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hwmon: (sht15) add support for CRC validation

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The sht15 sensor allows validating exchanges to and from the device
using a crc8 function. An utility function to reverse a byte has also
been added.

Signed-off-by: Jerome Oufella <jerome.oufella@savoirfairelinux.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
This commit is contained in:
Jerome Oufella
2011-04-12 15:34:39 -04:00
committed by Guenter Roeck
parent cc15c7ebb4
commit 82c7465b4d
3 changed files with 183 additions and 20 deletions
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2
include/linux/sht15.h
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@@ -19,6 +19,7 @@
* @gpio_sck: no. of gpio to which the data clock is connected.
* @supply_mv: supply voltage in mv. Overridden by regulator if
* available.
* @checksum: flag to indicate the checksum should be validated.
* @no_otp_reload: flag to indicate no reload from OTP.
* @low_resolution: flag to indicate the temp/humidity resolution to use.
*/
@@ -26,6 +27,7 @@ struct sht15_platform_data {
int gpio_data;
int gpio_sck;
int supply_mv;
bool checksum;
bool no_otp_reload;
bool low_resolution;
};