[PATCH v3 32/44] drm/nouveau/disp: add dp train method

From: Lyude Paul
Date: Tue Sep 19 2023 - 18:09:23 EST

From: Ben Skeggs <bskeggs@xxxxxxxxxx>

- passes DPCD information from DRM to NVKM
- removes NVKM's own sink caps handling
- link still trained from supervisor, more patches to come

Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Reviewed-by: Lyude Paul <lyude@xxxxxxxxxx>
Acked-by: Danilo Krummrich <me@xxxxxxxx>
Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
---
drivers/gpu/drm/nouveau/dispnv50/disp.c | 6 +-
drivers/gpu/drm/nouveau/include/nvif/if0012.h | 25 ++--
drivers/gpu/drm/nouveau/include/nvif/outp.h | 7 +-
drivers/gpu/drm/nouveau/nouveau_dp.c | 75 +++++++++--
drivers/gpu/drm/nouveau/nouveau_encoder.h | 7 ++
drivers/gpu/drm/nouveau/nvif/outp.c | 38 +++---
drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c | 118 +++---------------
.../gpu/drm/nouveau/nvkm/engine/disp/outp.h | 2 +
.../gpu/drm/nouveau/nvkm/engine/disp/uoutp.c | 41 +++---
9 files changed, 143 insertions(+), 176 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 1ea4b113058cd..d8ed23ddd2e4c 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -1038,7 +1038,7 @@ nv50_msto_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *st

if (!mstm->links++) {
nvif_outp_acquire_sor(&mstm->outp->outp, false /*TODO: MST audio... */);
- nvif_outp_acquire_dp(&mstm->outp->outp, mstm->outp->dp.dpcd, 0, 0, false, true);
+ nouveau_dp_train(mstm->outp, true, 0, 0);
}

if (mstm->outp->outp.or.link & 1)
@@ -1661,7 +1661,7 @@ nv50_sor_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *sta
nvif_outp_lvds(&nv_encoder->outp, lvds_dual, lvds_8bpc);
break;
case DCB_OUTPUT_DP:
- nvif_outp_acquire_dp(&nv_encoder->outp, nv_encoder->dp.dpcd, 0, 0, hda, false);
+ nouveau_dp_train(nv_encoder, false, mode->clock, asyh->or.bpc);
depth = nv50_dp_bpc_to_depth(asyh->or.bpc);

if (nv_encoder->outp.or.link & 1)
@@ -1852,7 +1852,7 @@ nv50_pior_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *st
break;
case DCB_OUTPUT_DP:
ctrl |= NVDEF(NV507D, PIOR_SET_CONTROL, PROTOCOL, EXT_TMDS_ENC);
- nvif_outp_acquire_dp(&nv_encoder->outp, nv_encoder->dp.dpcd, 0, 0, false, false);
+ nouveau_dp_train(nv_encoder, false, asyh->state.adjusted_mode.clock, 6);
break;
default:
BUG();
diff --git a/drivers/gpu/drm/nouveau/include/nvif/if0012.h b/drivers/gpu/drm/nouveau/include/nvif/if0012.h
index ddc8e3d858235..14972b942be7e 100644
--- a/drivers/gpu/drm/nouveau/include/nvif/if0012.h
+++ b/drivers/gpu/drm/nouveau/include/nvif/if0012.h
@@ -34,7 +34,7 @@ union nvif_outp_args {
#define NVIF_OUTP_V0_DP_AUX_PWR 0x70
#define NVIF_OUTP_V0_DP_AUX_XFER 0x71
#define NVIF_OUTP_V0_DP_RATES 0x72
-#define NVIF_OUTP_V0_DP_RETRAIN 0x73
+#define NVIF_OUTP_V0_DP_TRAIN 0x73
#define NVIF_OUTP_V0_DP_MST_VCPI 0x78

union nvif_outp_detect_args {
@@ -71,7 +71,6 @@ union nvif_outp_acquire_args {
#define NVIF_OUTP_ACQUIRE_V0_DAC 0x00
#define NVIF_OUTP_ACQUIRE_V0_SOR 0x01
#define NVIF_OUTP_ACQUIRE_V0_PIOR 0x02
-#define NVIF_OUTP_ACQUIRE_V0_DP 0x04
__u8 type;
__u8 or;
__u8 link;
@@ -80,14 +79,6 @@ union nvif_outp_acquire_args {
struct {
__u8 hda;
} sor;
- struct {
- __u8 link_nr; /* 0 = highest possible. */
- __u8 link_bw; /* 0 = highest possible, DP BW code otherwise. */
- __u8 hda;
- __u8 mst;
- __u8 pad04[4];
- __u8 dpcd[DP_RECEIVER_CAP_SIZE];
- } dp;
};
} v0;
};
@@ -207,9 +198,17 @@ union nvif_outp_dp_rates_args {
} v0;
};

-union nvif_outp_dp_retrain_args {
- struct nvif_outp_dp_retrain_vn {
- } vn;
+union nvif_outp_dp_train_args {
+ struct nvif_outp_dp_train_v0 {
+ __u8 version;
+ __u8 retrain;
+ __u8 mst;
+ __u8 lttprs;
+ __u8 post_lt_adj;
+ __u8 link_nr;
+ __u32 link_bw;
+ __u8 dpcd[DP_RECEIVER_CAP_SIZE];
+ } v0;
};

union nvif_outp_dp_mst_vcpi_args {
diff --git a/drivers/gpu/drm/nouveau/include/nvif/outp.h b/drivers/gpu/drm/nouveau/include/nvif/outp.h
index 596d543acd302..9a78483e0289d 100644
--- a/drivers/gpu/drm/nouveau/include/nvif/outp.h
+++ b/drivers/gpu/drm/nouveau/include/nvif/outp.h
@@ -31,8 +31,6 @@ int nvif_outp_load_detect(struct nvif_outp *, u32 loadval);
int nvif_outp_acquire_dac(struct nvif_outp *);
int nvif_outp_acquire_sor(struct nvif_outp *, bool hda);
int nvif_outp_acquire_pior(struct nvif_outp *);
-int nvif_outp_acquire_dp(struct nvif_outp *outp, u8 dpcd[DP_RECEIVER_CAP_SIZE],
- int link_nr, int link_bw, bool hda, bool mst);
int nvif_outp_inherit_rgb_crt(struct nvif_outp *outp, u8 *proto_out);
int nvif_outp_inherit_lvds(struct nvif_outp *outp, u8 *proto_out);
int nvif_outp_inherit_tmds(struct nvif_outp *outp, u8 *proto_out);
@@ -66,8 +64,9 @@ struct nvif_outp_dp_rate {
};

int nvif_outp_dp_rates(struct nvif_outp *, struct nvif_outp_dp_rate *rate, int rate_nr);
-
-int nvif_outp_dp_retrain(struct nvif_outp *);
+int nvif_outp_dp_train(struct nvif_outp *, u8 dpcd[DP_RECEIVER_CAP_SIZE],
+ u8 lttprs, u8 link_nr, u32 link_bw, bool mst, bool post_lt_adj,
+ bool retrain);
int nvif_outp_dp_mst_vcpi(struct nvif_outp *, int head,
u8 start_slot, u8 num_slots, u16 pbn, u16 aligned_pbn);
#endif
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c
index 1c0b992fe2416..9280daf325341 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dp.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dp.c
@@ -79,8 +79,21 @@ nouveau_dp_probe_dpcd(struct nouveau_connector *nv_connector,
!drm_dp_read_lttpr_common_caps(aux, dpcd, outp->dp.lttpr.caps)) {
int nr = drm_dp_lttpr_count(outp->dp.lttpr.caps);

- if (nr > 0)
- outp->dp.lttpr.nr = nr;
+ if (nr) {
+ drm_dp_dpcd_writeb(aux, DP_PHY_REPEATER_MODE,
+ DP_PHY_REPEATER_MODE_TRANSPARENT);
+
+ if (nr > 0) {
+ ret = drm_dp_dpcd_writeb(aux, DP_PHY_REPEATER_MODE,
+ DP_PHY_REPEATER_MODE_NON_TRANSPARENT);
+ if (ret != 1) {
+ drm_dp_dpcd_writeb(aux, DP_PHY_REPEATER_MODE,
+ DP_PHY_REPEATER_MODE_TRANSPARENT);
+ } else {
+ outp->dp.lttpr.nr = nr;
+ }
+ }
+ }
}

ret = drm_dp_read_dpcd_caps(aux, dpcd);
@@ -291,23 +304,71 @@ nouveau_dp_power_down(struct nouveau_encoder *outp)
int ret;
u8 pwr;

+ mutex_lock(&outp->dp.hpd_irq_lock);
+
ret = drm_dp_dpcd_readb(aux, DP_SET_POWER, &pwr);
if (ret == 1) {
pwr &= ~DP_SET_POWER_MASK;
pwr |= DP_SET_POWER_D3;
drm_dp_dpcd_writeb(aux, DP_SET_POWER, pwr);
}
+
+ outp->dp.lt.nr = 0;
+ mutex_unlock(&outp->dp.hpd_irq_lock);
+}
+
+static bool
+nouveau_dp_train_link(struct nouveau_encoder *outp, bool retrain)
+{
+ int ret;
+
+ ret = nvif_outp_dp_train(&outp->outp, outp->dp.dpcd,
+ outp->dp.lttpr.nr,
+ outp->dp.lt.nr,
+ outp->dp.lt.bw,
+ outp->dp.lt.mst,
+ false,
+ retrain);
+
+ return ret == 0;
}

bool
-nouveau_dp_link_check(struct nouveau_connector *nv_connector)
+nouveau_dp_train(struct nouveau_encoder *outp, bool mst, u32 khz, u8 bpc)
{
- struct nouveau_encoder *nv_encoder = find_encoder(&nv_connector->base, DCB_OUTPUT_DP);
+ bool ret;

- if (!nv_encoder || nv_encoder->outp.or.id < 0)
- return true;
+ mutex_lock(&outp->dp.hpd_irq_lock);
+
+ outp->dp.lt.nr = outp->dp.link_nr;
+ outp->dp.lt.bw = 0;
+ outp->dp.lt.mst = mst;
+ ret = nouveau_dp_train_link(outp, false);
+
+ mutex_unlock(&outp->dp.hpd_irq_lock);
+ return ret;
+}
+
+static bool
+nouveau_dp_link_check_locked(struct nouveau_encoder *outp)
+{
+ return nouveau_dp_train_link(outp, true);
+}
+
+bool
+nouveau_dp_link_check(struct nouveau_connector *nv_connector)
+{
+ struct nouveau_encoder *outp = nv_connector->dp_encoder;
+ bool link_ok = true;
+
+ if (outp) {
+ mutex_lock(&outp->dp.hpd_irq_lock);
+ if (outp->dp.lt.nr)
+ link_ok = nouveau_dp_link_check_locked(outp);
+ mutex_unlock(&outp->dp.hpd_irq_lock);
+ }

- return nvif_outp_dp_retrain(&nv_encoder->outp) == 0;
+ return link_ok;
}

void
diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h b/drivers/gpu/drm/nouveau/nouveau_encoder.h
index ed31db58176c3..333042fc493fa 100644
--- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
+++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
@@ -89,6 +89,12 @@ struct nouveau_encoder {
int link_nr;
int link_bw;

+ struct {
+ bool mst;
+ u8 nr;
+ u32 bw;
+ } lt;
+
/* Protects DP state that needs to be accessed outside
* connector reprobing contexts
*/
@@ -155,6 +161,7 @@ enum nouveau_dp_status {
};

int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
+bool nouveau_dp_train(struct nouveau_encoder *, bool mst, u32 khz, u8 bpc);
void nouveau_dp_power_down(struct nouveau_encoder *);
bool nouveau_dp_link_check(struct nouveau_connector *);
void nouveau_dp_irq(struct work_struct *);
diff --git a/drivers/gpu/drm/nouveau/nvif/outp.c b/drivers/gpu/drm/nouveau/nvif/outp.c
index 050d5cd303ad4..7ffd57d82f89f 100644
--- a/drivers/gpu/drm/nouveau/nvif/outp.c
+++ b/drivers/gpu/drm/nouveau/nvif/outp.c
@@ -47,32 +47,26 @@ nvif_outp_dp_mst_vcpi(struct nvif_outp *outp, int head,
}

int
-nvif_outp_dp_retrain(struct nvif_outp *outp)
+nvif_outp_dp_train(struct nvif_outp *outp, u8 dpcd[DP_RECEIVER_CAP_SIZE], u8 lttprs,
+ u8 link_nr, u32 link_bw, bool mst, bool post_lt_adj, bool retrain)
{
- int ret = nvif_object_mthd(&outp->object, NVIF_OUTP_V0_DP_RETRAIN, NULL, 0);
- NVIF_ERRON(ret, &outp->object, "[DP_RETRAIN]");
- return ret;
-}
-
-static inline int nvif_outp_acquire(struct nvif_outp *, u8, struct nvif_outp_acquire_v0 *);
-
-int
-nvif_outp_acquire_dp(struct nvif_outp *outp, u8 dpcd[DP_RECEIVER_CAP_SIZE],
- int link_nr, int link_bw, bool hda, bool mst)
-{
- struct nvif_outp_acquire_v0 args;
+ struct nvif_outp_dp_train_v0 args;
int ret;

- args.dp.link_nr = link_nr;
- args.dp.link_bw = link_bw;
- args.dp.hda = hda;
- args.dp.mst = mst;
- memcpy(args.dp.dpcd, dpcd, sizeof(args.dp.dpcd));
-
- ret = nvif_outp_acquire(outp, NVIF_OUTP_ACQUIRE_V0_DP, &args);
+ args.version = 0;
+ args.retrain = retrain;
+ args.mst = mst;
+ args.lttprs = lttprs;
+ args.post_lt_adj = post_lt_adj;
+ args.link_nr = link_nr;
+ args.link_bw = link_bw;
+ memcpy(args.dpcd, dpcd, sizeof(args.dpcd));
+
+ ret = nvif_object_mthd(&outp->object, NVIF_OUTP_V0_DP_TRAIN, &args, sizeof(args));
NVIF_ERRON(ret, &outp->object,
- "[ACQUIRE proto:DP link_nr:%d link_bw:%02x hda:%d mst:%d] or:%d link:%d",
- args.dp.link_nr, args.dp.link_bw, args.dp.hda, args.dp.mst, args.or, args.link);
+ "[DP_TRAIN retrain:%d mst:%d lttprs:%d post_lt_adj:%d nr:%d bw:%d]",
+ args.retrain, args.mst, args.lttprs, args.post_lt_adj, args.link_nr,
+ args.link_bw);
return ret;
}

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c
index af0f81a2834b6..b59cd2d4550f5 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c
@@ -303,26 +303,13 @@ nvkm_dp_train_link(struct nvkm_outp *outp, int rate)
struct lt_state lt = {
.outp = outp,
.pc2 = outp->dp.dpcd[DPCD_RC02] & DPCD_RC02_TPS3_SUPPORTED,
+ .repeaters = outp->dp.lttprs,
};
- u8 sink[2], data;
+ u8 sink[2];
int ret;

OUTP_DBG(outp, "training %dx%02x", ior->dp.nr, ior->dp.bw);

- /* Select LTTPR non-transparent mode if we have a valid configuration,
- * use transparent mode otherwise.
- */
- if (outp->dp.lttpr[0] >= 0x14) {
- data = DPCD_LTTPR_MODE_TRANSPARENT;
- nvkm_wraux(outp->dp.aux, DPCD_LTTPR_MODE, &data, sizeof(data));
-
- if (outp->dp.lttprs) {
- data = DPCD_LTTPR_MODE_NON_TRANSPARENT;
- nvkm_wraux(outp->dp.aux, DPCD_LTTPR_MODE, &data, sizeof(data));
- lt.repeaters = outp->dp.lttprs;
- }
- }
-
/* Set desired link configuration on the sink. */
sink[0] = (outp->dp.rate[rate].dpcd < 0) ? ior->dp.bw : 0;
sink[1] = ior->dp.nr;
@@ -467,6 +454,19 @@ nvkm_dp_train_init(struct nvkm_outp *outp)
}
}

+static int
+nvkm_dp_train_(struct nvkm_outp *outp, bool retrain)
+{
+ if (retrain) {
+ if (!atomic_read(&outp->dp.lt.done))
+ return 0;
+
+ return outp->func->acquire(outp);
+ }
+
+ return 0;
+}
+
static int
nvkm_dp_train(struct nvkm_outp *outp, u32 dataKBps)
{
@@ -501,19 +501,6 @@ nvkm_dp_train(struct nvkm_outp *outp, u32 dataKBps)
OUTP_DBG(outp, "training");
nvkm_dp_train_init(outp);

- /* Validate and train at configuration requested (if any) on ACQUIRE. */
- if (outp->dp.lt.nr) {
- for (nr = outp->dp.links; ret < 0 && nr; nr >>= 1) {
- for (rate = 0; nr == outp->dp.lt.nr && rate < outp->dp.rates; rate++) {
- if (outp->dp.rate[rate].rate / 27000 == outp->dp.lt.bw) {
- ior->dp.bw = outp->dp.rate[rate].rate / 27000;
- ior->dp.nr = nr;
- ret = nvkm_dp_train_links(outp, rate);
- }
- }
- }
- }
-
/* Otherwise, loop through all valid link configurations that support the data rate. */
for (nr = outp->dp.links; ret < 0 && nr; nr >>= 1) {
for (rate = 0; ret < 0 && rate < outp->dp.rates; rate++) {
@@ -615,50 +602,6 @@ nvkm_dp_acquire(struct nvkm_outp *outp)
return ret;
}

-/* XXX: This is a big fat hack, and this is just drm_dp_read_dpcd_caps()
- * converted to work inside nvkm. This is a temporary holdover until we start
- * passing the drm_dp_aux device through NVKM
- */
-static int
-nvkm_dp_read_dpcd_caps(struct nvkm_outp *outp)
-{
- struct nvkm_i2c_aux *aux = outp->dp.aux;
- u8 dpcd_ext[DP_RECEIVER_CAP_SIZE];
- int ret;
-
- ret = nvkm_rdaux(aux, DPCD_RC00_DPCD_REV, outp->dp.dpcd, DP_RECEIVER_CAP_SIZE);
- if (ret < 0)
- return ret;
-
- /*
- * Prior to DP1.3 the bit represented by
- * DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT was reserved.
- * If it is set DP_DPCD_REV at 0000h could be at a value less than
- * the true capability of the panel. The only way to check is to
- * then compare 0000h and 2200h.
- */
- if (!(outp->dp.dpcd[DP_TRAINING_AUX_RD_INTERVAL] &
- DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT))
- return 0;
-
- ret = nvkm_rdaux(aux, DP_DP13_DPCD_REV, dpcd_ext, sizeof(dpcd_ext));
- if (ret < 0)
- return ret;
-
- if (outp->dp.dpcd[DP_DPCD_REV] > dpcd_ext[DP_DPCD_REV]) {
- OUTP_DBG(outp, "Extended DPCD rev less than base DPCD rev (%d > %d)\n",
- outp->dp.dpcd[DP_DPCD_REV], dpcd_ext[DP_DPCD_REV]);
- return 0;
- }
-
- if (!memcmp(outp->dp.dpcd, dpcd_ext, sizeof(dpcd_ext)))
- return 0;
-
- memcpy(outp->dp.dpcd, dpcd_ext, sizeof(dpcd_ext));
-
- return 0;
-}
-
void
nvkm_dp_enable(struct nvkm_outp *outp, bool auxpwr)
{
@@ -690,36 +633,6 @@ nvkm_dp_enable(struct nvkm_outp *outp, bool auxpwr)
OUTP_DBG(outp, "aux power -> always");
nvkm_i2c_aux_monitor(aux, true);
outp->dp.aux_pwr = true;
-
- /* Detect any LTTPRs before reading DPCD receiver caps. */
- if (!nvkm_rdaux(aux, DPCD_LTTPR_REV, outp->dp.lttpr, sizeof(outp->dp.lttpr)) &&
- outp->dp.lttpr[0] >= 0x14 && outp->dp.lttpr[2]) {
- switch (outp->dp.lttpr[2]) {
- case 0x80: outp->dp.lttprs = 1; break;
- case 0x40: outp->dp.lttprs = 2; break;
- case 0x20: outp->dp.lttprs = 3; break;
- case 0x10: outp->dp.lttprs = 4; break;
- case 0x08: outp->dp.lttprs = 5; break;
- case 0x04: outp->dp.lttprs = 6; break;
- case 0x02: outp->dp.lttprs = 7; break;
- case 0x01: outp->dp.lttprs = 8; break;
- default:
- /* Unknown LTTPR count, we'll switch to transparent mode. */
- WARN_ON(1);
- outp->dp.lttprs = 0;
- break;
- }
- } else {
- /* No LTTPR support, or zero LTTPR count - don't touch it at all. */
- memset(outp->dp.lttpr, 0x00, sizeof(outp->dp.lttpr));
- }
-
- if (!nvkm_dp_read_dpcd_caps(outp)) {
- outp->dp.links = outp->dp.dpcd[DPCD_RC02] & DPCD_RC02_MAX_LANE_COUNT;
- outp->dp.links = min(outp->dp.links, outp->info.dpconf.link_nr);
- if (outp->dp.lttprs && outp->dp.lttpr[4])
- outp->dp.links = min_t(int, outp->dp.links, outp->dp.lttpr[4]);
- }
} else
if (!auxpwr && outp->dp.aux_pwr) {
OUTP_DBG(outp, "aux power -> demand");
@@ -771,6 +684,7 @@ nvkm_dp_func = {
.bl.set = nvkm_outp_bl_set,
.dp.aux_pwr = nvkm_dp_aux_pwr,
.dp.aux_xfer = nvkm_dp_aux_xfer,
+ .dp.train = nvkm_dp_train_,
};

int
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.h
index 5cef5933e7f25..5ac4cf596bc39 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.h
@@ -58,6 +58,7 @@ struct nvkm_outp {
u8 nr;
u8 bw;
bool mst;
+ bool post_adj;
} lt;
} dp;
};
@@ -109,6 +110,7 @@ struct nvkm_outp_func {
int (*aux_pwr)(struct nvkm_outp *, bool pu);
int (*aux_xfer)(struct nvkm_outp *, u8 type, u32 addr, u8 *data, u8 *size);
int (*rates)(struct nvkm_outp *);
+ int (*train)(struct nvkm_outp *, bool retrain);
} dp;
};

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
index fd756e4599dab..16a1536d13aaf 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
@@ -46,28 +46,26 @@ nvkm_uoutp_mthd_dp_mst_vcpi(struct nvkm_outp *outp, void *argv, u32 argc)
}

static int
-nvkm_uoutp_mthd_dp_retrain(struct nvkm_outp *outp, void *argv, u32 argc)
+nvkm_uoutp_mthd_dp_train(struct nvkm_outp *outp, void *argv, u32 argc)
{
- union nvif_outp_dp_retrain_args *args = argv;
+ union nvif_outp_dp_train_args *args = argv;

- if (argc != sizeof(args->vn))
+ if (argc != sizeof(args->v0) || args->v0.version != 0)
return -ENOSYS;
+ if (!outp->func->dp.train)
+ return -EINVAL;

- if (!atomic_read(&outp->dp.lt.done))
- return 0;
-
- return outp->func->acquire(outp);
-}
+ if (!args->v0.retrain) {
+ memcpy(outp->dp.dpcd, args->v0.dpcd, sizeof(outp->dp.dpcd));
+ outp->dp.lttprs = args->v0.lttprs;
+ outp->dp.links = args->v0.link_nr;
+ outp->dp.lt.nr = 0;
+ outp->dp.lt.bw = 0;
+ outp->dp.lt.mst = args->v0.mst;
+ outp->dp.lt.post_adj = args->v0.post_lt_adj;
+ }

-static int
-nvkm_uoutp_mthd_acquire_dp(struct nvkm_outp *outp, u8 dpcd[DP_RECEIVER_CAP_SIZE],
- u8 link_nr, u8 link_bw, bool hda, bool mst)
-{
- memcpy(outp->dp.dpcd, dpcd, sizeof(outp->dp.dpcd));
- outp->dp.lt.nr = link_nr;
- outp->dp.lt.bw = link_bw;
- outp->dp.lt.mst = mst;
- return 0;
+ return outp->func->dp.train(outp, args->v0.retrain);
}

static int
@@ -304,13 +302,6 @@ nvkm_uoutp_mthd_acquire(struct nvkm_outp *outp, void *argv, u32 argc)
case NVIF_OUTP_ACQUIRE_V0_SOR:
ret = nvkm_outp_acquire_or(outp, NVKM_OUTP_USER, args->v0.sor.hda);
break;
- case NVIF_OUTP_ACQUIRE_V0_DP:
- ret = nvkm_uoutp_mthd_acquire_dp(outp, args->v0.dp.dpcd,
- args->v0.dp.link_nr,
- args->v0.dp.link_bw,
- args->v0.dp.hda != 0,
- args->v0.dp.mst != 0);
- break;
default:
ret = -EINVAL;
break;
@@ -458,7 +449,7 @@ nvkm_uoutp_mthd_acquired(struct nvkm_outp *outp, u32 mthd, void *argv, u32 argc)
case NVIF_OUTP_V0_HDMI : return nvkm_uoutp_mthd_hdmi (outp, argv, argc);
case NVIF_OUTP_V0_INFOFRAME : return nvkm_uoutp_mthd_infoframe (outp, argv, argc);
case NVIF_OUTP_V0_HDA_ELD : return nvkm_uoutp_mthd_hda_eld (outp, argv, argc);
- case NVIF_OUTP_V0_DP_RETRAIN : return nvkm_uoutp_mthd_dp_retrain (outp, argv, argc);
+ case NVIF_OUTP_V0_DP_TRAIN : return nvkm_uoutp_mthd_dp_train (outp, argv, argc);
case NVIF_OUTP_V0_DP_MST_VCPI : return nvkm_uoutp_mthd_dp_mst_vcpi (outp, argv, argc);
default:
break;
--
2.41.0