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From: Chanho Park <chanho61.park@samsung.com>
To: Alim Akhtar <alim.akhtar@samsung.com>,
	"James E . J . Bottomley" <jejb@linux.ibm.com>,
	"Martin K . Petersen" <martin.petersen@oracle.com>
Cc: Can Guo <cang@codeaurora.org>, Jaegeuk Kim <jaegeuk@kernel.org>,
	Kiwoong Kim <kwmad.kim@samsung.com>,
	Avri Altman <avri.altman@wdc.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	Christoph Hellwig <hch@infradead.org>,
	Bart Van Assche <bvanassche@acm.org>,
	jongmin jeong <jjmin.jeong@samsung.com>,
	Gyunghoon Kwon <goodjob.kwon@samsung.com>,
	linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org,
	Chanho Park <chanho61.park@samsung.com>
Subject: [PATCH 02/15] scsi: ufs: add quirk to enable host controller without interface configuration
Date: Fri,  9 Jul 2021 15:56:58 +0900	[thread overview]
Message-ID: <20210709065711.25195-3-chanho61.park@samsung.com> (raw)
In-Reply-To: <20210709065711.25195-1-chanho61.park@samsung.com>

From: jongmin jeong <jjmin.jeong@samsung.com>

samsung ExynosAuto SoC has two types of host controller interface to
support the virtualization of UFS Device.
One is the physical host(PH) that the same as conventaional UFSHCI,
and the other is the virtual host(VH) that support data transfer function only.

In this structure, the virtual host does not support like device management.
This patch skips the interface configuration part that cannot be performed
in the virtual host.

Signed-off-by: jongmin jeong <jjmin.jeong@samsung.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
---
 drivers/scsi/ufs/ufshcd.c | 3 +++
 drivers/scsi/ufs/ufshcd.h | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 9702086e9860..3451b335f2b4 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7988,6 +7988,9 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool async)
 	if (ret)
 		goto out;
 
+	if (hba->quirks & UFSHCD_QUIRK_SKIP_INTERFACE_CONFIGURATION)
+		goto out;
+
 	/* Debug counters initialization */
 	ufshcd_clear_dbg_ufs_stats(hba);
 
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index e67b1fcfe1a2..fe523cbd68dd 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -573,6 +573,12 @@ enum ufshcd_quirks {
 	 * support UIC command
 	 */
 	UFSHCD_QUIRK_BROKEN_UIC_CMD			= 1 << 15,
+
+	/*
+	 * This quirk needs to be enabled if the host controller cannot
+	 * support interface configuration.
+	 */
+	UFSHCD_QUIRK_SKIP_INTERFACE_CONFIGURATION	= 1 << 16,
 };
 
 enum ufshcd_caps {
-- 
2.32.0


  parent reply	other threads:[~2021-07-09  6:58 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20210709065721epcas2p46f7aae35571c10f233b71a6381214419@epcas2p4.samsung.com>
2021-07-09  6:56 ` [PATCH 00/15] introduce exynosauto v9 ufs driver Chanho Park
     [not found]   ` <CGME20210709065746epcas2p10d43898e863a873594f81f4a5a4f0ef2@epcas2p1.samsung.com>
2021-07-09  6:56     ` [PATCH 01/15] scsi: ufs: add quirk to handle broken UIC command Chanho Park
     [not found]   ` <CGME20210709065746epcas2p2f353983bbc64c1a21571fda2be59df34@epcas2p2.samsung.com>
2021-07-09  6:56     ` Chanho Park [this message]
2021-07-13 18:10       ` [PATCH 02/15] scsi: ufs: add quirk to enable host controller without interface configuration Alim Akhtar
2021-07-14  3:26         ` Chanho Park
     [not found]   ` <CGME20210709065746epcas2p47985fa3c33297a36d772fb9d45f30972@epcas2p4.samsung.com>
2021-07-09  6:56     ` [PATCH 03/15] scsi: ufs: ufs-exynos: change pclk available max value Chanho Park
2021-07-13 18:18       ` Alim Akhtar
     [not found]   ` <CGME20210709065746epcas2p26f07099abcb946400ff2777fd9df975d@epcas2p2.samsung.com>
2021-07-09  6:57     ` [PATCH 04/15] scsi: ufs: ufs-exynos: simplify drv_data retrieval Chanho Park
2021-07-13 18:59       ` Alim Akhtar
     [not found]   ` <CGME20210709065746epcas2p4cd871004fa034dace5046a8acf1d1b96@epcas2p4.samsung.com>
2021-07-09  6:57     ` [PATCH 05/15] scsi: ufs: ufs-exynos: get sysreg regmap for io-coherency Chanho Park
     [not found]   ` <CGME20210709065746epcas2p1367527fd1299b15fc339876281cb8af1@epcas2p1.samsung.com>
2021-07-09  6:57     ` [PATCH 06/15] scsi: ufs: ufs-exynos: add refclkout_stop control Chanho Park
2021-07-14  1:41       ` Alim Akhtar
     [not found]   ` <CGME20210709065746epcas2p20094c97a7abfd7704c30ca6bac04f924@epcas2p2.samsung.com>
2021-07-09  6:57     ` [PATCH 07/15] scsi: ufs: ufs-exynos: add setup_clocks callback Chanho Park
     [not found]   ` <CGME20210709065746epcas2p1b3e10cef9024d2092b019bddd7580256@epcas2p1.samsung.com>
2021-07-09  6:57     ` [PATCH 08/15] scsi: ufs: ufs-exynos: correct timeout value setting registers Chanho Park
     [not found]   ` <CGME20210709065746epcas2p35975dfa47363d0ea792988047f83a0ae@epcas2p3.samsung.com>
2021-07-09  6:57     ` [PATCH 09/15] scsi: ufs: ufs-exynos: support custom version of ufs_hba_variant_ops Chanho Park
     [not found]   ` <CGME20210709065747epcas2p2e966883390d1e77a43a897eae9ef0ad3@epcas2p2.samsung.com>
2021-07-09  6:57     ` [PATCH 10/15] scsi: ufs: ufs-exynos: add EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR option Chanho Park
     [not found]   ` <CGME20210709065747epcas2p11576f5bd85eb2d99ae24a7241869a2f9@epcas2p1.samsung.com>
2021-07-09  6:57     ` [PATCH 11/15] scsi: ufs: ufs-exynos: factor out priv data init Chanho Park
     [not found]   ` <CGME20210709065747epcas2p284a0f5eac2e46bf03283b7a7363616c4@epcas2p2.samsung.com>
2021-07-09  6:57     ` [PATCH 12/15] scsi: ufs: ufs-exynos: add pre/post_hce_enable drv callbacks Chanho Park
     [not found]   ` <CGME20210709065747epcas2p483ee186906567e9e61a2a2c10209fc79@epcas2p4.samsung.com>
2021-07-09  6:57     ` [PATCH 13/15] scsi: ufs: ufs-exynos: support exynosauto v9 ufs driver Chanho Park
2021-07-13 10:57       ` Krzysztof Kozlowski
2021-07-13 12:07         ` Chanho Park
2021-07-13 12:11         ` Alim Akhtar
2021-07-16 15:03           ` Rob Herring
     [not found]   ` <CGME20210709065747epcas2p10c59e097d9770fc02134cb0545c9de4f@epcas2p1.samsung.com>
2021-07-09  6:57     ` [PATCH 14/15] scsi: ufs: ufs-exynos: multi-host configuration for exynosauto Chanho Park
2021-08-03 16:57       ` Bean Huo
2021-08-03 23:35         ` Chanho Park
     [not found]   ` <CGME20210709065747epcas2p37d1d2fc1ce5b582b71fa5187099d1801@epcas2p3.samsung.com>
2021-07-09  6:57     ` [PATCH 15/15] scsi: ufs: ufs-exynos: introduce exynosauto v9 virtual host Chanho Park

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