[ARM] tegra: clock: Add dvfs support, bug fixes, and cleanups

- Add drivers to clock lookup table
- Add new pll_m entries
- Support I2C U16 divider
- Fix rate reporting on 32.768kHz clock
- Call propagate rate only if set_rate succeeds
- Add support for audio_sync clock
- Add 24MHz to PLLA frequency list
- Correct i2s1/2/spdifout mux
- Add suspend support
- Fix enable/disable parent clocks in set_parent
- Add max_rate parameter to all clocks
- DVFS support
- Add virtual cpu clock with dvfs
- Support clk_round_rate
- Fix requesting very high periph frequencies
- Add quirks for PLLU:
   PLLU is slightly different from the rest of the PLLs.  The
   lock enable bit is at bit 22 instead of 18 in the MISC
   register, and the post divider field is a single bit with
   reversed values from other PLLs.
- Simplify recalculating clock rates
- Fix UART divider flags
- Remove unused clock ops

Signed-off-by: Colin Cross <ccross@android.com>

1 files changed, 42 insertions, 16 deletions

diff --git a/arch/arm/mach-tegra/clock.h b/arch/arm/mach-tegra/clock.h
index af7c70e2a3ba..94fd859770f1 100644
--- a/arch/arm/mach-tegra/clock.h
+++ b/arch/arm/mach-tegra/clock.h
@@ -27,18 +27,43 @@
 #define DIV_U71			(1 << 1)
 #define DIV_U71_FIXED		(1 << 2)
 #define DIV_2			(1 << 3)
-#define PLL_FIXED		(1 << 4)
-#define PLL_HAS_CPCON		(1 << 5)
-#define MUX			(1 << 6)
-#define PLLD			(1 << 7)
-#define PERIPH_NO_RESET		(1 << 8)
-#define PERIPH_NO_ENB		(1 << 9)
-#define PERIPH_EMC_ENB		(1 << 10)
-#define PERIPH_MANUAL_RESET	(1 << 11)
-#define PLL_ALT_MISC_REG	(1 << 12)
+#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 ENABLE_ON_INIT		(1 << 28)
 
 struct clk;
+struct regulator;
+
+struct dvfs_table {
+	unsigned long rate;
+	int millivolts;
+};
+
+struct dvfs_process_id_table {
+	int process_id;
+	struct dvfs_table *table;
+};
+
+
+struct dvfs {
+	struct regulator *reg;
+	struct dvfs_table *table;
+	int max_millivolts;
+
+	int process_id_table_length;
+	const char *reg_id;
+	bool cpu;
+	struct dvfs_process_id_table process_id_table[];
+};
 
 struct clk_mux_sel {
 	struct clk	*input;
@@ -58,12 +83,9 @@ struct clk_ops {
 	void		(*init)(struct clk *);
 	int		(*enable)(struct clk *);
 	void		(*disable)(struct clk *);
-	void		(*recalc)(struct clk *);
 	int		(*set_parent)(struct clk *, struct clk *);
 	int		(*set_rate)(struct clk *, unsigned long);
-	unsigned long	(*get_rate)(struct clk *);
 	long		(*round_rate)(struct clk *, unsigned long);
-	unsigned long	(*recalculate_rate)(struct clk *);
 };
 
 enum clk_state {
@@ -85,6 +107,7 @@ struct clk {
 	struct clk			*parent;
 	struct clk_lookup		lookup;
 	unsigned long			rate;
+	unsigned long			max_rate;
 	u32				flags;
 	u32				refcnt;
 	const char			*name;
@@ -103,10 +126,6 @@ struct clk {
 	unsigned long			cf_max;
 	unsigned long			vco_min;
 	unsigned long			vco_max;
-	u32				m;
-	u32				n;
-	u32				p;
-	u32				cpcon;
 	const struct clk_pll_table	*pll_table;
 
 	/* DIV */
@@ -117,6 +136,12 @@ struct clk {
 	const struct clk_mux_sel	*inputs;
 	u32				sel;
 	u32				reg_mask;
+
+	/* Virtual cpu clock */
+	struct clk			*main;
+	struct clk			*backup;
+
+	struct dvfs			*dvfs;
 };
 
 
@@ -141,6 +166,7 @@ unsigned long clk_measure_input_freq(void);
 void clk_disable_locked(struct clk *c);
 int clk_enable_locked(struct clk *c);
 int clk_set_parent_locked(struct clk *c, struct clk *parent);
+int clk_set_rate_locked(struct clk *c, unsigned long rate);
 int clk_reparent(struct clk *c, struct clk *parent);
 void tegra_clk_init_from_table(struct tegra_clk_init_table *table);