mirror of https://gitee.com/openkylin/linux.git
159 lines
3.6 KiB
C
159 lines
3.6 KiB
C
/*
|
|
* Synopsys DesignWare Multimedia Card PCI Interface driver
|
|
*
|
|
* Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/module.h>
|
|
#include <linux/io.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/mmc/host.h>
|
|
#include <linux/mmc/mmc.h>
|
|
#include <linux/mmc/dw_mmc.h>
|
|
#include "dw_mmc.h"
|
|
|
|
#define PCI_BAR_NO 2
|
|
#define COMPLETE_BAR 0
|
|
#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
|
|
#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
|
|
/* Defining the Capabilities */
|
|
#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
|
|
MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
|
|
MMC_CAP_SDIO_IRQ)
|
|
|
|
static struct dw_mci_board pci_board_data = {
|
|
.num_slots = 1,
|
|
.caps = DW_MCI_CAPABILITIES,
|
|
.bus_hz = 33 * 1000 * 1000,
|
|
.detect_delay_ms = 200,
|
|
.fifo_depth = 32,
|
|
};
|
|
|
|
static int __devinit dw_mci_pci_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *entries)
|
|
{
|
|
struct dw_mci *host;
|
|
int ret;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret)
|
|
return ret;
|
|
if (pci_request_regions(pdev, "dw_mmc_pci")) {
|
|
ret = -ENODEV;
|
|
goto err_disable_dev;
|
|
}
|
|
|
|
host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
|
|
if (!host) {
|
|
ret = -ENOMEM;
|
|
goto err_release;
|
|
}
|
|
|
|
host->irq = pdev->irq;
|
|
host->irq_flags = IRQF_SHARED;
|
|
host->dev = pdev->dev;
|
|
host->pdata = &pci_board_data;
|
|
|
|
host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR);
|
|
if (!host->regs) {
|
|
ret = -EIO;
|
|
goto err_unmap;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, host);
|
|
ret = dw_mci_probe(host);
|
|
if (ret)
|
|
goto err_probe_failed;
|
|
return ret;
|
|
|
|
err_probe_failed:
|
|
pci_iounmap(pdev, host->regs);
|
|
err_unmap:
|
|
kfree(host);
|
|
err_release:
|
|
pci_release_regions(pdev);
|
|
err_disable_dev:
|
|
pci_disable_device(pdev);
|
|
return ret;
|
|
}
|
|
|
|
static void __devexit dw_mci_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
struct dw_mci *host = pci_get_drvdata(pdev);
|
|
|
|
dw_mci_remove(host);
|
|
pci_set_drvdata(pdev, NULL);
|
|
pci_release_regions(pdev);
|
|
pci_iounmap(pdev, host->regs);
|
|
kfree(host);
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int dw_mci_pci_suspend(struct device *dev)
|
|
{
|
|
int ret;
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct dw_mci *host = pci_get_drvdata(pdev);
|
|
|
|
ret = dw_mci_suspend(host);
|
|
return ret;
|
|
}
|
|
|
|
static int dw_mci_pci_resume(struct device *dev)
|
|
{
|
|
int ret;
|
|
struct pci_dev *pdev = to_pci_dev(dev);
|
|
struct dw_mci *host = pci_get_drvdata(pdev);
|
|
|
|
ret = dw_mci_resume(host);
|
|
return ret;
|
|
}
|
|
#else
|
|
#define dw_mci_pci_suspend NULL
|
|
#define dw_mci_pci_resume NULL
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
|
|
|
|
static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = {
|
|
{ PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
|
|
|
|
static struct pci_driver dw_mci_pci_driver = {
|
|
.name = "dw_mmc_pci",
|
|
.id_table = dw_mci_pci_id,
|
|
.probe = dw_mci_pci_probe,
|
|
.remove = dw_mci_pci_remove,
|
|
.driver = {
|
|
.pm = &dw_mci_pci_pmops
|
|
},
|
|
};
|
|
|
|
static int __init dw_mci_init(void)
|
|
{
|
|
return pci_register_driver(&dw_mci_pci_driver);
|
|
}
|
|
|
|
static void __exit dw_mci_exit(void)
|
|
{
|
|
pci_unregister_driver(&dw_mci_pci_driver);
|
|
}
|
|
|
|
module_init(dw_mci_init);
|
|
module_exit(dw_mci_exit);
|
|
|
|
MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
|
|
MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
|
|
MODULE_LICENSE("GPL v2");
|