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bus: mhi: host: Add session ID to MHI controller

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Session ID to be used during BHI transfers to recognize a
particular session are currently not being stored in the MHI
controller structure. Store them to allow for tracking and other
future usage.

Change-Id: I45a55f39226be3a21ff1e3317a899da1a63f3439
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Lazarus Motha <quic_lmotha@quicinc.com>
This commit is contained in:
Bhaumik Bhatt 2020-12-18 11:26:10 -08:00 committed by Gerrit - the friendly Code Review server
parent 04d4e7ae5c
commit 6375f3b44a
2 changed files with 5 additions and 4 deletions
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8
drivers/bus/mhi/host/boot.c
View File

@ -185,7 +185,7 @@ static int mhi_fw_load_bhie(struct mhi_controller *mhi_cntrl,
void __iomem *base = mhi_cntrl->bhie;
struct device *dev = &mhi_cntrl->mhi_dev->dev;
rwlock_t *pm_lock = &mhi_cntrl->pm_lock;
u32 tx_status, sequence_id;
u32 tx_status;
int ret;
read_lock_bh(pm_lock);
@ -194,9 +194,9 @@ static int mhi_fw_load_bhie(struct mhi_controller *mhi_cntrl,
return -EIO;
}
sequence_id = MHI_RANDOM_U32_NONZERO(BHIE_TXVECSTATUS_SEQNUM_BMSK);
mhi_cntrl->session_id = MHI_RANDOM_U32_NONZERO(BHIE_TXVECSTATUS_SEQNUM_BMSK);
dev_dbg(dev, "Starting image download via BHIe. Sequence ID: %u\n",
sequence_id);
mhi_cntrl->session_id);
mhi_write_reg(mhi_cntrl, base, BHIE_TXVECADDR_HIGH_OFFS,
upper_32_bits(mhi_buf->dma_addr));
@ -206,7 +206,7 @@ static int mhi_fw_load_bhie(struct mhi_controller *mhi_cntrl,
mhi_write_reg(mhi_cntrl, base, BHIE_TXVECSIZE_OFFS, mhi_buf->len);
ret = mhi_write_reg_field(mhi_cntrl, base, BHIE_TXVECDB_OFFS,
BHIE_TXVECDB_SEQNUM_BMSK, sequence_id);
BHIE_TXVECDB_SEQNUM_BMSK, mhi_cntrl->session_id);
read_unlock_bh(pm_lock);
if (ret)

1
include/linux/mhi.h
View File

@ -429,6 +429,7 @@ struct mhi_controller {
u32 minor_version;
u32 serial_number;
u32 oem_pk_hash[MHI_MAX_OEM_PK_HASH_SEGMENTS];
u32 session_id;
struct mhi_event *mhi_event;
struct mhi_cmd *mhi_cmd;