diff options
| author | Charlene Liu <charlene.liu@amd.com> | 2017-08-24 17:12:48 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 18:17:15 -0400 |
| commit | ceda4e980058316531a1a6b72797d9068ddacd02 (patch) | |
| tree | 07b07608a929c7aae929203db58f15b35ac1ad22 /drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c | |
| parent | 4ed4e51b19496c4d160f3ca368d9ff5dd3e4a5b9 (diff) | |
drm/amd/display: add aux arbitration logic
Signed-off-by: Charlene Liu <charlene.liu@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/i2caux/aux_engine.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c b/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c index 667660f3fa26..3c9608ce94b8 100644 --- a/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c +++ b/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c @@ -69,6 +69,12 @@ bool dal_aux_engine_acquire( struct aux_engine *aux_engine = FROM_ENGINE(engine); enum gpio_result result; + if (aux_engine->funcs->is_engine_available) { + /*check whether SW could use the engine*/ + if (!aux_engine->funcs->is_engine_available(aux_engine)) { + return false; + } + } result = dal_ddc_open(ddc, GPIO_MODE_HARDWARE, GPIO_DDC_CONFIG_TYPE_MODE_AUX); |