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
  30 struct 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
  39 struct smsc_gpio;
  40 struct smsc_keypad;
  41
  42 static 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
  50 static 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 */