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
  18 struct wm831x;
  19 struct regulator_init_data;
  20
  21 struct wm831x_backlight_pdata {
  22         int isink;     /** ISINK to use, 1 or 2 */
  23         int max_uA;    /** Maximum current to allow */
  24 };
  25
  26 struct wm831x_backup_pdata {
  27         int charger_enable;
  28         int no_constant_voltage;  /** Disable constant voltage charging */
  29         int vlim;   /** Voltage limit in milivolts */
  30         int ilim;   /** Current limit in microamps */
  31 };
  32
  33 struct 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  */
  54 struct 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  */
  64 enum 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
  72 struct wm831x_status_pdata {
  73         enum wm831x_status_src default_src;
  74         const char *name;
  75         const char *default_trigger;
  76 };
  77
  78 struct 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         unsigned int pd_irq;   /** Touch pendown detect IRQ */
  85 };
  86
  87 enum wm831x_watchdog_action {
  88         WM831X_WDOG_NONE = 0,
  89         WM831X_WDOG_INTERRUPT = 1,
  90         WM831X_WDOG_RESET = 2,
  91         WM831X_WDOG_WAKE = 3,
  92 };
  93
  94 struct wm831x_watchdog_pdata {
  95         enum wm831x_watchdog_action primary, secondary;
  96         int update_gpio;
  97         unsigned int software:1;
  98 };
  99
 100 #define WM831X_MAX_STATUS 2
 101 #define WM831X_MAX_DCDC   4
 102 #define WM831X_MAX_EPE    2
 103 #define WM831X_MAX_LDO    11
 104 #define WM831X_MAX_ISINK  2
 105
 106 struct wm831x_pdata {
 107         /** Used to distinguish multiple WM831x chips */
 108         int wm831x_num;
 109
 110         /** Called before subdevices are set up */
 111         int (*pre_init)(struct wm831x *wm831x);
 112         /** Called after subdevices are set up */
 113         int (*post_init)(struct wm831x *wm831x);
 114
 115         /** Put the /IRQ line into CMOS mode */
 116         bool irq_cmos;
 117
 118         int irq_base;
 119         int gpio_base;
 120         struct wm831x_backlight_pdata *backlight;
 121         struct wm831x_backup_pdata *backup;
 122         struct wm831x_battery_pdata *battery;
 123         struct wm831x_touch_pdata *touch;
 124         struct wm831x_watchdog_pdata *watchdog;
 125
 126         /** LED1 = 0 and so on */
 127         struct wm831x_status_pdata *status[WM831X_MAX_STATUS];
 128         /** DCDC1 = 0 and so on */
 129         struct regulator_init_data *dcdc[WM831X_MAX_DCDC];
 130         /** EPE1 = 0 and so on */
 131         struct regulator_init_data *epe[WM831X_MAX_EPE];
 132         /** LDO1 = 0 and so on */
 133         struct regulator_init_data *ldo[WM831X_MAX_LDO];
 134         /** ISINK1 = 0 and so on*/
 135         struct regulator_init_data *isink[WM831X_MAX_ISINK];
 136 };
 137
 138 #endif