@@ -218,6 +218,7 @@ enum aux_ch {
#define aux_ch_name(a) ((a) + 'A')
enum intel_display_power_domain {
+ POWER_DOMAIN_DISPLAY_CORE,
POWER_DOMAIN_PIPE_A,
POWER_DOMAIN_PIPE_B,
POWER_DOMAIN_PIPE_C,
@@ -214,15 +214,21 @@ static int intel_dp_get_fia_supported_lane_count(struct intel_dp *intel_dp)
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
+ intel_wakeref_t wakeref;
u32 lane_info;
if (tc_port == PORT_TC_NONE || dig_port->tc_type != TC_PORT_TYPEC)
return 4;
+ wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_DISPLAY_CORE);
+
lane_info = (I915_READ(PORT_TX_DFLEXDPSP) &
DP_LANE_ASSIGNMENT_MASK(tc_port)) >>
DP_LANE_ASSIGNMENT_SHIFT(tc_port);
+ intel_display_power_put_async(dev_priv, POWER_DOMAIN_DISPLAY_CORE,
+ wakeref);
+
switch (lane_info) {
default:
MISSING_CASE(lane_info);
@@ -5292,7 +5298,7 @@ static bool icl_digital_port_connected(struct intel_encoder *encoder)
*
* Return %true if port is connected, %false otherwise.
*/
-bool intel_digital_port_connected(struct intel_encoder *encoder)
+static bool __intel_digital_port_connected(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
@@ -5322,6 +5328,20 @@ bool intel_digital_port_connected(struct intel_encoder *encoder)
return false;
}
+bool intel_digital_port_connected(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ intel_wakeref_t wakeref;
+ bool res;
+
+ wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_DISPLAY_CORE);
+ res = __intel_digital_port_connected(encoder);
+ intel_display_power_put_async(dev_priv, POWER_DOMAIN_DISPLAY_CORE,
+ wakeref);
+
+ return res;
+}
+
static struct edid *
intel_dp_get_edid(struct intel_dp *intel_dp)
{
@@ -5375,16 +5395,11 @@ 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;
- enum intel_display_power_domain aux_domain =
- intel_aux_power_domain(dig_port);
- intel_wakeref_t wakeref;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
connector->base.id, connector->name);
WARN_ON(!drm_modeset_is_locked(&dev_priv->drm.mode_config.connection_mutex));
- wakeref = intel_display_power_get(dev_priv, aux_domain);
-
/* Can't disconnect eDP */
if (intel_dp_is_edp(intel_dp))
status = edp_detect(intel_dp);
@@ -5448,10 +5463,8 @@ intel_dp_detect(struct drm_connector *connector,
int ret;
ret = intel_dp_retrain_link(encoder, ctx);
- if (ret) {
- intel_display_power_put(dev_priv, aux_domain, wakeref);
+ if (ret)
return ret;
- }
}
/*
@@ -5473,7 +5486,6 @@ intel_dp_detect(struct drm_connector *connector,
if (status != connector_status_connected && !intel_dp->is_mst)
intel_dp_unset_edid(intel_dp);
- intel_display_power_put(dev_priv, aux_domain, wakeref);
return status;
}
@@ -373,6 +373,8 @@ const char *
intel_display_power_domain_str(enum intel_display_power_domain domain)
{
switch (domain) {
+ case POWER_DOMAIN_DISPLAY_CORE:
+ return "DISPLAY_CORE";
case POWER_DOMAIN_PIPE_A:
return "PIPE_A";
case POWER_DOMAIN_PIPE_B:
@@ -2313,6 +2315,7 @@ void intel_display_power_put(struct drm_i915_private *dev_priv,
BIT_ULL(POWER_DOMAIN_INIT))
#define VLV_DISPLAY_POWER_DOMAINS ( \
+ BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) | \
BIT_ULL(POWER_DOMAIN_PIPE_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
@@ -2359,6 +2362,7 @@ void intel_display_power_put(struct drm_i915_private *dev_priv,
BIT_ULL(POWER_DOMAIN_INIT))
#define CHV_DISPLAY_POWER_DOMAINS ( \
+ BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) | \
BIT_ULL(POWER_DOMAIN_PIPE_A) | \
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
We don't need the AUX power for the whole duration of the detect, only when we're doing AUX transfers. The AUX transfer function takes its own reference on the AUX power domain already. The two places during detect which access display core registers (not specific to a pipe/port/transcoder) only need the power domain that is required for that access. That power domain is equivalent to the device global power domain on most platforms (enabled whenever we hold a runtime PM reference) except on CHV/VLV where it's equivalent to the display power well. Add a new power domain that reflects the above, and use this at the two spots accessing registers. With that we can avoid taking the AUX reference for the whole duration of the detect function. Put the domains asynchronously to avoid the unneeded on-off-on toggling. Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> --- drivers/gpu/drm/i915/intel_display.h | 1 + drivers/gpu/drm/i915/intel_dp.c | 32 +++++++++++++++++-------- drivers/gpu/drm/i915/intel_runtime_pm.c | 4 ++++ 3 files changed, 27 insertions(+), 10 deletions(-)