LXR linux/arch/arm/mach-msm/clock.h

   1/* arch/arm/mach-msm/clock.h
   2 *
   3 * Copyright (C) 2007 Google, Inc.
   4 * Copyright (c) 2007-2010, Code Aurora Forum. All rights reserved.
   5 *
   6 * This software is licensed under the terms of the GNU General Public
   7 * License version 2, as published by the Free Software Foundation, and
   8 * may be copied, distributed, and modified under those terms.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 */
  16
  17#ifndef __ARCH_ARM_MACH_MSM_CLOCK_H
  18#define __ARCH_ARM_MACH_MSM_CLOCK_H
  19
  20#include <linux/init.h>
  21#include <linux/list.h>
  22#include <mach/clk.h>
  23
  24#define CLKFLAG_INVERT                  0x00000001
  25#define CLKFLAG_NOINVERT                0x00000002
  26#define CLKFLAG_NONEST                  0x00000004
  27#define CLKFLAG_NORESET                 0x00000008
  28
  29#define CLK_FIRST_AVAILABLE_FLAG        0x00000100
  30#define CLKFLAG_AUTO_OFF                0x00000200
  31#define CLKFLAG_MIN                     0x00000400
  32#define CLKFLAG_MAX                     0x00000800
  33
  34struct clk_ops {
  35        int (*enable)(unsigned id);
  36        void (*disable)(unsigned id);
  37        void (*auto_off)(unsigned id);
  38        int (*reset)(unsigned id, enum clk_reset_action action);
  39        int (*set_rate)(unsigned id, unsigned rate);
  40        int (*set_min_rate)(unsigned id, unsigned rate);
  41        int (*set_max_rate)(unsigned id, unsigned rate);
  42        int (*set_flags)(unsigned id, unsigned flags);
  43        unsigned (*get_rate)(unsigned id);
  44        unsigned (*is_enabled)(unsigned id);
  45        long (*round_rate)(unsigned id, unsigned rate);
  46        bool (*is_local)(unsigned id);
  47};
  48
  49struct clk {
  50        uint32_t id;
  51        uint32_t remote_id;
  52        uint32_t count;
  53        uint32_t flags;
  54        struct clk_ops *ops;
  55        const char *dbg_name;
  56        struct list_head list;
  57};
  58
  59#define OFF CLKFLAG_AUTO_OFF
  60#define CLK_MIN CLKFLAG_MIN
  61#define CLK_MAX CLKFLAG_MAX
  62#define CLK_MINMAX (CLK_MIN | CLK_MAX)
  63
  64#ifdef CONFIG_DEBUG_FS
  65int __init clock_debug_init(void);
  66int __init clock_debug_add(struct clk *clock);
  67#else
  68static inline int __init clock_debug_init(void) { return 0; }
  69static inline int __init clock_debug_add(struct clk *clock) { return 0; }
  70#endif
  71
  72#endif
  73