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path: root/drivers/gpu/drm/i915/display/intel_dp_mst.c
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Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_mst.c')
-rw-r--r--drivers/gpu/drm/i915/display/intel_dp_mst.c86
1 files changed, 70 insertions, 16 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 054a009e800d..2c49d9ab86a2 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -45,6 +45,27 @@
#include "intel_hotplug.h"
#include "skl_scaler.h"
+static int intel_dp_mst_check_constraints(struct drm_i915_private *i915, int bpp,
+ const struct drm_display_mode *adjusted_mode,
+ struct intel_crtc_state *crtc_state,
+ bool dsc)
+{
+ if (intel_dp_is_uhbr(crtc_state) && DISPLAY_VER(i915) <= 13 && dsc) {
+ int output_bpp = bpp;
+ /* DisplayPort 2 128b/132b, bits per lane is always 32 */
+ int symbol_clock = crtc_state->port_clock / 32;
+
+ if (output_bpp * adjusted_mode->crtc_clock >=
+ symbol_clock * 72) {
+ drm_dbg_kms(&i915->drm, "UHBR check failed(required bw %d available %d)\n",
+ output_bpp * adjusted_mode->crtc_clock, symbol_clock * 72);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
static int intel_dp_mst_find_vcpi_slots_for_bpp(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state,
int max_bpp,
@@ -81,12 +102,16 @@ static int intel_dp_mst_find_vcpi_slots_for_bpp(struct intel_encoder *encoder,
}
for (bpp = max_bpp; bpp >= min_bpp; bpp -= step) {
+ drm_dbg_kms(&i915->drm, "Trying bpp %d\n", bpp);
+
+ ret = intel_dp_mst_check_constraints(i915, bpp, adjusted_mode, crtc_state, dsc);
+ if (ret)
+ continue;
+
crtc_state->pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock,
dsc ? bpp << 4 : bpp,
dsc);
- drm_dbg_kms(&i915->drm, "Trying bpp %d\n", bpp);
-
slots = drm_dp_atomic_find_time_slots(state, &intel_dp->mst_mgr,
connector->port,
crtc_state->pbn);
@@ -104,8 +129,8 @@ static int intel_dp_mst_find_vcpi_slots_for_bpp(struct intel_encoder *encoder,
}
}
- /* Despite slots are non-zero, we still failed the atomic check */
- if (ret && slots >= 0)
+ /* We failed to find a proper bpp/timeslots, return error */
+ if (ret)
slots = ret;
if (slots < 0) {
@@ -232,7 +257,7 @@ static int intel_dp_dsc_mst_compute_link_config(struct intel_encoder *encoder,
return slots;
}
- intel_link_compute_m_n(crtc_state->pipe_bpp,
+ intel_link_compute_m_n(crtc_state->dsc.compressed_bpp,
crtc_state->lane_count,
adjusted_mode->crtc_clock,
crtc_state->port_clock,
@@ -265,6 +290,19 @@ static int intel_dp_mst_update_slots(struct intel_encoder *encoder,
return 0;
}
+static bool intel_dp_mst_has_audio(const struct drm_connector_state *conn_state)
+{
+ const struct intel_digital_connector_state *intel_conn_state =
+ to_intel_digital_connector_state(conn_state);
+ struct intel_connector *connector =
+ to_intel_connector(conn_state->connector);
+
+ if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
+ return connector->port->has_audio;
+ else
+ return intel_conn_state->force_audio == HDMI_AUDIO_ON;
+}
+
static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config,
struct drm_connector_state *conn_state)
@@ -272,10 +310,6 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
struct intel_dp *intel_dp = &intel_mst->primary->dp;
- struct intel_connector *connector =
- to_intel_connector(conn_state->connector);
- struct intel_digital_connector_state *intel_conn_state =
- to_intel_digital_connector_state(conn_state);
const struct drm_display_mode *adjusted_mode =
&pipe_config->hw.adjusted_mode;
struct link_config_limits limits;
@@ -287,11 +321,9 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
pipe_config->has_pch_encoder = false;
- if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
- pipe_config->has_audio = connector->port->has_audio;
- else
- pipe_config->has_audio =
- intel_conn_state->force_audio == HDMI_AUDIO_ON;
+ pipe_config->has_audio =
+ intel_dp_mst_has_audio(conn_state) &&
+ intel_audio_compute_config(encoder, pipe_config, conn_state);
/*
* for MST we always configure max link bw - the spec doesn't
@@ -604,7 +636,7 @@ static void intel_mst_post_disable_dp(struct intel_atomic_state *state,
* no clock to the transcoder"
*/
if (DISPLAY_VER(dev_priv) < 12 || !last_mst_stream)
- intel_ddi_disable_pipe_clock(old_crtc_state);
+ intel_ddi_disable_transcoder_clock(old_crtc_state);
intel_mst->connector = NULL;
@@ -616,6 +648,20 @@ 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,
@@ -628,6 +674,13 @@ static void intel_mst_pre_pll_enable_dp(struct intel_atomic_state *state,
if (intel_dp->active_mst_links == 0)
dig_port->base.pre_pll_enable(state, &dig_port->base,
pipe_config, NULL);
+ else
+ /*
+ * The port PLL state needs to get updated for secondary
+ * streams as for the primary stream.
+ */
+ intel_ddi_update_active_dpll(state, &dig_port->base,
+ to_intel_crtc(pipe_config->uapi.crtc));
}
static void intel_mst_pre_enable_dp(struct intel_atomic_state *state,
@@ -684,7 +737,7 @@ static void intel_mst_pre_enable_dp(struct intel_atomic_state *state,
* here for the following ones.
*/
if (DISPLAY_VER(dev_priv) < 12 || !first_mst_stream)
- intel_ddi_enable_pipe_clock(encoder, pipe_config);
+ intel_ddi_enable_transcoder_clock(encoder, pipe_config);
intel_ddi_set_dp_msa(pipe_config, conn_state);
}
@@ -1139,6 +1192,7 @@ 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;
generated by cgit v1.2.3-70-g09d2 (git 2.51.1) at 2025-11-04 13:42:29 +0000