk->new_parent_index = p_index; + core->new_rate = new_rate; + core->new_parent = new_parent; + core->new_parent_index = p_index; /* include clk in new parent's PRE_RATE_CHANGE notifications */ - clk->new_child = NULL; - if (new_parent && new_parent != clk->parent) - new_parent->new_child = clk; + core->new_child = NULL; + if (new_parent && new_parent != core->parent) + new_parent->new_child = core; - hlist_for_each_entry(child, &clk->children, child_node) { + hlist_for_each_entry(child, &core->children, child_node) { child->new_rate = clk_recalc(child, new_rate); clk_calc_subtree(child, child->new_rate, NULL, 0); } @@ -1607,10 +1607,10 @@ static void clk_calc_subtree(struct clk_core *clk, unsigned long new_rate, * calculate the new rates returning the topmost clock that has to be * changed. */ -static struct clk_core *clk_calc_new_rates(struct clk_core *clk, +static struct clk_core *clk_calc_new_rates(struct clk_core *core, unsigned long rate) { - struct clk_core *top = clk; + struct clk_core *top = core; struct clk_core *old_parent, *parent; struct clk_hw *parent_hw; unsigned long best_parent_rate = 0; @@ -1621,20 +1621,20 @@ static struct clk_core *clk_calc_new_rates(struct clk_core *clk, long ret; /* sanity */ - if (IS_ERR_OR_NULL(clk)) + if (IS_ERR_OR_NULL(core)) return NULL; /* save parent rate, if it exists */ - parent = old_parent = clk->parent; + parent = old_parent = core->parent; if (parent) best_parent_rate = parent->rate; - clk_core_get_boundaries(clk, &min_rate, &max_rate); + clk_core_get_boundaries(core, &min_rate, &max_rate); /* find the closest rate and parent clk/rate */ - if (clk->ops->determine_rate) { + if (core->ops->determine_rate) { parent_hw = parent ? parent->hw : NULL; - ret = clk->ops->determine_rate(clk->hw, rate, + ret = core->ops->determine_rate(core->hw, rate, min_rate, max_rate, &best_parent_rate, @@ -1644,8 +1644,8 @@ static struct clk_core *clk_calc_new_rates(struct clk_core *clk, new_rate = ret; parent = parent_hw ? parent_hw->core : NULL; - } else if (clk->ops->round_rate) { - ret = clk->ops->round_rate(clk->hw, rate, + } else if (core->ops->round_rate) { + ret = core->ops->round_rate(core->hw, rate, &best_parent_rate); if (ret < 0) return NULL; @@ -1653,9 +1653,9 @@ static struct clk_core *clk_calc_new_rates(struct clk_core *clk, new_rate = ret; if (new_rate < min_rate || new_rate > max_rate) return NULL; - } else if (!parent || !(clk->flags & CLK_SET_RATE_PARENT)) { + } else if (!parent || !(core->flags & CLK_SET_RATE_PARENT)) { /* pass-through clock without adjustable parent */ - clk->new_rate = clk->rate; + core->new_rate = core->rate; return NULL; } else { /* pass-through clock with adjustable parent */ @@ -1666,28 +1666,28 @@ static struct clk_core *clk_calc_new_rates(struct clk_core *clk, /* some clocks must be gated to change parent */ if (parent != old_parent && - (clk->flags & CLK_SET_PARENT_GATE) && clk->prepare_count) { + (core->flags & CLK_SET_PARENT_GATE) && core->prepare_count) { pr_debug("%s: %s not gated but wants to reparent\n", - __func__, clk->name); + __func__, core->name); return NULL; } /* try finding the new parent index */ - if (parent && clk->num_parents > 1) { - p_index = clk_fetch_parent_index(clk, parent); + if (parent && core->num_parents > 1) { + p_index = clk_fetch_parent_index(core, parent); if (p_index < 0) { pr_debug("%s: clk %s can not be parent of clk %s\n", - __func__, parent->name, clk->name); + __func__, parent->name, core->name); return NULL; } } - if ((clk->flags & CLK_SET_RATE_PARENT) && parent && + if ((core->flags & CLK_SET_RATE_PARENT) && parent && best_parent_rate != parent->rate) top = clk_calc_new_rates(parent, best_parent_rate); out: - clk_calc_subtree(clk, new_rate, parent, p_index); + clk_calc_subtree(core, new_rate, parent, p_index); return top; } @@ -1697,33 +1697,33 @@ out: * so that in case of an error we can walk down the whole tree again and * abort the change. */ -static struct clk_core *clk_propagate_rate_change(struct clk_core *clk, +static struct clk_core *clk_propagate_rate_change(struct clk_core *core, unsigned long event) { struct clk_core *child, *tmp_clk, *fail_clk = NULL; int ret = NOTIFY_DONE; - if (clk->rate == clk->new_rate) + if (core->rate == core->new_rate) return NULL; - if (clk->notifier_count) { - ret = __clk_notify(clk, event, clk->rate, clk->new_rate); + if (core->notifier_count) { + ret = __clk_notify(core, event, core->rate, core->new_rate); if (ret & NOTIFY_STOP_MASK) - fail_clk = clk; + fail_clk = core; } - hlist_for_each_entry(child, &clk->children, child_node) { + hlist_for_each_entry(child, &core->children, child_node) { /* Skip children who will be reparented to another clock */ - if (child->new_parent && child->new_parent != clk) + if (child->new_parent && child->new_parent != core) continue; tmp_clk = clk_propagate_rate_change(child, event); if (tmp_clk) fail_clk = tmp_clk; } - /* handle the new child who might not be in clk->children yet */ - if (clk->new_child) { - tmp_clk = clk_propagate_rate_change(clk->new_child, event); + /* handle the new child who might not be in core->children yet */ + if (core->new_child) { + tmp_clk = clk_propagate_rate_change(core->new_child, event); if (tmp_clk) fail_clk = tmp_clk; } @@ -1735,7 +1735,7 @@ static struct clk_core *clk_propagate_rate_change(struct clk_core *clk, * walk down a subtree and set the new rates notifying the rate * change on the way */ -static void clk_change_rate(struct clk_core *clk) +static void clk_change_rate(struct clk_core *core) { struct clk_core *child; struct hlist_node *tmp; @@ -1744,77 +1744,77 @@ static void clk_change_rate(struct clk_core *clk) bool skip_set_rate = false; struct clk_core *old_parent; - old_rate = clk->rate; + old_rate = core->rate; - if (clk->new_parent) - best_parent_rate = clk->new_parent->rate; - else if (clk->parent) - best_parent_rate = clk->parent->rate; + if (core->new_parent) + best_parent_rate = core->new_parent->rate; + else if (core->parent) + best_parent_rate = core->parent->rate; - if (clk->new_parent && clk->new_parent != clk->parent) { - old_parent = __clk_set_parent_before(clk, clk->new_parent); - trace_clk_set_parent(clk, clk->new_parent); + if (core->new_parent && core->new_parent != core->parent) { + old_parent = __clk_set_parent_before(core, core->new_parent); + trace_clk_set_parent(core, core->new_parent); - if (clk->ops->set_rate_and_parent) { + if (core->ops->set_rate_and_parent) { skip_set_rate = true; - clk->ops->set_rate_and_parent(clk->hw, clk->new_rate, + core->ops->set_rate_and_parent(core->hw, core->new_rate, best_parent_rate, - clk->new_parent_index); - } else if (clk->ops->set_parent) { - clk->ops->set_parent(clk->hw, clk->new_parent_index); + core->new_parent_index); + } else if (core->ops->set_parent) { + core->ops->set_parent(core->hw, core->new_parent_index); } - trace_clk_set_parent_complete(clk, clk->new_parent); - __clk_set_parent_after(clk, clk->new_parent, old_parent); + trace_clk_set_parent_complete(core, core->new_parent); + __clk_set_parent_after(core, core->new_parent, old_parent); } - trace_clk_set_rate(clk, clk->new_rate); + trace_clk_set_rate(core, core->new_rate); - if (!skip_set_rate && clk->ops->set_rate) - clk->ops->set_rate(clk->hw, clk->new_rate, best_parent_rate); + if (!skip_set_rate && core->ops->set_rate) + core->ops->set_rate(core->hw, core->new_rate, best_parent_rate); - trace_clk_set_rate_complete(clk, clk->new_rate); + trace_clk_set_rate_complete(core, core->new_rate); - clk->rate = clk_recalc(clk, best_parent_rate); + core->rate = clk_recalc(core, best_parent_rate); - if (clk->notifier_count && old_rate != clk->rate) - __clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate); + if (core->notifier_count && old_rate != core->rate) + __clk_notify(core, POST_RATE_CHANGE, old_rate, core->rate); /* * Use safe iteration, as change_rate can actually swap parents * for certain clock types. */ - hlist_for_each_entry_safe(child, tmp, &clk->children, child_node) { + hlist_for_each_entry_safe(child, tmp, &core->children, child_node) { /* Skip children who will be reparented to another clock */ - if (child->new_parent && child->new_parent != clk) + if (child->new_parent && child->new_parent != core) continue; clk_change_rate(child); } - /* handle the new child who might not be in clk->children yet */ - if (clk->new_child) - clk_change_rate(clk->new_child); + /* handle the new child who might not be in core->children yet */ + if (core->new_child) + clk_change_rate(core->new_child); } -static int clk_core_set_rate_nolock(struct clk_core *clk, +static int clk_core_set_rate_nolock(struct clk_core *core, unsigned long req_rate) { struct clk_core *top, *fail_clk; unsigned long rate = req_rate; int ret = 0; - if (!clk) + if (!core) return 0; /* bail early if nothing to do */ - if (rate == clk_core_get_rate_nolock(clk)) + if (rate == clk_core_get_rate_nolock(core)) return 0; - if ((clk->flags & CLK_SET_RATE_GATE) && clk->prepare_count) + if ((core->flags & CLK_SET_RATE_GATE) && core->prepare_count) return -EBUSY; /* calculate new rates and get the topmost changed clock */ - top = clk_calc_new_rates(clk, rate); + top = clk_calc_new_rates(core, rate); if (!top) return -EINVAL; @@ -1830,7 +1830,7 @@ static int clk_core_set_rate_nolock(struct clk_core *clk, /* change the rates */ clk_change_rate(top); - clk->req_rate = req_rate; + core->req_rate = req_rate; return ret; } @@ -1969,55 +1969,55 @@ EXPORT_SYMBOL_GPL(clk_get_parent); * .parents array exists, and if so use it to avoid an expensive tree * traversal. If .parents does not exist then walk the tree. */ -static struct clk_core *__clk_init_parent(struct clk_core *clk) +static struct clk_core *__clk_init_parent(struct clk_core *core) { struct clk_core *ret = NULL; u8 index; /* handle the trivial cases */ - if (!clk->num_parents) + if (!core->num_parents) goto out; - if (clk->num_parents == 1) { - if (IS_ERR_OR_NULL(clk->parent)) - clk->parent = clk_core_lookup(clk->parent_names[0]); - ret = clk->parent; + if (core->num_parents == 1) { + if (IS_ERR_OR_NULL(core->parent)) + core->parent = clk_core_lookup(core->parent_names[0]); + ret = core->parent; goto out; } - if (!clk->ops->get_parent) { - WARN(!clk->ops->get_parent, + if (!core->ops->get_parent) { + WARN(!core->ops->get_parent, "%s: multi-parent clocks must implement .get_parent\n", __func__); goto out; }; /* - * Do our best to cache parent clocks in clk->parents. This prevents - * unnecessary and expensive lookups. We don't set clk->parent here; + * Do our best to cache parent clocks in core->parents. This prevents + * unnecessary and expensive lookups. We don't set core->parent here; * that is done by the calling function. */ - index = clk->ops->get_parent(clk->hw); + index = core->ops->get_parent(core->hw); - if (!clk->parents) - clk->parents = - kcalloc(clk->num_parents, sizeof(struct clk *), + if (!core->parents) + core->parents = + kcalloc(core->num_parents, sizeof(struct clk *), GFP_KERNEL); - ret = clk_core_get_parent_by_index(clk, index); + ret = clk_core_get_parent_by_index(core, index); out: return ret; } -static void clk_core_reparent(struct clk_core *clk, +static void clk_core_reparent(struct clk_core *core, struct clk_core *new_parent) { - clk_reparent(clk, new_parent); - __clk_recalc_accuracies(clk); - __clk_recalc_rates(clk, POST_RATE_CHANGE); + clk_reparent(core, new_parent); + __clk_recalc_accuracies(core); + __clk_recalc_rates(core, POST_RATE_CHANGE); } /** @@ -2054,61 +2054,61 @@ bool clk_has_parent(struct clk *clk, struct clk *parent) } EXPORT_SYMBOL_GPL(clk_has_parent); -static int clk_core_set_parent(struct clk_core *clk, struct clk_core *parent) +static int clk_core_set_parent(struct clk_core *core, struct clk_core *parent) { int ret = 0; int p_index = 0; unsigned long p_rate = 0; - if (!clk) + if (!core) return 0; /* prevent racing with updates to the clock topology */ clk_prepare_lock(); - if (clk->parent == parent) + if (core->parent == parent) goto out; /* verify ops for for multi-parent clks */ - if ((clk->num_parents > 1) && (!clk->ops->set_parent)) { + if ((core->num_parents > 1) && (!core->ops->set_parent)) { ret = -ENOSYS; goto out; } /* check that we are allowed to re-parent if the clock is in use */ - if ((clk->flags & CLK_SET_PARENT_GATE) && clk->prepare_count) { + if ((core->flags & CLK_SET_PARENT_GATE) && core->prepare_count) { ret = -EBUSY; goto out; } /* try finding the new parent index */ if (parent) { - p_index = clk_fetch_parent_index(clk, parent); + p_index = clk_fetch_parent_index(core, parent); p_rate = parent->rate; if (p_index < 0) { pr_debug("%s: clk %s can not be parent of clk %s\n", - __func__, parent->name, clk->name); + __func__, parent->name, core->name); ret = p_index; goto out; } } /* propagate PRE_RATE_CHANGE notifications */ - ret = __clk_speculate_rates(clk, p_rate); + ret = __clk_speculate_rates(core, p_rate); /* abort if a driver objects */ if (ret & NOTIFY_STOP_MASK) goto out; /* do the re-parent */ - ret = __clk_set_parent(clk, parent, p_index); + ret = __clk_set_parent(core, parent, p_index); /* propagate rate an accuracy recalculation accordingly */ if (ret) { - __clk_recalc_rates(clk, ABORT_RATE_CHANGE); + __clk_recalc_rates(core, ABORT_RATE_CHANGE); } else { - __clk_recalc_rates(clk, POST_RATE_CHANGE); - __clk_recalc_accuracies(clk); + __clk_recalc_rates(core, POST_RATE_CHANGE); + __clk_recalc_accuracies(core); } out: @@ -2193,15 +2193,15 @@ int clk_set_phase(struct clk *clk, int degrees) } EXPORT_SYMBOL_GPL(clk_set_phase); -static int clk_core_get_phase(struct clk_core *clk) +static int clk_core_get_phase(struct clk_core *core) { int ret = 0; - if (!clk) + if (!core) goto out; clk_prepare_lock(); - ret = clk->phase; + ret = core->phase; clk_prepare_unlock(); out: @@ -2263,67 +2263,67 @@ static int __clk_init(struct device *dev, struct clk *clk_user) int i, ret = 0; struct clk_core *orphan; struct hlist_node *tmp2; - struct clk_core *clk; + struct clk_core *core; unsigned long rate; if (!clk_user) return -EINVAL; - clk = clk_user->core; + core = clk_user->core; clk_prepare_lock(); /* check to see if a clock with this name is already registered */ - if (clk_core_lookup(clk->name)) { + if (clk_core_lookup(core->name)) { pr_debug("%s: clk %s already initialized\n", - __func__, clk->name); + __func__, core->name); ret = -EEXIST; goto out; } /* check that clk_ops are sane. See Documentation/clk.txt */ - if (clk->ops->set_rate && - !((clk->ops->round_rate || clk->ops->determine_rate) && - clk->ops->recalc_rate)) { + if (core->ops->set_rate && + !((core->ops->round_rate || core->ops->determine_rate) && + core->ops->recalc_rate)) { pr_warning("%s: %s must implement .round_rate or .determine_rate in addition to .recalc_rate\n", - __func__, clk->name); + __func__, core->name); ret = -EINVAL; goto out; } - if (clk->ops->set_parent && !clk->ops->get_parent) { + if (core->ops->set_parent && !core->ops->get_parent) { pr_warning("%s: %s must implement .get_parent & .set_parent\n", - __func__, clk->name); + __func__, core->name); ret = -EINVAL; goto out; } - if (clk->ops->set_rate_and_parent && - !(clk->ops->set_parent && clk->ops->set_rate)) { + if (core->ops->set_rate_and_parent && + !(core->ops->set_parent && core->ops->set_rate)) { pr_warn("%s: %s must implement .set_parent & .set_rate\n", - __func__, clk->name); + __func__, core->name); ret = -EINVAL; goto out; } /* throw a WARN if any entries in parent_names are NULL */ - for (i = 0; i < clk->num_parents; i++) - WARN(!clk->parent_names[i], + for (i = 0; i < core->num_parents; i++) + WARN(!core->parent_names[i], "%s: invalid NULL in %s's .parent_names\n", - __func__, clk->name); + __func__, core->name); /* * Allocate an array of struct clk *'s to avoid unnecessary string * look-ups of clk's possible parents. This can fail for clocks passed - * in to clk_init during early boot; thus any access to clk->parents[] + * in to clk_init during early boot; thus any access to core->parents[] * must always check for a NULL pointer and try to populate it if * necessary. * - * If clk->parents is not NULL we skip this entire block. This allows - * for clock drivers to statically initialize clk->parents. + * If core->parents is not NULL we skip this entire block. This allows + * for clock drivers to statically initialize core->parents. */ - if (clk->num_parents > 1 && !clk->parents) { - clk->parents = kcalloc(clk->num_parents, sizeof(struct clk *), + if (core->num_parents > 1 && !core->parents) { + core->parents = kcalloc(core->num_parents, sizeof(struct clk *), GFP_KERNEL); /* * clk_core_lookup returns NULL for parents that have not been @@ -2331,16 +2331,16 @@ static int __clk_init(struct device *dev, struct clk *clk_user) * for a NULL pointer. We can always perform lazy lookups for * missing parents later on. */ - if (clk->parents) - for (i = 0; i < clk->num_parents; i++) - clk->parents[i] = - clk_core_lookup(clk->parent_names[i]); + if (core->parents) + for (i = 0; i < core->num_parents; i++) + core->parents[i] = + clk_core_lookup(core->parent_names[i]); } - clk->parent = __clk_init_parent(clk); + core->parent = __clk_init_parent(core); /* - * Populate clk->parent if parent has already been __clk_init'd. If + * Populate core->parent if parent has already been __clk_init'd. If * parent has not yet been __clk_init'd then place clk in the orphan * list. If clk has set the CLK_IS_ROOT flag then place it in the root * clk list. @@ -2349,13 +2349,13 @@ static int __clk_init(struct device *dev, struct clk *clk_user) * clocks and re-parent any that are children of the clock currently * being clk_init'd. */ - if (clk->parent) - hlist_add_head(&clk->child_node, - &clk->parent->children); - else if (clk->flags & CLK_IS_ROOT) - hlist_add_head(&clk->child_node, &clk_root_list); + if (core->parent) + hlist_add_head(&core->child_node, + &core->parent->children); + else if (core->flags & CLK_IS_ROOT) + hlist_add_head(&core->child_node, &clk_root_list); else - hlist_add_head(&clk->child_node, &clk_orphan_list); + hlist_add_head(&core->child_node, &clk_orphan_list); /* * Set clk's accuracy. The preferred method is to use @@ -2364,23 +2364,23 @@ static int __clk_init(struct device *dev, struct clk *clk_user) * parent (or is orphaned) then accuracy is set to zero (perfect * clock). */ - if (clk->ops->recalc_accuracy) - clk->accuracy = clk->ops->recalc_accuracy(clk->hw, - __clk_get_accuracy(clk->parent)); - else if (clk->parent) - clk->accuracy = clk->parent->accuracy; + if (core->ops->recalc_accuracy) + core->accuracy = core->ops->recalc_accuracy(core->hw, + __clk_get_accuracy(core->parent)); + else if (core->parent) + core->accuracy = core->parent->accuracy; else - clk->accuracy = 0; + core->accuracy = 0; /* * Set clk's phase. * Since a phase is by definition relative to its parent, just * query the current clock phase, or just assume it's in phase. */ - if (clk->ops->get_phase) - clk->phase = clk->ops->get_phase(clk->hw); + if (core->ops->get_phase) + core->phase = core->ops->get_phase(core->hw); else - clk->phase = 0; + core->phase = 0; /* * Set clk's rate. The preferred method is to use .recalc_rate. For @@ -2388,14 +2388,14 @@ static int __clk_init(struct device *dev, struct clk *clk_user) * parent's rate. If a clock doesn't have a parent (or is orphaned) * then rate is set to zero. */ - if (clk->ops->recalc_rate) - rate = clk->ops->recalc_rate(clk->hw, - clk_core_get_rate_nolock(clk->parent)); - else if (clk->parent) - rate = clk->parent->rate; + if (core->ops->recalc_rate) + rate = core->ops->recalc_rate(core->hw, + clk_core_get_rate_nolock(core->parent)); + else if (core->parent) + rate = core->parent->rate; else rate = 0; - clk->rate = clk->req_rate = rate; + core->rate = core->req_rate = rate; /* * walk the list of orphan clocks and reparent any that are children of @@ -2404,14 +2404,14 @@ static int __clk_init(struct device *dev, struct clk *clk_user) hlist_for_each_entry_safe(orphan, tmp2, &clk_orphan_list, child_node) { if (orphan->num_parents && orphan->ops->get_parent) { i = orphan->ops->get_parent(orphan->hw); - if (!strcmp(clk->name, orphan->parent_names[i])) - clk_core_reparent(orphan, clk); + if (!strcmp(core->name, orphan->parent_names[i])) + clk_core_reparent(orphan, core); continue; } for (i = 0; i < orphan->num_parents; i++) - if (!strcmp(clk->name, orphan->parent_names[i])) { - clk_core_reparent(orphan, clk); + if (!strcmp(core->name, orphan->parent_names[i])) { + clk_core_reparent(orphan, core); break; } } @@ -2424,15 +2424,15 @@ static int __clk_init(struct device *dev, struct clk *clk_user) * Please consider other ways of solving initialization problems before * using this callback, as its use is discouraged. */ - if (clk->ops->init) - clk->ops->init(clk->hw); + if (core->ops->init) + core->ops->init(core->hw); - kref_init(&clk->ref); + kref_init(&core->ref); out: clk_prepare_unlock(); if (!ret) - clk_debug_register(clk); + clk_debug_register(core); return ret; } @@ -2485,34 +2485,34 @@ void __clk_free_clk(struct clk *clk) struct clk *clk_register(struct device *dev, struct clk_hw *hw) { int i, ret; - struct clk_core *clk; + struct clk_core *core; - clk = kzalloc(sizeof(*clk), GFP_KERNEL); - if (!clk) { + core = kzalloc(sizeof(*core), GFP_KERNEL); + if (!core) { pr_err("%s: could not allocate clk\n", __func__); ret = -ENOMEM; goto fail_out; } - clk->name = kstrdup_const(hw->init->name, GFP_KERNEL); - if (!clk->name) { + core->name = kstrdup_const(hw->init->name, GFP_KERNEL); + if (!core->name) { pr_err("%s: could not allocate clk->name\n", __func__); ret = -ENOMEM; goto fail_name; } - clk->ops = hw->init->ops; + core->ops = hw->init->ops; if (dev && dev->driver) - clk->owner = dev->driver->owner; - clk->hw = hw; - clk->flags = hw->init->flags; - clk->num_parents = hw->init->num_parents; - hw->core = clk; + core->owner = dev->driver->owner; + core->hw = hw; + core->flags = hw->init->flags; + core->num_parents = hw->init->num_parents; + hw->core = core; /* allocate local copy in case parent_names is __initdata */ - clk->parent_names = kcalloc(clk->num_parents, sizeof(char *), + core->parent_names = kcalloc(core->num_parents, sizeof(char *), GFP_KERNEL); - if (!clk->parent_names) { + if (!core->parent_names) { pr_err("%s: could not allocate clk->parent_names\n", __func__); ret = -ENOMEM; goto fail_parent_names; @@ -2520,17 +2520,17 @@ struct clk *clk_register(struct device *dev, struct clk_hw *hw) /* copy each string name in case parent_names is __initdata */ - for (i = 0; i < clk->num_parents; i++) { - clk->parent_names[i] = kstrdup_const(hw->init->parent_names[i], + for (i = 0; i < core->num_parents; i++) { + core->parent_names[i] = kstrdup_const(hw->init->parent_names[i], GFP_KERNEL); - if (!clk->parent_names[i]) { + if (!core->parent_names[i]) { pr_err("%s: could not copy parent_names\n", __func__); ret = -ENOMEM; goto fail_parent_names_copy; } } - INIT_HLIST_HEAD(&clk->clks); + INIT_HLIST_HEAD(&core->clks); hw->clk = __clk_create_clk(hw, NULL, NULL); if (IS_ERR(hw->clk)) { @@ -2548,12 +2548,12 @@ struct clk *clk_register(struct device *dev, struct clk_hw *hw) fail_parent_names_copy: while (--i >= 0) - kfree_const(clk->parent_names[i]); - kfree(clk->parent_names); + kfree_const(core->parent_names[i]); + kfree(core->parent_names); fail_parent_names: - kfree_const(clk->name); + kfree_const(core->name); fail_name: - kfree(clk); + kfree(core); fail_out: return ERR_PTR(ret); } @@ -2565,18 +2565,18 @@ EXPORT_SYMBOL_GPL(clk_register); */ static void __clk_release(struct kref *ref) { - struct clk_core *clk = container_of(ref, struct clk_core, ref); - int i = clk->num_parents; + struct clk_core *core = container_of(ref, struct clk_core, ref); + int i = core->num_parents; lockdep_assert_held(&prepare_lock); - kfree(clk->parents); + kfree(core->parents); while (--i >= 0) - kfree_const(clk->parent_names[i]); + kfree_const(core->parent_names[i]); - kfree(clk->parent_names); - kfree_const(clk->name); - kfree(clk); + kfree(core->parent_names); + kfree_const(core->name); + kfree(core); } /* |