All of lore.kernel.org
 help / color / mirror / Atom feed
From: Stanley Chu <stanley.chu@mediatek.com>
To: <linux-scsi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<martin.petersen@oracle.com>, <avri.altman@wdc.com>,
	<alim.akhtar@samsung.com>, <jejb@linux.ibm.com>,
	<bvanassche@acm.org>
Cc: <peter.wang@mediatek.com>, <chun-hung.wu@mediatek.com>,
	<alice.chao@mediatek.com>, <powen.kao@mediatek.com>,
	<mason.zhang@mediatek.com>, <qilin.tan@mediatek.com>,
	<lin.gui@mediatek.com>, <eddie.huang@mediatek.com>,
	<tun-yu.yu@mediatek.com>, <cc.chou@mediatek.com>,
	<chaotian.jing@mediatek.com>, <jiajie.hao@mediatek.com>,
	<stanley.chu@mediatek.com>
Subject: [PATCH v2 6/8] scsi: ufs-mediatek: Support host power control
Date: Thu, 23 Jun 2022 11:50:50 +0800	[thread overview]
Message-ID: <20220623035052.18802-7-stanley.chu@mediatek.com> (raw)
In-Reply-To: <20220623035052.18802-1-stanley.chu@mediatek.com>

From: Po-Wen Kao <powen.kao@mediatek.com>

Add interfaces for controlling the host power to
optimize the power consumption in MediaTek UFS platforms.

Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
---
 drivers/ufs/host/ufs-mediatek.c |  5 +++++
 drivers/ufs/host/ufs-mediatek.h | 12 ++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c
index 348966dbad78..085ba05ff4d4 100755
--- a/drivers/ufs/host/ufs-mediatek.c
+++ b/drivers/ufs/host/ufs-mediatek.c
@@ -1190,6 +1190,8 @@ static int ufs_mtk_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
 	if (ufshcd_is_link_off(hba))
 		ufs_mtk_device_reset_ctrl(0, res);
 
+	ufs_mtk_host_pwr_ctrl(HOST_PWR_HCI, false, res);
+
 	return 0;
 fail:
 	/*
@@ -1204,10 +1206,13 @@ static int ufs_mtk_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
 static int ufs_mtk_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
 {
 	int err;
+	struct arm_smccc_res res;
 
 	if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL)
 		ufs_mtk_dev_vreg_set_lpm(hba, false);
 
+	ufs_mtk_host_pwr_ctrl(HOST_PWR_HCI, true, res);
+
 	err = ufs_mtk_mphy_power_on(hba, true);
 	if (err)
 		goto fail;
diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h
index c12ceb4d941f..cdf40851e626 100755
--- a/drivers/ufs/host/ufs-mediatek.h
+++ b/drivers/ufs/host/ufs-mediatek.h
@@ -84,6 +84,7 @@ enum {
 #define UFS_MTK_SIP_DEVICE_RESET          BIT(1)
 #define UFS_MTK_SIP_CRYPTO_CTRL           BIT(2)
 #define UFS_MTK_SIP_REF_CLK_NOTIFICATION  BIT(3)
+#define UFS_MTK_SIP_HOST_PWR_CTRL         BIT(5)
 #define UFS_MTK_SIP_GET_VCC_NUM           BIT(6)
 #define UFS_MTK_SIP_DEVICE_PWR_CTRL       BIT(7)
 
@@ -156,6 +157,14 @@ enum ufs_mtk_vcc_num {
 	UFS_VCC_MAX
 };
 
+/*
+ * Host Power Control options
+ */
+enum {
+	HOST_PWR_HCI = 0,
+	HOST_PWR_MPHY
+};
+
 /*
  * SMC call wrapper function
  */
@@ -195,6 +204,9 @@ static void _ufs_mtk_smc(struct ufs_mtk_smc_arg s)
 #define ufs_mtk_device_reset_ctrl(high, res) \
 	ufs_mtk_smc(UFS_MTK_SIP_DEVICE_RESET, &(res), high)
 
+#define ufs_mtk_host_pwr_ctrl(opt, on, res) \
+	ufs_mtk_smc(UFS_MTK_SIP_HOST_PWR_CTRL, &(res), opt, on)
+
 #define ufs_mtk_get_vcc_num(res) \
 	ufs_mtk_smc(UFS_MTK_SIP_GET_VCC_NUM, &(res))
 
-- 
2.18.0


  parent reply	other threads:[~2022-06-23  4:41 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-23  3:50 [PATCH v2 0/8] Provide features and fixes in MediaTek UFS platform Stanley Chu
2022-06-23  3:50 ` [PATCH v2 1/8] scsi: ufs-mediatek: Fix build warnings Stanley Chu
2022-06-23  3:50 ` [PATCH v2 2/8] scsi: ufs-mediatek: Always add delays for VCC operations Stanley Chu
2022-06-23  3:50 ` [PATCH v2 3/8] scsi: ufs-mediatek: Prevent host hang by setting CLK_CG early Stanley Chu
2022-06-23  3:50 ` [PATCH v2 4/8] scsi: ufs-mediatek: Add stage information for ref-clk control Stanley Chu
2022-06-23  3:50 ` [PATCH v2 5/8] scsi: ufs-mediatek: Disable reset confirm feature by UniPro Stanley Chu
2022-06-23  3:50 ` Stanley Chu [this message]
2022-06-23  3:50 ` [PATCH v2 7/8] scsi: ufs-mediatek: Support performance boosting Stanley Chu
2022-06-23  3:50 ` [PATCH v2 8/8] scsi: ufs-mediatek: Fix invalid access to vccqx Stanley Chu
2022-06-23 13:15 ` [PATCH v2 0/8] Provide features and fixes in MediaTek UFS platform Bart Van Assche
2022-06-28  3:18 ` Martin K. Petersen
2022-07-07 21:47 ` 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=20220623035052.18802-7-stanley.chu@mediatek.com \
    --to=stanley.chu@mediatek.com \
    --cc=alice.chao@mediatek.com \
    --cc=alim.akhtar@samsung.com \
    --cc=avri.altman@wdc.com \
    --cc=bvanassche@acm.org \
    --cc=cc.chou@mediatek.com \
    --cc=chaotian.jing@mediatek.com \
    --cc=chun-hung.wu@mediatek.com \
    --cc=eddie.huang@mediatek.com \
    --cc=jejb@linux.ibm.com \
    --cc=jiajie.hao@mediatek.com \
    --cc=lin.gui@mediatek.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=martin.petersen@oracle.com \
    --cc=mason.zhang@mediatek.com \
    --cc=peter.wang@mediatek.com \
    --cc=powen.kao@mediatek.com \
    --cc=qilin.tan@mediatek.com \
    --cc=tun-yu.yu@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.