1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #include <linux/device.h>
3*4882a593Smuzhiyun #include <linux/module.h>
4*4882a593Smuzhiyun #include <linux/regmap.h>
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include "bmp280.h"
7*4882a593Smuzhiyun
bmp180_is_writeable_reg(struct device * dev,unsigned int reg)8*4882a593Smuzhiyun static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg)
9*4882a593Smuzhiyun {
10*4882a593Smuzhiyun switch (reg) {
11*4882a593Smuzhiyun case BMP280_REG_CTRL_MEAS:
12*4882a593Smuzhiyun case BMP280_REG_RESET:
13*4882a593Smuzhiyun return true;
14*4882a593Smuzhiyun default:
15*4882a593Smuzhiyun return false;
16*4882a593Smuzhiyun };
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
bmp180_is_volatile_reg(struct device * dev,unsigned int reg)19*4882a593Smuzhiyun static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun switch (reg) {
22*4882a593Smuzhiyun case BMP180_REG_OUT_XLSB:
23*4882a593Smuzhiyun case BMP180_REG_OUT_LSB:
24*4882a593Smuzhiyun case BMP180_REG_OUT_MSB:
25*4882a593Smuzhiyun case BMP280_REG_CTRL_MEAS:
26*4882a593Smuzhiyun return true;
27*4882a593Smuzhiyun default:
28*4882a593Smuzhiyun return false;
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun const struct regmap_config bmp180_regmap_config = {
33*4882a593Smuzhiyun .reg_bits = 8,
34*4882a593Smuzhiyun .val_bits = 8,
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun .max_register = BMP180_REG_OUT_XLSB,
37*4882a593Smuzhiyun .cache_type = REGCACHE_RBTREE,
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun .writeable_reg = bmp180_is_writeable_reg,
40*4882a593Smuzhiyun .volatile_reg = bmp180_is_volatile_reg,
41*4882a593Smuzhiyun };
42*4882a593Smuzhiyun EXPORT_SYMBOL(bmp180_regmap_config);
43*4882a593Smuzhiyun
bmp280_is_writeable_reg(struct device * dev,unsigned int reg)44*4882a593Smuzhiyun static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun switch (reg) {
47*4882a593Smuzhiyun case BMP280_REG_CONFIG:
48*4882a593Smuzhiyun case BMP280_REG_CTRL_HUMIDITY:
49*4882a593Smuzhiyun case BMP280_REG_CTRL_MEAS:
50*4882a593Smuzhiyun case BMP280_REG_RESET:
51*4882a593Smuzhiyun return true;
52*4882a593Smuzhiyun default:
53*4882a593Smuzhiyun return false;
54*4882a593Smuzhiyun };
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun
bmp280_is_volatile_reg(struct device * dev,unsigned int reg)57*4882a593Smuzhiyun static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun switch (reg) {
60*4882a593Smuzhiyun case BMP280_REG_HUMIDITY_LSB:
61*4882a593Smuzhiyun case BMP280_REG_HUMIDITY_MSB:
62*4882a593Smuzhiyun case BMP280_REG_TEMP_XLSB:
63*4882a593Smuzhiyun case BMP280_REG_TEMP_LSB:
64*4882a593Smuzhiyun case BMP280_REG_TEMP_MSB:
65*4882a593Smuzhiyun case BMP280_REG_PRESS_XLSB:
66*4882a593Smuzhiyun case BMP280_REG_PRESS_LSB:
67*4882a593Smuzhiyun case BMP280_REG_PRESS_MSB:
68*4882a593Smuzhiyun case BMP280_REG_STATUS:
69*4882a593Smuzhiyun return true;
70*4882a593Smuzhiyun default:
71*4882a593Smuzhiyun return false;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun const struct regmap_config bmp280_regmap_config = {
76*4882a593Smuzhiyun .reg_bits = 8,
77*4882a593Smuzhiyun .val_bits = 8,
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun .max_register = BMP280_REG_HUMIDITY_LSB,
80*4882a593Smuzhiyun .cache_type = REGCACHE_RBTREE,
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun .writeable_reg = bmp280_is_writeable_reg,
83*4882a593Smuzhiyun .volatile_reg = bmp280_is_volatile_reg,
84*4882a593Smuzhiyun };
85*4882a593Smuzhiyun EXPORT_SYMBOL(bmp280_regmap_config);
86