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authorKalle Valo <quic_kvalo@quicinc.com>2023-07-27 13:04:28 +0300
committerManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>2023-08-04 12:09:56 +0530
commitefe47a18e43f59f063a82ccaa464a3b4844bb8a8 (patch)
tree3ca9ef960d6cf708dd903026299e3cc63998561c /include/linux/mhi.h
parent14a2714085acd94da5774081a5735c655540b632 (diff)
bus: mhi: host: allow MHI client drivers to provide the firmware via a pointer
Currently MHI loads the firmware image from the path provided by client devices. ath11k needs to support firmware image embedded along with meta data (named as firmware-2.bin). So allow the client driver to request the firmware file from user space on it's own and provide the firmware image data and size to MHI via a pointer struct mhi_controller::fw_data. This is an optional feature, if fw_data is NULL MHI load the firmware using the name from struct mhi_controller::fw_image string as before. Tested with ath11k and WCN6855 hw2.0. Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Link: https://lore.kernel.org/r/20230727100430.3603551-2-kvalo@kernel.org [mani: wrapped commit message to 75 columns] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Diffstat (limited to 'include/linux/mhi.h')
-rw-r--r--include/linux/mhi.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index f6de4b6ecfc7..039943ec4d4e 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -299,6 +299,10 @@ struct mhi_controller_config {
* @iova_start: IOMMU starting address for data (required)
* @iova_stop: IOMMU stop address for data (required)
* @fw_image: Firmware image name for normal booting (optional)
+ * @fw_data: Firmware image data content for normal booting, used only
+ * if fw_image is NULL and fbc_download is true (optional)
+ * @fw_sz: Firmware image data size for normal booting, used only if fw_image
+ * is NULL and fbc_download is true (optional)
* @edl_image: Firmware image name for emergency download mode (optional)
* @rddm_size: RAM dump size that host should allocate for debugging purpose
* @sbl_size: SBL image size downloaded through BHIe (optional)
@@ -384,6 +388,8 @@ struct mhi_controller {
dma_addr_t iova_start;
dma_addr_t iova_stop;
const char *fw_image;
+ const u8 *fw_data;
+ size_t fw_sz;
const char *edl_image;
size_t rddm_size;
size_t sbl_size;