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