include/asm-arm/arch-omap/clock.h

   1 /*
   2  *  linux/include/asm-arm/arch-omap/clock.h
   3  *
   4  *  Copyright (C) 2004 - 2005 Nokia corporation
   5  *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
   6  *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #ifndef __ARCH_ARM_OMAP_CLOCK_H
  14 #define __ARCH_ARM_OMAP_CLOCK_H
  15
  16 struct module;
  17
  18 struct clk {
  19         struct list_head        node;
  20         struct module           *owner;
  21         const char              *name;
  22         struct clk              *parent;
  23         unsigned long           rate;
  24         __u32                   flags;
  25         void __iomem            *enable_reg;
  26         __u8                    enable_bit;
  27         __u8                    rate_offset;
  28         __u8                    src_offset;
  29         __s8                    usecount;
  30         void                    (*recalc)(struct clk *);
  31         int                     (*set_rate)(struct clk *, unsigned long);
  32         long                    (*round_rate)(struct clk *, unsigned long);
  33         void                    (*init)(struct clk *);
  34         int                     (*enable)(struct clk *);
  35         void                    (*disable)(struct clk *);
  36 };
  37
  38 struct clk_functions {
  39         int             (*clk_enable)(struct clk *clk);
  40         void            (*clk_disable)(struct clk *clk);
  41         int             (*clk_use)(struct clk *clk);
  42         void            (*clk_unuse)(struct clk *clk);
  43         long            (*clk_round_rate)(struct clk *clk, unsigned long rate);
  44         int             (*clk_set_rate)(struct clk *clk, unsigned long rate);
  45         int             (*clk_set_parent)(struct clk *clk, struct clk *parent);
  46         struct clk *    (*clk_get_parent)(struct clk *clk);
  47         void            (*clk_allow_idle)(struct clk *clk);
  48         void            (*clk_deny_idle)(struct clk *clk);
  49 };
  50
  51 extern unsigned int mpurate;
  52 extern struct list_head clocks;
  53 extern spinlock_t clockfw_lock;
  54
  55 extern int clk_init(struct clk_functions * custom_clocks);
  56 extern int clk_register(struct clk *clk);
  57 extern void clk_unregister(struct clk *clk);
  58 extern void propagate_rate(struct clk *clk);
  59 extern void followparent_recalc(struct clk * clk);
  60 extern void clk_allow_idle(struct clk *clk);
  61 extern void clk_deny_idle(struct clk *clk);
  62
  63 /* Clock flags */
  64 #define RATE_CKCTL              (1 << 0)        /* Main fixed ratio clocks */
  65 #define RATE_FIXED              (1 << 1)        /* Fixed clock rate */
  66 #define RATE_PROPAGATES         (1 << 2)        /* Program children too */
  67 #define VIRTUAL_CLOCK           (1 << 3)        /* Composite clock from table */
  68 #define ALWAYS_ENABLED          (1 << 4)        /* Clock cannot be disabled */
  69 #define ENABLE_REG_32BIT        (1 << 5)        /* Use 32-bit access */
  70 #define VIRTUAL_IO_ADDRESS      (1 << 6)        /* Clock in virtual address */
  71 #define CLOCK_IDLE_CONTROL      (1 << 7)
  72 #define CLOCK_NO_IDLE_PARENT    (1 << 8)
  73 #define DELAYED_APP             (1 << 9)        /* Delay application of clock */
  74 #define CONFIG_PARTICIPANT      (1 << 10)       /* Fundamental clock */
  75 #define CM_MPU_SEL1             (1 << 11)       /* Domain divider/source */
  76 #define CM_DSP_SEL1             (1 << 12)
  77 #define CM_GFX_SEL1             (1 << 13)
  78 #define CM_MODEM_SEL1           (1 << 14)
  79 #define CM_CORE_SEL1            (1 << 15)       /* Sets divider for many */
  80 #define CM_CORE_SEL2            (1 << 16)       /* sets parent for GPT */
  81 #define CM_WKUP_SEL1            (1 << 17)
  82 #define CM_PLL_SEL1             (1 << 18)
  83 #define CM_PLL_SEL2             (1 << 19)
  84 #define CM_SYSCLKOUT_SEL1       (1 << 20)
  85 #define CLOCK_IN_OMAP730        (1 << 21)
  86 #define CLOCK_IN_OMAP1510       (1 << 22)
  87 #define CLOCK_IN_OMAP16XX       (1 << 23)
  88 #define CLOCK_IN_OMAP242X       (1 << 24)
  89 #define CLOCK_IN_OMAP243X       (1 << 25)
  90
  91 #endif