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Commit 2637dfde authored by Jilai Wang's avatar Jilai Wang
Browse files

msm: npu: Vote minimum bandwidth before unload fw via PIL 



Minimum bandwidth voting is required for PIL to unload fw properly.

Change-Id: I109d8fbb33d4ecd424432cc58aaa0ea7c5d95624
Signed-off-by: default avatarJilai Wang <jilaiw@codeaurora.org>
parent a99755a4

drivers/media/platform/msm/npu/npu_mgr.c

+10 −0
Original line number Diff line number Diff line
@@ -193,6 +193,7 @@ int load_fw(struct npu_device *npu_dev) 
int unload_fw(struct npu_device *npu_dev)

{

	struct npu_host_ctx *host_ctx = &npu_dev->host_ctx;

	int ret = 0;



	if (host_ctx->auto_pil_disable) {

		NPU_WARN("auto pil is disabled\n");
@@ -210,7 +211,16 @@ int unload_fw(struct npu_device *npu_dev) 
		return -EBUSY;

	}



	/* vote minimum bandwidth before unload npu fw via PIL */

	ret = npu_set_bw(npu_dev, 100, 100);

	if (ret) {

		NPU_ERR("Can't update bandwidth\n");

		mutex_unlock(&host_ctx->lock);

		return ret;

	}



	subsystem_put_local(host_ctx->subsystem_handle);

	npu_set_bw(npu_dev, 0, 0);

	host_ctx->fw_state = FW_UNLOADED;

	NPU_DBG("fw is unloaded\n");

	mutex_unlock(&host_ctx->lock);