1 files changed, 63 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/clkt2xxx_dpll.c b/arch/arm/mach-omap2/clkt2xxx_dpll.c
new file mode 100644
index 000000000000..1502a7bc20bb
--- /dev/null
+++ b/arch/arm/mach-omap2/clkt2xxx_dpll.c
@@ -0,0 +1,63 @@
+/*
+ * OMAP2-specific DPLL control functions
+ *
+ * Copyright (C) 2011 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <plat/clock.h>
+
+#include "clock.h"
+#include "cm2xxx_3xxx.h"
+#include "cm-regbits-24xx.h"
+
+/* Private functions */
+
+/**
+ * _allow_idle - enable DPLL autoidle bits
+ * @clk: struct clk * of the DPLL to operate on
+ *
+ * Enable DPLL automatic idle control.  The DPLL will enter low-power
+ * stop when its downstream clocks are gated.  No return value.
+ * REVISIT: DPLL can optionally enter low-power bypass by writing 0x1
+ * instead.  Add some mechanism to optionally enter this mode.
+ */
+static void _allow_idle(struct clk *clk)
+{
+        if (!clk || !clk->dpll_data)
+                return;
+
+        omap2xxx_cm_set_dpll_auto_low_power_stop();
+}
+
+/**
+ * _deny_idle - prevent DPLL from automatically idling
+ * @clk: struct clk * of the DPLL to operate on
+ *
+ * Disable DPLL automatic idle control.  No return value.
+ */
+static void _deny_idle(struct clk *clk)
+{
+        if (!clk || !clk->dpll_data)
+                return;
+
+        omap2xxx_cm_set_dpll_disable_autoidle();
+}
+
+
+/* Public data */
+
+const struct clkops clkops_omap2xxx_dpll_ops = {
+        .allow_idle     = _allow_idle,
+        .deny_idle      = _deny_idle,
+};
+