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)[0]; 63 64 ret = dw_mci_probe(host); 65 if (ret) 66 return ret; 67 68 pci_set_drvdata(pdev, host); 69 70 return 0; 71 } 72 73 static void dw_mci_pci_remove(struct pci_dev *pdev) 74 { 75 struct dw_mci *host = pci_get_drvdata(pdev); 76 77 dw_mci_remove(host); 78 } 79 80 #ifdef CONFIG_PM_SLEEP 81 static int dw_mci_pci_suspend(struct device *dev) 82 { 83 struct pci_dev *pdev = to_pci_dev(dev); 84 struct dw_mci *host = pci_get_drvdata(pdev); 85 86 return dw_mci_suspend(host); 87 } 88 89 static int dw_mci_pci_resume(struct device *dev) 90 { 91 struct pci_dev *pdev = to_pci_dev(dev); 92 struct dw_mci *host = pci_get_drvdata(pdev); 93 94 return dw_mci_resume(host); 95 } 96 #else 97 #define dw_mci_pci_suspend NULL 98 #define dw_mci_pci_resume NULL 99 #endif /* CONFIG_PM_SLEEP */ 100 101 static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume); 102 103 static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = { 104 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) }, 105 {} 106 }; 107 MODULE_DEVICE_TABLE(pci, dw_mci_pci_id); 108 109 static struct pci_driver dw_mci_pci_driver = { 110 .name = "dw_mmc_pci", 111 .id_table = dw_mci_pci_id, 112 .probe = dw_mci_pci_probe, 113 .remove = dw_mci_pci_remove, 114 .driver = { 115 .pm = &dw_mci_pci_pmops 116 }, 117 }; 118 119 module_pci_driver(dw_mci_pci_driver); 120 121 MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver"); 122 MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>"); 123 MODULE_LICENSE("GPL v2"); 124