The ti-sn65dsi86 bridge on the Lenovo Miix 630 does not appear to be wired to an I2C bus - there is no indication from the FW which bus to use and scanning all of the busses does not result in an unknown device being discovered. As a result, we must utilize the ability of the ti-sn65dsi86 to be configured "inband" via the DSI connection. Since the driver already utilizes regmap (over I2C), adding the ability of the driver to configure via DSI is rather minimal effort once we have established a regmap over DSI handle. However, regmap currently doesn't support the MIPI DSI bus, so add that option first. Jeffrey Hugo (2): regmap: Add DSI bus support drm/bridge: ti-sn65dsi86: Add support to be a DSI device drivers/base/regmap/Kconfig | 6 +- drivers/base/regmap/Makefile | 1 + drivers/base/regmap/regmap-dsi.c | 62 ++++++++++ drivers/gpu/drm/bridge/Kconfig | 1 + drivers/gpu/drm/bridge/ti-sn65dsi86.c | 160 +++++++++++++++++++------- include/linux/regmap.h | 37 ++++++ 6 files changed, 222 insertions(+), 45 deletions(-) create mode 100644 drivers/base/regmap/regmap-dsi.c -- 2.17.1
