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drm/i915/panel: register drm_panel and call prepare/unprepare for eDP

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Allocate and register drm_panel to allow the panel_follower framework to
detect the eDP panel and pass drm_connector::kdev device to drm_panel
allocation for matching.
Call drm_panel_prepare/unprepare in ddi_enable for eDP to allow the
followers to get notified of the panel power state changes.

Note: This is for eDP with DDI platforms only.

v2: remove backlight setup from panel_register (Jani)
v3: Updated the commit message (Jani)

Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://lore.kernel.org/r/20250624-edp_panel-v3-1-e8197b6d9fde@intel.com
This commit is contained in:
Arun R Murthy
2025-06-24 12:24:58 +05:30
committed by Suraj Kandpal
parent c9c325072b
commit 41de3cec07
2 changed files with 6 additions and 1 deletions
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4
drivers/gpu/drm/i915/display/intel_ddi.c
View File

@@ -73,6 +73,7 @@
#include "intel_lspcon.h"
#include "intel_mg_phy_regs.h"
#include "intel_modeset_lock.h"
#include "intel_panel.h"
#include "intel_pfit.h"
#include "intel_pps.h"
#include "intel_psr.h"
@@ -3355,6 +3356,8 @@ static void intel_ddi_enable_dp(struct intel_atomic_state *state,
drm_connector_update_privacy_screen(conn_state);
intel_edp_backlight_on(crtc_state, conn_state);
intel_panel_prepare(crtc_state, conn_state);
if (!intel_lspcon_active(dig_port) || intel_dp_has_hdmi_sink(&dig_port->dp))
intel_dp_set_infoframes(encoder, true, crtc_state, conn_state);
@@ -3552,6 +3555,7 @@ static void intel_ddi_disable_dp(struct intel_atomic_state *state,
intel_dp->link.active = false;
intel_panel_unprepare(old_conn_state);
intel_psr_disable(intel_dp, old_crtc_state);
intel_alpm_disable(intel_dp);
intel_edp_backlight_off(old_conn_state);

3
drivers/gpu/drm/i915/display/intel_panel.c
View File

@@ -515,7 +515,8 @@ int intel_panel_register(struct intel_connector *connector)
if (ret)
return ret;
if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI) {
if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI ||
connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) {
struct device *dev = connector->base.kdev;
struct drm_panel *base;