Introduce event_notify variant function to allow
vendor to get notification of important events and connect
to any proprietary debugging facilities.
Reviewed-by: Can Guo <[email protected]>
Signed-off-by: Stanley Chu <[email protected]>
---
drivers/scsi/ufs/ufshcd.c | 2 ++
drivers/scsi/ufs/ufshcd.h | 11 +++++++++++
2 files changed, 13 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 1a7d31849511..6e72c0543c7b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4480,6 +4480,8 @@ void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val)
e->val[e->pos] = val;
e->tstamp[e->pos] = ktime_get();
e->pos = (e->pos + 1) % UFS_EVENT_HIST_LENGTH;
+
+ ufshcd_vops_event_notify(hba, id, &val);
}
EXPORT_SYMBOL_GPL(ufshcd_update_evt_hist);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index b55a71c10fa6..8c44929bed53 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -319,6 +319,7 @@ struct ufs_pwr_mode_info {
* @phy_initialization: used to initialize phys
* @device_reset: called to issue a reset pulse on the UFS device
* @program_key: program or evict an inline encryption key
+ * @event_notify: called to notify important events
*/
struct ufs_hba_variant_ops {
const char *name;
@@ -353,6 +354,8 @@ struct ufs_hba_variant_ops {
void *data);
int (*program_key)(struct ufs_hba *hba,
const union ufs_crypto_cfg_entry *cfg, int slot);
+ void (*event_notify)(struct ufs_hba *hba,
+ enum ufs_event_type evt, void *data);
};
/* clock gating state */
@@ -1100,6 +1103,14 @@ static inline int ufshcd_vops_clk_scale_notify(struct ufs_hba *hba,
return 0;
}
+static inline void ufshcd_vops_event_notify(struct ufs_hba *hba,
+ enum ufs_event_type evt,
+ void *data)
+{
+ if (hba->vops && hba->vops->event_notify)
+ hba->vops->event_notify(hba, evt, data);
+}
+
static inline int ufshcd_vops_setup_clocks(struct ufs_hba *hba, bool on,
enum ufs_notify_change_status status)
{
--
2.18.0