We found freescale imx6 and rockchip rk3288 and Ingenic JZ4780 (Xburst/MIPS) use the interface compatible Designware HDMI IP, but they also have some lightly difference, 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: patch (1): split out imx-soc code from imx-hdmi to dw_hdmi-imx.c patch (2): move imx-hdmi to bridge/, and rename to dw-hdmi to patch (3): add multi byte register access support make this driver indepent of drm-imx . And we will add rockchip platform specific code dw_hdmi-rockchip.c later, this is depend on drm-rockchip.
Changes in V3: - refactor multi byte register access, and split it to one indepent patch - convert it to a drm_bridge driver
Changes in V2: - use git format-patch -M to generate these patch - remove change-id - remove from
Andy Yan (3): imx-drm: imx-hdmi: split imx soc specific code from imx-hdmi dw-hdmi: move imx-hdmi to bridge/dw-hdmi dw-hdmi: add support for multi byte register width access
ykk (1): dw-hdmi: convert dw-hdmi to drm_bridge mode
drivers/gpu/drm/bridge/Kconfig | 5 + drivers/gpu/drm/bridge/Makefile | 1 + .../imx-hdmi.c => gpu/drm/bridge/dw_hdmi.c} | 619 +++++++++------------ .../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 | 263 +++++++++ include/drm/bridge/dw_hdmi.h | 52 ++ 8 files changed, 575 insertions(+), 373 deletions(-) rename drivers/{staging/imx-drm/imx-hdmi.c => gpu/drm/bridge/dw_hdmi.c} (75%) 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