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