LXR linux/include/linux/mfd/wm831x/pdata.h

   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