diff options
| author | Charlene Liu <charlene.liu@amd.com> | 2019-04-15 16:17:59 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-06-22 09:34:11 -0500 |
| commit | c703e753c8d150295335ff9671d5573310048831 (patch) | |
| tree | 38091d1b4a68fd5927c7f7c8b9a1e21edbbf59e5 /drivers/gpu/drm/amd | |
| parent | b01473e919fa4dd32df696ebfc899c8ba6e817a8 (diff) | |
drm/amd/display: add SW_USE_I2C_REG request.
[Description]
This is for DC_I2c arbitration use between HW use/SW use and DMCU use.
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c index d658b862430a..b2786a704708 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c @@ -306,6 +306,8 @@ static bool setup_engine( #if defined(CONFIG_DRM_AMD_DC_DCN2_0) uint32_t reset_length = 0; #endif + /* we have checked I2c not used by DMCU, set SW use I2C REQ to 1 to indicate SW using it*/ + REG_UPDATE(DC_I2C_ARBITRATION, DC_I2C_SW_USE_I2C_REG_REQ, 1); /* we have checked I2c not used by DMCU, set SW use I2C REQ to 1 to indicate SW using it*/ REG_UPDATE(DC_I2C_ARBITRATION, DC_I2C_SW_USE_I2C_REG_REQ, 1); |