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/pm_runtime.h> 18 #include <linux/slab.h> 19 #include <linux/mmc/host.h> 20 #include <linux/mmc/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 .caps = DW_MCI_CAPABILITIES, 33 .bus_hz = 33 * 1000 * 1000, 34 .detect_delay_ms = 200, 35 .fifo_depth = 32, 36 }; 37 38 static int dw_mci_pci_probe(struct pci_dev *pdev, 39 const struct pci_device_id *entries) 40 { 41 struct dw_mci *host; 42 int ret; 43 44 ret = pcim_enable_device(pdev); 45 if (ret) 46 return ret; 47 48 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL); 49 if (!host) 50 return -ENOMEM; 51 52 host->irq = pdev->irq; 53 host->irq_flags = IRQF_SHARED; 54 host->dev = &pdev->dev; 55 host->pdata = &pci_board_data; 56 57 ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev)); 58 if (ret) 59 return ret; 60 61 host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO]; 62 63 pci_set_master(pdev); 64 65 ret = dw_mci_probe(host); 66 if (ret) 67 return ret; 68 69 pci_set_drvdata(pdev, host); 70 71 return 0; 72 } 73 74 static void dw_mci_pci_remove(struct pci_dev *pdev) 75 { 76 struct dw_mci *host = pci_get_drvdata(pdev); 77 78 dw_mci_remove(host); 79 } 80 81 static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = { 82 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 83 pm_runtime_force_resume) 84 SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend, 85 dw_mci_runtime_resume, 86 NULL) 87 }; 88 89 static const struct pci_device_id dw_mci_pci_id[] = { 90 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) }, 91 {} 92 }; 93 MODULE_DEVICE_TABLE(pci, dw_mci_pci_id); 94 95 static struct pci_driver dw_mci_pci_driver = { 96 .name = "dw_mmc_pci", 97 .id_table = dw_mci_pci_id, 98 .probe = dw_mci_pci_probe, 99 .remove = dw_mci_pci_remove, 100 .driver = { 101 .pm = &dw_mci_pci_dev_pm_ops, 102 }, 103 }; 104 105 module_pci_driver(dw_mci_pci_driver); 106 107 MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver"); 108 MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>"); 109 MODULE_LICENSE("GPL v2"); 110