We found freescale imx5 and rockchip rk3288 and Ingenic JZ4780 (Xburst/MIPS) use the interface compatible Designware HDMI IP, but they also have some lightly differences, such as phy pll configuration, register width(imx hdmi register is one byte, but rk3288 is 4 bytes width and can only access by word), 4K support(imx6 doesn't support 4k, but rk3288 does).
To reuse the imx-hdmi driver, we do this patch set: (1): fix some CodingStyle warning to make checkpatch happy (2): split out imx-soc code from imx-hdmi to dw_hdmi-imx.c (3): move imx-hdmi to bridge/dw-hdmi, and convert it to a drm_bridge driver And we will add rockchip platform specific code dw_hdmi-rockchip.c later, which is depend on drm-rockchip.
Changes in v7: - remove unused variables from structure dw_hdmi - remove a wrong modification - add copyrights for dw_hdmi-imx.c
Changes in v6: - rearrange the patch order - move some modification to patch#6 - refactor register access without reg_shift - move some modification from patch#5
Changes in v5: - refactor reg-io-width
Changes in v4: - fix checkpatch CHECK - defer probe ddc i2c adapter
Changes in v3: - split multi register access to one indepent patch
Changes in v2: - use git format -M to generate these patch
Andy Yan (6): staging: imx-drm: imx-hdmi: make checkpatch happy staging: imx-drm: imx-hdmi: return defer if can't get ddc i2c adapter staging: imx-drm: imx-hdmi: split imx soc specific code from imx-hdmi staging: imx-drm: imx-hdmi: move imx-hdmi to bridge/dw-hdmi drm: bridge/dw-hdmi: add support for multi byte register width access dt-bindings: add document for dw-hdmi
Yakir Yang (1): drm: bridge/dw-hdmi: convert dw-hdmi to drm_bridge mode
.../devicetree/bindings/drm/bridge/dw-hdmi.txt | 38 ++ drivers/gpu/drm/bridge/Kconfig | 5 + drivers/gpu/drm/bridge/Makefile | 1 + .../imx-hdmi.c => gpu/drm/bridge/dw_hdmi.c} | 723 +++++++++------------ .../imx-hdmi.h => gpu/drm/bridge/dw_hdmi.h} | 5 +- drivers/staging/imx-drm/Kconfig | 1 + drivers/staging/imx-drm/Makefile | 2 +- drivers/staging/imx-drm/dw_hdmi-imx.c | 266 ++++++++ include/drm/bridge/dw_hdmi.h | 52 ++ 9 files changed, 670 insertions(+), 423 deletions(-) create mode 100644 Documentation/devicetree/bindings/drm/bridge/dw-hdmi.txt rename drivers/{staging/imx-drm/imx-hdmi.c => gpu/drm/bridge/dw_hdmi.c} (71%) rename drivers/{staging/imx-drm/imx-hdmi.h => gpu/drm/bridge/dw_hdmi.h} (99%) create mode 100644 drivers/staging/imx-drm/dw_hdmi-imx.c create mode 100644 include/drm/bridge/dw_hdmi.h