[Intel-gfx] [PATCH v2 3/4] drm/i915/dp: Trigger modeset if master_crtc or slaves bitmask changes

[Srivatsa, Anusha]

>-----Original Message-----
>From: Intel-gfx [mailto:intel-gfx-bounces at lists.freedesktop.org] On Behalf Of
>Manasi Navare
>Sent: Tuesday, April 23, 2019 8:49 AM
>To: intel-gfx at lists.freedesktop.org
>Subject: [Intel-gfx] [PATCH v2 3/4] drm/i915/dp: Trigger modeset if master_crtc
>or slaves bitmask changes
>
>Add the comparison between the current state and new_crtc_state for newly
>added master_crtc pointer and slave bitmask so that if any of those change then
>the curernt master-slave links have changed and we need to reconfigure the
>transcoder port sync register and hence trigger a full modeset.
>
>Suggested-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
>Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
>Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
>Cc: Matt Roper <matthew.d.roper at intel.com>
>Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
Looks good.

Reviewed-by: Anusha Srivatsa <anusha.srivatsa at intel.com>

>---
> drivers/gpu/drm/i915/intel_display.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
>diff --git a/drivers/gpu/drm/i915/intel_display.c
>b/drivers/gpu/drm/i915/intel_display.c
>index 81e8cb9fe221..4bd23e61c6fd 100644
>--- a/drivers/gpu/drm/i915/intel_display.c
>+++ b/drivers/gpu/drm/i915/intel_display.c
>@@ -12524,6 +12524,11 @@ intel_pipe_config_compare(struct
>drm_i915_private *dev_priv,
> 	PIPE_CONF_CHECK_INFOFRAME(spd);
> 	PIPE_CONF_CHECK_INFOFRAME(hdmi);
>
>+	if (INTEL_GEN(dev_priv) >= 11) {
>+		PIPE_CONF_CHECK_I(trans_port_sync_slaves);
>+		PIPE_CONF_CHECK_P(master_crtc);
>+	}
>+
> #undef PIPE_CONF_CHECK_X
> #undef PIPE_CONF_CHECK_I
> #undef PIPE_CONF_CHECK_BOOL
>--
>2.19.1
>
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