162ca8034SShashidhar Hiremath /* 262ca8034SShashidhar Hiremath * Synopsys DesignWare Multimedia Card PCI Interface driver 362ca8034SShashidhar Hiremath * 462ca8034SShashidhar Hiremath * Copyright (C) 2012 Vayavya Labs Pvt. Ltd. 562ca8034SShashidhar Hiremath * 662ca8034SShashidhar Hiremath * This program is free software; you can redistribute it and/or modify 762ca8034SShashidhar Hiremath * it under the terms of the GNU General Public License as published by 862ca8034SShashidhar Hiremath * the Free Software Foundation; either version 2 of the License, or 962ca8034SShashidhar Hiremath * (at your option) any later version. 1062ca8034SShashidhar Hiremath */ 1162ca8034SShashidhar Hiremath 1262ca8034SShashidhar Hiremath #include <linux/interrupt.h> 1362ca8034SShashidhar Hiremath #include <linux/module.h> 1462ca8034SShashidhar Hiremath #include <linux/io.h> 1562ca8034SShashidhar Hiremath #include <linux/irq.h> 1662ca8034SShashidhar Hiremath #include <linux/pci.h> 1762ca8034SShashidhar Hiremath #include <linux/slab.h> 1862ca8034SShashidhar Hiremath #include <linux/mmc/host.h> 1962ca8034SShashidhar Hiremath #include <linux/mmc/mmc.h> 2062ca8034SShashidhar Hiremath #include <linux/mmc/dw_mmc.h> 2162ca8034SShashidhar Hiremath #include "dw_mmc.h" 2262ca8034SShashidhar Hiremath 2362ca8034SShashidhar Hiremath #define PCI_BAR_NO 2 2462ca8034SShashidhar Hiremath #define COMPLETE_BAR 0 2562ca8034SShashidhar Hiremath #define SYNOPSYS_DW_MCI_VENDOR_ID 0x700 2662ca8034SShashidhar Hiremath #define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107 2762ca8034SShashidhar Hiremath /* Defining the Capabilities */ 2862ca8034SShashidhar Hiremath #define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\ 2962ca8034SShashidhar Hiremath MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\ 3062ca8034SShashidhar Hiremath MMC_CAP_SDIO_IRQ) 3162ca8034SShashidhar Hiremath 3262ca8034SShashidhar Hiremath static struct dw_mci_board pci_board_data = { 3362ca8034SShashidhar Hiremath .num_slots = 1, 3462ca8034SShashidhar Hiremath .caps = DW_MCI_CAPABILITIES, 3562ca8034SShashidhar Hiremath .bus_hz = 33 * 1000 * 1000, 3662ca8034SShashidhar Hiremath .detect_delay_ms = 200, 3762ca8034SShashidhar Hiremath .fifo_depth = 32, 3862ca8034SShashidhar Hiremath }; 3962ca8034SShashidhar Hiremath 4062ca8034SShashidhar Hiremath static int __devinit dw_mci_pci_probe(struct pci_dev *pdev, 4162ca8034SShashidhar Hiremath const struct pci_device_id *entries) 4262ca8034SShashidhar Hiremath { 4362ca8034SShashidhar Hiremath struct dw_mci *host; 4462ca8034SShashidhar Hiremath int ret; 4562ca8034SShashidhar Hiremath 4662ca8034SShashidhar Hiremath ret = pci_enable_device(pdev); 4762ca8034SShashidhar Hiremath if (ret) 4862ca8034SShashidhar Hiremath return ret; 4962ca8034SShashidhar Hiremath if (pci_request_regions(pdev, "dw_mmc_pci")) { 5062ca8034SShashidhar Hiremath ret = -ENODEV; 5162ca8034SShashidhar Hiremath goto err_disable_dev; 5262ca8034SShashidhar Hiremath } 5362ca8034SShashidhar Hiremath 5462ca8034SShashidhar Hiremath host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL); 5562ca8034SShashidhar Hiremath if (!host) { 5662ca8034SShashidhar Hiremath ret = -ENOMEM; 5762ca8034SShashidhar Hiremath goto err_release; 5862ca8034SShashidhar Hiremath } 5962ca8034SShashidhar Hiremath 6062ca8034SShashidhar Hiremath host->irq = pdev->irq; 6162ca8034SShashidhar Hiremath host->irq_flags = IRQF_SHARED; 6262ca8034SShashidhar Hiremath host->dev = pdev->dev; 6362ca8034SShashidhar Hiremath host->pdata = &pci_board_data; 6462ca8034SShashidhar Hiremath 6562ca8034SShashidhar Hiremath host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR); 6662ca8034SShashidhar Hiremath if (!host->regs) { 6762ca8034SShashidhar Hiremath ret = -EIO; 6862ca8034SShashidhar Hiremath goto err_unmap; 6962ca8034SShashidhar Hiremath } 7062ca8034SShashidhar Hiremath 7162ca8034SShashidhar Hiremath pci_set_drvdata(pdev, host); 7262ca8034SShashidhar Hiremath ret = dw_mci_probe(host); 7362ca8034SShashidhar Hiremath if (ret) 7462ca8034SShashidhar Hiremath goto err_probe_failed; 7562ca8034SShashidhar Hiremath return ret; 7662ca8034SShashidhar Hiremath 7762ca8034SShashidhar Hiremath err_probe_failed: 7862ca8034SShashidhar Hiremath pci_iounmap(pdev, host->regs); 7962ca8034SShashidhar Hiremath err_unmap: 8062ca8034SShashidhar Hiremath kfree(host); 8162ca8034SShashidhar Hiremath err_release: 8262ca8034SShashidhar Hiremath pci_release_regions(pdev); 8362ca8034SShashidhar Hiremath err_disable_dev: 8462ca8034SShashidhar Hiremath pci_disable_device(pdev); 8562ca8034SShashidhar Hiremath return ret; 8662ca8034SShashidhar Hiremath } 8762ca8034SShashidhar Hiremath 8862ca8034SShashidhar Hiremath static void __devexit dw_mci_pci_remove(struct pci_dev *pdev) 8962ca8034SShashidhar Hiremath { 9062ca8034SShashidhar Hiremath struct dw_mci *host = pci_get_drvdata(pdev); 9162ca8034SShashidhar Hiremath 9262ca8034SShashidhar Hiremath dw_mci_remove(host); 9362ca8034SShashidhar Hiremath pci_set_drvdata(pdev, NULL); 9462ca8034SShashidhar Hiremath pci_release_regions(pdev); 9562ca8034SShashidhar Hiremath pci_iounmap(pdev, host->regs); 9662ca8034SShashidhar Hiremath kfree(host); 9762ca8034SShashidhar Hiremath pci_disable_device(pdev); 9862ca8034SShashidhar Hiremath } 9962ca8034SShashidhar Hiremath 10062ca8034SShashidhar Hiremath #ifdef CONFIG_PM_SLEEP 10162ca8034SShashidhar Hiremath static int dw_mci_pci_suspend(struct device *dev) 10262ca8034SShashidhar Hiremath { 10362ca8034SShashidhar Hiremath int ret; 10462ca8034SShashidhar Hiremath struct pci_dev *pdev = to_pci_dev(dev); 10562ca8034SShashidhar Hiremath struct dw_mci *host = pci_get_drvdata(pdev); 10662ca8034SShashidhar Hiremath 10762ca8034SShashidhar Hiremath ret = dw_mci_suspend(host); 10862ca8034SShashidhar Hiremath return ret; 10962ca8034SShashidhar Hiremath } 11062ca8034SShashidhar Hiremath 11162ca8034SShashidhar Hiremath static int dw_mci_pci_resume(struct device *dev) 11262ca8034SShashidhar Hiremath { 11362ca8034SShashidhar Hiremath int ret; 11462ca8034SShashidhar Hiremath struct pci_dev *pdev = to_pci_dev(dev); 11562ca8034SShashidhar Hiremath struct dw_mci *host = pci_get_drvdata(pdev); 11662ca8034SShashidhar Hiremath 11762ca8034SShashidhar Hiremath ret = dw_mci_resume(host); 11862ca8034SShashidhar Hiremath return ret; 11962ca8034SShashidhar Hiremath } 12062ca8034SShashidhar Hiremath #else 12162ca8034SShashidhar Hiremath #define dw_mci_pci_suspend NULL 12262ca8034SShashidhar Hiremath #define dw_mci_pci_resume NULL 12362ca8034SShashidhar Hiremath #endif /* CONFIG_PM_SLEEP */ 12462ca8034SShashidhar Hiremath 12562ca8034SShashidhar Hiremath static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume); 12662ca8034SShashidhar Hiremath 12762ca8034SShashidhar Hiremath static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = { 12862ca8034SShashidhar Hiremath { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) }, 12962ca8034SShashidhar Hiremath {} 13062ca8034SShashidhar Hiremath }; 13162ca8034SShashidhar Hiremath MODULE_DEVICE_TABLE(pci, dw_mci_pci_id); 13262ca8034SShashidhar Hiremath 13362ca8034SShashidhar Hiremath static struct pci_driver dw_mci_pci_driver = { 13462ca8034SShashidhar Hiremath .name = "dw_mmc_pci", 13562ca8034SShashidhar Hiremath .id_table = dw_mci_pci_id, 13662ca8034SShashidhar Hiremath .probe = dw_mci_pci_probe, 13762ca8034SShashidhar Hiremath .remove = dw_mci_pci_remove, 13862ca8034SShashidhar Hiremath .driver = { 13962ca8034SShashidhar Hiremath .pm = &dw_mci_pci_pmops 14062ca8034SShashidhar Hiremath }, 14162ca8034SShashidhar Hiremath }; 14262ca8034SShashidhar Hiremath 143350e3e00SSachin Kamat module_pci_driver(dw_mci_pci_driver); 14462ca8034SShashidhar Hiremath 14562ca8034SShashidhar Hiremath MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver"); 14662ca8034SShashidhar Hiremath MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>"); 14762ca8034SShashidhar Hiremath MODULE_LICENSE("GPL v2"); 148