release/src-rt-6.x.4708/linux/linux-2.6.36/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/list.h>
  21 #include <mach/clk.h>
  22
  23 #include "clock-pcom.h"
  24 #include "clock-7x30.h"
  25
  26 #define CLKFLAG_INVERT                  0x00000001
  27 #define CLKFLAG_NOINVERT                0x00000002
  28 #define CLKFLAG_NONEST                  0x00000004
  29 #define CLKFLAG_NORESET                 0x00000008
  30
  31 #define CLK_FIRST_AVAILABLE_FLAG        0x00000100
  32 #define CLKFLAG_AUTO_OFF                0x00000200
  33 #define CLKFLAG_MIN                     0x00000400
  34 #define CLKFLAG_MAX                     0x00000800
  35
  36 struct clk_ops {
  37         int (*enable)(unsigned id);
  38         void (*disable)(unsigned id);
  39         void (*auto_off)(unsigned id);
  40         int (*reset)(unsigned id, enum clk_reset_action action);
  41         int (*set_rate)(unsigned id, unsigned rate);
  42         int (*set_min_rate)(unsigned id, unsigned rate);
  43         int (*set_max_rate)(unsigned id, unsigned rate);
  44         int (*set_flags)(unsigned id, unsigned flags);
  45         unsigned (*get_rate)(unsigned id);
  46         unsigned (*is_enabled)(unsigned id);
  47         long (*round_rate)(unsigned id, unsigned rate);
  48 };
  49
  50 struct clk {
  51         uint32_t id;
  52         uint32_t remote_id;
  53         uint32_t count;
  54         uint32_t flags;
  55         const char *name;
  56         struct clk_ops *ops;
  57         const char *dbg_name;
  58         struct list_head list;
  59         struct device *dev;
  60 };
  61
  62 #define A11S_CLK_CNTL_ADDR              (MSM_CSR_BASE + 0x100)
  63 #define A11S_CLK_SEL_ADDR               (MSM_CSR_BASE + 0x104)
  64 #define A11S_VDD_SVS_PLEVEL_ADDR        (MSM_CSR_BASE + 0x124)
  65
  66 #ifdef CONFIG_DEBUG_FS
  67 #define CLOCK_DBG_NAME(x) .dbg_name = x,
  68 #else
  69 #define CLOCK_DBG_NAME(x)
  70 #endif
  71
  72 #define CLOCK(clk_name, clk_id, clk_dev, clk_flags) {   \
  73         .name = clk_name, \
  74         .id = clk_id, \
  75         .flags = clk_flags, \
  76         .dev = clk_dev, \
  77          CLOCK_DBG_NAME(#clk_id) \
  78         }
  79
  80 #define OFF CLKFLAG_AUTO_OFF
  81 #define CLK_MIN CLKFLAG_MIN
  82 #define CLK_MAX CLKFLAG_MAX
  83 #define CLK_MINMAX (CLK_MIN | CLK_MAX)
  84 #define NR_CLKS P_NR_CLKS
  85
  86 enum {
  87         PLL_0 = 0,
  88         PLL_1,
  89         PLL_2,
  90         PLL_3,
  91         PLL_4,
  92         PLL_5,
  93         PLL_6,
  94         NUM_PLL
  95 };
  96
  97 enum clkvote_client {
  98         CLKVOTE_ACPUCLK = 0,
  99         CLKVOTE_PMQOS,
 100         CLKVOTE_MAX,
 101 };
 102
 103 int msm_clock_require_tcxo(unsigned long *reason, int nbits);
 104 int msm_clock_get_name(uint32_t id, char *name, uint32_t size);
 105 int ebi1_clk_set_min_rate(enum clkvote_client client, unsigned long rate);
 106 unsigned long clk_get_max_axi_khz(void);
 107
 108 #endif