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
8static 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
19static 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
32const 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};
42EXPORT_SYMBOL(bmp180_regmap_config);
43
44static 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
57static 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
75const 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};
85EXPORT_SYMBOL(bmp280_regmap_config);
86