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Diffstat (limited to 'include/linux/sensor/lps331ap.h')
| -rw-r--r-- | include/linux/sensor/lps331ap.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/include/linux/sensor/lps331ap.h b/include/linux/sensor/lps331ap.h new file mode 100644 index 0000000..6ecae61 --- /dev/null +++ b/include/linux/sensor/lps331ap.h @@ -0,0 +1,84 @@ +/* +* linux/sensor/lps331ap.h +* +* STMicroelectronics LPS331AP Pressure / Temperature Sensor module driver +* +* Copyright (C) 2010 STMicroelectronics- MSH - Motion Mems BU - Application Team +* Matteo Dameno (matteo.dameno@st.com) +* Carmine Iascone (carmine.iascone@st.com) +* +* Both authors are willing to be considered the contact and update points for +* the driver. +* +* This program is free software; you can redistribute it and/or +* modify it under the terms of the GNU General Public License +* version 2 as published by the Free Software Foundation. +* +* This program is distributed in the hope that it will be useful, but +* WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +* General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with this program; if not, write to the Free Software +* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA +* 02110-1301 USA +* +*/ +/****************************************************************************** + Revision 1.0.0 2011/Feb/14: + first release + moved to input/misc + Revision 1.0.1 2011/Apr/04: + xxx + Revision 1.0.2 2011/Sep/15: + corrects ord bug, forces BDU enable + Revision 1.0.3 2011/Sep/15: + introduces compansation params reading and sysfs file to get them + Revision 1.0.4 2011/Dec/12: + sets maximum allowable resolution modes dynamically with ODR; + Revision 1.0.5 2012/Feb/29: + introduces more compansation params and extends sysfs file content + format to get them; reduces minimum polling period define; + Revision 1.0.6 2012/Mar/30: + introduces one more compansation param and extends sysfs file content + format to get it. +******************************************************************************/ + +#ifndef __LPS331AP_H__ +#define __LPS331AP_H__ + +#define LPS331AP_PRS_MIN_POLL_PERIOD_MS 40 + +#define SAD0L 0x00 +#define SAD0H 0x01 +#define LPS331AP_PRS_I2C_SADROOT 0x2E +#define LPS331AP_PRS_I2C_SAD_L ((LPS331AP_PRS_I2C_SADROOT<<1)|SAD0L) +#define LPS331AP_PRS_I2C_SAD_H ((LPS331AP_PRS_I2C_SADROOT<<1)|SAD0H) +#define LPS331AP_PRS_DEV_NAME "lps331ap" + +/* Barometer and Termometer output data rate ODR */ +#define LPS331AP_PRS_ODR_ONESH 0x00 /* one shot both */ +#define LPS331AP_PRS_ODR_1_1 0x10 /* 1 Hz baro, 1 Hz term ODR */ +#define LPS331AP_PRS_ODR_7_7 0x50 /* 7 Hz baro, 7 Hz term ODR */ +#define LPS331AP_PRS_ODR_12_12 0x60 /* 12.5Hz baro, 12.5Hz term ODR */ +#define LPS331AP_PRS_ODR_25_25 0x70 /* 25 Hz baro, 25 Hz term ODR */ + +/* Pressure section defines */ +/* Pressure Sensor Operating Mode */ +#define LPS331AP_PRS_ENABLE 0x01 +#define LPS331AP_PRS_DISABLE 0x00 + +/* Output conversion factors */ +#define SENSITIVITY_T 480 /* = 480 LSB/degrC */ +#define SENSITIVITY_P 4096 /* = LSB/mbar */ +#define SENSITIVITY_P_SHIFT 12 /* = 4096 LSB/mbar */ +#define TEMPERATURE_OFFSET 42.5f /* = 42.5 degrC */ + +#ifdef __KERNEL__ +struct lps331ap_platform_data { + int irq; +}; +#endif /* __KERNEL__ */ + +#endif /* __LPS331AP_H__ */ |