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path: root/drivers/gpu/drm/radeon/ci_dpm.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/ci_dpm.c')
-rw-r--r--drivers/gpu/drm/radeon/ci_dpm.c22
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)
{