tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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_NS(bmp180_regmap_config, IIO_BMP280);
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
75static bool bmp380_is_writeable_reg(struct device *dev, unsigned int reg)
76{
77 switch (reg) {
78 case BMP380_REG_CMD:
79 case BMP380_REG_CONFIG:
80 case BMP380_REG_FIFO_CONFIG_1:
81 case BMP380_REG_FIFO_CONFIG_2:
82 case BMP380_REG_FIFO_WATERMARK_LSB:
83 case BMP380_REG_FIFO_WATERMARK_MSB:
84 case BMP380_REG_POWER_CONTROL:
85 case BMP380_REG_INT_CONTROL:
86 case BMP380_REG_IF_CONFIG:
87 case BMP380_REG_ODR:
88 case BMP380_REG_OSR:
89 return true;
90 default:
91 return false;
92 }
93}
94
95static bool bmp380_is_volatile_reg(struct device *dev, unsigned int reg)
96{
97 switch (reg) {
98 case BMP380_REG_TEMP_XLSB:
99 case BMP380_REG_TEMP_LSB:
100 case BMP380_REG_TEMP_MSB:
101 case BMP380_REG_PRESS_XLSB:
102 case BMP380_REG_PRESS_LSB:
103 case BMP380_REG_PRESS_MSB:
104 case BMP380_REG_SENSOR_TIME_XLSB:
105 case BMP380_REG_SENSOR_TIME_LSB:
106 case BMP380_REG_SENSOR_TIME_MSB:
107 case BMP380_REG_INT_STATUS:
108 case BMP380_REG_FIFO_DATA:
109 case BMP380_REG_STATUS:
110 case BMP380_REG_ERROR:
111 case BMP380_REG_EVENT:
112 return true;
113 default:
114 return false;
115 }
116}
117
118const struct regmap_config bmp280_regmap_config = {
119 .reg_bits = 8,
120 .val_bits = 8,
121
122 .max_register = BMP280_REG_HUMIDITY_LSB,
123 .cache_type = REGCACHE_RBTREE,
124
125 .writeable_reg = bmp280_is_writeable_reg,
126 .volatile_reg = bmp280_is_volatile_reg,
127};
128EXPORT_SYMBOL_NS(bmp280_regmap_config, IIO_BMP280);
129
130const struct regmap_config bmp380_regmap_config = {
131 .reg_bits = 8,
132 .val_bits = 8,
133
134 .max_register = BMP380_REG_CMD,
135 .cache_type = REGCACHE_RBTREE,
136
137 .writeable_reg = bmp380_is_writeable_reg,
138 .volatile_reg = bmp380_is_volatile_reg,
139};
140EXPORT_SYMBOL_NS(bmp380_regmap_config, IIO_BMP280);