LXR linux/include/linux/mfd/smsc.h

   1/*
   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 */
 110