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Commit ee32c909 authored by Kiwoong Kim's avatar Kiwoong Kim Committed by Martin K. Petersen
Browse files

scsi: ufs: introduce hibern8_notify callback



Some UFS host controller may need to configure some things around
hibern8 enter/exit

Signed-off-by: default avatarKiwoong Kim <kwmad.kim@samsung.com>
Reviewed-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent d2877be4
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+10 −2
Original line number Diff line number Diff line
@@ -2697,6 +2697,8 @@ static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
	int ret;
	struct uic_command uic_cmd = {0};

	ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER, PRE_CHANGE);

	uic_cmd.command = UIC_CMD_DME_HIBER_ENTER;
	ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd);

@@ -2710,7 +2712,9 @@ static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba)
		 */
		if (ufshcd_link_recovery(hba))
			ret = -ENOLINK;
	}
	} else
		ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_ENTER,
								POST_CHANGE);

	return ret;
}
@@ -2733,13 +2737,17 @@ static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba)
	struct uic_command uic_cmd = {0};
	int ret;

	ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_EXIT, PRE_CHANGE);

	uic_cmd.command = UIC_CMD_DME_HIBER_EXIT;
	ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd);
	if (ret) {
		dev_err(hba->dev, "%s: hibern8 exit failed. ret = %d\n",
			__func__, ret);
		ret = ufshcd_link_recovery(hba);
	}
	} else
		ufshcd_vops_hibern8_notify(hba, UIC_CMD_DME_HIBER_EXIT,
								POST_CHANGE);

	return ret;
}
+12 −0
Original line number Diff line number Diff line
@@ -265,6 +265,8 @@ struct ufs_pwr_mode_info {
 *                  to set some things
 * @setup_task_mgmt: called before any task management request is issued
 *                  to set some things
 * @hibern8_notify: called around hibern8 enter/exit
 *		    to configure some things
 * @suspend: called during host controller PM callback
 * @resume: called during host controller PM callback
 * @dbg_register_dump: used to dump controller debug information
@@ -290,6 +292,8 @@ struct ufs_hba_variant_ops {
					struct ufs_pa_layer_attr *);
	void	(*setup_xfer_req)(struct ufs_hba *, int, bool);
	void	(*setup_task_mgmt)(struct ufs_hba *, int, u8);
	void    (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
				       enum ufs_notify_change_status);
	int     (*suspend)(struct ufs_hba *, enum ufs_pm_op);
	int     (*resume)(struct ufs_hba *, enum ufs_pm_op);
	void	(*dbg_register_dump)(struct ufs_hba *hba);
@@ -821,6 +825,14 @@ static inline void ufshcd_vops_setup_task_mgmt(struct ufs_hba *hba,
		return hba->vops->setup_task_mgmt(hba, tag, tm_function);
}

static inline void ufshcd_vops_hibern8_notify(struct ufs_hba *hba,
					enum uic_cmd_dme cmd,
					enum ufs_notify_change_status status)
{
	if (hba->vops && hba->vops->hibern8_notify)
		return hba->vops->hibern8_notify(hba, cmd, status);
}

static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op)
{
	if (hba->vops && hba->vops->suspend)