diff options
| author | Can Guo <can.guo@oss.qualcomm.com> | 2026-03-25 08:21:52 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2026-03-27 17:20:30 -0400 |
| commit | 26605db7604deb18cf004cf3ad51e72e5d9b7add (patch) | |
| tree | a2305d0b5e3c80bfe28fd382b7c08bba32dcbdd3 /drivers/ufs/core | |
| parent | 385b95893e799885ec54a4ec2e240b1d814205be (diff) | |
| download | linux-next-26605db7604deb18cf004cf3ad51e72e5d9b7add.tar.gz linux-next-26605db7604deb18cf004cf3ad51e72e5d9b7add.zip | |
scsi: ufs: ufs-qcom: Implement vops get_rx_fom()
On some platforms, host's M-PHY RX_FOM Attribute always reads 0, meaning SW
cannot rely on Figure of Merit (FOM) to identify the optimal TX
Equalization settings for device's TX Lanes. Implement the vops
ufs_qcom_get_rx_fom() such that SW can utilize the UFS Eye Opening Monitor
(EOM) to evaluate the TX Equalization settings for device's TX Lanes.
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Link: https://patch.msgid.link/20260325152154.1604082-11-can.guo@oss.qualcomm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs/core')
| -rw-r--r-- | drivers/ufs/core/ufs-txeq.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ufs/core/ufs-txeq.c b/drivers/ufs/core/ufs-txeq.c index 3a879c644faa..b2dc89124353 100644 --- a/drivers/ufs/core/ufs-txeq.c +++ b/drivers/ufs/core/ufs-txeq.c @@ -232,9 +232,8 @@ ufshcd_compose_tx_eq_setting(struct ufshcd_tx_eq_settings *settings, * * Returns 0 on success, negative error code otherwise */ -static int ufshcd_apply_tx_eq_settings(struct ufs_hba *hba, - struct ufshcd_tx_eq_params *params, - u32 gear) +int ufshcd_apply_tx_eq_settings(struct ufs_hba *hba, + struct ufshcd_tx_eq_params *params, u32 gear) { struct ufs_pa_layer_attr *pwr_info = &hba->max_pwr_info.info; u32 setting; @@ -263,6 +262,7 @@ static int ufshcd_apply_tx_eq_settings(struct ufs_hba *hba, return 0; } +EXPORT_SYMBOL_GPL(ufshcd_apply_tx_eq_settings); /** * ufshcd_evaluate_tx_eqtr_fom - Evaluate TX EQTR FOM results |