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/pm_runtime.h>
  18#include <linux/slab.h>
  19#include <linux/mmc/host.h>
  20#include <linux/mmc/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        .caps                           = DW_MCI_CAPABILITIES,
  33        .bus_hz                         = 33 * 1000 * 1000,
  34        .detect_delay_ms                = 200,
  35        .fifo_depth                     = 32,
  36};
  37
  38static int dw_mci_pci_probe(struct pci_dev *pdev,
  39                            const struct pci_device_id *entries)
  40{
  41        struct dw_mci *host;
  42        int ret;
  43
  44        ret = pcim_enable_device(pdev);
  45        if (ret)
  46                return ret;
  47
  48        host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
  49        if (!host)
  50                return -ENOMEM;
  51
  52        host->irq = pdev->irq;
  53        host->irq_flags = IRQF_SHARED;
  54        host->dev = &pdev->dev;
  55        host->pdata = &pci_board_data;
  56
  57        ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
  58        if (ret)
  59                return ret;
  60
  61        host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
  62
  63        pci_set_master(pdev);
  64
  65        ret = dw_mci_probe(host);
  66        if (ret)
  67                return ret;
  68
  69        pci_set_drvdata(pdev, host);
  70
  71        return 0;
  72}
  73
  74static void dw_mci_pci_remove(struct pci_dev *pdev)
  75{
  76        struct dw_mci *host = pci_get_drvdata(pdev);
  77
  78        dw_mci_remove(host);
  79}
  80
  81static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = {
  82        SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
  83                                pm_runtime_force_resume)
  84        SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
  85                           dw_mci_runtime_resume,
  86                           NULL)
  87};
  88
  89static const struct pci_device_id dw_mci_pci_id[] = {
  90        { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
  91        {}
  92};
  93MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
  94
  95static struct pci_driver dw_mci_pci_driver = {
  96        .name           = "dw_mmc_pci",
  97        .id_table       = dw_mci_pci_id,
  98        .probe          = dw_mci_pci_probe,
  99        .remove         = dw_mci_pci_remove,
 100        .driver         =       {
 101                .pm =   &dw_mci_pci_dev_pm_ops,
 102        },
 103};
 104
 105module_pci_driver(dw_mci_pci_driver);
 106
 107MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
 108MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
 109MODULE_LICENSE("GPL v2");
 110