[PATCHv5 0/3] Add initial support for slimport anx78xx

[Enric Balletbo i Serra]

Hi all,

This is the fifth version of patch set. Any comments are welcome.

See the changelog below for details.

The following series add initial support for the Slimport ANX7814 transmitter, a
ultra-low power Full-HD (1080p60) transmitter designed for portable device.

The driver was originally created and based from the work of Junhua Xia from
Analogix. This driver is a refactor of the original driver and fixes different
coding style lines, and different errors/warnings reported by checkpatch. Also
there were things that I noticed that we need to change like:

 - Convert the numbered GPIO API to the new descriptor based GPIO API.
 - Review the DT binding
 - Add missing MODULE_DEVICE_TABLE(of, ...);
 - Fix Makefiles and Kconfig to build conditionally.
 - Use SIMPLE_DEV_PM_OPS() instead of the deprecated i2c .suspend and
  .resume callbacks.
 - Move to use managed device resources.
 - Remove dead/unused code.
 - And others ...

Changes since v4:
Rob Herring and Laurent Pinchart:
 - Add ports binding for describing data connections.
Nicolas Boichat:
 - He did a big effort refactoring the driver and in order to simplify the different
   state machines involved and the code in general.
Enric Balletbo:
 - Remove some magic numbers.
 - Use some DRM helpers.
 - Document better the driver in general

Changes since v3:

Nicolas Boichat: 
 - Integrate sp_edid_header_result with sp_check_edid_data
 - Fix loop forever.
 - Use meaningful messages and variable names
 - Replace some 'while' loops and use a for loop.
 - Might be clearer to say >= LINK_6P75G
 - Convert a function to void function because always return 0
 - Remove some magic numbers and refactor sp_tx_pclk_calc
 - Replace sp_read_reg(SP_TX_LINK_BW_SET_REG) for sp_tx_get_link_bw.
 - Mask bits 4:0. Bit 5 has another purpose, and 7:6 are reserved.
 - Use ARRAY_SIZE.
 - Use memset for initialization.
 - Simply condition if (!(c1 & POLLING_EN) || (c & POLLING_ERR))
 - Don not use a temporal variable write the value directly.
 - Fix various typos
 - Return directly PTR_ERR.

Dan Carpenter: 
 - Refactor while loop removing the earlier condition and do while (--c) instead
 - Simplify double negative and fix alignment
 - Remove the superflous casts to u16 and parens
 - Remove debug printks and use ftrace instead.
 - Flip this condition around and pull the code in one indent level.
 - Fix return value 'ret' that should be an int. It causes a signedness bug later.
 - Use better style for devm_kzalloc
 - Get rid of AUX_*.  They aren't used much and we could easily use normal error codes instead.

Enric Balletbo
 - Fix errors reported by scripts/checkpatch.pl --strict --subjective
 - Remove XTAL_CLK_M10 XTAL_CLK definitions
 - replace ulong for unsigned long
 - remove some magic numbers and refactor sp_tx_enable_audio_output
 - remove some magic numbers and refactor sp_tx_phy_auto_test

Changes since v2 (requested by Daniel Kurtz):
 - clean up the typos, and little nits requested by Dan.
 - move to the drm/bridge directory
 - rename the files, variables, types, etc. to anx78xx
 - plumb through the context struct to all functions that act on the device
 - use proper messaging (dev_ rather than pr_, _dbg/_err rather than _info)

Changes since v1:
 - As requested by Greg, move from staging to a subsystem.

Best regards,

Enric Balletbo i Serra (3):
  of: Add vendor prefix for Analogix Semiconductor, Inc.
  devicetree: Add new ANX7814 SlimPort transmitter binding.
  drm: bridge: anx78xx: Add anx78xx driver support by analogix.

 .../devicetree/bindings/vendor-prefixes.txt        |    1 +
 .../devicetree/bindings/video/bridge/anx7814.txt   |   36 +
 drivers/gpu/drm/bridge/Kconfig                     |    2 +
 drivers/gpu/drm/bridge/Makefile                    |    1 +
 drivers/gpu/drm/bridge/anx78xx/Kconfig             |    5 +
 drivers/gpu/drm/bridge/anx78xx/Makefile            |    4 +
 drivers/gpu/drm/bridge/anx78xx/anx78xx.h           |   45 +
 drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c      |  347 +++
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c   | 3226 ++++++++++++++++++++
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h   |  149 +
 drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h   |  754 +++++
 11 files changed, 4570 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/video/bridge/anx7814.txt
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/Kconfig
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/Makefile
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/anx78xx.h
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/anx78xx_main.c
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.c
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_drv.h
 create mode 100644 drivers/gpu/drm/bridge/anx78xx/slimport_tx_reg.h

-- 
2.1.0