On Tue, Jul 12, 2016 at 03:59:30PM +0300, ville.syrjala@xxxxxxxxxxxxxxx wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Currently we fail to program the iboost stuff for HDMI/DVI. Let's remedy
> that.
>
> Cc: David Weinehall <david.weinehall@xxxxxxxxxxxxxxx>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reviewed-by: David Weinehall <david.weinehall@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_ddi.c | 51 +++++++++++++++++++++++++++++++---------
> 1 file changed, 40 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> index 78e1fdaec86d..09fe580dfd49 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -388,6 +388,40 @@ skl_get_buf_trans_hdmi(struct drm_i915_private *dev_priv, int *n_entries)
> }
> }
>
> +static int intel_ddi_hdmi_level(struct drm_i915_private *dev_priv, enum port port)
> +{
> + int n_hdmi_entries;
> + int hdmi_level;
> + int hdmi_default_entry;
> +
> + hdmi_level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift;
> +
> + if (IS_BROXTON(dev_priv))
> + return hdmi_level;
> +
> + if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
> + skl_get_buf_trans_hdmi(dev_priv, &n_hdmi_entries);
> + hdmi_default_entry = 8;
> + } else if (IS_BROADWELL(dev_priv)) {
> + n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi);
> + hdmi_default_entry = 7;
> + } else if (IS_HASWELL(dev_priv)) {
> + n_hdmi_entries = ARRAY_SIZE(hsw_ddi_translations_hdmi);
> + hdmi_default_entry = 6;
> + } else {
> + WARN(1, "ddi translation table missing\n");
> + n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi);
> + hdmi_default_entry = 7;
> + }
> +
> + /* Choose a good default if VBT is badly populated */
> + if (hdmi_level == HDMI_LEVEL_SHIFT_UNKNOWN ||
> + hdmi_level >= n_hdmi_entries)
> + hdmi_level = hdmi_default_entry;
> +
> + return hdmi_level;
> +}
> +
> /*
> * Starting with Haswell, DDI port buffers must be programmed with correct
> * values in advance. The buffer values are different for FDI and DP modes,
> @@ -399,7 +433,7 @@ void intel_prepare_ddi_buffer(struct intel_encoder *encoder)
> {
> struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> u32 iboost_bit = 0;
> - int i, n_hdmi_entries, n_dp_entries, n_edp_entries, hdmi_default_entry,
> + int i, n_hdmi_entries, n_dp_entries, n_edp_entries,
> size;
> int hdmi_level;
> enum port port;
> @@ -410,7 +444,7 @@ void intel_prepare_ddi_buffer(struct intel_encoder *encoder)
> const struct ddi_buf_trans *ddi_translations;
>
> port = intel_ddi_get_encoder_port(encoder);
> - hdmi_level = dev_priv->vbt.ddi_port_info[port].hdmi_level_shift;
> + hdmi_level = intel_ddi_hdmi_level(dev_priv, port);
>
> if (IS_BROXTON(dev_priv)) {
> if (encoder->type != INTEL_OUTPUT_HDMI)
> @@ -430,7 +464,6 @@ void intel_prepare_ddi_buffer(struct intel_encoder *encoder)
> skl_get_buf_trans_edp(dev_priv, &n_edp_entries);
> ddi_translations_hdmi =
> skl_get_buf_trans_hdmi(dev_priv, &n_hdmi_entries);
> - hdmi_default_entry = 8;
> /* If we're boosting the current, set bit 31 of trans1 */
> if (dev_priv->vbt.ddi_port_info[port].hdmi_boost_level ||
> dev_priv->vbt.ddi_port_info[port].dp_boost_level)
> @@ -456,7 +489,6 @@ void intel_prepare_ddi_buffer(struct intel_encoder *encoder)
>
> n_dp_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
> n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi);
> - hdmi_default_entry = 7;
> } else if (IS_HASWELL(dev_priv)) {
> ddi_translations_fdi = hsw_ddi_translations_fdi;
> ddi_translations_dp = hsw_ddi_translations_dp;
> @@ -464,7 +496,6 @@ void intel_prepare_ddi_buffer(struct intel_encoder *encoder)
> ddi_translations_hdmi = hsw_ddi_translations_hdmi;
> n_dp_entries = n_edp_entries = ARRAY_SIZE(hsw_ddi_translations_dp);
> n_hdmi_entries = ARRAY_SIZE(hsw_ddi_translations_hdmi);
> - hdmi_default_entry = 6;
> } else {
> WARN(1, "ddi translation table missing\n");
> ddi_translations_edp = bdw_ddi_translations_dp;
> @@ -474,7 +505,6 @@ void intel_prepare_ddi_buffer(struct intel_encoder *encoder)
> n_edp_entries = ARRAY_SIZE(bdw_ddi_translations_edp);
> n_dp_entries = ARRAY_SIZE(bdw_ddi_translations_dp);
> n_hdmi_entries = ARRAY_SIZE(bdw_ddi_translations_hdmi);
> - hdmi_default_entry = 7;
> }
>
> switch (encoder->type) {
> @@ -505,11 +535,6 @@ void intel_prepare_ddi_buffer(struct intel_encoder *encoder)
> if (encoder->type != INTEL_OUTPUT_HDMI)
> return;
>
> - /* Choose a good default if VBT is badly populated */
> - if (hdmi_level == HDMI_LEVEL_SHIFT_UNKNOWN ||
> - hdmi_level >= n_hdmi_entries)
> - hdmi_level = hdmi_default_entry;
> -
> /* Entry 9 is for HDMI: */
> I915_WRITE(DDI_BUF_TRANS_LO(port, i),
> ddi_translations_hdmi[hdmi_level].trans1 | iboost_bit);
> @@ -1647,6 +1672,10 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)
> intel_dp_stop_link_train(intel_dp);
> } else if (type == INTEL_OUTPUT_HDMI) {
> struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
> + int level = intel_ddi_hdmi_level(dev_priv, port);
> +
> + if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv))
> + skl_ddi_set_iboost(intel_encoder, level);
>
> intel_hdmi->set_infoframes(encoder,
> crtc->config->has_hdmi_sink,
> --
> 2.7.4
>
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