1 files changed, 152 insertions, 1 deletions
diff --git a/arch/arm/mach-omap1/clock.h b/arch/arm/mach-omap1/clock.h
index 3d04f4f67676..155ddd922c17 100644
--- a/arch/arm/mach-omap1/clock.h
+++ b/arch/arm/mach-omap1/clock.h
@@ -14,8 +14,159 @@
 #define __ARCH_ARM_MACH_OMAP1_CLOCK_H
 
 #include <linux/clk.h>
+#include <linux/list.h>
 
-#include <plat/clock.h>
+struct module;
+struct clk;
+
+/* Temporary, needed during the common clock framework conversion */
+#define __clk_get_name(clk)	(clk->name)
+#define __clk_get_parent(clk)	(clk->parent)
+#define __clk_get_rate(clk)	(clk->rate)
+
+/**
+ * struct clkops - some clock function pointers
+ * @enable: fn ptr that enables the current clock in hardware
+ * @disable: fn ptr that enables the current clock in hardware
+ * @find_idlest: function returning the IDLEST register for the clock's IP blk
+ * @find_companion: function returning the "companion" clk reg for the clock
+ * @allow_idle: fn ptr that enables autoidle for the current clock in hardware
+ * @deny_idle: fn ptr that disables autoidle for the current clock in hardware
+ *
+ * A "companion" clk is an accompanying clock to the one being queried
+ * that must be enabled for the IP module connected to the clock to
+ * become accessible by the hardware.  Neither @find_idlest nor
+ * @find_companion should be needed; that information is IP
+ * block-specific; the hwmod code has been created to handle this, but
+ * until hwmod data is ready and drivers have been converted to use PM
+ * runtime calls in place of clk_enable()/clk_disable(), @find_idlest and
+ * @find_companion must, unfortunately, remain.
+ */
+struct clkops {
+	int			(*enable)(struct clk *);
+	void			(*disable)(struct clk *);
+	void			(*find_idlest)(struct clk *, void __iomem **,
+					       u8 *, u8 *);
+	void			(*find_companion)(struct clk *, void __iomem **,
+						  u8 *);
+	void			(*allow_idle)(struct clk *);
+	void			(*deny_idle)(struct clk *);
+};
+
+/*
+ * struct clk.flags possibilities
+ *
+ * XXX document the rest of the clock flags here
+ *
+ * CLOCK_CLKOUTX2: (OMAP4 only) DPLL CLKOUT and CLKOUTX2 GATE_CTRL
+ *     bits share the same register.  This flag allows the
+ *     omap4_dpllmx*() code to determine which GATE_CTRL bit field
+ *     should be used.  This is a temporary solution - a better approach
+ *     would be to associate clock type-specific data with the clock,
+ *     similar to the struct dpll_data approach.
+ */
+#define ENABLE_REG_32BIT	(1 << 0)	/* Use 32-bit access */
+#define CLOCK_IDLE_CONTROL	(1 << 1)
+#define CLOCK_NO_IDLE_PARENT	(1 << 2)
+#define ENABLE_ON_INIT		(1 << 3)	/* Enable upon framework init */
+#define INVERT_ENABLE		(1 << 4)	/* 0 enables, 1 disables */
+#define CLOCK_CLKOUTX2		(1 << 5)
+
+/**
+ * struct clk - OMAP struct clk
+ * @node: list_head connecting this clock into the full clock list
+ * @ops: struct clkops * for this clock
+ * @name: the name of the clock in the hardware (used in hwmod data and debug)
+ * @parent: pointer to this clock's parent struct clk
+ * @children: list_head connecting to the child clks' @sibling list_heads
+ * @sibling: list_head connecting this clk to its parent clk's @children
+ * @rate: current clock rate
+ * @enable_reg: register to write to enable the clock (see @enable_bit)
+ * @recalc: fn ptr that returns the clock's current rate
+ * @set_rate: fn ptr that can change the clock's current rate
+ * @round_rate: fn ptr that can round the clock's current rate
+ * @init: fn ptr to do clock-specific initialization
+ * @enable_bit: bitshift to write to enable/disable the clock (see @enable_reg)
+ * @usecount: number of users that have requested this clock to be enabled
+ * @fixed_div: when > 0, this clock's rate is its parent's rate / @fixed_div
+ * @flags: see "struct clk.flags possibilities" above
+ * @rate_offset: bitshift for rate selection bitfield (OMAP1 only)
+ * @src_offset: bitshift for source selection bitfield (OMAP1 only)
+ *
+ * XXX @rate_offset, @src_offset should probably be removed and OMAP1
+ * clock code converted to use clksel.
+ *
+ * XXX @usecount is poorly named.  It should be "enable_count" or
+ * something similar.  "users" in the description refers to kernel
+ * code (core code or drivers) that have called clk_enable() and not
+ * yet called clk_disable(); the usecount of parent clocks is also
+ * incremented by the clock code when clk_enable() is called on child
+ * clocks and decremented by the clock code when clk_disable() is
+ * called on child clocks.
+ *
+ * XXX @clkdm, @usecount, @children, @sibling should be marked for
+ * internal use only.
+ *
+ * @children and @sibling are used to optimize parent-to-child clock
+ * tree traversals.  (child-to-parent traversals use @parent.)
+ *
+ * XXX The notion of the clock's current rate probably needs to be
+ * separated from the clock's target rate.
+ */
+struct clk {
+	struct list_head	node;
+	const struct clkops	*ops;
+	const char		*name;
+	struct clk		*parent;
+	struct list_head	children;
+	struct list_head	sibling;	/* node for children */
+	unsigned long		rate;
+	void __iomem		*enable_reg;
+	unsigned long		(*recalc)(struct clk *);
+	int			(*set_rate)(struct clk *, unsigned long);
+	long			(*round_rate)(struct clk *, unsigned long);
+	void			(*init)(struct clk *);
+	u8			enable_bit;
+	s8			usecount;
+	u8			fixed_div;
+	u8			flags;
+	u8			rate_offset;
+	u8			src_offset;
+#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
+	struct dentry		*dent;	/* For visible tree hierarchy */
+#endif
+};
+
+struct clk_functions {
+	int		(*clk_enable)(struct clk *clk);
+	void		(*clk_disable)(struct clk *clk);
+	long		(*clk_round_rate)(struct clk *clk, unsigned long rate);
+	int		(*clk_set_rate)(struct clk *clk, unsigned long rate);
+	int		(*clk_set_parent)(struct clk *clk, struct clk *parent);
+	void		(*clk_allow_idle)(struct clk *clk);
+	void		(*clk_deny_idle)(struct clk *clk);
+	void		(*clk_disable_unused)(struct clk *clk);
+};
+
+extern int mpurate;
+
+extern int clk_init(struct clk_functions *custom_clocks);
+extern void clk_preinit(struct clk *clk);
+extern int clk_register(struct clk *clk);
+extern void clk_reparent(struct clk *child, struct clk *parent);
+extern void clk_unregister(struct clk *clk);
+extern void propagate_rate(struct clk *clk);
+extern void recalculate_root_clocks(void);
+extern unsigned long followparent_recalc(struct clk *clk);
+extern void clk_enable_init_clocks(void);
+unsigned long omap_fixed_divisor_recalc(struct clk *clk);
+extern struct clk *omap_clk_get_by_name(const char *name);
+extern int omap_clk_enable_autoidle_all(void);
+extern int omap_clk_disable_autoidle_all(void);
+
+extern const struct clkops clkops_null;
+
+extern struct clk dummy_ck;
 
 int omap1_clk_init(void);
 void omap1_clk_late_init(void);