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
harmony_regulator_init(void)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 }
131