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clk: added extra features to DebugFS representation of the clock tree.

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This commit is contained in:
Humberto Silva Naves
2014-07-14 07:04:03 +02:00
parent f948165438
commit 866e9c118b
2 changed files with 24 additions and 0 deletions
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8
drivers/clk/Kconfig
View File

@@ -33,6 +33,14 @@ config COMMON_CLK_DEBUG
clk_flags, clk_prepare_count, clk_enable_count &
clk_notifier_count.
config COMMON_CLK_DEBUG_EXTRA
bool "Extra features for the clock tree DebugFS"
depends on COMMON_CLK_DEBUG
---help---
Adds one write-one file named change_rate to each
directory, allowing the function clk_set_rate to
be called.
config COMMON_CLK_WM831X
tristate "Clock driver for WM831x/2x PMICs"
depends on MFD_WM831X

16
drivers/clk/clk.c
View File

@@ -226,6 +226,16 @@ static const struct file_operations clk_dump_fops = {
.release = single_release,
};
#if CONFIG_COMMON_CLK_DEBUG_EXTRA
static int debugfs_clk_set_rate(void *data, u64 val)
{
struct clk *clk = (struct clk *) data;
return clk_set_rate(clk, (u32) val);
}
DEFINE_SIMPLE_ATTRIBUTE(fops_clk_rate_wo, NULL, debugfs_clk_set_rate, "%llu\n");
#endif /* CONFIG_COMMON_CLK_DEBUG_EXTRA */
/* caller must hold prepare_lock */
static int clk_debug_create_one(struct clk *clk, struct dentry *pdentry)
{
@@ -248,6 +258,12 @@ static int clk_debug_create_one(struct clk *clk, struct dentry *pdentry)
if (!d)
goto err_out;
#if CONFIG_COMMON_CLK_DEBUG_EXTRA
d = debugfs_create_file("change_rate", S_IWUGO, clk->dentry, clk, &fops_clk_rate_wo);
if (!d)
goto err_out;
#endif
d = debugfs_create_x32("clk_flags", S_IRUGO, clk->dentry,
(u32 *)&clk->flags);
if (!d)