Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2009 Red Hat Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 20 | * OTHER DEALINGS IN THE SOFTWARE. |
| 21 | * |
| 22 | * Authors: Ben Skeggs |
| 23 | */ |
| 24 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 25 | #include <drm/drmP.h> |
Linus Torvalds | 612a9aa | 2012-10-03 23:29:23 -0700 | [diff] [blame] | 26 | #include <drm/drm_dp_helper.h> |
Ben Skeggs | b01f060 | 2010-07-23 11:39:03 +1000 | [diff] [blame] | 27 | |
Ben Skeggs | 4dc2813 | 2016-05-20 09:22:55 +1000 | [diff] [blame] | 28 | #include "nouveau_drv.h" |
Ben Skeggs | b01f060 | 2010-07-23 11:39:03 +1000 | [diff] [blame] | 29 | #include "nouveau_connector.h" |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 30 | #include "nouveau_encoder.h" |
Ben Skeggs | 27a4598 | 2011-08-04 09:26:44 +1000 | [diff] [blame] | 31 | #include "nouveau_crtc.h" |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 32 | |
Ben Skeggs | 52aa30f | 2016-11-04 17:20:36 +1000 | [diff] [blame] | 33 | #include <nvif/class.h> |
| 34 | #include <nvif/cl5070.h> |
| 35 | |
Ben Skeggs | f479c0b | 2016-11-04 17:20:36 +1000 | [diff] [blame] | 36 | MODULE_PARM_DESC(mst, "Enable DisplayPort multi-stream (default: enabled)"); |
| 37 | static int nouveau_mst = 1; |
| 38 | module_param_named(mst, nouveau_mst, int, 0400); |
| 39 | |
Adam Jackson | 6225ee0 | 2012-05-14 16:05:49 -0400 | [diff] [blame] | 40 | static void |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 41 | nouveau_dp_probe_oui(struct drm_device *dev, struct nvkm_i2c_aux *aux, u8 *dpcd) |
Adam Jackson | 6225ee0 | 2012-05-14 16:05:49 -0400 | [diff] [blame] | 42 | { |
Ben Skeggs | 77145f1 | 2012-07-31 16:16:21 +1000 | [diff] [blame] | 43 | struct nouveau_drm *drm = nouveau_drm(dev); |
Adam Jackson | 6225ee0 | 2012-05-14 16:05:49 -0400 | [diff] [blame] | 44 | u8 buf[3]; |
| 45 | |
| 46 | if (!(dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) |
| 47 | return; |
| 48 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 49 | if (!nvkm_rdaux(aux, DP_SINK_OUI, buf, 3)) |
Ben Skeggs | 77145f1 | 2012-07-31 16:16:21 +1000 | [diff] [blame] | 50 | NV_DEBUG(drm, "Sink OUI: %02hx%02hx%02hx\n", |
Adam Jackson | 6225ee0 | 2012-05-14 16:05:49 -0400 | [diff] [blame] | 51 | buf[0], buf[1], buf[2]); |
| 52 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 53 | if (!nvkm_rdaux(aux, DP_BRANCH_OUI, buf, 3)) |
Ben Skeggs | 77145f1 | 2012-07-31 16:16:21 +1000 | [diff] [blame] | 54 | NV_DEBUG(drm, "Branch OUI: %02hx%02hx%02hx\n", |
Adam Jackson | 6225ee0 | 2012-05-14 16:05:49 -0400 | [diff] [blame] | 55 | buf[0], buf[1], buf[2]); |
| 56 | |
| 57 | } |
| 58 | |
Ben Skeggs | 8777c5c | 2014-06-06 18:09:55 +1000 | [diff] [blame] | 59 | int |
| 60 | nouveau_dp_detect(struct nouveau_encoder *nv_encoder) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 61 | { |
Ben Skeggs | 8777c5c | 2014-06-06 18:09:55 +1000 | [diff] [blame] | 62 | struct drm_device *dev = nv_encoder->base.base.dev; |
Ben Skeggs | 77145f1 | 2012-07-31 16:16:21 +1000 | [diff] [blame] | 63 | struct nouveau_drm *drm = nouveau_drm(dev); |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 64 | struct nvkm_i2c_aux *aux; |
Ben Skeggs | f20c665 | 2016-11-04 17:20:36 +1000 | [diff] [blame] | 65 | u8 dpcd[8]; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 66 | int ret; |
| 67 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 68 | aux = nv_encoder->aux; |
| 69 | if (!aux) |
Ben Skeggs | 8777c5c | 2014-06-06 18:09:55 +1000 | [diff] [blame] | 70 | return -ENODEV; |
Ben Skeggs | 52e0d0e | 2011-08-04 14:31:28 +1000 | [diff] [blame] | 71 | |
Ben Skeggs | f20c665 | 2016-11-04 17:20:36 +1000 | [diff] [blame] | 72 | ret = nvkm_rdaux(aux, DP_DPCD_REV, dpcd, sizeof(dpcd)); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 73 | if (ret) |
Ben Skeggs | 8777c5c | 2014-06-06 18:09:55 +1000 | [diff] [blame] | 74 | return ret; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 75 | |
Ben Skeggs | 75a1fcc | 2011-08-04 09:55:44 +1000 | [diff] [blame] | 76 | nv_encoder->dp.link_bw = 27000 * dpcd[1]; |
Ben Skeggs | 85341f2 | 2010-09-28 10:03:57 +1000 | [diff] [blame] | 77 | nv_encoder->dp.link_nr = dpcd[2] & DP_MAX_LANE_COUNT_MASK; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 78 | |
Ben Skeggs | 77145f1 | 2012-07-31 16:16:21 +1000 | [diff] [blame] | 79 | NV_DEBUG(drm, "display: %dx%d dpcd 0x%02x\n", |
Ben Skeggs | 75a1fcc | 2011-08-04 09:55:44 +1000 | [diff] [blame] | 80 | nv_encoder->dp.link_nr, nv_encoder->dp.link_bw, dpcd[0]); |
Ben Skeggs | 77145f1 | 2012-07-31 16:16:21 +1000 | [diff] [blame] | 81 | NV_DEBUG(drm, "encoder: %dx%d\n", |
Ben Skeggs | 75a1fcc | 2011-08-04 09:55:44 +1000 | [diff] [blame] | 82 | nv_encoder->dcb->dpconf.link_nr, |
| 83 | nv_encoder->dcb->dpconf.link_bw); |
| 84 | |
| 85 | if (nv_encoder->dcb->dpconf.link_nr < nv_encoder->dp.link_nr) |
| 86 | nv_encoder->dp.link_nr = nv_encoder->dcb->dpconf.link_nr; |
| 87 | if (nv_encoder->dcb->dpconf.link_bw < nv_encoder->dp.link_bw) |
| 88 | nv_encoder->dp.link_bw = nv_encoder->dcb->dpconf.link_bw; |
| 89 | |
Ben Skeggs | 77145f1 | 2012-07-31 16:16:21 +1000 | [diff] [blame] | 90 | NV_DEBUG(drm, "maximum: %dx%d\n", |
Ben Skeggs | 75a1fcc | 2011-08-04 09:55:44 +1000 | [diff] [blame] | 91 | nv_encoder->dp.link_nr, nv_encoder->dp.link_bw); |
Ben Skeggs | fe224bb | 2010-09-27 08:29:33 +1000 | [diff] [blame] | 92 | |
Ben Skeggs | 2aa5eac | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 93 | nouveau_dp_probe_oui(dev, aux, dpcd); |
Ben Skeggs | 52aa30f | 2016-11-04 17:20:36 +1000 | [diff] [blame] | 94 | |
Ben Skeggs | f479c0b | 2016-11-04 17:20:36 +1000 | [diff] [blame] | 95 | ret = nv50_mstm_detect(nv_encoder->dp.mstm, dpcd, nouveau_mst); |
| 96 | if (ret == 1) |
| 97 | return NOUVEAU_DP_MST; |
Ben Skeggs | 52aa30f | 2016-11-04 17:20:36 +1000 | [diff] [blame] | 98 | if (ret == 0) |
| 99 | return NOUVEAU_DP_SST; |
| 100 | return ret; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 101 | } |