Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * SMSC ECE1099
4 *
5 * Copyright 2012 Texas Instruments Inc.
6 *
7 * Author: Sourav Poddar <sourav.poddar@ti.com>
8 */
9
10#ifndef __LINUX_MFD_SMSC_H
11#define __LINUX_MFD_SMSC_H
12
13#include <linux/regmap.h>
14
15#define SMSC_ID_ECE1099 1
16#define SMSC_NUM_CLIENTS 2
17
18#define SMSC_BASE_ADDR 0x38
19#define OMAP_GPIO_SMSC_IRQ 151
20
21#define SMSC_MAXGPIO 32
22#define SMSC_BANK(offs) ((offs) >> 3)
23#define SMSC_BIT(offs) (1u << ((offs) & 0x7))
24
25struct smsc {
26 struct device *dev;
27 struct i2c_client *i2c_clients[SMSC_NUM_CLIENTS];
28 struct regmap *regmap;
29 int clk;
30 /* Stored chip id */
31 int id;
32};
33
34struct smsc_gpio;
35struct smsc_keypad;
36
37static inline int smsc_read(struct device *child, unsigned int reg,
38 unsigned int *dest)
39{
40 struct smsc *smsc = dev_get_drvdata(child->parent);
41
42 return regmap_read(smsc->regmap, reg, dest);
43}
44
45static inline int smsc_write(struct device *child, unsigned int reg,
46 unsigned int value)
47{
48 struct smsc *smsc = dev_get_drvdata(child->parent);
49
50 return regmap_write(smsc->regmap, reg, value);
51}
52
53/* Registers for SMSC */
54#define SMSC_RESET 0xF5
55#define SMSC_GRP_INT 0xF9
56#define SMSC_CLK_CTRL 0xFA
57#define SMSC_WKUP_CTRL 0xFB
58#define SMSC_DEV_ID 0xFC
59#define SMSC_DEV_REV 0xFD
60#define SMSC_VEN_ID_L 0xFE
61#define SMSC_VEN_ID_H 0xFF
62
63/* CLK VALUE */
64#define SMSC_CLK_VALUE 0x13
65
66/* Registers for function GPIO INPUT */
67#define SMSC_GPIO_DATA_IN_START 0x00
68
69/* Registers for function GPIO OUPUT */
70#define SMSC_GPIO_DATA_OUT_START 0x05
71
72/* Definitions for SMSC GPIO CONFIGURATION REGISTER*/
73#define SMSC_GPIO_INPUT_LOW 0x01
74#define SMSC_GPIO_INPUT_RISING 0x09
75#define SMSC_GPIO_INPUT_FALLING 0x11
76#define SMSC_GPIO_INPUT_BOTH_EDGE 0x19
77#define SMSC_GPIO_OUTPUT_PP 0x21
78#define SMSC_GPIO_OUTPUT_OP 0x31
79
80#define GRP_INT_STAT 0xf9
81#define SMSC_GPI_INT 0x0f
82#define SMSC_CFG_START 0x0A
83
84/* Registers for SMSC GPIO INTERRUPT STATUS REGISTER*/
85#define SMSC_GPIO_INT_STAT_START 0x32
86
87/* Registers for SMSC GPIO INTERRUPT MASK REGISTER*/
88#define SMSC_GPIO_INT_MASK_START 0x37
89
90/* Registers for SMSC function KEYPAD*/
91#define SMSC_KP_OUT 0x40
92#define SMSC_KP_IN 0x41
93#define SMSC_KP_INT_STAT 0x42
94#define SMSC_KP_INT_MASK 0x43
95
96/* Definitions for keypad */
97#define SMSC_KP_KSO 0x70
98#define SMSC_KP_KSI 0x51
99#define SMSC_KSO_ALL_LOW 0x20
100#define SMSC_KP_SET_LOW_PWR 0x0B
101#define SMSC_KP_SET_HIGH 0xFF
102#define SMSC_KSO_EVAL 0x00
103
104#endif /* __LINUX_MFD_SMSC_H */