arch/arm/mach-tegra/board-harmony-power.c

   1 /*
   2  * Copyright (C) 2010 NVIDIA, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  16  * 02111-1307, USA
  17  */
  18 #include <linux/i2c.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/gpio.h>
  21 #include <linux/io.h>
  22 #include <linux/regulator/machine.h>
  23 #include <linux/mfd/tps6586x.h>
  24
  25 #include <mach/iomap.h>
  26 #include <mach/irqs.h>
  27
  28 #include "board-harmony.h"
  29
  30 #define PMC_CTRL                0x0
  31 #define PMC_CTRL_INTR_LOW       (1 << 17)
  32
  33 static struct regulator_consumer_supply tps658621_ldo0_supply[] = {
  34         REGULATOR_SUPPLY("pex_clk", NULL),
  35 };
  36
  37 static struct regulator_init_data ldo0_data = {
  38         .constraints = {
  39                 .min_uV = 1250 * 1000,
  40                 .max_uV = 3300 * 1000,
  41                 .valid_modes_mask = (REGULATOR_MODE_NORMAL |
  42                                      REGULATOR_MODE_STANDBY),
  43                 .valid_ops_mask = (REGULATOR_CHANGE_MODE |
  44                                    REGULATOR_CHANGE_STATUS |
  45                                    REGULATOR_CHANGE_VOLTAGE),
  46         },
  47         .num_consumer_supplies = ARRAY_SIZE(tps658621_ldo0_supply),
  48         .consumer_supplies = tps658621_ldo0_supply,
  49 };
  50
  51 #define HARMONY_REGULATOR_INIT(_id, _minmv, _maxmv)                     \
  52         static struct regulator_init_data _id##_data = {                \
  53                 .constraints = {                                        \
  54                         .min_uV = (_minmv)*1000,                        \
  55                         .max_uV = (_maxmv)*1000,                        \
  56                         .valid_modes_mask = (REGULATOR_MODE_NORMAL |    \
  57                                              REGULATOR_MODE_STANDBY),   \
  58                         .valid_ops_mask = (REGULATOR_CHANGE_MODE |      \
  59                                            REGULATOR_CHANGE_STATUS |    \
  60                                            REGULATOR_CHANGE_VOLTAGE),   \
  61                 },                                                      \
  62         }
  63
  64 HARMONY_REGULATOR_INIT(sm0, 725, 1500);
  65 HARMONY_REGULATOR_INIT(sm1, 725, 1500);
  66 HARMONY_REGULATOR_INIT(sm2, 3000, 4550);
  67 HARMONY_REGULATOR_INIT(ldo1, 725, 1500);
  68 HARMONY_REGULATOR_INIT(ldo2, 725, 1500);
  69 HARMONY_REGULATOR_INIT(ldo3, 1250, 3300);
  70 HARMONY_REGULATOR_INIT(ldo4, 1700, 2475);
  71 HARMONY_REGULATOR_INIT(ldo5, 1250, 3300);
  72 HARMONY_REGULATOR_INIT(ldo6, 1250, 3300);
  73 HARMONY_REGULATOR_INIT(ldo7, 1250, 3300);
  74 HARMONY_REGULATOR_INIT(ldo8, 1250, 3300);
  75 HARMONY_REGULATOR_INIT(ldo9, 1250, 3300);
  76
  77 #define TPS_REG(_id, _data)                     \
  78         {                                       \
  79                 .id = TPS6586X_ID_##_id,        \
  80                 .name = "tps6586x-regulator",   \
  81                 .platform_data = _data,         \
  82         }
  83
  84 static struct tps6586x_subdev_info tps_devs[] = {
  85         TPS_REG(SM_0, &sm0_data),
  86         TPS_REG(SM_1, &sm1_data),
  87         TPS_REG(SM_2, &sm2_data),
  88         TPS_REG(LDO_0, &ldo0_data),
  89         TPS_REG(LDO_1, &ldo1_data),
  90         TPS_REG(LDO_2, &ldo2_data),
  91         TPS_REG(LDO_3, &ldo3_data),
  92         TPS_REG(LDO_4, &ldo4_data),
  93         TPS_REG(LDO_5, &ldo5_data),
  94         TPS_REG(LDO_6, &ldo6_data),
  95         TPS_REG(LDO_7, &ldo7_data),
  96         TPS_REG(LDO_8, &ldo8_data),
  97         TPS_REG(LDO_9, &ldo9_data),
  98 };
  99
 100 static struct tps6586x_platform_data tps_platform = {
 101         .irq_base       = TEGRA_NR_IRQS,
 102         .num_subdevs    = ARRAY_SIZE(tps_devs),
 103         .subdevs        = tps_devs,
 104         .gpio_base      = HARMONY_GPIO_TPS6586X(0),
 105 };
 106
 107 static struct i2c_board_info __initdata harmony_regulators[] = {
 108         {
 109                 I2C_BOARD_INFO("tps6586x", 0x34),
 110                 .irq            = INT_EXTERNAL_PMU,
 111                 .platform_data  = &tps_platform,
 112         },
 113 };
 114
 115 int __init harmony_regulator_init(void)
 116 {
 117         void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
 118         u32 pmc_ctrl;
 119
 120         /*
 121          * Configure the power management controller to trigger PMU
 122          * interrupts when low
 123          */
 124         pmc_ctrl = readl(pmc + PMC_CTRL);
 125         writel(pmc_ctrl | PMC_CTRL_INTR_LOW, pmc + PMC_CTRL);
 126
 127         i2c_register_board_info(3, harmony_regulators, 1);
 128
 129         return 0;
 130 }