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| author |   Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> | 2017-11-02 14:55:14 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2017-12-06 12:47:32 -0500 |
| commit | 42cf181b59b8e3cc75485fa493bd0e812f44a74b (patch) | |
| tree | 62ea48f9bfb9f6ed1ce81d3429d1d57752efa0ae /drivers/gpu/drm/amd/display/dc/dc_helper.c | |
| parent | drm/amd/display: remove unnecessary waits in dcn10 (diff) | |
| download | linux-dev-42cf181b59b8e3cc75485fa493bd0e812f44a74b.tar.xz linux-dev-42cf181b59b8e3cc75485fa493bd0e812f44a74b.zip | |
drm/amd/display: add warning on long reg_wait
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_helper.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_helper.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_helper.c b/drivers/gpu/drm/amd/display/dc/dc_helper.c index 0d84b2a1ccfd..c584252669fd 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_helper.c +++ b/drivers/gpu/drm/amd/display/dc/dc_helper.c @@ -156,8 +156,13 @@ uint32_t generic_reg_wait(const struct dc_context *ctx, field_value = get_reg_field_value_ex(reg_val, mask, shift); - if (field_value == condition_value) + if (field_value == condition_value) { + if (i * delay_between_poll_us > 1000) + dm_output_to_console("REG_WAIT taking a while: %dms in %s line:%d\n", + delay_between_poll_us * i / 1000, + func_name, line); return reg_val; + } } dm_error("REG_WAIT timeout %dus * %d tries - %s line:%d\n", |