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/mmc/dw_mmc.h> 24 #include <linux/of.h> 25 #include <linux/clk.h> 26 27 #include "dw_mmc.h" 28 #include "dw_mmc-pltfm.h" 29 30 int dw_mci_pltfm_register(struct platform_device *pdev, 31 const struct dw_mci_drv_data *drv_data) 32 { 33 struct dw_mci *host; 34 struct resource *regs; 35 36 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL); 37 if (!host) 38 return -ENOMEM; 39 40 host->irq = platform_get_irq(pdev, 0); 41 if (host->irq < 0) 42 return host->irq; 43 44 host->drv_data = drv_data; 45 host->dev = &pdev->dev; 46 host->irq_flags = 0; 47 host->pdata = pdev->dev.platform_data; 48 49 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); 50 host->regs = devm_ioremap_resource(&pdev->dev, regs); 51 if (IS_ERR(host->regs)) 52 return PTR_ERR(host->regs); 53 54 /* Get registers' physical base address */ 55 host->phy_regs = regs->start; 56 57 platform_set_drvdata(pdev, host); 58 return dw_mci_probe(host); 59 } 60 EXPORT_SYMBOL_GPL(dw_mci_pltfm_register); 61 62 const struct dev_pm_ops dw_mci_pltfm_pmops = { 63 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 64 pm_runtime_force_resume) 65 SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend, 66 dw_mci_runtime_resume, 67 NULL) 68 }; 69 EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops); 70 71 static const struct of_device_id dw_mci_pltfm_match[] = { 72 { .compatible = "snps,dw-mshc", }, 73 { .compatible = "altr,socfpga-dw-mshc", }, 74 { .compatible = "img,pistachio-dw-mshc", }, 75 {}, 76 }; 77 MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match); 78 79 static int dw_mci_pltfm_probe(struct platform_device *pdev) 80 { 81 const struct dw_mci_drv_data *drv_data = NULL; 82 const struct of_device_id *match; 83 84 if (pdev->dev.of_node) { 85 match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node); 86 drv_data = match->data; 87 } 88 89 return dw_mci_pltfm_register(pdev, drv_data); 90 } 91 92 int dw_mci_pltfm_remove(struct platform_device *pdev) 93 { 94 struct dw_mci *host = platform_get_drvdata(pdev); 95 96 dw_mci_remove(host); 97 return 0; 98 } 99 EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove); 100 101 static struct platform_driver dw_mci_pltfm_driver = { 102 .probe = dw_mci_pltfm_probe, 103 .remove = dw_mci_pltfm_remove, 104 .driver = { 105 .name = "dw_mmc", 106 .of_match_table = dw_mci_pltfm_match, 107 .pm = &dw_mci_pltfm_pmops, 108 }, 109 }; 110 111 module_platform_driver(dw_mci_pltfm_driver); 112 113 MODULE_DESCRIPTION("DW Multimedia Card Interface driver"); 114 MODULE_AUTHOR("NXP Semiconductor VietNam"); 115 MODULE_AUTHOR("Imagination Technologies Ltd"); 116 MODULE_LICENSE("GPL v2"); 117