diff options
| author | hersen wu <hersenxs.wu@amd.com> | 2019-03-13 23:19:17 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-06-22 17:34:08 +0300 |
| commit | 0fcf90d1775e09fbee2afe40a43f6400c103ac55 (patch) | |
| tree | a6fa6a432e1bf9a2f6e8c244ec0abfd5e642c0ce /drivers | |
| parent | 96cb7cf13d8530099c256c053648ad576588c387 (diff) | |
| download | linux-0fcf90d1775e09fbee2afe40a43f6400c103ac55.tar.xz | |
drm/amd/display: do not need otg lock if otg is not active
[todo] need find caller bug. tempooariy fix
Signed-off-by: hersen wu <hersenxs.wu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c index b3fc71648d16..a546c2bc9129 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -584,6 +584,13 @@ uint32_t optc1_get_vblank_counter(struct timing_generator *optc) void optc1_lock(struct timing_generator *optc) { struct optc *optc1 = DCN10TG_FROM_TG(optc); + uint32_t regval = 0; + + regval = REG_READ(OTG_CONTROL); + + /* otg is not running, do not need to be locked */ + if ((regval & 0x1) == 0x0) + return; REG_SET(OTG_GLOBAL_CONTROL0, 0, OTG_MASTER_UPDATE_LOCK_SEL, optc->inst); @@ -591,10 +598,12 @@ void optc1_lock(struct timing_generator *optc) OTG_MASTER_UPDATE_LOCK, 1); /* Should be fast, status does not update on maximus */ - if (optc->ctx->dce_environment != DCE_ENV_FPGA_MAXIMUS) + if (optc->ctx->dce_environment != DCE_ENV_FPGA_MAXIMUS) { + REG_WAIT(OTG_MASTER_UPDATE_LOCK, UPDATE_LOCK_STATUS, 1, 1, 10); + } } void optc1_unlock(struct timing_generator *optc) |