All of lore.kernel.org
 help / color / mirror / Atom feed
From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <martin.petersen@oracle.com>,
	<avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
	<pedrom.sousa@synopsys.com>, <jejb@linux.ibm.com>,
	<matthias.bgg@gmail.com>
Cc: <linux-mediatek@lists.infradead.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <beanhuo@micron.com>,
	<kuohong.wang@mediatek.com>, <peter.wang@mediatek.com>,
	<chun-hung.wu@mediatek.com>, <andy.teng@mediatek.com>,
	Stanley Chu <stanley.chu@mediatek.com>
Subject: [PATCH v1 4/4] scsi: ufs-mediatek: configure and enable clk-gating
Date: Fri, 13 Dec 2019 16:11:35 +0800	[thread overview]
Message-ID: <1576224695-22657-5-git-send-email-stanley.chu@mediatek.com> (raw)
In-Reply-To: <1576224695-22657-1-git-send-email-stanley.chu@mediatek.com>

Enable clk-gating with customized delayed timer value in
MediaTek Chipsets.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
 drivers/scsi/ufs/ufs-mediatek.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 71e2e0e4ea11..282ad06ec846 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -205,6 +205,9 @@ static int ufs_mtk_init(struct ufs_hba *hba)
 	/* Enable runtime autosuspend */
 	hba->caps |= UFSHCD_CAP_RPM_AUTOSUSPEND;
 
+	/* Enable clock-gating */
+	hba->caps |= UFSHCD_CAP_CLK_GATING;
+
 	/*
 	 * ufshcd_vops_init() is invoked after
 	 * ufshcd_setup_clock(true) in ufshcd_hba_init() thus
@@ -293,6 +296,23 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba)
 	return ret;
 }
 
+static void ufs_mtk_setup_clk_gating(struct ufs_hba *hba)
+{
+	unsigned long flags;
+	u32 ah_ms;
+
+	if (ufshcd_is_clkgating_allowed(hba)) {
+		if (ufshcd_is_auto_hibern8_supported(hba) && hba->ahit)
+			ah_ms = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK,
+					  hba->ahit);
+		else
+			ah_ms = 10;
+		spin_lock_irqsave(hba->host->host_lock, flags);
+		hba->clk_gating.delay_ms = ah_ms + 5;
+		spin_unlock_irqrestore(hba->host->host_lock, flags);
+	}
+}
+
 static int ufs_mtk_post_link(struct ufs_hba *hba)
 {
 	/* disable device LCC */
@@ -308,6 +328,8 @@ static int ufs_mtk_post_link(struct ufs_hba *hba)
 			FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3));
 	}
 
+	ufs_mtk_setup_clk_gating(hba);
+
 	return 0;
 }
 
-- 
2.18.0

WARNING: multiple messages have this Message-ID (diff)
From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <martin.petersen@oracle.com>,
	<avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
	<pedrom.sousa@synopsys.com>, <jejb@linux.ibm.com>,
	<matthias.bgg@gmail.com>
Cc: andy.teng@mediatek.com, chun-hung.wu@mediatek.com,
	kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org,
	linux-mediatek@lists.infradead.org, peter.wang@mediatek.com,
	Stanley Chu <stanley.chu@mediatek.com>,
	linux-arm-kernel@lists.infradead.org, beanhuo@micron.com
Subject: [PATCH v1 4/4] scsi: ufs-mediatek: configure and enable clk-gating
Date: Fri, 13 Dec 2019 16:11:35 +0800	[thread overview]
Message-ID: <1576224695-22657-5-git-send-email-stanley.chu@mediatek.com> (raw)
In-Reply-To: <1576224695-22657-1-git-send-email-stanley.chu@mediatek.com>

Enable clk-gating with customized delayed timer value in
MediaTek Chipsets.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
 drivers/scsi/ufs/ufs-mediatek.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 71e2e0e4ea11..282ad06ec846 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -205,6 +205,9 @@ static int ufs_mtk_init(struct ufs_hba *hba)
 	/* Enable runtime autosuspend */
 	hba->caps |= UFSHCD_CAP_RPM_AUTOSUSPEND;
 
+	/* Enable clock-gating */
+	hba->caps |= UFSHCD_CAP_CLK_GATING;
+
 	/*
 	 * ufshcd_vops_init() is invoked after
 	 * ufshcd_setup_clock(true) in ufshcd_hba_init() thus
@@ -293,6 +296,23 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba)
 	return ret;
 }
 
+static void ufs_mtk_setup_clk_gating(struct ufs_hba *hba)
+{
+	unsigned long flags;
+	u32 ah_ms;
+
+	if (ufshcd_is_clkgating_allowed(hba)) {
+		if (ufshcd_is_auto_hibern8_supported(hba) && hba->ahit)
+			ah_ms = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK,
+					  hba->ahit);
+		else
+			ah_ms = 10;
+		spin_lock_irqsave(hba->host->host_lock, flags);
+		hba->clk_gating.delay_ms = ah_ms + 5;
+		spin_unlock_irqrestore(hba->host->host_lock, flags);
+	}
+}
+
 static int ufs_mtk_post_link(struct ufs_hba *hba)
 {
 	/* disable device LCC */
@@ -308,6 +328,8 @@ static int ufs_mtk_post_link(struct ufs_hba *hba)
 			FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3));
 	}
 
+	ufs_mtk_setup_clk_gating(hba);
+
 	return 0;
 }
 
-- 
2.18.0
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <martin.petersen@oracle.com>,
	<avri.altman@wdc.com>, <alim.akhtar@samsung.com>,
	<pedrom.sousa@synopsys.com>, <jejb@linux.ibm.com>,
	<matthias.bgg@gmail.com>
Cc: andy.teng@mediatek.com, chun-hung.wu@mediatek.com,
	kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org,
	linux-mediatek@lists.infradead.org, peter.wang@mediatek.com,
	Stanley Chu <stanley.chu@mediatek.com>,
	linux-arm-kernel@lists.infradead.org, beanhuo@micron.com
Subject: [PATCH v1 4/4] scsi: ufs-mediatek: configure and enable clk-gating
Date: Fri, 13 Dec 2019 16:11:35 +0800	[thread overview]
Message-ID: <1576224695-22657-5-git-send-email-stanley.chu@mediatek.com> (raw)
In-Reply-To: <1576224695-22657-1-git-send-email-stanley.chu@mediatek.com>

Enable clk-gating with customized delayed timer value in
MediaTek Chipsets.

Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
 drivers/scsi/ufs/ufs-mediatek.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index 71e2e0e4ea11..282ad06ec846 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -205,6 +205,9 @@ static int ufs_mtk_init(struct ufs_hba *hba)
 	/* Enable runtime autosuspend */
 	hba->caps |= UFSHCD_CAP_RPM_AUTOSUSPEND;
 
+	/* Enable clock-gating */
+	hba->caps |= UFSHCD_CAP_CLK_GATING;
+
 	/*
 	 * ufshcd_vops_init() is invoked after
 	 * ufshcd_setup_clock(true) in ufshcd_hba_init() thus
@@ -293,6 +296,23 @@ static int ufs_mtk_pre_link(struct ufs_hba *hba)
 	return ret;
 }
 
+static void ufs_mtk_setup_clk_gating(struct ufs_hba *hba)
+{
+	unsigned long flags;
+	u32 ah_ms;
+
+	if (ufshcd_is_clkgating_allowed(hba)) {
+		if (ufshcd_is_auto_hibern8_supported(hba) && hba->ahit)
+			ah_ms = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK,
+					  hba->ahit);
+		else
+			ah_ms = 10;
+		spin_lock_irqsave(hba->host->host_lock, flags);
+		hba->clk_gating.delay_ms = ah_ms + 5;
+		spin_unlock_irqrestore(hba->host->host_lock, flags);
+	}
+}
+
 static int ufs_mtk_post_link(struct ufs_hba *hba)
 {
 	/* disable device LCC */
@@ -308,6 +328,8 @@ static int ufs_mtk_post_link(struct ufs_hba *hba)
 			FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, 3));
 	}
 
+	ufs_mtk_setup_clk_gating(hba);
+
 	return 0;
 }
 
-- 
2.18.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-12-13  9:11 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-13  8:11 [PATCH v1 0/4] scsi: ufs-mediatek: provide power management Stanley Chu
2019-12-13  8:11 ` Stanley Chu
2019-12-13  8:11 ` Stanley Chu
2019-12-13  8:11 ` [PATCH v1 1/4] scsi: ufs-mediatek: introduce reference clock control Stanley Chu
2019-12-13  8:11   ` Stanley Chu
2019-12-13  8:11   ` Stanley Chu
2019-12-19 18:17   ` Alim Akhtar
2019-12-19 18:17     ` Alim Akhtar
2019-12-19 18:17     ` Alim Akhtar
2019-12-13  8:11 ` [PATCH v1 2/4] scsi: ufs: export ufshcd_auto_hibern8_update for vendor usage Stanley Chu
2019-12-13  8:11   ` Stanley Chu
2019-12-13  8:11   ` Stanley Chu
2019-12-18 23:53   ` Asutosh Das (asd)
2019-12-18 23:53     ` Asutosh Das (asd)
2019-12-18 23:53     ` Asutosh Das (asd)
2019-12-19 18:32   ` Alim Akhtar
2019-12-19 18:32     ` Alim Akhtar
2019-12-19 18:32     ` Alim Akhtar
2019-12-13  8:11 ` [PATCH v1 3/4] scsi: ufs-mediatek: configure customized auto-hibern8 timer Stanley Chu
2019-12-13  8:11   ` Stanley Chu
2019-12-13  8:11   ` Stanley Chu
2019-12-19 18:25   ` Alim Akhtar
2019-12-19 18:25     ` Alim Akhtar
2019-12-19 18:25     ` Alim Akhtar
2019-12-13  8:11 ` Stanley Chu [this message]
2019-12-13  8:11   ` [PATCH v1 4/4] scsi: ufs-mediatek: configure and enable clk-gating Stanley Chu
2019-12-13  8:11   ` Stanley Chu
2019-12-19 18:33   ` Alim Akhtar
2019-12-19 18:33     ` Alim Akhtar
2019-12-19 18:33     ` Alim Akhtar
2019-12-19 23:17 ` [PATCH v1 0/4] scsi: ufs-mediatek: provide power management Martin K. Petersen
2019-12-19 23:17   ` Martin K. Petersen
2019-12-19 23:17   ` Martin K. Petersen
2019-12-20  1:25   ` Stanley Chu
2019-12-20  1:25     ` Stanley Chu
2019-12-20  1:25     ` Stanley Chu
2019-12-20  2:25     ` Martin K. Petersen
2019-12-20  2:25       ` Martin K. Petersen
2019-12-20  2:25       ` 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=1576224695-22657-5-git-send-email-stanley.chu@mediatek.com \
    --to=stanley.chu@mediatek.com \
    --cc=alim.akhtar@samsung.com \
    --cc=andy.teng@mediatek.com \
    --cc=avri.altman@wdc.com \
    --cc=beanhuo@micron.com \
    --cc=chun-hung.wu@mediatek.com \
    --cc=jejb@linux.ibm.com \
    --cc=kuohong.wang@mediatek.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mediatek@lists.infradead.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=martin.petersen@oracle.com \
    --cc=matthias.bgg@gmail.com \
    --cc=pedrom.sousa@synopsys.com \
    --cc=peter.wang@mediatek.com \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.