This patchset adds support for enabling/disabling dynamic power-wells on VLV on-demand. Before enabling on-demand power well toggling the patchset adds the checks for required power domains for places that poke at the HW. These are the pipe, encoder and connector HW state readout functions. It also does a get/put of required power domains in the connector detect and get_mode handlers. Also a set of new port specific power domains are added so the above encoder and connector specific check/get/put parts can refer to them. One TODO item left is hot-plug detection on BYT. With the display power well off HPD stops working and this patchset doesn't add any workaround for that, as that wasn't deemed to be important. A solution to make it work again would be to use connector polling for VGA and GPIO re-muxing for DP,HDMI. Another TODO is more power optimizations for DP 2 lane configurations and configurations where only a single DP port is enabled. Since atm, the PHY setup code assumes a two port/4 lanes config, we enable all power domains that this requires. Atm, the only win is when all ports are off, or in case of a single VGA connection, where we can power off the DPIO TX lane power wells. Tested on BYT DP/HDMI/VGA with xset dpms force off/on and suspend / resume. Also did some basic testing on HSW,IVB with DP. I ransome of the igt gem tests on BYT with all display power wells off, they seemed to run ok. Imre Deak (19): drm/i915: use drm_i915_private everywhere in the power domain api drm/i915: fold in __intel_power_well_get/put functions drm/i915: move modeset_update_power_wells earlier drm/i915: move power domain macros to intel_pm.c drm/i915: power domains: add power well ops drm/i915: remove power_well->always_on flag drm/i915: add port power domains drm/i915: get port power domain in connector detect drm/i915: check port power domain when reading the encoder hw state drm/i915: check pipe power domain when reading its hw state drm/i915: vlv: keep first level vblank IRQs masked drm/i915: sanitize PUNIT register macro definitions drm/i915: factor out reset_vblank_counter drm/i915: switch order of power domain init wrt. irq install drm/i915: use power domain api to check vga power state drm/i915: sanity check power well sw state against hw state drm/i915: vlv: factor out valleyview_display_irq_install drm/i915: move hsw power domain comment to its right place drm/i915: power domains: add vlv power wells drivers/gpu/drm/i915/i915_debugfs.c | 22 ++ drivers/gpu/drm/i915/i915_dma.c | 16 +- drivers/gpu/drm/i915/i915_drv.c | 4 +- drivers/gpu/drm/i915/i915_drv.h | 65 ++++-- drivers/gpu/drm/i915/i915_irq.c | 126 +++++++--- drivers/gpu/drm/i915/i915_reg.h | 29 ++- drivers/gpu/drm/i915/intel_crt.c | 42 +++- drivers/gpu/drm/i915/intel_ddi.c | 2 +- drivers/gpu/drm/i915/intel_display.c | 255 +++++++++++++-------- drivers/gpu/drm/i915/intel_dp.c | 16 +- drivers/gpu/drm/i915/intel_drv.h | 20 +- drivers/gpu/drm/i915/intel_dsi.c | 13 +- drivers/gpu/drm/i915/intel_pm.c | 433 +++++++++++++++++++++++++++++------ drivers/gpu/drm/i915/intel_uncore.c | 4 +- 14 files changed, 797 insertions(+), 250 deletions(-) -- 1.8.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
