arch/arm/mach-omap2/voltagedomains44xx_data.c

   1 /*
   2  * OMAP3/OMAP4 Voltage Management Routines
   3  *
   4  * Author: Thara Gopinath       <thara@ti.com>
   5  *
   6  * Copyright (C) 2007 Texas Instruments, Inc.
   7  * Rajendra Nayak <rnayak@ti.com>
   8  * Lesly A M <x0080970@ti.com>
   9  *
  10  * Copyright (C) 2008 Nokia Corporation
  11  * Kalle Jokiniemi
  12  *
  13  * Copyright (C) 2010 Texas Instruments, Inc.
  14  * Thara Gopinath <thara@ti.com>
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License version 2 as
  18  * published by the Free Software Foundation.
  19  */
  20 #include <linux/kernel.h>
  21 #include <linux/err.h>
  22 #include <linux/init.h>
  23
  24 #include "common.h"
  25
  26 #include "prm-regbits-44xx.h"
  27 #include "prm44xx.h"
  28 #include "prcm44xx.h"
  29 #include "prminst44xx.h"
  30 #include "voltage.h"
  31 #include "omap_opp_data.h"
  32 #include "vc.h"
  33 #include "vp.h"
  34
  35 static const struct omap_vfsm_instance omap4_vdd_mpu_vfsm = {
  36         .voltsetup_reg = OMAP4_PRM_VOLTSETUP_MPU_RET_SLEEP_OFFSET,
  37 };
  38
  39 static const struct omap_vfsm_instance omap4_vdd_iva_vfsm = {
  40         .voltsetup_reg = OMAP4_PRM_VOLTSETUP_IVA_RET_SLEEP_OFFSET,
  41 };
  42
  43 static const struct omap_vfsm_instance omap4_vdd_core_vfsm = {
  44         .voltsetup_reg = OMAP4_PRM_VOLTSETUP_CORE_RET_SLEEP_OFFSET,
  45 };
  46
  47 static struct voltagedomain omap4_voltdm_mpu = {
  48         .name = "mpu",
  49         .scalable = true,
  50         .read = omap4_prm_vcvp_read,
  51         .write = omap4_prm_vcvp_write,
  52         .rmw = omap4_prm_vcvp_rmw,
  53         .vc = &omap4_vc_mpu,
  54         .vfsm = &omap4_vdd_mpu_vfsm,
  55         .vp = &omap4_vp_mpu,
  56 };
  57
  58 static struct voltagedomain omap4_voltdm_iva = {
  59         .name = "iva",
  60         .scalable = true,
  61         .read = omap4_prm_vcvp_read,
  62         .write = omap4_prm_vcvp_write,
  63         .rmw = omap4_prm_vcvp_rmw,
  64         .vc = &omap4_vc_iva,
  65         .vfsm = &omap4_vdd_iva_vfsm,
  66         .vp = &omap4_vp_iva,
  67 };
  68
  69 static struct voltagedomain omap4_voltdm_core = {
  70         .name = "core",
  71         .scalable = true,
  72         .read = omap4_prm_vcvp_read,
  73         .write = omap4_prm_vcvp_write,
  74         .rmw = omap4_prm_vcvp_rmw,
  75         .vc = &omap4_vc_core,
  76         .vfsm = &omap4_vdd_core_vfsm,
  77         .vp = &omap4_vp_core,
  78 };
  79
  80 static struct voltagedomain omap4_voltdm_wkup = {
  81         .name = "wakeup",
  82 };
  83
  84 static struct voltagedomain *voltagedomains_omap4[] __initdata = {
  85         &omap4_voltdm_mpu,
  86         &omap4_voltdm_iva,
  87         &omap4_voltdm_core,
  88         &omap4_voltdm_wkup,
  89         NULL,
  90 };
  91
  92 static const char *sys_clk_name __initdata = "sys_clkin_ck";
  93
  94 void __init omap44xx_voltagedomains_init(void)
  95 {
  96         struct voltagedomain *voltdm;
  97         int i;
  98
  99         /*
 100          * XXX Will depend on the process, validation, and binning
 101          * for the currently-running IC
 102          */
 103 #ifdef CONFIG_PM_OPP
 104         omap4_voltdm_mpu.volt_data = omap44xx_vdd_mpu_volt_data;
 105         omap4_voltdm_iva.volt_data = omap44xx_vdd_iva_volt_data;
 106         omap4_voltdm_core.volt_data = omap44xx_vdd_core_volt_data;
 107 #endif
 108
 109         for (i = 0; voltdm = voltagedomains_omap4[i], voltdm; i++)
 110                 voltdm->sys_clk.name = sys_clk_name;
 111
 112         voltdm_init(voltagedomains_omap4);
 113 };