From efe47a18e43f59f063a82ccaa464a3b4844bb8a8 Mon Sep 17 00:00:00 2001 From: Kalle Valo Date: Thu, 27 Jul 2023 13:04:28 +0300 Subject: 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 Reviewed-by: Manivannan Sadhasivam Reviewed-by: Jeffrey Hugo Link: https://lore.kernel.org/r/20230727100430.3603551-2-kvalo@kernel.org [mani: wrapped commit message to 75 columns] Signed-off-by: Manivannan Sadhasivam --- include/linux/mhi.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/linux') 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; -- cgit