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 ***/
.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;
}
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);
/**
* 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);
}
*/
static int __init clk_debug_init(void)
{
- struct clk_core *clk;
+ struct clk_core *core;
struct dentry *d;
rootdir = debugfs_create_dir("clk", NULL);
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);
}
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;
/*
* 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:
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");
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();
}
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)
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:
}
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)
}
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;
}
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;
}
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;
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)
{
*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);
}
/*** 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);
}
/**
}
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;
}
}
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)
}
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;
}
}
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)
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;
}
/**
/**
* __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
* 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;
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);
/**
* __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
*
* 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;
}
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
*
* 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;
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;
}
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;
}
* 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;
}
}
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
*
* 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;
}
}
-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
*
* 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;
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;
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);
}
* 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;
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,
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;
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 */
/* 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;
}
* 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;
}
* 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;
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;
/* change the rates */
clk_change_rate(top);
- clk->req_rate = req_rate;
+ core->req_rate = req_rate;
return ret;
}
* .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);
}
/**
}
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:
}
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:
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
* 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.
* 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
* 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
* 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
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;
}
}
* 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;
}
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;
/* 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)) {
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);
}
*/
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);
}
/*
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff