diff options
| author | Alex Horn <alex.horn@cs.ox.ac.uk> | 2012-12-05 12:34:06 +0000 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-12-23 14:37:51 -0600 |
| commit | 2915efbfa8efadaa2806e827ba92b8dba4f7cd52 (patch) | |
| tree | c3887980d6b85ae57fb749ac3e0b74492c6cd7ed /hw/tmp105.h | |
| parent | eac236ea7bfc1902126be70459e320591078df5c (diff) | |
tmp105: Create API for TMP105 temperature sensor.
* Define enum for TMP105 registers
* Move tmp105_set() from I2C to TMP105 header
* Document units and range of temperature as preconditions
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alex Horn <alex.horn@cs.ox.ac.uk>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/tmp105.h')
| -rw-r--r-- | hw/tmp105.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/hw/tmp105.h b/hw/tmp105.h new file mode 100644 index 0000000000..51eff4be1c --- /dev/null +++ b/hw/tmp105.h @@ -0,0 +1,67 @@ +/* + * Texas Instruments TMP105 Temperature Sensor + * + * Browse the data sheet: + * + * http://www.ti.com/lit/gpn/tmp105 + * + * Copyright (C) 2012 Alex Horn <alex.horn@cs.ox.ac.uk> + * Copyright (C) 2008-2012 Andrzej Zaborowski <balrogg@gmail.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * later. See the COPYING file in the top-level directory. + */ +#ifndef QEMU_TMP105_H +#define QEMU_TMP105_H + +#include "i2c.h" + +/** + * TMP105Reg: + * @TMP105_REG_TEMPERATURE: Temperature register + * @TMP105_REG_CONFIG: Configuration register + * @TMP105_REG_T_LOW: Low temperature register (also known as T_hyst) + * @TMP105_REG_T_HIGH: High temperature register (also known as T_OS) + * + * The following temperature sensors are + * compatible with the TMP105 registers: + * - adt75 + * - ds1775 + * - ds75 + * - lm75 + * - lm75a + * - max6625 + * - max6626 + * - mcp980x + * - stds75 + * - tcn75 + * - tmp100 + * - tmp101 + * - tmp105 + * - tmp175 + * - tmp275 + * - tmp75 + **/ +typedef enum TMP105Reg { + TMP105_REG_TEMPERATURE = 0, + TMP105_REG_CONFIG, + TMP105_REG_T_LOW, + TMP105_REG_T_HIGH, +} TMP105Reg; + +/** + * tmp105_set: + * @i2c: dispatcher to TMP105 hardware model + * @temp: temperature with 0.001 centigrades units in the range -40 C to +125 C + * + * Sets the temperature of the TMP105 hardware model. + * + * Bits 5 and 6 (value 32 and 64) in the register indexed by TMP105_REG_CONFIG + * determine the precision of the temperature. See Table 8 in the data sheet. + * + * @see_also: I2C_SLAVE macro + * @see_also: http://www.ti.com/lit/gpn/tmp105 + */ +void tmp105_set(I2CSlave *i2c, int temp); + +#endif |