drivers/mmc/host/dw_mmc-pltfm.c

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