diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_dp_mst.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_dp_mst.c | 778 |
1 files changed, 0 insertions, 778 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_dp_mst.c b/drivers/gpu/drm/radeon/radeon_dp_mst.c deleted file mode 100644 index 54ced1f4ff67..000000000000 --- a/drivers/gpu/drm/radeon/radeon_dp_mst.c +++ /dev/null @@ -1,778 +0,0 @@ -// SPDX-License-Identifier: MIT - -#include <drm/display/drm_dp_mst_helper.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_file.h> -#include <drm/drm_probe_helper.h> - -#include "atom.h" -#include "ni_reg.h" -#include "radeon.h" - -static struct radeon_encoder *radeon_dp_create_fake_mst_encoder(struct radeon_connector *connector); - -static int radeon_atom_set_enc_offset(int id) -{ - static const int offsets[] = { EVERGREEN_CRTC0_REGISTER_OFFSET, - EVERGREEN_CRTC1_REGISTER_OFFSET, - EVERGREEN_CRTC2_REGISTER_OFFSET, - EVERGREEN_CRTC3_REGISTER_OFFSET, - EVERGREEN_CRTC4_REGISTER_OFFSET, - EVERGREEN_CRTC5_REGISTER_OFFSET, - 0x13830 - 0x7030 }; - - return offsets[id]; -} - -static int radeon_dp_mst_set_be_cntl(struct radeon_encoder *primary, - struct radeon_encoder_mst *mst_enc, - enum radeon_hpd_id hpd, bool enable) -{ - struct drm_device *dev = primary->base.dev; - struct radeon_device *rdev = dev->dev_private; - uint32_t reg; - int retries = 0; - uint32_t temp; - - reg = RREG32(NI_DIG_BE_CNTL + primary->offset); - - /* set MST mode */ - reg &= ~NI_DIG_FE_DIG_MODE(7); - reg |= NI_DIG_FE_DIG_MODE(NI_DIG_MODE_DP_MST); - - if (enable) - reg |= NI_DIG_FE_SOURCE_SELECT(1 << mst_enc->fe); - else - reg &= ~NI_DIG_FE_SOURCE_SELECT(1 << mst_enc->fe); - - reg |= NI_DIG_HPD_SELECT(hpd); - DRM_DEBUG_KMS("writing 0x%08x 0x%08x\n", NI_DIG_BE_CNTL + primary->offset, reg); - WREG32(NI_DIG_BE_CNTL + primary->offset, reg); - - if (enable) { - uint32_t offset = radeon_atom_set_enc_offset(mst_enc->fe); - - do { - temp = RREG32(NI_DIG_FE_CNTL + offset); - } while ((temp & NI_DIG_SYMCLK_FE_ON) && retries++ < 10000); - if (retries == 10000) - DRM_ERROR("timed out waiting for FE %d %d\n", primary->offset, mst_enc->fe); - } - return 0; -} - -static int radeon_dp_mst_set_stream_attrib(struct radeon_encoder *primary, - int stream_number, - int fe, - int slots) -{ - struct drm_device *dev = primary->base.dev; - struct radeon_device *rdev = dev->dev_private; - u32 temp, val; - int retries = 0; - int satreg, satidx; - - satreg = stream_number >> 1; - satidx = stream_number & 1; - - temp = RREG32(NI_DP_MSE_SAT0 + satreg + primary->offset); - - val = NI_DP_MSE_SAT_SLOT_COUNT0(slots) | NI_DP_MSE_SAT_SRC0(fe); - - val <<= (16 * satidx); - - temp &= ~(0xffff << (16 * satidx)); - - temp |= val; - - DRM_DEBUG_KMS("writing 0x%08x 0x%08x\n", NI_DP_MSE_SAT0 + satreg + primary->offset, temp); - WREG32(NI_DP_MSE_SAT0 + satreg + primary->offset, temp); - - WREG32(NI_DP_MSE_SAT_UPDATE + primary->offset, 1); - - do { - unsigned value1, value2; - udelay(10); - temp = RREG32(NI_DP_MSE_SAT_UPDATE + primary->offset); - - value1 = temp & NI_DP_MSE_SAT_UPDATE_MASK; - value2 = temp & NI_DP_MSE_16_MTP_KEEPOUT; - - if (!value1 && !value2) - break; - } while (retries++ < 50); - - if (retries == 10000) - DRM_ERROR("timed out waitin for SAT update %d\n", primary->offset); - - /* MTP 16 ? */ - return 0; -} - -static int radeon_dp_mst_update_stream_attribs(struct radeon_connector *mst_conn, - struct radeon_encoder *primary) -{ - struct drm_device *dev = mst_conn->base.dev; - struct stream_attribs new_attribs[6]; - int i; - int idx = 0; - struct radeon_connector *radeon_connector; - struct drm_connector *connector; - - memset(new_attribs, 0, sizeof(new_attribs)); - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - struct radeon_encoder *subenc; - struct radeon_encoder_mst *mst_enc; - - radeon_connector = to_radeon_connector(connector); - if (!radeon_connector->is_mst_connector) - continue; - - if (radeon_connector->mst_port != mst_conn) - continue; - - subenc = radeon_connector->mst_encoder; - mst_enc = subenc->enc_priv; - - if (!mst_enc->enc_active) - continue; - - new_attribs[idx].fe = mst_enc->fe; - new_attribs[idx].slots = drm_dp_mst_get_vcpi_slots(&mst_conn->mst_mgr, mst_enc->port); - idx++; - } - - for (i = 0; i < idx; i++) { - if (new_attribs[i].fe != mst_conn->cur_stream_attribs[i].fe || - new_attribs[i].slots != mst_conn->cur_stream_attribs[i].slots) { - radeon_dp_mst_set_stream_attrib(primary, i, new_attribs[i].fe, new_attribs[i].slots); - mst_conn->cur_stream_attribs[i].fe = new_attribs[i].fe; - mst_conn->cur_stream_attribs[i].slots = new_attribs[i].slots; - } - } - - for (i = idx; i < mst_conn->enabled_attribs; i++) { - radeon_dp_mst_set_stream_attrib(primary, i, 0, 0); - mst_conn->cur_stream_attribs[i].fe = 0; - mst_conn->cur_stream_attribs[i].slots = 0; - } - mst_conn->enabled_attribs = idx; - return 0; -} - -static int radeon_dp_mst_set_vcp_size(struct radeon_encoder *mst, s64 avg_time_slots_per_mtp) -{ - struct drm_device *dev = mst->base.dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder_mst *mst_enc = mst->enc_priv; - uint32_t val, temp; - uint32_t offset = radeon_atom_set_enc_offset(mst_enc->fe); - int retries = 0; - uint32_t x = drm_fixp2int(avg_time_slots_per_mtp); - uint32_t y = drm_fixp2int_ceil((avg_time_slots_per_mtp - x) << 26); - - val = NI_DP_MSE_RATE_X(x) | NI_DP_MSE_RATE_Y(y); - - WREG32(NI_DP_MSE_RATE_CNTL + offset, val); - - do { - temp = RREG32(NI_DP_MSE_RATE_UPDATE + offset); - udelay(10); - } while ((temp & 0x1) && (retries++ < 10000)); - - if (retries >= 10000) - DRM_ERROR("timed out wait for rate cntl %d\n", mst_enc->fe); - return 0; -} - -static int radeon_dp_mst_get_ddc_modes(struct drm_connector *connector) -{ - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - struct radeon_connector *master = radeon_connector->mst_port; - struct edid *edid; - int ret = 0; - - edid = drm_dp_mst_get_edid(connector, &master->mst_mgr, radeon_connector->port); - radeon_connector->edid = edid; - DRM_DEBUG_KMS("edid retrieved %p\n", edid); - if (radeon_connector->edid) { - drm_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid); - ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid); - return ret; - } - drm_connector_update_edid_property(&radeon_connector->base, NULL); - - return ret; -} - -static int radeon_dp_mst_get_modes(struct drm_connector *connector) -{ - return radeon_dp_mst_get_ddc_modes(connector); -} - -static enum drm_mode_status -radeon_dp_mst_mode_valid(struct drm_connector *connector, - struct drm_display_mode *mode) -{ - /* TODO - validate mode against available PBN for link */ - if (mode->clock < 10000) - return MODE_CLOCK_LOW; - - if (mode->flags & DRM_MODE_FLAG_DBLCLK) - return MODE_H_ILLEGAL; - - return MODE_OK; -} - -static struct -drm_encoder *radeon_mst_best_encoder(struct drm_connector *connector) -{ - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - - return &radeon_connector->mst_encoder->base; -} - -static int -radeon_dp_mst_detect(struct drm_connector *connector, - struct drm_modeset_acquire_ctx *ctx, - bool force) -{ - struct radeon_connector *radeon_connector = - to_radeon_connector(connector); - struct radeon_connector *master = radeon_connector->mst_port; - - if (drm_connector_is_unregistered(connector)) - return connector_status_disconnected; - - return drm_dp_mst_detect_port(connector, ctx, &master->mst_mgr, - radeon_connector->port); -} - -static const struct drm_connector_helper_funcs radeon_dp_mst_connector_helper_funcs = { - .get_modes = radeon_dp_mst_get_modes, - .mode_valid = radeon_dp_mst_mode_valid, - .best_encoder = radeon_mst_best_encoder, - .detect_ctx = radeon_dp_mst_detect, -}; - -static void -radeon_dp_mst_connector_destroy(struct drm_connector *connector) -{ - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - struct radeon_encoder *radeon_encoder = radeon_connector->mst_encoder; - - drm_encoder_cleanup(&radeon_encoder->base); - kfree(radeon_encoder); - drm_connector_cleanup(connector); - kfree(radeon_connector); -} - -static const struct drm_connector_funcs radeon_dp_mst_connector_funcs = { - .dpms = drm_helper_connector_dpms, - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = radeon_dp_mst_connector_destroy, -}; - -static struct drm_connector *radeon_dp_add_mst_connector(struct drm_dp_mst_topology_mgr *mgr, - struct drm_dp_mst_port *port, - const char *pathprop) -{ - struct radeon_connector *master = container_of(mgr, struct radeon_connector, mst_mgr); - struct drm_device *dev = master->base.dev; - struct radeon_connector *radeon_connector; - struct drm_connector *connector; - - radeon_connector = kzalloc(sizeof(*radeon_connector), GFP_KERNEL); - if (!radeon_connector) - return NULL; - - radeon_connector->is_mst_connector = true; - connector = &radeon_connector->base; - radeon_connector->port = port; - radeon_connector->mst_port = master; - DRM_DEBUG_KMS("\n"); - - drm_connector_init(dev, connector, &radeon_dp_mst_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort); - drm_connector_helper_add(connector, &radeon_dp_mst_connector_helper_funcs); - radeon_connector->mst_encoder = radeon_dp_create_fake_mst_encoder(master); - - drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0); - drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0); - drm_connector_set_path_property(connector, pathprop); - - return connector; -} - -static const struct drm_dp_mst_topology_cbs mst_cbs = { - .add_connector = radeon_dp_add_mst_connector, -}; - -static struct -radeon_connector *radeon_mst_find_connector(struct drm_encoder *encoder) -{ - struct drm_device *dev = encoder->dev; - struct drm_connector *connector; - - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - struct radeon_connector *radeon_connector = to_radeon_connector(connector); - if (!connector->encoder) - continue; - if (!radeon_connector->is_mst_connector) - continue; - - DRM_DEBUG_KMS("checking %p vs %p\n", connector->encoder, encoder); - if (connector->encoder == encoder) - return radeon_connector; - } - return NULL; -} - -void radeon_dp_mst_prepare_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) -{ - struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); - struct drm_device *dev = crtc->dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder *radeon_encoder = to_radeon_encoder(radeon_crtc->encoder); - struct radeon_encoder_mst *mst_enc = radeon_encoder->enc_priv; - struct radeon_connector *radeon_connector = radeon_mst_find_connector(&radeon_encoder->base); - int dp_clock; - struct radeon_connector_atom_dig *dig_connector = mst_enc->connector->con_priv; - - if (radeon_connector) { - radeon_connector->pixelclock_for_modeset = mode->clock; - if (radeon_connector->base.display_info.bpc) - radeon_crtc->bpc = radeon_connector->base.display_info.bpc; - else - radeon_crtc->bpc = 8; - } - - DRM_DEBUG_KMS("dp_clock %p %d\n", dig_connector, dig_connector->dp_clock); - dp_clock = dig_connector->dp_clock; - radeon_crtc->ss_enabled = - radeon_atombios_get_asic_ss_info(rdev, &radeon_crtc->ss, - ASIC_INTERNAL_SS_ON_DP, - dp_clock); -} - -static void -radeon_mst_encoder_dpms(struct drm_encoder *encoder, int mode) -{ - struct drm_device *dev = encoder->dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder *radeon_encoder, *primary; - struct radeon_encoder_mst *mst_enc; - struct radeon_encoder_atom_dig *dig_enc; - struct radeon_connector *radeon_connector; - struct drm_crtc *crtc; - struct radeon_crtc *radeon_crtc; - int slots; - s64 fixed_pbn, fixed_pbn_per_slot, avg_time_slots_per_mtp; - if (!ASIC_IS_DCE5(rdev)) { - DRM_ERROR("got mst dpms on non-DCE5\n"); - return; - } - - radeon_connector = radeon_mst_find_connector(encoder); - if (!radeon_connector) - return; - - radeon_encoder = to_radeon_encoder(encoder); - - mst_enc = radeon_encoder->enc_priv; - - primary = mst_enc->primary; - - dig_enc = primary->enc_priv; - - crtc = encoder->crtc; - DRM_DEBUG_KMS("got connector %d\n", dig_enc->active_mst_links); - - switch (mode) { - case DRM_MODE_DPMS_ON: - dig_enc->active_mst_links++; - - radeon_crtc = to_radeon_crtc(crtc); - - if (dig_enc->active_mst_links == 1) { - mst_enc->fe = dig_enc->dig_encoder; - mst_enc->fe_from_be = true; - atombios_set_mst_encoder_crtc_source(encoder, mst_enc->fe); - - atombios_dig_encoder_setup(&primary->base, ATOM_ENCODER_CMD_SETUP, 0); - atombios_dig_transmitter_setup2(&primary->base, ATOM_TRANSMITTER_ACTION_ENABLE, - 0, 0, dig_enc->dig_encoder); - - if (radeon_dp_needs_link_train(mst_enc->connector) || - dig_enc->active_mst_links == 1) { - radeon_dp_link_train(&primary->base, &mst_enc->connector->base); - } - - } else { - mst_enc->fe = radeon_atom_pick_dig_encoder(encoder, radeon_crtc->crtc_id); - if (mst_enc->fe == -1) - DRM_ERROR("failed to get frontend for dig encoder\n"); - mst_enc->fe_from_be = false; - atombios_set_mst_encoder_crtc_source(encoder, mst_enc->fe); - } - - DRM_DEBUG_KMS("dig encoder is %d %d %d\n", dig_enc->dig_encoder, - dig_enc->linkb, radeon_crtc->crtc_id); - - slots = drm_dp_find_vcpi_slots(&radeon_connector->mst_port->mst_mgr, - mst_enc->pbn); - drm_dp_mst_allocate_vcpi(&radeon_connector->mst_port->mst_mgr, - radeon_connector->port, - mst_enc->pbn, slots); - drm_dp_update_payload_part1(&radeon_connector->mst_port->mst_mgr, 1); - - radeon_dp_mst_set_be_cntl(primary, mst_enc, - radeon_connector->mst_port->hpd.hpd, true); - - mst_enc->enc_active = true; - radeon_dp_mst_update_stream_attribs(radeon_connector->mst_port, primary); - - fixed_pbn = drm_int2fixp(mst_enc->pbn); - fixed_pbn_per_slot = drm_int2fixp(radeon_connector->mst_port->mst_mgr.pbn_div); - avg_time_slots_per_mtp = drm_fixp_div(fixed_pbn, fixed_pbn_per_slot); - radeon_dp_mst_set_vcp_size(radeon_encoder, avg_time_slots_per_mtp); - - atombios_dig_encoder_setup2(&primary->base, ATOM_ENCODER_CMD_DP_VIDEO_ON, 0, - mst_enc->fe); - drm_dp_check_act_status(&radeon_connector->mst_port->mst_mgr); - - drm_dp_update_payload_part2(&radeon_connector->mst_port->mst_mgr); - - break; - case DRM_MODE_DPMS_STANDBY: - case DRM_MODE_DPMS_SUSPEND: - case DRM_MODE_DPMS_OFF: - DRM_ERROR("DPMS OFF %d\n", dig_enc->active_mst_links); - - if (!mst_enc->enc_active) - return; - - drm_dp_mst_reset_vcpi_slots(&radeon_connector->mst_port->mst_mgr, mst_enc->port); - drm_dp_update_payload_part1(&radeon_connector->mst_port->mst_mgr, 1); - - drm_dp_check_act_status(&radeon_connector->mst_port->mst_mgr); - /* and this can also fail */ - drm_dp_update_payload_part2(&radeon_connector->mst_port->mst_mgr); - - drm_dp_mst_deallocate_vcpi(&radeon_connector->mst_port->mst_mgr, mst_enc->port); - - mst_enc->enc_active = false; - radeon_dp_mst_update_stream_attribs(radeon_connector->mst_port, primary); - - radeon_dp_mst_set_be_cntl(primary, mst_enc, - radeon_connector->mst_port->hpd.hpd, false); - atombios_dig_encoder_setup2(&primary->base, ATOM_ENCODER_CMD_DP_VIDEO_OFF, 0, - mst_enc->fe); - - if (!mst_enc->fe_from_be) - radeon_atom_release_dig_encoder(rdev, mst_enc->fe); - - mst_enc->fe_from_be = false; - dig_enc->active_mst_links--; - if (dig_enc->active_mst_links == 0) { - /* drop link */ - } - - break; - } - -} - -static bool radeon_mst_mode_fixup(struct drm_encoder *encoder, - const struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - struct radeon_encoder_mst *mst_enc; - struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); - struct radeon_connector_atom_dig *dig_connector; - int bpp = 24; - - mst_enc = radeon_encoder->enc_priv; - - mst_enc->pbn = drm_dp_calc_pbn_mode(adjusted_mode->clock, bpp, false); - - mst_enc->primary->active_device = mst_enc->primary->devices & mst_enc->connector->devices; - DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n", - mst_enc->primary->active_device, mst_enc->primary->devices, - mst_enc->connector->devices, mst_enc->primary->base.encoder_type); - - - drm_mode_set_crtcinfo(adjusted_mode, 0); - dig_connector = mst_enc->connector->con_priv; - dig_connector->dp_lane_count = drm_dp_max_lane_count(dig_connector->dpcd); - dig_connector->dp_clock = drm_dp_max_link_rate(dig_connector->dpcd); - DRM_DEBUG_KMS("dig clock %p %d %d\n", dig_connector, - dig_connector->dp_lane_count, dig_connector->dp_clock); - return true; -} - -static void radeon_mst_encoder_prepare(struct drm_encoder *encoder) -{ - struct radeon_connector *radeon_connector; - struct radeon_encoder *radeon_encoder, *primary; - struct radeon_encoder_mst *mst_enc; - struct radeon_encoder_atom_dig *dig_enc; - - radeon_connector = radeon_mst_find_connector(encoder); - if (!radeon_connector) { - DRM_DEBUG_KMS("failed to find connector %p\n", encoder); - return; - } - radeon_encoder = to_radeon_encoder(encoder); - - radeon_mst_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); - - mst_enc = radeon_encoder->enc_priv; - - primary = mst_enc->primary; - - dig_enc = primary->enc_priv; - - mst_enc->port = radeon_connector->port; - - if (dig_enc->dig_encoder == -1) { - dig_enc->dig_encoder = radeon_atom_pick_dig_encoder(&primary->base, -1); - primary->offset = radeon_atom_set_enc_offset(dig_enc->dig_encoder); - atombios_set_mst_encoder_crtc_source(encoder, dig_enc->dig_encoder); - - - } - DRM_DEBUG_KMS("%d %d\n", dig_enc->dig_encoder, primary->offset); -} - -static void -radeon_mst_encoder_mode_set(struct drm_encoder *encoder, - struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - DRM_DEBUG_KMS("\n"); -} - -static void radeon_mst_encoder_commit(struct drm_encoder *encoder) -{ - radeon_mst_encoder_dpms(encoder, DRM_MODE_DPMS_ON); - DRM_DEBUG_KMS("\n"); -} - -static const struct drm_encoder_helper_funcs radeon_mst_helper_funcs = { - .dpms = radeon_mst_encoder_dpms, - .mode_fixup = radeon_mst_mode_fixup, - .prepare = radeon_mst_encoder_prepare, - .mode_set = radeon_mst_encoder_mode_set, - .commit = radeon_mst_encoder_commit, -}; - -static void radeon_dp_mst_encoder_destroy(struct drm_encoder *encoder) -{ - drm_encoder_cleanup(encoder); - kfree(encoder); -} - -static const struct drm_encoder_funcs radeon_dp_mst_enc_funcs = { - .destroy = radeon_dp_mst_encoder_destroy, -}; - -static struct radeon_encoder * -radeon_dp_create_fake_mst_encoder(struct radeon_connector *connector) -{ - struct drm_device *dev = connector->base.dev; - struct radeon_device *rdev = dev->dev_private; - struct radeon_encoder *radeon_encoder; - struct radeon_encoder_mst *mst_enc; - struct drm_encoder *encoder; - const struct drm_connector_helper_funcs *connector_funcs = connector->base.helper_private; - struct drm_encoder *enc_master = connector_funcs->best_encoder(&connector->base); - - DRM_DEBUG_KMS("enc master is %p\n", enc_master); - radeon_encoder = kzalloc(sizeof(*radeon_encoder), GFP_KERNEL); - if (!radeon_encoder) - return NULL; - - radeon_encoder->enc_priv = kzalloc(sizeof(*mst_enc), GFP_KERNEL); - if (!radeon_encoder->enc_priv) { - kfree(radeon_encoder); - return NULL; - } - encoder = &radeon_encoder->base; - switch (rdev->num_crtc) { - case 1: - encoder->possible_crtcs = 0x1; - break; - case 2: - default: - encoder->possible_crtcs = 0x3; - break; - case 4: - encoder->possible_crtcs = 0xf; - break; - case 6: - encoder->possible_crtcs = 0x3f; - break; - } - - drm_encoder_init(dev, &radeon_encoder->base, &radeon_dp_mst_enc_funcs, - DRM_MODE_ENCODER_DPMST, NULL); - drm_encoder_helper_add(encoder, &radeon_mst_helper_funcs); - - mst_enc = radeon_encoder->enc_priv; - mst_enc->connector = connector; - mst_enc->primary = to_radeon_encoder(enc_master); - radeon_encoder->is_mst_encoder = true; - return radeon_encoder; -} - -int -radeon_dp_mst_init(struct radeon_connector *radeon_connector) -{ - struct drm_device *dev = radeon_connector->base.dev; - int max_link_rate; - - if (!radeon_connector->ddc_bus->has_aux) - return 0; - - if (radeon_connector_is_dp12_capable(&radeon_connector->base)) - max_link_rate = 0x14; - else - max_link_rate = 0x0a; - - radeon_connector->mst_mgr.cbs = &mst_cbs; - return drm_dp_mst_topology_mgr_init(&radeon_connector->mst_mgr, dev, - &radeon_connector->ddc_bus->aux, 16, 6, - 4, drm_dp_bw_code_to_link_rate(max_link_rate), - radeon_connector->base.base.id); -} - -int -radeon_dp_mst_probe(struct radeon_connector *radeon_connector) -{ - struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv; - struct drm_device *dev = radeon_connector->base.dev; - struct radeon_device *rdev = dev->dev_private; - int ret; - u8 msg[1]; - - if (!radeon_mst) - return 0; - - if (!ASIC_IS_DCE5(rdev)) - return 0; - - if (dig_connector->dpcd[DP_DPCD_REV] < 0x12) - return 0; - - ret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_MSTM_CAP, msg, - 1); - if (ret) { - if (msg[0] & DP_MST_CAP) { - DRM_DEBUG_KMS("Sink is MST capable\n"); - dig_connector->is_mst = true; - } else { - DRM_DEBUG_KMS("Sink is not MST capable\n"); - dig_connector->is_mst = false; - } - - } - drm_dp_mst_topology_mgr_set_mst(&radeon_connector->mst_mgr, - dig_connector->is_mst); - return dig_connector->is_mst; -} - -int -radeon_dp_mst_check_status(struct radeon_connector *radeon_connector) -{ - struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv; - int retry; - - if (dig_connector->is_mst) { - u8 esi[16] = { 0 }; - int dret; - int ret = 0; - bool handled; - - dret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, - DP_SINK_COUNT_ESI, esi, 8); -go_again: - if (dret == 8) { - DRM_DEBUG_KMS("got esi %3ph\n", esi); - ret = drm_dp_mst_hpd_irq(&radeon_connector->mst_mgr, esi, &handled); - - if (handled) { - for (retry = 0; retry < 3; retry++) { - int wret; - wret = drm_dp_dpcd_write(&radeon_connector->ddc_bus->aux, - DP_SINK_COUNT_ESI + 1, &esi[1], 3); - if (wret == 3) - break; - } - - dret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, - DP_SINK_COUNT_ESI, esi, 8); - if (dret == 8) { - DRM_DEBUG_KMS("got esi2 %3ph\n", esi); - goto go_again; - } - } else - ret = 0; - - return ret; - } else { - DRM_DEBUG_KMS("failed to get ESI - device may have failed %d\n", ret); - dig_connector->is_mst = false; - drm_dp_mst_topology_mgr_set_mst(&radeon_connector->mst_mgr, - dig_connector->is_mst); - /* send a hotplug event */ - } - } - return -EINVAL; -} - -#if defined(CONFIG_DEBUG_FS) - -static int radeon_debugfs_mst_info_show(struct seq_file *m, void *unused) -{ - struct radeon_device *rdev = (struct radeon_device *)m->private; - struct drm_device *dev = rdev->ddev; - struct drm_connector *connector; - struct radeon_connector *radeon_connector; - struct radeon_connector_atom_dig *dig_connector; - int i; - - drm_modeset_lock_all(dev); - list_for_each_entry(connector, &dev->mode_config.connector_list, head) { - if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) - continue; - - radeon_connector = to_radeon_connector(connector); - dig_connector = radeon_connector->con_priv; - if (radeon_connector->is_mst_connector) - continue; - if (!dig_connector->is_mst) - continue; - drm_dp_mst_dump_topology(m, &radeon_connector->mst_mgr); - - for (i = 0; i < radeon_connector->enabled_attribs; i++) - seq_printf(m, "attrib %d: %d %d\n", i, - radeon_connector->cur_stream_attribs[i].fe, - radeon_connector->cur_stream_attribs[i].slots); - } - drm_modeset_unlock_all(dev); - return 0; -} - -DEFINE_SHOW_ATTRIBUTE(radeon_debugfs_mst_info); -#endif - -void radeon_mst_debugfs_init(struct radeon_device *rdev) -{ -#if defined(CONFIG_DEBUG_FS) - struct dentry *root = rdev->ddev->primary->debugfs_root; - - debugfs_create_file("radeon_mst_info", 0444, root, rdev, - &radeon_debugfs_mst_info_fops); - -#endif -} |