diff options
| author | Andrey Gusakov <andrey.gusakov@cogentembedded.com> | 2017-11-07 19:56:24 +0300 |
|---|---|---|
| committer | Andrzej Hajda <a.hajda@samsung.com> | 2017-11-30 09:56:18 +0300 |
| commit | 4dbd6c03fbf88299c573d676838896c6e06aade2 (patch) | |
| tree | 886f5cdb1003b80e7f00ffe977c47eaead8f06d1 /drivers/gpu | |
| parent | 9217c1abbc145a77d65c476cf2004a3df02104c7 (diff) | |
| download | linux-4dbd6c03fbf88299c573d676838896c6e06aade2.tar.xz | |
drm/bridge: tc358767: fix 1-lane behavior
Use drm_dp_channel_eq_ok helper
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1510073785-16108-7-git-send-email-andrey.gusakov@cogentembedded.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/bridge/tc358767.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 24f495bf0567..8636e7eeb731 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -819,8 +819,6 @@ static int tc_main_link_setup(struct tc_data *tc) unsigned int rate; u32 dp_phy_ctrl; int timeout; - bool aligned; - bool ready; u32 value; int ret; u8 tmp[8]; @@ -965,16 +963,15 @@ static int tc_main_link_setup(struct tc_data *tc) ret = drm_dp_dpcd_read_link_status(aux, tmp + 2); if (ret < 0) goto err_dpcd_read; - ready = (tmp[2] == ((DP_CHANNEL_EQ_BITS << 4) | /* Lane1 */ - DP_CHANNEL_EQ_BITS)); /* Lane0 */ - aligned = tmp[4] & DP_INTERLANE_ALIGN_DONE; - } while ((--timeout) && !(ready && aligned)); + } while ((--timeout) && + !(drm_dp_channel_eq_ok(tmp + 2, tc->link.base.num_lanes))); if (timeout == 0) { /* Read DPCD 0x200-0x201 */ ret = drm_dp_dpcd_read(aux, DP_SINK_COUNT, tmp, 2); if (ret < 0) goto err_dpcd_read; + dev_err(dev, "channel(s) EQ not ok\n"); dev_info(dev, "0x0200 SINK_COUNT: 0x%02x\n", tmp[0]); dev_info(dev, "0x0201 DEVICE_SERVICE_IRQ_VECTOR: 0x%02x\n", tmp[1]); @@ -985,10 +982,6 @@ static int tc_main_link_setup(struct tc_data *tc) dev_info(dev, "0x0206 ADJUST_REQUEST_LANE0_1: 0x%02x\n", tmp[6]); - if (!ready) - dev_err(dev, "Lane0/1 not ready\n"); - if (!aligned) - dev_err(dev, "Lane0/1 not aligned\n"); return -EAGAIN; } |