On Thu, 26 Apr 2012 15:21:04 -0300 Eugeni Dodonov <[email protected]> wrote:
> On Haswell, the recommended PCH-connected output is the one driven by DDI > E in FDI mode, used for VGA connection. All the others are handled by the > CPU. > > Note that this does not accounts for Haswell/PPT combination yet. > > Signed-off-by: Eugeni Dodonov <[email protected]> > --- > drivers/gpu/drm/i915/intel_display.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/drivers/gpu/drm/i915/intel_display.c > b/drivers/gpu/drm/i915/intel_display.c > index 758173d..ea1ac15 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -2631,6 +2631,18 @@ static bool intel_crtc_driving_pch(struct drm_crtc > *crtc) > if (encoder->base.crtc != crtc) > continue; > > + /* On Haswell, LPT PCH handles the VGA connection via FDI, and > Haswell > + * CPU handles all others */ > + if (IS_HASWELL(dev)) { > + if (HAS_PCH_LPT(dev) && (encoder->type == > DRM_MODE_ENCODER_DAC)) > + return true; > + else { > + DRM_DEBUG_KMS("Haswell detected encoder %d, > assuming is CPU\n", > + encoder->type); > + return false; > + } > + } > + > switch (encoder->type) { > case INTEL_OUTPUT_EDP: > if (!intel_encoder_is_pch_edp(&encoder->base)) Do HSW/PPT combinations exist? If so, we should probably note that with an error or something loud so that people won't think it should work... -- Jesse Barnes, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
