1 files changed, 0 insertions, 343 deletions
diff --git a/drivers/scsi/ufs/cdns-pltfrm.c b/drivers/scsi/ufs/cdns-pltfrm.c
deleted file mode 100644
index e05c0ae64eea..000000000000
--- a/drivers/scsi/ufs/cdns-pltfrm.c
+++ /dev/null
@@ -1,343 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Platform UFS Host driver for Cadence controller
- *
- * Copyright (C) 2018 Cadence Design Systems, Inc.
- *
- * Authors:
- *	Jan Kotas <jank@cadence.com>
- *
- */
-
-#include <linux/clk.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/time.h>
-
-#include "ufshcd-pltfrm.h"
-
-#define CDNS_UFS_REG_HCLKDIV	0xFC
-#define CDNS_UFS_REG_PHY_XCFGD1	0x113C
-#define CDNS_UFS_MAX_L4_ATTRS 12
-
-struct cdns_ufs_host {
-	/**
-	 * cdns_ufs_dme_attr_val - for storing L4 attributes
-	 */
-	u32 cdns_ufs_dme_attr_val[CDNS_UFS_MAX_L4_ATTRS];
-};
-
-/**
- * cdns_ufs_get_l4_attr - get L4 attributes on local side
- * @hba: per adapter instance
- *
- */
-static void cdns_ufs_get_l4_attr(struct ufs_hba *hba)
-{
-	struct cdns_ufs_host *host = ufshcd_get_variant(hba);
-
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_PEERDEVICEID),
-		       &host->cdns_ufs_dme_attr_val[0]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_PEERCPORTID),
-		       &host->cdns_ufs_dme_attr_val[1]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_TRAFFICCLASS),
-		       &host->cdns_ufs_dme_attr_val[2]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_PROTOCOLID),
-		       &host->cdns_ufs_dme_attr_val[3]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_CPORTFLAGS),
-		       &host->cdns_ufs_dme_attr_val[4]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_TXTOKENVALUE),
-		       &host->cdns_ufs_dme_attr_val[5]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_RXTOKENVALUE),
-		       &host->cdns_ufs_dme_attr_val[6]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_LOCALBUFFERSPACE),
-		       &host->cdns_ufs_dme_attr_val[7]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_PEERBUFFERSPACE),
-		       &host->cdns_ufs_dme_attr_val[8]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_CREDITSTOSEND),
-		       &host->cdns_ufs_dme_attr_val[9]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_CPORTMODE),
-		       &host->cdns_ufs_dme_attr_val[10]);
-	ufshcd_dme_get(hba, UIC_ARG_MIB(T_CONNECTIONSTATE),
-		       &host->cdns_ufs_dme_attr_val[11]);
-}
-
-/**
- * cdns_ufs_set_l4_attr - set L4 attributes on local side
- * @hba: per adapter instance
- *
- */
-static void cdns_ufs_set_l4_attr(struct ufs_hba *hba)
-{
-	struct cdns_ufs_host *host = ufshcd_get_variant(hba);
-
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_CONNECTIONSTATE), 0);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERDEVICEID),
-		       host->cdns_ufs_dme_attr_val[0]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERCPORTID),
-		       host->cdns_ufs_dme_attr_val[1]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_TRAFFICCLASS),
-		       host->cdns_ufs_dme_attr_val[2]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_PROTOCOLID),
-		       host->cdns_ufs_dme_attr_val[3]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_CPORTFLAGS),
-		       host->cdns_ufs_dme_attr_val[4]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_TXTOKENVALUE),
-		       host->cdns_ufs_dme_attr_val[5]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_RXTOKENVALUE),
-		       host->cdns_ufs_dme_attr_val[6]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_LOCALBUFFERSPACE),
-		       host->cdns_ufs_dme_attr_val[7]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERBUFFERSPACE),
-		       host->cdns_ufs_dme_attr_val[8]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_CREDITSTOSEND),
-		       host->cdns_ufs_dme_attr_val[9]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_CPORTMODE),
-		       host->cdns_ufs_dme_attr_val[10]);
-	ufshcd_dme_set(hba, UIC_ARG_MIB(T_CONNECTIONSTATE),
-		       host->cdns_ufs_dme_attr_val[11]);
-}
-
-/**
- * cdns_ufs_set_hclkdiv()
- * Sets HCLKDIV register value based on the core_clk
- * @hba: host controller instance
- *
- * Return zero for success and non-zero for failure
- */
-static int cdns_ufs_set_hclkdiv(struct ufs_hba *hba)
-{
-	struct ufs_clk_info *clki;
-	struct list_head *head = &hba->clk_list_head;
-	unsigned long core_clk_rate = 0;
-	u32 core_clk_div = 0;
-
-	if (list_empty(head))
-		return 0;
-
-	list_for_each_entry(clki, head, list) {
-		if (IS_ERR_OR_NULL(clki->clk))
-			continue;
-		if (!strcmp(clki->name, "core_clk"))
-			core_clk_rate = clk_get_rate(clki->clk);
-	}
-
-	if (!core_clk_rate) {
-		dev_err(hba->dev, "%s: unable to find core_clk rate\n",
-			__func__);
-		return -EINVAL;
-	}
-
-	core_clk_div = core_clk_rate / USEC_PER_SEC;
-
-	ufshcd_writel(hba, core_clk_div, CDNS_UFS_REG_HCLKDIV);
-	/**
-	 * Make sure the register was updated,
-	 * UniPro layer will not work with an incorrect value.
-	 */
-	mb();
-
-	return 0;
-}
-
-/**
- * cdns_ufs_hce_enable_notify()
- * Called before and after HCE enable bit is set.
- * @hba: host controller instance
- * @status: notify stage (pre, post change)
- *
- * Return zero for success and non-zero for failure
- */
-static int cdns_ufs_hce_enable_notify(struct ufs_hba *hba,
-				      enum ufs_notify_change_status status)
-{
-	if (status != PRE_CHANGE)
-		return 0;
-
-	return cdns_ufs_set_hclkdiv(hba);
-}
-
-/**
- * cdns_ufs_hibern8_notify()
- * Called around hibern8 enter/exit.
- * @hba: host controller instance
- * @cmd: UIC Command
- * @status: notify stage (pre, post change)
- *
- */
-static void cdns_ufs_hibern8_notify(struct ufs_hba *hba, enum uic_cmd_dme cmd,
-				    enum ufs_notify_change_status status)
-{
-	if (status == PRE_CHANGE && cmd == UIC_CMD_DME_HIBER_ENTER)
-		cdns_ufs_get_l4_attr(hba);
-	if (status == POST_CHANGE && cmd == UIC_CMD_DME_HIBER_EXIT)
-		cdns_ufs_set_l4_attr(hba);
-}
-
-/**
- * cdns_ufs_link_startup_notify()
- * Called before and after Link startup is carried out.
- * @hba: host controller instance
- * @status: notify stage (pre, post change)
- *
- * Return zero for success and non-zero for failure
- */
-static int cdns_ufs_link_startup_notify(struct ufs_hba *hba,
-					enum ufs_notify_change_status status)
-{
-	if (status != PRE_CHANGE)
-		return 0;
-
-	/*
-	 * Some UFS devices have issues if LCC is enabled.
-	 * So we are setting PA_Local_TX_LCC_Enable to 0
-	 * before link startup which will make sure that both host
-	 * and device TX LCC are disabled once link startup is
-	 * completed.
-	 */
-	ufshcd_disable_host_tx_lcc(hba);
-
-	/*
-	 * Disabling Autohibern8 feature in cadence UFS
-	 * to mask unexpected interrupt trigger.
-	 */
-	hba->ahit = 0;
-
-	return 0;
-}
-
-/**
- * cdns_ufs_init - performs additional ufs initialization
- * @hba: host controller instance
- *
- * Returns status of initialization
- */
-static int cdns_ufs_init(struct ufs_hba *hba)
-{
-	int status = 0;
-	struct cdns_ufs_host *host;
-	struct device *dev = hba->dev;
-
-	host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL);
-
-	if (!host)
-		return -ENOMEM;
-	ufshcd_set_variant(hba, host);
-
-	status = ufshcd_vops_phy_initialization(hba);
-
-	return status;
-}
-
-/**
- * cdns_ufs_m31_16nm_phy_initialization - performs m31 phy initialization
- * @hba: host controller instance
- *
- * Always returns 0
- */
-static int cdns_ufs_m31_16nm_phy_initialization(struct ufs_hba *hba)
-{
-	u32 data;
-
-	/* Increase RX_Advanced_Min_ActivateTime_Capability */
-	data = ufshcd_readl(hba, CDNS_UFS_REG_PHY_XCFGD1);
-	data |= BIT(24);
-	ufshcd_writel(hba, data, CDNS_UFS_REG_PHY_XCFGD1);
-
-	return 0;
-}
-
-static const struct ufs_hba_variant_ops cdns_ufs_pltfm_hba_vops = {
-	.name = "cdns-ufs-pltfm",
-	.init = cdns_ufs_init,
-	.hce_enable_notify = cdns_ufs_hce_enable_notify,
-	.link_startup_notify = cdns_ufs_link_startup_notify,
-	.hibern8_notify = cdns_ufs_hibern8_notify,
-};
-
-static const struct ufs_hba_variant_ops cdns_ufs_m31_16nm_pltfm_hba_vops = {
-	.name = "cdns-ufs-pltfm",
-	.init = cdns_ufs_init,
-	.hce_enable_notify = cdns_ufs_hce_enable_notify,
-	.link_startup_notify = cdns_ufs_link_startup_notify,
-	.phy_initialization = cdns_ufs_m31_16nm_phy_initialization,
-	.hibern8_notify = cdns_ufs_hibern8_notify,
-};
-
-static const struct of_device_id cdns_ufs_of_match[] = {
-	{
-		.compatible = "cdns,ufshc",
-		.data =  &cdns_ufs_pltfm_hba_vops,
-	},
-	{
-		.compatible = "cdns,ufshc-m31-16nm",
-		.data =  &cdns_ufs_m31_16nm_pltfm_hba_vops,
-	},
-	{ },
-};
-
-MODULE_DEVICE_TABLE(of, cdns_ufs_of_match);
-
-/**
- * cdns_ufs_pltfrm_probe - probe routine of the driver
- * @pdev: pointer to platform device handle
- *
- * Return zero for success and non-zero for failure
- */
-static int cdns_ufs_pltfrm_probe(struct platform_device *pdev)
-{
-	int err;
-	const struct of_device_id *of_id;
-	struct ufs_hba_variant_ops *vops;
-	struct device *dev = &pdev->dev;
-
-	of_id = of_match_node(cdns_ufs_of_match, dev->of_node);
-	vops = (struct ufs_hba_variant_ops *)of_id->data;
-
-	/* Perform generic probe */
-	err = ufshcd_pltfrm_init(pdev, vops);
-	if (err)
-		dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
-
-	return err;
-}
-
-/**
- * cdns_ufs_pltfrm_remove - removes the ufs driver
- * @pdev: pointer to platform device handle
- *
- * Always returns 0
- */
-static int cdns_ufs_pltfrm_remove(struct platform_device *pdev)
-{
-	struct ufs_hba *hba =  platform_get_drvdata(pdev);
-
-	ufshcd_remove(hba);
-	return 0;
-}
-
-static const struct dev_pm_ops cdns_ufs_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
-	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
-	.prepare	 = ufshcd_suspend_prepare,
-	.complete	 = ufshcd_resume_complete,
-};
-
-static struct platform_driver cdns_ufs_pltfrm_driver = {
-	.probe	= cdns_ufs_pltfrm_probe,
-	.remove	= cdns_ufs_pltfrm_remove,
-	.shutdown = ufshcd_pltfrm_shutdown,
-	.driver	= {
-		.name   = "cdns-ufshcd",
-		.pm     = &cdns_ufs_dev_pm_ops,
-		.of_match_table = cdns_ufs_of_match,
-	},
-};
-
-module_platform_driver(cdns_ufs_pltfrm_driver);
-
-MODULE_AUTHOR("Jan Kotas <jank@cadence.com>");
-MODULE_DESCRIPTION("Cadence UFS host controller platform driver");
-MODULE_LICENSE("GPL v2");