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 29 int 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 } 59 EXPORT_SYMBOL_GPL(dw_mci_pltfm_register); 60 61 const 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 }; 68 EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops); 69 70 static 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 }; 76 MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match); 77 78 static 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 91 int 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 } 98 EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove); 99 100 static 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 }; 109 110 module_platform_driver(dw_mci_pltfm_driver); 111 112 MODULE_DESCRIPTION("DW Multimedia Card Interface driver"); 113 MODULE_AUTHOR("NXP Semiconductor VietNam"); 114 MODULE_AUTHOR("Imagination Technologies Ltd"); 115 MODULE_LICENSE("GPL v2"); 116