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path: root/drivers/staging/intel_sst/intel_sst_drv_interface.c
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Diffstat (limited to 'drivers/staging/intel_sst/intel_sst_drv_interface.c')
-rw-r--r--drivers/staging/intel_sst/intel_sst_drv_interface.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/staging/intel_sst/intel_sst_drv_interface.c b/drivers/staging/intel_sst/intel_sst_drv_interface.c
index 1021477..22bd29c 100644
--- a/drivers/staging/intel_sst/intel_sst_drv_interface.c
+++ b/drivers/staging/intel_sst/intel_sst_drv_interface.c
@@ -33,6 +33,7 @@
#include <linux/fs.h>
#include <linux/firmware.h>
#include <linux/pm_runtime.h>
+#include <linux/export.h>
#include "intel_sst.h"
#include "intel_sst_ioctl.h"
#include "intel_sst_fw_ipc.h"
@@ -53,6 +54,13 @@ int sst_download_fw(void)
if (sst_drv_ctx->sst_state != SST_UN_INIT)
return -EPERM;
+ /* Reload firmware is not needed for MRST */
+ if ( (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) && sst_drv_ctx->fw_downloaded) {
+ pr_debug("FW already downloaded, skip for MRST platform\n");
+ sst_drv_ctx->sst_state = SST_FW_RUNNING;
+ return 0;
+ }
+
snprintf(name, sizeof(name), "%s%04x%s", "fw_sst_",
sst_drv_ctx->pci_id, ".bin");
@@ -71,6 +79,9 @@ int sst_download_fw(void)
retval = sst_wait_timeout(sst_drv_ctx, &sst_drv_ctx->alloc_block[0]);
if (retval)
pr_err("fw download failed %d\n" , retval);
+ else
+ sst_drv_ctx->fw_downloaded = 1;
+
end_restore:
release_firmware(fw_sst);
sst_drv_ctx->alloc_block[0].sst_id = BLOCK_UNINIT;