151 lines
3.8 KiB
C
151 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Synopsys G210 Test Chip driver
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*
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* Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
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*
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* Authors: Joao Pinto <jpinto@synopsys.com>
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*/
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#include <ufs/ufshcd.h>
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#include "ufshcd-dwc.h"
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#include "tc-dwc-g210.h"
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/pm_runtime.h>
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/* Test Chip type expected values */
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#define TC_G210_20BIT 20
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#define TC_G210_40BIT 40
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#define TC_G210_INV 0
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static int tc_type = TC_G210_INV;
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module_param(tc_type, int, 0);
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MODULE_PARM_DESC(tc_type, "Test Chip Type (20 = 20-bit, 40 = 40-bit)");
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/*
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* struct ufs_hba_dwc_vops - UFS DWC specific variant operations
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*/
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static struct ufs_hba_variant_ops tc_dwc_g210_pci_hba_vops = {
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.name = "tc-dwc-g210-pci",
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.link_startup_notify = ufshcd_dwc_link_startup_notify,
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};
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/**
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* tc_dwc_g210_pci_shutdown - main function to put the controller in reset state
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* @pdev: pointer to PCI device handle
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*/
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static void tc_dwc_g210_pci_shutdown(struct pci_dev *pdev)
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{
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ufshcd_shutdown((struct ufs_hba *)pci_get_drvdata(pdev));
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}
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/**
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* tc_dwc_g210_pci_remove - de-allocate PCI/SCSI host and host memory space
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* data structure memory
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* @pdev: pointer to PCI handle
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*/
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static void tc_dwc_g210_pci_remove(struct pci_dev *pdev)
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{
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struct ufs_hba *hba = pci_get_drvdata(pdev);
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pm_runtime_forbid(&pdev->dev);
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pm_runtime_get_noresume(&pdev->dev);
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ufshcd_remove(hba);
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}
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/**
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* tc_dwc_g210_pci_probe - probe routine of the driver
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* @pdev: pointer to PCI device handle
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* @id: PCI device id
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*
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* Returns 0 on success, non-zero value on failure
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*/
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static int
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tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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struct ufs_hba *hba;
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void __iomem *mmio_base;
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int err;
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/* Check Test Chip type and set the specific setup routine */
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if (tc_type == TC_G210_20BIT) {
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tc_dwc_g210_pci_hba_vops.phy_initialization =
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tc_dwc_g210_config_20_bit;
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} else if (tc_type == TC_G210_40BIT) {
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tc_dwc_g210_pci_hba_vops.phy_initialization =
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tc_dwc_g210_config_40_bit;
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} else {
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dev_err(&pdev->dev, "test chip version not specified\n");
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return -EPERM;
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}
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err = pcim_enable_device(pdev);
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if (err) {
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dev_err(&pdev->dev, "pcim_enable_device failed\n");
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return err;
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}
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pci_set_master(pdev);
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err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD);
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if (err < 0) {
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dev_err(&pdev->dev, "request and iomap failed\n");
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return err;
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}
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mmio_base = pcim_iomap_table(pdev)[0];
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err = ufshcd_alloc_host(&pdev->dev, &hba);
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if (err) {
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dev_err(&pdev->dev, "Allocation failed\n");
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return err;
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}
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hba->vops = &tc_dwc_g210_pci_hba_vops;
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err = ufshcd_init(hba, mmio_base, pdev->irq);
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if (err) {
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dev_err(&pdev->dev, "Initialization failed\n");
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return err;
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}
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pm_runtime_put_noidle(&pdev->dev);
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pm_runtime_allow(&pdev->dev);
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return 0;
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}
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static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
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SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
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.prepare = ufshcd_suspend_prepare,
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.complete = ufshcd_resume_complete,
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};
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static const struct pci_device_id tc_dwc_g210_pci_tbl[] = {
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{ PCI_VENDOR_ID_SYNOPSYS, 0xB101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ PCI_VENDOR_ID_SYNOPSYS, 0xB102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ } /* terminate list */
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};
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MODULE_DEVICE_TABLE(pci, tc_dwc_g210_pci_tbl);
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static struct pci_driver tc_dwc_g210_pci_driver = {
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.name = "tc-dwc-g210-pci",
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.id_table = tc_dwc_g210_pci_tbl,
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.probe = tc_dwc_g210_pci_probe,
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.remove = tc_dwc_g210_pci_remove,
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.shutdown = tc_dwc_g210_pci_shutdown,
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.driver = {
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.pm = &tc_dwc_g210_pci_pm_ops
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},
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};
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module_pci_driver(tc_dwc_g210_pci_driver);
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MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
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MODULE_DESCRIPTION("Synopsys Test Chip G210 PCI glue driver");
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MODULE_LICENSE("Dual BSD/GPL");
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