On Thu, Dec 10, 2015 at 02:28:32PM +0100, Daniel Vetter wrote: > On Tue, Dec 08, 2015 at 07:59:42PM +0200, ville.syrjala@xxxxxxxxxxxxxxx wrote: > > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > > > The DDI translation tables are supposed to be of certain size, > > so let's add some compile time asserts to enforce that.. > > > > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > Not sure this is worth it really. Next patch seems more valuable. Not > against it, but imo needs someone to really rave about it. The hardware has a fixed number of registers for this stuff, so these arrays had better match that 1:1. > -Daniel > > > --- > > drivers/gpu/drm/i915/intel_ddi.c | 15 +++++++++++++++ > > 1 file changed, 15 insertions(+) > > > > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c > > index 5d0b03d6d388..838cbbe33517 100644 > > --- a/drivers/gpu/drm/i915/intel_ddi.c > > +++ b/drivers/gpu/drm/i915/intel_ddi.c > > @@ -351,6 +351,10 @@ intel_dig_port_supports_hdmi(const struct intel_digital_port *intel_dig_port) > > static const struct ddi_buf_trans * > > skl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries) > > { > > + BUILD_BUG_ON(ARRAY_SIZE(skl_y_ddi_translations_dp) != 9); > > + BUILD_BUG_ON(ARRAY_SIZE(skl_u_ddi_translations_dp) != 9); > > + BUILD_BUG_ON(ARRAY_SIZE(skl_ddi_translations_dp) != 9); > > + > > if (IS_SKL_ULX(dev_priv)) { > > *n_entries = ARRAY_SIZE(skl_y_ddi_translations_dp); > > return skl_y_ddi_translations_dp; > > @@ -366,6 +370,10 @@ skl_get_buf_trans_dp(struct drm_i915_private *dev_priv, int *n_entries) > > static const struct ddi_buf_trans * > > skl_get_buf_trans_edp(struct drm_i915_private *dev_priv, int *n_entries) > > { > > + BUILD_BUG_ON(ARRAY_SIZE(skl_y_ddi_translations_edp) != 10); > > + BUILD_BUG_ON(ARRAY_SIZE(skl_u_ddi_translations_edp) != 10); > > + BUILD_BUG_ON(ARRAY_SIZE(skl_ddi_translations_edp) != 10); > > + > > if (dev_priv->edp_low_vswing) { > > if (IS_SKL_ULX(dev_priv)) { > > *n_entries = ARRAY_SIZE(skl_y_ddi_translations_edp); > > @@ -436,6 +444,10 @@ static void intel_prepare_ddi_buffers(struct drm_i915_private *dev_priv, > > dev_priv->vbt.ddi_port_info[port].dp_boost_level) > > iboost_bit = 1<<31; > > } else if (IS_BROADWELL(dev_priv)) { > > + BUILD_BUG_ON(ARRAY_SIZE(bdw_ddi_translations_fdi) != 9); > > + BUILD_BUG_ON(ARRAY_SIZE(bdw_ddi_translations_dp) != 9); > > + BUILD_BUG_ON(ARRAY_SIZE(bdw_ddi_translations_edp) != 9); > > + > > ddi_translations_fdi = bdw_ddi_translations_fdi; > > ddi_translations_dp = bdw_ddi_translations_dp; > > ddi_translations_edp = bdw_ddi_translations_edp; > > @@ -445,6 +457,9 @@ static void intel_prepare_ddi_buffers(struct drm_i915_private *dev_priv, > > n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi); > > hdmi_default_entry = 7; > > } else if (IS_HASWELL(dev_priv)) { > > + BUILD_BUG_ON(ARRAY_SIZE(hsw_ddi_translations_fdi) != 9); > > + BUILD_BUG_ON(ARRAY_SIZE(hsw_ddi_translations_dp) != 9); > > + > > ddi_translations_fdi = hsw_ddi_translations_fdi; > > ddi_translations_dp = hsw_ddi_translations_dp; > > ddi_translations_edp = hsw_ddi_translations_dp; > > -- > > 2.4.10 > > > > _______________________________________________ > > Intel-gfx mailing list > > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > > http://lists.freedesktop.org/mailman/listinfo/intel-gfx > > -- > Daniel Vetter > Software Engineer, Intel Corporation > http://blog.ffwll.ch -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx