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thunderbolt: Use tb_dp_read_cap() to read DP_COMMON_CAP as well
There is no point doing this separately as the register layout is the same. For this reason rename tb_dp_read_dprx() to tb_dp_wait_dprx() and call tb_dp_read_cap() instead. While there add debug log if the DPRX capability read times out. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
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parent
09dc766bd6
commit
97e0a21ce8
1 changed files with 7 additions and 6 deletions
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@ -1067,8 +1067,7 @@ static int tb_dp_alloc_bandwidth(struct tb_tunnel *tunnel, int *alloc_up,
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return 0;
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}
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static int tb_dp_read_dprx(struct tb_tunnel *tunnel, u32 *rate, u32 *lanes,
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int timeout_msec)
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static int tb_dp_wait_dprx(struct tb_tunnel *tunnel, int timeout_msec)
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{
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ktime_t timeout = ktime_add_ms(ktime_get(), timeout_msec);
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struct tb_port *in = tunnel->src_port;
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@ -1087,15 +1086,13 @@ static int tb_dp_read_dprx(struct tb_tunnel *tunnel, u32 *rate, u32 *lanes,
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return ret;
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if (val & DP_COMMON_CAP_DPRX_DONE) {
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*rate = tb_dp_cap_get_rate(val);
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*lanes = tb_dp_cap_get_lanes(val);
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tb_tunnel_dbg(tunnel, "DPRX read done\n");
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return 0;
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}
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usleep_range(100, 150);
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} while (ktime_before(ktime_get(), timeout));
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tb_tunnel_dbg(tunnel, "DPRX read timeout\n");
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return -ETIMEDOUT;
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}
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@ -1110,6 +1107,7 @@ static int tb_dp_read_cap(struct tb_tunnel *tunnel, unsigned int cap, u32 *rate,
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switch (cap) {
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case DP_LOCAL_CAP:
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case DP_REMOTE_CAP:
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case DP_COMMON_CAP:
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break;
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default:
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@ -1182,7 +1180,7 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
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* reduced one). Otherwise return the remote (possibly
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* reduced) caps.
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*/
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ret = tb_dp_read_dprx(tunnel, &rate, &lanes, 150);
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ret = tb_dp_wait_dprx(tunnel, 150);
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if (ret) {
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if (ret == -ETIMEDOUT)
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ret = tb_dp_read_cap(tunnel, DP_REMOTE_CAP,
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@ -1190,6 +1188,9 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
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if (ret)
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return ret;
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}
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ret = tb_dp_read_cap(tunnel, DP_COMMON_CAP, &rate, &lanes);
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if (ret)
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return ret;
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} else if (sw->generation >= 2) {
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ret = tb_dp_read_cap(tunnel, DP_REMOTE_CAP, &rate, &lanes);
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if (ret)
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