+++ /dev/null
-// 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
-}
projects / linux-2.6-microblaze.git / commitdiff