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 
13 struct wm831x;
14 struct regulator_init_data;
15 
16 struct wm831x_backlight_pdata {
17 	int isink;     /** ISINK to use, 1 or 2 */
18 	int max_uA;    /** Maximum current to allow */
19 };
20 
21 struct 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 
28 struct 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  */
49 struct 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  */
58 enum 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 
66 struct wm831x_status_pdata {
67 	enum wm831x_status_src default_src;
68 	const char *name;
69 	const char *default_trigger;
70 };
71 
72 struct 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 
83 enum 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 
90 struct 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 
104 struct 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
144