linux-kernel - [PATCH AUTOSEL 5.18 11/56] scsi: ufs: core: Add UFSHCD_QUIRK_HIBERN

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Message-Id: <20220814153026.2377377-11-sashal@kernel.org>
Date:   Sun, 14 Aug 2022 11:29:41 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <sashal@...nel.org>, jejb@...ux.ibm.com,
        bvanassche@....org, beanhuo@...ron.com, avri.altman@....com,
        adrian.hunter@...el.com, j-young.choi@...sung.com,
        ebiggers@...gle.com, jjmin.jeong@...sung.com,
        linux-scsi@...r.kernel.org
Subject: [PATCH AUTOSEL 5.18 11/56] scsi: ufs: core: Add UFSHCD_QUIRK_HIBERN_FASTAUTO

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>

[ Upstream commit 2f11bbc2c7f37e3a6151ac548b1c0679cc90ea83 ]

Add UFSHCD_QUIRK_HIBERN_FASTAUTO quirk for host controllers which supports
auto-hibernate the capability but only FASTAUTO mode.

Link: https://lore.kernel.org/r/20220603110524.1997825-4-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/scsi/ufs/ufshcd.c | 9 +++++++--
 drivers/scsi/ufs/ufshcd.h | 6 ++++++
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 95be78549ed2..92de5b8d187c 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4290,8 +4290,13 @@ static int ufshcd_get_max_pwr_mode(struct ufs_hba *hba)
 	if (hba->max_pwr_info.is_valid)
 		return 0;
 
-	pwr_info->pwr_tx = FAST_MODE;
-	pwr_info->pwr_rx = FAST_MODE;
+	if (hba->quirks & UFSHCD_QUIRK_HIBERN_FASTAUTO) {
+		pwr_info->pwr_tx = FASTAUTO_MODE;
+		pwr_info->pwr_rx = FASTAUTO_MODE;
+	} else {
+		pwr_info->pwr_tx = FAST_MODE;
+		pwr_info->pwr_rx = FAST_MODE;
+	}
 	pwr_info->hs_rate = PA_HS_MODE_B;
 
 	/* Get the connected lane count */
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 1745144eb904..d14cc48226ce 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -608,6 +608,12 @@ enum ufshcd_quirks {
 	 * 64-bit addressing supported capability but it doesn't work.
 	 */
 	UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS		= 1 << 17,
+
+	/*
+	 * This quirk needs to be enabled if the host controller has
+	 * auto-hibernate capability but it's FASTAUTO only.
+	 */
+	UFSHCD_QUIRK_HIBERN_FASTAUTO			= 1 << 18,
 };
 
 enum ufshcd_caps {
-- 
2.35.1