linux-kernel - [PATCH V1 1/3] scsi: ufs: export api for use in vendor file

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Date:   Thu, 28 Jan 2021 22:24:57 +0530
From:   Nitin Rawat <nitirawa@...eaurora.org>
To:     asutoshd@...eaurora.org, cang@...eaurora.org,
        stummala@...eaurora.org, vbadigan@...eaurora.org,
        alim.akhtar@...sung.com, avri.altman@....com, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, stanley.chu@...iatek.com,
        beanhuo@...ron.com
Cc:     bvanassche@....org, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Nitin Rawat <nitirawa@...eaurora.org>,
        "Bao D . Nguyen" <nguyenb@...eaurora.org>
Subject: [PATCH V1 1/3] scsi: ufs: export api for use in vendor file

Exporting functions ufshcd_set_dev_pwr_mode, ufshcd_disable_vreg
and ufshcd_enable_vreg so that vendor drivers can make use of
them in setting vendor specific regulator setting
in vendor specific file.

Signed-off-by: Nitin Rawat <nitirawa@...eaurora.org>
Signed-off-by: Bao D. Nguyen <nguyenb@...eaurora.org>
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>
---
 drivers/scsi/ufs/ufshcd.c | 9 ++++++---
 drivers/scsi/ufs/ufshcd.h | 4 ++++
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 9c691e4..000a03a 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8091,7 +8091,7 @@ static int ufshcd_config_vreg(struct device *dev,
 	return ret;
 }

-static int ufshcd_enable_vreg(struct device *dev, struct ufs_vreg *vreg)
+int ufshcd_enable_vreg(struct device *dev, struct ufs_vreg *vreg)
 {
 	int ret = 0;

@@ -8110,8 +8110,9 @@ static int ufshcd_enable_vreg(struct device *dev, struct ufs_vreg *vreg)
 out:
 	return ret;
 }
+EXPORT_SYMBOL(ufshcd_enable_vreg);

-static int ufshcd_disable_vreg(struct device *dev, struct ufs_vreg *vreg)
+int ufshcd_disable_vreg(struct device *dev, struct ufs_vreg *vreg)
 {
 	int ret = 0;

@@ -8131,6 +8132,7 @@ static int ufshcd_disable_vreg(struct device *dev, struct ufs_vreg *vreg)
 out:
 	return ret;
 }
+EXPORT_SYMBOL(ufshcd_disable_vreg);

 static int ufshcd_setup_vreg(struct ufs_hba *hba, bool on)
 {
@@ -8455,7 +8457,7 @@ ufshcd_send_request_sense(struct ufs_hba *hba, struct scsi_device *sdp)
  * Returns 0 if requested power mode is set successfully
  * Returns non-zero if failed to set the requested power mode
  */
-static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
+int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
 				     enum ufs_dev_pwr_mode pwr_mode)
 {
 	unsigned char cmd[6] = { START_STOP };
@@ -8513,6 +8515,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
 	hba->host->eh_noresume = 0;
 	return ret;
 }
+EXPORT_SYMBOL(ufshcd_set_dev_pwr_mode);

 static int ufshcd_link_state_transition(struct ufs_hba *hba,
 					enum uic_link_state req_link_state,
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index ee61f82..1410c95 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -997,6 +997,10 @@ extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
 			       u32 *mib_val, u8 peer);
 extern int ufshcd_config_pwr_mode(struct ufs_hba *hba,
 			struct ufs_pa_layer_attr *desired_pwr_mode);
+extern int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
+						enum ufs_dev_pwr_mode pwr_mode);
+extern int ufshcd_enable_vreg(struct device *dev, struct ufs_vreg *vreg);
+extern int ufshcd_disable_vreg(struct device *dev, struct ufs_vreg *vreg);

 /* UIC command interfaces for DME primitives */
 #define DME_LOCAL	0
--
2.7.4