Without this Linux driver reports that the currently set fan speed is 0.

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

According to PMBUS v1.3.1 part II specification the used prefix 0xff for extended
commands is reserved for future use:
"The PMBUS_COMMAND_EXT is reserved for future use to extend the PMBus command set
beyond the available 256 command codes."

As an alternative the standard points the MFR_SPECIFIC_COMMAND_EXT to be available
with 0xFE as the first byte of a command.
The same standard also points that standard commands from 0xc4 can be defined
by a manufacturer. To be compliant with the standard and to simplify the design
I have decided to move all used extended command to the standard range.
Be aware that this brings some non-backward compatible changes.

Changes include:
- main FW
- bootloader
- test_master
- documentation

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

These coefficients has to be fixed, there are just values to export values other than 0

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

To be called at the read of FAN_COMMAND_n. For some reason it fixes
random restarts after the write of FAN_COMMAND_n.

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

STATUS_BYTE is read only, STATUS_CML is R/W, can be cleared on write
with selected bits

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

also:
- merge cmd_data_lengths and ext_cmd_data_lengths
- sort commands (main_fw)
- align columns in cmds_cmds arrays

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

The size of a string is passed as a first byte

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

i2cdump tires to dump the data at the address 0xff. By Monimod
it was recognized as an incomplete extended command. The Monimod
coulnd't recover. Finally, after the timeout the watchdog was
triggering the reset.

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

This reverts commit 9e119357.

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

This gets around the setjmp thumb2 issue during compilation.

They were