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bus: mhi: core: Read and save device hardware information from BHI

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Device hardware specific information such as serial number and the OEM
PK hash can be read using BHI and saved on host to identify the
endpoint.

Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200929175218.8178-10-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bhaumik Bhatt
2020-09-29 23:22:08 +05:30
committed by Greg Kroah-Hartman
parent 601455dae0
commit 8e3729bfa7
2 changed files with 22 additions and 1 deletions
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6
include/linux/mhi.h
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@@ -16,6 +16,8 @@
#include <linux/wait.h>
#include <linux/workqueue.h>
#define MHI_MAX_OEM_PK_HASH_SEGMENTS 16
struct mhi_chan;
struct mhi_event;
struct mhi_ctxt;
@@ -316,6 +318,8 @@ struct mhi_controller_config {
* @device_number: MHI controller device number
* @major_version: MHI controller major revision number
* @minor_version: MHI controller minor revision number
* @serial_number: MHI controller serial number obtained from BHI
* @oem_pk_hash: MHI controller OEM PK Hash obtained from BHI
* @mhi_event: MHI event ring configurations table
* @mhi_cmd: MHI command ring configurations table
* @mhi_ctxt: MHI device context, shared memory between host and device
@@ -394,6 +398,8 @@ struct mhi_controller {
u32 device_number;
u32 major_version;
u32 minor_version;
u32 serial_number;
u32 oem_pk_hash[MHI_MAX_OEM_PK_HASH_SEGMENTS];
struct mhi_event *mhi_event;
struct mhi_cmd *mhi_cmd;