Merge branch 'for-next/misc'

mfd: rave-sp: Add parameters to query IP address/netmask ...

Unlike LCD type information, IP address as well as netmaks are not
stored in an easily usable format in RAVE SP EEPROM. In order to obtain
them we need to issue a special command to RAVE SP. For that purpose add
device "sp" and expose that data as a device parameters (sp.ipaddr and
sp.netmask, correspondingly)

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: rave-sp: Make use of wait_on_timeout() ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: rave-sp: Emulate CMD_GET_STATUS on device that don't support it ...

CMD_GET_STATUS is not supported by some devices implementing
RDU2-compatible ICD as well as "legacy" devices. To account for that
fact, add code that obtains the same information (app/bootloader FW
version) using several different commands.

This is a backport of Linux kernel patch [1]

[1] https://lore.kernel.org/lkml/20180707024108.32373-5-andrew.smirnov@gmail.com/T/#md1b7130a992235d57cabadc8e59fc74ee3b21d9e

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: rave-sp: Add legacy watchdog ping command translation ...

This is needed to make rave-sp-wdt driver to properly ping the
watchdog on "legacy" firmware.

This is a backport of Linux kernel patch [1]

[1] https://lore.kernel.org/lkml/20180707024108.32373-5-andrew.smirnov@gmail.com/T/#m767615239f8aa681a2dc0ccfe1c877e4cbb0edf6

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: rave-sp: Add mapping for legacy EEPROM command ...

This is needed to make rave-sp-eeprom driver work on "legacy"
firmware.

This is a backport of Linux kernel patch [1]

[1] https://lore.kernel.org/lkml/20180707024108.32373-5-andrew.smirnov@gmail.com/T/#mae2272763ae092b5b11ab128f5c22039d55557cb

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: rave-sp: Fix incorrectly specified checksum type ...

RAVE SP firmware covered by "legacy" variant uses 16-bit CCITT
checksum algorithm. Change the code to correctly reflect that.

This is a backport of Linux kernel patch [1]

[1] https://lore.kernel.org/lkml/20180707024108.32373-5-andrew.smirnov@gmail.com/T/#m6251b0a4869dd303c21910fc99f2ce127cf8aae0

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: rave-sp: Remove unused defines ...

Remove unusded defines that are a leftover from earlier iterations of
the driver.

This is a backport of Linux kernel patch [1]

[1] https://lore.kernel.org/lkml/20180707024108.32373-5-andrew.smirnov@gmail.com/T/#m02a75392c729828f822e2cd52f86e541b1649a27

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: Port RAVE SP driver from Linux kernel ...

Port MFD driver for RAVE SP from Linux kernel.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>