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Sourav Poddar82843282012-10-01 16:31:22 +05301/*
2 * SMSC ECE1099
3 *
4 * Copyright 2012 Texas Instruments Inc.
5 *
6 * Author: Sourav Poddar <sourav.poddar@ti.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 __LINUX_MFD_SMSC_H
16#define __LINUX_MFD_SMSC_H
17
18#include <linux/regmap.h>
19
20#define SMSC_ID_ECE1099 1
21#define SMSC_NUM_CLIENTS 2
22
23#define SMSC_BASE_ADDR 0x38
24#define OMAP_GPIO_SMSC_IRQ 151
25
26#define SMSC_MAXGPIO 32
27#define SMSC_BANK(offs) ((offs) >> 3)
28#define SMSC_BIT(offs) (1u << ((offs) & 0x7))
29
30struct smsc {
31 struct device *dev;
32 struct i2c_client *i2c_clients[SMSC_NUM_CLIENTS];
33 struct regmap *regmap;
34 int clk;
35 /* Stored chip id */
36 int id;
37};
38
39struct smsc_gpio;
40struct smsc_keypad;
41
42static inline int smsc_read(struct device *child, unsigned int reg,
43 unsigned int *dest)
44{
45 struct smsc *smsc = dev_get_drvdata(child->parent);
46
47 return regmap_read(smsc->regmap, reg, dest);
48}
49
50static inline int smsc_write(struct device *child, unsigned int reg,
51 unsigned int value)
52{
53 struct smsc *smsc = dev_get_drvdata(child->parent);
54
55 return regmap_write(smsc->regmap, reg, value);
56}
57
58/* Registers for SMSC */
59#define SMSC_RESET 0xF5
60#define SMSC_GRP_INT 0xF9
61#define SMSC_CLK_CTRL 0xFA
62#define SMSC_WKUP_CTRL 0xFB
63#define SMSC_DEV_ID 0xFC
64#define SMSC_DEV_REV 0xFD
65#define SMSC_VEN_ID_L 0xFE
66#define SMSC_VEN_ID_H 0xFF
67
68/* CLK VALUE */
69#define SMSC_CLK_VALUE 0x13
70
71/* Registers for function GPIO INPUT */
72#define SMSC_GPIO_DATA_IN_START 0x00
73
74/* Registers for function GPIO OUPUT */
75#define SMSC_GPIO_DATA_OUT_START 0x05
76
77/* Definitions for SMSC GPIO CONFIGURATION REGISTER*/
78#define SMSC_GPIO_INPUT_LOW 0x01
79#define SMSC_GPIO_INPUT_RISING 0x09
80#define SMSC_GPIO_INPUT_FALLING 0x11
81#define SMSC_GPIO_INPUT_BOTH_EDGE 0x19
82#define SMSC_GPIO_OUTPUT_PP 0x21
83#define SMSC_GPIO_OUTPUT_OP 0x31
84
85#define GRP_INT_STAT 0xf9
86#define SMSC_GPI_INT 0x0f
87#define SMSC_CFG_START 0x0A
88
89/* Registers for SMSC GPIO INTERRUPT STATUS REGISTER*/
90#define SMSC_GPIO_INT_STAT_START 0x32
91
92/* Registers for SMSC GPIO INTERRUPT MASK REGISTER*/
93#define SMSC_GPIO_INT_MASK_START 0x37
94
95/* Registers for SMSC function KEYPAD*/
96#define SMSC_KP_OUT 0x40
97#define SMSC_KP_IN 0x41
98#define SMSC_KP_INT_STAT 0x42
99#define SMSC_KP_INT_MASK 0x43
100
101/* Definitions for keypad */
102#define SMSC_KP_KSO 0x70
103#define SMSC_KP_KSI 0x51
104#define SMSC_KSO_ALL_LOW 0x20
105#define SMSC_KP_SET_LOW_PWR 0x0B
106#define SMSC_KP_SET_HIGH 0xFF
107#define SMSC_KSO_EVAL 0x00
108
109#endif /* __LINUX_MFD_SMSC_H */