LXR linux/drivers/mmc/host/dw

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Synopsys DesignWare Multimedia Card PCI Interface driver
   4 *
   5 * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
   6 */
   7
   8#include <linux/interrupt.h>
   9#include <linux/module.h>
  10#include <linux/io.h>
  11#include <linux/irq.h>
  12#include <linux/pci.h>
  13#include <linux/pm_runtime.h>
  14#include <linux/slab.h>
  15#include <linux/mmc/host.h>
  16#include <linux/mmc/mmc.h>
  17#include "dw_mmc.h"
  18
  19#define PCI_BAR_NO 2
  20#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
  21#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
  22/* Defining the Capabilities */
  23#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
  24                                MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
  25                                MMC_CAP_SDIO_IRQ)
  26
  27static struct dw_mci_board pci_board_data = {
  28        .caps                           = DW_MCI_CAPABILITIES,
  29        .bus_hz                         = 33 * 1000 * 1000,
  30        .detect_delay_ms                = 200,
  31        .fifo_depth                     = 32,
  32};
  33
  34static int dw_mci_pci_probe(struct pci_dev *pdev,
  35                            const struct pci_device_id *entries)
  36{
  37        struct dw_mci *host;
  38        int ret;
  39
  40        ret = pcim_enable_device(pdev);
  41        if (ret)
  42                return ret;
  43
  44        host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
  45        if (!host)
  46                return -ENOMEM;
  47
  48        host->irq = pdev->irq;
  49        host->irq_flags = IRQF_SHARED;
  50        host->dev = &pdev->dev;
  51        host->pdata = &pci_board_data;
  52
  53        ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
  54        if (ret)
  55                return ret;
  56
  57        host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
  58
  59        pci_set_master(pdev);
  60
  61        ret = dw_mci_probe(host);
  62        if (ret)
  63                return ret;
  64
  65        pci_set_drvdata(pdev, host);
  66
  67        return 0;
  68}
  69
  70static void dw_mci_pci_remove(struct pci_dev *pdev)
  71{
  72        struct dw_mci *host = pci_get_drvdata(pdev);
  73
  74        dw_mci_remove(host);
  75}
  76
  77static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = {
  78        SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
  79                                pm_runtime_force_resume)
  80        SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
  81                           dw_mci_runtime_resume,
  82                           NULL)
  83};
  84
  85static const struct pci_device_id dw_mci_pci_id[] = {
  86        { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
  87        {}
  88};
  89MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
  90
  91static struct pci_driver dw_mci_pci_driver = {
  92        .name           = "dw_mmc_pci",
  93        .id_table       = dw_mci_pci_id,
  94        .probe          = dw_mci_pci_probe,
  95        .remove         = dw_mci_pci_remove,
  96        .driver         =       {
  97                .pm =   &dw_mci_pci_dev_pm_ops,
  98        },
  99};
 100
 101module_pci_driver(dw_mci_pci_driver);
 102
 103MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
 104MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
 105MODULE_LICENSE("GPL v2");
 106