arch/arm/mach-omap2/omap_opp_data.h

   1 /*
   2  * OMAP SoC specific OPP Data helpers
   3  *
   4  * Copyright (C) 2009-2010 Texas Instruments Incorporated - http://www.ti.com/
   5  *      Nishanth Menon
   6  *      Kevin Hilman
   7  * Copyright (C) 2010 Nokia Corporation.
   8  *      Eduardo Valentin
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  15  * kind, whether express or implied; without even the implied warranty
  16  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  */
  19 #ifndef __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H
  20 #define __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H
  21
  22 #include "omap_hwmod.h"
  23
  24 #include "voltage.h"
  25
  26 /*
  27  * *BIG FAT WARNING*:
  28  * USE the following ONLY in opp data initialization common to an SoC.
  29  * DO NOT USE these in board files/pm core etc.
  30  */
  31
  32 /**
  33  * struct omap_opp_def - OMAP OPP Definition
  34  * @hwmod_name: Name of the hwmod for this domain
  35  * @freq:       Frequency in hertz corresponding to this OPP
  36  * @u_volt:     Nominal voltage in microvolts corresponding to this OPP
  37  * @default_available:  True/false - is this OPP available by default
  38  *
  39  * OMAP SOCs have a standard set of tuples consisting of frequency and voltage
  40  * pairs that the device will support per voltage domain. This is called
  41  * Operating Points or OPP. The actual definitions of OMAP Operating Points
  42  * varies over silicon within the same family of devices. For a specific
  43  * domain, you can have a set of {frequency, voltage} pairs and this is denoted
  44  * by an array of omap_opp_def. As the kernel boots and more information is
  45  * available, a set of these are activated based on the precise nature of
  46  * device the kernel boots up on. It is interesting to remember that each IP
  47  * which belongs to a voltage domain may define their own set of OPPs on top
  48  * of this - but this is handled by the appropriate driver.
  49  */
  50 struct omap_opp_def {
  51         char *hwmod_name;
  52
  53         unsigned long freq;
  54         unsigned long u_volt;
  55
  56         bool default_available;
  57 };
  58
  59 /*
  60  * Initialization wrapper used to define an OPP for OMAP variants.
  61  */
  62 #define OPP_INITIALIZER(_hwmod_name, _enabled, _freq, _uv)      \
  63 {                                                               \
  64         .hwmod_name     = _hwmod_name,                          \
  65         .default_available      = _enabled,                     \
  66         .freq           = _freq,                                \
  67         .u_volt         = _uv,                                  \
  68 }
  69
  70 /*
  71  * Initialization wrapper used to define SmartReflex process data
  72  * XXX Is this needed?  Just use C99 initializers in data files?
  73  */
  74 #define VOLT_DATA_DEFINE(_v_nom, _efuse_offs, _errminlimit, _errgain)  \
  75 {                                                                      \
  76         .volt_nominal   = _v_nom,                                      \
  77         .sr_efuse_offs  = _efuse_offs,                                 \
  78         .sr_errminlimit = _errminlimit,                                \
  79         .vp_errgain     = _errgain                                     \
  80 }
  81
  82 /* Use this to initialize the default table */
  83 extern int __init omap_init_opp_table(struct omap_opp_def *opp_def,
  84                 u32 opp_def_size);
  85
  86
  87 extern struct omap_volt_data omap34xx_vddmpu_volt_data[];
  88 extern struct omap_volt_data omap34xx_vddcore_volt_data[];
  89 extern struct omap_volt_data omap36xx_vddmpu_volt_data[];
  90 extern struct omap_volt_data omap36xx_vddcore_volt_data[];
  91
  92 extern struct omap_volt_data omap443x_vdd_mpu_volt_data[];
  93 extern struct omap_volt_data omap443x_vdd_iva_volt_data[];
  94 extern struct omap_volt_data omap443x_vdd_core_volt_data[];
  95 extern struct omap_volt_data omap446x_vdd_mpu_volt_data[];
  96 extern struct omap_volt_data omap446x_vdd_iva_volt_data[];
  97 extern struct omap_volt_data omap446x_vdd_core_volt_data[];
  98
  99 #endif          /* __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H */