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Linux kernel mirror (for testing)
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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_gpio; /** CPU GPIO to use for DVS switching */
51 int dvs_control_src; /** Hardware DVS source to use (1 or 2) */
52 int dvs_init_state; /** DVS state to expect on startup */
53 int dvs_state_gpio; /** CPU GPIO to use for monitoring status */
54};
55
56/* Sources for status LED configuration. Values are register values
57 * plus 1 to allow for a zero default for preserve.
58 */
59enum wm831x_status_src {
60 WM831X_STATUS_PRESERVE = 0, /* Keep the current hardware setting */
61 WM831X_STATUS_OTP = 1,
62 WM831X_STATUS_POWER = 2,
63 WM831X_STATUS_CHARGER = 3,
64 WM831X_STATUS_MANUAL = 4,
65};
66
67struct wm831x_status_pdata {
68 enum wm831x_status_src default_src;
69 const char *name;
70 const char *default_trigger;
71};
72
73struct wm831x_touch_pdata {
74 int fivewire; /** 1 for five wire mode, 0 for 4 wire */
75 int isel; /** Current for pen down (uA) */
76 int rpu; /** Pen down sensitivity resistor divider */
77 int pressure; /** Report pressure (boolean) */
78 unsigned int data_irq; /** Touch data ready IRQ */
79 int data_irqf; /** IRQ flags for data ready IRQ */
80 unsigned int pd_irq; /** Touch pendown detect IRQ */
81 int pd_irqf; /** IRQ flags for pen down IRQ */
82};
83
84enum wm831x_watchdog_action {
85 WM831X_WDOG_NONE = 0,
86 WM831X_WDOG_INTERRUPT = 1,
87 WM831X_WDOG_RESET = 2,
88 WM831X_WDOG_WAKE = 3,
89};
90
91struct wm831x_watchdog_pdata {
92 enum wm831x_watchdog_action primary, secondary;
93 int update_gpio;
94 unsigned int software:1;
95};
96
97#define WM831X_MAX_STATUS 2
98#define WM831X_MAX_DCDC 4
99#define WM831X_MAX_EPE 2
100#define WM831X_MAX_LDO 11
101#define WM831X_MAX_ISINK 2
102
103#define WM831X_GPIO_CONFIGURE 0x10000
104#define WM831X_GPIO_NUM 16
105
106struct 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 /** Disable the touchscreen */
119 bool disable_touch;
120
121 /** The driver should initiate a power off sequence during shutdown */
122 bool soft_shutdown;
123
124 int irq_base;
125 int gpio_base;
126 int gpio_defaults[WM831X_GPIO_NUM];
127 struct wm831x_backlight_pdata *backlight;
128 struct wm831x_backup_pdata *backup;
129 struct wm831x_battery_pdata *battery;
130 struct wm831x_touch_pdata *touch;
131 struct wm831x_watchdog_pdata *watchdog;
132
133 /** LED1 = 0 and so on */
134 struct wm831x_status_pdata *status[WM831X_MAX_STATUS];
135 /** DCDC1 = 0 and so on */
136 struct regulator_init_data *dcdc[WM831X_MAX_DCDC];
137 /** EPE1 = 0 and so on */
138 struct regulator_init_data *epe[WM831X_MAX_EPE];
139 /** LDO1 = 0 and so on */
140 struct regulator_init_data *ldo[WM831X_MAX_LDO];
141 /** ISINK1 = 0 and so on*/
142 struct regulator_init_data *isink[WM831X_MAX_ISINK];
143};
144
145#endif