Detect the connector status by polling the DDC. Update the status at runtime. Clean up a the driver's DDC code in the process. Patches 1 and 2 fix long-standing problems in the DDC code. Patches 3 to 9 refactor the DDC code. The code then keeps its data structures internal, acquires locks automatically and it much more readable overall. With patches 10 and 11, mgag200 makes use of existing helpers for reading and probing the DDC. It then correctly updates the status and EDID at runtime. Tested on various Matrox hardware. Thomas Zimmermann (11): drm/mgag200: Set DDC timeout in milliseconds drm/mgag200: Bind I2C lifetime to DRM device drm/mgag200: Store pointer to struct mga_device in struct mga_i2c_chan drm/mgag200: Allocate instance of struct mga_i2c_chan dynamically drm/mgag200: Inline mgag200_i2c_init() drm/mgag200: Replace struct mga_i2c_chan with struct mgag200_ddc drm/mgag200: Rename mgag200_i2c.c to mgag200_ddc.c drm/mgag200: Rename struct i2c_algo_bit_data callbacks drm/mgag200: Acquire I/O-register lock in DDC code drm/mgag200: Use drm_connector_helper_get_modes() drm/mgag200: Set .detect_ctx() and enable connector polling drivers/gpu/drm/mgag200/Makefile | 2 +- drivers/gpu/drm/mgag200/mgag200_ddc.c | 179 ++++++++++++++++++++++ drivers/gpu/drm/mgag200/mgag200_ddc.h | 11 ++ drivers/gpu/drm/mgag200/mgag200_drv.h | 19 +-- drivers/gpu/drm/mgag200/mgag200_g200.c | 15 +- drivers/gpu/drm/mgag200/mgag200_g200eh.c | 15 +- drivers/gpu/drm/mgag200/mgag200_g200eh3.c | 15 +- drivers/gpu/drm/mgag200/mgag200_g200er.c | 15 +- drivers/gpu/drm/mgag200/mgag200_g200ev.c | 15 +- drivers/gpu/drm/mgag200/mgag200_g200ew3.c | 15 +- drivers/gpu/drm/mgag200/mgag200_g200se.c | 15 +- drivers/gpu/drm/mgag200/mgag200_g200wb.c | 15 +- drivers/gpu/drm/mgag200/mgag200_i2c.c | 129 ---------------- drivers/gpu/drm/mgag200/mgag200_mode.c | 27 +--- 14 files changed, 274 insertions(+), 213 deletions(-) create mode 100644 drivers/gpu/drm/mgag200/mgag200_ddc.c create mode 100644 drivers/gpu/drm/mgag200/mgag200_ddc.h delete mode 100644 drivers/gpu/drm/mgag200/mgag200_i2c.c -- 2.44.0
