Lines Matching +full:aux +full:- +full:bus
34 MODULE_PARM_DESC(mst, "Enable DisplayPort multi-stream (default: enabled)");
42 return drm_dp_read_sink_count_cap(connector, outp->dp.dpcd, &outp->dp.desc); in nouveau_dp_has_sink_count()
51 ret = nvif_outp_dp_aux_xfer(&outp->outp, DP_AUX_NATIVE_READ, &size, in nouveau_dp_probe_lttpr()
64 struct drm_connector *connector = &nv_connector->base; in nouveau_dp_probe_dpcd()
65 struct drm_dp_aux *aux = &nv_connector->aux; in nouveau_dp_probe_dpcd() local
69 u8 *dpcd = outp->dp.dpcd; in nouveau_dp_probe_dpcd()
71 outp->dp.lttpr.nr = 0; in nouveau_dp_probe_dpcd()
72 outp->dp.rate_nr = 0; in nouveau_dp_probe_dpcd()
73 outp->dp.link_nr = 0; in nouveau_dp_probe_dpcd()
74 outp->dp.link_bw = 0; in nouveau_dp_probe_dpcd()
76 if (connector->connector_type != DRM_MODE_CONNECTOR_eDP && in nouveau_dp_probe_dpcd()
78 !drm_dp_read_dpcd_caps(aux, dpcd) && in nouveau_dp_probe_dpcd()
79 !drm_dp_read_lttpr_common_caps(aux, dpcd, outp->dp.lttpr.caps)) { in nouveau_dp_probe_dpcd()
80 int nr = drm_dp_lttpr_count(outp->dp.lttpr.caps); in nouveau_dp_probe_dpcd()
82 if (!drm_dp_lttpr_init(aux, nr)) in nouveau_dp_probe_dpcd()
83 outp->dp.lttpr.nr = nr; in nouveau_dp_probe_dpcd()
86 ret = drm_dp_read_dpcd_caps(aux, dpcd); in nouveau_dp_probe_dpcd()
90 outp->dp.link_nr = dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK; in nouveau_dp_probe_dpcd()
91 if (outp->dcb->dpconf.link_nr < outp->dp.link_nr) in nouveau_dp_probe_dpcd()
92 outp->dp.link_nr = outp->dcb->dpconf.link_nr; in nouveau_dp_probe_dpcd()
94 if (outp->dp.lttpr.nr) { in nouveau_dp_probe_dpcd()
95 int links = drm_dp_lttpr_max_lane_count(outp->dp.lttpr.caps); in nouveau_dp_probe_dpcd()
97 if (links && links < outp->dp.link_nr) in nouveau_dp_probe_dpcd()
98 outp->dp.link_nr = links; in nouveau_dp_probe_dpcd()
101 if (connector->connector_type == DRM_MODE_CONNECTOR_eDP && dpcd[DP_DPCD_REV] >= 0x13) { in nouveau_dp_probe_dpcd()
104 ret = drm_dp_dpcd_read(aux, DP_SUPPORTED_LINK_RATES, rates, sizeof(rates)); in nouveau_dp_probe_dpcd()
113 for (j = 0; j < outp->dp.rate_nr; j++) { in nouveau_dp_probe_dpcd()
114 if (rate > outp->dp.rate[j].rate) { in nouveau_dp_probe_dpcd()
115 for (int k = outp->dp.rate_nr; k > j; k--) in nouveau_dp_probe_dpcd()
116 outp->dp.rate[k] = outp->dp.rate[k - 1]; in nouveau_dp_probe_dpcd()
121 outp->dp.rate[j].dpcd = i; in nouveau_dp_probe_dpcd()
122 outp->dp.rate[j].rate = rate; in nouveau_dp_probe_dpcd()
123 outp->dp.rate_nr++; in nouveau_dp_probe_dpcd()
128 if (!outp->dp.rate_nr) { in nouveau_dp_probe_dpcd()
132 if (outp->dp.lttpr.nr) { in nouveau_dp_probe_dpcd()
133 int rate = drm_dp_lttpr_max_link_rate(outp->dp.lttpr.caps); in nouveau_dp_probe_dpcd()
139 max_rate = min_t(int, max_rate, outp->dcb->dpconf.link_bw); in nouveau_dp_probe_dpcd()
143 outp->dp.rate[outp->dp.rate_nr].dpcd = -1; in nouveau_dp_probe_dpcd()
144 outp->dp.rate[outp->dp.rate_nr].rate = rates[i]; in nouveau_dp_probe_dpcd()
145 outp->dp.rate_nr++; in nouveau_dp_probe_dpcd()
149 if (WARN_ON(!outp->dp.rate_nr)) in nouveau_dp_probe_dpcd()
153 ret = nvif_outp_dp_rates(&outp->outp, outp->dp.rate, outp->dp.rate_nr); in nouveau_dp_probe_dpcd()
157 for (int i = 0; i < outp->dp.rate_nr; i++) { in nouveau_dp_probe_dpcd()
158 u32 link_bw = outp->dp.rate[i].rate; in nouveau_dp_probe_dpcd()
160 if (link_bw > outp->dp.link_bw) in nouveau_dp_probe_dpcd()
161 outp->dp.link_bw = link_bw; in nouveau_dp_probe_dpcd()
164 ret = drm_dp_read_desc(aux, &outp->dp.desc, drm_dp_is_branch(dpcd)); in nouveau_dp_probe_dpcd()
169 mstm = outp->dp.mstm; in nouveau_dp_probe_dpcd()
171 mstm->can_mst = drm_dp_read_mst_cap(aux, dpcd) == DRM_DP_MST; in nouveau_dp_probe_dpcd()
175 ret = drm_dp_read_sink_count(aux); in nouveau_dp_probe_dpcd()
179 outp->dp.sink_count = ret; in nouveau_dp_probe_dpcd()
185 if (!outp->dp.sink_count) in nouveau_dp_probe_dpcd()
189 ret = drm_dp_read_downstream_info(aux, dpcd, in nouveau_dp_probe_dpcd()
190 outp->dp.downstream_ports); in nouveau_dp_probe_dpcd()
198 outp->dp.sink_count = 0; in nouveau_dp_probe_dpcd()
207 struct drm_device *dev = nv_encoder->base.base.dev; in nouveau_dp_detect()
209 struct drm_connector *connector = &nv_connector->base; in nouveau_dp_detect()
210 struct nv50_mstm *mstm = nv_encoder->dp.mstm; in nouveau_dp_detect()
212 u8 *dpcd = nv_encoder->dp.dpcd; in nouveau_dp_detect()
215 /* eDP ports don't support hotplugging - so there's no point in probing eDP ports unless we in nouveau_dp_detect()
218 if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) { in nouveau_dp_detect()
219 if (connector->status == connector_status_connected) in nouveau_dp_detect()
221 else if (connector->status == connector_status_disconnected) in nouveau_dp_detect()
225 // Ensure that the aux bus is enabled for probing in nouveau_dp_detect()
226 drm_dp_dpcd_set_powered(&nv_connector->aux, true); in nouveau_dp_detect()
228 mutex_lock(&nv_encoder->dp.hpd_irq_lock); in nouveau_dp_detect()
234 if (mstm->suspended) { in nouveau_dp_detect()
235 if (mstm->is_mst) in nouveau_dp_detect()
237 else if (connector->status == in nouveau_dp_detect()
245 hpd = nvif_outp_detect(&nv_encoder->outp); in nouveau_dp_detect()
247 nvif_outp_dp_aux_pwr(&nv_encoder->outp, false); in nouveau_dp_detect()
250 nvif_outp_dp_aux_pwr(&nv_encoder->outp, true); in nouveau_dp_detect()
254 nvif_outp_dp_aux_pwr(&nv_encoder->outp, false); in nouveau_dp_detect()
259 if (mstm && mstm->can_mst && mstm->is_mst) { in nouveau_dp_detect()
265 for (int i = 0; i < nv_encoder->dp.rate_nr; i++) in nouveau_dp_detect()
266 NV_DEBUG(drm, "sink rate %d: %d\n", i, nv_encoder->dp.rate[i].rate); in nouveau_dp_detect()
268 NV_DEBUG(drm, "encoder: %dx%d\n", nv_encoder->dcb->dpconf.link_nr, in nouveau_dp_detect()
269 nv_encoder->dcb->dpconf.link_bw); in nouveau_dp_detect()
270 NV_DEBUG(drm, "maximum: %dx%d\n", nv_encoder->dp.link_nr, in nouveau_dp_detect()
271 nv_encoder->dp.link_bw); in nouveau_dp_detect()
273 if (mstm && mstm->can_mst) { in nouveau_dp_detect()
279 nvif_outp_dp_aux_pwr(&nv_encoder->outp, false); in nouveau_dp_detect()
286 if (mstm && !mstm->suspended && ret != NOUVEAU_DP_MST) in nouveau_dp_detect()
289 /* GSP doesn't like when we try to do aux transactions on a port it considers disconnected, in nouveau_dp_detect()
290 * and since we don't really have a usecase for that anyway - just disable the aux bus here in nouveau_dp_detect()
294 drm_dp_dpcd_set_powered(&nv_connector->aux, false); in nouveau_dp_detect()
296 mutex_unlock(&nv_encoder->dp.hpd_irq_lock); in nouveau_dp_detect()
303 struct drm_dp_aux *aux = &outp->conn->aux; in nouveau_dp_power_down() local
307 mutex_lock(&outp->dp.hpd_irq_lock); in nouveau_dp_power_down()
309 ret = drm_dp_dpcd_readb(aux, DP_SET_POWER, &pwr); in nouveau_dp_power_down()
313 drm_dp_dpcd_writeb(aux, DP_SET_POWER, pwr); in nouveau_dp_power_down()
316 outp->dp.lt.nr = 0; in nouveau_dp_power_down()
317 mutex_unlock(&outp->dp.hpd_irq_lock); in nouveau_dp_power_down()
323 struct drm_dp_aux *aux = &outp->conn->aux; in nouveau_dp_train_link() local
327 if ( (outp->dp.dpcd[DP_MAX_LANE_COUNT] & 0x20) && in nouveau_dp_train_link()
328 !(outp->dp.dpcd[DP_MAX_DOWNSPREAD] & DP_TPS4_SUPPORTED)) in nouveau_dp_train_link()
332 ret = nvif_outp_dp_train(&outp->outp, outp->dp.dpcd, in nouveau_dp_train_link()
333 outp->dp.lttpr.nr, in nouveau_dp_train_link()
334 outp->dp.lt.nr, in nouveau_dp_train_link()
335 outp->dp.lt.bw, in nouveau_dp_train_link()
336 outp->dp.lt.mst, in nouveau_dp_train_link()
347 ret = drm_dp_dpcd_read_phy_link_status(aux, DP_PHY_DPRX, stat); in nouveau_dp_train_link()
352 if (!drm_dp_channel_eq_ok(stat, outp->dp.lt.nr)) { in nouveau_dp_train_link()
364 ret = drm_dp_dpcd_read_phy_link_status(aux, DP_PHY_DPRX, stat); in nouveau_dp_train_link()
377 for (int i = 0; i < outp->dp.lt.nr; i++) { in nouveau_dp_train_link()
384 ret = nvif_outp_dp_drive(&outp->outp, outp->dp.lt.nr, pe, vs); in nouveau_dp_train_link()
392 if (drm_dp_dpcd_readb(aux, DP_LANE_COUNT_SET, &tmp) == 1) { in nouveau_dp_train_link()
394 drm_dp_dpcd_writeb(aux, DP_LANE_COUNT_SET, tmp); in nouveau_dp_train_link()
407 struct nouveau_drm *drm = nouveau_drm(outp->base.base.dev); in nouveau_dp_train()
408 struct drm_dp_aux *aux = &outp->conn->aux; in nouveau_dp_train() local
414 min_rate = outp->dp.link_nr * outp->dp.rate[0].rate; in nouveau_dp_train()
419 outp->base.base.name, mst, min_rate); in nouveau_dp_train()
421 mutex_lock(&outp->dp.hpd_irq_lock); in nouveau_dp_train()
423 if (drm_dp_dpcd_readb(aux, DP_SET_POWER, &pwr) == 1) { in nouveau_dp_train()
427 drm_dp_dpcd_writeb(aux, DP_SET_POWER, pwr); in nouveau_dp_train()
431 for (int nr = outp->dp.link_nr; nr; nr >>= 1) { in nouveau_dp_train()
432 for (int rate = 0; rate < outp->dp.rate_nr; rate++) { in nouveau_dp_train()
433 if (outp->dp.rate[rate].rate * nr >= min_rate) { in nouveau_dp_train()
434 outp->dp.lt.nr = nr; in nouveau_dp_train()
435 outp->dp.lt.bw = outp->dp.rate[rate].rate; in nouveau_dp_train()
436 outp->dp.lt.mst = mst; in nouveau_dp_train()
445 mutex_unlock(&outp->dp.hpd_irq_lock); in nouveau_dp_train()
454 if (!outp || !outp->dp.lt.nr) in nouveau_dp_link_check_locked()
457 if (drm_dp_dpcd_read_phy_link_status(&outp->conn->aux, DP_PHY_DPRX, link_status) < 0) in nouveau_dp_link_check_locked()
460 if (drm_dp_channel_eq_ok(link_status, outp->dp.lt.nr)) in nouveau_dp_link_check_locked()
469 struct nouveau_encoder *outp = nv_connector->dp_encoder; in nouveau_dp_link_check()
473 mutex_lock(&outp->dp.hpd_irq_lock); in nouveau_dp_link_check()
474 if (outp->dp.lt.nr) in nouveau_dp_link_check()
476 mutex_unlock(&outp->dp.hpd_irq_lock); in nouveau_dp_link_check()
487 struct drm_connector *connector = &nv_connector->base; in nouveau_dp_irq()
489 struct nouveau_drm *drm = nouveau_drm(outp->base.base.dev); in nouveau_dp_irq()
497 mstm = outp->dp.mstm; in nouveau_dp_irq()
498 NV_DEBUG(drm, "service %s\n", connector->name); in nouveau_dp_irq()
500 mutex_lock(&outp->dp.hpd_irq_lock); in nouveau_dp_irq()
502 if (mstm && mstm->is_mst) { in nouveau_dp_irq()
506 drm_dp_cec_irq(&nv_connector->aux); in nouveau_dp_irq()
509 ret = drm_dp_read_sink_count(&nv_connector->aux); in nouveau_dp_irq()
510 if (ret != outp->dp.sink_count) in nouveau_dp_irq()
513 outp->dp.sink_count = ret; in nouveau_dp_irq()
517 mutex_unlock(&outp->dp.hpd_irq_lock); in nouveau_dp_irq()
523 * - Validate against the DP caps advertised by the GPU (we don't check these
532 unsigned int max_rate, mode_rate, ds_max_dotclock, clock = mode->clock; in nv50_dp_mode_valid()
539 if (mode->flags & DRM_MODE_FLAG_INTERLACE && !outp->caps.dp_interlace) in nv50_dp_mode_valid()
542 if ((mode->flags & DRM_MODE_FLAG_3D_MASK) == DRM_MODE_FLAG_3D_FRAME_PACKING) in nv50_dp_mode_valid()
545 max_rate = outp->dp.link_nr * outp->dp.link_bw; in nv50_dp_mode_valid()
550 ds_max_dotclock = drm_dp_downstream_max_dotclock(outp->dp.dpcd, outp->dp.downstream_ports); in nv50_dp_mode_valid()