diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_mst.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_mst.c | 56 |
1 files changed, 43 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index f29e51ce489c..8273f2e07427 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -33,6 +33,7 @@ #include "intel_connector.h" #include "intel_ddi.h" #include "intel_display_types.h" +#include "intel_hotplug.h" #include "intel_dp.h" #include "intel_dp_mst.h" #include "intel_dpio_phy.h" @@ -316,6 +317,25 @@ intel_dp_mst_atomic_check(struct drm_connector *connector, return ret; } +static void clear_act_sent(struct intel_dp *intel_dp) +{ + struct drm_i915_private *i915 = dp_to_i915(intel_dp); + + intel_de_write(i915, intel_dp->regs.dp_tp_status, + DP_TP_STATUS_ACT_SENT); +} + +static void wait_for_act_sent(struct intel_dp *intel_dp) +{ + struct drm_i915_private *i915 = dp_to_i915(intel_dp); + + if (intel_de_wait_for_set(i915, intel_dp->regs.dp_tp_status, + DP_TP_STATUS_ACT_SENT, 1)) + drm_err(&i915->drm, "Timed out waiting for ACT sent\n"); + + drm_dp_check_act_status(&intel_dp->mst_mgr); +} + static void intel_mst_disable_dp(struct intel_atomic_state *state, struct intel_encoder *encoder, const struct intel_crtc_state *old_crtc_state, @@ -369,6 +389,8 @@ static void intel_mst_post_disable_dp(struct intel_atomic_state *state, drm_dp_update_payload_part2(&intel_dp->mst_mgr); + clear_act_sent(intel_dp); + val = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder)); val &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC; @@ -376,11 +398,7 @@ static void intel_mst_post_disable_dp(struct intel_atomic_state *state, TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder), val); - if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status, - DP_TP_STATUS_ACT_SENT, 1)) - drm_err(&dev_priv->drm, - "Timed out waiting for ACT sent when disabling\n"); - drm_dp_check_act_status(&intel_dp->mst_mgr); + wait_for_act_sent(intel_dp); drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port); @@ -451,7 +469,6 @@ static void intel_mst_pre_enable_dp(struct intel_atomic_state *state, struct intel_connector *connector = to_intel_connector(conn_state->connector); int ret; - u32 temp; bool first_mst_stream; /* MST encoders are bound to a crtc, not to a connector, @@ -484,8 +501,6 @@ static void intel_mst_pre_enable_dp(struct intel_atomic_state *state, drm_err(&dev_priv->drm, "failed to allocate vcpi\n"); intel_dp->active_mst_links++; - temp = intel_de_read(dev_priv, intel_dp->regs.dp_tp_status); - intel_de_write(dev_priv, intel_dp->regs.dp_tp_status, temp); ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr); @@ -513,19 +528,25 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state, struct intel_digital_port *intel_dig_port = intel_mst->primary; struct intel_dp *intel_dp = &intel_dig_port->dp; struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); + u32 val; drm_WARN_ON(&dev_priv->drm, pipe_config->has_pch_encoder); + clear_act_sent(intel_dp); + intel_ddi_enable_transcoder_func(encoder, pipe_config); + val = intel_de_read(dev_priv, + TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder)); + val |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC; + intel_de_write(dev_priv, + TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder), + val); + drm_dbg_kms(&dev_priv->drm, "active links %d\n", intel_dp->active_mst_links); - if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status, - DP_TP_STATUS_ACT_SENT, 1)) - drm_err(&dev_priv->drm, "Timed out waiting for ACT sent\n"); - - drm_dp_check_act_status(&intel_dp->mst_mgr); + wait_for_act_sent(intel_dp); drm_dp_update_payload_part2(&intel_dp->mst_mgr); @@ -773,8 +794,17 @@ err: return NULL; } +static void +intel_dp_mst_poll_hpd_irq(struct drm_dp_mst_topology_mgr *mgr) +{ + struct intel_dp *intel_dp = container_of(mgr, struct intel_dp, mst_mgr); + + intel_hpd_trigger_irq(dp_to_dig_port(intel_dp)); +} + static const struct drm_dp_mst_topology_cbs mst_cbs = { .add_connector = intel_dp_add_mst_connector, + .poll_hpd_irq = intel_dp_mst_poll_hpd_irq, }; static struct intel_dp_mst_encoder * |