LXR linux/drivers/iio/pressure/bmp280-regmap.c

   1#include <linux/device.h>
   2#include <linux/module.h>
   3#include <linux/regmap.h>
   4
   5#include "bmp280.h"
   6
   7static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg)
   8{
   9        switch (reg) {
  10        case BMP280_REG_CTRL_MEAS:
  11        case BMP280_REG_RESET:
  12                return true;
  13        default:
  14                return false;
  15        };
  16}
  17
  18static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg)
  19{
  20        switch (reg) {
  21        case BMP180_REG_OUT_XLSB:
  22        case BMP180_REG_OUT_LSB:
  23        case BMP180_REG_OUT_MSB:
  24        case BMP280_REG_CTRL_MEAS:
  25                return true;
  26        default:
  27                return false;
  28        }
  29}
  30
  31const struct regmap_config bmp180_regmap_config = {
  32        .reg_bits = 8,
  33        .val_bits = 8,
  34
  35        .max_register = BMP180_REG_OUT_XLSB,
  36        .cache_type = REGCACHE_RBTREE,
  37
  38        .writeable_reg = bmp180_is_writeable_reg,
  39        .volatile_reg = bmp180_is_volatile_reg,
  40};
  41EXPORT_SYMBOL(bmp180_regmap_config);
  42
  43static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
  44{
  45        switch (reg) {
  46        case BMP280_REG_CONFIG:
  47        case BMP280_REG_CTRL_HUMIDITY:
  48        case BMP280_REG_CTRL_MEAS:
  49        case BMP280_REG_RESET:
  50                return true;
  51        default:
  52                return false;
  53        };
  54}
  55
  56static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
  57{
  58        switch (reg) {
  59        case BMP280_REG_HUMIDITY_LSB:
  60        case BMP280_REG_HUMIDITY_MSB:
  61        case BMP280_REG_TEMP_XLSB:
  62        case BMP280_REG_TEMP_LSB:
  63        case BMP280_REG_TEMP_MSB:
  64        case BMP280_REG_PRESS_XLSB:
  65        case BMP280_REG_PRESS_LSB:
  66        case BMP280_REG_PRESS_MSB:
  67        case BMP280_REG_STATUS:
  68                return true;
  69        default:
  70                return false;
  71        }
  72}
  73
  74const struct regmap_config bmp280_regmap_config = {
  75        .reg_bits = 8,
  76        .val_bits = 8,
  77
  78        .max_register = BMP280_REG_HUMIDITY_LSB,
  79        .cache_type = REGCACHE_RBTREE,
  80
  81        .writeable_reg = bmp280_is_writeable_reg,
  82        .volatile_reg = bmp280_is_volatile_reg,
  83};
  84EXPORT_SYMBOL(bmp280_regmap_config);
  85