Merge branch 'tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox into drm-next

Updates from Jean-Fracois for the TDA998x driver, which are on top of
the fixes you have previously pulled, except these changes aren't
intended for -rc, but the next merge window.

Several of these are issues of correctness - passing more correct HDMI
info packets, not reading registers in older chips documented as write
only (despite appearing to be read/write in later chips).  Others are
code cleanups (using definitions rather than constants where we have
them already in the kernel).

Additional functionality is also added by way of optional support for
the IRQ from the TDA998x, which allows us to avoid busy-waiting for
the EDID reads.

* 'tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox:
  drm/i2c: tda998x: always use the same device for all kernel messages
  drm/i2c: tda998x: adjust the audio clock divider for S/PDIF
  drm/i2c: tda998x: code optimization
  drm/i2c: tda998x: remove the unused variable ca_i2s
  drm/i2c: tda998x: make the audio code more readable
  drm/i2c: tda998x: use irq for connection status and EDID read
  drm/i2c: tda998x: always enable EDID read IRQ
  drm/i2c: tda998x: add DT documentation
  drm/i2c: tda998x: add DT support
  drm/i2c: tda998x: don't read write-only registers
  drm/i2c: tda998x: don't freeze the system at audio startup time
  drm/i2c: tda998x: change probe message origin
  drm/i2c: tda998x: code cleanup
  drm/i2c: tda998x: clean up error chip version checking
  drm/i2c: tda998x: check more I/O errors
  drm/i2c: tda998x: simplify the i2c read/write functions
  drm/i2c: tda998x: use ALSA IEC958 definitions and update audio frequency
  drm/i2c: tda998x: add the active aspect in HDMI AVI frame
  drm/i2c: tda998x: use HDMI constants

Documentation/devicetree/bindings/drm/i2c/tda998x.txt

+Device-Tree bindings for the NXP TDA998x HDMI transmitter
+
+Required properties;
+  - compatible: must be "nxp,tda998x"
+
+Optional properties:
+  - interrupts: interrupt number and trigger type
+	default: polling
+
+  - pinctrl-0: pin control group to be used for
+	screen plug/unplug interrupt.
+
+  - pinctrl-names: must contain a "default" entry.
+
+  - video-ports: 24 bits value which defines how the video controller
+	output is wired to the TDA998x input - default: <0x230145>
+
+Example:
+
+	tda998x: hdmi-encoder {
+		compatible = "nxp,tda998x";
+		reg = <0x70>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <27 2>;		/* falling edge */
+		pinctrl-0 = <&pmx_camera>;
+		pinctrl-names = "default";
+	};