ARM: tegra: Add clk_tegra structure and helper functions

Add Tegra platform specific clock structure clk_tegra and
some helper functions for generic clock framework.

struct clk_tegra is the single strcture used for all types of
clocks. reset and cfg_ex ops moved to clk_tegra from clk_ops.

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 80 insertions, 10 deletions

diff --git a/arch/arm/mach-tegra/clock.h b/arch/arm/mach-tegra/clock.h
index bc300657deba..f4d32ba56027 100644
--- a/arch/arm/mach-tegra/clock.h
+++ b/arch/arm/mach-tegra/clock.h
@@ -2,6 +2,7 @@
  * arch/arm/mach-tegra/include/mach/clock.h
  *
  * Copyright (C) 2010 Google, Inc.
+ * Copyright (c) 2012 NVIDIA CORPORATION.  All rights reserved.
  *
  * Author:
  *	Colin Cross <ccross@google.com>
@@ -20,6 +21,7 @@
 #ifndef __MACH_TEGRA_CLOCK_H
 #define __MACH_TEGRA_CLOCK_H
 
+#include <linux/clk-provider.h>
 #include <linux/clkdev.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
@@ -54,6 +56,11 @@
 
 struct clk;
 
+#ifdef CONFIG_COMMON_CLK
+struct clk_tegra;
+#define to_clk_tegra(_hw) container_of(_hw, struct clk_tegra, hw)
+#endif
+
 struct clk_mux_sel {
 	struct clk	*input;
 	u32		value;
@@ -68,6 +75,13 @@ struct clk_pll_freq_table {
 	u8		cpcon;
 };
 
+enum clk_state {
+	UNINITIALIZED = 0,
+	ON,
+	OFF,
+};
+
+#ifndef CONFIG_COMMON_CLK
 struct clk_ops {
 	void		(*init)(struct clk *);
 	int		(*enable)(struct clk *);
@@ -80,12 +94,6 @@ struct clk_ops {
 				enum tegra_clk_ex_param, u32);
 };
 
-enum clk_state {
-	UNINITIALIZED = 0,
-	ON,
-	OFF,
-};
-
 struct clk {
 	/* node for master clocks list */
 	struct list_head	node;		/* node for list of all clocks */
@@ -147,6 +155,65 @@ struct clk {
 	spinlock_t spinlock;
 };
 
+#else
+
+struct clk_tegra {
+	/* node for master clocks list */
+	struct list_head	node;	/* node for list of all clocks */
+	struct clk_lookup	lookup;
+	struct clk_hw		hw;
+
+	bool			set;
+	unsigned long		fixed_rate;
+	unsigned long		max_rate;
+	unsigned long		min_rate;
+	u32			flags;
+	const char		*name;
+
+	enum clk_state		state;
+	u32			div;
+	u32			mul;
+
+	u32				reg;
+	u32				reg_shift;
+
+	struct list_head		shared_bus_list;
+
+	union {
+		struct {
+			unsigned int			clk_num;
+		} periph;
+		struct {
+			unsigned long			input_min;
+			unsigned long			input_max;
+			unsigned long			cf_min;
+			unsigned long			cf_max;
+			unsigned long			vco_min;
+			unsigned long			vco_max;
+			const struct clk_pll_freq_table	*freq_table;
+			int				lock_delay;
+			unsigned long			fixed_rate;
+		} pll;
+		struct {
+			u32				sel;
+			u32				reg_mask;
+		} mux;
+		struct {
+			struct clk			*main;
+			struct clk			*backup;
+		} cpu;
+		struct {
+			struct list_head		node;
+			bool				enabled;
+			unsigned long			rate;
+		} shared_bus_user;
+	} u;
+
+	void (*reset)(struct clk_hw *, bool);
+	int (*clk_cfg_ex)(struct clk_hw *, enum tegra_clk_ex_param, u32);
+};
+#endif /* !CONFIG_COMMON_CLK */
+
 struct clk_duplicate {
 	const char *name;
 	struct clk_lookup lookup;
@@ -159,13 +226,16 @@ struct tegra_clk_init_table {
 	bool enabled;
 };
 
+#ifndef CONFIG_COMMON_CLK
+void clk_init(struct clk *clk);
+unsigned long clk_get_rate_locked(struct clk *c);
+int clk_set_rate_locked(struct clk *c, unsigned long rate);
+int clk_reparent(struct clk *c, struct clk *parent);
+#endif /* !CONFIG_COMMON_CLK */
+
 void tegra2_init_clocks(void);
 void tegra30_init_clocks(void);
-void clk_init(struct clk *clk);
 struct clk *tegra_get_clock_by_name(const char *name);
-int clk_reparent(struct clk *c, struct clk *parent);
 void tegra_clk_init_from_table(struct tegra_clk_init_table *table);
-unsigned long clk_get_rate_locked(struct clk *c);
-int clk_set_rate_locked(struct clk *c, unsigned long rate);
 
 #endif