ufs: add TC G210 pci driver

	  If unsure, say N.

config SCSI_UFS_DWC_TC_PCI

	tristate "DesignWare pci support using a G210 Test Chip"

	depends on SCSI_UFSHCD && PCI

	---help---

	  Synopsys Test Chip is a PHY for prototyping purposes.

	  If unsure, say N.

config SCSI_UFSHCD_PLATFORM

	tristate "Platform bus based UFS Controller support"

	depends on SCSI_UFSHCD

# UFSHCD makefile

obj-$(CONFIG_SCSI_UFS_DWC_TC_PCI) += tc-dwc-g210-pci.o ufshcd-dwc.o tc-dwc-g210.o

obj-$(CONFIG_SCSI_UFS_DWC_TC_PLATFORM) += tc-dwc-g210-pltfrm.o ufshcd-dwc.o tc-dwc-g210.o

obj-$(CONFIG_SCSI_UFS_QCOM) += ufs-qcom.o

obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o

/*

 * 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));

}

static int tc_dwc_g210_pci_resume(struct device *dev)

{

	return ufshcd_system_resume(dev_get_drvdata(dev));

}

static int tc_dwc_g210_pci_runtime_suspend(struct device *dev)

{

	return ufshcd_runtime_suspend(dev_get_drvdata(dev));

}

static int tc_dwc_g210_pci_runtime_resume(struct device *dev)

{

	return ufshcd_runtime_resume(dev_get_drvdata(dev));

}

static int tc_dwc_g210_pci_runtime_idle(struct device *dev)

{

	return ufshcd_runtime_idle(dev_get_drvdata(dev));

}

/**

 * 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));

}

/**

 * 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);

}

/**

 * 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;

}

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");