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scsi:ufs: Keep UFS's high power mode when bkops enabled

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When bkops is enabled, the UFS device may do bkops during suspend.
With bkops enabled during suspend, configure the UFS's vccq power
in active operation configuration, allowing the device to draw
high power to support bkops and avoid over current event.

Change-Id: I6677b56cdb97689fa7ffc441f68a62af0dcbf53a
Signed-off-by: Bao D. Nguyen <nguyenb@codeaurora.org>
This commit is contained in:
Bao D. Nguyen 2020-07-15 11:39:35 -07:00
commit 0cbc11d014
2 changed files with 12 additions and 10 deletions
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16
drivers/scsi/ufs/ufs-qcom.c
View file

@ -993,8 +993,7 @@ static int ufs_qcom_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
err = ufs_qcom_disable_vreg(hba->dev,
host->vddp_ref_clk);
if (host->vccq_parent && !hba->auto_bkops_enabled)
ufs_qcom_config_vreg(hba->dev,
host->vccq_parent, false);
ufs_qcom_disable_vreg(hba->dev, host->vccq_parent);
if (!err)
err = ufs_qcom_unvote_qos_all(hba);
}
@ -1011,8 +1010,9 @@ static int ufs_qcom_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
hba->spm_lvl > UFS_PM_LVL_3))
ufs_qcom_enable_vreg(hba->dev,
host->vddp_ref_clk);
if (host->vccq_parent)
ufs_qcom_config_vreg(hba->dev, host->vccq_parent, true);
ufs_qcom_enable_vreg(hba->dev, host->vccq_parent);
err = ufs_qcom_enable_lane_clks(host);
if (err)
@ -2563,9 +2563,9 @@ static int ufs_qcom_init(struct ufs_hba *hba)
err = ufs_qcom_parse_reg_info(host, "qcom,vccq-parent",
&host->vccq_parent);
if (host->vccq_parent) {
err = ufs_qcom_config_vreg(hba->dev, host->vccq_parent, true);
err = ufs_qcom_enable_vreg(dev, host->vccq_parent);
if (err) {
dev_err(dev, "%s: failed vccq-parent set load: %d\n",
dev_err(dev, "%s: failed enable vccq-parent err=%d\n",
__func__, err);
goto out_disable_vddp;
}
@ -2573,7 +2573,7 @@ static int ufs_qcom_init(struct ufs_hba *hba)
err = ufs_qcom_init_lane_clks(host);
if (err)
goto out_set_load_vccq_parent;
goto out_disable_vccq_parent;
ufs_qcom_parse_pm_level(hba);
ufs_qcom_parse_limits(host);
@ -2617,9 +2617,9 @@ static int ufs_qcom_init(struct ufs_hba *hba)
ufs_qcom_qos_init(hba);
goto out;
out_set_load_vccq_parent:
out_disable_vccq_parent:
if (host->vccq_parent)
ufs_qcom_config_vreg(hba->dev, host->vccq_parent, false);
ufs_qcom_disable_vreg(dev, host->vccq_parent);
out_disable_vddp:
if (host->vddp_ref_clk)
ufs_qcom_disable_vreg(dev, host->vddp_ref_clk);

6
drivers/scsi/ufs/ufshcd.c
View file

@ -8480,8 +8480,10 @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
ret = ufshcd_link_state_transition(hba, req_link_state, 1);
if (ret)
goto set_dev_active;
ufshcd_vreg_set_lpm(hba);
#if defined(CONFIG_SCSI_UFSHCD_QTI)
if (!hba->auto_bkops_enabled)
#endif
ufshcd_vreg_set_lpm(hba);
disable_clks:
/*