1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/bitops.h>
3 #include <linux/device.h>
4 #include <linux/regmap.h>
5 
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
19 
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
27 
28 #define BMP380_REG_SENSOR_TIME_MSB	0x0E
29 #define BMP380_REG_SENSOR_TIME_LSB	0x0D
30 #define BMP380_REG_SENSOR_TIME_XLSB	0x0C
31 
32 #define BMP380_REG_TEMP_MSB		0x09
33 #define BMP380_REG_TEMP_LSB		0x08
34 #define BMP380_REG_TEMP_XLSB		0x07
35 
36 #define BMP380_REG_PRESS_MSB		0x06
37 #define BMP380_REG_PRESS_LSB		0x05
38 #define BMP380_REG_PRESS_XLSB		0x04
39 
40 #define BMP380_REG_CALIB_TEMP_START	0x31
41 #define BMP380_CALIB_REG_COUNT		21
42 
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
52 
53 #define BMP380_OSRS_TEMP_MASK		GENMASK(5, 3)
54 #define BMP380_OSRS_PRESS_MASK		GENMASK(2, 0)
55 
56 #define BMP380_ODRS_MASK		GENMASK(4, 0)
57 
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
65 
66 #define BMP380_MIN_TEMP			-4000
67 #define BMP380_MAX_TEMP			8500
68 #define BMP380_MIN_PRES			3000000
69 #define BMP380_MAX_PRES			12500000
70 
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
75 
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)
79 
80 #define BMP380_ERR_FATAL_MASK		BIT(0)
81 #define BMP380_ERR_CMD_MASK		BIT(1)
82 #define BMP380_ERR_CONF_MASK		BIT(2)
83 
84 #define BMP380_TEMP_SKIPPED		0x800000
85 #define BMP380_PRESS_SKIPPED		0x800000
86 
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
96 
97 /* Helper mask to truncate excess 4 bits on pressure and temp readings */
98 #define BMP280_MEAS_TRIM_MASK		GENMASK(24, 4)
99 
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
104 
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
112 
113 #define BMP280_REG_COMP_TEMP_START	0x88
114 #define BMP280_COMP_TEMP_REG_COUNT	6
115 
116 #define BMP280_REG_COMP_PRESS_START	0x8E
117 #define BMP280_COMP_PRESS_REG_COUNT	18
118 
119 #define BMP280_COMP_H5_MASK		GENMASK(15, 4)
120 
121 #define BMP280_CONTIGUOUS_CALIB_REGS	(BMP280_COMP_TEMP_REG_COUNT + \
122 					 BMP280_COMP_PRESS_REG_COUNT)
123 
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
130 
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
138 
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
146 
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
154 
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
159 
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
164 
165 #define BMP180_REG_CALIB_START		0xAA
166 #define BMP180_REG_CALIB_COUNT		22
167 
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
177 
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
182 
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
188 
189 /* BMP280 register skipped special values */
190 #define BMP280_TEMP_SKIPPED		0x80000
191 #define BMP280_PRESS_SKIPPED		0x80000
192 #define BMP280_HUMIDITY_SKIPPED		0x8000
193 
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;
198 
199 /* Probe called from different transports */
200 int bmp280_common_probe(struct device *dev,
201 			struct regmap *regmap,
202 			unsigned int chip,
203 			const char *name,
204 			int irq);
205 
206 /* PM ops */
207 extern const struct dev_pm_ops bmp280_dev_pm_ops;
208