[Intel-gfx] [PATCH v2 00/17] drm/i915: Port A HPD and other HPD cleanups

[Ville Syrjälä]

On Thu, Aug 27, 2015 at 11:55:55PM +0300, ville.syrjala at linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Second posting of the HPD port A series, with some new added goodies
> at the end ;)
> 
> I tried to accomodate Paulo's review comments on v1 of the series [1]
> and noticed a few other warts myself that I tried to sort out. Additonally
> I added a bunch of BXT cleanups to the end, and an extra regression
> fix for gen2-4.
> 
> I've not had time to test this version yet. I'll try to do that soon,
> and especially give it a shakedown on a BXT.

Tested on BXT now. At laest port C HPD (HDMI on the board I have) works.

Not quite sure about the port A vs. B swapping. There seems to be a bit
of a mess around those parts with intel_hpd_pin_to_port() vs. irq_port[]
vs. hpd_pin. The way I see it we should not be messing with the
irq_port[] assignment and instead intel_hpd_pin_to_port() should do the
right thing with the swapped pins, but currently that's not how it is.
But since it's only BXT A-step that's affected, I'm not sure there's any
point in spending time to handle it more cleanly.

> 
> The entire series is available at
> git://github.com/vsyrjala/linux.git port_a_hotplug_7
> 
> [1] http://lists.freedesktop.org/archives/intel-gfx/2015-August/073559.html 
> 
> Ville Syrjälä (17):
>   drm/i915: Clean up various HPD defines
>   drm/i915: Extract intel_hpd_enabled_irqs()
>   drm/i915: Factor out ilk_update_display_irq()
>   drm/i915: Add HAS_PCH_LPT_LP() macro
>   drm/i915: Rename BXT PORTA HPD defines
>   drm/i915: Move {pin,long}_mask initialization to caller from
>     intel_get_hpd_pins()
>   drm/i915: Introduce spt_irq_handler()
>   drm/i915: Add port A HPD support for ILK/SNB
>   drm/i915: Add port A HPD support for IVB/HSW
>   drm/i915: LPT:LP needs port A HPD enabled in both north and south
>   drm/i915: Add port A HPD support for BDW
>   drm/i915: Add port A HPD support for SPT
>   drm/i915: Reinitialize HPD after runtime D3
>   drm/i915: Rewrite bxt_hpd_handler() to look like everyone else
>   drm/i915: Refactor the hpd irq handling functions
>   drm/i915: Rewrite BXT HPD code to conform to pre-existing style
>   drm/i915: Pass hpd_status_i915[] to intel_get_hpd_pins() in pre-g4x
> 
>  drivers/gpu/drm/i915/i915_drv.c      |   9 +
>  drivers/gpu/drm/i915/i915_drv.h      |   1 +
>  drivers/gpu/drm/i915/i915_irq.c      | 477 ++++++++++++++++++++++++-----------
>  drivers/gpu/drm/i915/i915_reg.h      |  99 ++++----
>  drivers/gpu/drm/i915/intel_display.c |  13 +-
>  drivers/gpu/drm/i915/intel_pm.c      |   4 +-
>  6 files changed, 390 insertions(+), 213 deletions(-)
> 
> -- 
> 2.4.6

-- 
Ville Syrjälä
Intel OTC