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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-11-23 13:39:21 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-12-14 08:07:45 +0200 |
| commit | 97e0a21ce835603b81a5c11de5bf45820194db10 (patch) | |
| tree | 4541be8146a156fa282e8b7d2634b2112f9735ea /drivers/thunderbolt | |
| parent | 09dc766bd60b7bc6a2742aaf2410e434f458893c (diff) | |
| download | linux-97e0a21ce835603b81a5c11de5bf45820194db10.tar.gz linux-97e0a21ce835603b81a5c11de5bf45820194db10.tar.xz | |
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>
Diffstat (limited to 'drivers/thunderbolt')
| -rw-r--r-- | drivers/thunderbolt/tunnel.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/thunderbolt/tunnel.c b/drivers/thunderbolt/tunnel.c index 8d45cb4f04ab..6297c85dea06 100644 --- a/drivers/thunderbolt/tunnel.c +++ b/drivers/thunderbolt/tunnel.c @@ -1067,8 +1067,7 @@ static int tb_dp_alloc_bandwidth(struct tb_tunnel *tunnel, int *alloc_up, return 0; } -static int tb_dp_read_dprx(struct tb_tunnel *tunnel, u32 *rate, u32 *lanes, - int timeout_msec) +static int tb_dp_wait_dprx(struct tb_tunnel *tunnel, int timeout_msec) { ktime_t timeout = ktime_add_ms(ktime_get(), timeout_msec); struct tb_port *in = tunnel->src_port; @@ -1087,15 +1086,13 @@ static int tb_dp_read_dprx(struct tb_tunnel *tunnel, u32 *rate, u32 *lanes, return ret; if (val & DP_COMMON_CAP_DPRX_DONE) { - *rate = tb_dp_cap_get_rate(val); - *lanes = tb_dp_cap_get_lanes(val); - tb_tunnel_dbg(tunnel, "DPRX read done\n"); return 0; } usleep_range(100, 150); } while (ktime_before(ktime_get(), timeout)); + tb_tunnel_dbg(tunnel, "DPRX read timeout\n"); return -ETIMEDOUT; } @@ -1110,6 +1107,7 @@ static int tb_dp_read_cap(struct tb_tunnel *tunnel, unsigned int cap, u32 *rate, switch (cap) { case DP_LOCAL_CAP: case DP_REMOTE_CAP: + case DP_COMMON_CAP: break; default: @@ -1182,7 +1180,7 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up, * reduced one). Otherwise return the remote (possibly * reduced) caps. */ - ret = tb_dp_read_dprx(tunnel, &rate, &lanes, 150); + ret = tb_dp_wait_dprx(tunnel, 150); if (ret) { if (ret == -ETIMEDOUT) ret = tb_dp_read_cap(tunnel, DP_REMOTE_CAP, @@ -1190,6 +1188,9 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up, if (ret) return ret; } + ret = tb_dp_read_cap(tunnel, DP_COMMON_CAP, &rate, &lanes); + if (ret) + return ret; } else if (sw->generation >= 2) { ret = tb_dp_read_cap(tunnel, DP_REMOTE_CAP, &rate, &lanes); if (ret) |