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-rw-r--r--drivers/scsi/ufs/cdns-pltfrm.c343
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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-03 17:31:09 +0000