LXR linux/arch/arm/mach-omap2/cm.h

   1/*
   2 * OMAP2+ Clock Management prototypes
   3 *
   4 * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
   5 * Copyright (C) 2007-2009 Nokia Corporation
   6 *
   7 * Written by Paul Walmsley
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License version 2 as
  11 * published by the Free Software Foundation.
  12 */
  13#ifndef __ARCH_ASM_MACH_OMAP2_CM_H
  14#define __ARCH_ASM_MACH_OMAP2_CM_H
  15
  16/*
  17 * MAX_MODULE_READY_TIME: max duration in microseconds to wait for the
  18 * PRCM to request that a module exit the inactive state in the case of
  19 * OMAP2 & 3.
  20 * In the case of OMAP4 this is the max duration in microseconds for the
  21 * module to reach the functionnal state from an inactive state.
  22 */
  23#define MAX_MODULE_READY_TIME           2000
  24
  25# ifndef __ASSEMBLER__
  26#include <linux/clk/ti.h>
  27
  28#include "prcm-common.h"
  29
  30extern struct omap_domain_base cm_base;
  31extern struct omap_domain_base cm2_base;
  32extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2);
  33# endif
  34
  35/*
  36 * MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for
  37 * the PRCM to request that a module enter the inactive state in the
  38 * case of OMAP2 & 3.  In the case of OMAP4 this is the max duration
  39 * in microseconds for the module to reach the inactive state from
  40 * a functional state.
  41 * XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during
  42 * kernel init.
  43 */
  44#define MAX_MODULE_DISABLE_TIME         5000
  45
  46# ifndef __ASSEMBLER__
  47
  48/**
  49 * struct cm_ll_data - fn ptrs to per-SoC CM function implementations
  50 * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
  51 * @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
  52 * @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl
  53 * @module_enable: ptr to the SoC CM-specific module_enable impl
  54 * @module_disable: ptr to the SoC CM-specific module_disable impl
  55 */
  56struct cm_ll_data {
  57        int (*split_idlest_reg)(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
  58                                u8 *idlest_reg_id);
  59        int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg,
  60                                 u8 idlest_shift);
  61        int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg,
  62                                u8 idlest_shift);
  63        void (*module_enable)(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
  64        void (*module_disable)(u8 part, u16 inst, u16 clkctrl_offs);
  65};
  66
  67extern int cm_split_idlest_reg(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
  68                               u8 *idlest_reg_id);
  69int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg,
  70                              u8 idlest_shift);
  71int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg,
  72                             u8 idlest_shift);
  73int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
  74int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs);
  75extern int cm_register(struct cm_ll_data *cld);
  76extern int cm_unregister(struct cm_ll_data *cld);
  77int omap_cm_init(void);
  78int omap2_cm_base_init(void);
  79
  80# endif
  81
  82#endif
  83