[Intel-gfx] [PATCH 1/3] drm/i915: Refactor code to select the DDI buf translation table
Ville Syrjälä
ville.syrjala at linux.intel.com
Fri Feb 24 12:49:54 UTC 2017
On Thu, Feb 23, 2017 at 07:49:21PM +0200, David Weinehall wrote:
> On Thu, Feb 23, 2017 at 07:35:05PM +0200, ville.syrjala at linux.intel.com wrote:
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> >
> > Split the code to select the correct trasnslation table into DP,
>
> translations, superfluous space before DP
Fixed. And series pushed to dinq. Thanks for the review.
>
> > eDP and FDI specific helpers. This reduces the clutter in
> > intel_prepare_dp_ddi_buffers(), and we'll have other uses for some
> > of these new helper functions later on.
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Reviewed-by: David Weinehall <david.weinehall at linux.intel.com>
>
> > ---
> > drivers/gpu/drm/i915/intel_ddi.c | 126 +++++++++++++++++++++++----------------
> > 1 file changed, 73 insertions(+), 53 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> > index cd6fedd229a0..5e4b0172810d 100644
> > --- a/drivers/gpu/drm/i915/intel_ddi.c
> > +++ b/drivers/gpu/drm/i915/intel_ddi.c
> > @@ -468,6 +468,59 @@ static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port por
> > return hdmi_level;
> > }
> >
> > +static const struct ddi_buf_trans *
> > +intel_ddi_get_buf_trans_dp(struct drm_i915_private *dev_priv,
> > + int *n_entries)
> > +{
> > + if (IS_KABYLAKE(dev_priv)) {
> > + return kbl_get_buf_trans_dp(dev_priv, n_entries);
> > + } else if (IS_SKYLAKE(dev_priv)) {
> > + return skl_get_buf_trans_dp(dev_priv, n_entries);
> > + } else if (IS_BROADWELL(dev_priv)) {
> > + *n_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
> > + return bdw_ddi_translations_dp;
> > + } else if (IS_HASWELL(dev_priv)) {
> > + *n_entries = ARRAY_SIZE(hsw_ddi_translations_dp);
> > + return hsw_ddi_translations_dp;
> > + }
> > +
> > + *n_entries = 0;
> > + return NULL;
> > +}
> > +
> > +static const struct ddi_buf_trans *
> > +intel_ddi_get_buf_trans_edp(struct drm_i915_private *dev_priv,
> > + int *n_entries)
> > +{
> > + if (IS_KABYLAKE(dev_priv) || IS_SKYLAKE(dev_priv)) {
> > + return skl_get_buf_trans_edp(dev_priv, n_entries);
> > + } else if (IS_BROADWELL(dev_priv)) {
> > + return bdw_get_buf_trans_edp(dev_priv, n_entries);
> > + } else if (IS_HASWELL(dev_priv)) {
> > + *n_entries = ARRAY_SIZE(hsw_ddi_translations_dp);
> > + return hsw_ddi_translations_dp;
> > + }
> > +
> > + *n_entries = 0;
> > + return NULL;
> > +}
> > +
> > +static const struct ddi_buf_trans *
> > +intel_ddi_get_buf_trans_fdi(struct drm_i915_private *dev_priv,
> > + int *n_entries)
> > +{
> > + if (IS_BROADWELL(dev_priv)) {
> > + *n_entries = ARRAY_SIZE(hsw_ddi_translations_fdi);
> > + return hsw_ddi_translations_fdi;
> > + } else if (IS_HASWELL(dev_priv)) {
> > + *n_entries = ARRAY_SIZE(hsw_ddi_translations_fdi);
> > + return hsw_ddi_translations_fdi;
> > + }
> > +
> > + *n_entries = 0;
> > + return NULL;
> > +}
> > +
> > /*
> > * Starting with Haswell, DDI port buffers must be programmed with correct
> > * values in advance. This function programs the correct values for
> > @@ -477,45 +530,29 @@ void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder)
> > {
> > struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> > u32 iboost_bit = 0;
> > - int i, n_dp_entries, n_edp_entries, size;
> > + int i, n_entries;
> > enum port port = intel_ddi_get_encoder_port(encoder);
> > - const struct ddi_buf_trans *ddi_translations_fdi;
> > - const struct ddi_buf_trans *ddi_translations_dp;
> > - const struct ddi_buf_trans *ddi_translations_edp;
> > const struct ddi_buf_trans *ddi_translations;
> >
> > if (IS_GEN9_LP(dev_priv))
> > return;
> >
> > - if (IS_KABYLAKE(dev_priv)) {
> > - ddi_translations_fdi = NULL;
> > - ddi_translations_dp =
> > - kbl_get_buf_trans_dp(dev_priv, &n_dp_entries);
> > - ddi_translations_edp =
> > - skl_get_buf_trans_edp(dev_priv, &n_edp_entries);
> > - } else if (IS_SKYLAKE(dev_priv)) {
> > - ddi_translations_fdi = NULL;
> > - ddi_translations_dp =
> > - skl_get_buf_trans_dp(dev_priv, &n_dp_entries);
> > - ddi_translations_edp =
> > - skl_get_buf_trans_edp(dev_priv, &n_edp_entries);
> > - } else if (IS_BROADWELL(dev_priv)) {
> > - ddi_translations_fdi = bdw_ddi_translations_fdi;
> > - ddi_translations_dp = bdw_ddi_translations_dp;
> > - ddi_translations_edp = bdw_get_buf_trans_edp(dev_priv, &n_edp_entries);
> > - n_dp_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
> > - } else if (IS_HASWELL(dev_priv)) {
> > - ddi_translations_fdi = hsw_ddi_translations_fdi;
> > - ddi_translations_dp = hsw_ddi_translations_dp;
> > - ddi_translations_edp = hsw_ddi_translations_dp;
> > - n_dp_entries = n_edp_entries = ARRAY_SIZE(hsw_ddi_translations_dp);
> > - } else {
> > - WARN(1, "ddi translation table missing\n");
> > - ddi_translations_edp = bdw_ddi_translations_dp;
> > - ddi_translations_fdi = bdw_ddi_translations_fdi;
> > - ddi_translations_dp = bdw_ddi_translations_dp;
> > - n_edp_entries = ARRAY_SIZE(bdw_ddi_translations_edp);
> > - n_dp_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
> > + switch (encoder->type) {
> > + case INTEL_OUTPUT_EDP:
> > + ddi_translations = intel_ddi_get_buf_trans_edp(dev_priv,
> > + &n_entries);
> > + break;
> > + case INTEL_OUTPUT_DP:
> > + ddi_translations = intel_ddi_get_buf_trans_dp(dev_priv,
> > + &n_entries);
> > + break;
> > + case INTEL_OUTPUT_ANALOG:
> > + ddi_translations = intel_ddi_get_buf_trans_fdi(dev_priv,
> > + &n_entries);
> > + break;
> > + default:
> > + MISSING_CASE(encoder->type);
> > + return;
> > }
> >
> > if (IS_GEN9_BC(dev_priv)) {
> > @@ -525,28 +562,11 @@ void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder)
> >
> > if (WARN_ON(encoder->type == INTEL_OUTPUT_EDP &&
> > port != PORT_A && port != PORT_E &&
> > - n_edp_entries > 9))
> > - n_edp_entries = 9;
> > - }
> > -
> > - switch (encoder->type) {
> > - case INTEL_OUTPUT_EDP:
> > - ddi_translations = ddi_translations_edp;
> > - size = n_edp_entries;
> > - break;
> > - case INTEL_OUTPUT_DP:
> > - ddi_translations = ddi_translations_dp;
> > - size = n_dp_entries;
> > - break;
> > - case INTEL_OUTPUT_ANALOG:
> > - ddi_translations = ddi_translations_fdi;
> > - size = n_dp_entries;
> > - break;
> > - default:
> > - BUG();
> > + n_entries > 9))
> > + n_entries = 9;
> > }
> >
> > - for (i = 0; i < size; i++) {
> > + for (i = 0; i < n_entries; i++) {
> > I915_WRITE(DDI_BUF_TRANS_LO(port, i),
> > ddi_translations[i].trans1 | iboost_bit);
> > I915_WRITE(DDI_BUF_TRANS_HI(port, i),
> > --
> > 2.10.2
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel OTC
More information about the Intel-gfx
mailing list