diff options
| author | Asutosh Das <asutoshd@codeaurora.org> | 2021-09-28 02:06:13 -0700 |
|---|---|---|
| committer | Bhupesh Sharma <bhupesh.sharma@linaro.org> | 2022-05-20 08:19:32 +0200 |
| commit | 090854301b471d60d4de4402c9c80bf46950f39a (patch) | |
| tree | c893363df6a421c44d707584a5324f13e79782b1 | |
| parent | adb54728a7a088d3e85113898a2b0e49e0550d82 (diff) | |
scsi: ufs: ufs-qcom: Enter and exit hibern8 during clock scaling
Qualcomm controller needs to be in hibern8 before scaling clocks. This
change puts the controller in hibern8 state before scaling and brings it
out after scaling of clocks.
Link: https://lore.kernel.org/r/212b7aaf6d834c4a8c682fdac4a59b84013ed573.1632818942.git.nguyenb@codeaurora.org
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit a0cea83332ae2ba4b740a89fc094aba3298825db)
| -rw-r--r-- | drivers/scsi/ufs/ufs-qcom.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c index 9d9770f1db4f..a07cc1f81dae 100644 --- a/drivers/scsi/ufs/ufs-qcom.c +++ b/drivers/scsi/ufs/ufs-qcom.c @@ -1213,24 +1213,34 @@ static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba, int err = 0; if (status == PRE_CHANGE) { + err = ufshcd_uic_hibern8_enter(hba); + if (err) + return err; if (scale_up) err = ufs_qcom_clk_scale_up_pre_change(hba); else err = ufs_qcom_clk_scale_down_pre_change(hba); + if (err) + ufshcd_uic_hibern8_exit(hba); + } else { if (scale_up) err = ufs_qcom_clk_scale_up_post_change(hba); else err = ufs_qcom_clk_scale_down_post_change(hba); - if (err || !dev_req_params) + + if (err || !dev_req_params) { + ufshcd_uic_hibern8_exit(hba); goto out; + } ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx, dev_req_params->pwr_rx, dev_req_params->hs_rate, false); + ufshcd_uic_hibern8_exit(hba); } out: |