The following patches aim to make a user able to calibrate the current measurement of the DS2438. This chip uses a offset register in page1, which is added to the current register to give the user the current measurement. If this value is wrong, the user will get an offset current value, even if the current is zero, for instance. This patch gives support for reading the page1 registers (including the offset register) and for writing to the offset register. The DS2438 datasheet shows a calibration routine, and with this patch, the user can do this quickly by writing the correct value to the offset register. This patch was tested on real hardware using a power supply and an electronic load. Please help to review this series of patches. Best regards! Sampaio --- Changes in v7: - Build test again Changes in v6: - Actually changing from BIN_ATTR to BIN_ATTR_RW --- Changes in v5: - Merged all brackets coding style issue in one patch - Changing from BIN_ATTR to BIN_ATTR_RW in w1_ds2438.c - Wrapping email lines - Addind Documentation/ABI/ Changes in v4: - Fixing different patches with identical subject lines as requested Changes in v3: - I accidentally added a wrong line that would not compile. I'm sorry. Fixed it. Changes in v2: - Using git send-email to send the patches - Adding documentation as requested - Separating the coding style changes in different patches as requested Luiz Sampaio (6): w1: ds2438: fixed a coding style issue w1: ds2438: fixed if brackets coding style issue w1: ds2438: changed sysfs macro for rw file w1: ds2438: fixing bug that would always get page0 w1: ds2438: adding support for reading page1 w1: ds2438: support for writing to offset register .../ABI/stable/sysfs-driver-w1_ds2438 | 13 ++ Documentation/w1/slaves/w1_ds2438.rst | 19 ++- drivers/w1/slaves/w1_ds2438.c | 122 +++++++++++++++--- 3 files changed, 137 insertions(+), 17 deletions(-) create mode 100644 Documentation/ABI/stable/sysfs-driver-w1_ds2438 -- 2.30.1
