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
  34 struct 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
  49 struct 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
  65 int __init clock_debug_init(void);
  66 int __init clock_debug_add(struct clk *clock);
  67 #else
  68 static inline int __init clock_debug_init(void) { return 0; }
  69 static inline int __init clock_debug_add(struct clk *clock) { return 0; }
  70 #endif
  71
  72 #endif