1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/bitops.h>
3 #include <linux/device.h>
4 #include <linux/regmap.h>
6 /* BMP380 specific registers */
7 #define BMP380_REG_CMD 0x7E
8 #define BMP380_REG_CONFIG 0x1F
9 #define BMP380_REG_ODR 0x1D
10 #define BMP380_REG_OSR 0x1C
11 #define BMP380_REG_POWER_CONTROL 0x1B
12 #define BMP380_REG_IF_CONFIG 0x1A
13 #define BMP380_REG_INT_CONTROL 0x19
14 #define BMP380_REG_INT_STATUS 0x11
15 #define BMP380_REG_EVENT 0x10
16 #define BMP380_REG_STATUS 0x03
17 #define BMP380_REG_ERROR 0x02
18 #define BMP380_REG_ID 0x00
20 #define BMP380_REG_FIFO_CONFIG_1 0x18
21 #define BMP380_REG_FIFO_CONFIG_2 0x17
22 #define BMP380_REG_FIFO_WATERMARK_MSB 0x16
23 #define BMP380_REG_FIFO_WATERMARK_LSB 0x15
24 #define BMP380_REG_FIFO_DATA 0x14
25 #define BMP380_REG_FIFO_LENGTH_MSB 0x13
26 #define BMP380_REG_FIFO_LENGTH_LSB 0x12
28 #define BMP380_REG_SENSOR_TIME_MSB 0x0E
29 #define BMP380_REG_SENSOR_TIME_LSB 0x0D
30 #define BMP380_REG_SENSOR_TIME_XLSB 0x0C
32 #define BMP380_REG_TEMP_MSB 0x09
33 #define BMP380_REG_TEMP_LSB 0x08
34 #define BMP380_REG_TEMP_XLSB 0x07
36 #define BMP380_REG_PRESS_MSB 0x06
37 #define BMP380_REG_PRESS_LSB 0x05
38 #define BMP380_REG_PRESS_XLSB 0x04
40 #define BMP380_REG_CALIB_TEMP_START 0x31
41 #define BMP380_CALIB_REG_COUNT 21
43 #define BMP380_FILTER_MASK GENMASK(3, 1)
44 #define BMP380_FILTER_OFF 0
45 #define BMP380_FILTER_1X 1
46 #define BMP380_FILTER_3X 2
47 #define BMP380_FILTER_7X 3
48 #define BMP380_FILTER_15X 4
49 #define BMP380_FILTER_31X 5
50 #define BMP380_FILTER_63X 6
51 #define BMP380_FILTER_127X 7
53 #define BMP380_OSRS_TEMP_MASK GENMASK(5, 3)
54 #define BMP380_OSRS_PRESS_MASK GENMASK(2, 0)
56 #define BMP380_ODRS_MASK GENMASK(4, 0)
58 #define BMP380_CTRL_SENSORS_MASK GENMASK(1, 0)
59 #define BMP380_CTRL_SENSORS_PRESS_EN BIT(0)
60 #define BMP380_CTRL_SENSORS_TEMP_EN BIT(1)
61 #define BMP380_MODE_MASK GENMASK(5, 4)
62 #define BMP380_MODE_SLEEP 0
63 #define BMP380_MODE_FORCED 1
64 #define BMP380_MODE_NORMAL 3
66 #define BMP380_MIN_TEMP -4000
67 #define BMP380_MAX_TEMP 8500
68 #define BMP380_MIN_PRES 3000000
69 #define BMP380_MAX_PRES 12500000
71 #define BMP380_CMD_NOOP 0x00
72 #define BMP380_CMD_EXTMODE_EN_MID 0x34
73 #define BMP380_CMD_FIFO_FLUSH 0xB0
74 #define BMP380_CMD_SOFT_RESET 0xB6
76 #define BMP380_STATUS_CMD_RDY_MASK BIT(4)
77 #define BMP380_STATUS_DRDY_PRESS_MASK BIT(5)
78 #define BMP380_STATUS_DRDY_TEMP_MASK BIT(6)
80 #define BMP380_ERR_FATAL_MASK BIT(0)
81 #define BMP380_ERR_CMD_MASK BIT(1)
82 #define BMP380_ERR_CONF_MASK BIT(2)
84 #define BMP380_TEMP_SKIPPED 0x800000
85 #define BMP380_PRESS_SKIPPED 0x800000
87 /* BMP280 specific registers */
88 #define BMP280_REG_HUMIDITY_LSB 0xFE
89 #define BMP280_REG_HUMIDITY_MSB 0xFD
90 #define BMP280_REG_TEMP_XLSB 0xFC
91 #define BMP280_REG_TEMP_LSB 0xFB
92 #define BMP280_REG_TEMP_MSB 0xFA
93 #define BMP280_REG_PRESS_XLSB 0xF9
94 #define BMP280_REG_PRESS_LSB 0xF8
95 #define BMP280_REG_PRESS_MSB 0xF7
97 /* Helper mask to truncate excess 4 bits on pressure and temp readings */
98 #define BMP280_MEAS_TRIM_MASK GENMASK(24, 4)
100 #define BMP280_REG_CONFIG 0xF5
101 #define BMP280_REG_CTRL_MEAS 0xF4
102 #define BMP280_REG_STATUS 0xF3
103 #define BMP280_REG_CTRL_HUMIDITY 0xF2
105 /* Due to non linear mapping, and data sizes we can't do a bulk read */
106 #define BMP280_REG_COMP_H1 0xA1
107 #define BMP280_REG_COMP_H2 0xE1
108 #define BMP280_REG_COMP_H3 0xE3
109 #define BMP280_REG_COMP_H4 0xE4
110 #define BMP280_REG_COMP_H5 0xE5
111 #define BMP280_REG_COMP_H6 0xE7
113 #define BMP280_REG_COMP_TEMP_START 0x88
114 #define BMP280_COMP_TEMP_REG_COUNT 6
116 #define BMP280_REG_COMP_PRESS_START 0x8E
117 #define BMP280_COMP_PRESS_REG_COUNT 18
119 #define BMP280_COMP_H5_MASK GENMASK(15, 4)
121 #define BMP280_CONTIGUOUS_CALIB_REGS (BMP280_COMP_TEMP_REG_COUNT + \
122 BMP280_COMP_PRESS_REG_COUNT)
124 #define BMP280_FILTER_MASK GENMASK(4, 2)
125 #define BMP280_FILTER_OFF 0
126 #define BMP280_FILTER_2X 1
127 #define BMP280_FILTER_4X 2
128 #define BMP280_FILTER_8X 3
129 #define BMP280_FILTER_16X 4
131 #define BMP280_OSRS_HUMIDITY_MASK GENMASK(2, 0)
132 #define BMP280_OSRS_HUMIDITY_SKIP 0
133 #define BMP280_OSRS_HUMIDITY_1X 1
134 #define BMP280_OSRS_HUMIDITY_2X 2
135 #define BMP280_OSRS_HUMIDITY_4X 3
136 #define BMP280_OSRS_HUMIDITY_8X 4
137 #define BMP280_OSRS_HUMIDITY_16X 5
139 #define BMP280_OSRS_TEMP_MASK GENMASK(7, 5)
140 #define BMP280_OSRS_TEMP_SKIP 0
141 #define BMP280_OSRS_TEMP_1X 1
142 #define BMP280_OSRS_TEMP_2X 2
143 #define BMP280_OSRS_TEMP_4X 3
144 #define BMP280_OSRS_TEMP_8X 4
145 #define BMP280_OSRS_TEMP_16X 5
147 #define BMP280_OSRS_PRESS_MASK GENMASK(4, 2)
148 #define BMP280_OSRS_PRESS_SKIP 0
149 #define BMP280_OSRS_PRESS_1X 1
150 #define BMP280_OSRS_PRESS_2X 2
151 #define BMP280_OSRS_PRESS_4X 3
152 #define BMP280_OSRS_PRESS_8X 4
153 #define BMP280_OSRS_PRESS_16X 5
155 #define BMP280_MODE_MASK GENMASK(1, 0)
156 #define BMP280_MODE_SLEEP 0
157 #define BMP280_MODE_FORCED 1
158 #define BMP280_MODE_NORMAL 3
160 /* BMP180 specific registers */
161 #define BMP180_REG_OUT_XLSB 0xF8
162 #define BMP180_REG_OUT_LSB 0xF7
163 #define BMP180_REG_OUT_MSB 0xF6
165 #define BMP180_REG_CALIB_START 0xAA
166 #define BMP180_REG_CALIB_COUNT 22
168 #define BMP180_MEAS_CTRL_MASK GENMASK(4, 0)
169 #define BMP180_MEAS_TEMP 0x0E
170 #define BMP180_MEAS_PRESS 0x14
171 #define BMP180_MEAS_SCO BIT(5)
172 #define BMP180_OSRS_PRESS_MASK GENMASK(7, 6)
173 #define BMP180_MEAS_PRESS_1X 0
174 #define BMP180_MEAS_PRESS_2X 1
175 #define BMP180_MEAS_PRESS_4X 2
176 #define BMP180_MEAS_PRESS_8X 3
178 /* BMP180 and BMP280 common registers */
179 #define BMP280_REG_CTRL_MEAS 0xF4
180 #define BMP280_REG_RESET 0xE0
181 #define BMP280_REG_ID 0xD0
183 #define BMP380_CHIP_ID 0x50
184 #define BMP180_CHIP_ID 0x55
185 #define BMP280_CHIP_ID 0x58
186 #define BME280_CHIP_ID 0x60
187 #define BMP280_SOFT_RESET_VAL 0xB6
189 /* BMP280 register skipped special values */
190 #define BMP280_TEMP_SKIPPED 0x80000
191 #define BMP280_PRESS_SKIPPED 0x80000
192 #define BMP280_HUMIDITY_SKIPPED 0x8000
194 /* Regmap configurations */
195 extern const struct regmap_config bmp180_regmap_config;
196 extern const struct regmap_config bmp280_regmap_config;
197 extern const struct regmap_config bmp380_regmap_config;
199 /* Probe called from different transports */
200 int bmp280_common_probe(struct device *dev,
201 struct regmap *regmap,
207 extern const struct dev_pm_ops bmp280_dev_pm_ops;