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Stuart
On Mon, May 20, 2013 at 11:15 AM, Stuart Abercrombie <
sabercrom...@chromium.org> wrote:
> 90% of core speed (=180MHz dot clock) is too high for 2048x1280 to get
> pixel doubling on Pineview, which it needs to avoid underruns, so
> l
at 170MHz.
Stuart
On Wed, May 29, 2013 at 8:22 AM, Daniel Vetter wrote:
> On Tue, May 28, 2013 at 10:39:07AM -0700, Stuart Abercrombie wrote:
> > Any comments?
> >
> > Without this, plugging one of the older Chromebook models into a Dell
> U3011
> > monitor p
Both of these were taking the mode_config mutex but executed from the
same work queue. If intel_crtc_page_flip happened to flush a work queue
containing an HPD event handler work item, deadlock resulted, since the
mutex required by the HPD handler was taken before the flush. Instead
use a separat
90% of core speed (=180MHz dot clock) is too high for 2048x1280 to get
pixel doubling on Pineview, which it needs to avoid underruns, so
lower this to 85%.
Signed-off-by: Stuart Abercrombie
---
drivers/gpu/drm/i915/intel_display.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff
Following a hotplug interrupt the driver uses a successful EDID read to
indicate HDMI sink presence.
This leads to missing HDMI cable unplug events because the DDC lines can remain
up, allowing an EDID read to complete, well after the HPD line goes down during
unplugging
Since it is only the d
> Nope, the real fix is to simply check the status of the hpd line before
> trying the edid read. We already have that for g4x class chips, check
> g4x_hdmi_connected. We'd need to add similar checks for all other
> platforms.
> -Daniel
That would be preferable. Unfortunately we did not find a wa
> In the hotplug register, like on g4x. But that moved to to PCH_IIR on pch
> platforms. I plan to rework the entire hotplug handling for 3.8, hence why
> I haven't bothered to wire this up yet.
You are saying that the HPD line state is available in the register
called SDEIIR in the code? The doc
> My docs here say that the SDE_ISR reg contains what we want - high
> level irq bit when the hpd line is enabled. I admit, I haven't tested
> this ...
I'm looking at 2.1.1 in this
http://intellinuxgraphics.org/documentation/SNB/IHD_OS_Vol3_Part3.pdf.
All it has relating to hotplug in SDEIIR are
> I've tried to be slightly lazy than in my previous mail and quickly
> tested this on my snb here: Bit 23 in SDEISR (0xc4000) is set when the
> cable is plugged in, and cleared when nothing is plugged in. Afaict it
> works as advertised. Note tha the SDE irq definitions nicely
> differentiates bet
