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@@ -43,158 +43,242 @@ static char *pre_emph_names[] = {
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"0dB", "3.5dB", "6dB", "9.5dB"
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};
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-static const int dp_clocks[] = {
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- 54000, /* 1 lane, 1.62 Ghz */
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- 90000, /* 1 lane, 2.70 Ghz */
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- 108000, /* 2 lane, 1.62 Ghz */
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- 180000, /* 2 lane, 2.70 Ghz */
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- 216000, /* 4 lane, 1.62 Ghz */
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- 360000, /* 4 lane, 2.70 Ghz */
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+/***** radeon AUX functions *****/
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+union aux_channel_transaction {
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+ PROCESS_AUX_CHANNEL_TRANSACTION_PS_ALLOCATION v1;
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+ PROCESS_AUX_CHANNEL_TRANSACTION_PARAMETERS_V2 v2;
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};
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-static const int num_dp_clocks = sizeof(dp_clocks) / sizeof(int);
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+static int radeon_process_aux_ch(struct radeon_i2c_chan *chan,
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+ u8 *send, int send_bytes,
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+ u8 *recv, int recv_size,
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+ u8 delay, u8 *ack)
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+{
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+ struct drm_device *dev = chan->dev;
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+ struct radeon_device *rdev = dev->dev_private;
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+ union aux_channel_transaction args;
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+ int index = GetIndexIntoMasterTable(COMMAND, ProcessAuxChannelTransaction);
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+ unsigned char *base;
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+ int recv_bytes;
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+
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+ memset(&args, 0, sizeof(args));
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-/* common helper functions */
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-static int dp_lanes_for_mode_clock(u8 dpcd[DP_DPCD_SIZE], int mode_clock)
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+ base = (unsigned char *)rdev->mode_info.atom_context->scratch;
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+
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+ memcpy(base, send, send_bytes);
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+
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+ args.v1.lpAuxRequest = 0;
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+ args.v1.lpDataOut = 16;
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+ args.v1.ucDataOutLen = 0;
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+ args.v1.ucChannelID = chan->rec.i2c_id;
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+ args.v1.ucDelay = delay / 10;
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+ if (ASIC_IS_DCE4(rdev))
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+ args.v2.ucHPD_ID = chan->rec.hpd;
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+
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+ atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
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+
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+ *ack = args.v1.ucReplyStatus;
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+
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+ /* timeout */
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+ if (args.v1.ucReplyStatus == 1) {
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+ DRM_DEBUG_KMS("dp_aux_ch timeout\n");
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+ return -ETIMEDOUT;
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+ }
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+
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+ /* flags not zero */
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+ if (args.v1.ucReplyStatus == 2) {
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+ DRM_DEBUG_KMS("dp_aux_ch flags not zero\n");
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+ return -EBUSY;
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+ }
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+
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+ /* error */
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+ if (args.v1.ucReplyStatus == 3) {
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+ DRM_DEBUG_KMS("dp_aux_ch error\n");
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+ return -EIO;
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+ }
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+
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+ recv_bytes = args.v1.ucDataOutLen;
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+ if (recv_bytes > recv_size)
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+ recv_bytes = recv_size;
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+
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+ if (recv && recv_size)
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+ memcpy(recv, base + 16, recv_bytes);
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+
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+ return recv_bytes;
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+}
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+
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+static int radeon_dp_aux_native_write(struct radeon_connector *radeon_connector,
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+ u16 address, u8 *send, u8 send_bytes, u8 delay)
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{
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- int i;
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- u8 max_link_bw;
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- u8 max_lane_count;
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+ struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
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+ int ret;
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+ u8 msg[20];
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+ int msg_bytes = send_bytes + 4;
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+ u8 ack;
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- if (!dpcd)
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- return 0;
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+ if (send_bytes > 16)
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+ return -1;
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- max_link_bw = dpcd[DP_MAX_LINK_RATE];
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- max_lane_count = dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
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+ msg[0] = address;
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+ msg[1] = address >> 8;
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+ msg[2] = AUX_NATIVE_WRITE << 4;
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+ msg[3] = (msg_bytes << 4) | (send_bytes - 1);
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+ memcpy(&msg[4], send, send_bytes);
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- switch (max_link_bw) {
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- case DP_LINK_BW_1_62:
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- default:
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- for (i = 0; i < num_dp_clocks; i++) {
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- if (i % 2)
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- continue;
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- switch (max_lane_count) {
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- case 1:
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- if (i > 1)
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- return 0;
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- break;
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- case 2:
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- if (i > 3)
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- return 0;
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- break;
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- case 4:
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- default:
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- break;
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- }
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- if (dp_clocks[i] > mode_clock) {
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- if (i < 2)
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- return 1;
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- else if (i < 4)
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- return 2;
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- else
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- return 4;
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- }
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- }
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- break;
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- case DP_LINK_BW_2_7:
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- for (i = 0; i < num_dp_clocks; i++) {
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- switch (max_lane_count) {
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- case 1:
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- if (i > 1)
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- return 0;
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- break;
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- case 2:
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- if (i > 3)
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- return 0;
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- break;
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- case 4:
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- default:
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- break;
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- }
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- if (dp_clocks[i] > mode_clock) {
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- if (i < 2)
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- return 1;
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- else if (i < 4)
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- return 2;
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- else
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- return 4;
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- }
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- }
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- break;
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+ while (1) {
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+ ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus,
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+ msg, msg_bytes, NULL, 0, delay, &ack);
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+ if (ret < 0)
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+ return ret;
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+ if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
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+ break;
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+ else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER)
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+ udelay(400);
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+ else
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+ return -EIO;
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}
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- return 0;
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+ return send_bytes;
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}
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-static int dp_link_clock_for_mode_clock(u8 dpcd[DP_DPCD_SIZE], int mode_clock)
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+static int radeon_dp_aux_native_read(struct radeon_connector *radeon_connector,
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+ u16 address, u8 *recv, int recv_bytes, u8 delay)
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{
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- int i;
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- u8 max_link_bw;
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- u8 max_lane_count;
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+ struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
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+ u8 msg[4];
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+ int msg_bytes = 4;
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+ u8 ack;
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+ int ret;
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- if (!dpcd)
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- return 0;
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+ msg[0] = address;
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+ msg[1] = address >> 8;
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+ msg[2] = AUX_NATIVE_READ << 4;
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+ msg[3] = (msg_bytes << 4) | (recv_bytes - 1);
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+
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+ while (1) {
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+ ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus,
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+ msg, msg_bytes, recv, recv_bytes, delay, &ack);
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+ if (ret == 0)
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+ return -EPROTO;
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+ if (ret < 0)
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+ return ret;
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+ if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
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+ return ret;
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+ else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER)
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+ udelay(400);
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+ else
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+ return -EIO;
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+ }
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+}
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- max_link_bw = dpcd[DP_MAX_LINK_RATE];
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- max_lane_count = dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
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+static void radeon_write_dpcd_reg(struct radeon_connector *radeon_connector,
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+ u16 reg, u8 val)
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+{
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+ radeon_dp_aux_native_write(radeon_connector, reg, &val, 1, 0);
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+}
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- switch (max_link_bw) {
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- case DP_LINK_BW_1_62:
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+static u8 radeon_read_dpcd_reg(struct radeon_connector *radeon_connector,
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+ u16 reg)
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+{
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+ u8 val = 0;
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+
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+ radeon_dp_aux_native_read(radeon_connector, reg, &val, 1, 0);
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+
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+ return val;
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+}
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+
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+int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
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+ u8 write_byte, u8 *read_byte)
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+{
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+ struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
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+ struct radeon_i2c_chan *auxch = (struct radeon_i2c_chan *)adapter;
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+ u16 address = algo_data->address;
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+ u8 msg[5];
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+ u8 reply[2];
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+ unsigned retry;
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+ int msg_bytes;
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+ int reply_bytes = 1;
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+ int ret;
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+ u8 ack;
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+
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+ /* Set up the command byte */
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+ if (mode & MODE_I2C_READ)
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+ msg[2] = AUX_I2C_READ << 4;
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+ else
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+ msg[2] = AUX_I2C_WRITE << 4;
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+
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+ if (!(mode & MODE_I2C_STOP))
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+ msg[2] |= AUX_I2C_MOT << 4;
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+
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+ msg[0] = address;
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+ msg[1] = address >> 8;
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+
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+ switch (mode) {
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+ case MODE_I2C_WRITE:
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+ msg_bytes = 5;
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+ msg[3] = msg_bytes << 4;
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+ msg[4] = write_byte;
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+ break;
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+ case MODE_I2C_READ:
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+ msg_bytes = 4;
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+ msg[3] = msg_bytes << 4;
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+ break;
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default:
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- for (i = 0; i < num_dp_clocks; i++) {
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- if (i % 2)
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- continue;
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- switch (max_lane_count) {
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- case 1:
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- if (i > 1)
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- return 0;
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- break;
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- case 2:
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- if (i > 3)
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- return 0;
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- break;
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- case 4:
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- default:
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- break;
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- }
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- if (dp_clocks[i] > mode_clock)
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- return 162000;
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- }
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+ msg_bytes = 4;
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+ msg[3] = 3 << 4;
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break;
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- case DP_LINK_BW_2_7:
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- for (i = 0; i < num_dp_clocks; i++) {
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- switch (max_lane_count) {
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- case 1:
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- if (i > 1)
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- return 0;
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- break;
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- case 2:
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- if (i > 3)
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- return 0;
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- break;
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- case 4:
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- default:
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- break;
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- }
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- if (dp_clocks[i] > mode_clock)
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- return (i % 2) ? 270000 : 162000;
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- }
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}
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- return 0;
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-}
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+ for (retry = 0; retry < 4; retry++) {
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+ ret = radeon_process_aux_ch(auxch,
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+ msg, msg_bytes, reply, reply_bytes, 0, &ack);
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+ if (ret < 0) {
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+ DRM_DEBUG_KMS("aux_ch failed %d\n", ret);
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+ return ret;
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+ }
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-int dp_mode_valid(u8 dpcd[DP_DPCD_SIZE], int mode_clock)
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-{
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- int lanes = dp_lanes_for_mode_clock(dpcd, mode_clock);
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- int dp_clock = dp_link_clock_for_mode_clock(dpcd, mode_clock);
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+ switch (ack & AUX_NATIVE_REPLY_MASK) {
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+ case AUX_NATIVE_REPLY_ACK:
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+ /* I2C-over-AUX Reply field is only valid
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+ * when paired with AUX ACK.
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+ */
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+ break;
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+ case AUX_NATIVE_REPLY_NACK:
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+ DRM_DEBUG_KMS("aux_ch native nack\n");
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+ return -EREMOTEIO;
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+ case AUX_NATIVE_REPLY_DEFER:
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+ DRM_DEBUG_KMS("aux_ch native defer\n");
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+ udelay(400);
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+ continue;
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+ default:
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+ DRM_ERROR("aux_ch invalid native reply 0x%02x\n", ack);
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+ return -EREMOTEIO;
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+ }
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- if ((lanes == 0) || (dp_clock == 0))
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- return MODE_CLOCK_HIGH;
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+ switch (ack & AUX_I2C_REPLY_MASK) {
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+ case AUX_I2C_REPLY_ACK:
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+ if (mode == MODE_I2C_READ)
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+ *read_byte = reply[0];
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+ return ret;
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+ case AUX_I2C_REPLY_NACK:
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+ DRM_DEBUG_KMS("aux_i2c nack\n");
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+ return -EREMOTEIO;
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+ case AUX_I2C_REPLY_DEFER:
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+ DRM_DEBUG_KMS("aux_i2c defer\n");
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+ udelay(400);
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+ break;
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+ default:
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+ DRM_ERROR("aux_i2c invalid reply 0x%02x\n", ack);
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+ return -EREMOTEIO;
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+ }
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+ }
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- return MODE_OK;
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+ DRM_ERROR("aux i2c too many retries, giving up\n");
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+ return -EREMOTEIO;
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}
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+/***** general DP utility functions *****/
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+
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static u8 dp_link_status(u8 link_status[DP_LINK_STATUS_SIZE], int r)
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{
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return link_status[r - DP_LANE0_1_STATUS];
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@@ -242,7 +326,7 @@ static bool dp_channel_eq_ok(u8 link_status[DP_LINK_STATUS_SIZE],
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return true;
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}
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-static u8 dp_get_adjust_request_voltage(uint8_t link_status[DP_LINK_STATUS_SIZE],
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+static u8 dp_get_adjust_request_voltage(u8 link_status[DP_LINK_STATUS_SIZE],
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int lane)
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{
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@@ -255,7 +339,7 @@ static u8 dp_get_adjust_request_voltage(uint8_t link_status[DP_LINK_STATUS_SIZE]
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return ((l >> s) & 0x3) << DP_TRAIN_VOLTAGE_SWING_SHIFT;
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}
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-static u8 dp_get_adjust_request_pre_emphasis(uint8_t link_status[DP_LINK_STATUS_SIZE],
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+static u8 dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE],
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int lane)
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{
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int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1);
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@@ -267,22 +351,8 @@ static u8 dp_get_adjust_request_pre_emphasis(uint8_t link_status[DP_LINK_STATUS_
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return ((l >> s) & 0x3) << DP_TRAIN_PRE_EMPHASIS_SHIFT;
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}
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-/* XXX fix me -- chip specific */
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#define DP_VOLTAGE_MAX DP_TRAIN_VOLTAGE_SWING_1200
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-static u8 dp_pre_emphasis_max(u8 voltage_swing)
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-{
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- switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
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- case DP_TRAIN_VOLTAGE_SWING_400:
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- return DP_TRAIN_PRE_EMPHASIS_6;
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- case DP_TRAIN_VOLTAGE_SWING_600:
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- return DP_TRAIN_PRE_EMPHASIS_6;
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- case DP_TRAIN_VOLTAGE_SWING_800:
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|
|
- return DP_TRAIN_PRE_EMPHASIS_3_5;
|
|
|
- case DP_TRAIN_VOLTAGE_SWING_1200:
|
|
|
- default:
|
|
|
- return DP_TRAIN_PRE_EMPHASIS_0;
|
|
|
- }
|
|
|
-}
|
|
|
+#define DP_PRE_EMPHASIS_MAX DP_TRAIN_PRE_EMPHASIS_9_5
|
|
|
|
|
|
static void dp_get_adjust_train(u8 link_status[DP_LINK_STATUS_SIZE],
|
|
|
int lane_count,
|
|
@@ -308,10 +378,10 @@ static void dp_get_adjust_train(u8 link_status[DP_LINK_STATUS_SIZE],
|
|
|
}
|
|
|
|
|
|
if (v >= DP_VOLTAGE_MAX)
|
|
|
- v = DP_VOLTAGE_MAX | DP_TRAIN_MAX_SWING_REACHED;
|
|
|
+ v |= DP_TRAIN_MAX_SWING_REACHED;
|
|
|
|
|
|
- if (p >= dp_pre_emphasis_max(v))
|
|
|
- p = dp_pre_emphasis_max(v) | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
|
|
|
+ if (p >= DP_PRE_EMPHASIS_MAX)
|
|
|
+ p |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
|
|
|
|
|
|
DRM_DEBUG_KMS("using signal parameters: voltage %s pre_emph %s\n",
|
|
|
voltage_names[(v & DP_TRAIN_VOLTAGE_SWING_MASK) >> DP_TRAIN_VOLTAGE_SWING_SHIFT],
|
|
@@ -321,110 +391,109 @@ static void dp_get_adjust_train(u8 link_status[DP_LINK_STATUS_SIZE],
|
|
|
train_set[lane] = v | p;
|
|
|
}
|
|
|
|
|
|
-union aux_channel_transaction {
|
|
|
- PROCESS_AUX_CHANNEL_TRANSACTION_PS_ALLOCATION v1;
|
|
|
- PROCESS_AUX_CHANNEL_TRANSACTION_PARAMETERS_V2 v2;
|
|
|
-};
|
|
|
-
|
|
|
-/* radeon aux chan functions */
|
|
|
-bool radeon_process_aux_ch(struct radeon_i2c_chan *chan, u8 *req_bytes,
|
|
|
- int num_bytes, u8 *read_byte,
|
|
|
- u8 read_buf_len, u8 delay)
|
|
|
+/* convert bits per color to bits per pixel */
|
|
|
+/* get bpc from the EDID */
|
|
|
+static int convert_bpc_to_bpp(int bpc)
|
|
|
{
|
|
|
- struct drm_device *dev = chan->dev;
|
|
|
- struct radeon_device *rdev = dev->dev_private;
|
|
|
- union aux_channel_transaction args;
|
|
|
- int index = GetIndexIntoMasterTable(COMMAND, ProcessAuxChannelTransaction);
|
|
|
- unsigned char *base;
|
|
|
- int retry_count = 0;
|
|
|
-
|
|
|
- memset(&args, 0, sizeof(args));
|
|
|
-
|
|
|
- base = (unsigned char *)rdev->mode_info.atom_context->scratch;
|
|
|
-
|
|
|
-retry:
|
|
|
- memcpy(base, req_bytes, num_bytes);
|
|
|
-
|
|
|
- args.v1.lpAuxRequest = 0;
|
|
|
- args.v1.lpDataOut = 16;
|
|
|
- args.v1.ucDataOutLen = 0;
|
|
|
- args.v1.ucChannelID = chan->rec.i2c_id;
|
|
|
- args.v1.ucDelay = delay / 10;
|
|
|
- if (ASIC_IS_DCE4(rdev))
|
|
|
- args.v2.ucHPD_ID = chan->rec.hpd;
|
|
|
+ if (bpc == 0)
|
|
|
+ return 24;
|
|
|
+ else
|
|
|
+ return bpc * 3;
|
|
|
+}
|
|
|
|
|
|
- atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
|
|
|
+/* get the max pix clock supported by the link rate and lane num */
|
|
|
+static int dp_get_max_dp_pix_clock(int link_rate,
|
|
|
+ int lane_num,
|
|
|
+ int bpp)
|
|
|
+{
|
|
|
+ return (link_rate * lane_num * 8) / bpp;
|
|
|
+}
|
|
|
|
|
|
- if (args.v1.ucReplyStatus && !args.v1.ucDataOutLen) {
|
|
|
- if (args.v1.ucReplyStatus == 0x20 && retry_count++ < 10)
|
|
|
- goto retry;
|
|
|
- DRM_DEBUG_KMS("failed to get auxch %02x%02x %02x %02x 0x%02x %02x after %d retries\n",
|
|
|
- req_bytes[1], req_bytes[0], req_bytes[2], req_bytes[3],
|
|
|
- chan->rec.i2c_id, args.v1.ucReplyStatus, retry_count);
|
|
|
- return false;
|
|
|
+static int dp_get_max_link_rate(u8 dpcd[DP_DPCD_SIZE])
|
|
|
+{
|
|
|
+ switch (dpcd[DP_MAX_LINK_RATE]) {
|
|
|
+ case DP_LINK_BW_1_62:
|
|
|
+ default:
|
|
|
+ return 162000;
|
|
|
+ case DP_LINK_BW_2_7:
|
|
|
+ return 270000;
|
|
|
+ case DP_LINK_BW_5_4:
|
|
|
+ return 540000;
|
|
|
}
|
|
|
+}
|
|
|
|
|
|
- if (args.v1.ucDataOutLen && read_byte && read_buf_len) {
|
|
|
- if (read_buf_len < args.v1.ucDataOutLen) {
|
|
|
- DRM_ERROR("Buffer to small for return answer %d %d\n",
|
|
|
- read_buf_len, args.v1.ucDataOutLen);
|
|
|
- return false;
|
|
|
- }
|
|
|
- {
|
|
|
- int len = min(read_buf_len, args.v1.ucDataOutLen);
|
|
|
- memcpy(read_byte, base + 16, len);
|
|
|
- }
|
|
|
- }
|
|
|
- return true;
|
|
|
+static u8 dp_get_max_lane_number(u8 dpcd[DP_DPCD_SIZE])
|
|
|
+{
|
|
|
+ return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
|
|
|
}
|
|
|
|
|
|
-bool radeon_dp_aux_native_write(struct radeon_connector *radeon_connector, uint16_t address,
|
|
|
- uint8_t send_bytes, uint8_t *send)
|
|
|
+static u8 dp_get_dp_link_rate_coded(int link_rate)
|
|
|
{
|
|
|
- struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
|
|
|
- u8 msg[20];
|
|
|
- u8 msg_len, dp_msg_len;
|
|
|
- bool ret;
|
|
|
+ switch (link_rate) {
|
|
|
+ case 162000:
|
|
|
+ default:
|
|
|
+ return DP_LINK_BW_1_62;
|
|
|
+ case 270000:
|
|
|
+ return DP_LINK_BW_2_7;
|
|
|
+ case 540000:
|
|
|
+ return DP_LINK_BW_5_4;
|
|
|
+ }
|
|
|
+}
|
|
|
|
|
|
- dp_msg_len = 4;
|
|
|
- msg[0] = address;
|
|
|
- msg[1] = address >> 8;
|
|
|
- msg[2] = AUX_NATIVE_WRITE << 4;
|
|
|
- dp_msg_len += send_bytes;
|
|
|
- msg[3] = (dp_msg_len << 4) | (send_bytes - 1);
|
|
|
+/***** radeon specific DP functions *****/
|
|
|
|
|
|
- if (send_bytes > 16)
|
|
|
- return false;
|
|
|
+/* First get the min lane# when low rate is used according to pixel clock
|
|
|
+ * (prefer low rate), second check max lane# supported by DP panel,
|
|
|
+ * if the max lane# < low rate lane# then use max lane# instead.
|
|
|
+ */
|
|
|
+static int radeon_dp_get_dp_lane_number(struct drm_connector *connector,
|
|
|
+ u8 dpcd[DP_DPCD_SIZE],
|
|
|
+ int pix_clock)
|
|
|
+{
|
|
|
+ int bpp = convert_bpc_to_bpp(connector->display_info.bpc);
|
|
|
+ int max_link_rate = dp_get_max_link_rate(dpcd);
|
|
|
+ int max_lane_num = dp_get_max_lane_number(dpcd);
|
|
|
+ int lane_num;
|
|
|
+ int max_dp_pix_clock;
|
|
|
+
|
|
|
+ for (lane_num = 1; lane_num < max_lane_num; lane_num <<= 1) {
|
|
|
+ max_dp_pix_clock = dp_get_max_dp_pix_clock(max_link_rate, lane_num, bpp);
|
|
|
+ if (pix_clock <= max_dp_pix_clock)
|
|
|
+ break;
|
|
|
+ }
|
|
|
|
|
|
- memcpy(&msg[4], send, send_bytes);
|
|
|
- msg_len = 4 + send_bytes;
|
|
|
- ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus, msg, msg_len, NULL, 0, 0);
|
|
|
- return ret;
|
|
|
+ return lane_num;
|
|
|
}
|
|
|
|
|
|
-bool radeon_dp_aux_native_read(struct radeon_connector *radeon_connector, uint16_t address,
|
|
|
- uint8_t delay, uint8_t expected_bytes,
|
|
|
- uint8_t *read_p)
|
|
|
+static int radeon_dp_get_dp_link_clock(struct drm_connector *connector,
|
|
|
+ u8 dpcd[DP_DPCD_SIZE],
|
|
|
+ int pix_clock)
|
|
|
{
|
|
|
- struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
|
|
|
- u8 msg[20];
|
|
|
- u8 msg_len, dp_msg_len;
|
|
|
- bool ret = false;
|
|
|
- msg_len = 4;
|
|
|
- dp_msg_len = 4;
|
|
|
- msg[0] = address;
|
|
|
- msg[1] = address >> 8;
|
|
|
- msg[2] = AUX_NATIVE_READ << 4;
|
|
|
- msg[3] = (dp_msg_len) << 4;
|
|
|
- msg[3] |= expected_bytes - 1;
|
|
|
+ int bpp = convert_bpc_to_bpp(connector->display_info.bpc);
|
|
|
+ int lane_num, max_pix_clock;
|
|
|
+
|
|
|
+ if (radeon_connector_encoder_is_dp_bridge(connector))
|
|
|
+ return 270000;
|
|
|
+
|
|
|
+ lane_num = radeon_dp_get_dp_lane_number(connector, dpcd, pix_clock);
|
|
|
+ max_pix_clock = dp_get_max_dp_pix_clock(162000, lane_num, bpp);
|
|
|
+ if (pix_clock <= max_pix_clock)
|
|
|
+ return 162000;
|
|
|
+ max_pix_clock = dp_get_max_dp_pix_clock(270000, lane_num, bpp);
|
|
|
+ if (pix_clock <= max_pix_clock)
|
|
|
+ return 270000;
|
|
|
+ if (radeon_connector_is_dp12_capable(connector)) {
|
|
|
+ max_pix_clock = dp_get_max_dp_pix_clock(540000, lane_num, bpp);
|
|
|
+ if (pix_clock <= max_pix_clock)
|
|
|
+ return 540000;
|
|
|
+ }
|
|
|
|
|
|
- ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus, msg, msg_len, read_p, expected_bytes, delay);
|
|
|
- return ret;
|
|
|
+ return dp_get_max_link_rate(dpcd);
|
|
|
}
|
|
|
|
|
|
-/* radeon dp functions */
|
|
|
-static u8 radeon_dp_encoder_service(struct radeon_device *rdev, int action, int dp_clock,
|
|
|
- uint8_t ucconfig, uint8_t lane_num)
|
|
|
+static u8 radeon_dp_encoder_service(struct radeon_device *rdev,
|
|
|
+ int action, int dp_clock,
|
|
|
+ u8 ucconfig, u8 lane_num)
|
|
|
{
|
|
|
DP_ENCODER_SERVICE_PARAMETERS args;
|
|
|
int index = GetIndexIntoMasterTable(COMMAND, DPEncoderService);
|
|
@@ -454,60 +523,86 @@ bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector)
|
|
|
{
|
|
|
struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
|
|
|
u8 msg[25];
|
|
|
- int ret;
|
|
|
+ int ret, i;
|
|
|
|
|
|
- ret = radeon_dp_aux_native_read(radeon_connector, DP_DPCD_REV, 0, 8, msg);
|
|
|
- if (ret) {
|
|
|
+ ret = radeon_dp_aux_native_read(radeon_connector, DP_DPCD_REV, msg, 8, 0);
|
|
|
+ if (ret > 0) {
|
|
|
memcpy(dig_connector->dpcd, msg, 8);
|
|
|
- {
|
|
|
- int i;
|
|
|
- DRM_DEBUG_KMS("DPCD: ");
|
|
|
- for (i = 0; i < 8; i++)
|
|
|
- DRM_DEBUG_KMS("%02x ", msg[i]);
|
|
|
- DRM_DEBUG_KMS("\n");
|
|
|
- }
|
|
|
+ DRM_DEBUG_KMS("DPCD: ");
|
|
|
+ for (i = 0; i < 8; i++)
|
|
|
+ DRM_DEBUG_KMS("%02x ", msg[i]);
|
|
|
+ DRM_DEBUG_KMS("\n");
|
|
|
return true;
|
|
|
}
|
|
|
dig_connector->dpcd[0] = 0;
|
|
|
return false;
|
|
|
}
|
|
|
|
|
|
+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;
|
|
|
+ int panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE;
|
|
|
+
|
|
|
+ if (!ASIC_IS_DCE4(rdev))
|
|
|
+ return;
|
|
|
+
|
|
|
+ if (radeon_connector_encoder_is_dp_bridge(connector))
|
|
|
+ panel_mode = DP_PANEL_MODE_INTERNAL_DP1_MODE;
|
|
|
+
|
|
|
+ atombios_dig_encoder_setup(encoder,
|
|
|
+ ATOM_ENCODER_CMD_SETUP_PANEL_MODE,
|
|
|
+ panel_mode);
|
|
|
+}
|
|
|
+
|
|
|
void radeon_dp_set_link_config(struct drm_connector *connector,
|
|
|
struct drm_display_mode *mode)
|
|
|
{
|
|
|
- struct radeon_connector *radeon_connector;
|
|
|
+ struct radeon_connector *radeon_connector = to_radeon_connector(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);
|
|
|
+ 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);
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
-int radeon_dp_mode_valid_helper(struct radeon_connector *radeon_connector,
|
|
|
+int radeon_dp_mode_valid_helper(struct drm_connector *connector,
|
|
|
struct drm_display_mode *mode)
|
|
|
{
|
|
|
- struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
|
|
|
+ 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 dp_mode_valid(dig_connector->dpcd, mode->clock);
|
|
|
+ return MODE_OK;
|
|
|
}
|
|
|
|
|
|
-static bool atom_dp_get_link_status(struct radeon_connector *radeon_connector,
|
|
|
- u8 link_status[DP_LINK_STATUS_SIZE])
|
|
|
+static bool radeon_dp_get_link_status(struct radeon_connector *radeon_connector,
|
|
|
+ u8 link_status[DP_LINK_STATUS_SIZE])
|
|
|
{
|
|
|
int ret;
|
|
|
- ret = radeon_dp_aux_native_read(radeon_connector, DP_LANE0_1_STATUS, 100,
|
|
|
- DP_LINK_STATUS_SIZE, link_status);
|
|
|
- if (!ret) {
|
|
|
+ ret = radeon_dp_aux_native_read(radeon_connector, DP_LANE0_1_STATUS,
|
|
|
+ link_status, DP_LINK_STATUS_SIZE, 100);
|
|
|
+ if (ret <= 0) {
|
|
|
DRM_ERROR("displayport link status failed\n");
|
|
|
return false;
|
|
|
}
|
|
@@ -518,292 +613,309 @@ static bool atom_dp_get_link_status(struct radeon_connector *radeon_connector,
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
-bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector)
|
|
|
-{
|
|
|
- struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
|
|
|
+struct radeon_dp_link_train_info {
|
|
|
+ struct radeon_device *rdev;
|
|
|
+ struct drm_encoder *encoder;
|
|
|
+ struct drm_connector *connector;
|
|
|
+ struct radeon_connector *radeon_connector;
|
|
|
+ int enc_id;
|
|
|
+ int dp_clock;
|
|
|
+ int dp_lane_count;
|
|
|
+ int rd_interval;
|
|
|
+ bool tp3_supported;
|
|
|
+ u8 dpcd[8];
|
|
|
+ u8 train_set[4];
|
|
|
u8 link_status[DP_LINK_STATUS_SIZE];
|
|
|
+ u8 tries;
|
|
|
+};
|
|
|
|
|
|
- if (!atom_dp_get_link_status(radeon_connector, link_status))
|
|
|
- return false;
|
|
|
- if (dp_channel_eq_ok(link_status, dig_connector->dp_lane_count))
|
|
|
- return false;
|
|
|
- return true;
|
|
|
+static void radeon_dp_update_vs_emph(struct radeon_dp_link_train_info *dp_info)
|
|
|
+{
|
|
|
+ /* set the initial vs/emph on the source */
|
|
|
+ atombios_dig_transmitter_setup(dp_info->encoder,
|
|
|
+ ATOM_TRANSMITTER_ACTION_SETUP_VSEMPH,
|
|
|
+ 0, dp_info->train_set[0]); /* sets all lanes at once */
|
|
|
+
|
|
|
+ /* set the vs/emph on the sink */
|
|
|
+ radeon_dp_aux_native_write(dp_info->radeon_connector, DP_TRAINING_LANE0_SET,
|
|
|
+ dp_info->train_set, dp_info->dp_lane_count, 0);
|
|
|
}
|
|
|
|
|
|
-static void dp_set_power(struct radeon_connector *radeon_connector, u8 power_state)
|
|
|
+static void radeon_dp_set_tp(struct radeon_dp_link_train_info *dp_info, int tp)
|
|
|
{
|
|
|
- struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
|
|
|
+ int rtp = 0;
|
|
|
|
|
|
- if (dig_connector->dpcd[0] >= 0x11) {
|
|
|
- radeon_dp_aux_native_write(radeon_connector, DP_SET_POWER, 1,
|
|
|
- &power_state);
|
|
|
+ /* set training pattern on the source */
|
|
|
+ if (ASIC_IS_DCE4(dp_info->rdev)) {
|
|
|
+ switch (tp) {
|
|
|
+ case DP_TRAINING_PATTERN_1:
|
|
|
+ rtp = ATOM_ENCODER_CMD_DP_LINK_TRAINING_PATTERN1;
|
|
|
+ break;
|
|
|
+ case DP_TRAINING_PATTERN_2:
|
|
|
+ rtp = ATOM_ENCODER_CMD_DP_LINK_TRAINING_PATTERN2;
|
|
|
+ break;
|
|
|
+ case DP_TRAINING_PATTERN_3:
|
|
|
+ rtp = ATOM_ENCODER_CMD_DP_LINK_TRAINING_PATTERN3;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ atombios_dig_encoder_setup(dp_info->encoder, rtp, 0);
|
|
|
+ } else {
|
|
|
+ switch (tp) {
|
|
|
+ case DP_TRAINING_PATTERN_1:
|
|
|
+ rtp = 0;
|
|
|
+ break;
|
|
|
+ case DP_TRAINING_PATTERN_2:
|
|
|
+ rtp = 1;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ radeon_dp_encoder_service(dp_info->rdev, ATOM_DP_ACTION_TRAINING_PATTERN_SEL,
|
|
|
+ dp_info->dp_clock, dp_info->enc_id, rtp);
|
|
|
}
|
|
|
-}
|
|
|
|
|
|
-static void dp_set_downspread(struct radeon_connector *radeon_connector, u8 downspread)
|
|
|
-{
|
|
|
- radeon_dp_aux_native_write(radeon_connector, DP_DOWNSPREAD_CTRL, 1,
|
|
|
- &downspread);
|
|
|
+ /* enable training pattern on the sink */
|
|
|
+ radeon_write_dpcd_reg(dp_info->radeon_connector, DP_TRAINING_PATTERN_SET, tp);
|
|
|
}
|
|
|
|
|
|
-static void dp_set_link_bw_lanes(struct radeon_connector *radeon_connector,
|
|
|
- u8 link_configuration[DP_LINK_CONFIGURATION_SIZE])
|
|
|
+static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info)
|
|
|
{
|
|
|
- radeon_dp_aux_native_write(radeon_connector, DP_LINK_BW_SET, 2,
|
|
|
- link_configuration);
|
|
|
-}
|
|
|
+ u8 tmp;
|
|
|
|
|
|
-static void dp_update_dpvs_emph(struct radeon_connector *radeon_connector,
|
|
|
- struct drm_encoder *encoder,
|
|
|
- u8 train_set[4])
|
|
|
-{
|
|
|
- struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
|
|
|
- int i;
|
|
|
+ /* power up the sink */
|
|
|
+ if (dp_info->dpcd[0] >= 0x11)
|
|
|
+ radeon_write_dpcd_reg(dp_info->radeon_connector,
|
|
|
+ DP_SET_POWER, DP_SET_POWER_D0);
|
|
|
+
|
|
|
+ /* possibly enable downspread on the sink */
|
|
|
+ if (dp_info->dpcd[3] & 0x1)
|
|
|
+ radeon_write_dpcd_reg(dp_info->radeon_connector,
|
|
|
+ DP_DOWNSPREAD_CTRL, DP_SPREAD_AMP_0_5);
|
|
|
+ else
|
|
|
+ radeon_write_dpcd_reg(dp_info->radeon_connector,
|
|
|
+ DP_DOWNSPREAD_CTRL, 0);
|
|
|
|
|
|
- for (i = 0; i < dig_connector->dp_lane_count; i++)
|
|
|
- atombios_dig_transmitter_setup(encoder,
|
|
|
- ATOM_TRANSMITTER_ACTION_SETUP_VSEMPH,
|
|
|
- i, train_set[i]);
|
|
|
+ radeon_dp_set_panel_mode(dp_info->encoder, dp_info->connector);
|
|
|
|
|
|
- radeon_dp_aux_native_write(radeon_connector, DP_TRAINING_LANE0_SET,
|
|
|
- dig_connector->dp_lane_count, train_set);
|
|
|
-}
|
|
|
+ /* set the lane count on the sink */
|
|
|
+ tmp = dp_info->dp_lane_count;
|
|
|
+ if (dp_info->dpcd[0] >= 0x11)
|
|
|
+ tmp |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
|
|
|
+ radeon_write_dpcd_reg(dp_info->radeon_connector, DP_LANE_COUNT_SET, tmp);
|
|
|
|
|
|
-static void dp_set_training(struct radeon_connector *radeon_connector,
|
|
|
- u8 training)
|
|
|
-{
|
|
|
- radeon_dp_aux_native_write(radeon_connector, DP_TRAINING_PATTERN_SET,
|
|
|
- 1, &training);
|
|
|
-}
|
|
|
+ /* set the link rate on the sink */
|
|
|
+ tmp = dp_get_dp_link_rate_coded(dp_info->dp_clock);
|
|
|
+ radeon_write_dpcd_reg(dp_info->radeon_connector, DP_LINK_BW_SET, tmp);
|
|
|
|
|
|
-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;
|
|
|
+ /* start training on the source */
|
|
|
+ if (ASIC_IS_DCE4(dp_info->rdev))
|
|
|
+ atombios_dig_encoder_setup(dp_info->encoder,
|
|
|
+ ATOM_ENCODER_CMD_DP_LINK_TRAINING_START, 0);
|
|
|
+ else
|
|
|
+ radeon_dp_encoder_service(dp_info->rdev, ATOM_DP_ACTION_TRAINING_START,
|
|
|
+ dp_info->dp_clock, dp_info->enc_id, 0);
|
|
|
|
|
|
- if ((connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) &&
|
|
|
- (connector->connector_type != DRM_MODE_CONNECTOR_eDP))
|
|
|
- return;
|
|
|
+ /* disable the training pattern on the sink */
|
|
|
+ radeon_write_dpcd_reg(dp_info->radeon_connector,
|
|
|
+ DP_TRAINING_PATTERN_SET,
|
|
|
+ DP_TRAINING_PATTERN_DISABLE);
|
|
|
|
|
|
- if (!radeon_encoder->enc_priv)
|
|
|
- return;
|
|
|
- dig = radeon_encoder->enc_priv;
|
|
|
+ return 0;
|
|
|
+}
|
|
|
|
|
|
- radeon_connector = to_radeon_connector(connector);
|
|
|
- if (!radeon_connector->con_priv)
|
|
|
- return;
|
|
|
- dig_connector = radeon_connector->con_priv;
|
|
|
+static int radeon_dp_link_train_finish(struct radeon_dp_link_train_info *dp_info)
|
|
|
+{
|
|
|
+ udelay(400);
|
|
|
|
|
|
- if (dig->dig_encoder)
|
|
|
- enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER;
|
|
|
- else
|
|
|
- enc_id |= ATOM_DP_CONFIG_DIG1_ENCODER;
|
|
|
- if (dig->linkb)
|
|
|
- enc_id |= ATOM_DP_CONFIG_LINK_B;
|
|
|
- else
|
|
|
- enc_id |= ATOM_DP_CONFIG_LINK_A;
|
|
|
+ /* disable the training pattern on the sink */
|
|
|
+ radeon_write_dpcd_reg(dp_info->radeon_connector,
|
|
|
+ DP_TRAINING_PATTERN_SET,
|
|
|
+ DP_TRAINING_PATTERN_DISABLE);
|
|
|
|
|
|
- memset(link_configuration, 0, DP_LINK_CONFIGURATION_SIZE);
|
|
|
- if (dig_connector->dp_clock == 270000)
|
|
|
- link_configuration[0] = DP_LINK_BW_2_7;
|
|
|
+ /* disable the training pattern on the source */
|
|
|
+ if (ASIC_IS_DCE4(dp_info->rdev))
|
|
|
+ atombios_dig_encoder_setup(dp_info->encoder,
|
|
|
+ ATOM_ENCODER_CMD_DP_LINK_TRAINING_COMPLETE, 0);
|
|
|
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;
|
|
|
+ radeon_dp_encoder_service(dp_info->rdev, ATOM_DP_ACTION_TRAINING_COMPLETE,
|
|
|
+ dp_info->dp_clock, dp_info->enc_id, 0);
|
|
|
|
|
|
- /* 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);
|
|
|
- if (ASIC_IS_DCE4(rdev)) {
|
|
|
- /* start training on the source */
|
|
|
- atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_LINK_TRAINING_START);
|
|
|
- /* set training pattern 1 on the source */
|
|
|
- atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_LINK_TRAINING_PATTERN1);
|
|
|
- } else {
|
|
|
- /* 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);
|
|
|
- }
|
|
|
+ return 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);
|
|
|
+static int radeon_dp_link_train_cr(struct radeon_dp_link_train_info *dp_info)
|
|
|
+{
|
|
|
+ bool clock_recovery;
|
|
|
+ u8 voltage;
|
|
|
+ int i;
|
|
|
|
|
|
- dp_update_dpvs_emph(radeon_connector, encoder, train_set);
|
|
|
+ radeon_dp_set_tp(dp_info, DP_TRAINING_PATTERN_1);
|
|
|
+ memset(dp_info->train_set, 0, 4);
|
|
|
+ radeon_dp_update_vs_emph(dp_info);
|
|
|
+
|
|
|
+ udelay(400);
|
|
|
|
|
|
/* clock recovery loop */
|
|
|
clock_recovery = false;
|
|
|
- tries = 0;
|
|
|
+ dp_info->tries = 0;
|
|
|
voltage = 0xff;
|
|
|
- for (;;) {
|
|
|
- udelay(100);
|
|
|
- if (!atom_dp_get_link_status(radeon_connector, link_status))
|
|
|
+ while (1) {
|
|
|
+ if (dp_info->rd_interval == 0)
|
|
|
+ udelay(100);
|
|
|
+ else
|
|
|
+ mdelay(dp_info->rd_interval * 4);
|
|
|
+
|
|
|
+ if (!radeon_dp_get_link_status(dp_info->radeon_connector, dp_info->link_status))
|
|
|
break;
|
|
|
|
|
|
- if (dp_clock_recovery_ok(link_status, dig_connector->dp_lane_count)) {
|
|
|
+ if (dp_clock_recovery_ok(dp_info->link_status, dp_info->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)
|
|
|
+ for (i = 0; i < dp_info->dp_lane_count; i++) {
|
|
|
+ if ((dp_info->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0)
|
|
|
break;
|
|
|
}
|
|
|
- if (i == dig_connector->dp_lane_count) {
|
|
|
+ if (i == dp_info->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) {
|
|
|
+ if ((dp_info->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) {
|
|
|
+ ++dp_info->tries;
|
|
|
+ if (dp_info->tries == 5) {
|
|
|
DRM_ERROR("clock recovery tried 5 times\n");
|
|
|
break;
|
|
|
}
|
|
|
} else
|
|
|
- tries = 0;
|
|
|
+ dp_info->tries = 0;
|
|
|
|
|
|
- voltage = train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK;
|
|
|
+ voltage = dp_info->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);
|
|
|
+ dp_get_adjust_train(dp_info->link_status, dp_info->dp_lane_count, dp_info->train_set);
|
|
|
+
|
|
|
+ radeon_dp_update_vs_emph(dp_info);
|
|
|
}
|
|
|
- if (!clock_recovery)
|
|
|
+ if (!clock_recovery) {
|
|
|
DRM_ERROR("clock recovery failed\n");
|
|
|
- else
|
|
|
+ return -1;
|
|
|
+ } else {
|
|
|
DRM_DEBUG_KMS("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_info->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK,
|
|
|
+ (dp_info->train_set[0] & DP_TRAIN_PRE_EMPHASIS_MASK) >>
|
|
|
DP_TRAIN_PRE_EMPHASIS_SHIFT);
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+}
|
|
|
|
|
|
+static int radeon_dp_link_train_ce(struct radeon_dp_link_train_info *dp_info)
|
|
|
+{
|
|
|
+ bool channel_eq;
|
|
|
|
|
|
- /* set training pattern 2 on the sink */
|
|
|
- dp_set_training(radeon_connector, DP_TRAINING_PATTERN_2);
|
|
|
- /* set training pattern 2 on the source */
|
|
|
- if (ASIC_IS_DCE4(rdev))
|
|
|
- atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_LINK_TRAINING_PATTERN2);
|
|
|
+ if (dp_info->tp3_supported)
|
|
|
+ radeon_dp_set_tp(dp_info, DP_TRAINING_PATTERN_3);
|
|
|
else
|
|
|
- radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_PATTERN_SEL,
|
|
|
- dig_connector->dp_clock, enc_id, 1);
|
|
|
+ radeon_dp_set_tp(dp_info, DP_TRAINING_PATTERN_2);
|
|
|
|
|
|
/* channel equalization loop */
|
|
|
- tries = 0;
|
|
|
+ dp_info->tries = 0;
|
|
|
channel_eq = false;
|
|
|
- for (;;) {
|
|
|
- udelay(400);
|
|
|
- if (!atom_dp_get_link_status(radeon_connector, link_status))
|
|
|
+ while (1) {
|
|
|
+ if (dp_info->rd_interval == 0)
|
|
|
+ udelay(400);
|
|
|
+ else
|
|
|
+ mdelay(dp_info->rd_interval * 4);
|
|
|
+
|
|
|
+ if (!radeon_dp_get_link_status(dp_info->radeon_connector, dp_info->link_status))
|
|
|
break;
|
|
|
|
|
|
- if (dp_channel_eq_ok(link_status, dig_connector->dp_lane_count)) {
|
|
|
+ if (dp_channel_eq_ok(dp_info->link_status, dp_info->dp_lane_count)) {
|
|
|
channel_eq = true;
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
/* Try 5 times */
|
|
|
- if (tries > 5) {
|
|
|
+ if (dp_info->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);
|
|
|
+ dp_get_adjust_train(dp_info->link_status, dp_info->dp_lane_count, dp_info->train_set);
|
|
|
|
|
|
- tries++;
|
|
|
+ radeon_dp_update_vs_emph(dp_info);
|
|
|
+ dp_info->tries++;
|
|
|
}
|
|
|
|
|
|
- if (!channel_eq)
|
|
|
+ if (!channel_eq) {
|
|
|
DRM_ERROR("channel eq failed\n");
|
|
|
- else
|
|
|
+ return -1;
|
|
|
+ } else {
|
|
|
DRM_DEBUG_KMS("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_info->train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK,
|
|
|
+ (dp_info->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);
|
|
|
-
|
|
|
- /* disable the training pattern on the source */
|
|
|
- if (ASIC_IS_DCE4(rdev))
|
|
|
- atombios_dig_encoder_setup(encoder, ATOM_ENCODER_CMD_DP_LINK_TRAINING_COMPLETE);
|
|
|
- else
|
|
|
- radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_COMPLETE,
|
|
|
- dig_connector->dp_clock, enc_id, 0);
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
-int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
|
|
|
- uint8_t write_byte, uint8_t *read_byte)
|
|
|
+void radeon_dp_link_train(struct drm_encoder *encoder,
|
|
|
+ struct drm_connector *connector)
|
|
|
{
|
|
|
- struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
|
|
|
- struct radeon_i2c_chan *auxch = (struct radeon_i2c_chan *)adapter;
|
|
|
- int ret = 0;
|
|
|
- uint16_t address = algo_data->address;
|
|
|
- uint8_t msg[5];
|
|
|
- uint8_t reply[2];
|
|
|
- int msg_len, dp_msg_len;
|
|
|
- int reply_bytes;
|
|
|
-
|
|
|
- /* Set up the command byte */
|
|
|
- if (mode & MODE_I2C_READ)
|
|
|
- msg[2] = AUX_I2C_READ << 4;
|
|
|
- else
|
|
|
- msg[2] = AUX_I2C_WRITE << 4;
|
|
|
-
|
|
|
- if (!(mode & MODE_I2C_STOP))
|
|
|
- msg[2] |= AUX_I2C_MOT << 4;
|
|
|
+ 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;
|
|
|
+ u8 tmp;
|
|
|
|
|
|
- msg[0] = address;
|
|
|
- msg[1] = address >> 8;
|
|
|
+ if (!radeon_encoder->enc_priv)
|
|
|
+ return;
|
|
|
+ dig = radeon_encoder->enc_priv;
|
|
|
|
|
|
- reply_bytes = 1;
|
|
|
+ radeon_connector = to_radeon_connector(connector);
|
|
|
+ if (!radeon_connector->con_priv)
|
|
|
+ return;
|
|
|
+ dig_connector = radeon_connector->con_priv;
|
|
|
|
|
|
- msg_len = 4;
|
|
|
- dp_msg_len = 3;
|
|
|
- switch (mode) {
|
|
|
- case MODE_I2C_WRITE:
|
|
|
- msg[4] = write_byte;
|
|
|
- msg_len++;
|
|
|
- dp_msg_len += 2;
|
|
|
- break;
|
|
|
- case MODE_I2C_READ:
|
|
|
- dp_msg_len += 1;
|
|
|
- break;
|
|
|
- default:
|
|
|
- break;
|
|
|
- }
|
|
|
+ if ((dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_DISPLAYPORT) &&
|
|
|
+ (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_eDP))
|
|
|
+ return;
|
|
|
|
|
|
- msg[3] = (dp_msg_len) << 4;
|
|
|
- ret = radeon_process_aux_ch(auxch, msg, msg_len, reply, reply_bytes, 0);
|
|
|
+ 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;
|
|
|
|
|
|
- if (ret) {
|
|
|
- if (read_byte)
|
|
|
- *read_byte = reply[0];
|
|
|
- return reply_bytes;
|
|
|
- }
|
|
|
- return -EREMOTEIO;
|
|
|
+ dp_info.rd_interval = radeon_read_dpcd_reg(radeon_connector, DP_TRAINING_AUX_RD_INTERVAL);
|
|
|
+ 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, 8);
|
|
|
+ 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;
|
|
|
}
|
|
|
-
|