On Tue, Sep 18, 2018 at 12:20:07AM -0700, Dhinakaran Pandiyan wrote:
> The intel_dp->detect_done flag is no more useful. Pull
> intel_dp_long_pulse() into the lone caller,
>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_dp.c | 63 +++++++++++++---------------------------
> drivers/gpu/drm/i915/intel_drv.h | 1 -
> 2 files changed, 20 insertions(+), 44 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 8bf9afa5683c..d06bf4303814 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -5012,13 +5012,25 @@ intel_dp_unset_edid(struct intel_dp *intel_dp)
> }
>
> static int
> -intel_dp_long_pulse(struct intel_connector *connector,
> - struct drm_modeset_acquire_ctx *ctx)
> +intel_dp_detect(struct drm_connector *connector,
> + struct drm_modeset_acquire_ctx *ctx,
> + bool force)
> {
> - struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> - struct intel_dp *intel_dp = intel_attached_dp(&connector->base);
> - enum drm_connector_status status;
> + struct drm_i915_private *dev_priv = to_i915(connector->dev);
> + struct intel_dp *intel_dp = intel_attached_dp(connector);
> + int status;
> u8 sink_irq_vector = 0;
> + struct drm_crtc *crtc;
> +
> + DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
> + connector->base.id, connector->name);
> +
> + crtc = connector->state->crtc;
> + if (crtc) {
> + status = drm_modeset_lock(&crtc->mutex, ctx);
The 'status' name looks a bit weird here. I'm leaning towards keeping
the 'int ret' for this case.
Hmm. Actually, why are we even taking this lock here anyway? I would
imagine we only need it for the link retraining and
intel_dp_retrain_link() already grabs it so we should be able to
just drop this code. Would allow page flips and detect to execute
in parallel again.
> + if (status)
> + return status;
> + }
>
> WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
>
> @@ -5093,9 +5105,9 @@ intel_dp_long_pulse(struct intel_connector *connector,
> intel_dp->aux.i2c_defer_count = 0;
>
> intel_dp_set_edid(intel_dp);
> - if (intel_dp_is_edp(intel_dp) || connector->detect_edid)
> + if (intel_dp_is_edp(intel_dp) ||
> + to_intel_connector(connector)->detect_edid)
> status = connector_status_connected;
> - intel_dp->detect_done = true;
>
> /* Try to read the source of the interrupt */
> if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11 &&
> @@ -5120,37 +5132,6 @@ intel_dp_long_pulse(struct intel_connector *connector,
> return status;
> }
>
> -static int
> -intel_dp_detect(struct drm_connector *connector,
> - struct drm_modeset_acquire_ctx *ctx,
> - bool force)
> -{
> - struct intel_dp *intel_dp = intel_attached_dp(connector);
> - int status = connector->status;
> -
> - DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
> - connector->base.id, connector->name);
> -
> - /* If full detect is not performed yet, do a full detect */
> - if (!intel_dp->detect_done) {
> - struct drm_crtc *crtc;
> - int ret;
> -
> - crtc = connector->state->crtc;
> - if (crtc) {
> - ret = drm_modeset_lock(&crtc->mutex, ctx);
> - if (ret)
> - return ret;
> - }
> -
> - status = intel_dp_long_pulse(intel_dp->attached_connector, ctx);
> - }
> -
> - intel_dp->detect_done = false;
> -
> - return status;
> -}
> -
> static void
> intel_dp_force(struct drm_connector *connector)
> {
> @@ -5643,7 +5624,6 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
>
> if (long_hpd) {
> intel_dp->reset_link_params = true;
> - intel_dp->detect_done = false;
> return IRQ_NONE;
> }
>
> @@ -5660,7 +5640,6 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
> intel_dp->is_mst = false;
> drm_dp_mst_topology_mgr_set_mst(&intel_dp->mst_mgr,
> intel_dp->is_mst);
> - intel_dp->detect_done = false;
> goto put_power;
> }
> }
> @@ -5673,10 +5652,8 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
> /* Short pulse can signify loss of hdcp authentication */
> intel_hdcp_check_link(intel_dp->attached_connector);
>
> - if (!handled) {
> - intel_dp->detect_done = false;
> + if (!handled)
> goto put_power;
> - }
> }
>
> ret = IRQ_HANDLED;
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index bf1c38728a59..c7206a4764e5 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1070,7 +1070,6 @@ struct intel_dp {
> bool link_mst;
> bool link_trained;
> bool has_audio;
> - bool detect_done;
> bool reset_link_params;
> enum aux_ch aux_ch;
> uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
> --
> 2.14.1
--
Ville Syrjälä
Intel
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