Call the TypeC port flush_work and cleanup handlers without the modeset locks held. These don't require the locks, as the work takes - as it should be able to at any point in time - any locks it needs and by the time cleanup is called and after cleanup returns the encoder is not in use.
This is required by the next patch canceling a TypeC port work synchronously during encoder suspend and shutdown, where the work can take modeset locks as well, hence the canceling must be done without holding the locks. I also considered moving the modeset locking down to each encoder suspend()/shutdown() hook instead, however locking the full modeset state for each encoder separately would be odd, and the bigger change - affecting all encoders - is beyond the scope of this patchset. Cc: Ville Syrjälä <[email protected]> Signed-off-by: Imre Deak <[email protected]> --- drivers/gpu/drm/i915/display/intel_ddi.c | 27 +++++++++---------- .../drm/i915/display/intel_display_types.h | 12 +++++++++ drivers/gpu/drm/i915/i915_driver.c | 8 ++++++ 3 files changed, 33 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 813be957ed11b..7d09bd2412352 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -4617,31 +4617,27 @@ static bool intel_ddi_is_tc(struct drm_i915_private *i915, enum port port) static void intel_ddi_encoder_suspend(struct intel_encoder *encoder) { - struct intel_dp *intel_dp = enc_to_intel_dp(encoder); - struct drm_i915_private *i915 = dp_to_i915(intel_dp); - struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); - enum phy phy = intel_port_to_phy(i915, encoder->port); - intel_dp_encoder_suspend(encoder); +} - if (!intel_phy_is_tc(i915, phy)) - return; +static void intel_ddi_tc_encoder_suspend_complete(struct intel_encoder *encoder) +{ + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); intel_tc_port_flush_work(dig_port); } static void intel_ddi_encoder_shutdown(struct intel_encoder *encoder) { - struct intel_dp *intel_dp = enc_to_intel_dp(encoder); - struct drm_i915_private *i915 = dp_to_i915(intel_dp); - struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); - enum phy phy = intel_port_to_phy(i915, encoder->port); - intel_dp_encoder_shutdown(encoder); intel_hdmi_encoder_shutdown(encoder); +} - if (!intel_phy_is_tc(i915, phy)) - return; +static void intel_ddi_tc_encoder_shutdown_complete(struct intel_encoder *encoder) +{ + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); intel_tc_port_cleanup(dig_port); } @@ -4908,6 +4904,9 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port) is_legacy ? "legacy" : "non-legacy"); } + encoder->suspend_complete = intel_ddi_tc_encoder_suspend_complete; + encoder->shutdown_complete = intel_ddi_tc_encoder_shutdown_complete; + if (intel_tc_port_init(dig_port, is_legacy) < 0) goto err; } diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 270c4c84a2920..88b2a55d19f21 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -233,13 +233,25 @@ struct intel_encoder { * Called during system suspend after all pending requests for the * encoder are flushed (for example for DP AUX transactions) and * device interrupts are disabled. + * All modeset locks are held while the hook is called. */ void (*suspend)(struct intel_encoder *); + /* + * Called without the modeset locks held after the suspend() hook for + * all encoders have been called. + */ + void (*suspend_complete)(struct intel_encoder *encoder); /* * Called during system reboot/shutdown after all the * encoders have been disabled and suspended. + * All modeset locks are held while the hook is called. */ void (*shutdown)(struct intel_encoder *encoder); + /* + * Called without the modeset locks held after the shutdown() hook for + * all encoders have been called. + */ + void (*shutdown_complete)(struct intel_encoder *encoder); /* * Enable/disable the clock to the port. */ diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c index fd198700272b1..705ba65f2ff9a 100644 --- a/drivers/gpu/drm/i915/i915_driver.c +++ b/drivers/gpu/drm/i915/i915_driver.c @@ -964,6 +964,10 @@ static void intel_suspend_encoders(struct drm_i915_private *dev_priv) if (encoder->suspend) encoder->suspend(encoder); drm_modeset_unlock_all(&dev_priv->drm); + + for_each_intel_encoder(&dev_priv->drm, encoder) + if (encoder->suspend_complete) + encoder->suspend_complete(encoder); } static void intel_shutdown_encoders(struct drm_i915_private *dev_priv) @@ -978,6 +982,10 @@ static void intel_shutdown_encoders(struct drm_i915_private *dev_priv) if (encoder->shutdown) encoder->shutdown(encoder); drm_modeset_unlock_all(&dev_priv->drm); + + for_each_intel_encoder(&dev_priv->drm, encoder) + if (encoder->shutdown_complete) + encoder->shutdown_complete(encoder); } void i915_driver_shutdown(struct drm_i915_private *i915) -- 2.37.2
