LXR linux/drivers/mmc/host/dw

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Synopsys DesignWare Multimedia Card Interface driver
   4 *
   5 * Copyright (C) 2009 NXP Semiconductors
   6 * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
   7 */
   8
   9#include <linux/err.h>
  10#include <linux/interrupt.h>
  11#include <linux/module.h>
  12#include <linux/io.h>
  13#include <linux/irq.h>
  14#include <linux/platform_device.h>
  15#include <linux/pm_runtime.h>
  16#include <linux/slab.h>
  17#include <linux/mmc/host.h>
  18#include <linux/mmc/mmc.h>
  19#include <linux/of.h>
  20
  21#include "dw_mmc.h"
  22#include "dw_mmc-pltfm.h"
  23
  24int dw_mci_pltfm_register(struct platform_device *pdev,
  25                          const struct dw_mci_drv_data *drv_data)
  26{
  27        struct dw_mci *host;
  28        struct resource *regs;
  29
  30        host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
  31        if (!host)
  32                return -ENOMEM;
  33
  34        host->irq = platform_get_irq(pdev, 0);
  35        if (host->irq < 0)
  36                return host->irq;
  37
  38        host->drv_data = drv_data;
  39        host->dev = &pdev->dev;
  40        host->irq_flags = 0;
  41        host->pdata = pdev->dev.platform_data;
  42
  43        regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  44        host->regs = devm_ioremap_resource(&pdev->dev, regs);
  45        if (IS_ERR(host->regs))
  46                return PTR_ERR(host->regs);
  47
  48        /* Get registers' physical base address */
  49        host->phy_regs = regs->start;
  50
  51        platform_set_drvdata(pdev, host);
  52        return dw_mci_probe(host);
  53}
  54EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
  55
  56const struct dev_pm_ops dw_mci_pltfm_pmops = {
  57        SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
  58                                pm_runtime_force_resume)
  59        SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
  60                           dw_mci_runtime_resume,
  61                           NULL)
  62};
  63EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
  64
  65static const struct of_device_id dw_mci_pltfm_match[] = {
  66        { .compatible = "snps,dw-mshc", },
  67        { .compatible = "altr,socfpga-dw-mshc", },
  68        { .compatible = "img,pistachio-dw-mshc", },
  69        {},
  70};
  71MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
  72
  73static int dw_mci_pltfm_probe(struct platform_device *pdev)
  74{
  75        const struct dw_mci_drv_data *drv_data = NULL;
  76        const struct of_device_id *match;
  77
  78        if (pdev->dev.of_node) {
  79                match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
  80                drv_data = match->data;
  81        }
  82
  83        return dw_mci_pltfm_register(pdev, drv_data);
  84}
  85
  86int dw_mci_pltfm_remove(struct platform_device *pdev)
  87{
  88        struct dw_mci *host = platform_get_drvdata(pdev);
  89
  90        dw_mci_remove(host);
  91        return 0;
  92}
  93EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
  94
  95static struct platform_driver dw_mci_pltfm_driver = {
  96        .probe          = dw_mci_pltfm_probe,
  97        .remove         = dw_mci_pltfm_remove,
  98        .driver         = {
  99                .name           = "dw_mmc",
 100                .probe_type     = PROBE_PREFER_ASYNCHRONOUS,
 101                .of_match_table = dw_mci_pltfm_match,
 102                .pm             = &dw_mci_pltfm_pmops,
 103        },
 104};
 105
 106module_platform_driver(dw_mci_pltfm_driver);
 107
 108MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
 109MODULE_AUTHOR("NXP Semiconductor VietNam");
 110MODULE_AUTHOR("Imagination Technologies Ltd");
 111MODULE_LICENSE("GPL v2");
 112