Linux-ARM-MSM Archive on lore.kernel.org
 help / color / Atom feed
From: Can Guo <cang@codeaurora.org>
To: asutoshd@codeaurora.org, nguyenb@codeaurora.org,
	hongwus@codeaurora.org, rnayak@codeaurora.org,
	linux-scsi@vger.kernel.org, kernel-team@android.com,
	saravanak@google.com, salyzyn@google.com, cang@codeaurora.org
Cc: Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Alim Akhtar <alim.akhtar@samsung.com>,
	Avri Altman <avri.altman@wdc.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Pedro Sousa <sousa@synopsys.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-arm-msm@vger.kernel.org (open list:ARM/QUALCOMM SUPPORT),
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v1 2/2] scsi: ufs: Select INITIAL ADAPT type for HS Gear4
Date: Tue, 11 Feb 2020 21:38:29 -0800
Message-ID: <1581485910-8307-3-git-send-email-cang@codeaurora.org> (raw)
In-Reply-To: <1581485910-8307-1-git-send-email-cang@codeaurora.org>

ADAPT is added specifically for HS Gear4 mode only, select INITIAL ADAPT
before do power mode change to G4 and select NO ADAPT before switch to
non-G4 modes.

Signed-off-by: Can Guo <cang@codeaurora.org>
---
 drivers/scsi/ufs/ufs-qcom.c | 14 ++++++++++++++
 drivers/scsi/ufs/unipro.h   |  7 +++++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index d593523..6a905bb 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -942,6 +942,20 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
 		if (!ufshcd_is_hs_mode(&hba->pwr_info) &&
 			ufshcd_is_hs_mode(dev_req_params))
 			ufs_qcom_dev_ref_clk_ctrl(host, true);
+
+		if (host->hw_ver.major >= 0x4) {
+			if (dev_req_params->gear_tx == UFS_HS_G4) {
+				/* INITIAL ADAPT */
+				ufshcd_dme_set(hba,
+					       UIC_ARG_MIB(PA_TXHSADAPTTYPE),
+					       PA_INITIAL_ADAPT);
+			} else {
+				/* NO ADAPT */
+				ufshcd_dme_set(hba,
+					       UIC_ARG_MIB(PA_TXHSADAPTTYPE),
+					       PA_NO_ADAPT);
+			}
+		}
 		break;
 	case POST_CHANGE:
 		if (ufs_qcom_cfg_timers(hba, dev_req_params->gear_rx,
diff --git a/drivers/scsi/ufs/unipro.h b/drivers/scsi/ufs/unipro.h
index 3dc4d8b..766d551 100644
--- a/drivers/scsi/ufs/unipro.h
+++ b/drivers/scsi/ufs/unipro.h
@@ -146,6 +146,12 @@
 #define PA_SLEEPNOCONFIGTIME	0x15A2
 #define PA_STALLNOCONFIGTIME	0x15A3
 #define PA_SAVECONFIGTIME	0x15A4
+#define PA_TXHSADAPTTYPE       0x15D4
+
+/* Adpat type for PA_TXHSADAPTTYPE attribute */
+#define PA_REFRESH_ADAPT       0x00
+#define PA_INITIAL_ADAPT       0x01
+#define PA_NO_ADAPT            0x03
 
 #define PA_TACTIVATE_TIME_UNIT_US	10
 #define PA_HIBERN8_TIME_UNIT_US		100
@@ -203,6 +209,7 @@ enum ufs_hs_gear_tag {
 	UFS_HS_G1,		/* HS Gear 1 (default for reset) */
 	UFS_HS_G2,		/* HS Gear 2 */
 	UFS_HS_G3,		/* HS Gear 3 */
+	UFS_HS_G4,		/* HS Gear 4 */
 };
 
 enum ufs_unipro_ver {
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

       reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1581485910-8307-1-git-send-email-cang@codeaurora.org>
2020-02-12  5:38 ` Can Guo [this message]
2020-02-12 12:26   ` Avri Altman
2020-02-12 17:04   ` asutoshd
2020-02-13  0:36   ` Martin K. Petersen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1581485910-8307-3-git-send-email-cang@codeaurora.org \
    --to=cang@codeaurora.org \
    --cc=agross@kernel.org \
    --cc=alim.akhtar@samsung.com \
    --cc=asutoshd@codeaurora.org \
    --cc=avri.altman@wdc.com \
    --cc=bjorn.andersson@linaro.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=hongwus@codeaurora.org \
    --cc=jejb@linux.ibm.com \
    --cc=kernel-team@android.com \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=martin.petersen@oracle.com \
    --cc=nguyenb@codeaurora.org \
    --cc=rnayak@codeaurora.org \
    --cc=salyzyn@google.com \
    --cc=saravanak@google.com \
    --cc=sousa@synopsys.com \
    --cc=tglx@linutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-ARM-MSM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-arm-msm/0 linux-arm-msm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-arm-msm linux-arm-msm/ https://lore.kernel.org/linux-arm-msm \
		linux-arm-msm@vger.kernel.org
	public-inbox-index linux-arm-msm

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-arm-msm


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git