1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Synopsys DesignWare Multimedia Card PCI Interface driver 4 * 5 * Copyright (C) 2012 Vayavya Labs Pvt. Ltd. 6 */ 7 8 #include <linux/interrupt.h> 9 #include <linux/module.h> 10 #include <linux/io.h> 11 #include <linux/irq.h> 12 #include <linux/pci.h> 13 #include <linux/pm_runtime.h> 14 #include <linux/slab.h> 15 #include <linux/mmc/host.h> 16 #include <linux/mmc/mmc.h> 17 #include "dw_mmc.h" 18 19 #define PCI_BAR_NO 2 20 #define SYNOPSYS_DW_MCI_VENDOR_ID 0x700 21 #define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107 22 /* Defining the Capabilities */ 23 #define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\ 24 MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\ 25 MMC_CAP_SDIO_IRQ) 26 27 static struct dw_mci_board pci_board_data = { 28 .caps = DW_MCI_CAPABILITIES, 29 .bus_hz = 33 * 1000 * 1000, 30 .detect_delay_ms = 200, 31 .fifo_depth = 32, 32 }; 33 34 static int dw_mci_pci_probe(struct pci_dev *pdev, 35 const struct pci_device_id *entries) 36 { 37 struct dw_mci *host; 38 int ret; 39 40 ret = pcim_enable_device(pdev); 41 if (ret) 42 return ret; 43 44 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL); 45 if (!host) 46 return -ENOMEM; 47 48 host->irq = pdev->irq; 49 host->irq_flags = IRQF_SHARED; 50 host->dev = &pdev->dev; 51 host->pdata = &pci_board_data; 52 53 ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev)); 54 if (ret) 55 return ret; 56 57 host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO]; 58 59 pci_set_master(pdev); 60 61 ret = dw_mci_probe(host); 62 if (ret) 63 return ret; 64 65 pci_set_drvdata(pdev, host); 66 67 return 0; 68 } 69 70 static void dw_mci_pci_remove(struct pci_dev *pdev) 71 { 72 struct dw_mci *host = pci_get_drvdata(pdev); 73 74 dw_mci_remove(host); 75 } 76 77 static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = { 78 SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) 79 RUNTIME_PM_OPS(dw_mci_runtime_suspend, dw_mci_runtime_resume, NULL) 80 }; 81 82 static const struct pci_device_id dw_mci_pci_id[] = { 83 { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) }, 84 {} 85 }; 86 MODULE_DEVICE_TABLE(pci, dw_mci_pci_id); 87 88 static struct pci_driver dw_mci_pci_driver = { 89 .name = "dw_mmc_pci", 90 .id_table = dw_mci_pci_id, 91 .probe = dw_mci_pci_probe, 92 .remove = dw_mci_pci_remove, 93 .driver = { 94 .pm = pm_ptr(&dw_mci_pci_dev_pm_ops), 95 }, 96 }; 97 98 module_pci_driver(dw_mci_pci_driver); 99 100 MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver"); 101 MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>"); 102 MODULE_LICENSE("GPL v2"); 103