diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/ci_dpm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/ci_dpm.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c index c97fbb2ab48b..7e1b04dc5593 100644 --- a/drivers/gpu/drm/radeon/ci_dpm.c +++ b/drivers/gpu/drm/radeon/ci_dpm.c @@ -184,6 +184,7 @@ static int ci_set_overdrive_target_tdp(struct radeon_device *rdev, u32 target_tdp); static int ci_update_uvd_dpm(struct radeon_device *rdev, bool gate); +static PPSMC_Result ci_send_msg_to_smc(struct radeon_device *rdev, PPSMC_Msg msg); static PPSMC_Result ci_send_msg_to_smc_with_parameter(struct radeon_device *rdev, PPSMC_Msg msg, u32 parameter); @@ -1651,6 +1652,27 @@ static int ci_notify_hw_of_power_source(struct radeon_device *rdev, } #endif +static PPSMC_Result ci_send_msg_to_smc(struct radeon_device *rdev, PPSMC_Msg msg) +{ + u32 tmp; + int i; + + if (!ci_is_smc_running(rdev)) + return PPSMC_Result_Failed; + + WREG32(SMC_MESSAGE_0, msg); + + for (i = 0; i < rdev->usec_timeout; i++) { + tmp = RREG32(SMC_RESP_0); + if (tmp != 0) + break; + udelay(1); + } + tmp = RREG32(SMC_RESP_0); + + return (PPSMC_Result)tmp; +} + static PPSMC_Result ci_send_msg_to_smc_with_parameter(struct radeon_device *rdev, PPSMC_Msg msg, u32 parameter) { |