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"); 113