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/regulator/machine.h>
  22 #include <linux/regulator/fixed.h>
  23 #include <linux/mfd/tps6586x.h>
  24 #include <linux/of.h>
  25 #include <linux/of_i2c.h>
  26
  27 #include <asm/mach-types.h>
  28
  29 #include <mach/irqs.h>
  30
  31 #include "board-harmony.h"
  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         .supply_regulator = "vdd_sm2",
  39         .constraints = {
  40                 .name = "vdd_ldo0",
  41                 .min_uV = 3300 * 1000,
  42                 .max_uV = 3300 * 1000,
  43                 .valid_modes_mask = (REGULATOR_MODE_NORMAL |
  44                                      REGULATOR_MODE_STANDBY),
  45                 .valid_ops_mask = (REGULATOR_CHANGE_MODE |
  46                                    REGULATOR_CHANGE_STATUS |
  47                                    REGULATOR_CHANGE_VOLTAGE),
  48                 .apply_uV = 1,
  49         },
  50         .num_consumer_supplies = ARRAY_SIZE(tps658621_ldo0_supply),
  51         .consumer_supplies = tps658621_ldo0_supply,
  52 };
  53
  54 #define HARMONY_REGULATOR_INIT(_id, _name, _supply, _minmv, _maxmv, _on)\
  55         static struct regulator_init_data _id##_data = {                \
  56                 .supply_regulator = _supply,                            \
  57                 .constraints = {                                        \
  58                         .name = _name,                                  \
  59                         .min_uV = (_minmv)*1000,                        \
  60                         .max_uV = (_maxmv)*1000,                        \
  61                         .valid_modes_mask = (REGULATOR_MODE_NORMAL |    \
  62                                              REGULATOR_MODE_STANDBY),   \
  63                         .valid_ops_mask = (REGULATOR_CHANGE_MODE |      \
  64                                            REGULATOR_CHANGE_STATUS |    \
  65                                            REGULATOR_CHANGE_VOLTAGE),   \
  66                         .always_on = _on,                               \
  67                 },                                                      \
  68         }
  69
  70 HARMONY_REGULATOR_INIT(sm0,  "vdd_sm0",  "vdd_sys", 725, 1500, 1);
  71 HARMONY_REGULATOR_INIT(sm1,  "vdd_sm1",  "vdd_sys", 725, 1500, 1);
  72 HARMONY_REGULATOR_INIT(sm2,  "vdd_sm2",  "vdd_sys", 3000, 4550, 1);
  73 HARMONY_REGULATOR_INIT(ldo1, "vdd_ldo1", "vdd_sm2", 725, 1500, 1);
  74 HARMONY_REGULATOR_INIT(ldo2, "vdd_ldo2", "vdd_sm2", 725, 1500, 0);
  75 HARMONY_REGULATOR_INIT(ldo3, "vdd_ldo3", "vdd_sm2", 1250, 3300, 1);
  76 HARMONY_REGULATOR_INIT(ldo4, "vdd_ldo4", "vdd_sm2", 1700, 2475, 1);
  77 HARMONY_REGULATOR_INIT(ldo5, "vdd_ldo5", NULL,      1250, 3300, 1);
  78 HARMONY_REGULATOR_INIT(ldo6, "vdd_ldo6", "vdd_sm2", 1250, 3300, 0);
  79 HARMONY_REGULATOR_INIT(ldo7, "vdd_ldo7", "vdd_sm2", 1250, 3300, 0);
  80 HARMONY_REGULATOR_INIT(ldo8, "vdd_ldo8", "vdd_sm2", 1250, 3300, 0);
  81 HARMONY_REGULATOR_INIT(ldo9, "vdd_ldo9", "vdd_sm2", 1250, 3300, 1);
  82
  83 #define TPS_REG(_id, _data)                     \
  84         {                                       \
  85                 .id = TPS6586X_ID_##_id,        \
  86                 .name = "tps6586x-regulator",   \
  87                 .platform_data = _data,         \
  88         }
  89
  90 static struct tps6586x_subdev_info tps_devs[] = {
  91         TPS_REG(SM_0, &sm0_data),
  92         TPS_REG(SM_1, &sm1_data),
  93         TPS_REG(SM_2, &sm2_data),
  94         TPS_REG(LDO_0, &ldo0_data),
  95         TPS_REG(LDO_1, &ldo1_data),
  96         TPS_REG(LDO_2, &ldo2_data),
  97         TPS_REG(LDO_3, &ldo3_data),
  98         TPS_REG(LDO_4, &ldo4_data),
  99         TPS_REG(LDO_5, &ldo5_data),
 100         TPS_REG(LDO_6, &ldo6_data),
 101         TPS_REG(LDO_7, &ldo7_data),
 102         TPS_REG(LDO_8, &ldo8_data),
 103         TPS_REG(LDO_9, &ldo9_data),
 104 };
 105
 106 static struct tps6586x_platform_data tps_platform = {
 107         .irq_base       = TEGRA_NR_IRQS,
 108         .num_subdevs    = ARRAY_SIZE(tps_devs),
 109         .subdevs        = tps_devs,
 110         .gpio_base      = HARMONY_GPIO_TPS6586X(0),
 111 };
 112
 113 static struct i2c_board_info __initdata harmony_regulators[] = {
 114         {
 115                 I2C_BOARD_INFO("tps6586x", 0x34),
 116                 .irq            = INT_EXTERNAL_PMU,
 117                 .platform_data  = &tps_platform,
 118         },
 119 };
 120
 121 int __init harmony_regulator_init(void)
 122 {
 123         regulator_register_always_on(0, "vdd_sys",
 124                 NULL, 0, 5000000);
 125
 126         if (machine_is_harmony()) {
 127                 i2c_register_board_info(3, harmony_regulators, 1);
 128         } else { /* Harmony, booted using device tree */
 129                 struct device_node *np;
 130                 struct i2c_adapter *adapter;
 131
 132                 np = of_find_node_by_path("/i2c@7000d000");
 133                 if (np == NULL) {
 134                         pr_err("Could not find device_node for DVC I2C\n");
 135                         return -ENODEV;
 136                 }
 137
 138                 adapter = of_find_i2c_adapter_by_node(np);
 139                 if (!adapter) {
 140                         pr_err("Could not find i2c_adapter for DVC I2C\n");
 141                         return -ENODEV;
 142                 }
 143
 144                 i2c_new_device(adapter, harmony_regulators);
 145         }
 146
 147         return 0;
 148 }