int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
int panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE;
u16 dp_bridge = radeon_connector_encoder_get_dp_bridge_encoder_id(connector);
u8 tmp;
if (!ASIC_IS_DCE4(rdev))
return panel_mode;
if (dp_bridge != ENCODER_OBJECT_ID_NONE) {
/* DP bridge chips */
tmp = radeon_read_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_CAP);
if (tmp & 1)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
else if ((dp_bridge == ENCODER_OBJECT_ID_NUTMEG) ||
(dp_bridge == ENCODER_OBJECT_ID_TRAVIS))
panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
else
panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE;
} else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
/* eDP */
tmp = radeon_read_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_CAP);
if (tmp & 1)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
}
return panel_mode;
}
static void radeon_dp_set_panel_mode(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
int panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE;
if (!ASIC_IS_DCE4(rdev))
return;
if (radeon_connector_encoder_get_dp_bridge_encoder_id(connector) ==
ENCODER_OBJECT_ID_NUTMEG)
panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
else if (radeon_connector_encoder_get_dp_bridge_encoder_id(connector) ==
ENCODER_OBJECT_ID_TRAVIS)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
u8 tmp = radeon_read_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_CAP);
if (tmp & 1)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
}
atombios_dig_encoder_setup(encoder,
ATOM_ENCODER_CMD_SETUP_PANEL_MODE,
panel_mode);
if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) &&
(panel_mode == DP_PANEL_MODE_INTERNAL_DP2_MODE)) {
radeon_write_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_SET, 1);
}
}
void evergreen_enable_dp_audio_packets(struct drm_encoder *encoder, bool enable)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
uint32_t offset;
if (!dig || !dig->afmt)
return;
offset = dig->afmt->offset;
if (enable) {
struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
struct radeon_connector_atom_dig *dig_connector;
uint32_t val;
if (dig->afmt->enabled)
return;
WREG32(EVERGREEN_DP_SEC_TIMESTAMP + offset, EVERGREEN_DP_SEC_TIMESTAMP_MODE(1));
if (radeon_connector->con_priv) {
dig_connector = radeon_connector->con_priv;
val = RREG32(EVERGREEN_DP_SEC_AUD_N + offset);
val &= ~EVERGREEN_DP_SEC_N_BASE_MULTIPLE(0xf);
if (dig_connector->dp_clock == 162000)
val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(3);
else
val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(5);
WREG32(EVERGREEN_DP_SEC_AUD_N + offset, val);
}
WREG32(EVERGREEN_DP_SEC_CNTL + offset,
EVERGREEN_DP_SEC_ASP_ENABLE | /* Audio packet transmission */
EVERGREEN_DP_SEC_ATP_ENABLE | /* Audio timestamp packet transmission */
EVERGREEN_DP_SEC_AIP_ENABLE | /* Audio infoframe packet transmission */
EVERGREEN_DP_SEC_STREAM_ENABLE); /* Master enable for secondary stream engine */
radeon_audio_enable(rdev, dig->afmt->pin, 0xf);
} else {
if (!dig->afmt->enabled)
return;
WREG32(EVERGREEN_DP_SEC_CNTL + offset, 0);
radeon_audio_enable(rdev, dig->afmt->pin, 0);
}
dig->afmt->enabled = enable;
}
void evergreen_dp_enable(struct drm_encoder *encoder, bool enable)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
if (!dig || !dig->afmt)
return;
if (enable && drm_detect_monitor_audio(radeon_connector_edid(connector))) {
struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
struct radeon_connector_atom_dig *dig_connector;
uint32_t val;
WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
AFMT_AUDIO_SAMPLE_SEND);
WREG32(EVERGREEN_DP_SEC_TIMESTAMP + dig->afmt->offset,
EVERGREEN_DP_SEC_TIMESTAMP_MODE(1));
if (!ASIC_IS_DCE6(rdev) && radeon_connector->con_priv) {
dig_connector = radeon_connector->con_priv;
val = RREG32(EVERGREEN_DP_SEC_AUD_N + dig->afmt->offset);
val &= ~EVERGREEN_DP_SEC_N_BASE_MULTIPLE(0xf);
if (dig_connector->dp_clock == 162000)
val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(3);
else
val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(5);
WREG32(EVERGREEN_DP_SEC_AUD_N + dig->afmt->offset, val);
}
WREG32(EVERGREEN_DP_SEC_CNTL + dig->afmt->offset,
EVERGREEN_DP_SEC_ASP_ENABLE | /* Audio packet transmission */
EVERGREEN_DP_SEC_ATP_ENABLE | /* Audio timestamp packet transmission */
EVERGREEN_DP_SEC_AIP_ENABLE | /* Audio infoframe packet transmission */
EVERGREEN_DP_SEC_STREAM_ENABLE); /* Master enable for secondary stream engine */
} else {
WREG32(EVERGREEN_DP_SEC_CNTL + dig->afmt->offset, 0);
WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
~AFMT_AUDIO_SAMPLE_SEND);
}
dig->afmt->enabled = enable;
}
void radeon_dp_set_link_config(struct drm_connector *connector,
const struct drm_display_mode *mode)
{
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
struct radeon_connector_atom_dig *dig_connector;
if (!radeon_connector->con_priv)
return;
dig_connector = radeon_connector->con_priv;
if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
(dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP)) {
dig_connector->dp_clock =
radeon_dp_get_dp_link_clock(connector, dig_connector->dpcd, mode->clock);
dig_connector->dp_lane_count =
radeon_dp_get_dp_lane_number(connector, dig_connector->dpcd, mode->clock);
}
}
void radeon_dp_set_rx_power_state(struct drm_connector *connector,
u8 power_state)
{
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
struct radeon_connector_atom_dig *dig_connector;
if (!radeon_connector->con_priv)
return;
dig_connector = radeon_connector->con_priv;
/* power up/down the sink */
if (dig_connector->dpcd[0] >= 0x11) {
drm_dp_dpcd_writeb(&radeon_connector->ddc_bus->aux,
DP_SET_POWER, power_state);
usleep_range(1000, 2000);
}
}
int radeon_dp_mode_valid_helper(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
struct radeon_connector_atom_dig *dig_connector;
int dp_clock;
if (!radeon_connector->con_priv)
return MODE_CLOCK_HIGH;
dig_connector = radeon_connector->con_priv;
dp_clock =
radeon_dp_get_dp_link_clock(connector, dig_connector->dpcd, mode->clock);
if ((dp_clock == 540000) &&
(!radeon_connector_is_dp12_capable(connector)))
return MODE_CLOCK_HIGH;
return MODE_OK;
}
void radeon_dp_set_link_config(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct radeon_connector *radeon_connector;
struct radeon_connector_atom_dig *dig_connector;
if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) &&
(connector->connector_type != DRM_MODE_CONNECTOR_eDP))
return;
radeon_connector = to_radeon_connector(connector);
if (!radeon_connector->con_priv)
return;
dig_connector = radeon_connector->con_priv;
dig_connector->dp_clock =
dp_link_clock_for_mode_clock(dig_connector->dpcd, mode->clock);
dig_connector->dp_lane_count =
dp_lanes_for_mode_clock(dig_connector->dpcd, mode->clock);
}
int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
int panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE;
if (!ASIC_IS_DCE4(rdev))
return panel_mode;
if (radeon_connector_encoder_get_dp_bridge_encoder_id(connector) ==
ENCODER_OBJECT_ID_NUTMEG)
panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
else if (radeon_connector_encoder_get_dp_bridge_encoder_id(connector) ==
ENCODER_OBJECT_ID_TRAVIS) {
u8 id[6];
int i;
for (i = 0; i < 6; i++)
id[i] = radeon_read_dpcd_reg(radeon_connector, 0x503 + i);
if (id[0] == 0x73 &&
id[1] == 0x69 &&
id[2] == 0x76 &&
id[3] == 0x61 &&
id[4] == 0x72 &&
id[5] == 0x54)
panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
else
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
} else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
u8 tmp = radeon_read_dpcd_reg(radeon_connector, DP_EDP_CONFIGURATION_CAP);
if (tmp & 1)
panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
}
return panel_mode;
}
void radeon_dp_link_train(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_encoder_atom_dig *dig;
struct radeon_connector *radeon_connector;
struct radeon_connector_atom_dig *dig_connector;
struct radeon_dp_link_train_info dp_info;
int index;
u8 tmp, frev, crev;
if (!radeon_encoder->enc_priv)
return;
dig = radeon_encoder->enc_priv;
radeon_connector = to_radeon_connector(connector);
if (!radeon_connector->con_priv)
return;
dig_connector = radeon_connector->con_priv;
if ((dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_DISPLAYPORT) &&
(dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_eDP))
return;
/* DPEncoderService newer than 1.1 can't program properly the
* training pattern. When facing such version use the
* DIGXEncoderControl (X== 1 | 2)
*/
dp_info.use_dpencoder = true;
index = GetIndexIntoMasterTable(COMMAND, DPEncoderService);
if (atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev)) {
if (crev > 1) {
dp_info.use_dpencoder = false;
}
}
dp_info.enc_id = 0;
if (dig->dig_encoder)
dp_info.enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER;
else
dp_info.enc_id |= ATOM_DP_CONFIG_DIG1_ENCODER;
if (dig->linkb)
dp_info.enc_id |= ATOM_DP_CONFIG_LINK_B;
else
dp_info.enc_id |= ATOM_DP_CONFIG_LINK_A;
tmp = radeon_read_dpcd_reg(radeon_connector, DP_MAX_LANE_COUNT);
if (ASIC_IS_DCE5(rdev) && (tmp & DP_TPS3_SUPPORTED))
dp_info.tp3_supported = true;
else
dp_info.tp3_supported = false;
memcpy(dp_info.dpcd, dig_connector->dpcd, DP_RECEIVER_CAP_SIZE);
dp_info.rdev = rdev;
dp_info.encoder = encoder;
dp_info.connector = connector;
dp_info.radeon_connector = radeon_connector;
dp_info.dp_lane_count = dig_connector->dp_lane_count;
dp_info.dp_clock = dig_connector->dp_clock;
if (radeon_dp_link_train_init(&dp_info))
goto done;
if (radeon_dp_link_train_cr(&dp_info))
goto done;
if (radeon_dp_link_train_ce(&dp_info))
goto done;
done:
if (radeon_dp_link_train_finish(&dp_info))
return;
}
void dp_link_train(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_encoder_atom_dig *dig;
struct radeon_connector *radeon_connector;
struct radeon_connector_atom_dig *dig_connector;
int enc_id = 0;
bool clock_recovery, channel_eq;
u8 link_status[DP_LINK_STATUS_SIZE];
u8 link_configuration[DP_LINK_CONFIGURATION_SIZE];
u8 tries, voltage;
u8 train_set[4];
int i;
if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) &&
(connector->connector_type != DRM_MODE_CONNECTOR_eDP))
return;
if (!radeon_encoder->enc_priv)
return;
dig = radeon_encoder->enc_priv;
radeon_connector = to_radeon_connector(connector);
if (!radeon_connector->con_priv)
return;
dig_connector = radeon_connector->con_priv;
if (dig->dig_encoder)
enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER;
else
enc_id |= ATOM_DP_CONFIG_DIG1_ENCODER;
if (dig_connector->linkb)
enc_id |= ATOM_DP_CONFIG_LINK_B;
else
enc_id |= ATOM_DP_CONFIG_LINK_A;
memset(link_configuration, 0, DP_LINK_CONFIGURATION_SIZE);
if (dig_connector->dp_clock == 270000)
link_configuration[0] = DP_LINK_BW_2_7;
else
link_configuration[0] = DP_LINK_BW_1_62;
link_configuration[1] = dig_connector->dp_lane_count;
if (dig_connector->dpcd[0] >= 0x11)
link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
/* power up the sink */
dp_set_power(radeon_connector, DP_SET_POWER_D0);
/* disable the training pattern on the sink */
dp_set_training(radeon_connector, DP_TRAINING_PATTERN_DISABLE);
/* set link bw and lanes on the sink */
dp_set_link_bw_lanes(radeon_connector, link_configuration);
/* disable downspread on the sink */
dp_set_downspread(radeon_connector, 0);
/* start training on the source */
radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_START,
dig_connector->dp_clock, enc_id, 0);
/* set training pattern 1 on the source */
radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_PATTERN_SEL,
dig_connector->dp_clock, enc_id, 0);
/* set initial vs/emph */
memset(train_set, 0, 4);
udelay(400);
/* set training pattern 1 on the sink */
dp_set_training(radeon_connector, DP_TRAINING_PATTERN_1);
dp_update_dpvs_emph(radeon_connector, encoder, train_set);
/* clock recovery loop */
clock_recovery = false;
tries = 0;
voltage = 0xff;
for (;;) {
udelay(100);
if (!atom_dp_get_link_status(radeon_connector, link_status))
break;
if (dp_clock_recovery_ok(link_status, dig_connector->dp_lane_count)) {
clock_recovery = true;
break;
}
for (i = 0; i < dig_connector->dp_lane_count; i++) {
if ((train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0)
break;
}
if (i == dig_connector->dp_lane_count) {
DRM_ERROR("clock recovery reached max voltage\n");
break;
}
if ((train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) {
++tries;
if (tries == 5) {
DRM_ERROR("clock recovery tried 5 times\n");
break;
}
} else
tries = 0;
voltage = train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK;
/* Compute new train_set as requested by sink */
dp_get_adjust_train(link_status, dig_connector->dp_lane_count, train_set);
dp_update_dpvs_emph(radeon_connector, encoder, train_set);
}
if (!clock_recovery)
DRM_ERROR("clock recovery failed\n");
else
DRM_DEBUG("clock recovery at voltage %d pre-emphasis %d\n",
train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK,
(train_set[0] & DP_TRAIN_PRE_EMPHASIS_MASK) >>
DP_TRAIN_PRE_EMPHASIS_SHIFT);
/* set training pattern 2 on the sink */
dp_set_training(radeon_connector, DP_TRAINING_PATTERN_2);
/* set training pattern 2 on the source */
radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_PATTERN_SEL,
dig_connector->dp_clock, enc_id, 1);
/* channel equalization loop */
tries = 0;
channel_eq = false;
for (;;) {
udelay(400);
if (!atom_dp_get_link_status(radeon_connector, link_status))
break;
if (dp_channel_eq_ok(link_status, dig_connector->dp_lane_count)) {
channel_eq = true;
break;
}
/* Try 5 times */
if (tries > 5) {
DRM_ERROR("channel eq failed: 5 tries\n");
break;
}
/* Compute new train_set as requested by sink */
dp_get_adjust_train(link_status, dig_connector->dp_lane_count, train_set);
dp_update_dpvs_emph(radeon_connector, encoder, train_set);
tries++;
}
if (!channel_eq)
DRM_ERROR("channel eq failed\n");
else
DRM_DEBUG("channel eq at voltage %d pre-emphasis %d\n",
train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK,
(train_set[0] & DP_TRAIN_PRE_EMPHASIS_MASK)
>> DP_TRAIN_PRE_EMPHASIS_SHIFT);
/* disable the training pattern on the sink */
dp_set_training(radeon_connector, DP_TRAINING_PATTERN_DISABLE);
radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_COMPLETE,
dig_connector->dp_clock, enc_id, 0);
}
