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Release 4.11 drivers/scsi/ufs/tc-dwc-g210-pci.c

Directory: drivers/scsi/ufs
/*
 * Synopsys G210 Test Chip driver
 *
 * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
 *
 * Authors: Joao Pinto <jpinto@synopsys.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include "ufshcd.h"
#include "ufshcd-dwc.h"
#include "tc-dwc-g210.h"

#include <linux/pci.h>
#include <linux/pm_runtime.h>

/* Test Chip type expected values */

#define TC_G210_20BIT 20

#define TC_G210_40BIT 40

#define TC_G210_INV 0


static int tc_type = TC_G210_INV;
module_param(tc_type, int, 0);
MODULE_PARM_DESC(tc_type, "Test Chip Type (20 = 20-bit, 40 = 40-bit)");


static int tc_dwc_g210_pci_suspend(struct device *dev) { return ufshcd_system_suspend(dev_get_drvdata(dev)); }

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Joao Pinto20100.00%1100.00%
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static int tc_dwc_g210_pci_resume(struct device *dev) { return ufshcd_system_resume(dev_get_drvdata(dev)); }

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static int tc_dwc_g210_pci_runtime_suspend(struct device *dev) { return ufshcd_runtime_suspend(dev_get_drvdata(dev)); }

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static int tc_dwc_g210_pci_runtime_resume(struct device *dev) { return ufshcd_runtime_resume(dev_get_drvdata(dev)); }

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static int tc_dwc_g210_pci_runtime_idle(struct device *dev) { return ufshcd_runtime_idle(dev_get_drvdata(dev)); }

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/** * struct ufs_hba_dwc_vops - UFS DWC specific variant operations */ static struct ufs_hba_variant_ops tc_dwc_g210_pci_hba_vops = { .name = "tc-dwc-g210-pci", .link_startup_notify = ufshcd_dwc_link_startup_notify, }; /** * tc_dwc_g210_pci_shutdown - main function to put the controller in reset state * @pdev: pointer to PCI device handle */
static void tc_dwc_g210_pci_shutdown(struct pci_dev *pdev) { ufshcd_shutdown((struct ufs_hba *)pci_get_drvdata(pdev)); }

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/** * tc_dwc_g210_pci_remove - de-allocate PCI/SCSI host and host memory space * data structure memory * @pdev - pointer to PCI handle */
static void tc_dwc_g210_pci_remove(struct pci_dev *pdev) { struct ufs_hba *hba = pci_get_drvdata(pdev); pm_runtime_forbid(&pdev->dev); pm_runtime_get_noresume(&pdev->dev); ufshcd_remove(hba); }

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/** * tc_dwc_g210_pci_probe - probe routine of the driver * @pdev: pointer to PCI device handle * @id: PCI device id * * Returns 0 on success, non-zero value on failure */
static int tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct ufs_hba *hba; void __iomem *mmio_base; int err; /* Check Test Chip type and set the specific setup routine */ if (tc_type == TC_G210_20BIT) { tc_dwc_g210_pci_hba_vops.phy_initialization = tc_dwc_g210_config_20_bit; } else if (tc_type == TC_G210_40BIT) { tc_dwc_g210_pci_hba_vops.phy_initialization = tc_dwc_g210_config_40_bit; } else { dev_err(&pdev->dev, "test chip version not specified\n"); return -EPERM; } err = pcim_enable_device(pdev); if (err) { dev_err(&pdev->dev, "pcim_enable_device failed\n"); return err; } pci_set_master(pdev); err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD); if (err < 0) { dev_err(&pdev->dev, "request and iomap failed\n"); return err; } mmio_base = pcim_iomap_table(pdev)[0]; err = ufshcd_alloc_host(&pdev->dev, &hba); if (err) { dev_err(&pdev->dev, "Allocation failed\n"); return err; } INIT_LIST_HEAD(&hba->clk_list_head); hba->vops = &tc_dwc_g210_pci_hba_vops; err = ufshcd_init(hba, mmio_base, pdev->irq); if (err) { dev_err(&pdev->dev, "Initialization failed\n"); return err; } pci_set_drvdata(pdev, hba); pm_runtime_put_noidle(&pdev->dev); pm_runtime_allow(&pdev->dev); return 0; }

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static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = { .suspend = tc_dwc_g210_pci_suspend, .resume = tc_dwc_g210_pci_resume, .runtime_suspend = tc_dwc_g210_pci_runtime_suspend, .runtime_resume = tc_dwc_g210_pci_runtime_resume, .runtime_idle = tc_dwc_g210_pci_runtime_idle, }; static const struct pci_device_id tc_dwc_g210_pci_tbl[] = { { PCI_VENDOR_ID_SYNOPSYS, 0xB101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { PCI_VENDOR_ID_SYNOPSYS, 0xB102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { } /* terminate list */ }; MODULE_DEVICE_TABLE(pci, tc_dwc_g210_pci_tbl); static struct pci_driver tc_dwc_g210_pci_driver = { .name = "tc-dwc-g210-pci", .id_table = tc_dwc_g210_pci_tbl, .probe = tc_dwc_g210_pci_probe, .remove = tc_dwc_g210_pci_remove, .shutdown = tc_dwc_g210_pci_shutdown, .driver = { .pm = &tc_dwc_g210_pci_pm_ops }, }; module_pci_driver(tc_dwc_g210_pci_driver); MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>"); MODULE_DESCRIPTION("Synopsys Test Chip G210 PCI glue driver"); MODULE_LICENSE("Dual BSD/GPL");

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Directory: drivers/scsi/ufs
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