1 /* SPDX-License-Identifier: GPL-2.0 */
2 #include <linux/bitops.h>
3 #include <linux/device.h>
4 #include <linux/regmap.h>
5 
6 /* BMP280 specific registers */
7 #define BMP280_REG_HUMIDITY_LSB		0xFE
8 #define BMP280_REG_HUMIDITY_MSB		0xFD
9 #define BMP280_REG_TEMP_XLSB		0xFC
10 #define BMP280_REG_TEMP_LSB		0xFB
11 #define BMP280_REG_TEMP_MSB		0xFA
12 #define BMP280_REG_PRESS_XLSB		0xF9
13 #define BMP280_REG_PRESS_LSB		0xF8
14 #define BMP280_REG_PRESS_MSB		0xF7
15 
16 #define BMP280_REG_CONFIG		0xF5
17 #define BMP280_REG_CTRL_MEAS		0xF4
18 #define BMP280_REG_STATUS		0xF3
19 #define BMP280_REG_CTRL_HUMIDITY	0xF2
20 
21 /* Due to non linear mapping, and data sizes we can't do a bulk read */
22 #define BMP280_REG_COMP_H1		0xA1
23 #define BMP280_REG_COMP_H2		0xE1
24 #define BMP280_REG_COMP_H3		0xE3
25 #define BMP280_REG_COMP_H4		0xE4
26 #define BMP280_REG_COMP_H5		0xE5
27 #define BMP280_REG_COMP_H6		0xE7
28 
29 #define BMP280_REG_COMP_TEMP_START	0x88
30 #define BMP280_COMP_TEMP_REG_COUNT	6
31 
32 #define BMP280_REG_COMP_PRESS_START	0x8E
33 #define BMP280_COMP_PRESS_REG_COUNT	18
34 
35 #define BMP280_FILTER_MASK		(BIT(4) | BIT(3) | BIT(2))
36 #define BMP280_FILTER_OFF		0
37 #define BMP280_FILTER_2X		BIT(2)
38 #define BMP280_FILTER_4X		BIT(3)
39 #define BMP280_FILTER_8X		(BIT(3) | BIT(2))
40 #define BMP280_FILTER_16X		BIT(4)
41 
42 #define BMP280_OSRS_HUMIDITY_MASK	(BIT(2) | BIT(1) | BIT(0))
43 #define BMP280_OSRS_HUMIDITIY_X(osrs_h)	((osrs_h) << 0)
44 #define BMP280_OSRS_HUMIDITY_SKIP	0
45 #define BMP280_OSRS_HUMIDITY_1X		BMP280_OSRS_HUMIDITIY_X(1)
46 #define BMP280_OSRS_HUMIDITY_2X		BMP280_OSRS_HUMIDITIY_X(2)
47 #define BMP280_OSRS_HUMIDITY_4X		BMP280_OSRS_HUMIDITIY_X(3)
48 #define BMP280_OSRS_HUMIDITY_8X		BMP280_OSRS_HUMIDITIY_X(4)
49 #define BMP280_OSRS_HUMIDITY_16X	BMP280_OSRS_HUMIDITIY_X(5)
50 
51 #define BMP280_OSRS_TEMP_MASK		(BIT(7) | BIT(6) | BIT(5))
52 #define BMP280_OSRS_TEMP_SKIP		0
53 #define BMP280_OSRS_TEMP_X(osrs_t)	((osrs_t) << 5)
54 #define BMP280_OSRS_TEMP_1X		BMP280_OSRS_TEMP_X(1)
55 #define BMP280_OSRS_TEMP_2X		BMP280_OSRS_TEMP_X(2)
56 #define BMP280_OSRS_TEMP_4X		BMP280_OSRS_TEMP_X(3)
57 #define BMP280_OSRS_TEMP_8X		BMP280_OSRS_TEMP_X(4)
58 #define BMP280_OSRS_TEMP_16X		BMP280_OSRS_TEMP_X(5)
59 
60 #define BMP280_OSRS_PRESS_MASK		(BIT(4) | BIT(3) | BIT(2))
61 #define BMP280_OSRS_PRESS_SKIP		0
62 #define BMP280_OSRS_PRESS_X(osrs_p)	((osrs_p) << 2)
63 #define BMP280_OSRS_PRESS_1X		BMP280_OSRS_PRESS_X(1)
64 #define BMP280_OSRS_PRESS_2X		BMP280_OSRS_PRESS_X(2)
65 #define BMP280_OSRS_PRESS_4X		BMP280_OSRS_PRESS_X(3)
66 #define BMP280_OSRS_PRESS_8X		BMP280_OSRS_PRESS_X(4)
67 #define BMP280_OSRS_PRESS_16X		BMP280_OSRS_PRESS_X(5)
68 
69 #define BMP280_MODE_MASK		(BIT(1) | BIT(0))
70 #define BMP280_MODE_SLEEP		0
71 #define BMP280_MODE_FORCED		BIT(0)
72 #define BMP280_MODE_NORMAL		(BIT(1) | BIT(0))
73 
74 /* BMP180 specific registers */
75 #define BMP180_REG_OUT_XLSB		0xF8
76 #define BMP180_REG_OUT_LSB		0xF7
77 #define BMP180_REG_OUT_MSB		0xF6
78 
79 #define BMP180_REG_CALIB_START		0xAA
80 #define BMP180_REG_CALIB_COUNT		22
81 
82 #define BMP180_MEAS_SCO			BIT(5)
83 #define BMP180_MEAS_TEMP		(0x0E | BMP180_MEAS_SCO)
84 #define BMP180_MEAS_PRESS_X(oss)	((oss) << 6 | 0x14 | BMP180_MEAS_SCO)
85 #define BMP180_MEAS_PRESS_1X		BMP180_MEAS_PRESS_X(0)
86 #define BMP180_MEAS_PRESS_2X		BMP180_MEAS_PRESS_X(1)
87 #define BMP180_MEAS_PRESS_4X		BMP180_MEAS_PRESS_X(2)
88 #define BMP180_MEAS_PRESS_8X		BMP180_MEAS_PRESS_X(3)
89 
90 /* BMP180 and BMP280 common registers */
91 #define BMP280_REG_CTRL_MEAS		0xF4
92 #define BMP280_REG_RESET		0xE0
93 #define BMP280_REG_ID			0xD0
94 
95 #define BMP180_CHIP_ID			0x55
96 #define BMP280_CHIP_ID			0x58
97 #define BME280_CHIP_ID			0x60
98 #define BMP280_SOFT_RESET_VAL		0xB6
99 
100 /* BMP280 register skipped special values */
101 #define BMP280_TEMP_SKIPPED		0x80000
102 #define BMP280_PRESS_SKIPPED		0x80000
103 #define BMP280_HUMIDITY_SKIPPED		0x8000
104 
105 /* Regmap configurations */
106 extern const struct regmap_config bmp180_regmap_config;
107 extern const struct regmap_config bmp280_regmap_config;
108 
109 /* Probe called from different transports */
110 int bmp280_common_probe(struct device *dev,
111 			struct regmap *regmap,
112 			unsigned int chip,
113 			const char *name,
114 			int irq);
115 
116 /* PM ops */
117 extern const struct dev_pm_ops bmp280_dev_pm_ops;
118