2 * PCI driver for the Synopsys DesignWare DMA Controller
4 * Copyright (C) 2013 Intel Corporation
5 * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/module.h>
13 #include <linux/pci.h>
14 #include <linux/device.h>
18 static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
20 struct dw_dma_chip *chip;
21 struct dw_dma_platform_data *pdata = (void *)pid->driver_data;
24 ret = pcim_enable_device(pdev);
28 ret = pcim_iomap_regions(pdev, 1 << 0, pci_name(pdev));
30 dev_err(&pdev->dev, "I/O memory remapping failed\n");
35 pci_try_set_mwi(pdev);
37 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
41 ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
45 chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
49 chip->dev = &pdev->dev;
50 chip->regs = pcim_iomap_table(pdev)[0];
51 chip->irq = pdev->irq;
53 ret = dw_dma_probe(chip, pdata);
57 pci_set_drvdata(pdev, chip);
62 static void dw_pci_remove(struct pci_dev *pdev)
64 struct dw_dma_chip *chip = pci_get_drvdata(pdev);
67 ret = dw_dma_remove(chip);
69 dev_warn(&pdev->dev, "can't remove device properly: %d\n", ret);
72 #ifdef CONFIG_PM_SLEEP
74 static int dw_pci_suspend_late(struct device *dev)
76 struct pci_dev *pci = to_pci_dev(dev);
77 struct dw_dma_chip *chip = pci_get_drvdata(pci);
79 return dw_dma_disable(chip);
82 static int dw_pci_resume_early(struct device *dev)
84 struct pci_dev *pci = to_pci_dev(dev);
85 struct dw_dma_chip *chip = pci_get_drvdata(pci);
87 return dw_dma_enable(chip);
90 #endif /* CONFIG_PM_SLEEP */
92 static const struct dev_pm_ops dw_pci_dev_pm_ops = {
93 SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_pci_suspend_late, dw_pci_resume_early)
96 static const struct pci_device_id dw_pci_id_table[] = {
98 { PCI_VDEVICE(INTEL, 0x0827) },
99 { PCI_VDEVICE(INTEL, 0x0830) },
102 { PCI_VDEVICE(INTEL, 0x0f06) },
103 { PCI_VDEVICE(INTEL, 0x0f40) },
106 { PCI_VDEVICE(INTEL, 0x2286) },
107 { PCI_VDEVICE(INTEL, 0x22c0) },
110 { PCI_VDEVICE(INTEL, 0x9c60) },
113 MODULE_DEVICE_TABLE(pci, dw_pci_id_table);
115 static struct pci_driver dw_pci_driver = {
116 .name = "dw_dmac_pci",
117 .id_table = dw_pci_id_table,
118 .probe = dw_pci_probe,
119 .remove = dw_pci_remove,
121 .pm = &dw_pci_dev_pm_ops,
125 module_pci_driver(dw_pci_driver);
127 MODULE_LICENSE("GPL v2");
128 MODULE_DESCRIPTION("Synopsys DesignWare DMA Controller PCI driver");
129 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");