Commit ec658ea0 authored by Joao Pinto's avatar Joao Pinto Committed by Martin K. Petersen

ufs: add TC G210 pci driver

This patch adds a glue pci driver for the Synopsys G210 Test Chip.

[mkp: Fixed Kconfig depends and module name]
Signed-off-by: default avatarJoao Pinto <jpinto@synopsys.com>
Reviewed-by: default avatarHannes Reinicke <hare@suse.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent fc040a3f
...@@ -61,6 +61,14 @@ config SCSI_UFSHCD_PCI ...@@ -61,6 +61,14 @@ config SCSI_UFSHCD_PCI
If unsure, say N. 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 config SCSI_UFSHCD_PLATFORM
tristate "Platform bus based UFS Controller support" tristate "Platform bus based UFS Controller support"
depends on SCSI_UFSHCD depends on SCSI_UFSHCD
......
# UFSHCD makefile # 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-$(CONFIG_SCSI_UFS_DWC_TC_PLATFORM) += tc-dwc-g210-pltfrm.o ufshcd-dwc.o tc-dwc-g210.o
obj-$(CONFIG_SCSI_UFS_QCOM) += ufs-qcom.o obj-$(CONFIG_SCSI_UFS_QCOM) += ufs-qcom.o
obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.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");
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