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/slab.h> 20 #include <linux/mmc/host.h> 21 #include <linux/mmc/mmc.h> 22 #include <linux/mmc/dw_mmc.h> 23 #include <linux/of.h> 24 25 #include "dw_mmc.h" 26 27 int dw_mci_pltfm_register(struct platform_device *pdev, 28 const struct dw_mci_drv_data *drv_data) 29 { 30 struct dw_mci *host; 31 struct resource *regs; 32 int ret; 33 34 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL); 35 if (!host) 36 return -ENOMEM; 37 38 host->irq = platform_get_irq(pdev, 0); 39 if (host->irq < 0) 40 return host->irq; 41 42 host->drv_data = drv_data; 43 host->dev = &pdev->dev; 44 host->irq_flags = 0; 45 host->pdata = pdev->dev.platform_data; 46 47 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); 48 host->regs = devm_ioremap_resource(&pdev->dev, regs); 49 if (IS_ERR(host->regs)) 50 return PTR_ERR(host->regs); 51 52 if (drv_data && drv_data->init) { 53 ret = drv_data->init(host); 54 if (ret) 55 return ret; 56 } 57 58 platform_set_drvdata(pdev, host); 59 return dw_mci_probe(host); 60 } 61 EXPORT_SYMBOL_GPL(dw_mci_pltfm_register); 62 63 static int dw_mci_pltfm_probe(struct platform_device *pdev) 64 { 65 return dw_mci_pltfm_register(pdev, NULL); 66 } 67 68 static int dw_mci_pltfm_remove(struct platform_device *pdev) 69 { 70 struct dw_mci *host = platform_get_drvdata(pdev); 71 72 dw_mci_remove(host); 73 return 0; 74 } 75 EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove); 76 77 #ifdef CONFIG_PM_SLEEP 78 /* 79 * TODO: we should probably disable the clock to the card in the suspend path. 80 */ 81 static int dw_mci_pltfm_suspend(struct device *dev) 82 { 83 struct dw_mci *host = dev_get_drvdata(dev); 84 85 return dw_mci_suspend(host); 86 } 87 88 static int dw_mci_pltfm_resume(struct device *dev) 89 { 90 struct dw_mci *host = dev_get_drvdata(dev); 91 92 return dw_mci_resume(host); 93 } 94 #else 95 #define dw_mci_pltfm_suspend NULL 96 #define dw_mci_pltfm_resume NULL 97 #endif /* CONFIG_PM_SLEEP */ 98 99 SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume); 100 EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops); 101 102 static const struct of_device_id dw_mci_pltfm_match[] = { 103 { .compatible = "snps,dw-mshc", }, 104 {}, 105 }; 106 MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match); 107 108 static struct platform_driver dw_mci_pltfm_driver = { 109 .probe = dw_mci_pltfm_probe, 110 .remove = dw_mci_pltfm_remove, 111 .driver = { 112 .name = "dw_mmc", 113 .of_match_table = of_match_ptr(dw_mci_pltfm_match), 114 .pm = &dw_mci_pltfm_pmops, 115 }, 116 }; 117 118 module_platform_driver(dw_mci_pltfm_driver); 119 120 MODULE_DESCRIPTION("DW Multimedia Card Interface driver"); 121 MODULE_AUTHOR("NXP Semiconductor VietNam"); 122 MODULE_AUTHOR("Imagination Technologies Ltd"); 123 MODULE_LICENSE("GPL v2"); 124