LXR linux/drivers/mmc/host/dw

   1/*
   2 * Synopsys DesignWare Multimedia Card PCI Interface driver
   3 *
   4 * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 */
  11
  12#include <linux/interrupt.h>
  13#include <linux/module.h>
  14#include <linux/io.h>
  15#include <linux/irq.h>
  16#include <linux/pci.h>
  17#include <linux/slab.h>
  18#include <linux/mmc/host.h>
  19#include <linux/mmc/mmc.h>
  20#include <linux/mmc/dw_mmc.h>
  21#include "dw_mmc.h"
  22
  23#define PCI_BAR_NO 2
  24#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
  25#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
  26/* Defining the Capabilities */
  27#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
  28                                MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
  29                                MMC_CAP_SDIO_IRQ)
  30
  31static struct dw_mci_board pci_board_data = {
  32        .num_slots                      = 1,
  33        .caps                           = DW_MCI_CAPABILITIES,
  34        .bus_hz                         = 33 * 1000 * 1000,
  35        .detect_delay_ms                = 200,
  36        .fifo_depth                     = 32,
  37};
  38
  39static int dw_mci_pci_probe(struct pci_dev *pdev,
  40                            const struct pci_device_id *entries)
  41{
  42        struct dw_mci *host;
  43        int ret;
  44
  45        ret = pcim_enable_device(pdev);
  46        if (ret)
  47                return ret;
  48
  49        host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
  50        if (!host)
  51                return -ENOMEM;
  52
  53        host->irq = pdev->irq;
  54        host->irq_flags = IRQF_SHARED;
  55        host->dev = &pdev->dev;
  56        host->pdata = &pci_board_data;
  57
  58        ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
  59        if (ret)
  60                return ret;
  61
  62        host->regs = pcim_iomap_table(pdev)[0];
  63
  64        ret = dw_mci_probe(host);
  65        if (ret)
  66                return ret;
  67
  68        pci_set_drvdata(pdev, host);
  69
  70        return 0;
  71}
  72
  73static void dw_mci_pci_remove(struct pci_dev *pdev)
  74{
  75        struct dw_mci *host = pci_get_drvdata(pdev);
  76
  77        dw_mci_remove(host);
  78}
  79
  80#ifdef CONFIG_PM_SLEEP
  81static int dw_mci_pci_suspend(struct device *dev)
  82{
  83        struct pci_dev *pdev = to_pci_dev(dev);
  84        struct dw_mci *host = pci_get_drvdata(pdev);
  85
  86        return dw_mci_suspend(host);
  87}
  88
  89static int dw_mci_pci_resume(struct device *dev)
  90{
  91        struct pci_dev *pdev = to_pci_dev(dev);
  92        struct dw_mci *host = pci_get_drvdata(pdev);
  93
  94        return dw_mci_resume(host);
  95}
  96#else
  97#define dw_mci_pci_suspend      NULL
  98#define dw_mci_pci_resume       NULL
  99#endif /* CONFIG_PM_SLEEP */
 100
 101static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
 102
 103static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = {
 104        { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
 105        {}
 106};
 107MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
 108
 109static struct pci_driver dw_mci_pci_driver = {
 110        .name           = "dw_mmc_pci",
 111        .id_table       = dw_mci_pci_id,
 112        .probe          = dw_mci_pci_probe,
 113        .remove         = dw_mci_pci_remove,
 114        .driver         =       {
 115                .pm =   &dw_mci_pci_pmops
 116        },
 117};
 118
 119module_pci_driver(dw_mci_pci_driver);
 120
 121MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
 122MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
 123MODULE_LICENSE("GPL v2");
 124