1 files changed, 171 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/clock.h b/arch/arm/mach-tegra/clock.h
new file mode 100644
index 00000000..bc300657
--- /dev/null
+++ b/arch/arm/mach-tegra/clock.h
@@ -0,0 +1,171 @@
+/*
+ * arch/arm/mach-tegra/include/mach/clock.h
+ *
+ * Copyright (C) 2010 Google, Inc.
+ *
+ * Author:
+ *	Colin Cross <ccross@google.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __MACH_TEGRA_CLOCK_H
+#define __MACH_TEGRA_CLOCK_H
+
+#include <linux/clkdev.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+
+#include <mach/clk.h>
+
+#define DIV_BUS			(1 << 0)
+#define DIV_U71			(1 << 1)
+#define DIV_U71_FIXED		(1 << 2)
+#define DIV_2			(1 << 3)
+#define DIV_U16			(1 << 4)
+#define PLL_FIXED		(1 << 5)
+#define PLL_HAS_CPCON		(1 << 6)
+#define MUX			(1 << 7)
+#define PLLD			(1 << 8)
+#define PERIPH_NO_RESET		(1 << 9)
+#define PERIPH_NO_ENB		(1 << 10)
+#define PERIPH_EMC_ENB		(1 << 11)
+#define PERIPH_MANUAL_RESET	(1 << 12)
+#define PLL_ALT_MISC_REG	(1 << 13)
+#define PLLU			(1 << 14)
+#define PLLX                    (1 << 15)
+#define MUX_PWM                 (1 << 16)
+#define MUX8                    (1 << 17)
+#define DIV_U71_UART            (1 << 18)
+#define MUX_CLK_OUT             (1 << 19)
+#define PLLM                    (1 << 20)
+#define DIV_U71_INT             (1 << 21)
+#define DIV_U71_IDLE            (1 << 22)
+#define ENABLE_ON_INIT		(1 << 28)
+#define PERIPH_ON_APB           (1 << 29)
+
+struct clk;
+
+struct clk_mux_sel {
+	struct clk	*input;
+	u32		value;
+};
+
+struct clk_pll_freq_table {
+	unsigned long	input_rate;
+	unsigned long	output_rate;
+	u16		n;
+	u16		m;
+	u8		p;
+	u8		cpcon;
+};
+
+struct clk_ops {
+	void		(*init)(struct clk *);
+	int		(*enable)(struct clk *);
+	void		(*disable)(struct clk *);
+	int		(*set_parent)(struct clk *, struct clk *);
+	int		(*set_rate)(struct clk *, unsigned long);
+	long		(*round_rate)(struct clk *, unsigned long);
+	void		(*reset)(struct clk *, bool);
+	int		(*clk_cfg_ex)(struct clk *,
+				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 */
+	struct clk_lookup	lookup;
+
+#ifdef CONFIG_DEBUG_FS
+	struct dentry		*dent;
+#endif
+	bool			set;
+	struct clk_ops		*ops;
+	unsigned long		rate;
+	unsigned long		max_rate;
+	unsigned long		min_rate;
+	u32			flags;
+	const char		*name;
+
+	u32			refcnt;
+	enum clk_state		state;
+	struct clk		*parent;
+	u32			div;
+	u32			mul;
+
+	const struct clk_mux_sel	*inputs;
+	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;
+
+	spinlock_t spinlock;
+};
+
+struct clk_duplicate {
+	const char *name;
+	struct clk_lookup lookup;
+};
+
+struct tegra_clk_init_table {
+	const char *name;
+	const char *parent;
+	unsigned long rate;
+	bool enabled;
+};
+
+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