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drm/i915/dp_link_training: Use link_training as base pointer in debugfs

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Retrieve the link_training pointer from the connector and derive the DP
pointer from it in debugfs entries.

This prepares for a follow-up change where values exposed via debugfs
entries will be retrieved from the link training state.

v2: Join unnecessarily wrapped lines. (Jani)

Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260601093836.3057345-6-imre.deak@intel.com
This commit is contained in:
Imre Deak
2026-06-01 12:38:18 +03:00
parent a026b8ce9c
commit 4aa3b4b97e
1 changed files with 15 additions and 5 deletions
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20
drivers/gpu/drm/i915/display/intel_dp_link_training.c
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@@ -68,6 +68,11 @@ struct intel_dp_link_training {
struct intel_dp *dp;
};
static struct intel_dp_link_training *connector_to_link_training(struct intel_connector *connector)
{
return intel_attached_dp(connector)->link.training;
}
static void intel_dp_reset_lttpr_common_caps(struct intel_dp *intel_dp)
{
memset(intel_dp->lttpr_common_caps, 0, sizeof(intel_dp->lttpr_common_caps));
@@ -2322,7 +2327,8 @@ static int i915_dp_force_link_training_failure_show(void *data, u64 *val)
{
struct intel_connector *connector = to_intel_connector(data);
struct intel_display *display = to_intel_display(connector);
struct intel_dp *intel_dp = intel_attached_dp(connector);
struct intel_dp_link_training *link_training = connector_to_link_training(connector);
struct intel_dp *intel_dp = link_training->dp;
int err;
err = drm_modeset_lock_single_interruptible(&display->drm->mode_config.connection_mutex);
@@ -2342,7 +2348,8 @@ static int i915_dp_force_link_training_failure_write(void *data, u64 val)
{
struct intel_connector *connector = to_intel_connector(data);
struct intel_display *display = to_intel_display(connector);
struct intel_dp *intel_dp = intel_attached_dp(connector);
struct intel_dp_link_training *link_training = connector_to_link_training(connector);
struct intel_dp *intel_dp = link_training->dp;
int err;
if (val > 2)
@@ -2368,7 +2375,8 @@ static int i915_dp_force_link_retrain_show(void *data, u64 *val)
{
struct intel_connector *connector = to_intel_connector(data);
struct intel_display *display = to_intel_display(connector);
struct intel_dp *intel_dp = intel_attached_dp(connector);
struct intel_dp_link_training *link_training = connector_to_link_training(connector);
struct intel_dp *intel_dp = link_training->dp;
int err;
err = drm_modeset_lock_single_interruptible(&display->drm->mode_config.connection_mutex);
@@ -2388,7 +2396,8 @@ static int i915_dp_force_link_retrain_write(void *data, u64 val)
{
struct intel_connector *connector = to_intel_connector(data);
struct intel_display *display = to_intel_display(connector);
struct intel_dp *intel_dp = intel_attached_dp(connector);
struct intel_dp_link_training *link_training = connector_to_link_training(connector);
struct intel_dp *intel_dp = link_training->dp;
int err;
err = drm_modeset_lock_single_interruptible(&display->drm->mode_config.connection_mutex);
@@ -2413,7 +2422,8 @@ static int i915_dp_link_retrain_disabled_show(struct seq_file *m, void *data)
{
struct intel_connector *connector = to_intel_connector(m->private);
struct intel_display *display = to_intel_display(connector);
struct intel_dp *intel_dp = intel_attached_dp(connector);
struct intel_dp_link_training *link_training = connector_to_link_training(connector);
struct intel_dp *intel_dp = link_training->dp;
int err;
err = drm_modeset_lock_single_interruptible(&display->drm->mode_config.connection_mutex);