Here are a number of updates for ast's ASTDP transmitter code. So far the ast driver required the DisplayPort to be connected at boot. Later detection was not supported. Re-connecting the cable was also not supported. Once atomic_disable powered off the physical ASTDP connector, there was no way of detecting a conencted display. Patch 1 makes Hot Plug Detection work. If ncesessary, the connector's detect helper powers up the physical connector to read the HPD status.
That's a good oportunity to clean up ast's whole detection code for ASTDP transmitters. So patch 2 to 4 remove duplicated status tests throughout the ASTDP code. Patch 5 simplified the code for reading the display's EDID data from the firmware. Tested on AST2600 hardware with an ASTDP transmitter. Thomas Zimmermann (5): drm/ast: astdp: Wake up during connector status detection drm/ast: astdp: Test firmware status once during probing drm/ast: astdp: Only test HDP state in ast_astdp_is_connected() drm/ast: astdp: Perform link training during atomic_enable drm/ast: astdp: Clean up EDID reading drivers/gpu/drm/ast/ast_dp.c | 186 +++++++++++++++------------------ drivers/gpu/drm/ast/ast_drv.h | 4 +- drivers/gpu/drm/ast/ast_main.c | 6 +- drivers/gpu/drm/ast/ast_mode.c | 31 +++++- drivers/gpu/drm/ast/ast_post.c | 2 +- drivers/gpu/drm/ast/ast_reg.h | 22 ++-- 6 files changed, 126 insertions(+), 125 deletions(-) -- 2.45.2
