drm/i915: Move the lspcon resume from .reset() to intel_dp_sink_dpms()

Rather that try to trick LSPCON back into PCON mode from the .reset()
hook let's just do that as a regular part of the normal modeset
sequence, which is going to take care of the system resume case. During
a normal modeset this should normally be a nop as the mode should have
already been switched by .detect().

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201016194800.25581-1-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 52075a2..4784aae 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -3490,6 +3490,8 @@ void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode)
        } else {
                struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
 
+               lspcon_resume(dp_to_dig_port(intel_dp));
+
                /*
                 * When turning on, we need to retry for 1ms to give the sink
                 * time to wake up.
@@ -6782,14 +6784,11 @@ void intel_dp_encoder_reset(struct drm_encoder *encoder)
 {
        struct drm_i915_private *dev_priv = to_i915(encoder->dev);
        struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
-       struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
        intel_wakeref_t wakeref;
 
        if (!HAS_DDI(dev_priv))
                intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
 
-       lspcon_resume(dig_port);
-
        intel_dp->reset_link_params = true;
 
        if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&