aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/plat-omap/include/plat/clock.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/plat-omap/include/plat/clock.h')
-rw-r--r--arch/arm/plat-omap/include/plat/clock.h163
1 files changed, 163 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/clock.h b/arch/arm/plat-omap/include/plat/clock.h
new file mode 100644
index 00000000000..4b8b0d65cbf
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/clock.h
@@ -0,0 +1,163 @@
+/*
+ * arch/arm/plat-omap/include/mach/clock.h
+ *
+ * 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
+ *
+ * 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
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ARCH_ARM_OMAP_CLOCK_H
+#define __ARCH_ARM_OMAP_CLOCK_H
+
+struct module;
+struct clk;
+struct clockdomain;
+
+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 *);
+};
+
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+ defined(CONFIG_ARCH_OMAP4)
+
+struct clksel_rate {
+ u32 val;
+ u8 div;
+ u8 flags;
+};
+
+struct clksel {
+ struct clk *parent;
+ const struct clksel_rate *rates;
+};
+
+struct dpll_data {
+ void __iomem *mult_div1_reg;
+ u32 mult_mask;
+ u32 div1_mask;
+ struct clk *clk_bypass;
+ struct clk *clk_ref;
+ void __iomem *control_reg;
+ u32 enable_mask;
+ unsigned int rate_tolerance;
+ unsigned long last_rounded_rate;
+ u16 last_rounded_m;
+ 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;
+ void __iomem *autoidle_reg;
+ void __iomem *idlest_reg;
+ u32 autoidle_mask;
+ u32 freqsel_mask;
+ u32 idlest_mask;
+ u8 auto_recal_bit;
+ u8 recal_en_bit;
+ u8 recal_st_bit;
+# endif
+};
+
+#endif
+
+struct clk {
+ 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);
+ long (*round_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;
+ void __iomem *clksel_reg;
+ u32 clksel_mask;
+ const struct clksel *clksel;
+ struct dpll_data *dpll_data;
+ const char *clkdm_name;
+ struct clockdomain *clkdm;
+#else
+ __u8 rate_offset;
+ __u8 src_offset;
+#endif
+#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
+ struct dentry *dent; /* For visible tree hierarchy */
+#endif
+};
+
+struct cpufreq_frequency_table;
+
+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);
+#ifdef CONFIG_CPU_FREQ
+ void (*clk_init_cpufreq_table)(struct cpufreq_frequency_table **);
+#endif
+};
+
+extern unsigned 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);
+#ifdef CONFIG_CPU_FREQ
+extern void clk_init_cpufreq_table(struct cpufreq_frequency_table **table);
+#endif
+
+extern const struct clkops clkops_null;
+
+/* 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 */
+/* bits 13-31 are currently free */
+
+/* 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_24XX (RATE_IN_242X | RATE_IN_243X)
+
+
+#endif