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Date: Mon, 24 Sep 2018 10:24:32 -0700
From: Bjorn Andersson <bjorn.andersson@...aro.org>
To: Vivek Gautam <vivek.gautam@...eaurora.org>
Cc: kishon@...com, vinholikatti@...il.com, jejb@...ux.vnet.ibm.com,
martin.petersen@...cle.com, linux-kernel@...r.kernel.org,
linux-scsi@...r.kernel.org, subhashj@...eaurora.org,
evgreen@...omium.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 2/3] scsi/ufs: qcom: Remove ufs_qcom_phy_*() calls from
host
On Tue 04 Sep 03:17 PDT 2018, Vivek Gautam wrote:
> The host makes direct calls into phy using ufs_qcom_phy_*()
> APIs. These APIs are only defined for 20nm qcom-ufs-qmp phy
> which is not being used by any architecture as yet. Future
> architectures too are not going to use 20nm ufs phy.
> So remove these ufs_qcom_phy_*() calls from host to let further
> change declare the 20nm phy as broken.
> Also remove couple of stale enum defines for ufs phy.
>
> Signed-off-by: Vivek Gautam <vivek.gautam@...eaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Regards,
Bjorn
> ---
> drivers/phy/qualcomm/phy-qcom-ufs-i.h | 2 +-
> drivers/scsi/ufs/ufs-qcom.c | 28 +---------------------------
> drivers/scsi/ufs/ufs-qcom.h | 5 -----
> include/linux/phy/phy-qcom-ufs.h | 24 ------------------------
> 4 files changed, 2 insertions(+), 57 deletions(-)
> delete mode 100644 include/linux/phy/phy-qcom-ufs.h
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-ufs-i.h b/drivers/phy/qualcomm/phy-qcom-ufs-i.h
> index 822c83b8efcd..681644e43248 100644
> --- a/drivers/phy/qualcomm/phy-qcom-ufs-i.h
> +++ b/drivers/phy/qualcomm/phy-qcom-ufs-i.h
> @@ -17,9 +17,9 @@
>
> #include <linux/module.h>
> #include <linux/clk.h>
> +#include <linux/phy/phy.h>
> #include <linux/regulator/consumer.h>
> #include <linux/slab.h>
> -#include <linux/phy/phy-qcom-ufs.h>
> #include <linux/platform_device.h>
> #include <linux/io.h>
> #include <linux/delay.h>
> diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
> index 75ee5906b966..3dc4501c6945 100644
> --- a/drivers/scsi/ufs/ufs-qcom.c
> +++ b/drivers/scsi/ufs/ufs-qcom.c
> @@ -16,7 +16,6 @@
> #include <linux/of.h>
> #include <linux/platform_device.h>
> #include <linux/phy/phy.h>
> -#include <linux/phy/phy-qcom-ufs.h>
>
> #include "ufshcd.h"
> #include "ufshcd-pltfrm.h"
> @@ -189,22 +188,9 @@ static int ufs_qcom_init_lane_clks(struct ufs_qcom_host *host)
>
> static int ufs_qcom_link_startup_post_change(struct ufs_hba *hba)
> {
> - struct ufs_qcom_host *host = ufshcd_get_variant(hba);
> - struct phy *phy = host->generic_phy;
> u32 tx_lanes;
> - int err = 0;
> -
> - err = ufs_qcom_get_connected_tx_lanes(hba, &tx_lanes);
> - if (err)
> - goto out;
>
> - err = ufs_qcom_phy_set_tx_lane_enable(phy, tx_lanes);
> - if (err)
> - dev_err(hba->dev, "%s: ufs_qcom_phy_set_tx_lane_enable failed\n",
> - __func__);
> -
> -out:
> - return err;
> + return ufs_qcom_get_connected_tx_lanes(hba, &tx_lanes);
> }
>
> static int ufs_qcom_check_hibern8(struct ufs_hba *hba)
> @@ -932,10 +918,8 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
> {
> u32 val;
> struct ufs_qcom_host *host = ufshcd_get_variant(hba);
> - struct phy *phy = host->generic_phy;
> struct ufs_qcom_dev_params ufs_qcom_cap;
> int ret = 0;
> - int res = 0;
>
> if (!dev_req_params) {
> pr_err("%s: incoming dev_req_params is NULL\n", __func__);
> @@ -1002,12 +986,6 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
> }
>
> val = ~(MAX_U32 << dev_req_params->lane_tx);
> - res = ufs_qcom_phy_set_tx_lane_enable(phy, val);
> - if (res) {
> - dev_err(hba->dev, "%s: ufs_qcom_phy_set_tx_lane_enable() failed res = %d\n",
> - __func__, res);
> - ret = res;
> - }
>
> /* cache the power mode parameters to use internally */
> memcpy(&host->dev_req_params,
> @@ -1264,10 +1242,6 @@ static int ufs_qcom_init(struct ufs_hba *hba)
> }
> }
>
> - /* update phy revision information before calling phy_init() */
> - ufs_qcom_phy_save_controller_version(host->generic_phy,
> - host->hw_ver.major, host->hw_ver.minor, host->hw_ver.step);
> -
> err = ufs_qcom_init_lane_clks(host);
> if (err)
> goto out_variant_clear;
> diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h
> index 295f4bef6a0e..c114826316eb 100644
> --- a/drivers/scsi/ufs/ufs-qcom.h
> +++ b/drivers/scsi/ufs/ufs-qcom.h
> @@ -129,11 +129,6 @@ enum {
> MASK_CLK_NS_REG = 0xFFFC00,
> };
>
> -enum ufs_qcom_phy_init_type {
> - UFS_PHY_INIT_FULL,
> - UFS_PHY_INIT_CFG_RESTORE,
> -};
> -
> /* QCOM UFS debug print bit mask */
> #define UFS_QCOM_DBG_PRINT_REGS_EN BIT(0)
> #define UFS_QCOM_DBG_PRINT_ICE_REGS_EN BIT(1)
> diff --git a/include/linux/phy/phy-qcom-ufs.h b/include/linux/phy/phy-qcom-ufs.h
> deleted file mode 100644
> index 9dd85071bcce..000000000000
> --- a/include/linux/phy/phy-qcom-ufs.h
> +++ /dev/null
> @@ -1,24 +0,0 @@
> -/*
> - * Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
> - *
> - * This program is free software; you can redistribute it and/or modify
> - * it under the terms of the GNU General Public License version 2 and
> - * only version 2 as published by the Free Software Foundation.
> - *
> - * This program is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> - * GNU General Public License for more details.
> - *
> - */
> -
> -#ifndef PHY_QCOM_UFS_H_
> -#define PHY_QCOM_UFS_H_
> -
> -#include "phy.h"
> -
> -int ufs_qcom_phy_set_tx_lane_enable(struct phy *phy, u32 tx_lanes);
> -void ufs_qcom_phy_save_controller_version(struct phy *phy,
> - u8 major, u16 minor, u16 step);
> -
> -#endif /* PHY_QCOM_UFS_H_ */
> --
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
> of Code Aurora Forum, hosted by The Linux Foundation
>
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