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5928f538 LD |
1 | /* |
2 | * max8973-regulator.h -- MAXIM 8973 regulator | |
3 | * | |
4 | * Interface for regulator driver for MAXIM 8973 DC-DC step-down | |
5 | * switching regulator. | |
6 | * | |
7 | * Copyright (C) 2012 NVIDIA Corporation | |
8 | ||
9 | * Author: Laxman Dewangan <ldewangan@nvidia.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
17 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
19 | * more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License along | |
22 | * with this program; if not, write to the Free Software Foundation, Inc., | |
23 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
24 | * | |
25 | */ | |
26 | ||
27 | #ifndef __LINUX_REGULATOR_MAX8973_H | |
28 | #define __LINUX_REGULATOR_MAX8973_H | |
29 | ||
30 | /* | |
31 | * Control flags for configuration of the device. | |
32 | * Client need to pass this information with ORed | |
33 | */ | |
34 | #define MAX8973_CONTROL_REMOTE_SENSE_ENABLE 0x00000001 | |
35 | #define MAX8973_CONTROL_FALLING_SLEW_RATE_ENABLE 0x00000002 | |
36 | #define MAX8973_CONTROL_OUTPUT_ACTIVE_DISCH_ENABLE 0x00000004 | |
37 | #define MAX8973_CONTROL_BIAS_ENABLE 0x00000008 | |
38 | #define MAX8973_CONTROL_PULL_DOWN_ENABLE 0x00000010 | |
39 | #define MAX8973_CONTROL_FREQ_SHIFT_9PER_ENABLE 0x00000020 | |
40 | ||
41 | #define MAX8973_CONTROL_CLKADV_TRIP_DISABLED 0x00000000 | |
42 | #define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US 0x00010000 | |
43 | #define MAX8973_CONTROL_CLKADV_TRIP_150mV_PER_US 0x00020000 | |
44 | #define MAX8973_CONTROL_CLKADV_TRIP_75mV_PER_US_HIST_DIS 0x00030000 | |
45 | ||
46 | #define MAX8973_CONTROL_INDUCTOR_VALUE_NOMINAL 0x00000000 | |
47 | #define MAX8973_CONTROL_INDUCTOR_VALUE_MINUS_30_PER 0x00100000 | |
48 | #define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_30_PER 0x00200000 | |
49 | #define MAX8973_CONTROL_INDUCTOR_VALUE_PLUS_60_PER 0x00300000 | |
50 | ||
51 | /* | |
52 | * struct max8973_regulator_platform_data - max8973 regulator platform data. | |
53 | * | |
54 | * @reg_init_data: The regulator init data. | |
55 | * @control_flags: Control flags which are ORed value of above flags to | |
56 | * configure device. | |
57 | * @enable_ext_control: Enable the voltage enable/disable through external | |
58 | * control signal from EN input pin. If it is false then | |
59 | * voltage output will be enabled/disabled through EN bit of | |
60 | * device register. | |
61 | * @dvs_gpio: GPIO for dvs. It should be -1 if this is tied with fixed logic. | |
62 | * @dvs_def_state: Default state of dvs. 1 if it is high else 0. | |
63 | */ | |
64 | struct max8973_regulator_platform_data { | |
65 | struct regulator_init_data *reg_init_data; | |
66 | unsigned long control_flags; | |
67 | bool enable_ext_control; | |
68 | int dvs_gpio; | |
69 | unsigned dvs_def_state:1; | |
70 | }; | |
71 | ||
72 | #endif /* __LINUX_REGULATOR_MAX8973_H */ |