Commit e60cff45 authored by Imre Deak's avatar Imre Deak
Browse files

drm/i915/dp: Enable DP tunnel BW allocation mode 



Detect DP tunnels and enable the BW allocation mode on them. Send a
hotplug notification to userspace in response to a BW change.

Reviewed-by: default avatarUma Shankar <uma.shankar@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240220211841.448846-22-imre.deak@intel.com
parent a32f3a95

drivers/gpu/drm/i915/display/intel_display_driver.c

+16 −4
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ 
#include "intel_dkl_phy.h"

#include "intel_dmc.h"

#include "intel_dp.h"

#include "intel_dp_tunnel.h"

#include "intel_dpll.h"

#include "intel_dpll_mgr.h"

#include "intel_fb.h"
@@ -434,10 +435,8 @@ int intel_display_driver_probe_nogem(struct drm_i915_private *i915) 


	for_each_pipe(i915, pipe) {

		ret = intel_crtc_init(i915, pipe);

		if (ret) {

			intel_mode_config_cleanup(i915);

			return ret;

		}

		if (ret)

			goto err_mode_config;

	}



	intel_plane_possible_crtcs_init(i915);
@@ -457,6 +456,10 @@ int intel_display_driver_probe_nogem(struct drm_i915_private *i915) 
	intel_vga_disable(i915);

	intel_setup_outputs(i915);



	ret = intel_dp_tunnel_mgr_init(i915);

	if (ret)

		goto err_hdcp;



	intel_display_driver_disable_user_access(i915);



	drm_modeset_lock_all(dev);
@@ -475,6 +478,13 @@ int intel_display_driver_probe_nogem(struct drm_i915_private *i915) 
		ilk_wm_sanitize(i915);



	return 0;



err_hdcp:

	intel_hdcp_component_fini(i915);

err_mode_config:

	intel_mode_config_cleanup(i915);



	return ret;

}



/* part #3: call after gem init */
@@ -598,6 +608,8 @@ void intel_display_driver_remove_noirq(struct drm_i915_private *i915) 


	intel_mode_config_cleanup(i915);



	intel_dp_tunnel_mgr_cleanup(i915);



	intel_overlay_cleanup(i915);



	intel_gmbus_teardown(i915);

drivers/gpu/drm/i915/display/intel_dp.c

+12 −2
Original line number Diff line number Diff line
@@ -5729,6 +5729,7 @@ intel_dp_detect(struct drm_connector *connector, 
	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);

	struct intel_encoder *encoder = &dig_port->base;

	enum drm_connector_status status;

	int ret;



	drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s]\n",

		    connector->base.id, connector->name);
@@ -5764,9 +5765,18 @@ intel_dp_detect(struct drm_connector *connector, 
							intel_dp->is_mst);

		}



		intel_dp_tunnel_disconnect(intel_dp);



		goto out;

	}



	ret = intel_dp_tunnel_detect(intel_dp, ctx);

	if (ret == -EDEADLK)

		return ret;



	if (ret == 1)

		intel_connector->base.epoch_counter++;



	intel_dp_detect_dsc_caps(intel_dp, intel_connector);



	intel_dp_configure_mst(intel_dp);
@@ -5797,8 +5807,6 @@ intel_dp_detect(struct drm_connector *connector, 
	 * with an IRQ_HPD, so force a link status check.

	 */

	if (!intel_dp_is_edp(intel_dp)) {

		int ret;



		ret = intel_dp_retrain_link(encoder, ctx);

		if (ret)

			return ret;
@@ -5938,6 +5946,8 @@ void intel_dp_encoder_flush_work(struct drm_encoder *encoder) 


	intel_dp_mst_encoder_cleanup(dig_port);



	intel_dp_tunnel_destroy(intel_dp);



	intel_pps_vdd_off_sync(intel_dp);



	/*