/*
* 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 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 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
},
};
module_pci_driver(dw_mci_pci_driver);
MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
MODULE_LICENSE("GPL v2");
