diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-02-19 22:31:57 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-04-29 21:51:16 +0200 |
| commit | 1e833f40eb38b033ea185687daa72c073f1acc15 (patch) | |
| tree | 0fffd268962fd7f1ff52082eee76823381d31f42 | |
| parent | 1857e1daa0695d45b2639ac9e3cfcdaede4a7f8a (diff) | |
drm/i915: don't count cpu ports for fdi B/C lane sharing
This allows us to use all 4 fdi lanes on fdi B when the cpu eDP is
running on pipe C. Yay!
v2: Encapsulate test into a little helper function, as suggested by
Chris Wilson.
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 1d157978f10..1ef44b2a695 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2369,6 +2369,11 @@ static void intel_fdi_normal_train(struct drm_crtc *crtc) FDI_FE_ERRC_ENABLE); } +static bool pipe_has_enabled_pch(struct intel_crtc *intel_crtc) +{ + return intel_crtc->base.enabled && intel_crtc->config.has_pch_encoder; +} + static void ivb_modeset_global_resources(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -2378,10 +2383,13 @@ static void ivb_modeset_global_resources(struct drm_device *dev) to_intel_crtc(dev_priv->pipe_to_crtc_mapping[PIPE_C]); uint32_t temp; - /* When everything is off disable fdi C so that we could enable fdi B - * with all lanes. XXX: This misses the case where a pipe is not using - * any pch resources and so doesn't need any fdi lanes. */ - if (!pipe_B_crtc->base.enabled && !pipe_C_crtc->base.enabled) { + /* + * When everything is off disable fdi C so that we could enable fdi B + * with all lanes. Note that we don't care about enabled pipes without + * an enabled pch encoder. + */ + if (!pipe_has_enabled_pch(pipe_B_crtc) && + !pipe_has_enabled_pch(pipe_C_crtc)) { WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE); WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE); @@ -4015,7 +4023,7 @@ static bool ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe, } return true; case PIPE_C: - if (!pipe_B_crtc->base.enabled || + if (!pipe_has_enabled_pch(pipe_B_crtc) || pipe_B_crtc->config.fdi_lanes <= 2) { if (pipe_config->fdi_lanes > 2) { DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n", |