106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Synopsys DesignWare Multimedia Card PCI Interface driver
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*
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* Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
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*/
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/pci.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/mmc.h>
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#include "dw_mmc.h"
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#define PCI_BAR_NO 2
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#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
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#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
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/* Defining the Capabilities */
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#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
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MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
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MMC_CAP_SDIO_IRQ)
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static struct dw_mci_board pci_board_data = {
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.caps = DW_MCI_CAPABILITIES,
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.bus_hz = 33 * 1000 * 1000,
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.detect_delay_ms = 200,
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.fifo_depth = 32,
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};
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static int dw_mci_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *entries)
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{
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struct dw_mci *host;
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int ret;
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ret = pcim_enable_device(pdev);
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if (ret)
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return ret;
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host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
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if (!host)
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return -ENOMEM;
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host->irq = pdev->irq;
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host->irq_flags = IRQF_SHARED;
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host->dev = &pdev->dev;
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host->pdata = &pci_board_data;
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ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
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if (ret)
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return ret;
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host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
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pci_set_master(pdev);
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ret = dw_mci_probe(host);
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if (ret)
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return ret;
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pci_set_drvdata(pdev, host);
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return 0;
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}
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static void dw_mci_pci_remove(struct pci_dev *pdev)
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{
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struct dw_mci *host = pci_get_drvdata(pdev);
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dw_mci_remove(host);
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}
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static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
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pm_runtime_force_resume)
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SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
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dw_mci_runtime_resume,
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NULL)
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};
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static const struct pci_device_id dw_mci_pci_id[] = {
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{ PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
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{}
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};
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MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
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static struct pci_driver dw_mci_pci_driver = {
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.name = "dw_mmc_pci",
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.id_table = dw_mci_pci_id,
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.probe = dw_mci_pci_probe,
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.remove = dw_mci_pci_remove,
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.driver = {
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.pm = &dw_mci_pci_dev_pm_ops,
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},
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};
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module_pci_driver(dw_mci_pci_driver);
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MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
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MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
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MODULE_LICENSE("GPL v2");
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