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>,
<jejb@linux.ibm.com>
Cc: Stanley Chu <stanley.chu@mediatek.com>,
bvanassche@acm.org, andy.teng@mediatek.com,
chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com,
linux-kernel@vger.kernel.org, cang@codeaurora.org,
linux-mediatek@lists.infradead.org, peter.wang@mediatek.com,
matthias.bgg@gmail.com, beanhuo@micron.com,
linux-arm-kernel@lists.infradead.org, asutoshd@codeaurora.org
Subject: [PATCH v2 3/5] scsi: ufs: add ufshcd_is_auto_hibern8_enabled facility
Date: Fri, 24 Jan 2020 23:07:41 +0800 [thread overview]
Message-ID: <20200124150743.15110-4-stanley.chu@mediatek.com> (raw)
In-Reply-To: <20200124150743.15110-1-stanley.chu@mediatek.com>
Auto-Hibern8 may be disabled by some vendors or sysfs
in runtime even if Auto-Hibern8 capability is supported
by host. Thus provide a way to detect if Auto-Hibern8 is
actually enabled for future related handlings.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
drivers/scsi/ufs/ufshcd.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 2ae6c7c8528c..81c71a3e3474 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -55,6 +55,7 @@
#include <linux/clk.h>
#include <linux/completion.h>
#include <linux/regulator/consumer.h>
+#include <linux/bitfield.h>
#include "unipro.h"
#include <asm/irq.h>
@@ -773,6 +774,11 @@ static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba)
return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT);
}
+static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba)
+{
+ return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit) ? true : false;
+}
+
#define ufshcd_writel(hba, val, reg) \
writel((val), (hba)->mmio_base + (reg))
#define ufshcd_readl(hba, reg) \
--
2.18.0
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next prev parent reply other threads:[~2020-01-24 15:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-24 15:07 [PATCH v2 0/5] MediaTek UFS vendor implemenation part III and Auto-Hibern8 fix Stanley Chu
2020-01-24 15:07 ` [PATCH v2 1/5] scsi: ufs-mediatek: ensure UniPro is not powered down before linkup Stanley Chu
2020-01-24 15:07 ` [PATCH v2 2/5] scsi: ufs-mediatek: support linkoff state during suspend Stanley Chu
2020-01-24 15:07 ` Stanley Chu [this message]
2020-01-28 15:38 ` [EXT] [PATCH v2 3/5] scsi: ufs: add ufshcd_is_auto_hibern8_enabled facility Bean Huo (beanhuo)
2020-01-24 15:07 ` [PATCH v2 4/5] scsi: ufs: fix auto-hibern8 error detection Stanley Chu
2020-01-28 15:52 ` [EXT] " Bean Huo (beanhuo)
2020-01-29 6:33 ` Stanley Chu
2020-01-24 15:07 ` [PATCH v2 5/5] scsi: ufs-mediatek: gate ref-clk during Auto-Hibern8 Stanley Chu
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