diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c | 362 |
1 files changed, 92 insertions, 270 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c index b8ac66b4a2c4..a109348bd63b 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c @@ -41,6 +41,40 @@ */ #define AMPERE_IED_HACK(disp) ((disp)->engine.subdev.device->card_type >= GA100) +static int +nvkm_dp_mst_id_put(struct nvkm_outp *outp, u32 id) +{ + return 0; +} + +static int +nvkm_dp_mst_id_get(struct nvkm_outp *outp, u32 *pid) +{ + *pid = BIT(outp->index); + return 0; +} + +static int +nvkm_dp_aux_xfer(struct nvkm_outp *outp, u8 type, u32 addr, u8 *data, u8 *size) +{ + int ret = nvkm_i2c_aux_acquire(outp->dp.aux); + + if (ret) + return ret; + + ret = nvkm_i2c_aux_xfer(outp->dp.aux, false, type, addr, data, size); + nvkm_i2c_aux_release(outp->dp.aux); + return ret; +} + +static int +nvkm_dp_aux_pwr(struct nvkm_outp *outp, bool pu) +{ + outp->dp.enabled = pu; + nvkm_dp_enable(outp, outp->dp.enabled); + return 0; +} + struct lt_state { struct nvkm_outp *outp; @@ -282,31 +316,20 @@ 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; if (ior->dp.ef) sink[1] |= DPCD_LC01_ENHANCED_FRAME_EN; + if (outp->dp.lt.post_adj) + sink[1] |= 0x20; ret = nvkm_wraux(outp->dp.aux, DPCD_LC00_LINK_BW_SET, sink, 2); if (ret) @@ -447,71 +470,58 @@ nvkm_dp_train_init(struct nvkm_outp *outp) } static int -nvkm_dp_train(struct nvkm_outp *outp, u32 dataKBps) +nvkm_dp_drive(struct nvkm_outp *outp, u8 lanes, u8 pe[4], u8 vs[4]) +{ + struct lt_state lt = { + .outp = outp, + .stat[4] = (pe[0] << 2) | (vs[0] << 0) | + (pe[1] << 6) | (vs[1] << 4), + .stat[5] = (pe[2] << 2) | (vs[2] << 0) | + (pe[3] << 6) | (vs[3] << 4), + }; + + return nvkm_dp_train_drive(<, false); +} + +static int +nvkm_dp_train(struct nvkm_outp *outp, bool retrain) { struct nvkm_ior *ior = outp->ior; - int ret = -EINVAL, nr, rate; - u8 pwr; + int ret, rate; - /* Retraining link? Skip source configuration, it can mess up the active modeset. */ - if (atomic_read(&outp->dp.lt.done)) { - for (rate = 0; rate < outp->dp.rates; rate++) { - if (outp->dp.rate[rate].rate == ior->dp.bw * 27000) - return nvkm_dp_train_link(outp, ret); - } - WARN_ON(1); - return -EINVAL; + for (rate = 0; rate < outp->dp.rates; rate++) { + if (outp->dp.rate[rate].rate == (retrain ? ior->dp.bw : outp->dp.lt.bw) * 27000) + break; } - /* Ensure sink is not in a low-power state. */ - if (!nvkm_rdaux(outp->dp.aux, DPCD_SC00, &pwr, 1)) { - if ((pwr & DPCD_SC00_SET_POWER) != DPCD_SC00_SET_POWER_D0) { - pwr &= ~DPCD_SC00_SET_POWER; - pwr |= DPCD_SC00_SET_POWER_D0; - nvkm_wraux(outp->dp.aux, DPCD_SC00, &pwr, 1); - } + if (WARN_ON(rate == outp->dp.rates)) + return -EINVAL; + + /* Retraining link? Skip source configuration, it can mess up the active modeset. */ + if (retrain) { + mutex_lock(&outp->dp.mutex); + ret = nvkm_dp_train_link(outp, rate); + mutex_unlock(&outp->dp.mutex); + return ret; } + mutex_lock(&outp->dp.mutex); + OUTP_DBG(outp, "training"); + ior->dp.mst = outp->dp.lt.mst; ior->dp.ef = outp->dp.dpcd[DPCD_RC02] & DPCD_RC02_ENHANCED_FRAME_CAP; - ior->dp.nr = 0; + ior->dp.bw = outp->dp.lt.bw; + ior->dp.nr = outp->dp.lt.nr; - /* Link training. */ - 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++) { - if (outp->dp.rate[rate].rate * nr >= dataKBps || WARN_ON(!ior->dp.nr)) { - /* Program selected link configuration. */ - ior->dp.bw = outp->dp.rate[rate].rate / 27000; - ior->dp.nr = nr; - ret = nvkm_dp_train_links(outp, rate); - } - } - } - - /* Finish up. */ + ret = nvkm_dp_train_links(outp, rate); nvkm_dp_train_fini(outp); if (ret < 0) OUTP_ERR(outp, "training failed"); else OUTP_DBG(outp, "training done"); - atomic_set(&outp->dp.lt.done, 1); + + mutex_unlock(&outp->dp.mutex); return ret; } @@ -529,155 +539,10 @@ nvkm_dp_disable(struct nvkm_outp *outp, struct nvkm_ior *ior) static void nvkm_dp_release(struct nvkm_outp *outp) { - /* Prevent link from being retrained if sink sends an IRQ. */ - atomic_set(&outp->dp.lt.done, 0); outp->ior->dp.nr = 0; -} - -static int -nvkm_dp_acquire(struct nvkm_outp *outp) -{ - struct nvkm_ior *ior = outp->ior; - struct nvkm_head *head; - bool retrain = true; - u32 datakbps = 0; - u32 dataKBps; - u32 linkKBps; - u8 stat[3]; - int ret, i; - - mutex_lock(&outp->dp.mutex); - - /* Check that link configuration meets current requirements. */ - list_for_each_entry(head, &outp->disp->heads, head) { - if (ior->asy.head & (1 << head->id)) { - u32 khz = (head->asy.hz >> ior->asy.rgdiv) / 1000; - datakbps += khz * head->asy.or.depth; - } - } - - linkKBps = ior->dp.bw * 27000 * ior->dp.nr; - dataKBps = DIV_ROUND_UP(datakbps, 8); - OUTP_DBG(outp, "data %d KB/s link %d KB/s mst %d->%d", - dataKBps, linkKBps, ior->dp.mst, outp->dp.lt.mst); - if (linkKBps < dataKBps || ior->dp.mst != outp->dp.lt.mst) { - OUTP_DBG(outp, "link requirements changed"); - goto done; - } - - /* Check that link is still trained. */ - ret = nvkm_rdaux(outp->dp.aux, DPCD_LS02, stat, 3); - if (ret) { - OUTP_DBG(outp, "failed to read link status, assuming no sink"); - goto done; - } - - if (stat[2] & DPCD_LS04_INTERLANE_ALIGN_DONE) { - for (i = 0; i < ior->dp.nr; i++) { - u8 lane = (stat[i >> 1] >> ((i & 1) * 4)) & 0x0f; - if (!(lane & DPCD_LS02_LANE0_CR_DONE) || - !(lane & DPCD_LS02_LANE0_CHANNEL_EQ_DONE) || - !(lane & DPCD_LS02_LANE0_SYMBOL_LOCKED)) { - OUTP_DBG(outp, "lane %d not equalised", lane); - goto done; - } - } - retrain = false; - } else { - OUTP_DBG(outp, "no inter-lane alignment"); - } - -done: - if (retrain || !atomic_read(&outp->dp.lt.done)) - ret = nvkm_dp_train(outp, dataKBps); - mutex_unlock(&outp->dp.mutex); - return ret; -} - -static bool -nvkm_dp_enable_supported_link_rates(struct nvkm_outp *outp) -{ - u8 sink_rates[DPCD_RC10_SUPPORTED_LINK_RATES__SIZE]; - int i, j, k; - - if (outp->conn->info.type != DCB_CONNECTOR_eDP || - outp->dp.dpcd[DPCD_RC00_DPCD_REV] < 0x13 || - nvkm_rdaux(outp->dp.aux, DPCD_RC10_SUPPORTED_LINK_RATES(0), - sink_rates, sizeof(sink_rates))) - return false; - - for (i = 0; i < ARRAY_SIZE(sink_rates); i += 2) { - const u32 rate = ((sink_rates[i + 1] << 8) | sink_rates[i]) * 200 / 10; - - if (!rate || WARN_ON(outp->dp.rates == ARRAY_SIZE(outp->dp.rate))) - break; - - if (rate > outp->info.dpconf.link_bw * 27000) { - OUTP_DBG(outp, "rate %d !outp", rate); - continue; - } - - for (j = 0; j < outp->dp.rates; j++) { - if (rate > outp->dp.rate[j].rate) { - for (k = outp->dp.rates; k > j; k--) - outp->dp.rate[k] = outp->dp.rate[k - 1]; - break; - } - } - - outp->dp.rate[j].dpcd = i / 2; - outp->dp.rate[j].rate = rate; - outp->dp.rates++; - } - - for (i = 0; i < outp->dp.rates; i++) - OUTP_DBG(outp, "link_rate[%d] = %d", outp->dp.rate[i].dpcd, outp->dp.rate[i].rate); + nvkm_dp_disable(outp, outp->ior); - return outp->dp.rates != 0; -} - -/* 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; + nvkm_outp_release(outp); } void @@ -711,66 +576,11 @@ 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)) { - const u8 rates[] = { 0x1e, 0x14, 0x0a, 0x06, 0 }; - const u8 *rate; - int rate_max; - - outp->dp.rates = 0; - 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]); - - rate_max = outp->dp.dpcd[DPCD_RC01_MAX_LINK_RATE]; - rate_max = min(rate_max, outp->info.dpconf.link_bw); - if (outp->dp.lttprs && outp->dp.lttpr[1]) - rate_max = min_t(int, rate_max, outp->dp.lttpr[1]); - - if (!nvkm_dp_enable_supported_link_rates(outp)) { - for (rate = rates; *rate; rate++) { - if (*rate > rate_max) - continue; - - if (WARN_ON(outp->dp.rates == ARRAY_SIZE(outp->dp.rate))) - break; - - outp->dp.rate[outp->dp.rates].dpcd = -1; - outp->dp.rate[outp->dp.rates].rate = *rate * 27000; - outp->dp.rates++; - } - } - } } else if (!auxpwr && outp->dp.aux_pwr) { OUTP_DBG(outp, "aux power -> demand"); nvkm_i2c_aux_monitor(aux, false); outp->dp.aux_pwr = false; - atomic_set(&outp->dp.lt.done, 0); /* Restore eDP panel GPIO to its prior state if we changed it, as * it could potentially interfere with other outputs. @@ -793,6 +603,7 @@ nvkm_dp_fini(struct nvkm_outp *outp) static void nvkm_dp_init(struct nvkm_outp *outp) { + nvkm_outp_init(outp); nvkm_dp_enable(outp, outp->dp.enabled); } @@ -807,9 +618,18 @@ nvkm_dp_func = { .dtor = nvkm_dp_dtor, .init = nvkm_dp_init, .fini = nvkm_dp_fini, - .acquire = nvkm_dp_acquire, + .detect = nvkm_outp_detect, + .inherit = nvkm_outp_inherit, + .acquire = nvkm_outp_acquire, .release = nvkm_dp_release, - .disable = nvkm_dp_disable, + .bl.get = nvkm_outp_bl_get, + .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, + .dp.drive = nvkm_dp_drive, + .dp.mst_id_get = nvkm_dp_mst_id_get, + .dp.mst_id_put = nvkm_dp_mst_id_put, }; int @@ -819,7 +639,7 @@ nvkm_dp_new(struct nvkm_disp *disp, int index, struct dcb_output *dcbE, struct n struct nvkm_bios *bios = device->bios; struct nvkm_i2c *i2c = device->i2c; struct nvkm_outp *outp; - u8 hdr, cnt, len; + u8 ver, hdr, cnt, len; u32 data; int ret; @@ -847,7 +667,9 @@ nvkm_dp_new(struct nvkm_disp *disp, int index, struct dcb_output *dcbE, struct n OUTP_DBG(outp, "bios dp %02x %02x %02x %02x", outp->dp.version, hdr, cnt, len); + data = nvbios_dp_table(bios, &ver, &hdr, &cnt, &len); + outp->dp.mst = data && ver >= 0x40 && (nvbios_rd08(bios, data + 0x08) & 0x04); + mutex_init(&outp->dp.mutex); - atomic_set(&outp->dp.lt.done, 0); return 0; } |