drm/i915: Track MST link bandwidth
Use the added helpers to track MST link bandwidth for atomic modesets. Link bw is acquired in the ->atomic_check() phase when CRTCs are being enabled with drm_atomic_find_vcpi_slots(). Similarly, link bw is released during ->atomic_check() with the connector helper callback ->atomic_check() when CRTCs are disabled. v6: active_changed does not alter vcpi allocations (Maarten) v5: Implement connector->atomic_check() in place of atomic_release() v4: Return an int from intel_dp_mst_atomic_release() (Maarten) v3: Handled the case where ->atomic_release() is called more than once during an atomic_check() for the same state. v2: Squashed atomic_release() implementation and caller (Daniel) Fixed logic for connector-crtc switching case (Daniel) Fixed logic for suspend-resume case. Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Archit Taneja <architt@codeaurora.org> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Harry Wentland <Harry.wentland@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1493421260-3146-1-git-send-email-dhinakaran.pandiyan@intel.com
This commit is contained in:
parent
edb1ed1ab7
commit
f424f55e31
|
@ -39,7 +39,7 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
|
|||
struct intel_dp *intel_dp = &intel_dig_port->dp;
|
||||
struct intel_connector *connector =
|
||||
to_intel_connector(conn_state->connector);
|
||||
struct drm_atomic_state *state;
|
||||
struct drm_atomic_state *state = pipe_config->base.state;
|
||||
int bpp;
|
||||
int lane_count, slots;
|
||||
const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
|
||||
|
@ -57,20 +57,24 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
|
|||
* seem to suggest we should do otherwise.
|
||||
*/
|
||||
lane_count = drm_dp_max_lane_count(intel_dp->dpcd);
|
||||
|
||||
pipe_config->lane_count = lane_count;
|
||||
|
||||
pipe_config->pipe_bpp = bpp;
|
||||
pipe_config->port_clock = intel_dp_max_link_rate(intel_dp);
|
||||
|
||||
state = pipe_config->base.state;
|
||||
pipe_config->port_clock = intel_dp_max_link_rate(intel_dp);
|
||||
|
||||
if (drm_dp_mst_port_has_audio(&intel_dp->mst_mgr, connector->port))
|
||||
pipe_config->has_audio = true;
|
||||
mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp);
|
||||
|
||||
mst_pbn = drm_dp_calc_pbn_mode(adjusted_mode->crtc_clock, bpp);
|
||||
pipe_config->pbn = mst_pbn;
|
||||
slots = drm_dp_find_vcpi_slots(&intel_dp->mst_mgr, mst_pbn);
|
||||
|
||||
slots = drm_dp_atomic_find_vcpi_slots(state, &intel_dp->mst_mgr,
|
||||
connector->port, mst_pbn);
|
||||
if (slots < 0) {
|
||||
DRM_DEBUG_KMS("failed finding vcpi slots:%d\n", slots);
|
||||
return false;
|
||||
}
|
||||
|
||||
intel_link_compute_m_n(bpp, lane_count,
|
||||
adjusted_mode->crtc_clock,
|
||||
|
@ -80,7 +84,38 @@ static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
|
|||
pipe_config->dp_m_n.tu = slots;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static int intel_dp_mst_atomic_check(struct drm_connector *connector,
|
||||
struct drm_connector_state *new_conn_state)
|
||||
{
|
||||
struct drm_atomic_state *state = new_conn_state->state;
|
||||
struct drm_connector_state *old_conn_state;
|
||||
struct drm_crtc *old_crtc;
|
||||
struct drm_crtc_state *crtc_state;
|
||||
int slots, ret = 0;
|
||||
|
||||
old_conn_state = drm_atomic_get_old_connector_state(state, connector);
|
||||
old_crtc = old_conn_state->crtc;
|
||||
if (!old_crtc)
|
||||
return ret;
|
||||
|
||||
crtc_state = drm_atomic_get_new_crtc_state(state, old_crtc);
|
||||
slots = to_intel_crtc_state(crtc_state)->dp_m_n.tu;
|
||||
if (drm_atomic_crtc_needs_modeset(crtc_state) && slots > 0) {
|
||||
struct drm_dp_mst_topology_mgr *mgr;
|
||||
struct drm_encoder *old_encoder;
|
||||
|
||||
old_encoder = old_conn_state->best_encoder;
|
||||
mgr = &enc_to_mst(old_encoder)->primary->dp.mst_mgr;
|
||||
|
||||
ret = drm_dp_atomic_release_vcpi_slots(state, mgr, slots);
|
||||
if (ret)
|
||||
DRM_DEBUG_KMS("failed releasing %d vcpi slots:%d\n", slots, ret);
|
||||
else
|
||||
to_intel_crtc_state(crtc_state)->dp_m_n.tu = 0;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void intel_mst_disable_dp(struct intel_encoder *encoder,
|
||||
|
@ -387,6 +422,7 @@ static const struct drm_connector_helper_funcs intel_dp_mst_connector_helper_fun
|
|||
.mode_valid = intel_dp_mst_mode_valid,
|
||||
.atomic_best_encoder = intel_mst_atomic_best_encoder,
|
||||
.best_encoder = intel_mst_best_encoder,
|
||||
.atomic_check = intel_dp_mst_atomic_check,
|
||||
};
|
||||
|
||||
static void intel_dp_mst_encoder_destroy(struct drm_encoder *encoder)
|
||||
|
|
Loading…
Reference in a new issue