1 /* 2 * Synopsys DesignWare Multimedia Card PCI Interface driver 3 * 4 * Copyright (C) 2012 Vayavya Labs Pvt. Ltd. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 */ 11 12 #include <linux/interrupt.h> 13 #include <linux/module.h> 14 #include <linux/io.h> 15 #include <linux/irq.h> 16 #include <linux/pci.h> 17 #include <linux/slab.h> 18 #include <linux/mmc/host.h> 19 #include <linux/mmc/mmc.h> 20 #include <linux/mmc/dw_mmc.h> 21 #include "dw_mmc.h" 22 23 #define PCI_BAR_NO 2 24 #define SYNOPSYS_DW_MCI_VENDOR_ID 0x700 25 #define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107 26 /* Defining the Capabilities */ 27 #define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\ 28 MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\ 29 MMC_CAP_SDIO_IRQ) 30 31 static struct dw_mci_board pci_board_data = { 32 .num_slots = 1, 33 .caps = DW_MCI_CAPABILITIES, 34 .bus_hz = 33 * 1000 * 1000, 35 .detect_delay_ms = 200, 36 .fifo_depth = 32, 37 }; 38 39 static int dw_mci_pci_probe(struct pci_dev *pdev, 40 const struct pci_device_id *entries) 41 { 42 struct dw_mci *host; 43 int ret; 44 45 ret = pcim_enable_device(pdev); 46 if (ret) 47 return ret; 48 49 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL); 50 if (!host) 51 return -ENOMEM; 52 53 host->irq = pdev->irq; 54 host->irq_flags = IRQF_SHARED; 55 host->dev = &pdev->dev; 56 host->pdata = &pci_board_data; 57 58 ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev)); 59 if (ret) 60 return ret; 61 62 host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO]; 63 64 pci_set_master(pdev); 65 66 ret = dw_mci_probe(host); 67 if (ret) 68 return ret; 69 70 pci_set_drvdata(pdev, host); 71 72 return 0; 73 } 74 75 static void dw_mci_pci_remove(struct pci_dev *pdev) 76 { 77 struct dw_mci *host = pci_get_drvdata(pdev); 78 79 dw_mci_remove(host); 80 } 81 82 #ifdef CONFIG_PM_SLEEP 83 static int dw_mci_pci_suspend(struct device *dev) 84 { 85 struct pci_dev *pdev = to_pci_dev(dev); 86 struct dw_mci *host = pci_get_drvdata(pdev); 87 88 return dw_mci_suspend(host); 89 } 90 91 static int dw_mci_pci_resume(struct device *dev) 92 { 93 struct pci_dev *pdev = to_pci_dev(dev); 94 struct dw_mci *host = pci_get_drvdata(pdev); 95 96 return dw_mci_resume(host); 97 } 98 #else 99 #define dw_mci_pci_suspend NULL 100 #define dw_mci_pci_resume NULL 101 #endif /* CONFIG_PM_SLEEP */ 102 103 static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume); 104 105 static const struct pci_device_id dw_mci_pci_id[] = { 106 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) }, 107 {} 108 }; 109 MODULE_DEVICE_TABLE(pci, dw_mci_pci_id); 110 111 static struct pci_driver dw_mci_pci_driver = { 112 .name = "dw_mmc_pci", 113 .id_table = dw_mci_pci_id, 114 .probe = dw_mci_pci_probe, 115 .remove = dw_mci_pci_remove, 116 .driver = { 117 .pm = &dw_mci_pci_pmops 118 }, 119 }; 120 121 module_pci_driver(dw_mci_pci_driver); 122 123 MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver"); 124 MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>"); 125 MODULE_LICENSE("GPL v2"); 126