/*
- * arch/arm/plat-omap/include/mach/clock.h
+ * OMAP clock: data structure definitions, function prototypes, shared macros
*
- * Copyright (C) 2004 - 2005 Nokia corporation
- * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
- * Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
+ * Copyright (C) 2004-2005, 2008-2010 Nokia Corporation
+ * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
+ * Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
*
* 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
struct clkops {
int (*enable)(struct clk *);
void (*disable)(struct clk *);
- void (*find_idlest)(struct clk *, void __iomem **, u8 *);
- void (*find_companion)(struct clk *, void __iomem **, u8 *);
+ void (*find_idlest)(struct clk *, void __iomem **,
+ u8 *, u8 *);
+ void (*find_companion)(struct clk *, void __iomem **,
+ u8 *);
};
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
- defined(CONFIG_ARCH_OMAP4)
+#ifdef CONFIG_ARCH_OMAP2PLUS
struct clksel_rate {
u32 val;
const struct clksel_rate *rates;
};
+/**
+ * struct dpll_data - DPLL registers and integration data
+ * @mult_div1_reg: register containing the DPLL M and N bitfields
+ * @mult_mask: mask of the DPLL M bitfield in @mult_div1_reg
+ * @div1_mask: mask of the DPLL N bitfield in @mult_div1_reg
+ * @clk_bypass: struct clk pointer to the clock's bypass clock input
+ * @clk_ref: struct clk pointer to the clock's reference clock input
+ * @control_reg: register containing the DPLL mode bitfield
+ * @enable_mask: mask of the DPLL mode bitfield in @control_reg
+ * @rate_tolerance: maximum variance allowed from target rate (in Hz)
+ * @last_rounded_rate: cache of the last rate result of omap2_dpll_round_rate()
+ * @last_rounded_m: cache of the last M result of omap2_dpll_round_rate()
+ * @max_multiplier: maximum valid non-bypass multiplier value (actual)
+ * @last_rounded_n: cache of the last N result of omap2_dpll_round_rate()
+ * @min_divider: minimum valid non-bypass divider value (actual)
+ * @max_divider: maximum valid non-bypass divider value (actual)
+ * @modes: possible values of @enable_mask
+ * @autoidle_reg: register containing the DPLL autoidle mode bitfield
+ * @idlest_reg: register containing the DPLL idle status bitfield
+ * @autoidle_mask: mask of the DPLL autoidle mode bitfield in @autoidle_reg
+ * @freqsel_mask: mask of the DPLL jitter correction bitfield in @control_reg
+ * @idlest_mask: mask of the DPLL idle status bitfield in @idlest_reg
+ * @auto_recal_bit: bitshift of the driftguard enable bit in @control_reg
+ * @recal_en_bit: bitshift of the PRM_IRQENABLE_* bit for recalibration IRQs
+ * @recal_st_bit: bitshift of the PRM_IRQSTATUS_* bit for recalibration IRQs
+ * @flags: DPLL type/features (see below)
+ *
+ * Possible values for @flags:
+ * DPLL_J_TYPE: "J-type DPLL" (only some 36xx, 4xxx DPLLs)
+ * NO_DCO_SEL: don't program DCO (only for some J-type DPLLs)
+
+ * @freqsel_mask is only used on the OMAP34xx family and AM35xx.
+ *
+ * XXX Some DPLLs have multiple bypass inputs, so it's not technically
+ * correct to only have one @clk_bypass pointer.
+ *
+ * XXX @rate_tolerance should probably be deprecated - currently there
+ * don't seem to be any usecases for DPLL rounding that is not exact.
+ *
+ * XXX The runtime-variable fields (@last_rounded_rate, @last_rounded_m,
+ * @last_rounded_n) should be separated from the runtime-fixed fields
+ * and placed into a differenct structure, so that the runtime-fixed data
+ * can be placed into read-only space.
+ */
struct dpll_data {
void __iomem *mult_div1_reg;
u32 mult_mask;
unsigned int rate_tolerance;
unsigned long last_rounded_rate;
u16 last_rounded_m;
+ u16 max_multiplier;
u8 last_rounded_n;
u8 min_divider;
u8 max_divider;
- u32 max_tolerance;
- u16 max_multiplier;
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
u8 modes;
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
void __iomem *autoidle_reg;
void __iomem *idlest_reg;
u32 autoidle_mask;
u8 auto_recal_bit;
u8 recal_en_bit;
u8 recal_st_bit;
+ u8 flags;
# endif
};
struct list_head node;
const struct clkops *ops;
const char *name;
- int id;
struct clk *parent;
struct list_head children;
struct list_head sibling; /* node for children */
unsigned long rate;
- __u32 flags;
void __iomem *enable_reg;
unsigned long (*recalc)(struct clk *);
int (*set_rate)(struct clk *, unsigned long);
void (*init)(struct clk *);
__u8 enable_bit;
__s8 usecount;
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
- defined(CONFIG_ARCH_OMAP4)
u8 fixed_div;
+ u8 flags;
+#ifdef CONFIG_ARCH_OMAP2PLUS
void __iomem *clksel_reg;
u32 clksel_mask;
const struct clksel *clksel;
#endif
};
-extern unsigned int mpurate;
+extern int mpurate;
extern int clk_init(struct clk_functions *custom_clocks);
extern void clk_preinit(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);
#ifdef CONFIG_CPU_FREQ
extern void clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
extern void clk_exit_cpufreq_table(struct cpufreq_frequency_table **table);
#endif
+extern struct clk *omap_clk_get_by_name(const char *name);
extern const struct clkops clkops_null;
+extern struct clk dummy_ck;
+
/* Clock flags */
-/* bit 0 is free */
-#define RATE_FIXED (1 << 1) /* Fixed clock rate */
-/* bits 2-4 are free */
-#define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */
-#define CLOCK_IDLE_CONTROL (1 << 7)
-#define CLOCK_NO_IDLE_PARENT (1 << 8)
-#define DELAYED_APP (1 << 9) /* Delay application of clock */
-#define CONFIG_PARTICIPANT (1 << 10) /* Fundamental clock */
-#define ENABLE_ON_INIT (1 << 11) /* Enable upon framework init */
-#define INVERT_ENABLE (1 << 12) /* 0 enables, 1 disables */
-#define CLOCK_IN_OMAP4430 (1 << 13)
-#define ALWAYS_ENABLED (1 << 14)
-/* bits 13-31 are currently free */
+#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 */
/* Clksel_rate flags */
-#define DEFAULT_RATE (1 << 0)
-#define RATE_IN_242X (1 << 1)
-#define RATE_IN_243X (1 << 2)
-#define RATE_IN_343X (1 << 3) /* rates common to all 343X */
-#define RATE_IN_3430ES2 (1 << 4) /* 3430ES2 rates only */
-#define RATE_IN_4430 (1 << 5)
+#define RATE_IN_242X (1 << 0)
+#define RATE_IN_243X (1 << 1)
+#define RATE_IN_3XXX (1 << 2) /* rates common to all OMAP3 */
+#define RATE_IN_3430ES2 (1 << 3) /* 3430ES2 rates only */
+#define RATE_IN_36XX (1 << 4)
+#define RATE_IN_4430 (1 << 5)
#define RATE_IN_24XX (RATE_IN_242X | RATE_IN_243X)
+#define RATE_IN_3430ES2PLUS (RATE_IN_3430ES2 | RATE_IN_36XX)
#endif
git.openpandora.org / pandora-kernel.git / blobdiff