pdata.h

  1/* SPDX-License-Identifier: GPL-2.0-or-later */
  2/*
  3 * include/linux/mfd/wm831x/pdata.h -- Platform data for WM831x
  4 *
  5 * Copyright 2009 Wolfson Microelectronics PLC.
  6 *
  7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  8 */
  9
 10#ifndef __MFD_WM831X_PDATA_H__
 11#define __MFD_WM831X_PDATA_H__
 12
 13struct wm831x;
 14struct regulator_init_data;
 15
 16struct wm831x_backlight_pdata {
 17	int isink;     /** ISINK to use, 1 or 2 */
 18	int max_uA;    /** Maximum current to allow */
 19};
 20
 21struct wm831x_backup_pdata {
 22	int charger_enable;
 23	int no_constant_voltage;  /** Disable constant voltage charging */
 24	int vlim;   /** Voltage limit in millivolts */
 25	int ilim;   /** Current limit in microamps */
 26};
 27
 28struct wm831x_battery_pdata {
 29	int enable;         /** Enable charging */
 30	int fast_enable;    /** Enable fast charging */
 31	int off_mask;       /** Mask OFF while charging */
 32	int trickle_ilim;   /** Trickle charge current limit, in mA */
 33	int vsel;           /** Target voltage, in mV */
 34	int eoc_iterm;      /** End of trickle charge current, in mA */
 35	int fast_ilim;      /** Fast charge current limit, in mA */
 36	int timeout;        /** Charge cycle timeout, in minutes */
 37};
 38
 39/**
 40 * Configuration for the WM831x DC-DC BuckWise convertors.  This
 41 * should be passed as driver_data in the regulator_init_data.
 42 *
 43 * Currently all the configuration is for the fast DVS switching
 44 * support of the devices.  This allows MFPs on the device to be
 45 * configured as an input to switch between two output voltages,
 46 * allowing voltage transitions without the expense of an access over
 47 * I2C or SPI buses.
 48 */
 49struct wm831x_buckv_pdata {
 50	int dvs_control_src; /** Hardware DVS source to use (1 or 2) */
 51	int dvs_init_state;  /** DVS state to expect on startup */
 52	int dvs_state_gpio;  /** CPU GPIO to use for monitoring status */
 53};
 54
 55/* Sources for status LED configuration.  Values are register values
 56 * plus 1 to allow for a zero default for preserve.
 57 */
 58enum wm831x_status_src {
 59	WM831X_STATUS_PRESERVE = 0,  /* Keep the current hardware setting */
 60	WM831X_STATUS_OTP = 1,
 61	WM831X_STATUS_POWER = 2,
 62	WM831X_STATUS_CHARGER = 3,
 63	WM831X_STATUS_MANUAL = 4,
 64};
 65
 66struct wm831x_status_pdata {
 67	enum wm831x_status_src default_src;
 68	const char *name;
 69	const char *default_trigger;
 70};
 71
 72struct wm831x_touch_pdata {
 73	int fivewire;          /** 1 for five wire mode, 0 for 4 wire */
 74	int isel;              /** Current for pen down (uA) */
 75	int rpu;               /** Pen down sensitivity resistor divider */
 76	int pressure;          /** Report pressure (boolean) */
 77	unsigned int data_irq; /** Touch data ready IRQ */
 78	int data_irqf;         /** IRQ flags for data ready IRQ */
 79	unsigned int pd_irq;   /** Touch pendown detect IRQ */
 80	int pd_irqf;           /** IRQ flags for pen down IRQ */
 81};
 82
 83enum wm831x_watchdog_action {
 84	WM831X_WDOG_NONE = 0,
 85	WM831X_WDOG_INTERRUPT = 1,
 86	WM831X_WDOG_RESET = 2,
 87	WM831X_WDOG_WAKE = 3,
 88};
 89
 90struct wm831x_watchdog_pdata {
 91	enum wm831x_watchdog_action primary, secondary;
 92	unsigned int software:1;
 93};
 94
 95#define WM831X_MAX_STATUS 2
 96#define WM831X_MAX_DCDC   4
 97#define WM831X_MAX_EPE    2
 98#define WM831X_MAX_LDO    11
 99#define WM831X_MAX_ISINK  2
100
101#define WM831X_GPIO_CONFIGURE 0x10000
102#define WM831X_GPIO_NUM 16
103
104struct wm831x_pdata {
105	/** Used to distinguish multiple WM831x chips */
106	int wm831x_num;
107
108	/** Called before subdevices are set up */
109	int (*pre_init)(struct wm831x *wm831x);
110	/** Called after subdevices are set up */
111	int (*post_init)(struct wm831x *wm831x);
112
113	/** Put the /IRQ line into CMOS mode */
114	bool irq_cmos;
115
116	/** Disable the touchscreen */
117	bool disable_touch;
118
119	/** The driver should initiate a power off sequence during shutdown */
120	bool soft_shutdown;
121
122	int irq_base;
123	int gpio_base;
124	int gpio_defaults[WM831X_GPIO_NUM];
125	struct wm831x_backlight_pdata *backlight;
126	struct wm831x_backup_pdata *backup;
127	struct wm831x_battery_pdata *battery;
128	struct wm831x_touch_pdata *touch;
129	struct wm831x_watchdog_pdata *watchdog;
130
131	/** LED1 = 0 and so on */
132	struct wm831x_status_pdata *status[WM831X_MAX_STATUS];
133	/** DCDC1 = 0 and so on */
134	struct regulator_init_data *dcdc[WM831X_MAX_DCDC];
135	/** EPE1 = 0 and so on */
136	struct regulator_init_data *epe[WM831X_MAX_EPE];
137	/** LDO1 = 0 and so on */
138	struct regulator_init_data *ldo[WM831X_MAX_LDO];
139	/** ISINK1 = 0 and so on*/
140	struct regulator_init_data *isink[WM831X_MAX_ISINK];
141};
142
143#endif