From: Wyatt Wood <wyatt.w...@amd.com>
[Why]
Add support for new fw command for runtime feature detection.
[How]
Driver sends command through ring buffer, and fw returns data back
through this command.
Signed-off-by: Wyatt Wood <wyatt.w...@amd.com>
Reviewed-by: Jun Lei <jun....@amd.com>
Acked-by: Eryk Brol <eryk.b...@amd.com>
---
drivers/gpu/drm/amd/display/dmub/dmub_srv.h | 6 ++++
.../gpu/drm/amd/display/dmub/src/dmub_srv.c | 29 +++++++++++++++++++
2 files changed, 35 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
index b82a46890846..863cd9cc93ff 100644
--- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
+++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h
@@ -345,6 +345,9 @@ struct dmub_srv {
uint64_t fb_base;
uint64_t fb_offset;
uint32_t psp_version;
+
+ /* Feature capabilities reported by fw */
+ struct dmub_feature_caps feature_caps;
};
/**
@@ -608,6 +611,9 @@ void dmub_flush_buffer_mem(const struct dmub_fb *fb);
enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub,
union dmub_fw_boot_status *status);
+enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub,
+ union dmub_rb_cmd *cmd);
+
#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 ba8494cf005f..f388d36af0b6 100644
--- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
+++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c
@@ -648,3 +648,32 @@ enum dmub_status dmub_srv_get_fw_boot_status(struct
dmub_srv *dmub,
return DMUB_STATUS_OK;
}
+
+enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub,
+ union dmub_rb_cmd *cmd)
+{
+ enum dmub_status status = DMUB_STATUS_OK;
+
+ // Queue command
+ status = dmub_srv_cmd_queue(dmub, cmd);
+
+ if (status != DMUB_STATUS_OK)
+ return status;
+
+ // Execute command
+ status = dmub_srv_cmd_execute(dmub);
+
+ if (status != DMUB_STATUS_OK)
+ return status;
+
+ // Wait for DMUB to process command
+ status = dmub_srv_wait_for_idle(dmub, 100000);
+
+ if (status != DMUB_STATUS_OK)
+ return status;
+
+ // Copy data back from ring buffer into command
+ dmub_rb_get_return_data(&dmub->inbox1_rb, cmd);
+
+ return status;
+}
--
2.25.1
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