From: Asutosh Das <asutoshd@codeaurora.org>
To: Avri.Altman@wdc.com, cang@codeaurora.org,
martin.petersen@oracle.com, linux-scsi@vger.kernel.org
Cc: Asutosh Das <asutoshd@codeaurora.org>,
linux-arm-msm@vger.kernel.org, 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>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v2 3/3] scsi: ufs-qcom: Override devfreq parameters
Date: Wed, 25 Mar 2020 11:29:02 -0700 [thread overview]
Message-ID: <b6875729b6072134985c9113a820cf60a2af22e7.1585160616.git.asutoshd@codeaurora.org> (raw)
In-Reply-To: <cover.1585160616.git.asutoshd@codeaurora.org>
In-Reply-To: <cover.1585160616.git.asutoshd@codeaurora.org>
Override devfreq parameters for power-performance
trade-off.
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
---
drivers/scsi/ufs/ufs-qcom.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 6115ac6..19aa5c4 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -10,6 +10,7 @@
#include <linux/phy/phy.h>
#include <linux/gpio/consumer.h>
#include <linux/reset-controller.h>
+#include <linux/devfreq.h>
#include "ufshcd.h"
#include "ufshcd-pltfrm.h"
@@ -1689,6 +1690,29 @@ static void ufs_qcom_device_reset(struct ufs_hba *hba)
usleep_range(10, 15);
}
+#if IS_ENABLED(CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND)
+static void ufs_qcom_config_scaling_param(struct ufs_hba *hba,
+ struct devfreq_dev_profile *p,
+ void *data)
+{
+ static struct devfreq_simple_ondemand_data *d;
+
+ if (!data)
+ return;
+
+ d = (struct devfreq_simple_ondemand_data *)data;
+ p->polling_ms = 60;
+ d->upthreshold = 70;
+ d->downdifferential = 5;
+}
+#else
+static void ufs_qcom_config_scaling_param(struct ufs_hba *hba,
+ struct devfreq_dev_profile *p,
+ void *data)
+{
+}
+#endif
+
/**
* struct ufs_hba_qcom_vops - UFS QCOM specific variant operations
*
@@ -1710,6 +1734,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
.resume = ufs_qcom_resume,
.dbg_register_dump = ufs_qcom_dump_dbg_regs,
.device_reset = ufs_qcom_device_reset,
+ .config_scaling_param = ufs_qcom_config_scaling_param,
};
/**
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
next prev parent reply other threads:[~2020-03-25 18:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-25 18:28 [PATCH v2 0/3] UFS Clock Scaling fixes and enhancements Asutosh Das
2020-03-25 18:29 ` [PATCH v2 1/3] scsi: ufshcd: Update the set frequency to devfreq Asutosh Das
2020-05-25 22:19 ` Jeffrey Hugo
2020-05-26 17:17 ` Asutosh Das (asd)
2020-05-28 13:53 ` Jeffrey Hugo
2020-03-25 18:29 ` [PATCH v2 2/3] scsi: ufshcd: Let vendor override devfreq parameters Asutosh Das
2020-03-25 18:29 ` Asutosh Das [this message]
2020-03-25 23:18 ` [PATCH v2 0/3] UFS Clock Scaling fixes and enhancements Avri Altman
2020-03-27 2:18 ` Martin K. Petersen
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