Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8941234e authored by Asutosh Das's avatar Asutosh Das
Browse files

scsi: ufs: Add UFS_DEVICE_QUIRK_PA_HIBER8TIME quirk 



This adds the quirk to increase the hibern8 timeout
on the host.

Change-Id: I716124224d67942e257e17e7482ce9f32b8a5744
Signed-off-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
parent 5acb6085

drivers/scsi/ufs/ufs-qcom.c

+27 −0
Original line number Diff line number Diff line
@@ -1620,6 +1620,29 @@ static void ufshcd_parse_pm_levels(struct ufs_hba *hba) 
		hba->spm_lvl = spm_lvl;

}



#if defined(CONFIG_SCSI_UFSHCD_QTI)

static void ufs_qcom_override_pa_h8time(struct ufs_hba *hba)

{

	int ret;

	u32 loc_tx_h8time_cap = 0;



	ret = ufshcd_dme_get(hba, UIC_ARG_MIB_SEL(TX_HIBERN8TIME_CAPABILITY,

				UIC_ARG_MPHY_TX_GEN_SEL_INDEX(0)),

				&loc_tx_h8time_cap);

	if (ret) {

		dev_err(hba->dev, "Failed getting max h8 time: %d\n", ret);

		return;

	}



	/* 1 implies 100 us */

	ret = ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME),

				loc_tx_h8time_cap + 1);

	if (ret)

		dev_err(hba->dev, "Failed updating PA_HIBERN8TIME: %d\n", ret);



}

#endif



static int ufs_qcom_apply_dev_quirks(struct ufs_hba *hba)

{

	unsigned long flags;
@@ -1646,6 +1669,10 @@ static int ufs_qcom_apply_dev_quirks(struct ufs_hba *hba) 
	if (hba->dev_info.wmanufacturerid == UFS_VENDOR_MICRON)

		hba->dev_quirks |= UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM;



#if defined(CONFIG_SCSI_UFSHCD_QTI)

	if (hba->dev_quirks & UFS_DEVICE_QUIRK_PA_HIBER8TIME)

		ufs_qcom_override_pa_h8time(hba);

#endif

	return err;

}

drivers/scsi/ufs/ufs_quirks.h

+8 −1
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2014-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2014-2020, The Linux Foundation. All rights reserved.

 */



#ifndef _UFS_QUIRKS_H_
@@ -159,5 +159,12 @@ struct ufs_dev_fix { 
 * supported features on such devices.

 */

#define UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES (1 << 14)

#if defined(CONFIG_SCSI_UFSHCD_QTI)

/*

 * Some ufs devices may need more time to be in hibern8 before exiting.

 * Enable this quirk to give it an additional 100us.

 */

#define UFS_DEVICE_QUIRK_PA_HIBER8TIME		(1 << 15)

#endif



#endif /* UFS_QUIRKS_H_ */

drivers/scsi/ufs/ufshcd.c

+6 −0
Original line number Diff line number Diff line
@@ -240,6 +240,12 @@ static struct ufs_dev_fix ufs_fixups[] = { 
		UFS_DEVICE_QUIRK_HOST_PA_SAVECONFIGTIME),

	UFS_FIX(UFS_VENDOR_SKHYNIX, "hB8aL1" /*H28U62301AMR*/,

		UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME),

#if defined(CONFIG_SCSI_UFSHCD_QTI)

	UFS_FIX(UFS_VENDOR_SAMSUNG, "KLUEG8UHDB-C2D1",

		UFS_DEVICE_QUIRK_PA_HIBER8TIME),

	UFS_FIX(UFS_VENDOR_SAMSUNG, "KLUDG4UHDB-B2D1",

		UFS_DEVICE_QUIRK_PA_HIBER8TIME),

#endif



	END_FIX

};