From: Samson Tam <samson....@amd.com>
[Why]
On resume from S3, may get apply_idle_optimizations call while DMUB
is inactive which will just time out.
[How]
Set and track power state in dmub_srv and check power state before
sending commands to DMUB. Add interface in both dmub_srv and
dc_dmub_srv
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
Acked-by: Wayne Lin <wayne....@amd.com>
Signed-off-by: Samson Tam <samson....@amd.com>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +++
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 14 +++++++++++++
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h | 2 ++
drivers/gpu/drm/amd/display/dmub/dmub_srv.h | 21 +++++++++++++++++++
.../gpu/drm/amd/display/dmub/src/dmub_srv.c | 15 +++++++++++++
5 files changed, 55 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 9cce2e7b9208..84efa9e7c951 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2685,6 +2685,7 @@ static int dm_suspend(void *handle)
hpd_rx_irq_work_suspend(dm);
dc_set_power_state(dm->dc, DC_ACPI_CM_POWER_STATE_D3);
+ dc_dmub_srv_set_power_state(dm->dc->ctx->dmub_srv,
DC_ACPI_CM_POWER_STATE_D3);
return 0;
}
@@ -2880,6 +2881,7 @@ static int dm_resume(void *handle)
if (r)
DRM_ERROR("DMUB interface failed to initialize:
status=%d\n", r);
+ dc_dmub_srv_set_power_state(dm->dc->ctx->dmub_srv,
DC_ACPI_CM_POWER_STATE_D0);
dc_set_power_state(dm->dc, DC_ACPI_CM_POWER_STATE_D0);
dc_resume(dm->dc);
@@ -2930,6 +2932,7 @@ static int dm_resume(void *handle)
}
/* power on hardware */
+ dc_dmub_srv_set_power_state(dm->dc->ctx->dmub_srv,
DC_ACPI_CM_POWER_STATE_D0);
dc_set_power_state(dm->dc, DC_ACPI_CM_POWER_STATE_D0);
/* program HPD filter */
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
index 53400cc05b5b..1a4d615ccdec 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c
@@ -1268,3 +1268,17 @@ void dc_dmub_srv_exit_low_power_state(const struct dc
*dc)
ASSERT(0);
}
+void dc_dmub_srv_set_power_state(struct dc_dmub_srv *dc_dmub_srv, enum
dc_acpi_cm_power_state powerState)
+{
+ struct dmub_srv *dmub;
+
+ if (!dc_dmub_srv)
+ return;
+
+ dmub = dc_dmub_srv->dmub;
+
+ if (powerState == DC_ACPI_CM_POWER_STATE_D0)
+ dmub_srv_set_power_state(dmub, DMUB_POWER_STATE_D0);
+ else
+ dmub_srv_set_power_state(dmub, DMUB_POWER_STATE_D3);
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h
b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h
index d4a60f53faab..c25ce7546f71 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h
@@ -102,4 +102,6 @@ void dc_dmub_srv_subvp_save_surf_addr(const struct
dc_dmub_srv *dc_dmub_srv, con
bool dc_dmub_srv_is_hw_pwr_up(struct dc_dmub_srv *dc_dmub_srv, bool wait);
void dc_dmub_srv_notify_idle(const struct dc *dc, bool allow_idle);
void dc_dmub_srv_exit_low_power_state(const struct dc *dc);
+
+void dc_dmub_srv_set_power_state(struct dc_dmub_srv *dc_dmub_srv, enum
dc_acpi_cm_power_state powerState);
#endif /* _DMUB_DC_SRV_H_ */
diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
index df63aa8f01e9..d1a4ed6f5916 100644
--- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
+++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
@@ -150,6 +150,13 @@ enum dmub_memory_access_type {
DMUB_MEMORY_ACCESS_DMA
};
+/* enum dmub_power_state type - to track DC power state in dmub_srv */
+enum dmub_srv_power_state_type {
+ DMUB_POWER_STATE_UNDEFINED = 0,
+ DMUB_POWER_STATE_D0 = 1,
+ DMUB_POWER_STATE_D3 = 8
+};
+
/**
* struct dmub_region - dmub hw memory region
* @base: base address for region, must be 256 byte aligned
@@ -485,6 +492,8 @@ struct dmub_srv {
/* Feature capabilities reported by fw */
struct dmub_feature_caps feature_caps;
struct dmub_visual_confirm_color visual_confirm_color;
+
+ enum dmub_srv_power_state_type power_state;
};
/**
@@ -889,6 +898,18 @@ enum dmub_status dmub_srv_clear_inbox0_ack(struct dmub_srv
*dmub);
*/
void dmub_srv_subvp_save_surf_addr(struct dmub_srv *dmub, const struct
dc_plane_address *addr, uint8_t subvp_index);
+/**
+ * dmub_srv_set_power_state() - Track DC power state in dmub_srv
+ * @dmub: The dmub service
+ * @power_state: DC power state setting
+ *
+ * Store DC power state in dmub_srv. If dmub_srv is in D3, then don't send
messages to DMUB
+ *
+ * Return:
+ * void
+ */
+void dmub_srv_set_power_state(struct dmub_srv *dmub, enum
dmub_srv_power_state_type dmub_srv_power_state);
+
#if defined(__cplusplus)
}
#endif
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
index a329a6ecf4dd..53ac1c66dd86 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
@@ -713,6 +713,7 @@ enum dmub_status dmub_srv_hw_init(struct dmub_srv *dmub,
dmub->hw_funcs.reset_release(dmub);
dmub->hw_init = true;
+ dmub->power_state = DMUB_POWER_STATE_D0;
return DMUB_STATUS_OK;
}
@@ -766,6 +767,9 @@ enum dmub_status dmub_srv_cmd_queue(struct dmub_srv *dmub,
if (!dmub->hw_init)
return DMUB_STATUS_INVALID;
+ if (dmub->power_state != DMUB_POWER_STATE_D0)
+ return DMUB_STATUS_INVALID;
+
if (dmub->inbox1_rb.rptr > dmub->inbox1_rb.capacity ||
dmub->inbox1_rb.wrpt > dmub->inbox1_rb.capacity) {
return DMUB_STATUS_HW_FAILURE;
@@ -784,6 +788,9 @@ enum dmub_status dmub_srv_cmd_execute(struct dmub_srv *dmub)
if (!dmub->hw_init)
return DMUB_STATUS_INVALID;
+ if (dmub->power_state != DMUB_POWER_STATE_D0)
+ return DMUB_STATUS_INVALID;
+
/**
* Read back all the queued commands to ensure that they've
* been flushed to framebuffer memory. Otherwise DMCUB might
@@ -1100,3 +1107,11 @@ void dmub_srv_subvp_save_surf_addr(struct dmub_srv
*dmub, const struct dc_plane_
subvp_index);
}
}
+
+void dmub_srv_set_power_state(struct dmub_srv *dmub, enum
dmub_srv_power_state_type dmub_srv_power_state)
+{
+ if (!dmub || !dmub->hw_init)
+ return;
+
+ dmub->power_state = dmub_srv_power_state;
+}
--
2.37.3
