On Tue, 08 May 2018, Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Replace dev_priv->vbt.edp.support with
> dev_priv->vbt.int_lvds_support. We'll want to extend its
> use beyond the LVDS vs. eDP case in the future.
>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
> Cc: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 2 +-
> drivers/gpu/drm/i915/intel_bios.c | 5 ++++-
> drivers/gpu/drm/i915/intel_lvds.c | 9 +++++----
> 3 files changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 04e27806e581..3bdc7cfd4189 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -1052,6 +1052,7 @@ struct intel_vbt_data {
> unsigned int lvds_vbt:1;
> unsigned int int_crt_support:1;
> unsigned int lvds_use_ssc:1;
> + unsigned int int_lvds_support:1;
> unsigned int display_clock_mode:1;
> unsigned int fdi_rx_polarity_inverted:1;
> unsigned int panel_type:4;
> @@ -1067,7 +1068,6 @@ struct intel_vbt_data {
> int vswing;
> bool low_vswing;
> bool initialized;
> - bool support;
> int bpp;
> struct edp_power_seq pps;
> } edp;
> diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
> index 702d3fab97fc..49c6816d008c 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -519,7 +519,7 @@ parse_driver_features(struct drm_i915_private *dev_priv,
> return;
>
> if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
> - dev_priv->vbt.edp.support = 1;
> + dev_priv->vbt.int_lvds_support = 0;
Sorry to nitpick, but this now changes behaviour for pre-PCH split
platforms. Worse, patch 2 then reverts that change. I think you could've
added the if (gen >= 5) check already here to not modify behaviour.
parse_edp() also needs to drop references to dev_priv->vbt.edp.support.
BR,
Jani.
>
> DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled);
> /*
> @@ -1512,6 +1512,9 @@ init_vbt_defaults(struct drm_i915_private *dev_priv)
> dev_priv->vbt.int_tv_support = 1;
> dev_priv->vbt.int_crt_support = 1;
>
> + /* driver features */
> + dev_priv->vbt.int_lvds_support = 1;
> +
> /* Default to using SSC */
> dev_priv->vbt.lvds_use_ssc = 1;
> /*
> diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
> index d35d2d50f595..05d012358df8 100644
> --- a/drivers/gpu/drm/i915/intel_lvds.c
> +++ b/drivers/gpu/drm/i915/intel_lvds.c
> @@ -965,6 +965,11 @@ void intel_lvds_init(struct drm_i915_private *dev_priv)
> if (dmi_check_system(intel_no_lvds))
> return;
>
> + if (!dev_priv->vbt.int_lvds_support) {
> + DRM_DEBUG_KMS("Internal LVDS support disabled by VBT\n");
> + return;
> + }
> +
> if (HAS_PCH_SPLIT(dev_priv))
> lvds_reg = PCH_LVDS;
> else
> @@ -975,10 +980,6 @@ void intel_lvds_init(struct drm_i915_private *dev_priv)
> if (HAS_PCH_SPLIT(dev_priv)) {
> if ((lvds & LVDS_DETECTED) == 0)
> return;
> - if (dev_priv->vbt.edp.support) {
> - DRM_DEBUG_KMS("disable LVDS for eDP support\n");
> - return;
> - }
> }
>
> pin = GMBUS_PIN_PANEL;
--
Jani Nikula, Intel Open Source Technology Center
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