drm/amd/powerplay: ack the SMUToHost interrupt on receive V2

There will be no further interrupt without proper ack
for current one.

V2: fix typo to really set ACK bit only

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index ae0361e..aa76c2c 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -1561,6 +1561,7 @@ static int smu_v11_0_irq_process(struct amdgpu_device *adev,
         * events for SMCToHost interrupt.
         */
        uint32_t ctxid = entry->src_data[0];
+       uint32_t data;
 
        if (client_id == SOC15_IH_CLIENTID_THM) {
                switch (src_id) {
@@ -1590,6 +1591,11 @@ static int smu_v11_0_irq_process(struct amdgpu_device *adev,
                orderly_poweroff(true);
        } else if (client_id == SOC15_IH_CLIENTID_MP1) {
                if (src_id == 0xfe) {
+                       /* ACK SMUToHost interrupt */
+                       data = RREG32_SOC15(MP1, 0, mmMP1_SMN_IH_SW_INT_CTRL);
+                       data = REG_SET_FIELD(data, MP1_SMN_IH_SW_INT_CTRL, INT_ACK, 1);
+                       WREG32_SOC15(MP1, 0, mmMP1_SMN_IH_SW_INT_CTRL, data);
+
                        switch (ctxid) {
                        case 0x3:
                                dev_dbg(adev->dev, "Switched to AC mode!\n");