2 * PCI driver for the Synopsys DesignWare DMA Controller
4 * Copyright (C) 2013 Intel Corporation
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 const struct dw_dma_platform_data *pdata = (void *)pid->driver_data;
21 struct dw_dma_chip *chip;
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;
54 ret = dw_dma_probe(chip);
58 pci_set_drvdata(pdev, chip);
63 static void dw_pci_remove(struct pci_dev *pdev)
65 struct dw_dma_chip *chip = pci_get_drvdata(pdev);
68 ret = dw_dma_remove(chip);
70 dev_warn(&pdev->dev, "can't remove device properly: %d\n", ret);
73 #ifdef CONFIG_PM_SLEEP
75 static int dw_pci_suspend_late(struct device *dev)
77 struct pci_dev *pci = to_pci_dev(dev);
78 struct dw_dma_chip *chip = pci_get_drvdata(pci);
80 return dw_dma_disable(chip);
83 static int dw_pci_resume_early(struct device *dev)
85 struct pci_dev *pci = to_pci_dev(dev);
86 struct dw_dma_chip *chip = pci_get_drvdata(pci);
88 return dw_dma_enable(chip);
91 #endif /* CONFIG_PM_SLEEP */
93 static const struct dev_pm_ops dw_pci_dev_pm_ops = {
94 SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_pci_suspend_late, dw_pci_resume_early)
97 static const struct pci_device_id dw_pci_id_table[] = {
99 { PCI_VDEVICE(INTEL, 0x0827) },
100 { PCI_VDEVICE(INTEL, 0x0830) },
103 { PCI_VDEVICE(INTEL, 0x0f06) },
104 { PCI_VDEVICE(INTEL, 0x0f40) },
107 { PCI_VDEVICE(INTEL, 0x2286) },
108 { PCI_VDEVICE(INTEL, 0x22c0) },
111 { PCI_VDEVICE(INTEL, 0x9c60) },
114 { PCI_VDEVICE(INTEL, 0x9ce0) },
118 MODULE_DEVICE_TABLE(pci, dw_pci_id_table);
120 static struct pci_driver dw_pci_driver = {
121 .name = "dw_dmac_pci",
122 .id_table = dw_pci_id_table,
123 .probe = dw_pci_probe,
124 .remove = dw_pci_remove,
126 .pm = &dw_pci_dev_pm_ops,
130 module_pci_driver(dw_pci_driver);
132 MODULE_LICENSE("GPL v2");
133 MODULE_DESCRIPTION("Synopsys DesignWare DMA Controller PCI driver");