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drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw()

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Since this is one of the few functions in drm_dp_mst_topology.c that
doesn't have any way of getting access to a drm_device, let's pass the
drm_dp_mst_topology_mgr down to this function so that it can use
drm_dbg_kms().

Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210423184309.207645-14-lyude@redhat.com
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Lyude Paul 2021-04-23 14:43:05 -04:00
parent 318fbd7dfe
commit c869c5f8ce
3 changed files with 9 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/gpu/drm/drm_dp_mst_topology.c
View file

@ -3638,6 +3638,7 @@ static int drm_dp_send_up_ack_reply(struct drm_dp_mst_topology_mgr *mgr,
/**
* drm_dp_get_vc_payload_bw - get the VC payload BW for an MST link
* @mgr: The &drm_dp_mst_topology_mgr to use
* @link_rate: link rate in 10kbits/s units
* @link_lane_count: lane count
*
@ -3646,7 +3647,8 @@ static int drm_dp_send_up_ack_reply(struct drm_dp_mst_topology_mgr *mgr,
* convert the number of PBNs required for a given stream to the number of
* timeslots this stream requires in each MTP.
*/
int drm_dp_get_vc_payload_bw(int link_rate, int link_lane_count)
int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr,
int link_rate, int link_lane_count)
{
if (link_rate == 0 || link_lane_count == 0)
DRM_DEBUG_KMS("invalid link rate/lane count: (%d / %d)\n",
@ -3711,7 +3713,8 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms
goto out_unlock;
}
mgr->pbn_div = drm_dp_get_vc_payload_bw(drm_dp_bw_code_to_link_rate(mgr->dpcd[1]),
mgr->pbn_div = drm_dp_get_vc_payload_bw(mgr,
drm_dp_bw_code_to_link_rate(mgr->dpcd[1]),
mgr->dpcd[2] & DP_MAX_LANE_COUNT_MASK);
if (mgr->pbn_div == 0) {
ret = -EINVAL;

3
drivers/gpu/drm/i915/display/intel_dp_mst.c
View file

@ -70,7 +70,8 @@ static int intel_dp_mst_compute_link_config(struct intel_encoder *encoder,
slots = drm_dp_atomic_find_vcpi_slots(state, &intel_dp->mst_mgr,
connector->port,
crtc_state->pbn,
drm_dp_get_vc_payload_bw(crtc_state->port_clock,
drm_dp_get_vc_payload_bw(&intel_dp->mst_mgr,
crtc_state->port_clock,
crtc_state->lane_count));
if (slots == -EDEADLK)
return slots;

3
include/drm/drm_dp_mst_helper.h
View file

@ -783,7 +783,8 @@ drm_dp_mst_detect_port(struct drm_connector *connector,
struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port);
int drm_dp_get_vc_payload_bw(int link_rate, int link_lane_count);
int drm_dp_get_vc_payload_bw(const struct drm_dp_mst_topology_mgr *mgr,
int link_rate, int link_lane_count);
int drm_dp_calc_pbn_mode(int clock, int bpp, bool dsc);