Merge remote-tracking branch 'remotes/dagrh/tags/pull-virtiofs-20211026' into staging
[qemu.git] / include / hw / sensor / tmp105.h
1 /*
2 * Texas Instruments TMP105 Temperature Sensor
3 *
4 * Browse the data sheet:
5 *
6 * http://www.ti.com/lit/gpn/tmp105
7 *
8 * Copyright (C) 2012 Alex Horn <alex.horn@cs.ox.ac.uk>
9 * Copyright (C) 2008-2012 Andrzej Zaborowski <balrogg@gmail.com>
10 *
11 * This work is licensed under the terms of the GNU GPL, version 2 or
12 * later. See the COPYING file in the top-level directory.
13 */
14 #ifndef QEMU_TMP105_H
15 #define QEMU_TMP105_H
16
17 #include "hw/i2c/i2c.h"
18 #include "hw/sensor/tmp105_regs.h"
19 #include "qom/object.h"
20
21 #define TYPE_TMP105 "tmp105"
22 OBJECT_DECLARE_SIMPLE_TYPE(TMP105State, TMP105)
23
24 /**
25 * TMP105State:
26 * @config: Bits 5 and 6 (value 32 and 64) determine the precision of the
27 * temperature. See Table 8 in the data sheet.
28 *
29 * @see_also: http://www.ti.com/lit/gpn/tmp105
30 */
31 struct TMP105State {
32 /*< private >*/
33 I2CSlave i2c;
34 /*< public >*/
35
36 uint8_t len;
37 uint8_t buf[2];
38 qemu_irq pin;
39
40 uint8_t pointer;
41 uint8_t config;
42 int16_t temperature;
43 int16_t limit[2];
44 int faults;
45 uint8_t alarm;
46 /*
47 * The TMP105 initially looks for a temperature rising above T_high;
48 * once this is detected, the condition it looks for next is the
49 * temperature falling below T_low. This flag is false when initially
50 * looking for T_high, true when looking for T_low.
51 */
52 bool detect_falling;
53 };
54
55 #endif