LXR linux/drivers/mmc/host/dw

   1/*
   2 * Synopsys DesignWare Multimedia Card Interface driver
   3 *
   4 * Copyright (C) 2009 NXP Semiconductors
   5 * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 */
  12
  13#include <linux/err.h>
  14#include <linux/interrupt.h>
  15#include <linux/module.h>
  16#include <linux/io.h>
  17#include <linux/irq.h>
  18#include <linux/platform_device.h>
  19#include <linux/pm_runtime.h>
  20#include <linux/slab.h>
  21#include <linux/mmc/host.h>
  22#include <linux/mmc/mmc.h>
  23#include <linux/of.h>
  24#include <linux/clk.h>
  25
  26#include "dw_mmc.h"
  27#include "dw_mmc-pltfm.h"
  28
  29int dw_mci_pltfm_register(struct platform_device *pdev,
  30                          const struct dw_mci_drv_data *drv_data)
  31{
  32        struct dw_mci *host;
  33        struct resource *regs;
  34
  35        host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
  36        if (!host)
  37                return -ENOMEM;
  38
  39        host->irq = platform_get_irq(pdev, 0);
  40        if (host->irq < 0)
  41                return host->irq;
  42
  43        host->drv_data = drv_data;
  44        host->dev = &pdev->dev;
  45        host->irq_flags = 0;
  46        host->pdata = pdev->dev.platform_data;
  47
  48        regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  49        host->regs = devm_ioremap_resource(&pdev->dev, regs);
  50        if (IS_ERR(host->regs))
  51                return PTR_ERR(host->regs);
  52
  53        /* Get registers' physical base address */
  54        host->phy_regs = regs->start;
  55
  56        platform_set_drvdata(pdev, host);
  57        return dw_mci_probe(host);
  58}
  59EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
  60
  61const struct dev_pm_ops dw_mci_pltfm_pmops = {
  62        SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
  63                                pm_runtime_force_resume)
  64        SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
  65                           dw_mci_runtime_resume,
  66                           NULL)
  67};
  68EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
  69
  70static const struct of_device_id dw_mci_pltfm_match[] = {
  71        { .compatible = "snps,dw-mshc", },
  72        { .compatible = "altr,socfpga-dw-mshc", },
  73        { .compatible = "img,pistachio-dw-mshc", },
  74        {},
  75};
  76MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
  77
  78static int dw_mci_pltfm_probe(struct platform_device *pdev)
  79{
  80        const struct dw_mci_drv_data *drv_data = NULL;
  81        const struct of_device_id *match;
  82
  83        if (pdev->dev.of_node) {
  84                match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
  85                drv_data = match->data;
  86        }
  87
  88        return dw_mci_pltfm_register(pdev, drv_data);
  89}
  90
  91int dw_mci_pltfm_remove(struct platform_device *pdev)
  92{
  93        struct dw_mci *host = platform_get_drvdata(pdev);
  94
  95        dw_mci_remove(host);
  96        return 0;
  97}
  98EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
  99
 100static struct platform_driver dw_mci_pltfm_driver = {
 101        .probe          = dw_mci_pltfm_probe,
 102        .remove         = dw_mci_pltfm_remove,
 103        .driver         = {
 104                .name           = "dw_mmc",
 105                .of_match_table = dw_mci_pltfm_match,
 106                .pm             = &dw_mci_pltfm_pmops,
 107        },
 108};
 109
 110module_platform_driver(dw_mci_pltfm_driver);
 111
 112MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
 113MODULE_AUTHOR("NXP Semiconductor VietNam");
 114MODULE_AUTHOR("Imagination Technologies Ltd");
 115MODULE_LICENSE("GPL v2");
 116