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 16struct module; 17 18struct clk { 19 struct list_head node; 20 struct module *owner; 21 const char *name; 22 int id; 23 struct clk *parent; 24 unsigned long rate; 25 __u32 flags; 26 void __iomem *enable_reg; 27 __u8 enable_bit; 28 __u8 rate_offset; 29 __u8 src_offset; 30 __s8 usecount; 31 void (*recalc)(struct clk *); 32 int (*set_rate)(struct clk *, unsigned long); 33 long (*round_rate)(struct clk *, unsigned long); 34 void (*init)(struct clk *); 35 int (*enable)(struct clk *); 36 void (*disable)(struct clk *); 37}; 38 39struct clk_functions { 40 int (*clk_enable)(struct clk *clk); 41 void (*clk_disable)(struct clk *clk); 42 long (*clk_round_rate)(struct clk *clk, unsigned long rate); 43 int (*clk_set_rate)(struct clk *clk, unsigned long rate); 44 int (*clk_set_parent)(struct clk *clk, struct clk *parent); 45 struct clk * (*clk_get_parent)(struct clk *clk); 46 void (*clk_allow_idle)(struct clk *clk); 47 void (*clk_deny_idle)(struct clk *clk); 48 void (*clk_disable_unused)(struct clk *clk); 49}; 50 51extern unsigned int mpurate; 52 53extern int clk_init(struct clk_functions * custom_clocks); 54extern int clk_register(struct clk *clk); 55extern void clk_unregister(struct clk *clk); 56extern void propagate_rate(struct clk *clk); 57extern void followparent_recalc(struct clk * clk); 58extern void clk_allow_idle(struct clk *clk); 59extern void clk_deny_idle(struct clk *clk); 60extern int clk_get_usecount(struct clk *clk); 61 62/* Clock flags */ 63#define RATE_CKCTL (1 << 0) /* Main fixed ratio clocks */ 64#define RATE_FIXED (1 << 1) /* Fixed clock rate */ 65#define RATE_PROPAGATES (1 << 2) /* Program children too */ 66#define VIRTUAL_CLOCK (1 << 3) /* Composite clock from table */ 67#define ALWAYS_ENABLED (1 << 4) /* Clock cannot be disabled */ 68#define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */ 69#define VIRTUAL_IO_ADDRESS (1 << 6) /* Clock in virtual address */ 70#define CLOCK_IDLE_CONTROL (1 << 7) 71#define CLOCK_NO_IDLE_PARENT (1 << 8) 72#define DELAYED_APP (1 << 9) /* Delay application of clock */ 73#define CONFIG_PARTICIPANT (1 << 10) /* Fundamental clock */ 74#define CM_MPU_SEL1 (1 << 11) /* Domain divider/source */ 75#define CM_DSP_SEL1 (1 << 12) 76#define CM_GFX_SEL1 (1 << 13) 77#define CM_MODEM_SEL1 (1 << 14) 78#define CM_CORE_SEL1 (1 << 15) /* Sets divider for many */ 79#define CM_CORE_SEL2 (1 << 16) /* sets parent for GPT */ 80#define CM_WKUP_SEL1 (1 << 17) 81#define CM_PLL_SEL1 (1 << 18) 82#define CM_PLL_SEL2 (1 << 19) 83#define CM_SYSCLKOUT_SEL1 (1 << 20) 84#define CLOCK_IN_OMAP310 (1 << 21) 85#define CLOCK_IN_OMAP730 (1 << 22) 86#define CLOCK_IN_OMAP1510 (1 << 23) 87#define CLOCK_IN_OMAP16XX (1 << 24) 88#define CLOCK_IN_OMAP242X (1 << 25) 89#define CLOCK_IN_OMAP243X (1 << 26) 90 91#endif 92