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Commit a27ae1c7 authored by Asutosh Das's avatar Asutosh Das
Browse files

phy: phy-qcom-ufs: add receive line configuration 



This is a snapshot of UFS phy driver taken as of commit
<Iece7757565b>
("ufs: Porting UFS driver's changes from kernel msm-4.14
to msm-kona")

Exposes a receive line configuration function.
This is to make sure that the RX LineCfg is enabled
before link-startup.

Change-Id: I73eb0caf65f14d7444c1c90228d2384e028ddbdc
Signed-off-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
parent e3225c64

drivers/phy/qualcomm/phy-qcom-ufs-i.h

+4 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/io.h>

#include <linux/delay.h>

#include <linux/iopoll.h>

#include <linux/phy/phy-qcom-ufs.h>



#define UFS_QCOM_PHY_CAL_ENTRY(reg, val)	\

	{				\
@@ -104,6 +105,8 @@ struct ufs_qcom_phy { 
 * @set_tx_lane_enable: pointer to a function that enable tx lanes

 * @power_control: pointer to a function that controls analog rail of phy

 * and writes to QSERDES_RX_SIGDET_CNTRL attribute

 * @ctrl_rx_linecfg: pointer to a function that controls the enable/disable of

 * Rx line config

 */

struct ufs_qcom_phy_specific_ops {

	int (*calibrate)(struct ufs_qcom_phy *ufs_qcom_phy, bool is_rate_B);
@@ -111,6 +114,7 @@ struct ufs_qcom_phy_specific_ops { 
	int (*is_physical_coding_sublayer_ready)(struct ufs_qcom_phy *phy);

	void (*set_tx_lane_enable)(struct ufs_qcom_phy *phy, u32 val);

	void (*power_control)(struct ufs_qcom_phy *phy, bool val);

	void (*ctrl_rx_linecfg)(struct ufs_qcom_phy *phy, bool ctrl);

};



struct ufs_qcom_phy *get_ufs_qcom_phy(struct phy *generic_phy);

drivers/phy/qualcomm/phy-qcom-ufs.c

+11 −10
Original line number Diff line number Diff line
@@ -489,22 +489,14 @@ static int ufs_qcom_phy_start_serdes(struct ufs_qcom_phy *ufs_qcom_phy) 
	return ret;

}



int ufs_qcom_phy_set_tx_lane_enable(struct phy *generic_phy, u32 tx_lanes)

void ufs_qcom_phy_set_tx_lane_enable(struct phy *generic_phy, u32 tx_lanes)

{

	struct ufs_qcom_phy *ufs_qcom_phy = get_ufs_qcom_phy(generic_phy);

	int ret = 0;



	if (!ufs_qcom_phy->phy_spec_ops->set_tx_lane_enable) {

		dev_err(ufs_qcom_phy->dev, "%s: set_tx_lane_enable() callback is not supported\n",

			__func__);

		ret = -ENOTSUPP;

	} else {

	if (ufs_qcom_phy->phy_spec_ops->set_tx_lane_enable)

		ufs_qcom_phy->phy_spec_ops->set_tx_lane_enable(ufs_qcom_phy,

							       tx_lanes);

}



	return ret;

}

EXPORT_SYMBOL_GPL(ufs_qcom_phy_set_tx_lane_enable);



void ufs_qcom_phy_save_controller_version(struct phy *generic_phy,
@@ -642,6 +634,15 @@ int ufs_qcom_phy_power_off(struct phy *generic_phy) 
}

EXPORT_SYMBOL_GPL(ufs_qcom_phy_power_off);



void ufs_qcom_phy_ctrl_rx_linecfg(struct phy *generic_phy, bool ctrl)

{

	struct ufs_qcom_phy *ufs_qcom_phy = get_ufs_qcom_phy(generic_phy);



	if (ufs_qcom_phy->phy_spec_ops->ctrl_rx_linecfg)

		ufs_qcom_phy->phy_spec_ops->ctrl_rx_linecfg(ufs_qcom_phy, ctrl);

}

EXPORT_SYMBOL(ufs_qcom_phy_ctrl_rx_linecfg);



MODULE_AUTHOR("Yaniv Gardi <ygardi@codeaurora.org>");

MODULE_AUTHOR("Vivek Gautam <vivek.gautam@codeaurora.org>");

MODULE_DESCRIPTION("Universal Flash Storage (UFS) QCOM PHY");

include/linux/phy/phy-qcom-ufs.h

0 → 100644
+15 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2013-2019, Linux Foundation. All rights reserved.

 */



#ifndef PHY_QCOM_UFS_H_

#define PHY_QCOM_UFS_H_



#include "phy.h"



void ufs_qcom_phy_ctrl_rx_linecfg(struct phy *generic_phy, bool ctrl);

void ufs_qcom_phy_set_tx_lane_enable(struct phy *generic_phy, u32 tx_lanes);



#endif /* PHY_QCOM_UFS_H_ */