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path: root/drivers/sh/clk/core.c
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Diffstat (limited to 'drivers/sh/clk/core.c')
-rw-r--r--drivers/sh/clk/core.c107
1 files changed, 20 insertions, 87 deletions
diff --git a/drivers/sh/clk/core.c b/drivers/sh/clk/core.c
index dc8d022c07a1..db257a35e71a 100644
--- a/drivers/sh/clk/core.c
+++ b/drivers/sh/clk/core.c
@@ -25,7 +25,6 @@
25#include <linux/seq_file.h> 25#include <linux/seq_file.h>
26#include <linux/err.h> 26#include <linux/err.h>
27#include <linux/io.h> 27#include <linux/io.h>
28#include <linux/debugfs.h>
29#include <linux/cpufreq.h> 28#include <linux/cpufreq.h>
30#include <linux/clk.h> 29#include <linux/clk.h>
31#include <linux/sh_clk.h> 30#include <linux/sh_clk.h>
@@ -173,6 +172,26 @@ long clk_rate_div_range_round(struct clk *clk, unsigned int div_min,
173 return clk_rate_round_helper(&div_range_round); 172 return clk_rate_round_helper(&div_range_round);
174} 173}
175 174
175static long clk_rate_mult_range_iter(unsigned int pos,
176 struct clk_rate_round_data *rounder)
177{
178 return clk_get_rate(rounder->arg) * pos;
179}
180
181long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min,
182 unsigned int mult_max, unsigned long rate)
183{
184 struct clk_rate_round_data mult_range_round = {
185 .min = mult_min,
186 .max = mult_max,
187 .func = clk_rate_mult_range_iter,
188 .arg = clk_get_parent(clk),
189 .rate = rate,
190 };
191
192 return clk_rate_round_helper(&mult_range_round);
193}
194
176int clk_rate_table_find(struct clk *clk, 195int clk_rate_table_find(struct clk *clk,
177 struct cpufreq_frequency_table *freq_table, 196 struct cpufreq_frequency_table *freq_table,
178 unsigned long rate) 197 unsigned long rate)
@@ -205,9 +224,6 @@ int clk_reparent(struct clk *child, struct clk *parent)
205 list_add(&child->sibling, &parent->children); 224 list_add(&child->sibling, &parent->children);
206 child->parent = parent; 225 child->parent = parent;
207 226
208 /* now do the debugfs renaming to reattach the child
209 to the proper parent */
210
211 return 0; 227 return 0;
212} 228}
213 229
@@ -665,89 +681,6 @@ static int __init clk_syscore_init(void)
665subsys_initcall(clk_syscore_init); 681subsys_initcall(clk_syscore_init);
666#endif 682#endif
667 683
668/*
669 * debugfs support to trace clock tree hierarchy and attributes
670 */
671static struct dentry *clk_debugfs_root;
672
673static int clk_debugfs_register_one(struct clk *c)
674{
675 int err;
676 struct dentry *d;
677 struct clk *pa = c->parent;
678 char s[255];
679 char *p = s;
680
681 p += sprintf(p, "%p", c);
682 d = debugfs_create_dir(s, pa ? pa->dentry : clk_debugfs_root);
683 if (!d)
684 return -ENOMEM;
685 c->dentry = d;
686
687 d = debugfs_create_u8("usecount", S_IRUGO, c->dentry, (u8 *)&c->usecount);
688 if (!d) {
689 err = -ENOMEM;
690 goto err_out;
691 }
692 d = debugfs_create_u32("rate", S_IRUGO, c->dentry, (u32 *)&c->rate);
693 if (!d) {
694 err = -ENOMEM;
695 goto err_out;
696 }
697 d = debugfs_create_x32("flags", S_IRUGO, c->dentry, (u32 *)&c->flags);
698 if (!d) {
699 err = -ENOMEM;
700 goto err_out;
701 }
702 return 0;
703
704err_out:
705 debugfs_remove_recursive(c->dentry);
706 return err;
707}
708
709static int clk_debugfs_register(struct clk *c)
710{
711 int err;
712 struct clk *pa = c->parent;
713
714 if (pa && !pa->dentry) {
715 err = clk_debugfs_register(pa);
716 if (err)
717 return err;
718 }
719
720 if (!c->dentry) {
721 err = clk_debugfs_register_one(c);
722 if (err)
723 return err;
724 }
725 return 0;
726}
727
728static int __init clk_debugfs_init(void)
729{
730 struct clk *c;
731 struct dentry *d;
732 int err;
733
734 d = debugfs_create_dir("clock", NULL);
735 if (!d)
736 return -ENOMEM;
737 clk_debugfs_root = d;
738
739 list_for_each_entry(c, &clock_list, node) {
740 err = clk_debugfs_register(c);
741 if (err)
742 goto err_out;
743 }
744 return 0;
745err_out:
746 debugfs_remove_recursive(clk_debugfs_root);
747 return err;
748}
749late_initcall(clk_debugfs_init);
750
751static int __init clk_late_init(void) 684static int __init clk_late_init(void)
752{ 685{
753 unsigned long flags; 686 unsigned long flags;