Update spidev.c - #2

The I2C core really likes to act up, so fall back to GPIO I2C bitbanging for now.

of_property_read_bool

Search for a property in a device node.
Returns true if the property exist false otherwise.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>

To achieve DT support, we need to populate a custom platform_data in a
private struct from DT information. To simplify code, the adapter and
algorithm are also put into the private struct.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>

And adjust all callers.

The new device parameter is used in the next patch to initialize the
mux's of_node so that its children may be automatically populated.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>

For 'normal' i2c bus drivers, we can call of_i2c_register_devices()
and have the device tree framework automatically populate the bus with
the devices specified in the device tree.

This patch adds a common code to the i2c mux framework to have the mux
sub-busses be populated by the of_i2c_register_devices() too.  If the
mux device has an of_node, we populate the sub-bus' of_node so that
the subsequent call to of_i2c_register_devices() will find the
corresponding devices.

It seemed better to put this logic in i2c_add_mux_adapter() rather
than the individual mux drivers, as they will all probably want to do
the same thing.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Always use 32bit access to avoid endianess issues.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Not all I2C controllers support reading 256 byte blocks, so split the reading
into multiple smaller blocks.

Similar to the existing helper function to lookup a I2C device by node.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Although the dma controller expects the exact number of frames it was
configured for we can allow transfers with less than that number of frames, if
the total number of frames is a multiple of it. This is done by repeating the
frames until the total number of frames has been reached.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Add a small helper function for generating a new cookie.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

This is a hack!

The code should obviously check the EDID feature field for EDID feature flags
and not the color_formats field of the drm_display_info struct. Also update the
color_formats field with new modes instead of overwriting the current mode.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

The CEA extension block has a field which describes which YCbCr modes are
supported by the device, use it to fill the drm_display_info color_formats
fields. Also the existence of a CEA extension block is used as indication
that the device supports RGB.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

This patch adds a driver for the Analog Devices adv7511. The adv7511 is a
standalone HDMI transmitter chip. It features a HDMI output interface on one end
and video and audio input interfaces on the other.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Enable DRM debugging by default for now.

This patch adds a set of functions which are intended to be used when
implementing a dmaengine based sound PCM driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

The code currently passes the register offset in the current block to
regcache_lookup_reg. This works fine as long as there is only one block and with
base register of 0, but in all other cases it will look-up the default for a
wrong register, which can cause unnecessary register writes. This patch fixes
it by passing the actual register number to regcache_lookup_reg.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <stable@vger.kernel.org>