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drm/i915: Disable DPLLs before disconnecting the TC PHY

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Bspec requires disabling the DPLLs on TC ports before disconnecting the
port's PHY. Add a post_pll_disable encoder hook and move the call to
disconnect the port's PHY from the post_disable hook to the new hook.

Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323142035.1432621-28-imre.deak@intel.com
This commit is contained in:
Imre Deak
2023-03-23 16:20:33 +02:00
parent 3acac2d06a
commit b108bdd0e2
3 changed files with 29 additions and 3 deletions
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15
drivers/gpu/drm/i915/display/intel_ddi.c
View File

@@ -2720,9 +2720,6 @@ static void intel_ddi_post_disable(struct intel_atomic_state *state,
const struct drm_connector_state *old_conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
bool is_tc_port = intel_phy_is_tc(dev_priv, phy);
struct intel_crtc *slave_crtc;
if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST)) {
@@ -2772,6 +2769,17 @@ static void intel_ddi_post_disable(struct intel_atomic_state *state,
else
intel_ddi_post_disable_dp(state, encoder, old_crtc_state,
old_conn_state);
}
static void intel_ddi_post_pll_disable(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct drm_i915_private *i915 = to_i915(encoder->base.dev);
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
enum phy phy = intel_port_to_phy(i915, encoder->port);
bool is_tc_port = intel_phy_is_tc(i915, phy);
main_link_aux_power_domain_put(dig_port, old_crtc_state);
@@ -4398,6 +4406,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
encoder->pre_pll_enable = intel_ddi_pre_pll_enable;
encoder->pre_enable = intel_ddi_pre_enable;
encoder->disable = intel_disable_ddi;
encoder->post_pll_disable = intel_ddi_post_pll_disable;
encoder->post_disable = intel_ddi_post_disable;
encoder->update_pipe = intel_ddi_update_pipe;
encoder->get_hw_state = intel_ddi_get_hw_state;

2
drivers/gpu/drm/i915/display/intel_display.c
View File

@@ -1927,6 +1927,8 @@ static void hsw_crtc_disable(struct intel_atomic_state *state,
intel_disable_shared_dpll(old_crtc_state);
intel_encoders_post_pll_disable(state, crtc);
intel_dmc_disable_pipe(i915, crtc->pipe);
}

15
drivers/gpu/drm/i915/display/intel_dp_mst.c
View File

@@ -623,6 +623,20 @@ static void intel_mst_post_disable_dp(struct intel_atomic_state *state,
intel_dp->active_mst_links);
}
static void intel_mst_post_pll_disable_dp(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
struct intel_digital_port *dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &dig_port->dp;
if (intel_dp->active_mst_links == 0 &&
dig_port->base.post_pll_disable)
dig_port->base.post_pll_disable(state, encoder, old_crtc_state, old_conn_state);
}
static void intel_mst_pre_pll_enable_dp(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
@@ -1146,6 +1160,7 @@ intel_dp_create_fake_mst_encoder(struct intel_digital_port *dig_port, enum pipe
intel_encoder->compute_config_late = intel_dp_mst_compute_config_late;
intel_encoder->disable = intel_mst_disable_dp;
intel_encoder->post_disable = intel_mst_post_disable_dp;
intel_encoder->post_pll_disable = intel_mst_post_pll_disable_dp;
intel_encoder->update_pipe = intel_ddi_update_pipe;
intel_encoder->pre_pll_enable = intel_mst_pre_pll_enable_dp;
intel_encoder->pre_enable = intel_mst_pre_enable_dp;