include/linux/mfd/smsc.h

   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
  25 struct 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
  34 struct smsc_gpio;
  35 struct smsc_keypad;
  36
  37 static 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
  45 static 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 */