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 <linux/mmc/dw_mmc.h> 22 #include "dw_mmc.h" 23 24 #define PCI_BAR_NO 2 25 #define SYNOPSYS_DW_MCI_VENDOR_ID 0x700 26 #define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107 27 /* Defining the Capabilities */ 28 #define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\ 29 MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\ 30 MMC_CAP_SDIO_IRQ) 31 32 static struct dw_mci_board pci_board_data = { 33 .num_slots = 1, 34 .caps = DW_MCI_CAPABILITIES, 35 .bus_hz = 33 * 1000 * 1000, 36 .detect_delay_ms = 200, 37 .fifo_depth = 32, 38 }; 39 40 static int dw_mci_pci_probe(struct pci_dev *pdev, 41 const struct pci_device_id *entries) 42 { 43 struct dw_mci *host; 44 int ret; 45 46 ret = pcim_enable_device(pdev); 47 if (ret) 48 return ret; 49 50 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL); 51 if (!host) 52 return -ENOMEM; 53 54 host->irq = pdev->irq; 55 host->irq_flags = IRQF_SHARED; 56 host->dev = &pdev->dev; 57 host->pdata = &pci_board_data; 58 59 ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev)); 60 if (ret) 61 return ret; 62 63 host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO]; 64 65 pci_set_master(pdev); 66 67 ret = dw_mci_probe(host); 68 if (ret) 69 return ret; 70 71 pci_set_drvdata(pdev, host); 72 73 return 0; 74 } 75 76 static void dw_mci_pci_remove(struct pci_dev *pdev) 77 { 78 struct dw_mci *host = pci_get_drvdata(pdev); 79 80 dw_mci_remove(host); 81 } 82 83 static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = { 84 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 85 pm_runtime_force_resume) 86 SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend, 87 dw_mci_runtime_resume, 88 NULL) 89 }; 90 91 static const struct pci_device_id dw_mci_pci_id[] = { 92 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) }, 93 {} 94 }; 95 MODULE_DEVICE_TABLE(pci, dw_mci_pci_id); 96 97 static struct pci_driver dw_mci_pci_driver = { 98 .name = "dw_mmc_pci", 99 .id_table = dw_mci_pci_id, 100 .probe = dw_mci_pci_probe, 101 .remove = dw_mci_pci_remove, 102 .driver = { 103 .pm = &dw_mci_pci_dev_pm_ops, 104 }, 105 }; 106 107 module_pci_driver(dw_mci_pci_driver); 108 109 MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver"); 110 MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>"); 111 MODULE_LICENSE("GPL v2"); 112