summaryrefslogtreecommitdiff
path: root/drivers/clk/ti/autoidle.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk/ti/autoidle.c')
-rw-r--r--drivers/clk/ti/autoidle.c115
1 files changed, 107 insertions, 8 deletions
diff --git a/drivers/clk/ti/autoidle.c b/drivers/clk/ti/autoidle.c
index e75c64c9e..345af4346 100644
--- a/drivers/clk/ti/autoidle.c
+++ b/drivers/clk/ti/autoidle.c
@@ -22,6 +22,8 @@
#include <linux/of_address.h>
#include <linux/clk/ti.h>
+#include "clock.h"
+
struct clk_ti_autoidle {
void __iomem *reg;
u8 shift;
@@ -33,8 +35,41 @@ struct clk_ti_autoidle {
#define AUTOIDLE_LOW 0x1
static LIST_HEAD(autoidle_clks);
+static LIST_HEAD(clk_hw_omap_clocks);
+
+/**
+ * omap2_clk_deny_idle - disable autoidle on an OMAP clock
+ * @clk: struct clk * to disable autoidle for
+ *
+ * Disable autoidle on an OMAP clock.
+ */
+int omap2_clk_deny_idle(struct clk *clk)
+{
+ struct clk_hw_omap *c;
-static void ti_allow_autoidle(struct clk_ti_autoidle *clk)
+ c = to_clk_hw_omap(__clk_get_hw(clk));
+ if (c->ops && c->ops->deny_idle)
+ c->ops->deny_idle(c);
+ return 0;
+}
+
+/**
+ * omap2_clk_allow_idle - enable autoidle on an OMAP clock
+ * @clk: struct clk * to enable autoidle for
+ *
+ * Enable autoidle on an OMAP clock.
+ */
+int omap2_clk_allow_idle(struct clk *clk)
+{
+ struct clk_hw_omap *c;
+
+ c = to_clk_hw_omap(__clk_get_hw(clk));
+ if (c->ops && c->ops->allow_idle)
+ c->ops->allow_idle(c);
+ return 0;
+}
+
+static void _allow_autoidle(struct clk_ti_autoidle *clk)
{
u32 val;
@@ -48,7 +83,7 @@ static void ti_allow_autoidle(struct clk_ti_autoidle *clk)
ti_clk_ll_ops->clk_writel(val, clk->reg);
}
-static void ti_deny_autoidle(struct clk_ti_autoidle *clk)
+static void _deny_autoidle(struct clk_ti_autoidle *clk)
{
u32 val;
@@ -63,31 +98,31 @@ static void ti_deny_autoidle(struct clk_ti_autoidle *clk)
}
/**
- * of_ti_clk_allow_autoidle_all - enable autoidle for all clocks
+ * _clk_generic_allow_autoidle_all - enable autoidle for all clocks
*
* Enables hardware autoidle for all registered DT clocks, which have
* the feature.
*/
-void of_ti_clk_allow_autoidle_all(void)
+static void _clk_generic_allow_autoidle_all(void)
{
struct clk_ti_autoidle *c;
list_for_each_entry(c, &autoidle_clks, node)
- ti_allow_autoidle(c);
+ _allow_autoidle(c);
}
/**
- * of_ti_clk_deny_autoidle_all - disable autoidle for all clocks
+ * _clk_generic_deny_autoidle_all - disable autoidle for all clocks
*
* Disables hardware autoidle for all registered DT clocks, which have
* the feature.
*/
-void of_ti_clk_deny_autoidle_all(void)
+static void _clk_generic_deny_autoidle_all(void)
{
struct clk_ti_autoidle *c;
list_for_each_entry(c, &autoidle_clks, node)
- ti_deny_autoidle(c);
+ _deny_autoidle(c);
}
/**
@@ -131,3 +166,67 @@ int __init of_ti_clk_autoidle_setup(struct device_node *node)
return 0;
}
+
+/**
+ * omap2_init_clk_hw_omap_clocks - initialize an OMAP clock
+ * @hw: struct clk_hw * to initialize
+ *
+ * Add an OMAP clock @clk to the internal list of OMAP clocks. Used
+ * temporarily for autoidle handling, until this support can be
+ * integrated into the common clock framework code in some way. No
+ * return value.
+ */
+void omap2_init_clk_hw_omap_clocks(struct clk_hw *hw)
+{
+ struct clk_hw_omap *c;
+
+ if (clk_hw_get_flags(hw) & CLK_IS_BASIC)
+ return;
+
+ c = to_clk_hw_omap(hw);
+ list_add(&c->node, &clk_hw_omap_clocks);
+}
+
+/**
+ * omap2_clk_enable_autoidle_all - enable autoidle on all OMAP clocks that
+ * support it
+ *
+ * Enable clock autoidle on all OMAP clocks that have allow_idle
+ * function pointers associated with them. This function is intended
+ * to be temporary until support for this is added to the common clock
+ * code. Returns 0.
+ */
+int omap2_clk_enable_autoidle_all(void)
+{
+ struct clk_hw_omap *c;
+
+ list_for_each_entry(c, &clk_hw_omap_clocks, node)
+ if (c->ops && c->ops->allow_idle)
+ c->ops->allow_idle(c);
+
+ _clk_generic_allow_autoidle_all();
+
+ return 0;
+}
+
+/**
+ * omap2_clk_disable_autoidle_all - disable autoidle on all OMAP clocks that
+ * support it
+ *
+ * Disable clock autoidle on all OMAP clocks that have allow_idle
+ * function pointers associated with them. This function is intended
+ * to be temporary until support for this is added to the common clock
+ * code. Returns 0.
+ */
+int omap2_clk_disable_autoidle_all(void)
+{
+ struct clk_hw_omap *c;
+
+ list_for_each_entry(c, &clk_hw_omap_clocks, node)
+ if (c->ops && c->ops->deny_idle)
+ c->ops->deny_idle(c);
+
+ _clk_generic_deny_autoidle_all();
+
+ return 0;
+}