Merge branch 'for-next/i2c'

Merge branch 'for-next/fb'

Merge branch 'for-next/console'

Merge branch 'for-next/arm'

Release v2015.12.0 ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers: bus: Match against id_table first ...

Matching against driver's name before looking throught its id_table
can lead to a somewhat strange and unintuitive behaviour where a
device whose driver's name matches one of the lines in id_table (which
is not unheard of in Linux kernel) will be probed against said driver
with 'id_table' field set to NULL which in turn will result in
dev_get_drvdata erroring out with -ENODEV.

This patch changes the behaviour such that device_match() only tries
to match against driver's name only if id_table of that driver is not
present.

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

ARM: pxa: pxa2xx use PSPR for resume address ...

Both lubbock and mainstone suspend to RAM were broken by the same
typo. The linux kernel saves the resume address to PSPR, ie. the scratch
pad register, while it was PSSR which was checked in barebox.

Fixing this typo was tested on mainstone where resume from S3 works.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: smc1111: fix ethernet mac setting ...

Even if the setting of the MAC address does work correctly, the function
return an error.

In the former barebox version, this didn't seem to be a problem. In
v2015.11.0 version, the "ifup eth0" command fails because of this, and
as a consequence the network interface doesn't work.

The fix is straightforward.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: Remove do_execute and thumb2_execute ...

In commit 104a6a7 support was added
for Thumb2.  It added do_execute() as a way to provide arch dependent
calling veneers for use in "go" and thumb2_execute() as the thumb2 to
arm veneer.

But thumb2_execute() isn't necessary as gcc generates a proper calling
sequence from a standard function pointer call.  Thumb2 barebox is
compiled with the AAPCS ABI which requires this.

It also had a bug and didn't pass the arguments properly, but code
execute via "go" rarely uses arguments so this wasn't very noticeable.

Since thumb2 was always the only user of do_execute(), go ahead and
delete that too.

Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: Remove kernel booting call for thumb2 mode ...

The asm code to do the actual call into the kernel (or another
barebox) when compiled in thumb2 mode isn't necessary.  gcc generates
a perfectly good calling sequence from a normal function pointer call.
If it didn't, the code in bootstrap_boot() that uses a function
pointer to jump to the 2nd stage barebox from an xloader wouldn't
work.

It appears to be allowed that the call to kernel() could return, as
neither start_linux() nor kernel() are marked noreturn, and there is
code after calls to start_linux().

The asm code has a bug in this case, as it uses bx and not blx, and
thus doesn't set the link register.  Since it's a tail call, this
would be okay, but only if the LR value from the start of
start_linux() (and the callee-saved registers) are restored
beforehand, which isn't done.  The gcc generated call sequence will do
this.

Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Revert "memtest: move error handling to end of function" ...

While this simplifies the code as is I got the request to continue on
errors in memtest, which can be better implemented when the messages are
printed inline and not at the end of the function.

This reverts commit 4ff9e28.

eeprom: Support pagesize OF device tree property ...

Allows specifying the page size when the eeproms are in the device
tree.  Same as the Linux kernel device-tree bindings for at24.

Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

eeprom: Add support for 24c1025 EEPROM ...

This is the Microchip version of the Atmel 24c1024, which is already
supported.  The key difference between them is that the I2C address
bit used to select between the two banks is bit 2 for the 1025 and not
bit 0 as in the 1024.

Add a flag to describe this difference.

Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: core: initialize *retlen in mtd_write() ...

Some mtd drivers like the spi-nor driver do not assign a value
to the retlen pointer but instead only add the bytes written
to *retlen. Users of mtd_write expect the variable to be initialized
by the mtd core though, so we have to do it in mtd_write(). The
same is done in mtd_read already.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: pwm-backlight: Honour discrete brightness levels from dt ...

If probed from device tree we have an array of pwm duty cycle levels
in the brightness-levels property. Although the driver parsed the property,
the values have been ignored. Make use of these flags so that the driver
can work for example with inverted PWMs.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

font: fbconsole: add custom font supports ...

Signed-off-by: Du Huanpeng <u74147@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i2c: core: Add client I2C address to devinfo ...

Useful bit of information.  Example:
barebox:/ devinfo dummy0
Bus: i2c
  Address: 0x52

Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: eth: Remove ethaddr_param ...

commit d00db554 introduce ethaddr_param. But it is not initialized, so
devinfo fails to show the mac. Remove it and use edev->ethaddr.

Signed-off-by: Jan Remmet <j.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i2c: add pca954x bus multiplexer driver ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i2c: import multiplexed I2C bus core support from linux kernel ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i2c_probe: Make command easier to work with ...

Instead of insisting on multiple parameters just use sane defaults.
This allows us to scan all addresses on all busses which is normally
what one wants to get an overview over devices on i2c busses.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i2c: Create for_each_i2c_adapter() ...

This can be used by the i2c_probe command to iterate over i2c adapters.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

i2c-imx: Use xzalloc instead of kzalloc ...

Driver's private data structure is allocated with kzalloc without any
code to check for kzalloc's possible failure. Fix that by replaceing
kzalloc with xzalloc.

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

i2c: Add support for DesignWare controllers ...

Add a driver for DesignWare I2C controller IP block found on several
SoCs including Altera SoC products

Tested using Terrasic SoCKit board and GPIO expander board with I2C
EEPROM on it

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

loads: Use putchar rather than console_putc ...

'putchar' is a standard function to output a character. Use this one
instead of the lower level console_putc.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

loadb: Allow to specify device to use ...

The port we want to have the console on may not necessarily be the port
we want to transfer files on. Make the port configurable with a
commandline option.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

console: Set baudrate during registration ...

This makes sure that the cdev->baudrate field is always consistent with
the hardware state.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

loadb: deactivate console before using it for loadb ...

Remove the console device we are about using for loadb from the
console layer by deactivating it. This makes sure that no printf output
disturbs the current file transfer.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

loadb: Use local cdev ...

We already retrieve a console_device using console_get_first_active().
Use this one also to send/receive characters instead of the combined
input/output of all console devices with putc/getc.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

imx6-mmdc: Fix MAPSR usage ...

The commit ea1fb2f by Eric Nelson
imx6-mmdc: fix automatic power down enable in write level calibration

fixed the incorrect usage of the MAPSR register, but there is one more
place where the MAPSR is misused in the exact same way, so fix that as
well.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>