1/*
2 * include/linux/mfd/wm831x/pdata.h -- Platform data for WM831x
3 *
4 * Copyright 2009 Wolfson Microelectronics PLC.
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 */
14
15#ifndef __MFD_WM831X_PDATA_H__
16#define __MFD_WM831X_PDATA_H__
17
18struct wm831x;
19struct regulator_init_data;
20
21struct wm831x_backlight_pdata {
22 int isink; /** ISINK to use, 1 or 2 */
23 int max_uA; /** Maximum current to allow */
24};
25
26struct wm831x_backup_pdata {
27 int charger_enable;
28 int no_constant_voltage; /** Disable constant voltage charging */
29 int vlim; /** Voltage limit in millivolts */
30 int ilim; /** Current limit in microamps */
31};
32
33struct wm831x_battery_pdata {
34 int enable; /** Enable charging */
35 int fast_enable; /** Enable fast charging */
36 int off_mask; /** Mask OFF while charging */
37 int trickle_ilim; /** Trickle charge current limit, in mA */
38 int vsel; /** Target voltage, in mV */
39 int eoc_iterm; /** End of trickle charge current, in mA */
40 int fast_ilim; /** Fast charge current limit, in mA */
41 int timeout; /** Charge cycle timeout, in minutes */
42};
43
44/**
45 * Configuration for the WM831x DC-DC BuckWise convertors. This
46 * should be passed as driver_data in the regulator_init_data.
47 *
48 * Currently all the configuration is for the fast DVS switching
49 * support of the devices. This allows MFPs on the device to be
50 * configured as an input to switch between two output voltages,
51 * allowing voltage transitions without the expense of an access over
52 * I2C or SPI buses.
53 */
54struct wm831x_buckv_pdata {
55 int dvs_gpio; /** CPU GPIO to use for DVS switching */
56 int dvs_control_src; /** Hardware DVS source to use (1 or 2) */
57 int dvs_init_state; /** DVS state to expect on startup */
58 int dvs_state_gpio; /** CPU GPIO to use for monitoring status */
59};
60
61/* Sources for status LED configuration. Values are register values
62 * plus 1 to allow for a zero default for preserve.
63 */
64enum wm831x_status_src {
65 WM831X_STATUS_PRESERVE = 0, /* Keep the current hardware setting */
66 WM831X_STATUS_OTP = 1,
67 WM831X_STATUS_POWER = 2,
68 WM831X_STATUS_CHARGER = 3,
69 WM831X_STATUS_MANUAL = 4,
70};
71
72struct wm831x_status_pdata {
73 enum wm831x_status_src default_src;
74 const char *name;
75 const char *default_trigger;
76};
77
78struct wm831x_touch_pdata {
79 int fivewire; /** 1 for five wire mode, 0 for 4 wire */
80 int isel; /** Current for pen down (uA) */
81 int rpu; /** Pen down sensitivity resistor divider */
82 int pressure; /** Report pressure (boolean) */
83 unsigned int data_irq; /** Touch data ready IRQ */
84 int data_irqf; /** IRQ flags for data ready IRQ */
85 unsigned int pd_irq; /** Touch pendown detect IRQ */
86 int pd_irqf; /** IRQ flags for pen down IRQ */
87};
88
89enum wm831x_watchdog_action {
90 WM831X_WDOG_NONE = 0,
91 WM831X_WDOG_INTERRUPT = 1,
92 WM831X_WDOG_RESET = 2,
93 WM831X_WDOG_WAKE = 3,
94};
95
96struct wm831x_watchdog_pdata {
97 enum wm831x_watchdog_action primary, secondary;
98 int update_gpio;
99 unsigned int software:1;
100};
101
102#define WM831X_MAX_STATUS 2
103#define WM831X_MAX_DCDC 4
104#define WM831X_MAX_EPE 2
105#define WM831X_MAX_LDO 11
106#define WM831X_MAX_ISINK 2
107
108#define WM831X_GPIO_CONFIGURE 0x10000
109#define WM831X_GPIO_NUM 16
110
111struct wm831x_pdata {
112 /** Used to distinguish multiple WM831x chips */
113 int wm831x_num;
114
115 /** Called before subdevices are set up */
116 int (*pre_init)(struct wm831x *wm831x);
117 /** Called after subdevices are set up */
118 int (*post_init)(struct wm831x *wm831x);
119
120 /** Put the /IRQ line into CMOS mode */
121 bool irq_cmos;
122
123 /** Disable the touchscreen */
124 bool disable_touch;
125
126 /** The driver should initiate a power off sequence during shutdown */
127 bool soft_shutdown;
128
129 int irq_base;
130 int gpio_base;
131 int gpio_defaults[WM831X_GPIO_NUM];
132 struct wm831x_backlight_pdata *backlight;
133 struct wm831x_backup_pdata *backup;
134 struct wm831x_battery_pdata *battery;
135 struct wm831x_touch_pdata *touch;
136 struct wm831x_watchdog_pdata *watchdog;
137
138 /** LED1 = 0 and so on */
139 struct wm831x_status_pdata *status[WM831X_MAX_STATUS];
140 /** DCDC1 = 0 and so on */
141 struct regulator_init_data *dcdc[WM831X_MAX_DCDC];
142 /** EPE1 = 0 and so on */
143 struct regulator_init_data *epe[WM831X_MAX_EPE];
144 /** LDO1 = 0 and so on */
145 struct regulator_init_data *ldo[WM831X_MAX_LDO];
146 /** ISINK1 = 0 and so on*/
147 struct regulator_init_data *isink[WM831X_MAX_ISINK];
148};
149
150#endif
151