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 int update_gpio;
93 unsigned int software:1;
94 };
95
96 #define WM831X_MAX_STATUS 2
97 #define WM831X_MAX_DCDC 4
98 #define WM831X_MAX_EPE 2
99 #define WM831X_MAX_LDO 11
100 #define WM831X_MAX_ISINK 2
101
102 #define WM831X_GPIO_CONFIGURE 0x10000
103 #define WM831X_GPIO_NUM 16
104
105 struct wm831x_pdata {
106 /** Used to distinguish multiple WM831x chips */
107 int wm831x_num;
108
109 /** Called before subdevices are set up */
110 int (*pre_init)(struct wm831x *wm831x);
111 /** Called after subdevices are set up */
112 int (*post_init)(struct wm831x *wm831x);
113
114 /** Put the /IRQ line into CMOS mode */
115 bool irq_cmos;
116
117 /** Disable the touchscreen */
118 bool disable_touch;
119
120 /** The driver should initiate a power off sequence during shutdown */
121 bool soft_shutdown;
122
123 int irq_base;
124 int gpio_base;
125 int gpio_defaults[WM831X_GPIO_NUM];
126 struct wm831x_backlight_pdata *backlight;
127 struct wm831x_backup_pdata *backup;
128 struct wm831x_battery_pdata *battery;
129 struct wm831x_touch_pdata *touch;
130 struct wm831x_watchdog_pdata *watchdog;
131
132 /** LED1 = 0 and so on */
133 struct wm831x_status_pdata *status[WM831X_MAX_STATUS];
134 /** DCDC1 = 0 and so on */
135 struct regulator_init_data *dcdc[WM831X_MAX_DCDC];
136 /** EPE1 = 0 and so on */
137 struct regulator_init_data *epe[WM831X_MAX_EPE];
138 /** LDO1 = 0 and so on */
139 struct regulator_init_data *ldo[WM831X_MAX_LDO];
140 /** ISINK1 = 0 and so on*/
141 struct regulator_init_data *isink[WM831X_MAX_ISINK];
142 };
143
144 #endif