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Diffstat (limited to 'arch/arm/plat-omap/clock.c')
-rw-r--r--arch/arm/plat-omap/clock.c52
1 files changed, 49 insertions, 3 deletions
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 4becbdd1935c..5261a0923691 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -173,7 +173,7 @@ EXPORT_SYMBOL(clk_get_parent);
* OMAP specific clock functions shared between omap1 and omap2
*-------------------------------------------------------------------------*/
-unsigned int __initdata mpurate;
+int __initdata mpurate;
/*
* By default we use the rate set by the bootloader.
@@ -199,6 +199,17 @@ unsigned long followparent_recalc(struct clk *clk)
return clk->parent->rate;
}
+/*
+ * Used for clocks that have the same value as the parent clock,
+ * divided by some factor
+ */
+unsigned long omap_fixed_divisor_recalc(struct clk *clk)
+{
+ WARN_ON(!clk->fixed_div);
+
+ return clk->parent->rate / clk->fixed_div;
+}
+
void clk_reparent(struct clk *child, struct clk *parent)
{
list_del_init(&child->sibling);
@@ -302,6 +313,33 @@ void clk_enable_init_clocks(void)
}
}
+/**
+ * omap_clk_get_by_name - locate OMAP struct clk by its name
+ * @name: name of the struct clk to locate
+ *
+ * Locate an OMAP struct clk by its name. Assumes that struct clk
+ * names are unique. Returns NULL if not found or a pointer to the
+ * struct clk if found.
+ */
+struct clk *omap_clk_get_by_name(const char *name)
+{
+ struct clk *c;
+ struct clk *ret = NULL;
+
+ mutex_lock(&clocks_mutex);
+
+ list_for_each_entry(c, &clocks, node) {
+ if (!strcmp(c->name, name)) {
+ ret = c;
+ break;
+ }
+ }
+
+ mutex_unlock(&clocks_mutex);
+
+ return ret;
+}
+
/*
* Low level helpers
*/
@@ -319,6 +357,16 @@ const struct clkops clkops_null = {
.disable = clkll_disable_null,
};
+/*
+ * Dummy clock
+ *
+ * Used for clock aliases that are needed on some OMAPs, but not others
+ */
+struct clk dummy_ck = {
+ .name = "dummy",
+ .ops = &clkops_null,
+};
+
#ifdef CONFIG_CPU_FREQ
void clk_init_cpufreq_table(struct cpufreq_frequency_table **table)
{
@@ -397,8 +445,6 @@ static int clk_debugfs_register_one(struct clk *c)
char *p = s;
p += sprintf(p, "%s", c->name);
- if (c->id != 0)
- sprintf(p, ":%d", c->id);
d = debugfs_create_dir(s, pa ? pa->dent : clk_debugfs_root);
if (!d)
return -ENOMEM;